update test times

git-svn-id: https://bucket.mit.edu/svn/nilm/tags/nilmdb-orig-tests@11322 ddd99763-3ecb-0310-9145-efcb8ce7c51f

.coveragerc

@@ -1,10 +0,0 @@
-# -*- conf -*-
-
-[run]
-# branch = True
-
-[report]
-exclude_lines =
-	pragma: no cover
-	if 0:
-omit = nilmdb/utils/datetime_tz*,nilmdb/scripts,nilmdb/_version.py

.gitattributes

@@ -1 +0,0 @@
-nilmdb/_version.py export-subst

.gitignore

@@ -1,25 +0,0 @@
-# Tests
-tests/*testdb/
-.coverage
-db/
-
-# Compiled / cythonized files
-docs/*.html
-build/
-*.pyc
-nilmdb/server/interval.c
-nilmdb/server/layout.c
-nilmdb/server/rbtree.c
-*.so
-
-# Setup junk
-dist/
-nilmdb.egg-info/
-
-# This gets generated as needed by setup.py
-MANIFEST.in
-MANIFEST
-
-# Misc
-timeit*out
-

.pylintrc

@@ -1,250 +0,0 @@
-# -*- conf -*-
-[MASTER]
-
-# Specify a configuration file.
-#rcfile=
-
-# Python code to execute, usually for sys.path manipulation such as
-# pygtk.require().
-#init-hook=
-
-# Profiled execution.
-profile=no
-
-# Add files or directories to the blacklist. They should be base names, not
-# paths.
-ignore=datetime_tz
-
-# Pickle collected data for later comparisons.
-persistent=no
-
-# List of plugins (as comma separated values of python modules names) to load,
-# usually to register additional checkers.
-load-plugins=
-
-
-[MESSAGES CONTROL]
-
-# Enable the message, report, category or checker with the given id(s). You can
-# either give multiple identifier separated by comma (,) or put this option
-# multiple time.
-#enable=
-
-# Disable the message, report, category or checker with the given id(s). You
-# can either give multiple identifier separated by comma (,) or put this option
-# multiple time (only on the command line, not in the configuration file where
-# it should appear only once).
-disable=C0111,R0903,R0201,R0914,R0912,W0142,W0703,W0702
-
-
-[REPORTS]
-
-# Set the output format. Available formats are text, parseable, colorized, msvs
-# (visual studio) and html
-output-format=parseable
-
-# Include message's id in output
-include-ids=yes
-
-# Put messages in a separate file for each module / package specified on the
-# command line instead of printing them on stdout. Reports (if any) will be
-# written in a file name "pylint_global.[txt|html]".
-files-output=no
-
-# Tells whether to display a full report or only the messages
-reports=yes
-
-# Python expression which should return a note less than 10 (10 is the highest
-# note). You have access to the variables errors warning, statement which
-# respectively contain the number of errors / warnings messages and the total
-# number of statements analyzed. This is used by the global evaluation report
-# (RP0004).
-evaluation=10.0 - ((float(5 * error + warning + refactor + convention) / statement) * 10)
-
-# Add a comment according to your evaluation note. This is used by the global
-# evaluation report (RP0004).
-comment=no
-
-
-[SIMILARITIES]
-
-# Minimum lines number of a similarity.
-min-similarity-lines=4
-
-# Ignore comments when computing similarities.
-ignore-comments=yes
-
-# Ignore docstrings when computing similarities.
-ignore-docstrings=yes
-
-
-[TYPECHECK]
-
-# Tells whether missing members accessed in mixin class should be ignored. A
-# mixin class is detected if its name ends with "mixin" (case insensitive).
-ignore-mixin-members=yes
-
-# List of classes names for which member attributes should not be checked
-# (useful for classes with attributes dynamically set).
-ignored-classes=SQLObject
-
-# When zope mode is activated, add a predefined set of Zope acquired attributes
-# to generated-members.
-zope=no
-
-# List of members which are set dynamically and missed by pylint inference
-# system, and so shouldn't trigger E0201 when accessed. Python regular
-# expressions are accepted.
-generated-members=REQUEST,acl_users,aq_parent
-
-
-[FORMAT]
-
-# Maximum number of characters on a single line.
-max-line-length=80
-
-# Maximum number of lines in a module
-max-module-lines=1000
-
-# String used as indentation unit. This is usually " " (4 spaces) or "\t" (1
-# tab).
-indent-string='    '
-
-
-[MISCELLANEOUS]
-
-# List of note tags to take in consideration, separated by a comma.
-notes=FIXME,XXX,TODO
-
-
-[VARIABLES]
-
-# Tells whether we should check for unused import in __init__ files.
-init-import=no
-
-# A regular expression matching the beginning of the name of dummy variables
-# (i.e. not used).
-dummy-variables-rgx=_|dummy
-
-# List of additional names supposed to be defined in builtins. Remember that
-# you should avoid to define new builtins when possible.
-additional-builtins=
-
-
-[BASIC]
-
-# Required attributes for module, separated by a comma
-required-attributes=
-
-# List of builtins function names that should not be used, separated by a comma
-bad-functions=apply,input
-
-# Regular expression which should only match correct module names
-module-rgx=(([a-z_][a-z0-9_]*)|([A-Z][a-zA-Z0-9]+))$
-
-# Regular expression which should only match correct module level names
-const-rgx=(([A-Z_][A-Z0-9_]*)|(__.*__)|version)$
-
-# Regular expression which should only match correct class names
-class-rgx=[A-Z_][a-zA-Z0-9]+$
-
-# Regular expression which should only match correct function names
-function-rgx=[a-z_][a-z0-9_]{0,30}$
-
-# Regular expression which should only match correct method names
-method-rgx=[a-z_][a-z0-9_]{0,30}$
-
-# Regular expression which should only match correct instance attribute names
-attr-rgx=[a-z_][a-z0-9_]{0,30}$
-
-# Regular expression which should only match correct argument names
-argument-rgx=[a-z_][a-z0-9_]{0,30}$
-
-# Regular expression which should only match correct variable names
-variable-rgx=[a-z_][a-z0-9_]{0,30}$
-
-# Regular expression which should only match correct list comprehension /
-# generator expression variable names
-inlinevar-rgx=[A-Za-z_][A-Za-z0-9_]*$
-
-# Good variable names which should always be accepted, separated by a comma
-good-names=i,j,k,ex,Run,_
-
-# Bad variable names which should always be refused, separated by a comma
-bad-names=foo,bar,baz,toto,tutu,tata
-
-# Regular expression which should only match functions or classes name which do
-# not require a docstring
-no-docstring-rgx=__.*__
-
-
-[CLASSES]
-
-# List of interface methods to ignore, separated by a comma. This is used for
-# instance to not check methods defines in Zope's Interface base class.
-ignore-iface-methods=isImplementedBy,deferred,extends,names,namesAndDescriptions,queryDescriptionFor,getBases,getDescriptionFor,getDoc,getName,getTaggedValue,getTaggedValueTags,isEqualOrExtendedBy,setTaggedValue,isImplementedByInstancesOf,adaptWith,is_implemented_by
-
-# List of method names used to declare (i.e. assign) instance attributes.
-defining-attr-methods=__init__,__new__,setUp
-
-# List of valid names for the first argument in a class method.
-valid-classmethod-first-arg=cls
-
-
-[DESIGN]
-
-# Maximum number of arguments for function / method
-max-args=5
-
-# Argument names that match this expression will be ignored. Default to name
-# with leading underscore
-ignored-argument-names=_.*
-
-# Maximum number of locals for function / method body
-max-locals=15
-
-# Maximum number of return / yield for function / method body
-max-returns=6
-
-# Maximum number of branch for function / method body
-max-branchs=12
-
-# Maximum number of statements in function / method body
-max-statements=50
-
-# Maximum number of parents for a class (see R0901).
-max-parents=7
-
-# Maximum number of attributes for a class (see R0902).
-max-attributes=7
-
-# Minimum number of public methods for a class (see R0903).
-min-public-methods=2
-
-# Maximum number of public methods for a class (see R0904).
-max-public-methods=20
-
-
-[IMPORTS]
-
-# Deprecated modules which should not be used, separated by a comma
-deprecated-modules=regsub,string,TERMIOS,Bastion,rexec
-
-# Create a graph of every (i.e. internal and external) dependencies in the
-# given file (report RP0402 must not be disabled)
-import-graph=
-
-# Create a graph of external dependencies in the given file (report RP0402 must
-# not be disabled)
-ext-import-graph=
-
-# Create a graph of internal dependencies in the given file (report RP0402 must
-# not be disabled)
-int-import-graph=
-
-
-[EXCEPTIONS]
-
-# Exceptions that will emit a warning when being caught. Defaults to
-# "Exception"
-overgeneral-exceptions=Exception

Makefile

@@ -1,46 +1,2 @@
-# By default, run the tests.
-all: test
-
-version:
-	python setup.py version
-
-build:
-	python setup.py build_ext --inplace
-
-dist: sdist
-sdist:
-	python setup.py sdist
-
-install:
-	python setup.py install
-
-develop:
-	python setup.py develop
-
-docs:
-	make -C docs
-
-lint:
-	pylint --rcfile=.pylintrc nilmdb
-
-test:
-ifeq ($(INSIDE_EMACS), t)
-# Use the slightly more flexible script
-	python setup.py build_ext --inplace
-	python tests/runtests.py
-else
-# Let setup.py check dependencies, build stuff, and run the test
-	python setup.py nosetests
-endif
-
-clean::
-	find . -name '*pyc' | xargs rm -f
-	rm -f .coverage
-	rm -rf tests/*testdb*
-	rm -rf nilmdb.egg-info/ build/ nilmdb/server/*.so MANIFEST.in
-	make -C docs clean
-
-gitclean::
-	git clean -dXf
-
-.PHONY: all version build dist sdist install docs lint test clean gitclean
+all:
+	nosetests nilmdb/test_interval.py

README.txt

@@ -1,26 +1,4 @@
-nilmdb: Non-Intrusive Load Monitor Database
-by Jim Paris <jim@jtan.com>
+To install, 
 
-Prerequisites:
+   python seutp.py install
 
-  # Runtime and build environments
-  sudo apt-get install python2.7 python2.7-dev python-setuptools cython
-
-  # Base NilmDB dependencies
-  sudo apt-get install python-cherrypy3 python-decorator python-simplejson
-  sudo apt-get install python-requests python-dateutil python-tz python-psutil
-
-  # Tools for running tests
-  sudo apt-get install python-nose python-coverage
-
-Test:
-  python setup.py nosetests
-
-Install:
-
-  python setup.py install
-
-Usage:
-
-  nilmdb-server --help
-  nilmtool --help

bin/nilm-test.py

@@ -0,0 +1,26 @@
+#!/usr/bin/python
+
+from nilmdb import Interval
+from optparse import OptionParser
+import sys
+
+version = "1.0"
+
+parser = OptionParser()
+parser.add_option("-d", "--db", dest="database", metavar="DATABASE",
+                  help="location of sqlite database")
+parser.add_option("-V", "--version", dest="version", default=False, action="store_true",
+                  help="print version then exit")
+
+(options, args) = parser.parse_args()
+
+if (options.version):
+    print "This script version: " + version
+    sys.exit(0)
+
+if options.database is None:
+    print "Error: database is mandatory"
+    sys.exit(1)
+
+print "Database is " + options.database
+

docs/Makefile

@@ -1,9 +0,0 @@
-ALL_DOCS = $(wildcard *.md)
-
-all: $(ALL_DOCS:.md=.html)
-
-%.html: %.md
-	pandoc -s $< > $@
-
-clean:
-	rm -f *.html

docs/TODO.md

@@ -1,5 +0,0 @@
-- Documentation
-
-- Machine-readable information in OverflowError, parser errors.
-  Maybe subclass `cherrypy.HTTPError` and override `set_response`
-  to add another JSON field?

docs/design.md

@@ -1,378 +0,0 @@
-Structure
----------
-nilmdb.nilmdb is the NILM database interface.  A nilmdb.BulkData
-interface stores data in flat files, and a SQL database tracks
-metadata and ranges.
-
-Access to the nilmdb must be single-threaded.  This is handled with
-the nilmdb.serializer class.  In the future this could probably
-be turned into a per-path serialization.
-
-nilmdb.server is a HTTP server that provides an interface to talk,
-thorugh the serialization layer, to the nilmdb object.
-
-nilmdb.client is a HTTP client that connects to this.
-
-Sqlite performance
-------------------
-
-Committing a transaction in the default sync mode (PRAGMA synchronous=FULL)
-takes about 125msec.  sqlite3 will commit transactions at 3 times:
-
-1. explicit con.commit()
-
-2. between a series of DML commands and non-DML commands, e.g.
-   after a series of INSERT, SELECT, but before a CREATE TABLE or
-   PRAGMA.
-
-3. at the end of an explicit transaction, e.g. "with self.con as con:"
-
-To speed up testing, or if this transaction speed becomes an issue,
-the sync=False option to NilmDB will set PRAGMA synchronous=OFF.
-
-
-Inserting streams
------------------
-
-We need to send the contents of "data" as POST.  Do we need chunked
-transfer?
-
-- Don't know the size in advance, so we would need to use chunked if
-  we send the entire thing in one request.
-- But we shouldn't send one chunk per line, so we need to buffer some
-  anyway; why not just make new requests?
-- Consider the infinite-streaming case, we might want to send it
-  immediately?  Not really -- server still should do explicit inserts
-  of fixed-size chunks.
-- Even chunked encoding needs the size of each chunk beforehand, so
-  everything still gets buffered.  Just a tradeoff of buffer size.
-
-Before timestamps are added:
-
-- Raw data is about 440 kB/s    (9 channels)
-- Prep data is about 12.5 kB/s  (1 phase)
-- How do we know how much data to send?
-
-    - Remember that we can only do maybe 8-50 transactions per second on
-      the sqlite database.  So if one block of inserted data is one
-      transaction, we'd need the raw case to be around 64kB per request,
-      ideally more.
-    - Maybe use a range, based on how long it's taking to read the data
-        - If no more data, send it
-        - If data > 1 MB, send it
-    - If more than 10 seconds have elapsed, send it
-    - Should those numbers come from the server?
-
-Converting from ASCII to PyTables:
-
-- For each row getting added, we need to set attributes on a PyTables
-  Row object and call table.append().  This means that there isn't a
-  particularly efficient way of converting from ascii.
-- Could create a function like nilmdb.layout.Layout("foo".fillRow(asciiline)
-    - But this means we're doing parsing on the serialized side
-    - Let's keep parsing on the threaded server side so we can detect
-      errors better, and not block the serialized nilmdb for a slow
-      parsing process.
-- Client sends ASCII data
-- Server converts this ACSII data to a list of values
-    - Maybe:
-
-            # threaded side creates this object
-            parser = nilmdb.layout.Parser("layout_name")
-            # threaded side parses and fills it with data
-            parser.parse(textdata)
-            # serialized side pulls out rows
-            for n in xrange(parser.nrows):
-                parser.fill_row(rowinstance, n)
-                table.append()
-
-
-Inserting streams, inside nilmdb
---------------------------------
-
-- First check that the new stream doesn't overlap.
-    - Get minimum timestamp, maximum timestamp from data parser.
-        - (extend parser to verify monotonicity and track extents)
-    - Get all intervals for this stream in the database
-    - See if new interval overlaps any existing ones
-        - If so, bail
-    - Question: should we cache intervals inside NilmDB?
-        - Assume database is fast for now, and always rebuild fom DB.
-        - Can add a caching layer later if we need to.
-    - `stream_get_ranges(path)` -> return IntervalSet?
-
-Speed
------
-
-- First approach was quadratic.  Adding four hours of data:
-
-        $ time zcat /home/jim/bpnilm-data/snapshot-1-20110513-110002.raw.gz | ./nilmtool.py insert -s 20110513-110000 /bpnilm/1/raw
-        real    24m31.093s
-        $ time zcat /home/jim/bpnilm-data/snapshot-1-20110513-110002.raw.gz | ./nilmtool.py insert -s 20110513-120001 /bpnilm/1/raw
-        real    43m44.528s
-        $ time zcat /home/jim/bpnilm-data/snapshot-1-20110513-110002.raw.gz | ./nilmtool.py insert -s 20110513-130002 /bpnilm/1/raw
-        real    93m29.713s
-        $ time zcat /home/jim/bpnilm-data/snapshot-1-20110513-110002.raw.gz | ./nilmtool.py insert -s 20110513-140003 /bpnilm/1/raw
-        real    166m53.007s
-
-- Disabling pytables indexing didn't help:
-
-        real    31m21.492s
-        real    52m51.963s
-        real    102m8.151s
-        real    176m12.469s
-
-- Server RAM usage is constant.
-
-- Speed problems were due to IntervalSet speed, of parsing intervals
-  from the database and adding the new one each time.
-
-    - First optimization is to cache result of `nilmdb:_get_intervals`,
-      which gives the best speedup.
-
-    - Also switched to internally using bxInterval from bx-python package.
-      Speed of `tests/test_interval:TestIntervalSpeed` is pretty decent
-      and seems to be growing logarithmically now.  About 85μs per insertion
-      for inserting 131k entries.
-
-    - Storing the interval data in SQL might be better, with a scheme like:
-      http://www.logarithmic.net/pfh/blog/01235197474
-
-- Next slowdown target is nilmdb.layout.Parser.parse().
-    - Rewrote parsers using cython and sscanf
-    - Stats (rev 10831), with `_add_interval` disabled
-
-        layout.pyx.Parser.parse:128        6303 sec, 262k calls
-         layout.pyx.parse:63               13913 sec, 5.1g calls
-        numpy:records.py.fromrecords:569   7410 sec, 262k calls
-
-- Probably OK for now.
-
-- After all updates, now takes about 8.5 minutes to insert an hour of
-  data, constant after adding 171 hours (4.9 billion data points)
-
-- Data set size: 98 gigs = 20 bytes per data point.
-  6 uint16 data + 1 uint32 timestamp = 16 bytes per point
-  So compression must be off -- will retry with compression forced on.
-
-IntervalSet speed
------------------
-- Initial implementation was pretty slow, even with binary search in
-  sorted list
-
-- Replaced with bxInterval; now takes about log n time for an insertion
-    - TestIntervalSpeed with range(17,18) and profiling
-        - 85 μs each
-        - 131072 calls to `__iadd__`
-        - 131072 to bx.insert_interval
-        - 131072 to bx.insert:395
-        - 2355835 to bx.insert:106  (18x as many?)
-
-- Tried blist too, worse than bxinterval.
-
-- Might be algorithmic improvements to be made in Interval.py,
-  like in `__and__`
-
-- Replaced again with rbtree.  Seems decent.  Numbers are time per
-  insert for 2**17 insertions, followed by total wall time and RAM
-  usage for running "make test" with `test_rbtree` and `test_interval`
-  with range(5,20):
-    - old values with bxinterval:
-      20.2 μS, total 20 s, 177 MB RAM
-    - rbtree, plain python:
-      97 μS, total 105 s, 846 MB RAM
-    - rbtree converted to cython:
-      26 μS, total 29 s, 320 MB RAM
-    - rbtree and interval converted to cython:
-      8.4 μS, total 12 s, 134 MB RAM
-
-Layouts
--------
-Current/old design has specific layouts: RawData, PrepData, RawNotchedData.
-Let's get rid of this entirely and switch to simpler data types that are
-just collections and counts of a single type.  We'll still use strings
-to describe them, with format:
-
-    type_count
-
-where type is "uint16", "float32", or "float64", and count is an integer.
-
-nilmdb.layout.named() will parse these strings into the appropriate
-handlers.  For compatibility:
-
-    "RawData" == "uint16_6"
-    "RawNotchedData" == "uint16_9"
-    "PrepData" == "float32_8"
-
-
-BulkData design
----------------
-
-BulkData is a custom bulk data storage system that was written to
-replace PyTables.  The general structure is a `data` subdirectory in
-the main NilmDB directory.  Within `data`, paths are created for each
-created stream.  These locations are called tables.  For example,
-tables might be located at
-
-    nilmdb/data/newton/raw/
-    nilmdb/data/newton/prep/
-    nilmdb/data/cottage/raw/
-
-Each table contains:
-
-- An unchanging `_format` file (Python pickle format) that describes
-  parameters of how the data is broken up, like files per directory,
-  rows per file, and the binary data format
-
-- Hex named subdirectories `("%04x", although more than 65536 can exist)`
-
-- Hex named files within those subdirectories, like:
-
-        /nilmdb/data/newton/raw/000b/010a
-
-    The data format of these files is raw binary, interpreted by the
-    Python `struct` module according to the format string in the
-    `_format` file.
-
-- Same as above, with `.removed` suffix, is an optional file (Python
-  pickle format) containing a list of row numbers that have been
-  logically removed from the file.  If this range covers the entire
-  file, the entire file will be removed.
-
-- Note that the `bulkdata.nrows` variable is calculated once in
-  `BulkData.__init__()`, and only ever incremented during use.  Thus,
-  even if all data is removed, `nrows` can remain high.  However, if
-  the server is restarted, the newly calculated `nrows` may be lower
-  than in a previous run due to deleted data.  To be specific, this
-  sequence of events:
-
-    - insert data
-    - remove all data
-    - insert data
-
-    will result in having different row numbers in the database, and
-    differently numbered files on the filesystem, than the sequence:
-
-    - insert data
-    - remove all data
-    - restart server
-    - insert data
-
-    This is okay!  Everything should remain consistent both in the
-    `BulkData` and `NilmDB`.  Not attempting to readjust `nrows` during
-    deletion makes the code quite a bit simpler.
-
-- Similarly, data files are never truncated shorter.  Removing data
-  from the end of the file will not shorten it; it will only be
-  deleted when it has been fully filled and all of the data has been
-  subsequently removed.
-
-
-Rocket
-------
-
-Original design had the nilmdb.nilmdb thread (through bulkdata)
-convert from on-disk layout to a Python list, and then the
-nilmdb.server thread (from cherrypy) converts to ASCII.  For at least
-the extraction side of things, it's easy to pass the bulkdata a layout
-name instead, and have it convert directly from on-disk to ASCII
-format, because this conversion can then be shoved into a C module.
-This module, which provides a means for converting directly from
-on-disk format to ASCII or Python lists, is the "rocket" interface.
-Python is still used to manage the files and figure out where the
-data should go; rocket just puts binary data directly in or out of
-those files at specified locations.
-
-Before rocket, testing speed with uint16_6 data, with an end-to-end
-test (extracting data with nilmtool):
-
-- insert: 65 klines/sec
-- extract: 120 klines/sec
-
-After switching to the rocket design, but using the Python version
-(pyrocket):
-
-- insert: 57 klines/sec
-- extract: 120 klines/sec
-
-After switching to a C extension module (rocket.c)
-
-- insert: 74 klines/sec through insert.py; 99.6 klines/sec through nilmtool
-- extract: 335 klines/sec
-
-After client block updates (described below):
-
-- insert: 180 klines/sec through nilmtool (pre-timestamped)
-- extract: 390 klines/sec through nilmtool
-
-Using "insert --timestamp" or "extract --bare" cuts the speed in half.
-
-Blocks versus lines
--------------------
-
-Generally want to avoid parsing the bulk of the data as lines if
-possible, and transfer things in bigger blocks at once.
-
-Current places where we use lines:
-
-- All data returned by `client.stream_extract`, since it comes from
-  `httpclient.get_gen`, which iterates over lines.  Not sure if this
-  should be changed, because a `nilmtool extract` is just about the
-  same speed as `curl -q .../stream/extract`!
-
-- `client.StreamInserter.insert_iter` and
-  `client.StreamInserter.insert_line`, which should probably get
-  replaced with block versions.  There's no real need to keep
-  updating the timestamp every time we get a new line of data.
-
-  - Finished.  Just a single insert() that takes any length string and
-    does very little processing until it's time to send it to the
-	server.
-
-Timestamps
-----------
-
-Timestamps are currently double-precision floats (64 bit).  Since the
-mantissa is 53-bit, this can only represent about 15-17 significant
-figures, and microsecond Unix timestamps like 1222333444.000111 are
-already 16 significant figures.  Rounding is therefore an issue;
-it's hard to sure that converting from ASCII, then back to ASCII,
-will always give the same result.
-
-Also, if the client provides a floating point value like 1.9999999999,
-we need to be careful that we don't store it as 1.9999999999 but later
-print it as 2.000000, because then round-trips change the data.
-
-Possible solutions:
-
-- When the client provides a floating point value to the server,
-  always round to the 6th decimal digit before verifying & storing.
-  Good for compatibility and simplicity.  But still might have rounding
-  issues, and clients will also need to round when doing their own
-  verification.  Having every piece of code need to know which digit
-  to round at is not ideal.
-
-- Always store int64 timestamps on the server, representing
-  microseconds since epoch.  int64 timestamps are used in all HTTP
-  parameters, in insert/extract ASCII strings, client API, commandline
-  raw timestamps, etc.  Pretty big change.
-
-  This is what we'll go with...
-
-  - Client programs that interpret the timestamps as doubles instead
-    of ints will remain accurate until 2^53 microseconds, or year
-    2255.
-
-  - On insert, maybe it's OK to send floating point microsecond values
-    (1234567890123456.0), just to cope with clients that want to print
-    everything as a double.  Server could try parsing as int64, and if
-    that fails, parse as double and truncate to int64.  However, this
-    wouldn't catch imprecise inputs like "1.23456789012e+15".  But
-    maybe that can just be ignored; it's likely to cause a
-    non-monotonic error at the client.
-
-  - Timestamps like 1234567890.123456 never show up anywhere, except
-    for interfacing to datetime_tz etc.  Command line "raw timestamps"
-    are always printed as int64 values, and a new format
-    "@1234567890123456" is added to the parser for specifying them
-    exactly.

extras/nilmtool-bash-completion.sh

@@ -1,20 +0,0 @@
-# To enable bash completion:
-#
-# 1. Ensure python-argcomplete is installed:
-#       pip install argcomplete
-# 2. Source this file:
-#       . nilmtool-bash-completion.sh
-
-_nilmtool_argcomplete() {
-    local IFS=$(printf "\013")
-    COMPREPLY=( $(IFS="$IFS" \
-                  COMP_LINE="$COMP_LINE" \
-	          COMP_WORDBREAKS="$COMP_WORDBREAKS" \
-                  COMP_POINT="$COMP_POINT" \
-                  _ARGCOMPLETE=1 \
-                  "$1" 8>&1 9>&2 1>/dev/null 2>/dev/null) )
-    if [[ $? != 0 ]]; then
-        unset COMPREPLY
-    fi
-}
-complete -o nospace -o default -F _nilmtool_argcomplete nilmtool

nilmdb/__init__.py

@@ -1,10 +1,2 @@
-"""Main NilmDB import"""
-
-# These aren't imported automatically, because loading the server
-# stuff isn't always necessary.
-#from nilmdb.server import NilmDB, Server
-#from nilmdb.client import Client
-
-from nilmdb._version import get_versions
-__version__ = get_versions()['version']
-del get_versions
+from nilmdb.interval import *
+from nilmdb.fileinterval import *

nilmdb/_version.py

@@ -1,197 +0,0 @@
-
-IN_LONG_VERSION_PY = True
-# This file helps to compute a version number in source trees obtained from
-# git-archive tarball (such as those provided by githubs download-from-tag
-# feature). Distribution tarballs (build by setup.py sdist) and build
-# directories (produced by setup.py build) will contain a much shorter file
-# that just contains the computed version number.
-
-# This file is released into the public domain. Generated by
-# versioneer-0.7+ (https://github.com/warner/python-versioneer)
-
-# these strings will be replaced by git during git-archive
-git_refnames = "$Format:%d$"
-git_full = "$Format:%H$"
-
-
-import subprocess
-import sys
-
-def run_command(args, cwd=None, verbose=False):
-    try:
-        # remember shell=False, so use git.cmd on windows, not just git
-        p = subprocess.Popen(args, stdout=subprocess.PIPE, cwd=cwd)
-    except EnvironmentError:
-        e = sys.exc_info()[1]
-        if verbose:
-            print("unable to run %s" % args[0])
-            print(e)
-        return None
-    stdout = p.communicate()[0].strip()
-    if sys.version >= '3':
-        stdout = stdout.decode()
-    if p.returncode != 0:
-        if verbose:
-            print("unable to run %s (error)" % args[0])
-        return None
-    return stdout
-
-
-import sys
-import re
-import os.path
-
-def get_expanded_variables(versionfile_source):
-    # the code embedded in _version.py can just fetch the value of these
-    # variables. When used from setup.py, we don't want to import
-    # _version.py, so we do it with a regexp instead. This function is not
-    # used from _version.py.
-    variables = {}
-    try:
-        for line in open(versionfile_source,"r").readlines():
-            if line.strip().startswith("git_refnames ="):
-                mo = re.search(r'=\s*"(.*)"', line)
-                if mo:
-                    variables["refnames"] = mo.group(1)
-            if line.strip().startswith("git_full ="):
-                mo = re.search(r'=\s*"(.*)"', line)
-                if mo:
-                    variables["full"] = mo.group(1)
-    except EnvironmentError:
-        pass
-    return variables
-
-def versions_from_expanded_variables(variables, tag_prefix, verbose=False):
-    refnames = variables["refnames"].strip()
-    if refnames.startswith("$Format"):
-        if verbose:
-            print("variables are unexpanded, not using")
-        return {} # unexpanded, so not in an unpacked git-archive tarball
-    refs = set([r.strip() for r in refnames.strip("()").split(",")])
-    for ref in list(refs):
-        if not re.search(r'\d', ref):
-            if verbose:
-                print("discarding '%s', no digits" % ref)
-            refs.discard(ref)
-            # Assume all version tags have a digit. git's %d expansion
-            # behaves like git log --decorate=short and strips out the
-            # refs/heads/ and refs/tags/ prefixes that would let us
-            # distinguish between branches and tags. By ignoring refnames
-            # without digits, we filter out many common branch names like
-            # "release" and "stabilization", as well as "HEAD" and "master".
-    if verbose:
-        print("remaining refs: %s" % ",".join(sorted(refs)))
-    for ref in sorted(refs):
-        # sorting will prefer e.g. "2.0" over "2.0rc1"
-        if ref.startswith(tag_prefix):
-            r = ref[len(tag_prefix):]
-            if verbose:
-                print("picking %s" % r)
-            return { "version": r,
-                     "full": variables["full"].strip() }
-    # no suitable tags, so we use the full revision id
-    if verbose:
-        print("no suitable tags, using full revision id")
-    return { "version": variables["full"].strip(),
-             "full": variables["full"].strip() }
-
-def versions_from_vcs(tag_prefix, versionfile_source, verbose=False):
-    # this runs 'git' from the root of the source tree. That either means
-    # someone ran a setup.py command (and this code is in versioneer.py, so
-    # IN_LONG_VERSION_PY=False, thus the containing directory is the root of
-    # the source tree), or someone ran a project-specific entry point (and
-    # this code is in _version.py, so IN_LONG_VERSION_PY=True, thus the
-    # containing directory is somewhere deeper in the source tree). This only
-    # gets called if the git-archive 'subst' variables were *not* expanded,
-    # and _version.py hasn't already been rewritten with a short version
-    # string, meaning we're inside a checked out source tree.
-
-    try:
-        here = os.path.abspath(__file__)
-    except NameError:
-        # some py2exe/bbfreeze/non-CPython implementations don't do __file__
-        return {} # not always correct
-
-    # versionfile_source is the relative path from the top of the source tree
-    # (where the .git directory might live) to this file. Invert this to find
-    # the root from __file__.
-    root = here
-    if IN_LONG_VERSION_PY:
-        for i in range(len(versionfile_source.split("/"))):
-            root = os.path.dirname(root)
-    else:
-        root = os.path.dirname(here)
-    if not os.path.exists(os.path.join(root, ".git")):
-        if verbose:
-            print("no .git in %s" % root)
-        return {}
-
-    GIT = "git"
-    if sys.platform == "win32":
-        GIT = "git.cmd"
-    stdout = run_command([GIT, "describe", "--tags", "--dirty", "--always"],
-                         cwd=root)
-    if stdout is None:
-        return {}
-    if not stdout.startswith(tag_prefix):
-        if verbose:
-            print("tag '%s' doesn't start with prefix '%s'" % (stdout, tag_prefix))
-        return {}
-    tag = stdout[len(tag_prefix):]
-    stdout = run_command([GIT, "rev-parse", "HEAD"], cwd=root)
-    if stdout is None:
-        return {}
-    full = stdout.strip()
-    if tag.endswith("-dirty"):
-        full += "-dirty"
-    return {"version": tag, "full": full}
-
-
-def versions_from_parentdir(parentdir_prefix, versionfile_source, verbose=False):
-    if IN_LONG_VERSION_PY:
-        # We're running from _version.py. If it's from a source tree
-        # (execute-in-place), we can work upwards to find the root of the
-        # tree, and then check the parent directory for a version string. If
-        # it's in an installed application, there's no hope.
-        try:
-            here = os.path.abspath(__file__)
-        except NameError:
-            # py2exe/bbfreeze/non-CPython don't have __file__
-            return {} # without __file__, we have no hope
-        # versionfile_source is the relative path from the top of the source
-        # tree to _version.py. Invert this to find the root from __file__.
-        root = here
-        for i in range(len(versionfile_source.split("/"))):
-            root = os.path.dirname(root)
-    else:
-        # we're running from versioneer.py, which means we're running from
-        # the setup.py in a source tree. sys.argv[0] is setup.py in the root.
-        here = os.path.abspath(sys.argv[0])
-        root = os.path.dirname(here)
-
-    # Source tarballs conventionally unpack into a directory that includes
-    # both the project name and a version string.
-    dirname = os.path.basename(root)
-    if not dirname.startswith(parentdir_prefix):
-        if verbose:
-            print("guessing rootdir is '%s', but '%s' doesn't start with prefix '%s'" %
-                  (root, dirname, parentdir_prefix))
-        return None
-    return {"version": dirname[len(parentdir_prefix):], "full": ""}
-
-tag_prefix = "nilmdb-"
-parentdir_prefix = "nilmdb-"
-versionfile_source = "nilmdb/_version.py"
-
-def get_versions(default={"version": "unknown", "full": ""}, verbose=False):
-    variables = { "refnames": git_refnames, "full": git_full }
-    ver = versions_from_expanded_variables(variables, tag_prefix, verbose)
-    if not ver:
-        ver = versions_from_vcs(tag_prefix, versionfile_source, verbose)
-    if not ver:
-        ver = versions_from_parentdir(parentdir_prefix, versionfile_source,
-                                      verbose)
-    if not ver:
-        ver = default
-    return ver
-

nilmdb/client/__init__.py

@@ -1,4 +0,0 @@
-"""nilmdb.client"""
-
-from nilmdb.client.client import Client
-from nilmdb.client.errors import ClientError, ServerError, Error

nilmdb/client/client.py

@@ -1,415 +0,0 @@
-# -*- coding: utf-8 -*-
-
-"""Class for performing HTTP client requests via libcurl"""
-
-import nilmdb.utils
-import nilmdb.client.httpclient
-from nilmdb.client.errors import ClientError
-
-import time
-import simplejson as json
-import contextlib
-
-from nilmdb.utils.time import timestamp_to_string, string_to_timestamp
-
-def extract_timestamp(line):
-    """Extract just the timestamp from a line of data text"""
-    return string_to_timestamp(line.split()[0])
-
-class Client(object):
-    """Main client interface to the Nilm database."""
-
-    def __init__(self, url, post_json = False):
-        """Initialize client with given URL.  If post_json is true,
-        POST requests are sent with Content-Type 'application/json'
-        instead of the default 'x-www-form-urlencoded'."""
-        self.http = nilmdb.client.httpclient.HTTPClient(url, post_json)
-        self.post_json = post_json
-
-    # __enter__/__exit__ allow this class to be a context manager
-    def __enter__(self):
-        return self
-
-    def __exit__(self, exc_type, exc_value, traceback):
-        self.close()
-
-    def _json_post_param(self, data):
-        """Return compact json-encoded version of parameter"""
-        if self.post_json:
-            # If we're posting as JSON, we don't need to encode it further here
-            return data
-        return json.dumps(data, separators=(',',':'))
-
-    def close(self):
-        """Close the connection; safe to call multiple times"""
-        self.http.close()
-
-    def geturl(self):
-        """Return the URL we're using"""
-        return self.http.baseurl
-
-    def version(self):
-        """Return server version"""
-        return self.http.get("version")
-
-    def dbinfo(self):
-        """Return server database info (path, size, free space)
-        as a dictionary."""
-        return self.http.get("dbinfo")
-
-    def stream_list(self, path = None, layout = None, extended = False):
-        params = {}
-        if path is not None:
-            params["path"] = path
-        if layout is not None:
-            params["layout"] = layout
-        if extended:
-            params["extended"] = 1
-        return self.http.get("stream/list", params)
-
-    def stream_get_metadata(self, path, keys = None):
-        params = { "path": path }
-        if keys is not None:
-            params["key"] = keys
-        return self.http.get("stream/get_metadata", params)
-
-    def stream_set_metadata(self, path, data):
-        """Set stream metadata from a dictionary, replacing all existing
-        metadata."""
-        params = {
-            "path": path,
-            "data": self._json_post_param(data)
-            }
-        return self.http.post("stream/set_metadata", params)
-
-    def stream_update_metadata(self, path, data):
-        """Update stream metadata from a dictionary"""
-        params = {
-            "path": path,
-            "data": self._json_post_param(data)
-            }
-        return self.http.post("stream/update_metadata", params)
-
-    def stream_create(self, path, layout):
-        """Create a new stream"""
-        params = { "path": path,
-                   "layout" : layout }
-        return self.http.post("stream/create", params)
-
-    def stream_destroy(self, path):
-        """Delete stream and its contents"""
-        params = { "path": path }
-        return self.http.post("stream/destroy", params)
-
-    def stream_rename(self, oldpath, newpath):
-        """Rename a stream."""
-        params = { "oldpath": oldpath,
-                   "newpath": newpath }
-        return self.http.post("stream/rename", params)
-
-    def stream_remove(self, path, start = None, end = None):
-        """Remove data from the specified time range"""
-        params = {
-            "path": path
-        }
-        if start is not None:
-            params["start"] = timestamp_to_string(start)
-        if end is not None:
-            params["end"] = timestamp_to_string(end)
-        return self.http.post("stream/remove", params)
-
-    @contextlib.contextmanager
-    def stream_insert_context(self, path, start = None, end = None):
-        """Return a context manager that allows data to be efficiently
-        inserted into a stream in a piecewise manner.  Data is be provided
-        as single lines, and is aggregated and sent to the server in larger
-        chunks as necessary.  Data lines must match the database layout for
-        the given path, and end with a newline.
-
-        Example:
-          with client.stream_insert_context('/path', start, end) as ctx:
-            ctx.insert('1234567890.0 1 2 3 4\\n')
-            ctx.insert('1234567891.0 1 2 3 4\\n')
-
-        For more details, see help for nilmdb.client.client.StreamInserter
-
-        This may make multiple requests to the server, if the data is
-        large enough or enough time has passed between insertions.
-        """
-        ctx = StreamInserter(self.http, path, start, end)
-        yield ctx
-        ctx.finalize()
-
-    def stream_insert(self, path, data, start = None, end = None):
-        """Insert rows of data into a stream.  data should be a string
-        or iterable that provides ASCII data that matches the database
-        layout for path.  See stream_insert_context for details on the
-        'start' and 'end' parameters."""
-        with self.stream_insert_context(path, start, end) as ctx:
-            if isinstance(data, basestring):
-                ctx.insert(data)
-            else:
-                for chunk in data:
-                    ctx.insert(chunk)
-        return ctx.last_response
-
-    def stream_intervals(self, path, start = None, end = None, diffpath = None):
-        """
-        Return a generator that yields each stream interval.
-
-        If diffpath is not None, yields only interval ranges that are
-        present in 'path' but not in 'diffpath'.
-        """
-        params = {
-            "path": path
-        }
-        if diffpath is not None:
-            params["diffpath"] = diffpath
-        if start is not None:
-            params["start"] = timestamp_to_string(start)
-        if end is not None:
-            params["end"] = timestamp_to_string(end)
-        return self.http.get_gen("stream/intervals", params)
-
-    def stream_extract(self, path, start = None, end = None, count = False):
-        """
-        Extract data from a stream.  Returns a generator that yields
-        lines of ASCII-formatted data that matches the database
-        layout for the given path.
-
-        Specify count = True to return a count of matching data points
-        rather than the actual data.  The output format is unchanged.
-        """
-        params = {
-            "path": path,
-        }
-        if start is not None:
-            params["start"] = timestamp_to_string(start)
-        if end is not None:
-            params["end"] = timestamp_to_string(end)
-        if count:
-            params["count"] = 1
-        return self.http.get_gen("stream/extract", params)
-
-    def stream_count(self, path, start = None, end = None):
-        """
-        Return the number of rows of data in the stream that satisfy
-        the given timestamps.
-        """
-        counts = list(self.stream_extract(path, start, end, count = True))
-        return int(counts[0])
-
-class StreamInserter(object):
-    """Object returned by stream_insert_context() that manages
-    the insertion of rows of data into a particular path.
-
-    The basic data flow is that we are filling a contiguous interval
-    on the server, with no gaps, that extends from timestamp 'start'
-    to timestamp 'end'.  Data timestamps satisfy 'start <= t < end'.
-
-    Data is provided to .insert() as ASCII formatted data separated by
-    newlines.  The chunks of data passed to .insert() do not need to
-    match up with the newlines; less or more than one line can be passed.
-
-    1. The first inserted line begins a new interval that starts at
-    'start'.  If 'start' is not given, it is deduced from the first
-    line's timestamp.
-
-    2. Subsequent lines go into the same contiguous interval.  As lines
-    are inserted, this routine may make multiple insertion requests to
-    the server, but will structure the timestamps to leave no gaps.
-
-    3. The current contiguous interval can be completed by manually
-    calling .finalize(), which the context manager will also do
-    automatically.  This will send any remaining data to the server,
-    using the 'end' timestamp to end the interval.  If no 'end'
-    was provided, it is deduced from the last timestamp seen,
-    plus a small delta.
-
-    After a .finalize(), inserting new data goes back to step 1.
-
-    .update_start() can be called before step 1 to change the start
-    time for the interval.  .update_end() can be called before step 3
-    to change the end time for the interval.
-    """
-
-    # See design.md for a discussion of how much data to send.  This
-    # is a soft limit -- we might send up to twice as much or so
-    _max_data = 2 * 1024 * 1024
-    _max_data_after_send = 64 * 1024
-
-    def __init__(self, http, path, start = None, end = None):
-        """'http' is the httpclient object.  'path' is the database
-        path to insert to.  'start' and 'end' are used for the first
-        contiguous interval."""
-        self.last_response = None
-
-        self._http = http
-        self._path = path
-
-        # Start and end for the overall contiguous interval we're
-        # filling
-        self._interval_start = start
-        self._interval_end = end
-
-        # Current data we're building up to send.  Each string
-        # goes into the array, and gets joined all at once.
-        self._block_data = []
-        self._block_len = 0
-
-    def insert(self, data):
-        """Insert a chunk of ASCII formatted data in string form.  The
-        overall data must consist of lines terminated by '\\n'."""
-        length = len(data)
-        maxdata = self._max_data
-
-        if length > maxdata:
-            # This could make our buffer more than twice what we
-            # wanted to send, so split it up.  This is a bit
-            # inefficient, but the user really shouldn't be providing
-            # this much data at once.
-            for cut in range(0, length, maxdata):
-                self.insert(data[cut:(cut + maxdata)])
-            return
-
-        # Append this string to our list
-        self._block_data.append(data)
-        self._block_len += length
-
-        # Send the block once we have enough data
-        if self._block_len >= maxdata:
-            self._send_block(final = False)
-            if self._block_len >= self._max_data_after_send: # pragma: no cover
-                raise ValueError("too much data left over after trying"
-                                 " to send intermediate block; is it"
-                                 " missing newlines or malformed?")
-
-    def update_start(self, start):
-        """Update the start time for the next contiguous interval.
-        Call this before starting to insert data for a new interval,
-        for example, after .finalize()"""
-        self._interval_start = start
-
-    def update_end(self, end):
-        """Update the end time for the current contiguous interval.
-        Call this before .finalize()"""
-        self._interval_end = end
-
-    def finalize(self):
-        """Stop filling the current contiguous interval.
-        All outstanding data will be sent, and the interval end
-        time of the interval will be taken from the 'end' argument
-        used when initializing this class, or the most recent
-        value passed to update_end(), or the last timestamp plus
-        a small epsilon value if no other endpoint was provided.
-
-        If more data is inserted after a finalize(), it will become
-        part of a new interval and there may be a gap left in-between."""
-        self._send_block(final = True)
-
-    def _get_first_noncomment(self, block):
-        """Return the (start, end) indices of the first full line in
-        block that isn't a comment, or raise IndexError if
-        there isn't one."""
-        start = 0
-        while True:
-            end = block.find('\n', start)
-            if end < 0:
-                raise IndexError
-            if block[start] != '#':
-                return (start, (end + 1))
-            start = end + 1
-
-    def _get_last_noncomment(self, block):
-        """Return the (start, end) indices of the last full line in
-        block[:length] that isn't a comment, or raise IndexError if
-        there isn't one."""
-        end = block.rfind('\n')
-        if end <= 0:
-            raise IndexError
-        while True:
-            start = block.rfind('\n', 0, end)
-            if block[start + 1] != '#':
-                return ((start + 1), end)
-            if start == -1:
-                raise IndexError
-            end = start
-
-    def _send_block(self, final = False):
-        """Send data currently in the block.  The data sent will
-        consist of full lines only, so some might be left over."""
-        # Build the full string to send
-        block = "".join(self._block_data)
-
-        start_ts = self._interval_start
-        if start_ts is None:
-            # Pull start from the first line
-            try:
-                (spos, epos) = self._get_first_noncomment(block)
-                start_ts = extract_timestamp(block[spos:epos])
-            except (ValueError, IndexError):
-                pass # no timestamp is OK, if we have no data
-
-        if final:
-            # For a final block, it must end in a newline, and the
-            # ending timestamp is either the user-provided end,
-            # or the timestamp of the last line plus epsilon.
-            end_ts = self._interval_end
-            try:
-                if block[-1] != '\n':
-                    raise ValueError("final block didn't end with a newline")
-                if end_ts is None:
-                    (spos, epos) = self._get_last_noncomment(block)
-                    end_ts = extract_timestamp(block[spos:epos])
-                    end_ts += nilmdb.utils.time.epsilon
-            except (ValueError, IndexError):
-                pass # no timestamp is OK, if we have no data
-            self._block_data = []
-            self._block_len = 0
-
-            # Next block is completely fresh
-            self._interval_start = None
-            self._interval_end = None
-        else:
-            # An intermediate block, e.g. "line1\nline2\nline3\nline4"
-            # We need to save "line3\nline4" for the next block, and
-            # use the timestamp from "line3" as the ending timestamp
-            # for this one.
-            try:
-                (spos, epos) = self._get_last_noncomment(block)
-                end_ts = extract_timestamp(block[spos:epos])
-            except (ValueError, IndexError):
-                # If we found no timestamp, give up; we could send this
-                # block later when we have more data.
-                return
-            if spos == 0:
-                # Not enough data to send an intermediate block
-                return
-            if self._interval_end is not None and end_ts > self._interval_end:
-                # User gave us bad endpoints; send it anyway, and let
-                # the server complain so that the error is the same
-                # as if we hadn't done this chunking.
-                end_ts = self._interval_end
-            self._block_data = [ block[spos:] ]
-            self._block_len = (epos - spos)
-            block = block[:spos]
-
-            # Next block continues where this one ended
-            self._interval_start = end_ts
-
-        # Double check endpoints
-        if start_ts is None or end_ts is None:
-            # If the block has no non-comment lines, it's OK
-            try:
-                self._get_first_noncomment(block)
-            except IndexError:
-                return
-            raise ClientError("have data to send, but no start/end times")
-
-        # Send it
-        params = { "path": self._path,
-                   "start": timestamp_to_string(start_ts),
-                   "end": timestamp_to_string(end_ts) }
-        self.last_response = self._http.put("stream/insert", block, params)
-
-        return

nilmdb/client/errors.py

@@ -1,33 +0,0 @@
-"""HTTP client errors"""
-
-from nilmdb.utils.printf import *
-
-class Error(Exception):
-    """Base exception for both ClientError and ServerError responses"""
-    def __init__(self,
-                 status = "Unspecified error",
-                 message = None,
-                 url = None,
-                 traceback = None):
-        Exception.__init__(self, status)
-        self.status = status     # e.g. "400 Bad Request"
-        self.message = message   # textual message from the server
-        self.url = url           # URL we were requesting
-        self.traceback = traceback # server traceback, if available
-    def _format_error(self, show_url):
-        s = sprintf("[%s]", self.status)
-        if self.message:
-            s += sprintf(" %s", self.message)
-        if show_url and self.url: # pragma: no cover
-            s += sprintf(" (%s)", self.url)
-        if self.traceback: # pragma: no cover
-            s += sprintf("\nServer traceback:\n%s", self.traceback)
-        return s
-    def __str__(self):
-        return self._format_error(show_url = False)
-    def __repr__(self): # pragma: no cover
-        return self._format_error(show_url = True)
-class ClientError(Error):
-    pass
-class ServerError(Error):
-    pass

nilmdb/client/httpclient.py

@@ -1,133 +0,0 @@
-"""HTTP client library"""
-
-import nilmdb.utils
-from nilmdb.client.errors import ClientError, ServerError, Error
-
-import simplejson as json
-import urlparse
-import requests
-
-class HTTPClient(object):
-    """Class to manage and perform HTTP requests from the client"""
-    def __init__(self, baseurl = "", post_json = False):
-        """If baseurl is supplied, all other functions that take
-        a URL can be given a relative URL instead."""
-        # Verify / clean up URL
-        reparsed = urlparse.urlparse(baseurl).geturl()
-        if '://' not in reparsed:
-            reparsed = urlparse.urlparse("http://" + baseurl).geturl()
-        self.baseurl = reparsed
-
-        # Build Requests session object, enable SSL verification
-        self.session = requests.Session()
-        self.session.verify = True
-
-        # Saved response, so that tests can verify a few things.
-        self._last_response = {}
-
-        # Whether to send application/json POST bodies (versus
-        # x-www-form-urlencoded)
-        self.post_json = post_json
-
-    def _handle_error(self, url, code, body):
-        # Default variables for exception.  We use the entire body as
-        # the default message, in case we can't extract it from a JSON
-        # response.
-        args = { "url" : url,
-                 "status" : str(code),
-                 "message" : body,
-                 "traceback" : None }
-        try:
-            # Fill with server-provided data if we can
-            jsonerror = json.loads(body)
-            args["status"] = jsonerror["status"]
-            args["message"] = jsonerror["message"]
-            args["traceback"] = jsonerror["traceback"]
-        except Exception: # pragma: no cover
-            pass
-        if code >= 400 and code <= 499:
-            raise ClientError(**args)
-        else: # pragma: no cover
-            if code >= 500 and code <= 599:
-                if args["message"] is None:
-                    args["message"] = ("(no message; try disabling " +
-                                       "response.stream option in " +
-                                       "nilmdb.server for better debugging)")
-                raise ServerError(**args)
-            else:
-                raise Error(**args)
-
-    def close(self):
-        self.session.close()
-
-    def _do_req(self, method, url, query_data, body_data, stream, headers):
-        url = urlparse.urljoin(self.baseurl, url)
-        try:
-            response = self.session.request(method, url,
-                                            params = query_data,
-                                            data = body_data,
-                                            stream = stream,
-                                            headers = headers)
-        except requests.RequestException as e:
-            raise ServerError(status = "502 Error", url = url,
-                              message = str(e.message))
-        if response.status_code != 200:
-            self._handle_error(url, response.status_code, response.content)
-        self._last_response = response
-        if response.headers["content-type"] in ("application/json",
-                                                "application/x-json-stream"):
-            return (response, True)
-        else:
-            return (response, False)
-
-    # Normal versions that return data directly
-    def _req(self, method, url, query = None, body = None, headers = None):
-        """
-        Make a request and return the body data as a string or parsed
-        JSON object, or raise an error if it contained an error.
-        """
-        (response, isjson) = self._do_req(method, url, query, body,
-                                          stream = False, headers = headers)
-        if isjson:
-            return json.loads(response.content)
-        return response.content
-
-    def get(self, url, params = None):
-        """Simple GET (parameters in URL)"""
-        return self._req("GET", url, params, None)
-
-    def post(self, url, params = None):
-        """Simple POST (parameters in body)"""
-        if self.post_json:
-            return self._req("POST", url, None,
-                             json.dumps(params),
-                             { 'Content-type': 'application/json' })
-        else:
-            return self._req("POST", url, None, params)
-
-    def put(self, url, data, params = None):
-        """Simple PUT (parameters in URL, data in body)"""
-        return self._req("PUT", url, params, data)
-
-    # Generator versions that return data one line at a time.
-    def _req_gen(self, method, url, query = None, body = None, headers = None):
-        """
-        Make a request and return a generator that gives back strings
-        or JSON decoded lines of the body data, or raise an error if
-        it contained an eror.
-        """
-        (response, isjson) = self._do_req(method, url, query, body,
-                                          stream = True, headers = headers)
-        if isjson:
-            for line in response.iter_lines():
-                yield json.loads(line)
-        else:
-            for line in response.iter_lines():
-                yield line
-
-    def get_gen(self, url, params = None):
-        """Simple GET (parameters in URL) returning a generator"""
-        return self._req_gen("GET", url, params)
-
-    # Not much use for a POST or PUT generator, since they don't
-    # return much data.

nilmdb/cmdline/__init__.py

@@ -1,3 +0,0 @@
-"""nilmdb.cmdline"""
-
-from nilmdb.cmdline.cmdline import Cmdline

nilmdb/cmdline/cmdline.py

@@ -1,159 +0,0 @@
-"""Command line client functionality"""
-
-import nilmdb.client
-
-from nilmdb.utils.printf import *
-from nilmdb.utils import datetime_tz
-import nilmdb.utils.time
-
-import sys
-import os
-import argparse
-from argparse import ArgumentDefaultsHelpFormatter as def_form
-
-try: # pragma: no cover
-    import argcomplete
-except ImportError: # pragma: no cover
-    argcomplete = None
-
-# Valid subcommands.  Defined in separate files just to break
-# things up -- they're still called with Cmdline as self.
-subcommands = [ "help", "info", "create", "list", "metadata",
-                "insert", "extract", "remove", "destroy",
-                "intervals", "rename" ]
-
-# Import the subcommand modules
-subcmd_mods = {}
-for cmd in subcommands:
-    subcmd_mods[cmd] = __import__("nilmdb.cmdline." + cmd, fromlist = [ cmd ])
-
-class JimArgumentParser(argparse.ArgumentParser):
-    def error(self, message):
-        self.print_usage(sys.stderr)
-        self.exit(2, sprintf("error: %s\n", message))
-
-class Complete(object): # pragma: no cover
-    # Completion helpers, for using argcomplete (see
-    # extras/nilmtool-bash-completion.sh)
-    def escape(self, s):
-        quote_chars = [ "\\", "\"", "'", " " ]
-        for char in quote_chars:
-            s = s.replace(char, "\\" + char)
-        return s
-
-    def none(self, prefix, parsed_args, **kwargs):
-        return []
-    rate = none
-    time = none
-    url = none
-
-    def path(self, prefix, parsed_args, **kwargs):
-        client = nilmdb.client.Client(parsed_args.url)
-        return ( self.escape(s[0])
-                 for s in client.stream_list()
-                 if s[0].startswith(prefix) )
-
-    def layout(self, prefix, parsed_args, **kwargs):
-        types = [ "int8", "int16", "int32", "int64",
-                  "uint8", "uint16", "uint32", "uint64",
-                  "float32", "float64" ]
-        layouts = []
-        for i in range(1,10):
-            layouts.extend([(t + "_" + str(i)) for t in types])
-        return ( l for l in layouts if l.startswith(prefix) )
-
-    def meta_key(self, prefix, parsed_args, **kwargs):
-        return (kv.split('=')[0] for kv
-                in self.meta_keyval(prefix, parsed_args, **kwargs))
-
-    def meta_keyval(self, prefix, parsed_args, **kwargs):
-        client = nilmdb.client.Client(parsed_args.url)
-        path = parsed_args.path
-        if not path:
-            return []
-        return ( self.escape(k + '=' + v)
-                 for (k,v) in client.stream_get_metadata(path).iteritems()
-                 if k.startswith(prefix) )
-
-
-class Cmdline(object):
-
-    def __init__(self, argv = None):
-        self.argv = argv or sys.argv[1:]
-        self.client = None
-        self.def_url = os.environ.get("NILMDB_URL", "http://localhost:12380")
-        self.subcmd = {}
-        self.complete = Complete()
-
-    def arg_time(self, toparse):
-        """Parse a time string argument"""
-        try:
-            return nilmdb.utils.time.parse_time(toparse)
-        except ValueError as e:
-            raise argparse.ArgumentTypeError(sprintf("%s \"%s\"",
-                                                     str(e), toparse))
-
-    # Set up the parser
-    def parser_setup(self):
-        self.parser = JimArgumentParser(add_help = False,
-                                        formatter_class = def_form)
-
-        group = self.parser.add_argument_group("General options")
-        group.add_argument("-h", "--help", action='help',
-                           help='show this help message and exit')
-        group.add_argument("-V", "--version", action="version",
-                           version = nilmdb.__version__)
-
-        group = self.parser.add_argument_group("Server")
-        group.add_argument("-u", "--url", action="store",
-                           default=self.def_url,
-                           help="NilmDB server URL (default: %(default)s)"
-                           ).completer = self.complete.url
-
-        sub = self.parser.add_subparsers(
-            title="Commands", dest="command",
-            description="Use 'help command' or 'command --help' for more "
-            "details on a particular command.")
-
-        # Set up subcommands (defined in separate files)
-        for cmd in subcommands:
-            self.subcmd[cmd] = subcmd_mods[cmd].setup(self, sub)
-
-    def die(self, formatstr, *args):
-        fprintf(sys.stderr, formatstr + "\n", *args)
-        if self.client:
-            self.client.close()
-        sys.exit(-1)
-
-    def run(self):
-        # Clear cached timezone, so that we can pick up timezone changes
-        # while running this from the test suite.
-        datetime_tz._localtz = None
-
-        # Run parser
-        self.parser_setup()
-        if argcomplete: # pragma: no cover
-            argcomplete.autocomplete(self.parser)
-        self.args = self.parser.parse_args(self.argv)
-
-        # Run arg verify handler if there is one
-        if "verify" in self.args:
-            self.args.verify(self)
-
-        self.client = nilmdb.client.Client(self.args.url)
-
-        # Make a test connection to make sure things work,
-        # unless the particular command requests that we don't.
-        if "no_test_connect" not in self.args:
-            try:
-                server_version = self.client.version()
-            except nilmdb.client.Error as e:
-                self.die("error connecting to server: %s", str(e))
-
-        # Now dispatch client request to appropriate function.  Parser
-        # should have ensured that we don't have any unknown commands
-        # here.
-        retval = self.args.handler(self) or 0
-
-        self.client.close()
-        sys.exit(retval)

nilmdb/cmdline/create.py

@@ -1,37 +0,0 @@
-from nilmdb.utils.printf import *
-import nilmdb.client
-
-from argparse import RawDescriptionHelpFormatter as raw_form
-
-def setup(self, sub):
-    cmd = sub.add_parser("create", help="Create a new stream",
-                         formatter_class = raw_form,
-                         description="""
-Create a new empty stream at the specified path and with the specified
-layout type.
-
-Layout types are of the format: type_count
-
-  'type' is a data type like 'float32', 'float64', 'uint16', 'int32', etc.
-
-  'count' is the number of columns of this type.
-
-  For example, 'float32_8' means the data for this stream has 8 columns of
-  32-bit floating point values.
-""")
-    cmd.set_defaults(handler = cmd_create)
-    group = cmd.add_argument_group("Required arguments")
-    group.add_argument("path",
-                       help="Path (in database) of new stream, e.g. /foo/bar",
-                       ).completer = self.complete.path
-    group.add_argument("layout",
-                       help="Layout type for new stream, e.g. float32_8",
-                       ).completer = self.complete.layout
-    return cmd
-
-def cmd_create(self):
-    """Create new stream"""
-    try:
-        self.client.stream_create(self.args.path, self.args.layout)
-    except nilmdb.client.ClientError as e:
-        self.die("error creating stream: %s", str(e))

nilmdb/cmdline/destroy.py

@@ -1,26 +0,0 @@
-from nilmdb.utils.printf import *
-import nilmdb.client
-
-from argparse import ArgumentDefaultsHelpFormatter as def_form
-
-def setup(self, sub):
-    cmd = sub.add_parser("destroy", help="Delete a stream and all data",
-                         formatter_class = def_form,
-                         description="""
-                         Destroy the stream at the specified path.  All
-                         data and metadata related to the stream is
-                         permanently deleted.
-                         """)
-    cmd.set_defaults(handler = cmd_destroy)
-    group = cmd.add_argument_group("Required arguments")
-    group.add_argument("path",
-                       help="Path of the stream to delete, e.g. /foo/bar",
-                       ).completer = self.complete.path
-    return cmd
-
-def cmd_destroy(self):
-    """Destroy stream"""
-    try:
-        self.client.stream_destroy(self.args.path)
-    except nilmdb.client.ClientError as e:
-        self.die("error destroying stream: %s", str(e))

nilmdb/cmdline/extract.py

@@ -1,76 +0,0 @@
-from __future__ import print_function
-from nilmdb.utils.printf import *
-import nilmdb.client
-
-def setup(self, sub):
-    cmd = sub.add_parser("extract", help="Extract data",
-                         description="""
-                         Extract data from a stream.
-                         """)
-    cmd.set_defaults(verify = cmd_extract_verify,
-                     handler = cmd_extract)
-
-    group = cmd.add_argument_group("Data selection")
-    group.add_argument("path",
-                       help="Path of stream, e.g. /foo/bar",
-                       ).completer = self.complete.path
-    group.add_argument("-s", "--start", required=True,
-                       metavar="TIME", type=self.arg_time,
-                       help="Starting timestamp (free-form, inclusive)",
-                       ).completer = self.complete.time
-    group.add_argument("-e", "--end", required=True,
-                       metavar="TIME", type=self.arg_time,
-                       help="Ending timestamp (free-form, noninclusive)",
-                       ).completer = self.complete.time
-
-    group = cmd.add_argument_group("Output format")
-    group.add_argument("-b", "--bare", action="store_true",
-                       help="Exclude timestamps from output lines")
-    group.add_argument("-a", "--annotate", action="store_true",
-                       help="Include comments with some information "
-                       "about the stream")
-    group.add_argument("-T", "--timestamp-raw", action="store_true",
-                       help="Show raw timestamps in annotated information")
-    group.add_argument("-c", "--count", action="store_true",
-                       help="Just output a count of matched data points")
-    return cmd
-
-def cmd_extract_verify(self):
-    if self.args.start is not None and self.args.end is not None:
-        if self.args.start > self.args.end:
-            self.parser.error("start is after end")
-
-def cmd_extract(self):
-    streams = self.client.stream_list(self.args.path)
-    if len(streams) != 1:
-        self.die("error getting stream info for path %s", self.args.path)
-    layout = streams[0][1]
-
-    if self.args.timestamp_raw:
-        time_string = nilmdb.utils.time.timestamp_to_string
-    else:
-        time_string = nilmdb.utils.time.timestamp_to_human
-
-    if self.args.annotate:
-        printf("# path: %s\n", self.args.path)
-        printf("# layout: %s\n", layout)
-        printf("# start: %s\n", time_string(self.args.start))
-        printf("# end: %s\n", time_string(self.args.end))
-
-    printed = False
-    for dataline in self.client.stream_extract(self.args.path,
-                                               self.args.start,
-                                               self.args.end,
-                                               self.args.count):
-        if self.args.bare and not self.args.count:
-            # Strip timestamp (first element).  Doesn't make sense
-            # if we are only returning a count.
-            dataline = ' '.join(dataline.split(' ')[1:])
-        print(dataline)
-        printed = True
-    if not printed:
-        if self.args.annotate:
-            printf("# no data\n")
-        return 2
-
-    return 0

nilmdb/cmdline/help.py

@@ -1,26 +0,0 @@
-from nilmdb.utils.printf import *
-
-import argparse
-import sys
-
-def setup(self, sub):
-    cmd = sub.add_parser("help", help="Show detailed help for a command",
-                         description="""
-                         Show help for a command. 'help command' is
-                         the same as 'command --help'.
-                         """)
-    cmd.set_defaults(handler = cmd_help)
-    cmd.set_defaults(no_test_connect = True)
-    cmd.add_argument("command", nargs="?",
-                     help="Command to get help about")
-    cmd.add_argument("rest", nargs=argparse.REMAINDER,
-                     help=argparse.SUPPRESS)
-    return cmd
-
-def cmd_help(self):
-    if self.args.command in self.subcmd:
-        self.subcmd[self.args.command].print_help()
-    else:
-        self.parser.print_help()
-
-    return

nilmdb/cmdline/info.py

@@ -1,25 +0,0 @@
-import nilmdb.client
-from nilmdb.utils.printf import *
-from nilmdb.utils import human_size
-
-from argparse import ArgumentDefaultsHelpFormatter as def_form
-
-def setup(self, sub):
-    cmd = sub.add_parser("info", help="Server information",
-                         formatter_class = def_form,
-                         description="""
-                         List information about the server, like
-                         version.
-                         """)
-    cmd.set_defaults(handler = cmd_info)
-    return cmd
-
-def cmd_info(self):
-    """Print info about the server"""
-    printf("Client version: %s\n", nilmdb.__version__)
-    printf("Server version: %s\n", self.client.version())
-    printf("Server URL: %s\n", self.client.geturl())
-    dbinfo = self.client.dbinfo()
-    printf("Server database path: %s\n", dbinfo["path"])
-    printf("Server database size: %s\n", human_size(dbinfo["size"]))
-    printf("Server database free space: %s\n", human_size(dbinfo["free"]))

nilmdb/cmdline/insert.py

@@ -1,131 +0,0 @@
-from nilmdb.utils.printf import *
-import nilmdb.client
-import nilmdb.utils.timestamper as timestamper
-import nilmdb.utils.time
-
-import sys
-
-def setup(self, sub):
-    cmd = sub.add_parser("insert", help="Insert data",
-                         description="""
-                         Insert data into a stream.
-                         """)
-    cmd.set_defaults(verify = cmd_insert_verify,
-                     handler = cmd_insert)
-    cmd.add_argument("-q", "--quiet", action='store_true',
-                     help='suppress unnecessary messages')
-
-    group = cmd.add_argument_group("Timestamping",
-                                   description="""
-                                   To add timestamps, specify the
-                                   arguments --timestamp and --rate,
-                                   and provide a starting time.
-                                   """)
-
-    group.add_argument("-t", "--timestamp", action="store_true",
-                       help="Add timestamps to each line")
-    group.add_argument("-r", "--rate", type=float,
-                       help="Data rate, in Hz",
-                       ).completer = self.complete.rate
-
-    group = cmd.add_argument_group("Start time",
-                                   description="""
-                                   Start time may be manually
-                                   specified with --start, or guessed
-                                   from the filenames using
-                                   --filename.  Set the TZ environment
-                                   variable to change the default
-                                   timezone.""")
-
-    exc = group.add_mutually_exclusive_group()
-    exc.add_argument("-s", "--start",
-                     metavar="TIME", type=self.arg_time,
-                     help="Starting timestamp (free-form)",
-                     ).completer = self.complete.time
-    exc.add_argument("-f", "--filename", action="store_true",
-                     help="Use filename to determine start time")
-
-    group = cmd.add_argument_group("End time",
-                                   description="""
-                                   End time for the overall stream.
-                                   (required when not using --timestamp).
-                                   Set the TZ environment
-                                   variable to change the default
-                                   timezone.""")
-    group.add_argument("-e", "--end",
-                       metavar="TIME", type=self.arg_time,
-                       help="Ending timestamp (free-form)",
-                       ).completer = self.complete.time
-
-    group = cmd.add_argument_group("Required parameters")
-    group.add_argument("path",
-                       help="Path of stream, e.g. /foo/bar",
-                       ).completer = self.complete.path
-    group.add_argument("file", nargs = '?', default='-',
-                       help="File to insert (default: - (stdin))")
-    return cmd
-
-def cmd_insert_verify(self):
-    if self.args.timestamp:
-        if not self.args.rate:
-            self.die("error: --rate is needed, but was not specified")
-        if not self.args.filename and self.args.start is None:
-            self.die("error: need --start or --filename when adding timestamps")
-    else:
-        if self.args.start is None or self.args.end is None:
-            self.die("error: when not adding timestamps, --start and "
-                     "--end are required")
-
-def cmd_insert(self):
-    # Find requested stream
-    streams = self.client.stream_list(self.args.path)
-    if len(streams) != 1:
-        self.die("error getting stream info for path %s", self.args.path)
-
-    arg = self.args
-
-    try:
-        filename = arg.file
-        if filename == '-':
-            infile = sys.stdin
-        else:
-            try:
-                infile = open(filename, "rb")
-            except IOError:
-                self.die("error opening input file %s", filename)
-
-        if arg.start is None:
-            try:
-                arg.start = nilmdb.utils.time.parse_time(filename)
-            except ValueError:
-                self.die("error extracting start time from filename '%s'",
-                         filename)
-
-        if arg.timestamp:
-            data = timestamper.TimestamperRate(infile, arg.start, arg.rate)
-        else:
-            data = iter(lambda: infile.read(1048576), '')
-
-        # Print info
-        if not arg.quiet:
-            printf(" Input file: %s\n", filename)
-            printf(" Start time: %s\n",
-                   nilmdb.utils.time.timestamp_to_human(arg.start))
-            if arg.end:
-                printf("   End time: %s\n",
-                       nilmdb.utils.time.timestamp_to_human(arg.end))
-            if arg.timestamp:
-                printf("Timestamper: %s\n", str(data))
-
-        # Insert the data
-        self.client.stream_insert(arg.path, data, arg.start, arg.end)
-
-    except nilmdb.client.Error as e:
-        # TODO: It would be nice to be able to offer better errors
-        # here, particularly in the case of overlap, which just shows
-        # ugly bracketed ranges of 16-digit numbers and a mangled URL.
-        # Need to consider adding something like e.prettyprint()
-        # that is smarter about the contents of the error.
-        self.die("error inserting data: %s", str(e))
-
-    return

nilmdb/cmdline/intervals.py

@@ -1,66 +0,0 @@
-from nilmdb.utils.printf import *
-import nilmdb.utils.time
-
-import fnmatch
-import argparse
-from argparse import ArgumentDefaultsHelpFormatter as def_form
-
-def setup(self, sub):
-    cmd = sub.add_parser("intervals", help="List intervals",
-                         formatter_class = def_form,
-                         description="""
-                         List intervals in a stream, similar to
-                         'list --detail path'.
-
-                         If '--diff diffpath' is provided, only
-                         interval ranges that are present in 'path'
-                         and not present in 'diffpath' are printed.
-                         """)
-    cmd.set_defaults(verify = cmd_intervals_verify,
-                     handler = cmd_intervals)
-
-    group = cmd.add_argument_group("Stream selection")
-    group.add_argument("path", metavar="PATH",
-                       help="List intervals for this path",
-                       ).completer = self.complete.path
-    group.add_argument("-d", "--diff", metavar="PATH",
-                       help="Subtract intervals from this path",
-                       ).completer = self.complete.path
-
-    group = cmd.add_argument_group("Interval details")
-    group.add_argument("-s", "--start",
-                       metavar="TIME", type=self.arg_time,
-                       help="Starting timestamp for intervals "
-                       "(free-form, inclusive)",
-                       ).completer = self.complete.time
-    group.add_argument("-e", "--end",
-                       metavar="TIME", type=self.arg_time,
-                       help="Ending timestamp for intervals "
-                       "(free-form, noninclusive)",
-                       ).completer = self.complete.time
-
-    group = cmd.add_argument_group("Misc options")
-    group.add_argument("-T", "--timestamp-raw", action="store_true",
-                       help="Show raw timestamps when printing times")
-
-    return cmd
-
-def cmd_intervals_verify(self):
-    if self.args.start is not None and self.args.end is not None:
-        if self.args.start >= self.args.end:
-            self.parser.error("start must precede end")
-
-def cmd_intervals(self):
-    """List intervals in a stream"""
-    if self.args.timestamp_raw:
-        time_string = nilmdb.utils.time.timestamp_to_string
-    else:
-        time_string = nilmdb.utils.time.timestamp_to_human
-
-    try:
-           for (start, end) in self.client.stream_intervals(
-               self.args.path, self.args.start, self.args.end, self.args.diff):
-               printf("[ %s -> %s ]\n", time_string(start), time_string(end))
-    except nilmdb.client.ClientError as e:
-        self.die("error listing intervals: %s", str(e))
-

nilmdb/cmdline/list.py

@@ -1,108 +0,0 @@
-from nilmdb.utils.printf import *
-import nilmdb.utils.time
-
-import fnmatch
-import argparse
-from argparse import ArgumentDefaultsHelpFormatter as def_form
-
-def setup(self, sub):
-    cmd = sub.add_parser("list", help="List streams",
-                         formatter_class = def_form,
-                         description="""
-                         List streams available in the database,
-                         optionally filtering by layout or path.  Wildcards
-                         are accepted.
-                         """)
-    cmd.set_defaults(verify = cmd_list_verify,
-                     handler = cmd_list)
-
-    group = cmd.add_argument_group("Stream filtering")
-    group.add_argument("-p", "--path", metavar="PATH", default="*",
-                       help="Match only this path (-p can be omitted)",
-                       ).completer = self.complete.path
-    group.add_argument("path_positional", default="*",
-                       nargs="?", help=argparse.SUPPRESS,
-                       ).completer = self.complete.path
-    group.add_argument("-l", "--layout", default="*",
-                       help="Match only this stream layout",
-                       ).completer = self.complete.layout
-
-    group = cmd.add_argument_group("Interval info")
-    group.add_argument("-E", "--ext", action="store_true",
-                       help="Show extended stream info, like interval "
-                       "extents and row count")
-
-    group = cmd.add_argument_group("Interval details")
-    group.add_argument("-d", "--detail", action="store_true",
-                       help="Show available data time intervals")
-    group.add_argument("-s", "--start",
-                       metavar="TIME", type=self.arg_time,
-                       help="Starting timestamp for intervals "
-                       "(free-form, inclusive)",
-                       ).completer = self.complete.time
-    group.add_argument("-e", "--end",
-                       metavar="TIME", type=self.arg_time,
-                       help="Ending timestamp for intervals "
-                       "(free-form, noninclusive)",
-                       ).completer = self.complete.time
-
-    group = cmd.add_argument_group("Misc options")
-    group.add_argument("-T", "--timestamp-raw", action="store_true",
-                       help="Show raw timestamps when printing times")
-
-    return cmd
-
-def cmd_list_verify(self):
-    # A hidden "path_positional" argument lets the user leave off the
-    # "-p" when specifying the path.  Handle it here.
-    got_opt = self.args.path != "*"
-    got_pos = self.args.path_positional != "*"
-    if got_pos:
-        if got_opt:
-            self.parser.error("too many paths specified")
-        else:
-            self.args.path = self.args.path_positional
-
-    if self.args.start is not None and self.args.end is not None:
-        if self.args.start >= self.args.end:
-            self.parser.error("start must precede end")
-
-    if self.args.start is not None or self.args.end is not None:
-        if not self.args.detail:
-            self.parser.error("--start and --end only make sense with --detail")
-
-def cmd_list(self):
-    """List available streams"""
-    streams = self.client.stream_list(extended = True)
-
-    if self.args.timestamp_raw:
-        time_string = nilmdb.utils.time.timestamp_to_string
-    else:
-        time_string = nilmdb.utils.time.timestamp_to_human
-
-    for stream in streams:
-        (path, layout, int_min, int_max, rows, time) = stream[:6]
-        if not (fnmatch.fnmatch(path, self.args.path) and
-                fnmatch.fnmatch(layout, self.args.layout)):
-            continue
-
-        printf("%s %s\n", path, layout)
-
-        if self.args.ext:
-            if int_min is None or int_max is None:
-                printf("  interval extents: (no data)\n")
-            else:
-                printf("  interval extents: %s -> %s\n",
-                       time_string(int_min), time_string(int_max))
-            printf("        total data: %d rows, %.6f seconds\n",
-                   rows or 0,
-                   nilmdb.utils.time.timestamp_to_seconds(time or 0))
-
-        if self.args.detail:
-            printed = False
-            for (start, end) in self.client.stream_intervals(
-                path, self.args.start, self.args.end):
-                printf("  [ %s -> %s ]\n", time_string(start), time_string(end))
-                printed = True
-            if not printed:
-                printf("  (no intervals)\n")

nilmdb/cmdline/metadata.py

@@ -1,70 +0,0 @@
-from nilmdb.utils.printf import *
-import nilmdb
-import nilmdb.client
-
-def setup(self, sub):
-    cmd = sub.add_parser("metadata", help="Get or set stream metadata",
-                         description="""
-                         Get or set key=value metadata associated with
-                         a stream.
-                         """,
-                         usage="%(prog)s path [-g [key ...] | "
-                         "-s key=value [...] | -u key=value [...]]")
-    cmd.set_defaults(handler = cmd_metadata)
-
-    group = cmd.add_argument_group("Required arguments")
-    group.add_argument("path",
-                       help="Path of stream, e.g. /foo/bar",
-                       ).completer = self.complete.path
-
-    group = cmd.add_argument_group("Actions")
-    exc = group.add_mutually_exclusive_group()
-    exc.add_argument("-g", "--get", nargs="*", metavar="key",
-                     help="Get metadata for specified keys (default all)",
-                     ).completer = self.complete.meta_key
-    exc.add_argument("-s", "--set", nargs="+", metavar="key=value",
-                     help="Replace all metadata with provided "
-                     "key=value pairs",
-                     ).completer = self.complete.meta_keyval
-    exc.add_argument("-u", "--update", nargs="+", metavar="key=value",
-                     help="Update metadata using provided "
-                     "key=value pairs",
-                     ).completer = self.complete.meta_keyval
-    return cmd
-
-def cmd_metadata(self):
-    """Manipulate metadata"""
-    if self.args.set is not None or self.args.update is not None:
-        # Either set, or update
-        if self.args.set is not None:
-            keyvals = self.args.set
-            handler = self.client.stream_set_metadata
-        else:
-            keyvals = self.args.update
-            handler = self.client.stream_update_metadata
-
-        # Extract key=value pairs
-        data = {}
-        for keyval in keyvals:
-            kv = keyval.split('=')
-            if len(kv) != 2 or kv[0] == "":
-                self.die("error parsing key=value argument '%s'", keyval)
-            data[kv[0]] = kv[1]
-
-        # Make the call
-        try:
-            handler(self.args.path, data)
-        except nilmdb.client.ClientError as e:
-            self.die("error setting/updating metadata: %s", str(e))
-    else:
-        # Get (or unspecified)
-        keys = self.args.get or None
-        try:
-            data = self.client.stream_get_metadata(self.args.path, keys)
-        except nilmdb.client.ClientError as e:
-            self.die("error getting metadata: %s", str(e))
-        for key, value in sorted(data.items()):
-            # Omit nonexistant keys
-            if value is None:
-                value = ""
-            printf("%s=%s\n", key, value)

nilmdb/cmdline/remove.py

@@ -1,40 +0,0 @@
-from nilmdb.utils.printf import *
-import nilmdb.client
-
-def setup(self, sub):
-    cmd = sub.add_parser("remove", help="Remove data",
-                         description="""
-                         Remove all data from a specified time range within a
-                         stream.
-                         """)
-    cmd.set_defaults(handler = cmd_remove)
-
-    group = cmd.add_argument_group("Data selection")
-    group.add_argument("path",
-                       help="Path of stream, e.g. /foo/bar",
-                       ).completer = self.complete.path
-    group.add_argument("-s", "--start", required=True,
-                       metavar="TIME", type=self.arg_time,
-                       help="Starting timestamp (free-form, inclusive)",
-                       ).completer = self.complete.time
-    group.add_argument("-e", "--end", required=True,
-                       metavar="TIME", type=self.arg_time,
-                       help="Ending timestamp (free-form, noninclusive)",
-                       ).completer = self.complete.time
-
-    group = cmd.add_argument_group("Output format")
-    group.add_argument("-c", "--count", action="store_true",
-                       help="Output number of data points removed")
-    return cmd
-
-def cmd_remove(self):
-    try:
-        count = self.client.stream_remove(self.args.path,
-                                          self.args.start, self.args.end)
-    except nilmdb.client.ClientError as e:
-        self.die("error removing data: %s", str(e))
-
-    if self.args.count:
-        printf("%d\n", count)
-
-    return 0

nilmdb/cmdline/rename.py

@@ -1,31 +0,0 @@
-from nilmdb.utils.printf import *
-import nilmdb.client
-
-from argparse import ArgumentDefaultsHelpFormatter as def_form
-
-def setup(self, sub):
-    cmd = sub.add_parser("rename", help="Rename a stream",
-                         formatter_class = def_form,
-                         description="""
-                         Rename a stream.
-
-                         Only the stream's path is renamed; no
-                         metadata is changed.
-                         """)
-    cmd.set_defaults(handler = cmd_rename)
-    group = cmd.add_argument_group("Required arguments")
-    group.add_argument("oldpath",
-                       help="Old path, e.g. /foo/old",
-                       ).completer = self.complete.path
-    group.add_argument("newpath",
-                       help="New path, e.g. /foo/bar/new",
-                       ).completer = self.complete.path
-
-    return cmd
-
-def cmd_rename(self):
-    """Rename a stream"""
-    try:
-        self.client.stream_rename(self.args.oldpath, self.args.newpath)
-    except nilmdb.client.ClientError as e:
-        self.die("error renaming stream: %s", str(e))

nilmdb/fileinterval.py

@@ -0,0 +1,37 @@
+"""FileInterval
+
+An Interval that is backed with file data storage"""
+
+from nilmdb.interval import Interval, IntervalSet, IntervalError
+from datetime import datetime
+import bisect
+
+class FileInterval(Interval):
+    """Represents an interval of time and its corresponding data"""
+
+    def __init__(self, start, end, 
+                 filename, 
+                 start_offset = None, end_offset = None):
+        self.start = start
+        self.end = end
+        self.filename = filename
+        if start_offset is None:
+            start_offset = 0
+        self.start_offset = start_offset
+        if end_offset is None:
+            f = open(filename, 'rb')
+            f.seek(0, os.SEEK_END)
+            end_offset = f.tell()
+        self.end_offset = end_offset
+
+    def __setattr__(self, name, value):
+        pass
+
+    def subset(self, start, end):
+        """Return a new Interval that is a subset of this one"""
+        # TODO: Any magic regarding file/offset/length mapping for subsets
+        if (start < self.start or end > self.end):
+            raise IntervalError("not a subset")
+        return FileInterval(start, end)            
+
+    

nilmdb/interval.py

@@ -0,0 +1,205 @@
+"""Interval and IntervalSet
+
+Represents an interval of time, and a sorted set of such intervals"""
+
+from datetime import datetime
+import bisect
+
+class IntervalError(Exception):
+    """Error due to interval overlap, etc"""
+    pass
+
+class Interval(object):
+    """Represents an interval of time"""
+
+    start = None
+    end = None
+
+    def __init__(self, start, end):
+        self.start = start
+        self.end = end
+
+    def __repr__(self):
+        return "Interval(" + repr(self.start) + ", " + repr(self.end) + ")"
+
+    def __str__(self):
+        return "[" + str(self.start) + " -> " + str(self.end) + "]"
+
+    def __setattr__(self, name, value):
+        """Set attribute"""
+        # TODO: If we need to manipulate file names, offsets, lengths, etc,
+        # based on start and end time changing, maybe this is the right spot?
+        # Or we could just disallow changing it here.
+        if not isinstance(value, datetime):
+            raise IntervalError("Must set datetime values")
+        self.__dict__[name] = value
+        if (type(self.start) is type(self.end)):
+            if (self.start > self.end):
+                raise IntervalError("Interval start must precede interval end")
+
+    def __cmp__(self, other):
+        """Compare two intervals.  If non-equal, order by start then end"""
+        if not isinstance(other, Interval):
+            raise TypeError("Can't compare to non-interval")
+        if (self.start == other.start):
+            if (self.end < other.end):
+                return -1
+            if (self.end > other.end):
+                return 1
+            return 0
+        if (self.start < other.start):
+            return -1
+        return 1
+                
+    def intersects(self, other):
+        """Return True if two Interval objects intersect"""
+        if (not isinstance(other, Interval)):
+            raise TypeError("need Interval for intersection test")
+        if (self.end <= other.start or
+            self.start >= other.end):
+            return False
+        else:
+            return True
+
+    def is_adjacent(self, other):
+        """Return True if two Intervals are adjacent (same end or start)"""
+        if (not isinstance(other, Interval)):
+            raise TypeError("need Interval for adjacency test")
+        if (self.end == other.start or
+            self.start == other.end):
+            return True
+        else:
+            return False
+
+    def subset(self, start, end):
+        """Return a new Interval that is a subset of this one"""
+        # TODO: Any magic regarding file/offset/length mapping for subsets
+        if (start < self.start or end > self.end):
+            raise IntervalError("not a subset")
+        return Interval(start, end)            
+
+class IntervalSet(object):
+    """A non-intersecting set of intervals
+
+    Kept sorted internally"""
+
+    def __init__(self, iterable=None):
+        self.data = []
+        if iterable is not None:
+            if isinstance(iterable, Interval):
+                iterable = [iterable]
+            self._add_intervals(iterable)
+
+    def __iter__(self):
+        return self.data.__iter__()
+
+    def __repr__(self):
+        return "IntervalSet(" + repr(list(self.data)) + ")"
+
+    def __cmp__(self, other):
+        # compare isn't supported, they don't really have an ordering
+        raise TypeError("can't compare IntervalSets with cmp()")
+
+    def __eq__(self, other):
+        """Test equality of two IntervalSets.
+
+        Treats adjacent Intervals as equivalent to one long interval,
+        so this function really tests whether the IntervalSets cover
+        the same spans of time."""
+        if not isinstance(other, IntervalSet):
+            return False
+        i = 0
+        j = 0
+        outside = True
+        try:
+            while True:
+                if (outside):
+                    # To match, we need to be finished this set
+                    if (i >= len(self) and j >= len(other)):
+                        return True
+                    # Or the starts need to match
+                    if (self[i].start != other[j].start):
+                        return False
+                    outside = False
+                else:
+                    # We can move on if the two interval ends match
+                    if (self[i].end == other[j].end):
+                        i += 1
+                        j += 1
+                        outside = True
+                    else:
+                        # Whichever ends first needs to be adjacent to the next
+                        if (self[i].end < other[j].end):
+                            if (not self[i].is_adjacent(self[i+1])):
+                                return False
+                            i += 1
+                        else:
+                            if (not other[j].is_adjacent(other[j+1])):
+                                return False
+                            j += 1
+        except IndexError:
+            return False
+
+    def __ne__(self, other):
+        return not self.__eq__(other)
+
+    def __len__(self):
+        return len(self.data)
+
+    def __getitem__(self, key):
+        return self.data.__getitem__(key)
+
+    def __iadd__(self, other):
+        """Inplace add -- modifies self
+
+        This throws an exception if the regions being added intersect."""
+        if isinstance(other, Interval):
+            other = [other]
+        self._add_intervals(other)
+        return self
+        
+    def __add__(self, other):
+        """Add -- returns a new object
+
+        This throws an exception if the regions being added intersect."""
+        new = IntervalSet(self)
+        new += IntervalSet(other)
+        return new
+
+    def __and__(self, other):
+        """Compute a new IntervalSet from the intersection of two others
+
+        Output intervals are built as subsets of the intervals in the
+        first argument (self)."""
+        # If we were given a set, intersect with each interval in that set
+        if isinstance(other, IntervalSet):
+            out = IntervalSet()
+            for interval in other.data:
+                out += self & interval
+            return out
+
+        if not isinstance(other, Interval):
+            raise TypeError("can't intersect with that type")
+
+        out = IntervalSet()
+        for this in self.data:
+            # If there's any overlap, add the overlapping region
+            if (this.end > other.start and this.start < other.end):
+                out += this.subset(max(this.start, other.start),
+                                   min(this.end, other.end))
+        return out
+    
+    def _add_intervals(self, iterable):
+        """Add each Interval from an interable to this set"""
+        for element in iter(iterable):
+            self._add_single_interval(element)
+
+    def _add_single_interval(self, interval):
+        """Add one Interval to this set"""
+        if (not isinstance(interval, Interval)):
+            raise TypeError("can only add Intervals")
+        for existing in self.data:
+            if existing.intersects(interval):
+                raise IntervalError("Tried to add overlapping interval "
+                                    "to this set")
+        bisect.insort(self.data, interval)

nilmdb/scripts/__init__.py

@@ -1 +0,0 @@
-# Command line scripts

nilmdb/scripts/nilmdb_server.py

@@ -1,87 +0,0 @@
-#!/usr/bin/python
-
-import nilmdb.server
-import argparse
-import os
-import socket
-
-def main():
-    """Main entry point for the 'nilmdb-server' command line script"""
-
-    parser = argparse.ArgumentParser(
-        description = 'Run the NilmDB server',
-        formatter_class = argparse.ArgumentDefaultsHelpFormatter)
-
-    parser.add_argument("-V", "--version", action="version",
-                        version = nilmdb.__version__)
-
-    group = parser.add_argument_group("Standard options")
-    group.add_argument('-a', '--address',
-                       help = 'Only listen on the given address',
-                       default = '0.0.0.0')
-    group.add_argument('-p', '--port', help = 'Listen on the given port',
-                       type = int, default = 12380)
-    group.add_argument('-d', '--database', help = 'Database directory',
-                       default = os.path.join(os.getcwd(), "db"))
-    group.add_argument('-q', '--quiet', help = 'Silence output',
-                       action = 'store_true')
-    group.add_argument('-t', '--traceback',
-                       help = 'Provide tracebacks in client errors',
-                       action = 'store_true', default = False)
-
-    group = parser.add_argument_group("Debug options")
-    group.add_argument('-y', '--yappi', help = 'Run under yappi profiler and '
-                       'invoke interactive shell afterwards',
-                       action = 'store_true')
-
-    args = parser.parse_args()
-
-    # Create database object.  Needs to be serialized before passing
-    # to the Server.
-    db = nilmdb.utils.serializer_proxy(nilmdb.server.NilmDB)(args.database)
-
-    # Configure the server
-    if args.quiet:
-        embedded = True
-    else:
-        embedded = False
-    server = nilmdb.server.Server(db,
-                                  host = args.address,
-                                  port = args.port,
-                                  embedded = embedded,
-                                  force_traceback = args.traceback)
-
-    # Print info
-    if not args.quiet:
-        print "Version: %s" % nilmdb.__version__
-        print "Database: %s" % (os.path.realpath(args.database))
-        if args.address == '0.0.0.0' or args.address == '::':
-            host = socket.getfqdn()
-        else:
-            host = args.address
-        print "Server URL: http://%s:%d/" % ( host, args.port)
-        print "----"
-
-    # Run it
-    if args.yappi:
-        print "Running in yappi"
-        try:
-            import yappi
-            yappi.start()
-            server.start(blocking = True)
-        finally:
-            yappi.stop()
-            yappi.print_stats(sort_type = yappi.SORTTYPE_TTOT, limit = 50)
-            from IPython import embed
-            embed(header = "Use the yappi object to explore further, "
-                  "quit to exit")
-    else:
-        server.start(blocking = True)
-
-    # Clean up
-    if not args.quiet:
-        print "Closing database"
-        db.close()
-
-if __name__ == "__main__":
-    main()

nilmdb/scripts/nilmtool.py

@@ -1,10 +0,0 @@
-#!/usr/bin/python
-
-import nilmdb.cmdline
-
-def main():
-    """Main entry point for the 'nilmtool' command line script"""
-    nilmdb.cmdline.Cmdline().run()
-
-if __name__ == "__main__":
-    main()

nilmdb/server/__init__.py

@@ -1,21 +0,0 @@
-"""nilmdb.server"""
-
-from __future__ import absolute_import
-
-# Try to set up pyximport to automatically rebuild Cython modules.  If
-# this doesn't work, it's OK, as long as the modules were built externally.
-# (e.g. python setup.py build_ext --inplace)
-try: # pragma: no cover
-    import Cython
-    import distutils.version
-    if (distutils.version.LooseVersion(Cython.__version__) <
-        distutils.version.LooseVersion("0.17")): # pragma: no cover
-        raise ImportError("Cython version too old")
-    import pyximport
-    pyximport.install(inplace = True, build_in_temp = False)
-except (ImportError, TypeError): # pragma: no cover
-    pass
-
-from nilmdb.server.nilmdb import NilmDB
-from nilmdb.server.server import Server
-from nilmdb.server.errors import NilmDBError, StreamError, OverlapError

nilmdb/server/bulkdata.py

@@ -1,577 +0,0 @@
-# Fixed record size bulk data storage
-
-# Need absolute_import so that "import nilmdb" won't pull in
-# nilmdb.py, but will pull the parent nilmdb module instead.
-from __future__ import absolute_import
-from __future__ import division
-from nilmdb.utils.printf import *
-from nilmdb.utils.time import timestamp_to_string as timestamp_to_string
-import nilmdb.utils
-
-import os
-import cPickle as pickle
-import re
-import sys
-import tempfile
-
-from . import rocket
-
-# Up to 256 open file descriptors at any given time.
-# These variables are global so they can be used in the decorator arguments.
-table_cache_size = 16
-fd_cache_size = 16
-
-@nilmdb.utils.must_close(wrap_verify = False)
-class BulkData(object):
-    def __init__(self, basepath, **kwargs):
-        self.basepath = basepath
-        self.root = os.path.join(self.basepath, "data")
-
-        # Tuneables
-        if "file_size" in kwargs:
-            self.file_size = kwargs["file_size"]
-        else:
-            # Default to approximately 128 MiB per file
-            self.file_size = 128 * 1024 * 1024
-
-        if "files_per_dir" in kwargs:
-            self.files_per_dir = kwargs["files_per_dir"]
-        else:
-            # 32768 files per dir should work even on FAT32
-            self.files_per_dir = 32768
-
-        # Make root path
-        if not os.path.isdir(self.root):
-            os.mkdir(self.root)
-
-    def close(self):
-        self.getnode.cache_remove_all()
-
-    def _encode_filename(self, path):
-        # Encode all paths to UTF-8, regardless of sys.getfilesystemencoding(),
-        # because we want to be able to represent all code points and the user
-        # will never be directly exposed to filenames.  We can then do path
-        # manipulations on the UTF-8 directly.
-        if isinstance(path, unicode):
-            return path.encode('utf-8')
-        return path
-
-    def _create_check_ospath(self, ospath):
-        if ospath[-1] == '/':
-            raise ValueError("invalid path; should not end with a /")
-        if Table.exists(ospath):
-            raise ValueError("stream already exists at this path")
-        if os.path.isdir(ospath):
-            raise ValueError("subdirs of this path already exist")
-
-    def _create_parents(self, unicodepath):
-        """Verify the path name, and create parent directories if they
-        don't exist.  Returns a list of elements that got created."""
-        path = self._encode_filename(unicodepath)
-
-        if path[0] != '/':
-            raise ValueError("paths must start with /")
-        [ group, node ] = path.rsplit("/", 1)
-        if group == '':
-            raise ValueError("invalid path; path must contain at least one "
-                             "folder")
-        if node == '':
-            raise ValueError("invalid path; should not end with a /")
-        if not Table.valid_path(path):
-            raise ValueError("path name is invalid or contains reserved words")
-
-        # Create the table's base dir.  Note that we make a
-        # distinction here between NilmDB paths (always Unix style,
-        # split apart manually) and OS paths (built up with
-        # os.path.join)
-
-        # Make directories leading up to this one
-        elements = path.lstrip('/').split('/')
-        made_dirs = []
-        try:
-            # Make parent elements
-            for i in range(len(elements)):
-                ospath = os.path.join(self.root, *elements[0:i])
-                if Table.exists(ospath):
-                    raise ValueError("path is subdir of existing node")
-                if not os.path.isdir(ospath):
-                    os.mkdir(ospath)
-                    made_dirs.append(ospath)
-        except Exception as e:
-            # Try to remove paths that we created; ignore errors
-            exc_info = sys.exc_info()
-            for ospath in reversed(made_dirs): # pragma: no cover (hard to hit)
-                try:
-                    os.rmdir(ospath)
-                except OSError:
-                    pass
-            raise exc_info[1], None, exc_info[2]
-
-        return elements
-
-    def create(self, unicodepath, layout_name):
-        """
-        unicodepath: path to the data (e.g. u'/newton/prep').
-        Paths must contain at least two elements, e.g.:
-           /newton/prep
-           /newton/raw
-           /newton/upstairs/prep
-           /newton/upstairs/raw
-
-        layout_name: string for nilmdb.layout.get_named(), e.g. 'float32_8'
-        """
-        elements = self._create_parents(unicodepath)
-
-        # Make the final dir
-        ospath = os.path.join(self.root, *elements)
-        self._create_check_ospath(ospath)
-        os.mkdir(ospath)
-
-        try:
-            # Write format string to file
-            Table.create(ospath, layout_name, self.file_size,
-                         self.files_per_dir)
-
-            # Open and cache it
-            self.getnode(unicodepath)
-        except:
-            exc_info = sys.exc_info()
-            try:
-                os.rmdir(ospath)
-            except OSError:
-                pass
-            raise exc_info[1], None, exc_info[2]
-
-        # Success
-        return
-
-    def _remove_leaves(self, unicodepath):
-        """Remove empty directories starting at the leaves of unicodepath"""
-        path = self._encode_filename(unicodepath)
-        elements = path.lstrip('/').split('/')
-        for i in reversed(range(len(elements))):
-            ospath = os.path.join(self.root, *elements[0:i+1])
-            try:
-                os.rmdir(ospath)
-            except OSError:
-                pass
-
-    def rename(self, oldunicodepath, newunicodepath):
-        """Move entire tree from 'oldunicodepath' to
-        'newunicodepath'"""
-        oldpath = self._encode_filename(oldunicodepath)
-        newpath = self._encode_filename(newunicodepath)
-
-        # Get OS paths
-        oldelements = oldpath.lstrip('/').split('/')
-        oldospath = os.path.join(self.root, *oldelements)
-        newelements = newpath.lstrip('/').split('/')
-        newospath = os.path.join(self.root, *newelements)
-
-        # Basic checks
-        if oldospath == newospath:
-            raise ValueError("old and new paths are the same")
-        self._create_check_ospath(newospath)
-
-        # Move the table to a temporary location
-        tmpdir = tempfile.mkdtemp(prefix = "rename-", dir = self.root)
-        tmppath = os.path.join(tmpdir, "table")
-        os.rename(oldospath, tmppath)
-
-        try:
-            # Create parent dirs for new location
-            self._create_parents(newunicodepath)
-
-            # Move table into new location
-            os.rename(tmppath, newospath)
-        except Exception:
-            # On failure, move the table back to original path
-            os.rename(tmppath, oldospath)
-            os.rmdir(tmpdir)
-            raise
-
-        # Prune old dirs
-        self._remove_leaves(oldunicodepath)
-        os.rmdir(tmpdir)
-
-    def destroy(self, unicodepath):
-        """Fully remove all data at a particular path.  No way to undo
-        it!  The group/path structure is removed, too."""
-        path = self._encode_filename(unicodepath)
-
-        # Get OS path
-        elements = path.lstrip('/').split('/')
-        ospath = os.path.join(self.root, *elements)
-
-        # Remove Table object from cache
-        self.getnode.cache_remove(self, unicodepath)
-
-        # Remove the contents of the target directory
-        if not Table.exists(ospath):
-            raise ValueError("nothing at that path")
-        for (root, dirs, files) in os.walk(ospath, topdown = False):
-            for name in files:
-                os.remove(os.path.join(root, name))
-            for name in dirs:
-                os.rmdir(os.path.join(root, name))
-
-        # Remove leftover empty directories
-        self._remove_leaves(unicodepath)
-
-    # Cache open tables
-    @nilmdb.utils.lru_cache(size = table_cache_size,
-                            onremove = lambda x: x.close())
-    def getnode(self, unicodepath):
-        """Return a Table object corresponding to the given database
-        path, which must exist."""
-        path = self._encode_filename(unicodepath)
-        elements = path.lstrip('/').split('/')
-        ospath = os.path.join(self.root, *elements)
-        return Table(ospath)
-
-@nilmdb.utils.must_close(wrap_verify = False)
-class Table(object):
-    """Tools to help access a single table (data at a specific OS path)."""
-    # See design.md for design details
-
-    # Class methods, to help keep format details in this class.
-    @classmethod
-    def valid_path(cls, root):
-        """Return True if a root path is a valid name"""
-        return "_format" not in root.split("/")
-
-    @classmethod
-    def exists(cls, root):
-        """Return True if a table appears to exist at this OS path"""
-        return os.path.isfile(os.path.join(root, "_format"))
-
-    @classmethod
-    def create(cls, root, layout, file_size, files_per_dir):
-        """Initialize a table at the given OS path with the
-        given layout string"""
-
-        # Calculate rows per file so that each file is approximately
-        # file_size bytes.
-        rkt = rocket.Rocket(layout, None)
-        rows_per_file = max(file_size // rkt.binary_size, 1)
-        rkt.close()
-
-        fmt = { "rows_per_file": rows_per_file,
-                "files_per_dir": files_per_dir,
-                "layout": layout,
-                "version": 3 }
-        with open(os.path.join(root, "_format"), "wb") as f:
-            pickle.dump(fmt, f, 2)
-
-    # Normal methods
-    def __init__(self, root):
-        """'root' is the full OS path to the directory of this table"""
-        self.root = root
-
-        # Load the format
-        with open(os.path.join(self.root, "_format"), "rb") as f:
-            fmt = pickle.load(f)
-
-        if fmt["version"] != 3: # pragma: no cover
-            # Old versions used floating point timestamps, which aren't
-            # valid anymore.
-            raise NotImplementedError("old version " + str(fmt["version"]) +
-                                      " bulk data store is not supported")
-
-        self.rows_per_file = fmt["rows_per_file"]
-        self.files_per_dir = fmt["files_per_dir"]
-        self.layout = fmt["layout"]
-
-        # Use rocket to get row size and file size
-        rkt = rocket.Rocket(self.layout, None)
-        self.row_size = rkt.binary_size
-        self.file_size = rkt.binary_size * self.rows_per_file
-        rkt.close()
-
-        # Find nrows
-        self.nrows = self._get_nrows()
-
-    def close(self):
-        self.file_open.cache_remove_all()
-
-    # Internal helpers
-    def _get_nrows(self):
-        """Find nrows by locating the lexicographically last filename
-        and using its size"""
-        # Note that this just finds a 'nrows' that is guaranteed to be
-        # greater than the row number of any piece of data that
-        # currently exists, not necessarily all data that _ever_
-        # existed.
-        regex = re.compile("^[0-9a-f]{4,}$")
-
-        # Find the last directory.  We sort and loop through all of them,
-        # starting with the numerically greatest, because the dirs could be
-        # empty if something was deleted.
-        subdirs = sorted(filter(regex.search, os.listdir(self.root)),
-                         key = lambda x: int(x, 16), reverse = True)
-
-        for subdir in subdirs:
-            # Now find the last file in that dir
-            path = os.path.join(self.root, subdir)
-            files = filter(regex.search, os.listdir(path))
-            if not files: # pragma: no cover (shouldn't occur)
-                # Empty dir: try the next one
-                continue
-
-            # Find the numerical max
-            filename = max(files, key = lambda x: int(x, 16))
-            offset = os.path.getsize(os.path.join(self.root, subdir, filename))
-
-            # Convert to row number
-            return self._row_from_offset(subdir, filename, offset)
-
-        # No files, so no data
-        return 0
-
-    def _offset_from_row(self, row):
-        """Return a (subdir, filename, offset, count) tuple:
-
-          subdir: subdirectory for the file
-        filename: the filename that contains the specified row
-          offset: byte offset of the specified row within the file
-           count: number of rows (starting at offset) that fit in the file
-        """
-        filenum = row // self.rows_per_file
-        # It's OK if these format specifiers are too short; the filenames
-        # will just get longer but will still sort correctly.
-        dirname = sprintf("%04x", filenum // self.files_per_dir)
-        filename = sprintf("%04x", filenum % self.files_per_dir)
-        offset = (row % self.rows_per_file) * self.row_size
-        count = self.rows_per_file - (row % self.rows_per_file)
-        return (dirname, filename, offset, count)
-
-    def _row_from_offset(self, subdir, filename, offset):
-        """Return the row number that corresponds to the given
-        'subdir/filename' and byte-offset within that file."""
-        if (offset % self.row_size) != 0: # pragma: no cover
-            # this shouldn't occur, unless there is some corruption somewhere
-            raise ValueError("file offset is not a multiple of data size")
-        filenum = int(subdir, 16) * self.files_per_dir + int(filename, 16)
-        row = (filenum * self.rows_per_file) + (offset // self.row_size)
-        return row
-
-    def _remove_or_truncate_file(self, subdir, filename, offset = 0):
-        """Remove the given file, and remove the subdirectory too
-        if it's empty.  If offset is nonzero, truncate the file
-        to that size instead."""
-        # Close potentially open file in file_open LRU cache
-        self.file_open.cache_remove(self, subdir, filename)
-        if offset:
-            # Truncate it
-            with open(os.path.join(self.root, subdir, filename), "r+b") as f:
-                f.truncate(offset)
-        else:
-            # Remove file
-            os.remove(os.path.join(self.root, subdir, filename))
-            # Try deleting subdir, too
-            try:
-                os.rmdir(os.path.join(self.root, subdir))
-            except:
-                pass
-
-    # Cache open files
-    @nilmdb.utils.lru_cache(size = fd_cache_size,
-                            onremove = lambda f: f.close())
-    def file_open(self, subdir, filename):
-        """Open and map a given 'subdir/filename' (relative to self.root).
-        Will be automatically closed when evicted from the cache."""
-        # Create path if it doesn't exist
-        try:
-            os.mkdir(os.path.join(self.root, subdir))
-        except OSError:
-            pass
-        # Return a rocket.Rocket object, which contains the open file
-        return rocket.Rocket(self.layout,
-                             os.path.join(self.root, subdir, filename))
-
-    def append_string(self, data, start, end):
-        """Parse the formatted string in 'data', according to the
-        current layout, and append it to the table.  If any timestamps
-        are non-monotonic, or don't fall between 'start' and 'end',
-        a ValueError is raised.
-
-        If this function succeeds, it returns normally.  Otherwise,
-        the table is reverted back to its original state by truncating
-        or deleting files as necessary."""
-        data_offset = 0
-        last_timestamp = nilmdb.utils.time.min_timestamp
-        tot_rows = self.nrows
-        count = 0
-        linenum = 0
-        try:
-            while data_offset < len(data):
-                # See how many rows we can fit into the current file,
-                # and open it
-                (subdir, fname, offset, count) = self._offset_from_row(tot_rows)
-                f = self.file_open(subdir, fname)
-
-                # Ask the rocket object to parse and append up to "count"
-                # rows of data, verifying things along the way.
-                try:
-                    (added_rows, data_offset, last_timestamp, linenum
-                     ) = f.append_string(count, data, data_offset, linenum,
-                                         start, end, last_timestamp)
-                except rocket.ParseError as e:
-                    (linenum, colnum, errtype, obj) = e.args
-                    where = "line %d, column %d: " % (linenum, colnum)
-                    # Extract out the error line, add column marker
-                    try:
-                        bad = data.splitlines()[linenum-1]
-                        badptr = ' ' * (colnum - 1) + '^'
-                    except IndexError: # pragma: no cover
-                        bad = ""
-                    if errtype == rocket.ERR_NON_MONOTONIC:
-                        err = "timestamp is not monotonically increasing"
-                    elif errtype == rocket.ERR_OUT_OF_INTERVAL:
-                        if obj < start:
-                            err = sprintf("Data timestamp %s < start time %s",
-                                          timestamp_to_string(obj),
-                                          timestamp_to_string(start))
-                        else:
-                            err = sprintf("Data timestamp %s >= end time %s",
-                                          timestamp_to_string(obj),
-                                          timestamp_to_string(end))
-                    else:
-                        err = str(obj)
-                    raise ValueError("error parsing input data: " +
-                                     where + err + "\n" + bad + "\n" + badptr)
-                tot_rows += added_rows
-        except Exception:
-            # Some failure, so try to roll things back by truncating or
-            # deleting files that we may have appended data to.
-            cleanpos = self.nrows
-            while cleanpos <= tot_rows:
-                (subdir, fname, offset, count) = self._offset_from_row(cleanpos)
-                self._remove_or_truncate_file(subdir, fname, offset)
-                cleanpos += count
-            # Re-raise original exception
-            raise
-        else:
-            # Success, so update self.nrows accordingly
-            self.nrows = tot_rows
-
-    def get_data(self, start, stop):
-        """Extract data corresponding to Python range [n:m],
-        and returns a formatted string"""
-        if (start is None or
-            stop is None or
-            start > stop or
-            start < 0 or
-            stop > self.nrows):
-            raise IndexError("Index out of range")
-
-        ret = []
-        row = start
-        remaining = stop - start
-        while remaining > 0:
-            (subdir, filename, offset, count) = self._offset_from_row(row)
-            if count > remaining:
-                count = remaining
-            f = self.file_open(subdir, filename)
-            ret.append(f.extract_string(offset, count))
-            remaining -= count
-            row += count
-        return "".join(ret)
-
-    def __getitem__(self, row):
-        """Extract timestamps from a row, with table[n] notation."""
-        if row < 0 or row >= self.nrows:
-            raise IndexError("Index out of range")
-        (subdir, filename, offset, count) = self._offset_from_row(row)
-        f = self.file_open(subdir, filename)
-        return f.extract_timestamp(offset)
-
-    def _remove_rows(self, subdir, filename, start, stop):
-        """Helper to mark specific rows as being removed from a
-        file, and potentially remove or truncate the file itself."""
-        # Close potentially open file in file_open LRU cache
-        self.file_open.cache_remove(self, subdir, filename)
-
-        # We keep a file like 0000.removed that contains a list of
-        # which rows have been "removed".  Note that we never have to
-        # remove entries from this list, because we never decrease
-        # self.nrows, and so we will never overwrite those locations in the
-        # file.  Only when the list covers the entire extent of the
-        # file will that file be removed.
-        datafile = os.path.join(self.root, subdir, filename)
-        cachefile = datafile + ".removed"
-        try:
-            with open(cachefile, "rb") as f:
-                ranges = pickle.load(f)
-            cachefile_present = True
-        except:
-            ranges = []
-            cachefile_present = False
-
-        # Append our new range and sort
-        ranges.append((start, stop))
-        ranges.sort()
-
-        # Merge adjacent ranges into "out"
-        merged = []
-        prev = None
-        for new in ranges:
-            if prev is None:
-                # No previous range, so remember this one
-                prev = new
-            elif prev[1] == new[0]:
-                # Previous range connected to this new one; extend prev
-                prev = (prev[0], new[1])
-            else:
-                # Not connected; append previous and start again
-                merged.append(prev)
-                prev = new
-        if prev is not None:
-            merged.append(prev)
-
-        # If the range covered the whole file, we can delete it now.
-        # Note that the last file in a table may be only partially
-        # full (smaller than self.rows_per_file).  We purposely leave
-        # those files around rather than deleting them, because the
-        # remainder will be filled on a subsequent append(), and things
-        # are generally easier if we don't have to special-case that.
-        if (len(merged) == 1 and
-            merged[0][0] == 0 and merged[0][1] == self.rows_per_file):
-            # Delete files
-            if cachefile_present:
-                os.remove(cachefile)
-            self._remove_or_truncate_file(subdir, filename, 0)
-        else:
-            # File needs to stick around.  This means we can get
-            # degenerate cases where we have large files containing as
-            # little as one row.  Try to punch a hole in the file,
-            # so that this region doesn't take up filesystem space.
-            offset = start * self.row_size
-            count = (stop - start) * self.row_size
-            nilmdb.utils.fallocate.punch_hole(datafile, offset, count)
-
-            # Update cache.  Try to do it atomically.
-            nilmdb.utils.atomic.replace_file(cachefile,
-                                             pickle.dumps(merged, 2))
-
-    def remove(self, start, stop):
-        """Remove specified rows [start, stop) from this table.
-
-        If a file is left empty, it is fully removed.  Otherwise, a
-        parallel data file is used to remember which rows have been
-        removed, and the file is otherwise untouched."""
-        if start < 0 or start > stop or stop > self.nrows:
-            raise IndexError("Index out of range")
-
-        row = start
-        remaining = stop - start
-        while remaining:
-            # Loop through each file that we need to touch
-            (subdir, filename, offset, count) = self._offset_from_row(row)
-            if count > remaining:
-                count = remaining
-            row_offset = offset // self.row_size
-            # Mark the rows as being removed
-            self._remove_rows(subdir, filename, row_offset, row_offset + count)
-            remaining -= count
-            row += count

nilmdb/server/errors.py

@@ -1,12 +0,0 @@
-"""Exceptions"""
-
-class NilmDBError(Exception):
-    """Base exception for NilmDB errors"""
-    def __init__(self, message = "Unspecified error"):
-        Exception.__init__(self, message)
-
-class StreamError(NilmDBError):
-    pass
-
-class OverlapError(NilmDBError):
-    pass

nilmdb/server/interval.pyx

@@ -1,388 +0,0 @@
-"""Interval, IntervalSet
-
-Represents an interval of time, and a set of such intervals.
-
-Intervals are half-open, ie. they include data points with timestamps
-[start, end)
-"""
-
-# First implementation kept a sorted list of intervals and used
-# biesct() to optimize some operations, but this was too slow.
-
-# Second version was based on the quicksect implementation from
-# python-bx, modified slightly to handle floating point intervals.
-# This didn't support deletion.
-
-# Third version is more similar to the first version, using a rb-tree
-# instead of a simple sorted list to maintain O(log n) operations.
-
-# Fourth version is an optimized rb-tree that stores interval starts
-# and ends directly in the tree, like bxinterval did.
-
-from ..utils.time import min_timestamp as nilmdb_min_timestamp
-from ..utils.time import max_timestamp as nilmdb_max_timestamp
-from ..utils.time import timestamp_to_string
-from ..utils.iterator import imerge
-import itertools
-
-cimport rbtree
-from libc.stdint cimport uint64_t, int64_t
-
-ctypedef int64_t timestamp_t
-
-class IntervalError(Exception):
-    """Error due to interval overlap, etc"""
-    pass
-
-cdef class Interval:
-    """Represents an interval of time."""
-
-    cdef public timestamp_t start, end
-
-    def __init__(self, timestamp_t start, timestamp_t end):
-        """
-        'start' and 'end' are arbitrary numbers that represent time
-        """
-        if start >= end:
-            # Explicitly disallow zero-width intervals (since they're half-open)
-            raise IntervalError("start %s must precede end %s" % (start, end))
-        self.start = start
-        self.end = end
-
-    def __repr__(self):
-        s = repr(self.start) + ", " + repr(self.end)
-        return self.__class__.__name__ + "(" + s + ")"
-
-    def __str__(self):
-        return ("[" + timestamp_to_string(self.start) +
-                " -> " + timestamp_to_string(self.end) + ")")
-
-    def __cmp__(self, Interval other):
-        """Compare two intervals.  If non-equal, order by start then end"""
-        if not isinstance(other, Interval):
-            raise TypeError("bad type")
-        if self.start == other.start:
-            if self.end < other.end:
-                return -1
-            if self.end > other.end:
-                return 1
-            return 0
-        if self.start < other.start:
-            return -1
-        return 1
-
-    cpdef intersects(self, Interval other):
-        """Return True if two Interval objects intersect"""
-        if (self.end <= other.start or self.start >= other.end):
-            return False
-        return True
-
-    cpdef subset(self, timestamp_t start, timestamp_t end):
-        """Return a new Interval that is a subset of this one"""
-        # A subclass that tracks additional data might override this.
-        if start < self.start or end > self.end:
-            raise IntervalError("not a subset")
-        return Interval(start, end)
-
-cdef class DBInterval(Interval):
-    """
-    Like Interval, but also tracks corresponding start/end times and
-    positions within the database.  These are not currently modified
-    when subsets are taken, but can be used later to help zero in on
-    database positions.
-
-    The actual 'start' and 'end' will always fall within the database
-    start and end, e.g.:
-        db_start = 100, db_startpos = 10000
-        start = 123
-        end = 150
-        db_end = 200, db_endpos = 20000
-    """
-
-    cpdef public timestamp_t db_start, db_end
-    cpdef public uint64_t db_startpos, db_endpos
-
-    def __init__(self, start, end,
-                 db_start, db_end,
-                 db_startpos, db_endpos):
-        """
-        'db_start' and 'db_end' are arbitrary numbers that represent
-        time.  They must be a strict superset of the time interval
-        covered by 'start' and 'end'.  The 'db_startpos' and
-        'db_endpos' are arbitrary database position indicators that
-        correspond to those points.
-        """
-        Interval.__init__(self, start, end)
-        self.db_start = db_start
-        self.db_end = db_end
-        self.db_startpos = db_startpos
-        self.db_endpos = db_endpos
-        if db_start > start or db_end < end:
-            raise IntervalError("database times must span the interval times")
-
-    def __repr__(self):
-        s = repr(self.start) + ", " + repr(self.end)
-        s += ", " + repr(self.db_start) + ", " + repr(self.db_end)
-        s += ", " + repr(self.db_startpos) + ", " + repr(self.db_endpos)
-        return self.__class__.__name__ + "(" + s + ")"
-
-    cpdef subset(self, timestamp_t start, timestamp_t end):
-        """
-        Return a new DBInterval that is a subset of this one
-        """
-        if start < self.start or end > self.end:
-            raise IntervalError("not a subset")
-        return DBInterval(start, end,
-                          self.db_start, self.db_end,
-                          self.db_startpos, self.db_endpos)
-
-cdef class IntervalSet:
-    """
-    A non-intersecting set of intervals.
-    """
-
-    cdef public rbtree.RBTree tree
-
-    def __init__(self, source=None):
-        """
-        'source' is an Interval or IntervalSet to add.
-        """
-        self.tree = rbtree.RBTree()
-        if source is not None:
-            self += source
-
-    def __iter__(self):
-        for node in self.tree:
-            if node.obj:
-                yield node.obj
-
-    def __len__(self):
-        return sum(1 for x in self)
-
-    def __repr__(self):
-        descs = [ repr(x) for x in self ]
-        return self.__class__.__name__ + "([" + ", ".join(descs) + "])"
-
-    def __str__(self):
-        descs = [ str(x) for x in self ]
-        return  "[" + ", ".join(descs) + "]"
-
-    def __match__(self, other):
-        # This isn't particularly efficient, but it shouldn't get used in the
-        # general case.
-        """Test equality of two IntervalSets.
-
-        Treats adjacent Intervals as equivalent to one long interval,
-        so this function really tests whether the IntervalSets cover
-        the same spans of time."""
-        i = 0
-        j = 0
-        outside = True
-
-        def is_adjacent(a, b):
-            """Return True if two Intervals are adjacent (same end or start)"""
-            if a.end == b.start or b.end == a.start:
-                return True
-            else:
-                return False
-
-        this = list(self)
-        that = list(other)
-
-        try:
-            while True:
-                if (outside):
-                    # To match, we need to be finished both sets
-                    if (i >= len(this) and j >= len(that)):
-                        return True
-                    # Or the starts need to match
-                    if (this[i].start != that[j].start):
-                        return False
-                    outside = False
-                else:
-                    # We can move on if the two interval ends match
-                    if (this[i].end == that[j].end):
-                        i += 1
-                        j += 1
-                        outside = True
-                    else:
-                        # Whichever ends first needs to be adjacent to the next
-                        if (this[i].end < that[j].end):
-                            if (not is_adjacent(this[i],this[i+1])):
-                                return False
-                            i += 1
-                        else:
-                            if (not is_adjacent(that[j],that[j+1])):
-                                return False
-                            j += 1
-        except IndexError:
-            return False
-
-    # Use __richcmp__ instead of __eq__, __ne__ for Cython.
-    def __richcmp__(self, other, int op):
-        if op == 2: # ==
-            return self.__match__(other)
-        elif op == 3: # !=
-            return not self.__match__(other)
-        return False
-    #def __eq__(self, other):
-    #    return self.__match__(other)
-    #
-    #def __ne__(self, other):
-    #    return not self.__match__(other)
-
-    def __iadd__(self, object other not None):
-        """Inplace add -- modifies self
-
-        This throws an exception if the regions being added intersect."""
-        if isinstance(other, Interval):
-            if self.intersects(other):
-                raise IntervalError("Tried to add overlapping interval "
-                                    "to this set")
-            self.tree.insert(rbtree.RBNode(other.start, other.end, other))
-        else:
-            for x in other:
-                self.__iadd__(x)
-        return self
-
-    def iadd_nocheck(self, Interval other not None):
-        """Inplace add -- modifies self.
-        'Optimized' version that doesn't check for intersection and
-        only inserts the new interval into the tree."""
-        self.tree.insert(rbtree.RBNode(other.start, other.end, other))
-
-    def __isub__(self, Interval other not None):
-        """Inplace subtract -- modifies self
-
-        Removes an interval from the set.  Must exist exactly
-        as provided -- cannot remove a subset of an existing interval."""
-        i = self.tree.find(other.start, other.end)
-        if i is None:
-            raise IntervalError("interval " + str(other) + " not in tree")
-        self.tree.delete(i)
-        return self
-
-    def __add__(self, other not None):
-        """Add -- returns a new object"""
-        new = IntervalSet(self)
-        new += IntervalSet(other)
-        return new
-
-    def __and__(self, other not None):
-        """
-        Compute a new IntervalSet from the intersection of this
-        IntervalSet with one other interval.
-
-        Output intervals are built as subsets of the intervals in the
-        first argument (self).
-        """
-        out = IntervalSet()
-        for i in self.intersection(other):
-            out.tree.insert(rbtree.RBNode(i.start, i.end, i))
-        return out
-
-    def intersection(self, Interval interval not None, orig = False):
-        """
-        Compute a sequence of intervals that correspond to the
-        intersection between `self` and the provided interval.
-        Returns a generator that yields each of these intervals
-        in turn.
-
-        Output intervals are built as subsets of the intervals in the
-        first argument (self).
-
-        If orig = True, also return the original interval that was
-        (potentially) subsetted to make the one that is being
-        returned.
-        """
-        if not isinstance(interval, Interval):
-            raise TypeError("bad type")
-        for n in self.tree.intersect(interval.start, interval.end):
-            i = n.obj
-            if i:
-                if i.start >= interval.start and i.end <= interval.end:
-                    if orig:
-                        yield (i, i)
-                    else:
-                        yield i
-                else:
-                    subset = i.subset(max(i.start, interval.start),
-                                      min(i.end, interval.end))
-                    if orig:
-                        yield (subset, i)
-                    else:
-                        yield subset
-
-    def set_difference(self, IntervalSet other not None,
-                       Interval bounds = None):
-        """
-        Compute the difference (self \\ other) between this
-        IntervalSet and the given IntervalSet; i.e., the ranges
-        that are present in 'self' but not 'other'.
-
-        If 'bounds' is not None, results are limited to the range
-        specified by the interval 'bounds'.
-
-        Returns a generator that yields each interval in turn.
-        Output intervals are built as subsets of the intervals in the
-        first argument (self).
-        """
-        # Iterate through all starts and ends in sorted order.  Add a
-        # tag to the iterator so that we can figure out which one they
-        # were, after sorting.
-        def decorate(it, key_start, key_end):
-            for i in it:
-                yield i.start, key_start, i
-                yield i.end, key_end, i
-        if bounds is None:
-            bounds = Interval(nilmdb_min_timestamp,
-                              nilmdb_max_timestamp)
-        self_iter = decorate(self.intersection(bounds), 0, 2)
-        other_iter = decorate(other.intersection(bounds), 1, 3)
-
-        # Now iterate over the timestamps of each start and end.
-        # At each point, evaluate which type of end it is, to determine
-        # how to build up the output intervals.
-        self_interval = None
-        other_interval = None
-        out_start = None
-        for (ts, k, i) in imerge(self_iter, other_iter):
-            if k == 0:
-                # start self interval
-                self_interval = i
-                if other_interval is None:
-                    out_start = ts
-            elif k == 1:
-                # start other interval
-                other_interval = i
-                if out_start is not None and out_start != ts:
-                    yield self_interval.subset(out_start, ts)
-                out_start = None
-            elif k == 2:
-                # end self interval
-                if out_start is not None and out_start != ts:
-                    yield self_interval.subset(out_start, ts)
-                out_start = None
-                self_interval = None
-            elif k == 3:
-                # end other interval
-                other_interval = None
-                if self_interval:
-                    out_start = ts
-
-    cpdef intersects(self, Interval other):
-        """Return True if this IntervalSet intersects another interval"""
-        for n in self.tree.intersect(other.start, other.end):
-            if n.obj.intersects(other):
-                return True
-        return False
-
-    def find_end(self, timestamp_t t):
-        """
-        Return an Interval from this tree that ends at time t, or
-        None if it doesn't exist.
-        """
-        n = self.tree.find_left_end(t)
-        if n and n.obj.end == t:
-            return n.obj
-        return None

nilmdb/server/interval.pyxdep

@@ -1 +0,0 @@
-rbtree.pxd

nilmdb/server/layout.pyx

@@ -1,204 +0,0 @@
-# cython: profile=False
-
-import time
-import sys
-import inspect
-import cStringIO
-
-from ..utils.time import min_timestamp as nilmdb_min_timestamp
-
-cdef enum:
-    max_value_count = 64
-
-cimport cython
-cimport libc.stdlib
-cimport libc.stdio
-cimport libc.string
-
-class ParserError(Exception):
-    def __init__(self, line, message):
-        self.message = "line " + str(line) + ": " + message
-        Exception.__init__(self, self.message)
-
-class FormatterError(Exception):
-    pass
-
-class Layout:
-    """Represents a NILM database layout"""
-
-    def __init__(self, typestring):
-        """Initialize this Layout object to handle the specified
-        type string"""
-        try:
-            [ datatype, count ] = typestring.split("_")
-        except:
-            raise KeyError("invalid layout string")
-
-        try:
-            self.count = int(count)
-        except ValueError:
-            raise KeyError("invalid count")
-        if self.count < 1 or self.count > max_value_count:
-            raise KeyError("invalid count")
-
-        if datatype == 'uint16':
-            self.parse = self.parse_uint16
-            self.format_str = "%.6f" + " %d" * self.count
-            self.format = self.format_generic
-        elif datatype == 'float32':
-            self.parse = self.parse_float64
-            self.format_str = "%.6f" + " %.6e" * self.count
-            self.format = self.format_generic
-        elif datatype == 'float64':
-            self.parse = self.parse_float64
-            self.format_str = "%.6f" + " %.16e" * self.count
-            self.format = self.format_generic
-        else:
-            raise KeyError("invalid type")
-
-        self.datatype = datatype
-
-    # Parsers
-    def parse_float64(self, char *text):
-        cdef int n
-        cdef double ts
-        # Return doubles even in float32 case, since they're going into
-        # a Python array which would upconvert to double anyway.
-        result = [0] * (self.count + 1)
-        cdef char *end
-        ts = libc.stdlib.strtod(text, &end)
-        if end == text:
-            raise ValueError("bad timestamp")
-        result[0] = ts
-        for n in range(self.count):
-            text = end
-            result[n+1] = libc.stdlib.strtod(text, &end)
-            if end == text:
-                raise ValueError("wrong number of values")
-        n = 0
-        while end[n] == ' ':
-            n += 1
-        if end[n] != '\n' and end[n] != '#' and end[n] != '\0':
-            raise ValueError("extra data on line")
-        return (ts, result)
-
-    def parse_uint16(self, char *text):
-        cdef int n
-        cdef double ts
-        cdef int v
-        cdef char *end
-        result = [0] * (self.count + 1)
-        ts = libc.stdlib.strtod(text, &end)
-        if end == text:
-            raise ValueError("bad timestamp")
-        result[0] = ts
-        for n in range(self.count):
-            text = end
-            v = libc.stdlib.strtol(text, &end, 10)
-            if v < 0 or v > 65535:
-                raise ValueError("value out of range")
-            result[n+1] = v
-            if end == text:
-                raise ValueError("wrong number of values")
-        n = 0
-        while end[n] == ' ':
-            n += 1
-        if end[n] != '\n' and end[n] != '#' and end[n] != '\0':
-            raise ValueError("extra data on line")
-        return (ts, result)
-
-    # Formatters
-    def format_generic(self, d):
-        n = len(d) - 1
-        if n != self.count:
-            raise ValueError("wrong number of values for layout type: "
-                             "got %d, wanted %d" % (n, self.count))
-        return (self.format_str % tuple(d)) + "\n"
-
-# Get a layout by name
-def get_named(typestring):
-    try:
-        return Layout(typestring)
-    except KeyError:
-        compat = { "PrepData": "float32_8",
-                   "RawData": "uint16_6",
-                   "RawNotchedData": "uint16_9" }
-        return Layout(compat[typestring])
-
-class Parser(object):
-    """Object that parses and stores ASCII data for inclusion into the
-    database"""
-
-    def __init__(self, layout):
-        if issubclass(layout.__class__, Layout):
-            self.layout = layout
-        else:
-            try:
-                self.layout = get_named(layout)
-            except KeyError:
-                raise TypeError("unknown layout")
-
-        self.data = []
-        self.min_timestamp = None
-        self.max_timestamp = None
-
-    def parse(self, textdata):
-        """
-        Parse the data, provided as lines of text, using the current
-        layout, into an internal data structure suitable for a
-        pytables 'table.append(parser.data)'.
-        """
-        cdef double last_ts = nilmdb_min_timestamp
-        cdef double ts
-        cdef int n = 0, i
-        cdef char *line
-
-        indata = cStringIO.StringIO(textdata)
-        # Assume any parsing error is a real error.
-        # In the future we might want to skip completely empty lines,
-        # or partial lines right before EOF?
-        try:
-            self.data = []
-            for pyline in indata:
-                line = pyline
-                n += 1
-                if line[0] == '\#':
-                    continue
-                (ts, row) = self.layout.parse(line)
-                if ts <= last_ts:
-                    raise ValueError("timestamp is not "
-                                     "monotonically increasing")
-                last_ts = ts
-                self.data.append(row)
-        except (ValueError, IndexError, TypeError) as e:
-            raise ParserError(n, "error: " + e.message)
-
-        # Mark timestamp ranges
-        if len(self.data):
-            self.min_timestamp = self.data[0][0]
-            self.max_timestamp = self.data[-1][0]
-
-class Formatter(object):
-    """Object that formats database data into ASCII"""
-
-    def __init__(self, layout):
-        if issubclass(layout.__class__, Layout):
-            self.layout = layout
-        else:
-            try:
-                self.layout = get_named(layout)
-            except KeyError:
-                raise TypeError("unknown layout")
-
-    def format(self, data):
-        """
-        Format raw data from the database, using the current layout,
-        as lines of ACSII text.
-        """
-        text = cStringIO.StringIO()
-        try:
-            for row in data:
-                text.write(self.layout.format(row))
-        except (ValueError, IndexError, TypeError) as e:
-            raise FormatterError("formatting error: " + e.message)
-        return text.getvalue()

nilmdb/server/nilmdb.py

@@ -1,612 +0,0 @@
-# -*- coding: utf-8 -*-
-
-"""NilmDB
-
-Object that represents a NILM database file.
-
-Manages both the SQL database and the table storage backend.
-"""
-
-# Need absolute_import so that "import nilmdb" won't pull in
-# nilmdb.py, but will pull the parent nilmdb module instead.
-from __future__ import absolute_import
-import nilmdb.utils
-from nilmdb.utils.printf import *
-from nilmdb.server.interval import (Interval, DBInterval,
-                                    IntervalSet, IntervalError)
-from nilmdb.server import bulkdata
-from nilmdb.server.errors import NilmDBError, StreamError, OverlapError
-
-import sqlite3
-import os
-import errno
-import bisect
-
-# Note about performance and transactions:
-#
-# Committing a transaction in the default sync mode (PRAGMA synchronous=FULL)
-# takes about 125msec.  sqlite3 will commit transactions at 3 times:
-# 1: explicit con.commit()
-# 2: between a series of DML commands and non-DML commands, e.g.
-#    after a series of INSERT, SELECT, but before a CREATE TABLE or PRAGMA.
-# 3: at the end of an explicit transaction, e.g. "with self.con as con:"
-#
-# To speed things up, we can set 'PRAGMA synchronous=OFF'.  Or, it
-# seems that 'PRAGMA synchronous=NORMAL' and 'PRAGMA journal_mode=WAL'
-# give an equivalent speedup more safely.  That is what is used here.
-_sql_schema_updates = {
-    0: { "next": 1, "sql": """
-    -- All streams
-    CREATE TABLE streams(
-        id INTEGER PRIMARY KEY,		-- stream ID
-        path TEXT UNIQUE NOT NULL,	-- path, e.g. '/newton/prep'
-        layout TEXT NOT NULL		-- layout name, e.g. float32_8
-    );
-
-    -- Individual timestamped ranges in those streams.
-    -- For a given start_time and end_time, this tells us that the
-    -- data is stored between start_pos and end_pos.
-    -- Times are stored as μs since Unix epoch
-    -- Positions are opaque: PyTables rows, file offsets, etc.
-    --
-    -- Note: end_pos points to the row _after_ end_time, so end_pos-1
-    -- is the last valid row.
-    CREATE TABLE ranges(
-        stream_id INTEGER NOT NULL,
-        start_time INTEGER NOT NULL,
-        end_time INTEGER NOT NULL,
-        start_pos INTEGER NOT NULL,
-        end_pos INTEGER NOT NULL
-    );
-    CREATE INDEX _ranges_index ON ranges (stream_id, start_time, end_time);
-    """ },
-
-    1: { "next": 3, "sql": """
-    -- Generic dictionary-type metadata that can be associated with a stream
-    CREATE TABLE metadata(
-    	stream_id INTEGER NOT NULL,
-        key TEXT NOT NULL,
-        value TEXT
-    );
-    """ },
-
-    2: { "error": "old format with floating-point timestamps requires "
-         "nilmdb 1.3.1 or older" },
-
-    3: { "next": None },
-}
-
-@nilmdb.utils.must_close()
-class NilmDB(object):
-    verbose = 0
-
-    def __init__(self, basepath, max_results=None,
-                 bulkdata_args=None):
-        if bulkdata_args is None:
-            bulkdata_args = {}
-
-        # set up path
-        self.basepath = os.path.abspath(basepath)
-
-        # Create the database path if it doesn't exist
-        try:
-            os.makedirs(self.basepath)
-        except OSError as e:
-            if e.errno != errno.EEXIST:
-                raise IOError("can't create tree " + self.basepath)
-
-        # Our data goes inside it
-        self.data = bulkdata.BulkData(self.basepath, **bulkdata_args)
-
-        # SQLite database too
-        sqlfilename = os.path.join(self.basepath, "data.sql")
-        self.con = sqlite3.connect(sqlfilename, check_same_thread = True)
-        try:
-            self._sql_schema_update()
-        finally: # pragma: no cover
-            self.data.close()
-
-        # See big comment at top about the performance implications of this
-        self.con.execute("PRAGMA synchronous=NORMAL")
-        self.con.execute("PRAGMA journal_mode=WAL")
-
-        # Approximate largest number of elements that we want to send
-        # in a single reply (for stream_intervals, stream_extract)
-        if max_results:
-            self.max_results = max_results
-        else:
-            self.max_results = 16384
-
-    def get_basepath(self):
-        return self.basepath
-
-    def close(self):
-        if self.con:
-            self.con.commit()
-            self.con.close()
-        self.data.close()
-
-    def _sql_schema_update(self):
-        cur = self.con.cursor()
-        version = cur.execute("PRAGMA user_version").fetchone()[0]
-        oldversion = version
-
-        while True:
-            if version not in _sql_schema_updates: # pragma: no cover
-                raise Exception(self.basepath + ": unknown database version "
-                                + str(version))
-            update = _sql_schema_updates[version]
-            if "error" in update: # pragma: no cover
-                raise Exception(self.basepath + ": can't use database version "
-                                + str(version) + ": " + update["error"])
-            if update["next"] is None:
-                break
-            cur.executescript(update["sql"])
-            version = update["next"]
-            if self.verbose: # pragma: no cover
-                printf("Database schema updated to %d\n", version)
-
-        if version != oldversion:
-            with self.con:
-                cur.execute("PRAGMA user_version = {v:d}".format(v=version))
-
-    def _check_user_times(self, start, end):
-        if start is None:
-            start = nilmdb.utils.time.min_timestamp
-        if end is None:
-            end = nilmdb.utils.time.max_timestamp
-        if start >= end:
-            raise NilmDBError("start must precede end")
-        return (start, end)
-
-    @nilmdb.utils.lru_cache(size = 16)
-    def _get_intervals(self, stream_id):
-        """
-        Return a mutable IntervalSet corresponding to the given stream ID.
-        """
-        iset = IntervalSet()
-        result = self.con.execute("SELECT start_time, end_time, "
-                                  "start_pos, end_pos "
-                                  "FROM ranges "
-                                  "WHERE stream_id=?", (stream_id,))
-        try:
-            for (start_time, end_time, start_pos, end_pos) in result:
-                iset += DBInterval(start_time, end_time,
-                                   start_time, end_time,
-                                   start_pos, end_pos)
-        except IntervalError: # pragma: no cover
-            raise NilmDBError("unexpected overlap in ranges table!")
-
-        return iset
-
-    def _sql_interval_insert(self, id, start, end, start_pos, end_pos):
-        """Helper that adds interval to the SQL database only"""
-        self.con.execute("INSERT INTO ranges "
-                         "(stream_id,start_time,end_time,start_pos,end_pos) "
-                         "VALUES (?,?,?,?,?)",
-                         (id, start, end, start_pos, end_pos))
-
-    def _sql_interval_delete(self, id, start, end, start_pos, end_pos):
-        """Helper that removes interval from the SQL database only"""
-        self.con.execute("DELETE FROM ranges WHERE "
-                         "stream_id=? AND start_time=? AND "
-                         "end_time=? AND start_pos=? AND end_pos=?",
-                         (id, start, end, start_pos, end_pos))
-
-    def _add_interval(self, stream_id, interval, start_pos, end_pos):
-        """
-        Add interval to the internal interval cache, and to the database.
-        Note: arguments must be ints (not numpy.int64, etc)
-        """
-        # Load this stream's intervals
-        iset = self._get_intervals(stream_id)
-
-        # Check for overlap
-        if iset.intersects(interval): # pragma: no cover (gets caught earlier)
-            raise NilmDBError("new interval overlaps existing data")
-
-        # Check for adjacency.  If there's a stream in the database
-        # that ends exactly when this one starts, and the database
-        # rows match up, we can make one interval that covers the
-        # time range [adjacent.start -> interval.end)
-        # and database rows [ adjacent.start_pos -> end_pos ].
-        # Only do this if the resulting interval isn't too large.
-        max_merged_rows = 8000 * 60 * 60 * 1.05 # 1.05 hours at 8 KHz
-        adjacent = iset.find_end(interval.start)
-        if (adjacent is not None and
-            start_pos == adjacent.db_endpos and
-            (end_pos - adjacent.db_startpos) < max_merged_rows):
-            # First delete the old one, both from our iset and the
-            # database
-            iset -= adjacent
-            self._sql_interval_delete(stream_id,
-                                      adjacent.db_start, adjacent.db_end,
-                                      adjacent.db_startpos, adjacent.db_endpos)
-
-            # Now update our interval so the fallthrough add is
-            # correct.
-            interval.start = adjacent.start
-            start_pos = adjacent.db_startpos
-
-        # Add the new interval to the iset
-        iset.iadd_nocheck(DBInterval(interval.start, interval.end,
-                                     interval.start, interval.end,
-                                     start_pos, end_pos))
-
-        # Insert into the database
-        self._sql_interval_insert(stream_id, interval.start, interval.end,
-                                  int(start_pos), int(end_pos))
-
-        self.con.commit()
-
-    def _remove_interval(self, stream_id, original, remove):
-        """
-        Remove an interval from the internal cache and the database.
-
-        stream_id: id of stream
-         original: original DBInterval; must be already present in DB
-        to_remove: DBInterval to remove; must be subset of 'original'
-        """
-        # Just return if we have nothing to remove
-        if remove.start == remove.end: # pragma: no cover
-            return
-
-        # Load this stream's intervals
-        iset = self._get_intervals(stream_id)
-
-        # Remove existing interval from the cached set and the database
-        iset -= original
-        self._sql_interval_delete(stream_id,
-                                  original.db_start, original.db_end,
-                                  original.db_startpos, original.db_endpos)
-
-        # Add back the intervals that would be left over if the
-        # requested interval is removed.  There may be two of them, if
-        # the removed piece was in the middle.
-        def add(iset, start, end, start_pos, end_pos):
-            iset += DBInterval(start, end, start, end, start_pos, end_pos)
-            self._sql_interval_insert(stream_id, start, end, start_pos, end_pos)
-
-        if original.start != remove.start:
-            # Interval before the removed region
-            add(iset, original.start, remove.start,
-                original.db_startpos, remove.db_startpos)
-
-        if original.end != remove.end:
-            # Interval after the removed region
-            add(iset, remove.end, original.end,
-                remove.db_endpos, original.db_endpos)
-
-        # Commit SQL changes
-        self.con.commit()
-
-        return
-
-    def stream_list(self, path = None, layout = None, extended = False):
-        """Return list of lists of all streams in the database.
-
-        If path is specified, include only streams with a path that
-        matches the given string.
-
-        If layout is specified, include only streams with a layout
-        that matches the given string.
-
-        If extended = False, returns a list of lists containing
-        the path and layout: [ path, layout ]
-
-        If extended = True, returns a list of lists containing
-        more information:
-           path
-           layout
-           interval_min (earliest interval start)
-           interval_max (latest interval end)
-           rows         (total number of rows of data)
-           time         (total time covered by this stream, in timestamp units)
-        """
-        params = ()
-        query = "SELECT streams.path, streams.layout"
-        if extended:
-            query += ", min(ranges.start_time), max(ranges.end_time) "
-            query += ", coalesce(sum(ranges.end_pos - ranges.start_pos), 0) "
-            query += ", coalesce(sum(ranges.end_time - ranges.start_time), 0) "
-        query += " FROM streams"
-        if extended:
-            query += " LEFT JOIN ranges ON streams.id = ranges.stream_id"
-        query += " WHERE 1=1"
-        if layout is not None:
-            query += " AND streams.layout=?"
-            params += (layout,)
-        if path is not None:
-            query += " AND streams.path=?"
-            params += (path,)
-        query += " GROUP BY streams.id ORDER BY streams.path"
-        result = self.con.execute(query, params).fetchall()
-        return [ list(x) for x in result ]
-
-    def stream_intervals(self, path, start = None, end = None, diffpath = None):
-        """
-        List all intervals in 'path' between 'start' and 'end'.  If
-        'diffpath' is not none, list instead the set-difference
-        between the intervals in the two streams; i.e. all interval
-        ranges that are present in 'path' but not 'path2'.
-
-        Returns (intervals, restart) tuple.
-
-        intervals is a list of [start,end] timestamps of all intervals
-        that exist for path, between start and end.
-
-        restart, if nonzero, means that there were too many results to
-        return in a single request.  The data is complete from the
-        starting timestamp to the point at which it was truncated,
-        and a new request with a start time of 'restart' will fetch
-        the next block of data.
-        """
-        stream_id = self._stream_id(path)
-        intervals = self._get_intervals(stream_id)
-        if diffpath:
-            diffstream_id = self._stream_id(diffpath)
-            diffintervals = self._get_intervals(diffstream_id)
-        (start, end) = self._check_user_times(start, end)
-        requested = Interval(start, end)
-        result = []
-        if diffpath:
-            getter = intervals.set_difference(diffintervals, requested)
-        else:
-            getter = intervals.intersection(requested)
-        for n, i in enumerate(getter):
-            if n >= self.max_results:
-                restart = i.start
-                break
-            result.append([i.start, i.end])
-        else:
-            restart = 0
-        return (result, restart)
-
-    def stream_create(self, path, layout_name):
-        """Create a new table in the database.
-
-        path: path to the data (e.g. '/newton/prep').
-        Paths must contain at least two elements, e.g.:
-           /newton/prep
-           /newton/raw
-           /newton/upstairs/prep
-           /newton/upstairs/raw
-
-        layout_name: string for nilmdb.layout.get_named(), e.g. 'float32_8'
-        """
-        # Create the bulk storage.  Raises ValueError on error, which we
-        # pass along.
-        self.data.create(path, layout_name)
-
-        # Insert into SQL database once the bulk storage is happy
-        with self.con as con:
-            con.execute("INSERT INTO streams (path, layout) VALUES (?,?)",
-                        (path, layout_name))
-
-    def _stream_id(self, path):
-        """Return unique stream ID"""
-        result = self.con.execute("SELECT id FROM streams WHERE path=?",
-                                  (path,)).fetchone()
-        if result is None:
-            raise StreamError("No stream at path " + path)
-        return result[0]
-
-    def stream_set_metadata(self, path, data):
-        """Set stream metadata from a dictionary, e.g.
-           { description = 'Downstairs lighting',
-             v_scaling = 123.45 }
-           This replaces all existing metadata.
-           """
-        stream_id = self._stream_id(path)
-        with self.con as con:
-            con.execute("DELETE FROM metadata WHERE stream_id=?", (stream_id,))
-            for key in data:
-                if data[key] != '':
-                    con.execute("INSERT INTO metadata VALUES (?, ?, ?)",
-                                (stream_id, key, data[key]))
-
-    def stream_get_metadata(self, path):
-        """Return stream metadata as a dictionary."""
-        stream_id = self._stream_id(path)
-        result = self.con.execute("SELECT metadata.key, metadata.value "
-                                  "FROM metadata "
-                                  "WHERE metadata.stream_id=?", (stream_id,))
-        data = {}
-        for (key, value) in result:
-            data[key] = value
-        return data
-
-    def stream_update_metadata(self, path, newdata):
-        """Update stream metadata from a dictionary"""
-        data = self.stream_get_metadata(path)
-        data.update(newdata)
-        self.stream_set_metadata(path, data)
-
-    def stream_rename(self, oldpath, newpath):
-        """Rename a stream."""
-        stream_id = self._stream_id(oldpath)
-
-        # Rename the data
-        self.data.rename(oldpath, newpath)
-
-        # Rename the stream in the database
-        with self.con as con:
-            con.execute("UPDATE streams SET path=? WHERE id=?",
-                        (newpath, stream_id))
-
-    def stream_destroy(self, path):
-        """Fully remove a table and all of its data from the database.
-        No way to undo it!  Metadata is removed."""
-        stream_id = self._stream_id(path)
-
-        # Delete the cached interval data (if it was cached)
-        self._get_intervals.cache_remove(self, stream_id)
-
-        # Delete the data
-        self.data.destroy(path)
-
-        # Delete metadata, stream, intervals
-        with self.con as con:
-            con.execute("DELETE FROM metadata WHERE stream_id=?", (stream_id,))
-            con.execute("DELETE FROM ranges WHERE stream_id=?", (stream_id,))
-            con.execute("DELETE FROM streams WHERE id=?", (stream_id,))
-
-    def stream_insert(self, path, start, end, data):
-        """Insert new data into the database.
-           path: Path at which to add the data
-           start: Starting timestamp
-           end: Ending timestamp
-           data: Textual data, formatted according to the layout of path
-           """
-        # First check for basic overlap using timestamp info given.
-        stream_id = self._stream_id(path)
-        iset = self._get_intervals(stream_id)
-        interval = Interval(start, end)
-        if iset.intersects(interval):
-            raise OverlapError("new data overlaps existing data at range: "
-                               + str(iset & interval))
-
-        # Tenatively append the data.  This will raise a ValueError if
-        # there are any parse errors.
-        table = self.data.getnode(path)
-        row_start = table.nrows
-        table.append_string(data, start, end)
-        row_end = table.nrows
-
-        # Insert the record into the sql database.
-        self._add_interval(stream_id, interval, row_start, row_end)
-
-        # And that's all
-        return
-
-    def _find_start(self, table, dbinterval):
-        """
-        Given a DBInterval, find the row in the database that
-        corresponds to the start time.  Return the first database
-        position with a timestamp (first element) greater than or
-        equal to 'start'.
-        """
-        # Optimization for the common case where an interval wasn't truncated
-        if dbinterval.start == dbinterval.db_start:
-            return dbinterval.db_startpos
-        return bisect.bisect_left(table,
-                                  dbinterval.start,
-                                  dbinterval.db_startpos,
-                                  dbinterval.db_endpos)
-
-    def _find_end(self, table, dbinterval):
-        """
-        Given a DBInterval, find the row in the database that follows
-        the end time.  Return the first database position after the
-        row with timestamp (first element) greater than or equal
-        to 'end'.
-        """
-        # Optimization for the common case where an interval wasn't truncated
-        if dbinterval.end == dbinterval.db_end:
-            return dbinterval.db_endpos
-        # Note that we still use bisect_left here, because we don't
-        # want to include the given timestamp in the results.  This is
-        # so a queries like 1:00 -> 2:00 and 2:00 -> 3:00 return
-        # non-overlapping data.
-        return bisect.bisect_left(table,
-                                  dbinterval.end,
-                                  dbinterval.db_startpos,
-                                  dbinterval.db_endpos)
-
-    def stream_extract(self, path, start = None, end = None, count = False):
-        """
-        Returns (data, restart) tuple.
-
-        data is ASCII-formatted data from the database, formatted
-        according to the layout of the stream.
-
-        restart, if nonzero, means that there were too many results to
-        return in a single request.  The data is complete from the
-        starting timestamp to the point at which it was truncated,
-        and a new request with a start time of 'restart' will fetch
-        the next block of data.
-
-        count, if true, means to not return raw data, but just the count
-        of rows that would have been returned.  This is much faster
-        than actually fetching the data.  It is not limited by
-        max_results.
-        """
-        stream_id = self._stream_id(path)
-        table = self.data.getnode(path)
-        intervals = self._get_intervals(stream_id)
-        (start, end) = self._check_user_times(start, end)
-        requested = Interval(start, end)
-        result = []
-        matched = 0
-        remaining = self.max_results
-        restart = 0
-        for interval in intervals.intersection(requested):
-            # Reading single rows from the table is too slow, so
-            # we use two bisections to find both the starting and
-            # ending row for this particular interval, then
-            # read the entire range as one slice.
-            row_start = self._find_start(table, interval)
-            row_end = self._find_end(table, interval)
-
-            if count:
-                matched += row_end - row_start
-                continue
-
-            # Shorten it if we'll hit the maximum number of results
-            row_max = row_start + remaining
-            if row_max < row_end:
-                row_end = row_max
-                restart = table[row_max]
-
-            # Gather these results up
-            result.append(table.get_data(row_start, row_end))
-
-            # Count them
-            remaining -= row_end - row_start
-
-            if restart:
-                break
-
-        if count:
-            return matched
-        return ("".join(result), restart)
-
-    def stream_remove(self, path, start = None, end = None):
-        """
-        Remove data from the specified time interval within a stream.
-        Removes all data in the interval [start, end), and intervals
-        are truncated or split appropriately.  Returns the number of
-        data points removed.
-        """
-        stream_id = self._stream_id(path)
-        table = self.data.getnode(path)
-        intervals = self._get_intervals(stream_id)
-        (start, end) = self._check_user_times(start, end)
-        to_remove = Interval(start, end)
-        removed = 0
-
-        # Can't remove intervals from within the iterator, so we need to
-        # remember what's currently in the intersection now.
-        all_candidates = list(intervals.intersection(to_remove, orig = True))
-
-        for (dbint, orig) in all_candidates:
-            # Find row start and end
-            row_start = self._find_start(table, dbint)
-            row_end = self._find_end(table, dbint)
-
-            # Adjust the DBInterval to match the newly found ends
-            dbint.db_start = dbint.start
-            dbint.db_end = dbint.end
-            dbint.db_startpos = row_start
-            dbint.db_endpos = row_end
-
-            # Remove interval from the database
-            self._remove_interval(stream_id, orig, dbint)
-
-            # Remove data from the underlying table storage
-            table.remove(row_start, row_end)
-
-            # Count how many were removed
-            removed += row_end - row_start
-
-        return removed

nilmdb/server/rbtree.pxd

@@ -1,23 +0,0 @@
-cdef class RBNode:
-    cdef public object obj
-    cdef public double start, end
-    cdef public int red
-    cdef public RBNode left, right, parent
-
-cdef class RBTree:
-    cdef public RBNode nil, root
-
-    cpdef getroot(RBTree self)
-    cdef void __rotate_left(RBTree self, RBNode x)
-    cdef void __rotate_right(RBTree self, RBNode y)
-    cdef RBNode __successor(RBTree self, RBNode x)
-    cpdef RBNode successor(RBTree self, RBNode x)
-    cdef RBNode __predecessor(RBTree self, RBNode x)
-    cpdef RBNode predecessor(RBTree self, RBNode x)
-    cpdef insert(RBTree self, RBNode z)
-    cdef void __insert_fixup(RBTree self, RBNode x)
-    cpdef delete(RBTree self, RBNode z)
-    cdef inline void __delete_fixup(RBTree self, RBNode x)
-    cpdef RBNode find(RBTree self, double start, double end)
-    cpdef RBNode find_left_end(RBTree self, double t)
-    cpdef RBNode find_right_start(RBTree self, double t)

nilmdb/server/rbtree.pyx

@@ -1,377 +0,0 @@
-# cython: profile=False
-# cython: cdivision=True
-
-"""
-Jim Paris <jim@jtan.com>
-
-Red-black tree, where keys are stored as start/end timestamps.
-This is a basic interval tree that holds half-open intervals:
-  [start, end)
-Intervals must not overlap.  Fixing that would involve making this
-into an augmented interval tree as described in CLRS 14.3.
-
-Code that assumes non-overlapping intervals is marked with the
-string 'non-overlapping'.
-"""
-
-import sys
-cimport rbtree
-
-cdef class RBNode:
-    """One node of the Red/Black tree, containing a key (start, end)
-    and value (obj)"""
-    def __init__(self, double start, double end, object obj = None):
-        self.obj = obj
-        self.start = start
-        self.end = end
-        self.red = False
-        self.left = None
-        self.right = None
-
-    def __str__(self):
-        if self.red:
-            color = "R"
-        else:
-            color = "B"
-        if self.start == sys.float_info.min:
-            return "[node nil]"
-        return ("[node ("
-                + str(self.obj) + ") "
-                + str(self.start) + " -> " + str(self.end) + " "
-                + color + "]")
-
-cdef class RBTree:
-    """Red/Black tree"""
-
-    # Init
-    def __init__(self):
-        self.nil = RBNode(start = sys.float_info.min,
-                          end = sys.float_info.min)
-        self.nil.left = self.nil
-        self.nil.right = self.nil
-        self.nil.parent = self.nil
-
-        self.root = RBNode(start = sys.float_info.max,
-                           end = sys.float_info.max)
-        self.root.left = self.nil
-        self.root.right = self.nil
-        self.root.parent = self.nil
-
-    # We have a dummy root node to simplify operations, so from an
-    # external point of view, its left child is the real root.
-    cpdef getroot(self):
-        return self.root.left
-
-    # Rotations and basic operations
-    cdef void __rotate_left(self, RBNode x):
-        """Rotate left:
-        #   x           y
-        #  / \   -->   / \
-        # z   y       x   w
-        #    / \     / \
-        #   v   w   z   v
-        """
-        cdef RBNode y = x.right
-        x.right = y.left
-        if y.left is not self.nil:
-            y.left.parent = x
-        y.parent = x.parent
-        if x is x.parent.left:
-            x.parent.left = y
-        else:
-            x.parent.right = y
-        y.left = x
-        x.parent = y
-
-    cdef void __rotate_right(self, RBNode y):
-        """Rotate right:
-        #     y           x
-        #    / \   -->   / \
-        #   x   w       z   y
-        #  / \             / \
-        # z   v           v   w
-        """
-        cdef RBNode x = y.left
-        y.left = x.right
-        if x.right is not self.nil:
-            x.right.parent = y
-        x.parent = y.parent
-        if y is y.parent.left:
-            y.parent.left = x
-        else:
-            y.parent.right = x
-        x.right = y
-        y.parent = x
-
-    cdef RBNode __successor(self, RBNode x):
-        """Returns the successor of RBNode x"""
-        cdef RBNode y = x.right
-        if y is not self.nil:
-            while y.left is not self.nil:
-                y = y.left
-        else:
-            y = x.parent
-            while x is y.right:
-                x = y
-                y = y.parent
-            if y is self.root:
-                return self.nil
-        return y
-    cpdef RBNode successor(self, RBNode x):
-        """Returns the successor of RBNode x, or None"""
-        cdef RBNode y = self.__successor(x)
-        return y if y is not self.nil else None
-
-    cdef RBNode __predecessor(self, RBNode x):
-        """Returns the predecessor of RBNode x"""
-        cdef RBNode y = x.left
-        if y is not self.nil:
-            while y.right is not self.nil:
-                y = y.right
-        else:
-            y = x.parent
-            while x is y.left:
-                if y is self.root:
-                    y = self.nil
-                    break
-                x = y
-                y = y.parent
-        return y
-    cpdef RBNode predecessor(self, RBNode x):
-        """Returns the predecessor of RBNode x, or None"""
-        cdef RBNode y = self.__predecessor(x)
-        return y if y is not self.nil else None
-
-    # Insertion
-    cpdef insert(self, RBNode z):
-        """Insert RBNode z into RBTree and rebalance as necessary"""
-        z.left = self.nil
-        z.right = self.nil
-        cdef RBNode y = self.root
-        cdef RBNode x = self.root.left
-        while x is not self.nil:
-            y = x
-            if (x.start > z.start or (x.start == z.start and x.end > z.end)):
-                x = x.left
-            else:
-                x = x.right
-        z.parent = y
-        if (y is self.root or
-            (y.start > z.start or (y.start == z.start and y.end > z.end))):
-            y.left = z
-        else:
-            y.right = z
-        # relabel/rebalance
-        self.__insert_fixup(z)
-
-    cdef void __insert_fixup(self, RBNode x):
-        """Rebalance/fix RBTree after a simple insertion of RBNode x"""
-        x.red = True
-        while x.parent.red:
-            if x.parent is x.parent.parent.left:
-                y = x.parent.parent.right
-                if y.red:
-                    x.parent.red = False
-                    y.red = False
-                    x.parent.parent.red = True
-                    x = x.parent.parent
-                else:
-                    if x is x.parent.right:
-                        x = x.parent
-                        self.__rotate_left(x)
-                    x.parent.red = False
-                    x.parent.parent.red = True
-                    self.__rotate_right(x.parent.parent)
-            else: # same as above, left/right switched
-                y = x.parent.parent.left
-                if y.red:
-                    x.parent.red = False
-                    y.red = False
-                    x.parent.parent.red = True
-                    x = x.parent.parent
-                else:
-                    if x is x.parent.left:
-                        x = x.parent
-                        self.__rotate_right(x)
-                    x.parent.red = False
-                    x.parent.parent.red = True
-                    self.__rotate_left(x.parent.parent)
-        self.root.left.red = False
-
-    # Deletion
-    cpdef delete(self, RBNode z):
-        if z.left is None or z.right is None:
-            raise AttributeError("you can only delete a node object "
-                                 + "from the tree; use find() to get one")
-        cdef RBNode x, y
-        if z.left is self.nil or z.right is self.nil:
-            y = z
-        else:
-            y = self.__successor(z)
-        if y.left is self.nil:
-            x = y.right
-        else:
-            x = y.left
-        x.parent = y.parent
-        if x.parent is self.root:
-            self.root.left = x
-        else:
-            if y is y.parent.left:
-                y.parent.left = x
-            else:
-                y.parent.right = x
-        if y is not z:
-            # y is the node to splice out, x is its child
-            y.left = z.left
-            y.right = z.right
-            y.parent = z.parent
-            z.left.parent = y
-            z.right.parent = y
-            if z is z.parent.left:
-                z.parent.left = y
-            else:
-                z.parent.right = y
-            if not y.red:
-                y.red = z.red
-                self.__delete_fixup(x)
-            else:
-                y.red = z.red
-        else:
-            if not y.red:
-                self.__delete_fixup(x)
-
-    cdef void __delete_fixup(self, RBNode x):
-        """Rebalance/fix RBTree after a deletion.  RBNode x is the
-        child of the spliced out node."""
-        cdef RBNode rootLeft = self.root.left
-        while not x.red and x is not rootLeft:
-            if x is x.parent.left:
-                w = x.parent.right
-                if w.red:
-                    w.red = False
-                    x.parent.red = True
-                    self.__rotate_left(x.parent)
-                    w = x.parent.right
-                if not w.right.red and not w.left.red:
-                    w.red = True
-                    x = x.parent
-                else:
-                    if not w.right.red:
-                        w.left.red = False
-                        w.red = True
-                        self.__rotate_right(w)
-                        w = x.parent.right
-                    w.red = x.parent.red
-                    x.parent.red = False
-                    w.right.red = False
-                    self.__rotate_left(x.parent)
-                    x = rootLeft # exit loop
-            else: # same as above, left/right switched
-                w = x.parent.left
-                if w.red:
-                    w.red = False
-                    x.parent.red = True
-                    self.__rotate_right(x.parent)
-                    w = x.parent.left
-                if not w.left.red and not w.right.red:
-                    w.red = True
-                    x = x.parent
-                else:
-                    if not w.left.red:
-                        w.right.red = False
-                        w.red = True
-                        self.__rotate_left(w)
-                        w = x.parent.left
-                    w.red = x.parent.red
-                    x.parent.red = False
-                    w.left.red = False
-                    self.__rotate_right(x.parent)
-                    x = rootLeft # exit loop
-        x.red = False
-
-    # Walking, searching
-    def __iter__(self):
-        return self.inorder()
-
-    def inorder(self, RBNode x = None):
-        """Generator that performs an inorder walk for the tree
-        rooted at RBNode x"""
-        if x is None:
-            x = self.getroot()
-        while x.left is not self.nil:
-            x = x.left
-        while x is not self.nil:
-            yield x
-            x = self.__successor(x)
-
-    cpdef RBNode find(self, double start, double end):
-        """Return the node with exactly the given start and end."""
-        cdef RBNode x = self.getroot()
-        while x is not self.nil:
-            if start < x.start:
-                x = x.left
-            elif start == x.start:
-                if end == x.end:
-                    break # found it
-                elif end < x.end:
-                    x = x.left
-                else:
-                    x = x.right
-            else:
-                x = x.right
-        return x if x is not self.nil else None
-
-    cpdef RBNode find_left_end(self, double t):
-        """Find the leftmode node with end >= t.  With non-overlapping
-        intervals, this is the first node that might overlap time t.
-
-        Note that this relies on non-overlapping intervals, since
-        it assumes that we can use the endpoints to traverse the
-        tree even though it was created using the start points."""
-        cdef RBNode x = self.getroot()
-        while x is not self.nil:
-            if t < x.end:
-                if x.left is self.nil:
-                    break
-                x = x.left
-            elif t == x.end:
-                break
-            else:
-                if x.right is self.nil:
-                    x = self.__successor(x)
-                    break
-                x = x.right
-        return x if x is not self.nil else None
-
-    cpdef RBNode find_right_start(self, double t):
-        """Find the rightmode node with start <= t.  With non-overlapping
-        intervals, this is the last node that might overlap time t."""
-        cdef RBNode x = self.getroot()
-        while x is not self.nil:
-            if t < x.start:
-                if x.left is self.nil:
-                    x = self.__predecessor(x)
-                    break
-                x = x.left
-            elif t == x.start:
-                break
-            else:
-                if x.right is self.nil:
-                    break
-                x = x.right
-        return x if x is not self.nil else None
-
-    # Intersections
-    def intersect(self, double start, double end):
-        """Generator that returns nodes that overlap the given
-        (start,end) range.  Assumes non-overlapping intervals."""
-        # Start with the leftmode node that ends after start
-        cdef RBNode n = self.find_left_end(start)
-        while n is not None:
-            if n.start >= end:
-                # this node starts after the requested end; we're done
-                break
-            if start < n.end:
-                # this node overlaps our requested area
-                yield n
-            n = self.successor(n)

nilmdb/server/rbtree.pyxdep

@@ -1 +0,0 @@
-rbtree.pxd

nilmdb/server/rocket.c

@@ -1,657 +0,0 @@
-#include <Python.h>
-#include <structmember.h>
-#include <endian.h>
-
-#include <ctype.h>
-#include <stdint.h>
-
-/* Values missing from stdint.h */
-#define UINT8_MIN 0
-#define UINT16_MIN 0
-#define UINT32_MIN 0
-#define UINT64_MIN 0
-
-/* Marker values (if min == max, skip range check) */
-#define FLOAT32_MIN 0
-#define FLOAT32_MAX 0
-#define FLOAT64_MIN 0
-#define FLOAT64_MAX 0
-
-typedef int64_t timestamp_t;
-
-/* This code probably needs to be double-checked for the case where
-   sizeof(long) != 8, so enforce that here with something that will
-   fail at build time.  We assume that the python integer type can
-   hold an int64_t. */
-const static char __long_ok[1 - 2*!(sizeof(int64_t) ==
-				    sizeof(long int))] = { 0 };
-
-/* Somewhat arbitrary, just so we can use fixed sizes for strings
-   etc. */
-static const int MAX_LAYOUT_COUNT = 128;
-
-/* Error object and constants */
-static PyObject *ParseError;
-typedef enum {
-	ERR_OTHER,
-	ERR_NON_MONOTONIC,
-	ERR_OUT_OF_INTERVAL,
-} parseerror_code_t;
-static void add_parseerror_codes(PyObject *module)
-{
-	PyModule_AddIntMacro(module, ERR_OTHER);
-	PyModule_AddIntMacro(module, ERR_NON_MONOTONIC);
-	PyModule_AddIntMacro(module, ERR_OUT_OF_INTERVAL);
-}
-
-/* Helpers to raise ParseErrors.  Use "return raise_str(...)" etc. */
-static PyObject *raise_str(int line, int col, int code, const char *string)
-{
-	PyObject *o;
-	o = Py_BuildValue("(iiis)", line, col, code, string);
-	if (o != NULL) {
-		PyErr_SetObject(ParseError, o);
-		Py_DECREF(o);
-	}
-	return NULL;
-}
-static PyObject *raise_int(int line, int col, int code, int64_t num)
-{
-	PyObject *o;
-	o = Py_BuildValue("(iiil)", line, col, code, num);
-	if (o != NULL) {
-		PyErr_SetObject(ParseError, o);
-		Py_DECREF(o);
-	}
-	return NULL;
-}
-
-/****
- * Layout and type helpers
- */
-typedef union {
-	int8_t i;
-	uint8_t u;
-} union8_t;
-typedef union {
-	int16_t i;
-	uint16_t u;
-} union16_t;
-typedef union {
-	int32_t i;
-	uint32_t u;
-	float f;
-} union32_t;
-typedef union {
-	int64_t i;
-	uint64_t u;
-	double d;
-} union64_t;
-
-typedef enum {
-	LAYOUT_TYPE_NONE,
-	LAYOUT_TYPE_INT8,
-	LAYOUT_TYPE_UINT8,
-	LAYOUT_TYPE_INT16,
-	LAYOUT_TYPE_UINT16,
-	LAYOUT_TYPE_INT32,
-	LAYOUT_TYPE_UINT32,
-	LAYOUT_TYPE_INT64,
-	LAYOUT_TYPE_UINT64,
-	LAYOUT_TYPE_FLOAT32,
-	LAYOUT_TYPE_FLOAT64,
-} layout_type_t;
-
-struct {
-	char *string;
-	layout_type_t layout;
-	int size;
-} type_lookup[] = {
-	{ "int8",    LAYOUT_TYPE_INT8,    1 },
-	{ "uint8",   LAYOUT_TYPE_UINT8,   1 },
-	{ "int16",   LAYOUT_TYPE_INT16,   2 },
-	{ "uint16",  LAYOUT_TYPE_UINT16,  2 },
-	{ "int32",   LAYOUT_TYPE_INT32,   4 },
-	{ "uint32",  LAYOUT_TYPE_UINT32,  4 },
-	{ "int64",   LAYOUT_TYPE_INT64,   8 },
-	{ "uint64",  LAYOUT_TYPE_UINT64,  8 },
-	{ "float32", LAYOUT_TYPE_FLOAT32, 4 },
-	{ "float64", LAYOUT_TYPE_FLOAT64, 8 },
-	{ NULL }
-};
-
-/****
- * Object definition, init, etc
- */
-
-/* Rocket object */
-typedef struct {
-	PyObject_HEAD
-	layout_type_t layout_type;
-	int layout_count;
-	int binary_size;
-	FILE *file;
-	int file_size;
-} Rocket;
-
-/* Dealloc / new */
-static void Rocket_dealloc(Rocket *self)
-{
-	if (self->file) {
-		fprintf(stderr, "rocket: file wasn't closed\n");
-		fclose(self->file);
-		self->file = NULL;
-	}
-	self->ob_type->tp_free((PyObject *)self);
-}
-
-static PyObject *Rocket_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
-{
-	Rocket *self;
-
-	self = (Rocket *)type->tp_alloc(type, 0);
-	if (!self)
-		return NULL;
-	self->layout_type = LAYOUT_TYPE_NONE;
-	self->layout_count = 0;
-	self->binary_size = 0;
-	self->file = NULL;
-	self->file_size = -1;
-	return (PyObject *)self;
-}
-
-/* .__init__(layout, file) */
-static int Rocket_init(Rocket *self, PyObject *args, PyObject *kwds)
-{
-	const char *layout, *path;
-	static char *kwlist[] = { "layout", "file", NULL };
-	if (!PyArg_ParseTupleAndKeywords(args, kwds, "sz", kwlist,
-					 &layout, &path))
-		return -1;
-	if (!layout)
-		return -1;
-	if (path) {
-		if ((self->file = fopen(path, "a+b")) == NULL) {
-			PyErr_SetFromErrno(PyExc_OSError);
-			return -1;
-		}
-		self->file_size = -1;
-	} else {
-		self->file = NULL;
-	}
-
-	const char *under;
-	char *tmp;
-	under = strchr(layout, '_');
-	if (!under) {
-		PyErr_SetString(PyExc_ValueError, "no such layout: "
-				"badly formatted string");
-		return -1;
-	}
-	self->layout_count = strtoul(under+1, &tmp, 10);
-	if (self->layout_count < 1 || *tmp != '\0') {
-		PyErr_SetString(PyExc_ValueError, "no such layout: "
-				"bad count");
-		return -1;
-	}
-	if (self->layout_count >= MAX_LAYOUT_COUNT) {
-		PyErr_SetString(PyExc_ValueError, "no such layout: "
-				"count too high");
-		return -1;
-	}
-
-	int i;
-	for (i = 0; type_lookup[i].string; i++)
-		if (strncmp(layout, type_lookup[i].string, under-layout) == 0)
-			break;
-	if (!type_lookup[i].string) {
-		PyErr_SetString(PyExc_ValueError, "no such layout: "
-				"bad data type");
-		return -1;
-	}
-	self->layout_type = type_lookup[i].layout;
-	self->binary_size = 8 + (type_lookup[i].size * self->layout_count);
-
-	return 0;
-}
-
-/* .close() */
-static PyObject *Rocket_close(Rocket *self)
-{
-	if (self->file) {
-		fclose(self->file);
-		self->file = NULL;
-	}
-	Py_INCREF(Py_None);
-	return Py_None;
-}
-
-/* .file_size property */
-static PyObject *Rocket_get_file_size(Rocket *self)
-{
-	if (!self->file) {
-		PyErr_SetString(PyExc_AttributeError, "no file");
-		return NULL;
-	}
-	if (self->file_size < 0) {
-		int oldpos;
-		if (((oldpos = ftell(self->file)) < 0) ||
-		    (fseek(self->file, 0, SEEK_END) < 0) ||
-		    ((self->file_size = ftell(self->file)) < 0) ||
-		    (fseek(self->file, oldpos, SEEK_SET) < 0)) {
-			PyErr_SetFromErrno(PyExc_OSError);
-			return NULL;
-		}
-	}
-	return PyInt_FromLong(self->file_size);
-}
-
-/****
- * Append from string
- */
-static inline long int strtol10(const char *nptr, char **endptr) {
-	return strtol(nptr, endptr, 10);
-}
-static inline long int strtoul10(const char *nptr, char **endptr) {
-	return strtoul(nptr, endptr, 10);
-}
-
-/* .append_string(count, data, offset, linenum, start, end, last_timestamp) */
-static PyObject *Rocket_append_string(Rocket *self, PyObject *args)
-{
-	int count;
-	const char *data;
-	int offset;
-	const char *linestart;
-	int linenum;
-	timestamp_t start;
-	timestamp_t end;
-	timestamp_t last_timestamp;
-
-	int written = 0;
-	char *endptr;
-	union8_t t8;
-	union16_t t16;
-	union32_t t32;
-	union64_t t64;
-	int i;
-
-	/* It would be nice to use 't#' instead of 's' for data,
-	   but we need the null termination for strto*.  If we had
-	   strnto* that took a length, we could use t# and not require
-	   a copy. */
-	if (!PyArg_ParseTuple(args, "isiilll:append_string", &count,
-			      &data, &offset, &linenum,
-			      &start, &end, &last_timestamp))
-		return NULL;
-
-	/* Skip spaces, but don't skip over a newline. */
-#define SKIP_BLANK(buf) do {			\
-	while (isspace(*buf)) {			\
-		if (*buf == '\n')		\
-			break;			\
-		buf++;				\
-	} } while(0)
-
-	const char *buf = &data[offset];
-	while (written < count && *buf)
-	{
-		linestart = buf;
-		linenum++;
-
-		/* Skip leading whitespace and commented lines */
-		SKIP_BLANK(buf);
-		if (*buf == '#') {
-			while (*buf && *buf != '\n')
-				buf++;
-			if (*buf)
-				buf++;
-			continue;
-		}
-
-		/* Extract timestamp */
-		t64.i = strtoll(buf, &endptr, 10);
-		if (endptr == buf || !isspace(*endptr)) {
-			/* Try parsing as a double instead */
-			t64.d = strtod(buf, &endptr);
-			if (endptr == buf)
-				goto bad_timestamp;
-			if (!isspace(*endptr))
-				goto cant_parse_value;
-			t64.i = round(t64.d);
-		}
-		if (t64.i <= last_timestamp)
-			return raise_int(linenum, buf - linestart + 1,
-					 ERR_NON_MONOTONIC, t64.i);
-		last_timestamp = t64.i;
-		if (t64.i < start || t64.i >= end)
-			return raise_int(linenum, buf - linestart + 1,
-					 ERR_OUT_OF_INTERVAL, t64.i);
-		t64.u = le64toh(t64.u);
-		if (fwrite(&t64.u, 8, 1, self->file) != 1)
-			goto err;
-		buf = endptr;
-
-		/* Parse all values in the line */
-		switch (self->layout_type) {
-#define CS(type, parsefunc, parsetype, realtype, disktype, letoh, bytes) \
-		case LAYOUT_TYPE_##type:				\
-			/* parse and write in a loop */			\
-			for (i = 0; i < self->layout_count; i++) {	\
-				/* skip non-newlines */			\
-				SKIP_BLANK(buf);			\
-				if (*buf == '\n')			\
-					goto wrong_number_of_values;	\
-				/* parse number */			\
-				parsetype = parsefunc(buf, &endptr);	\
-				if (*endptr && !isspace(*endptr))	\
-					goto cant_parse_value;		\
-				/* check limits */			\
-				if (type##_MIN != type##_MAX &&		\
-				    (parsetype < type##_MIN ||		\
-				     parsetype > type##_MAX))		\
-					goto value_out_of_range;	\
-				/* convert to disk representation */	\
-				realtype = parsetype;			\
-				disktype = letoh(disktype);		\
-				/* write it */				\
-				if (fwrite(&disktype, bytes,		\
-					   1, self->file) != 1)		\
-					goto err;			\
-				/* advance buf */			\
-				buf = endptr;				\
-			}						\
-			/* Skip trailing whitespace and comments */	\
-			SKIP_BLANK(buf);				\
-			if (*buf == '#')				\
-				while (*buf && *buf != '\n')		\
-					buf++;				\
-			if (*buf == '\n')				\
-				buf++;					\
-			else if (*buf != '\0')				\
-				goto extra_data_on_line;		\
-			break
-
-			CS(INT8,   strtol10,  t64.i, t8.i,  t8.u,         , 1);
-			CS(UINT8,  strtoul10, t64.u, t8.u,  t8.u,         , 1);
-			CS(INT16,  strtol10,  t64.i, t16.i, t16.u, le16toh, 2);
-			CS(UINT16, strtoul10, t64.u, t16.u, t16.u, le16toh, 2);
-			CS(INT32,  strtol10,  t64.i, t32.i, t32.u, le32toh, 4);
-			CS(UINT32, strtoul10, t64.u, t32.u, t32.u, le32toh, 4);
-			CS(INT64,  strtol10,  t64.i, t64.i, t64.u, le64toh, 8);
-			CS(UINT64, strtoul10, t64.u, t64.u, t64.u, le64toh, 8);
-			CS(FLOAT32, strtod,   t64.d, t32.f, t32.u, le32toh, 4);
-			CS(FLOAT64, strtod,   t64.d, t64.d, t64.u, le64toh, 8);
-#undef CS
-		default:
-			PyErr_SetString(PyExc_TypeError, "unknown type");
-			return NULL;
-		}
-
-		/* Done this line */
-		written++;
-	}
-
-	fflush(self->file);
-
-	/* Build return value and return */
-	offset = buf - data;
-	PyObject *o;
-	o = Py_BuildValue("(iili)", written, offset, last_timestamp, linenum);
-	return o;
-err:
-	PyErr_SetFromErrno(PyExc_OSError);
-	return NULL;
-bad_timestamp:
-	return raise_str(linenum, buf - linestart + 1,
-			 ERR_OTHER, "bad timestamp");
-cant_parse_value:
-	return raise_str(linenum, buf - linestart + 1,
-			 ERR_OTHER, "can't parse value");
-wrong_number_of_values:
-	return raise_str(linenum, buf - linestart + 1,
-			 ERR_OTHER, "wrong number of values");
-value_out_of_range:
-	return raise_str(linenum, buf - linestart + 1,
-			 ERR_OTHER, "value out of range");
-extra_data_on_line:
-	return raise_str(linenum, buf - linestart + 1,
-			 ERR_OTHER, "extra data on line");
-}
-
-/****
- * Extract to string
- */
-
-static PyObject *Rocket_extract_string(Rocket *self, PyObject *args)
-{
-	long count;
-	long offset;
-
-	if (!PyArg_ParseTuple(args, "ll", &offset, &count))
-		return NULL;
-	if (!self->file) {
-		PyErr_SetString(PyExc_Exception, "no file");
-		return NULL;
-	}
-	/* Seek to target location */
-	if (fseek(self->file, offset, SEEK_SET) < 0) {
-		PyErr_SetFromErrno(PyExc_OSError);
-		return NULL;
-	}
-
-	char *str = NULL, *new;
-	long len_alloc = 0;
-	long len = 0;
-	int ret;
-
-	/* min space free in string (and the maximum length of one
-	   line); this is generous */
-	const int min_free = 32 * MAX_LAYOUT_COUNT;
-
-	/* how much to allocate at once */
-	const int alloc_size = 1048576;
-
-	int row, i;
-	union8_t t8;
-	union16_t t16;
-	union32_t t32;
-	union64_t t64;
-	for (row = 0; row < count; row++) {
-		/* Make sure there's space for a line */
-		if ((len_alloc - len) < min_free) {
-			/* grow by 1 meg at a time */
-			len_alloc += alloc_size;
-			new = realloc(str, len_alloc);
-			if (new == NULL)
-				goto err;
-			str = new;
-		}
-
-		/* Read and print timestamp */
-		if (fread(&t64.u, 8, 1, self->file) != 1)
-			goto err;
-		t64.u = le64toh(t64.u);
-		ret = sprintf(&str[len], "%ld", t64.i);
-		if (ret <= 0)
-			goto err;
-		len += ret;
-
-		/* Read and print values */
-		switch (self->layout_type) {
-#define CASE(type, fmt, fmttype, disktype, letoh, bytes)		\
-		case LAYOUT_TYPE_##type:				\
-			/* read and format in a loop */			\
-			for (i = 0; i < self->layout_count; i++) {	\
-				if (fread(&disktype, bytes,		\
-					  1, self->file) < 0)		\
-					goto err;			\
-				disktype = letoh(disktype);		\
-				ret = sprintf(&str[len], " " fmt,	\
-					      fmttype);			\
-				if (ret <= 0)				\
-					goto err;			\
-				len += ret;				\
-			}						\
-			break
-			CASE(INT8,   "%hhd",   t8.i,  t8.u,         , 1);
-			CASE(UINT8,  "%hhu",   t8.u,  t8.u,         , 1);
-			CASE(INT16,  "%hd",    t16.i, t16.u, le16toh, 2);
-			CASE(UINT16, "%hu",    t16.u, t16.u, le16toh, 2);
-			CASE(INT32,  "%d",     t32.i, t32.u, le32toh, 4);
-			CASE(UINT32, "%u",     t32.u, t32.u, le32toh, 4);
-			CASE(INT64,  "%ld",    t64.i, t64.u, le64toh, 8);
-			CASE(UINT64, "%lu",    t64.u, t64.u, le64toh, 8);
-			/* These next two are a bit debatable.  floats
-			   are 6-9 significant figures, so we print 7.
-			   Doubles are 15-19, so we print 17.  This is
-			   similar to the old prep format for float32.
-			*/
-			CASE(FLOAT32, "%.6e",  t32.f, t32.u, le32toh, 4);
-			CASE(FLOAT64, "%.16e", t64.d, t64.u, le64toh, 8);
-#undef CASE
-		default:
-			PyErr_SetString(PyExc_TypeError, "unknown type");
-			if (str) free(str);
-			return NULL;
-		}
-		str[len++] = '\n';
-	}
-
-	PyObject *pystr = PyString_FromStringAndSize(str, len);
-	free(str);
-	return pystr;
-err:
-	if (str) free(str);
-	PyErr_SetFromErrno(PyExc_OSError);
-	return NULL;
-}
-
-
-/****
- * Extract timestamp
- */
-static PyObject *Rocket_extract_timestamp(Rocket *self, PyObject *args)
-{
-	long offset;
-	union64_t t64;
-	if (!PyArg_ParseTuple(args, "l", &offset))
-		return NULL;
-	if (!self->file) {
-		PyErr_SetString(PyExc_Exception, "no file");
-		return NULL;
-	}
-
-	/* Seek to target location and read timestamp */
-	if ((fseek(self->file, offset, SEEK_SET) < 0) ||
-	    (fread(&t64.u, 8, 1, self->file) != 1)) {
-		PyErr_SetFromErrno(PyExc_OSError);
-		return NULL;
-	}
-
-	/* Convert and return */
-	t64.u = le64toh(t64.u);
-	return Py_BuildValue("l", t64.i);
-}
-
-/****
- * Module and type setup
- */
-
-static PyGetSetDef Rocket_getsetters[] = {
-	{ "file_size", (getter)Rocket_get_file_size, NULL,
-	  "file size in bytes", NULL },
-	{ NULL },
-};
-
-static PyMemberDef Rocket_members[] = {
-	{ "binary_size", T_INT, offsetof(Rocket, binary_size), 0,
-	  "binary size per row" },
-	{ NULL },
-};
-
-static PyMethodDef Rocket_methods[] = {
-	{ "close", (PyCFunction)Rocket_close, METH_NOARGS,
-	  "close(self)\n\n"
-	  "Close file handle" },
-
-	{ "append_string", (PyCFunction)Rocket_append_string, METH_VARARGS,
-	  "append_string(self, count, data, offset, line, start, end, ts)\n\n"
-          "Parse string and append data.\n"
-	  "\n"
-	  "  count: maximum number of rows to add\n"
-          "  data: string data\n"
-          "  offset: byte offset into data to start parsing\n"
-          "  line: current line number of data\n"
-          "  start: starting timestamp for interval\n"
-          "  end: end timestamp for interval\n"
-          "  ts: last timestamp that was previously parsed\n"
-	  "\n"
-	  "Raises ParseError if timestamps are non-monotonic, outside\n"
-	  "the start/end interval etc.\n"
-	  "\n"
-          "On success, return a tuple with three values:\n"
-          "  added_rows: how many rows were added from the file\n"
-          "  data_offset: current offset into the data string\n"
-          "  last_timestamp: last timestamp we parsed" },
-
-	{ "extract_string", (PyCFunction)Rocket_extract_string, METH_VARARGS,
-	  "extract_string(self, offset, count)\n\n"
-	  "Extract count rows of data from the file at offset offset.\n"
-	  "Return an ascii formatted string according to the layout" },
-
-	{ "extract_timestamp",
-	  (PyCFunction)Rocket_extract_timestamp, METH_VARARGS,
-	  "extract_timestamp(self, offset)\n\n"
-	  "Extract a single timestamp from the file" },
-
-	{ NULL },
-};
-
-static PyTypeObject RocketType = {
-	PyObject_HEAD_INIT(NULL)
-
-	.tp_name	= "rocket.Rocket",
-	.tp_basicsize	= sizeof(Rocket),
-	.tp_flags	= Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,
-
-	.tp_new		= Rocket_new,
-	.tp_dealloc	= (destructor)Rocket_dealloc,
-	.tp_init	= (initproc)Rocket_init,
-	.tp_methods	= Rocket_methods,
-	.tp_members	= Rocket_members,
-	.tp_getset	= Rocket_getsetters,
-
-	.tp_doc		= ("rocket.Rocket(layout, file)\n\n"
-			   "C implementation of the \"rocket\" data parsing\n"
-			   "interface, which translates between the binary\n"
-			   "format on disk and the ASCII or Python list\n"
-			   "format used when communicating with the rest of\n"
-			   "the system.")
-};
-
-static PyMethodDef module_methods[] = {
-	{ NULL },
-};
-
-PyMODINIT_FUNC
-initrocket(void)
-{
-	PyObject *module;
-
-	RocketType.tp_new = PyType_GenericNew;
-	if (PyType_Ready(&RocketType) < 0)
-		return;
-
-	module = Py_InitModule3("rocket", module_methods,
-				"Rocket data parsing and formatting module");
-	Py_INCREF(&RocketType);
-	PyModule_AddObject(module, "Rocket", (PyObject *)&RocketType);
-
-	ParseError = PyErr_NewException("rocket.ParseError", NULL, NULL);
-	Py_INCREF(ParseError);
-	PyModule_AddObject(module, "ParseError", ParseError);
-	add_parseerror_codes(module);
-
-	return;
-}

nilmdb/server/server.py

@@ -1,591 +0,0 @@
-"""CherryPy-based server for accessing NILM database via HTTP"""
-
-# Need absolute_import so that "import nilmdb" won't pull in
-# nilmdb.py, but will pull the nilmdb module instead.
-from __future__ import absolute_import
-import nilmdb.server
-from nilmdb.utils.printf import *
-from nilmdb.server.errors import NilmDBError
-from nilmdb.utils.time import string_to_timestamp
-
-import cherrypy
-import sys
-import os
-import simplejson as json
-import decorator
-import psutil
-
-class NilmApp(object):
-    def __init__(self, db):
-        self.db = db
-
-# Decorators
-def chunked_response(func):
-    """Decorator to enable chunked responses."""
-    # Set this to False to get better tracebacks from some requests
-    # (/stream/extract, /stream/intervals).
-    func._cp_config = { 'response.stream': True }
-    return func
-
-def response_type(content_type):
-    """Return a decorator-generating function that sets the
-    response type to the specified string."""
-    def wrapper(func, *args, **kwargs):
-        cherrypy.response.headers['Content-Type'] = content_type
-        return func(*args, **kwargs)
-    return decorator.decorator(wrapper)
-
-@decorator.decorator
-def workaround_cp_bug_1200(func, *args, **kwargs): # pragma: no cover
-    """Decorator to work around CherryPy bug #1200 in a response
-    generator.
-
-    Even if chunked responses are disabled, LookupError or
-    UnicodeError exceptions may still be swallowed by CherryPy due to
-    bug #1200.  This throws them as generic Exceptions instead so that
-    they make it through.
-    """
-    exc_info = None
-    try:
-        for val in func(*args, **kwargs):
-            yield val
-    except (LookupError, UnicodeError):
-        # Re-raise it, but maintain the original traceback
-        exc_info = sys.exc_info()
-        new_exc = Exception(exc_info[0].__name__ + ": " + str(exc_info[1]))
-        raise new_exc, None, exc_info[2]
-    finally:
-        del exc_info
-
-def exception_to_httperror(*expected):
-    """Return a decorator-generating function that catches expected
-    errors and throws a HTTPError describing it instead.
-
-        @exception_to_httperror(NilmDBError, ValueError)
-        def foo():
-            pass
-    """
-    def wrapper(func, *args, **kwargs):
-        exc_info = None
-        try:
-            return func(*args, **kwargs)
-        except expected:
-            # Re-raise it, but maintain the original traceback
-            exc_info = sys.exc_info()
-            new_exc = cherrypy.HTTPError("400 Bad Request", str(exc_info[1]))
-            raise new_exc, None, exc_info[2]
-        finally:
-            del exc_info
-    # We need to preserve the function's argspecs for CherryPy to
-    # handle argument errors correctly.  Decorator.decorator takes
-    # care of that.
-    return decorator.decorator(wrapper)
-
-# Custom CherryPy tools
-
-def CORS_allow(methods):
-    """This does several things:
-
-    Handles CORS preflight requests.
-    Adds Allow: header to all requests.
-    Raise 405 if request.method not in method.
-
-    It is similar to cherrypy.tools.allow, with the CORS stuff added.
-    """
-    request = cherrypy.request.headers
-    response = cherrypy.response.headers
-
-    if not isinstance(methods, (tuple, list)): # pragma: no cover
-        methods = [ methods ]
-    methods = [ m.upper() for m in methods if m ]
-    if not methods: # pragma: no cover
-        methods = [ 'GET', 'HEAD' ]
-    elif 'GET' in methods and 'HEAD' not in methods: # pragma: no cover
-        methods.append('HEAD')
-    response['Allow'] = ', '.join(methods)
-
-    # Allow all origins
-    if 'Origin' in request:
-        response['Access-Control-Allow-Origin'] = request['Origin']
-
-    # If it's a CORS request, send response.
-    request_method = request.get("Access-Control-Request-Method", None)
-    request_headers = request.get("Access-Control-Request-Headers", None)
-    if (cherrypy.request.method == "OPTIONS" and
-        request_method and request_headers):
-        response['Access-Control-Allow-Headers'] = request_headers
-        response['Access-Control-Allow-Methods'] = ', '.join(methods)
-        # Try to stop further processing and return a 200 OK
-        cherrypy.response.status = "200 OK"
-        cherrypy.response.body = ""
-        cherrypy.request.handler = lambda: ""
-        return
-
-    # Reject methods that were not explicitly allowed
-    if cherrypy.request.method not in methods:
-        raise cherrypy.HTTPError(405)
-
-cherrypy.tools.CORS_allow = cherrypy.Tool('on_start_resource', CORS_allow)
-
-# Helper for json_in tool to process JSON data into normal request
-# parameters.
-def json_to_request_params(body):
-    cherrypy.lib.jsontools.json_processor(body)
-    if not isinstance(cherrypy.request.json, dict):
-        raise cherrypy.HTTPError(415)
-    cherrypy.request.params.update(cherrypy.request.json)
-
-# CherryPy apps
-class Root(NilmApp):
-    """Root application for NILM database"""
-
-    def __init__(self, db):
-        super(Root, self).__init__(db)
-
-    # /
-    @cherrypy.expose
-    def index(self):
-        raise cherrypy.NotFound()
-
-    # /favicon.ico
-    @cherrypy.expose
-    def favicon_ico(self):
-        raise cherrypy.NotFound()
-
-    # /version
-    @cherrypy.expose
-    @cherrypy.tools.json_out()
-    def version(self):
-        return nilmdb.__version__
-
-    # /dbinfo
-    @cherrypy.expose
-    @cherrypy.tools.json_out()
-    def dbinfo(self):
-        """Return a dictionary with the database path,
-        size of the database in bytes, and free disk space in bytes"""
-        path = self.db.get_basepath()
-        return { "path": path,
-                 "size": nilmdb.utils.du(path),
-                 "free": psutil.disk_usage(path).free }
-
-class Stream(NilmApp):
-    """Stream-specific operations"""
-
-    # /stream/list
-    # /stream/list?layout=float32_8
-    # /stream/list?path=/newton/prep&extended=1
-    @cherrypy.expose
-    @cherrypy.tools.json_out()
-    def list(self, path = None, layout = None, extended = None):
-        """List all streams in the database.  With optional path or
-        layout parameter, just list streams that match the given path
-        or layout.
-
-        If extent is not given, returns a list of lists containing
-        the path and layout: [ path, layout ]
-
-        If extended is provided, returns a list of lists containing
-        extended info: [ path, layout, extent_min, extent_max,
-        total_rows, total_seconds ].  More data may be added.
-        """
-        return self.db.stream_list(path, layout, bool(extended))
-
-    # /stream/create?path=/newton/prep&layout=float32_8
-    @cherrypy.expose
-    @cherrypy.tools.json_in()
-    @cherrypy.tools.json_out()
-    @exception_to_httperror(NilmDBError, ValueError)
-    @cherrypy.tools.CORS_allow(methods = ["POST"])
-    def create(self, path, layout):
-        """Create a new stream in the database.  Provide path
-        and one of the nilmdb.layout.layouts keys.
-        """
-        return self.db.stream_create(path, layout)
-
-    # /stream/destroy?path=/newton/prep
-    @cherrypy.expose
-    @cherrypy.tools.json_in()
-    @cherrypy.tools.json_out()
-    @exception_to_httperror(NilmDBError)
-    @cherrypy.tools.CORS_allow(methods = ["POST"])
-    def destroy(self, path):
-        """Delete a stream and its associated data."""
-        return self.db.stream_destroy(path)
-
-    # /stream/rename?oldpath=/newton/prep&newpath=/newton/prep/1
-    @cherrypy.expose
-    @cherrypy.tools.json_in()
-    @cherrypy.tools.json_out()
-    @exception_to_httperror(NilmDBError, ValueError)
-    @cherrypy.tools.CORS_allow(methods = ["POST"])
-    def rename(self, oldpath, newpath):
-        """Rename a stream."""
-        return self.db.stream_rename(oldpath, newpath)
-
-    # /stream/get_metadata?path=/newton/prep
-    # /stream/get_metadata?path=/newton/prep&key=foo&key=bar
-    @cherrypy.expose
-    @cherrypy.tools.json_out()
-    def get_metadata(self, path, key=None):
-        """Get metadata for the named stream.  If optional
-        key parameters are specified, only return metadata
-        matching the given keys."""
-        try:
-            data = self.db.stream_get_metadata(path)
-        except nilmdb.server.nilmdb.StreamError as e:
-            raise cherrypy.HTTPError("404 Not Found", e.message)
-        if key is None:  # If no keys specified, return them all
-            key = data.keys()
-        elif not isinstance(key, list):
-            key = [ key ]
-        result = {}
-        for k in key:
-            if k in data:
-                result[k] = data[k]
-            else: # Return "None" for keys with no matching value
-                result[k] = None
-        return result
-
-    # Helper for set_metadata and get_metadata
-    def _metadata_helper(self, function, path, data):
-        if not isinstance(data, dict):
-            try:
-                data = dict(json.loads(data))
-            except TypeError as e:
-                raise NilmDBError("can't parse 'data' parameter: " + e.message)
-        for key in data:
-            if not (isinstance(data[key], basestring) or
-                    isinstance(data[key], float) or
-                    isinstance(data[key], int)):
-                raise NilmDBError("metadata values must be a string or number")
-        function(path, data)
-
-    # /stream/set_metadata?path=/newton/prep&data=<json>
-    @cherrypy.expose
-    @cherrypy.tools.json_in()
-    @cherrypy.tools.json_out()
-    @exception_to_httperror(NilmDBError, LookupError)
-    @cherrypy.tools.CORS_allow(methods = ["POST"])
-    def set_metadata(self, path, data):
-        """Set metadata for the named stream, replacing any existing
-        metadata.  Data can be json-encoded or a plain dictionary."""
-        self._metadata_helper(self.db.stream_set_metadata, path, data)
-
-    # /stream/update_metadata?path=/newton/prep&data=<json>
-    @cherrypy.expose
-    @cherrypy.tools.json_in()
-    @cherrypy.tools.json_out()
-    @exception_to_httperror(NilmDBError, LookupError, ValueError)
-    @cherrypy.tools.CORS_allow(methods = ["POST"])
-    def update_metadata(self, path, data):
-        """Set metadata for the named stream, replacing any existing
-        metadata.  Data can be json-encoded or a plain dictionary."""
-        self._metadata_helper(self.db.stream_update_metadata, path, data)
-
-    # /stream/insert?path=/newton/prep
-    @cherrypy.expose
-    @cherrypy.tools.json_out()
-    @exception_to_httperror(NilmDBError, ValueError)
-    @cherrypy.tools.CORS_allow(methods = ["PUT"])
-    def insert(self, path, start, end):
-        """
-        Insert new data into the database.  Provide textual data
-        (matching the path's layout) as a HTTP PUT.
-        """
-        # Important that we always read the input before throwing any
-        # errors, to keep lengths happy for persistent connections.
-        # Note that CherryPy 3.2.2 has a bug where this fails for GET
-        # requests, if we ever want to handle those (issue #1134)
-        body = cherrypy.request.body.read()
-
-        # Check path and get layout
-        streams = self.db.stream_list(path = path)
-        if len(streams) != 1:
-            raise cherrypy.HTTPError("404 Not Found", "No such stream")
-
-        # Check limits
-        start = string_to_timestamp(start)
-        end = string_to_timestamp(end)
-        if start >= end:
-            raise cherrypy.HTTPError("400 Bad Request",
-                                     "start must precede end")
-
-        # Pass the data directly to nilmdb, which will parse it and
-        # raise a ValueError if there are any problems.
-        self.db.stream_insert(path, start, end, body)
-
-        # Done
-        return
-
-    # /stream/remove?path=/newton/prep
-    # /stream/remove?path=/newton/prep&start=1234567890.0&end=1234567899.0
-    @cherrypy.expose
-    @cherrypy.tools.json_in()
-    @cherrypy.tools.json_out()
-    @exception_to_httperror(NilmDBError)
-    @cherrypy.tools.CORS_allow(methods = ["POST"])
-    def remove(self, path, start = None, end = None):
-        """
-        Remove data from the backend database.  Removes all data in
-        the interval [start, end).  Returns the number of data points
-        removed.
-        """
-        if start is not None:
-            start = string_to_timestamp(start)
-        if end is not None:
-            end = string_to_timestamp(end)
-        if start is not None and end is not None:
-            if start >= end:
-                raise cherrypy.HTTPError("400 Bad Request",
-                                         "start must precede end")
-        return self.db.stream_remove(path, start, end)
-
-    # /stream/intervals?path=/newton/prep
-    # /stream/intervals?path=/newton/prep&start=1234567890.0&end=1234567899.0
-    # /stream/intervals?path=/newton/prep&diffpath=/newton/prep2
-    @cherrypy.expose
-    @chunked_response
-    @response_type("application/x-json-stream")
-    def intervals(self, path, start = None, end = None, diffpath = None):
-        """
-        Get intervals from backend database.  Streams the resulting
-        intervals as JSON strings separated by CR LF pairs.  This may
-        make multiple requests to the nilmdb backend to avoid causing
-        it to block for too long.
-
-        Returns intervals between 'start' and 'end' belonging to
-        'path'.  If 'diff' is provided, the set-difference between
-        intervals in 'path' and intervals in 'diffpath' are
-        returned instead.
-
-        Note that the response type is the non-standard
-        'application/x-json-stream' for lack of a better option.
-        """
-        if start is not None:
-            start = string_to_timestamp(start)
-        if end is not None:
-            end = string_to_timestamp(end)
-
-        if start is not None and end is not None:
-            if start >= end:
-                raise cherrypy.HTTPError("400 Bad Request",
-                                         "start must precede end")
-
-        if len(self.db.stream_list(path = path)) != 1:
-            raise cherrypy.HTTPError("404", "No such stream: " + path)
-
-        if diffpath and len(self.db.stream_list(path = diffpath)) != 1:
-            raise cherrypy.HTTPError("404", "No such stream: " + diffpath)
-
-        @workaround_cp_bug_1200
-        def content(start, end):
-            # Note: disable chunked responses to see tracebacks from here.
-            while True:
-                (ints, restart) = self.db.stream_intervals(path, start, end,
-                                                           diffpath)
-                response = ''.join([ json.dumps(i) + "\r\n" for i in ints ])
-                yield response
-                if restart == 0:
-                    break
-                start = restart
-        return content(start, end)
-
-    # /stream/extract?path=/newton/prep&start=1234567890.0&end=1234567899.0
-    @cherrypy.expose
-    @chunked_response
-    @response_type("text/plain")
-    def extract(self, path, start = None, end = None, count = False):
-        """
-        Extract data from backend database.  Streams the resulting
-        entries as ASCII text lines separated by newlines.  This may
-        make multiple requests to the nilmdb backend to avoid causing
-        it to block for too long.
-
-        Add count=True to return a count rather than actual data.
-        """
-        if start is not None:
-            start = string_to_timestamp(start)
-        if end is not None:
-            end = string_to_timestamp(end)
-
-        # Check parameters
-        if start is not None and end is not None:
-            if start >= end:
-                raise cherrypy.HTTPError("400 Bad Request",
-                                         "start must precede end")
-
-        # Check path and get layout
-        streams = self.db.stream_list(path = path)
-        if len(streams) != 1:
-            raise cherrypy.HTTPError("404 Not Found", "No such stream")
-
-        @workaround_cp_bug_1200
-        def content(start, end, count):
-            # Note: disable chunked responses to see tracebacks from here.
-            if count:
-                matched = self.db.stream_extract(path, start, end, count)
-                yield sprintf("%d\n", matched)
-                return
-
-            while True:
-                (data, restart) = self.db.stream_extract(path, start, end)
-                yield data
-
-                if restart == 0:
-                    return
-                start = restart
-        return content(start, end, count)
-
-class Exiter(object):
-    """App that exits the server, for testing"""
-    @cherrypy.expose
-    def index(self):
-        cherrypy.response.headers['Content-Type'] = 'text/plain'
-        def content():
-            yield 'Exiting by request'
-            raise SystemExit
-        return content()
-    index._cp_config = { 'response.stream': True }
-
-class Server(object):
-    def __init__(self, db, host = '127.0.0.1', port = 8080,
-                 stoppable = False,       # whether /exit URL exists
-                 embedded = True,         # hide diagnostics and output, etc
-                 fast_shutdown = False,   # don't wait for clients to disconn.
-                 force_traceback = False  # include traceback in all errors
-                 ):
-        # Save server version, just for verification during tests
-        self.version = nilmdb.__version__
-
-        self.embedded = embedded
-        self.db = db
-        if not getattr(db, "_thread_safe", None):
-            raise KeyError("Database object " + str(db) + " doesn't claim "
-                           "to be thread safe.  You should pass "
-                           "nilmdb.utils.serializer_proxy(NilmDB)(args) "
-                           "rather than NilmDB(args).")
-
-        # Build up global server configuration
-        cherrypy.config.update({
-            'server.socket_host': host,
-            'server.socket_port': port,
-            'engine.autoreload_on': False,
-            'server.max_request_body_size': 8*1024*1024,
-            })
-        if self.embedded:
-            cherrypy.config.update({ 'environment': 'embedded' })
-
-        # Build up application specific configuration
-        app_config = {}
-        app_config.update({
-            'error_page.default': self.json_error_page,
-            })
-
-        # Some default headers to just help identify that things are working
-        app_config.update({ 'response.headers.X-Jim-Is-Awesome': 'yeah' })
-
-        # Set up Cross-Origin Resource Sharing (CORS) handler so we
-        # can correctly respond to browsers' CORS preflight requests.
-        # This also limits verbs to GET and HEAD by default.
-        app_config.update({ 'tools.CORS_allow.on': True,
-                            'tools.CORS_allow.methods': ['GET', 'HEAD'] })
-
-        # Configure the 'json_in' tool to also allow other content-types
-        # (like x-www-form-urlencoded), and to treat JSON as a dict that
-        # fills requests.param.
-        app_config.update({ 'tools.json_in.force': False,
-                            'tools.json_in.processor': json_to_request_params })
-
-        # Send tracebacks in error responses.  They're hidden by the
-        # error_page function for client errors (code 400-499).
-        app_config.update({ 'request.show_tracebacks' : True })
-        self.force_traceback = force_traceback
-
-        # Patch CherryPy error handler to never pad out error messages.
-        # This isn't necessary, but then again, neither is padding the
-        # error messages.
-        cherrypy._cperror._ie_friendly_error_sizes = {}
-
-        # Build up the application and mount it
-        root = Root(self.db)
-        root.stream = Stream(self.db)
-        if stoppable:
-            root.exit = Exiter()
-        cherrypy.tree.apps = {}
-        cherrypy.tree.mount(root, "/", config = { "/" : app_config })
-
-        # Shutdowns normally wait for clients to disconnect.  To speed
-        # up tests, set fast_shutdown = True
-        if fast_shutdown:
-            # Setting timeout to 0 triggers os._exit(70) at shutdown, grr...
-            cherrypy.server.shutdown_timeout = 0.01
-        else:
-            cherrypy.server.shutdown_timeout = 5
-
-    def json_error_page(self, status, message, traceback, version):
-        """Return a custom error page in JSON so the client can parse it"""
-        errordata = { "status" : status,
-                      "message" : message,
-                      "traceback" : traceback }
-        # Don't send a traceback if the error was 400-499 (client's fault)
-        try:
-            code = int(status.split()[0])
-            if not self.force_traceback:
-                if code >= 400 and code <= 499:
-                    errordata["traceback"] = ""
-        except Exception: # pragma: no cover
-            pass
-        # Override the response type, which was previously set to text/html
-        cherrypy.serving.response.headers['Content-Type'] = (
-            "application/json;charset=utf-8" )
-        # Undo the HTML escaping that cherrypy's get_error_page function applies
-        # (cherrypy issue 1135)
-        for k, v in errordata.iteritems():
-            v = v.replace("&lt;","<")
-            v = v.replace("&gt;",">")
-            v = v.replace("&amp;","&")
-            errordata[k] = v
-        return json.dumps(errordata, separators=(',',':'))
-
-    def start(self, blocking = False, event = None):
-
-        if not self.embedded: # pragma: no cover
-            # Handle signals nicely
-            if hasattr(cherrypy.engine, "signal_handler"):
-                cherrypy.engine.signal_handler.subscribe()
-            if hasattr(cherrypy.engine, "console_control_handler"):
-                cherrypy.engine.console_control_handler.subscribe()
-
-        # Cherrypy stupidly calls os._exit(70) when it can't bind the
-        # port.  At least try to print a reasonable error and continue
-        # in this case, rather than just dying silently (as we would
-        # otherwise do in embedded mode)
-        real_exit = os._exit
-        def fake_exit(code): # pragma: no cover
-            if code == os.EX_SOFTWARE:
-                fprintf(sys.stderr, "error: CherryPy called os._exit!\n")
-            else:
-                real_exit(code)
-        os._exit = fake_exit
-        cherrypy.engine.start()
-        os._exit = real_exit
-
-        # Signal that the engine has started successfully
-        if event is not None:
-            event.set()
-
-        if blocking:
-            try:
-                cherrypy.engine.wait(cherrypy.engine.states.EXITING,
-                                     interval = 0.1, channel = 'main')
-            except (KeyboardInterrupt, IOError): # pragma: no cover
-                cherrypy.engine.log('Keyboard Interrupt: shutting down bus')
-                cherrypy.engine.exit()
-            except SystemExit: # pragma: no cover
-                cherrypy.engine.log('SystemExit raised: shutting down bus')
-                cherrypy.engine.exit()
-                raise
-
-    def stop(self):
-        cherrypy.engine.exit()

nilmdb/test_fileinterval.py

@@ -0,0 +1,46 @@
+from nilmdb import Interval, IntervalSet, IntervalError, FileInterval
+from datetime import datetime
+from nose.tools import assert_raises
+
+from test_interval import iset
+
+def fiset(string):
+    """Like iset, but builds with FileIntervals instead of Intervals"""
+    iset = IntervalSet()
+    for i, c in enumerate(string):
+        day = datetime.strptime("{0:04d}".format(i+2000), "%Y")
+        if (c == "["):
+            start = day
+        elif (c == "|"):
+            iset += FileInterval(start, day, "test.dat")
+            start = day
+        elif (c == "]"):
+            iset += FileInterval(start, day, "test.dat")
+            del start
+    return iset
+
+def test_fileinterval_vs_interval():
+    """Test FileInterval/Interval inheritance"""
+
+    i = iset("[--]")
+    f = fiset("[--]")
+
+    # check types
+    assert(isinstance(i[0], Interval))
+    assert(not isinstance(i[0], FileInterval))
+    assert(isinstance(f[0], Interval))
+    assert(isinstance(f[0], FileInterval))
+
+    # when doing an intersection, result should be a subset of the first arg
+    u = (i & f)
+    assert(isinstance(u[0], Interval))
+    assert(not isinstance(u[0], FileInterval))
+    u = (f & i)
+    assert(isinstance(u[0], Interval))
+    assert(isinstance(u[0], FileInterval))
+
+    # they're still the same though
+    assert(i == f == u)
+
+    # just for coverage
+    assert_raises(IntervalError, fiset("[]")[0].subset, f[0].start, f[0].end)

nilmdb/test_interval.py

@@ -0,0 +1,189 @@
+from nilmdb import Interval, IntervalSet, IntervalError
+from datetime import datetime
+from nose.tools import assert_raises
+import itertools 
+
+def test_interval():
+    """Test the Interval class"""
+    d1 = datetime.strptime("19801205","%Y%m%d")
+    d2 = datetime.strptime("19900216","%Y%m%d")
+    d3 = datetime.strptime("20111205","%Y%m%d")
+
+    # basic construction
+    i = Interval(d1, d1)
+    i = Interval(d1, d3)
+    assert(i.start == d1)
+    assert(i.end == d3)
+
+    # assignment should work
+    i.start = d2
+    try:
+        i.end = d1
+        raise Exception("should have died there")
+    except IntervalError:
+        pass
+    i.start = d1
+    i.end = d2
+
+    # end before start
+    assert_raises(IntervalError, Interval, d3, d1)
+
+    # wrong type
+    assert_raises(IntervalError, Interval, 1, 2)
+
+    # compare
+    assert(Interval(d1, d2) == Interval(d1, d2))
+    assert(Interval(d1, d2) < Interval(d1, d3))
+    assert(Interval(d1, d3) > Interval(d1, d2))
+    assert(Interval(d1, d2) < Interval(d2, d3))
+    assert(Interval(d1, d3) < Interval(d2, d3))
+    assert(Interval(d2, d2) > Interval(d1, d3))
+    assert(Interval(d3, d3) == Interval(d3, d3))
+    assert_raises(TypeError, cmp, i, 123)
+
+    # subset
+    assert(Interval(d1, d3).subset(d1, d2) == Interval(d1, d2))
+    assert_raises(IntervalError, Interval(d2, d3).subset, d1, d2)
+
+    # append
+    assert(Interval(d1, d2).is_adjacent(Interval(d2,d3)))
+    assert(Interval(d2, d3).is_adjacent(Interval(d1,d2)))
+    assert(not Interval(d2, d3).is_adjacent(Interval(d1,d3)))
+    assert_raises(TypeError, Interval(d1, d2).is_adjacent, 1)
+
+    # misc
+    assert(repr(i) == repr(eval(repr(i).replace("datetime.",""))))
+    assert(str(i) == "[1980-12-05 00:00:00 -> 1990-02-16 00:00:00]")
+
+def test_interval_intersect():
+    """Test Interval intersections"""
+    dates = [ datetime.strptime(year, "%y") for year in [ "00", "01", "02", "03" ] ]
+    perm = list(itertools.permutations(dates, 2))
+    prod = list(itertools.product(perm, perm))
+    should_intersect = {
+        False: [4, 5, 8, 20, 48, 56, 60, 96, 97, 100],
+        True: [0, 1, 2, 12, 13, 14, 16, 17, 24, 25, 26, 28, 29,
+               32, 49, 50, 52, 53, 61, 62, 64, 65, 68, 98, 101, 104]}
+    for i,((a,b),(c,d)) in enumerate(prod):
+        try:
+            i1 = Interval(a, b)
+            i2 = Interval(c, d)
+            assert(i1.intersects(i2) == i2.intersects(i1))
+            assert(i in should_intersect[i1.intersects(i2)])
+        except IntervalError:
+            assert(i not in should_intersect[True] and
+                   i not in should_intersect[False])
+    assert_raises(TypeError, i1.intersects, 1234)
+
+def test_intervalset_construct():
+    """Test interval set construction"""
+    dates = [ datetime.strptime(year, "%y") for year in [ "00", "01", "02", "03" ]]
+
+    a = Interval(dates[0], dates[1])
+    b = Interval(dates[1], dates[2])
+    c = Interval(dates[0], dates[2])
+    d = Interval(dates[2], dates[3])
+
+    iseta = IntervalSet(a)
+    isetb = IntervalSet([a, b])
+    isetc = IntervalSet([a])
+    assert(iseta != isetb)
+    assert(iseta == isetc)
+    assert(iseta != 3)
+    assert(IntervalSet(a) != IntervalSet(b))
+
+    print iseta == None
+    assert_raises(TypeError, cmp, iseta, isetb)
+    assert_raises(IntervalError, IntervalSet, [a, b, c])
+    assert_raises(TypeError, IntervalSet, [1, 2])
+
+    iset = IntervalSet(isetb)   # test iterator
+    assert(iset == isetb)
+    assert(len(iset) == 2)
+    assert(len(IntervalSet()) == 0)
+
+    # Test adding
+    iset = IntervalSet(a)
+    iset += IntervalSet(b)
+    assert(iset == IntervalSet([a, b]))
+    iset = IntervalSet(a)
+    iset += b
+    assert(iset == IntervalSet([a, b]))
+    iset = IntervalSet(a) + IntervalSet(b)
+    assert(iset == IntervalSet([a, b]))
+    iset = IntervalSet(b) + a
+    assert(iset == IntervalSet([a, b]))
+
+    # A set consisting of [0-1],[1-2] should match a set consisting of [0-2]
+    assert(IntervalSet([a,b]) == IntervalSet([c]))
+    # Etc
+    assert(IntervalSet([a,d]) != IntervalSet([c]))
+    assert(IntervalSet([c]) != IntervalSet([a,d]))
+    assert(IntervalSet([c,d]) != IntervalSet([b,d]))
+    
+    # misc
+    assert(repr(iset) == repr(eval(repr(iset).replace("datetime.",""))))
+
+def iset(string):
+    """Build an IntervalSet from a string, for testing purposes
+
+    Each character is a year
+    [ = interval start
+    | = interval end + adjacent start
+    ] = interval end
+    anything else is ignored
+    """
+    iset = IntervalSet()
+    for i, c in enumerate(string):
+        day = datetime.strptime("{0:04d}".format(i+2000), "%Y")
+        if (c == "["):
+            start = day
+        elif (c == "|"):
+            iset += Interval(start, day)
+            start = day
+        elif (c == "]"):
+            iset += Interval(start, day)
+            del start
+    return iset
+
+def test_intervalset_iset():
+    """Test basic iset construction"""
+    assert(iset("  [----]   ") ==
+           iset("  [-|--]   "))
+
+    assert(iset("[]  [--]   ") +
+           iset(" []    [--]") ==
+           iset("[|] [-----]"))
+
+def test_intervalset_intsersect():
+    """Test intersection (&)"""
+    assert_raises(TypeError, iset("[--]").__and__, 1234)
+    
+    assert(iset("[---------]") &
+           iset(" [---]     ") ==
+           iset(" [---]     "))
+
+    assert(iset(" [---]     ") &
+           iset("[---------]") ==
+           iset(" [---]     "))
+
+    assert(iset("    [-----]") &
+           iset(" [-----]   ") ==
+           iset("    [--]   "))
+
+    assert(iset("      [---]") &
+           iset(" [--]      ") ==
+           iset("           "))
+
+    assert(iset("    [-|---]") &
+           iset(" [-----|-] ") ==
+           iset("    [----] "))
+
+    assert(iset("    [-|-]  ") &
+           iset(" [-|--|--] ") ==
+           iset("    [---]  "))
+
+    assert(iset(" [----][--]") &
+           iset("[-] [--] []") ==
+           iset(" [] [-]  []"))
+

nilmdb/utils/__init__.py

@@ -1,13 +0,0 @@
-"""NilmDB utilities"""
-
-from nilmdb.utils.timer import Timer
-from nilmdb.utils.iteratorizer import Iteratorizer
-from nilmdb.utils.serializer import serializer_proxy
-from nilmdb.utils.lrucache import lru_cache
-from nilmdb.utils.diskusage import du, human_size
-from nilmdb.utils.mustclose import must_close
-from nilmdb.utils import atomic
-import nilmdb.utils.threadsafety
-import nilmdb.utils.fallocate
-import nilmdb.utils.time
-import nilmdb.utils.iterator

nilmdb/utils/atomic.py

@@ -1,26 +0,0 @@
-# Atomic file writing helper.
-
-import os
-
-def replace_file(filename, content):
-    """Attempt to atomically and durably replace the filename with the
-    given contents.  This is intended to be 'pretty good on most
-    OSes', but not necessarily bulletproof."""
-
-    newfilename = filename + ".new"
-
-    # Write to new file, flush it
-    with open(newfilename, "wb") as f:
-        f.write(content)
-        f.flush()
-        os.fsync(f.fileno())
-
-    # Move new file over old one
-    try:
-        os.rename(newfilename, filename)
-    except OSError: # pragma: no cover
-        # Some OSes might not support renaming over an existing file.
-        # This is definitely NOT atomic!
-        os.remove(filename)
-        os.rename(newfilename, filename)
-

nilmdb/utils/datetime_tz/__init__.py

@@ -1,710 +0,0 @@
-#!/usr/bin/python
-#
-# Copyright 2009 Google Inc.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#      http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-#
-# Disable the invalid name warning as we are inheriting from a standard library
-# object.
-# pylint: disable-msg=C6409,W0212
-
-"""A version of the datetime module which *cares* about timezones.
-
-This module will never return a naive datetime object. This requires the module
-know your local timezone, which it tries really hard to figure out.
-
-You can override the detection by using the datetime.tzaware.defaulttz_set
-method. It the module is unable to figure out the timezone itself this method
-*must* be called before the normal module is imported. If done before importing
-it can also speed up the time taken to import as the defaulttz will no longer
-try and do the detection.
-"""
-
-__author__ = "tansell@google.com (Tim Ansell)"
-
-import calendar
-import datetime
-import os
-import os.path
-import re
-import time
-import warnings
-import dateutil.parser
-import dateutil.relativedelta
-import dateutil.tz
-import pytz
-import pytz_abbr
-
-
-try:
-  # pylint: disable-msg=C6204
-  import functools
-except ImportError, e:
-
-  class functools(object):
-    """Fake replacement for a full functools."""
-
-    # pylint: disable-msg=W0613
-    @staticmethod
-    def wraps(f, *args, **kw):
-      return f
-
-
-# Need to patch pytz.utc to have a _utcoffset so you can normalize/localize
-# using it.
-pytz.utc._utcoffset = datetime.timedelta()
-
-
-timedelta = datetime.timedelta
-
-
-def _tzinfome(tzinfo):
-  """Gets a tzinfo object from a string.
-
-  Args:
-    tzinfo: A string (or string like) object, or a datetime.tzinfo object.
-
-  Returns:
-    An datetime.tzinfo object.
-
-  Raises:
-    UnknownTimeZoneError: If the timezone given can't be decoded.
-  """
-  if not isinstance(tzinfo, datetime.tzinfo):
-    try:
-      tzinfo = pytz.timezone(tzinfo)
-    except AttributeError:
-      raise pytz.UnknownTimeZoneError("Unknown timezone! %s" % tzinfo)
-  return tzinfo
-
-
-# Our "local" timezone
-_localtz = None
-
-
-def localtz():
-  """Get the local timezone.
-
-  Returns:
-    The localtime timezone as a tzinfo object.
-  """
-  # pylint: disable-msg=W0603
-  global _localtz
-  if _localtz is None:
-    _localtz = detect_timezone()
-  return _localtz
-
-
-def localtz_set(timezone):
-  """Set the local timezone."""
-  # pylint: disable-msg=W0603
-  global _localtz
-  _localtz = _tzinfome(timezone)
-
-
-def detect_timezone():
-  """Try and detect the timezone that Python is currently running in.
-
-  We have a bunch of different methods for trying to figure this out (listed in
-  order they are attempted).
-    * Try TZ environment variable.
-    * Try and find /etc/timezone file (with timezone name).
-    * Try and find /etc/localtime file (with timezone data).
-    * Try and match a TZ to the current dst/offset/shortname.
-
-  Returns:
-    The detected local timezone as a tzinfo object
-
-  Raises:
-    pytz.UnknownTimeZoneError: If it was unable to detect a timezone.
-  """
-  # First we try the TZ variable
-  tz = _detect_timezone_environ()
-  if tz is not None:
-    return tz
-
-  # Second we try /etc/timezone and use the value in that
-  tz = _detect_timezone_etc_timezone()
-  if tz is not None:
-    return tz
-
-  # Next we try and see if something matches the tzinfo in /etc/localtime
-  tz = _detect_timezone_etc_localtime()
-  if tz is not None:
-    return tz
-
-  # Next we try and use a similiar method to what PHP does.
-  # We first try to search on time.tzname, time.timezone, time.daylight to
-  # match a pytz zone.
-  warnings.warn("Had to fall back to worst detection method (the 'PHP' "
-                "method).")
-
-  tz = _detect_timezone_php()
-  if tz is not None:
-    return tz
-
-  raise pytz.UnknownTimeZoneError("Unable to detect your timezone!")
-
-
-def _detect_timezone_environ():
-  if "TZ" in os.environ:
-    try:
-      return pytz.timezone(os.environ["TZ"])
-    except (IOError, pytz.UnknownTimeZoneError):
-      warnings.warn("You provided a TZ environment value (%r) we did not "
-                    "understand!" % os.environ["TZ"])
-
-
-def _detect_timezone_etc_timezone():
-  if os.path.exists("/etc/timezone"):
-    try:
-      tz = file("/etc/timezone").read().strip()
-      try:
-        return pytz.timezone(tz)
-      except (IOError, pytz.UnknownTimeZoneError), ei:
-        warnings.warn("Your /etc/timezone file references a timezone (%r) that"
-                      " is not valid (%r)." % (tz, ei))
-
-    # Problem reading the /etc/timezone file
-    except IOError, eo:
-      warnings.warn("Could not access your /etc/timezone file: %s" % eo)
-
-
-def _detect_timezone_etc_localtime():
-  matches = []
-  if os.path.exists("/etc/localtime"):
-    localtime = pytz.tzfile.build_tzinfo("/etc/localtime",
-                                         file("/etc/localtime"))
-
-    # See if we can find a "Human Name" for this..
-    for tzname in pytz.all_timezones:
-      tz = _tzinfome(tzname)
-
-      if dir(tz) != dir(localtime):
-        continue
-
-      for attrib in dir(tz):
-        # Ignore functions and specials
-        if callable(getattr(tz, attrib)) or attrib.startswith("__"):
-          continue
-
-        # This will always be different
-        if attrib == "zone" or attrib == "_tzinfos":
-          continue
-
-        if getattr(tz, attrib) != getattr(localtime, attrib):
-          break
-
-      # We get here iff break didn't happen, i.e. no meaningful attributes
-      # differ between tz and localtime
-      else:
-        matches.append(tzname)
-
-    if len(matches) == 1:
-      return _tzinfome(matches[0])
-    else:
-      # Warn the person about this!
-      warning = "Could not get a human name for your timezone: "
-      if len(matches) > 1:
-        warning += ("We detected multiple matches for your /etc/localtime. "
-                    "(Matches where %s)" % matches)
-        return _tzinfome(matches[0])
-      else:
-        warning += "We detected no matches for your /etc/localtime."
-      warnings.warn(warning)
-
-      # Register /etc/localtime as the timezone loaded.
-      pytz._tzinfo_cache['/etc/localtime'] = localtime
-      return localtime
-
-
-def _detect_timezone_php():
-  tomatch = (time.tzname[0], time.timezone, time.daylight)
-  now = datetime.datetime.now()
-
-  matches = []
-  for tzname in pytz.all_timezones:
-    try:
-      tz = pytz.timezone(tzname)
-    except IOError:
-      continue
-
-    try:
-      indst = tz.localize(now).timetuple()[-1]
-
-      if tomatch == (tz._tzname, -tz._utcoffset.seconds, indst):
-        matches.append(tzname)
-
-    # pylint: disable-msg=W0704
-    except AttributeError:
-      pass
-
-  if len(matches) > 1:
-    warnings.warn("We detected multiple matches for the timezone, choosing "
-                  "the first %s. (Matches where %s)" % (matches[0], matches))
-    return pytz.timezone(matches[0])
-
-
-class datetime_tz(datetime.datetime):
-  """An extension of the inbuilt datetime adding more functionality.
-
-  The extra functionality includes:
-    * Partial parsing support (IE 2006/02/30 matches %Y/%M/%D %H:%M)
-    * Full integration with pytz (just give it the string of the timezone!)
-    * Proper support for going to/from Unix timestamps (which are in UTC!).
-  """
-  __slots__ = ["is_dst"]
-
-  def __new__(cls, *args, **kw):
-    args = list(args)
-    if not args:
-      raise TypeError("Not enough arguments given.")
-
-    # See if we are given a tzinfo object...
-    tzinfo = None
-    if isinstance(args[-1], (datetime.tzinfo, basestring)):
-      tzinfo = _tzinfome(args.pop(-1))
-    elif kw.get("tzinfo", None) is not None:
-      tzinfo = _tzinfome(kw.pop("tzinfo"))
-
-    # Create a datetime object if we don't have one
-    if isinstance(args[0], datetime.datetime):
-      # Convert the datetime instance to a datetime object.
-      newargs = (list(args[0].timetuple()[0:6]) +
-                 [args[0].microsecond, args[0].tzinfo])
-      dt = datetime.datetime(*newargs)
-
-      if tzinfo is None and dt.tzinfo is None:
-        raise TypeError("Must specify a timezone!")
-
-      if tzinfo is not None and dt.tzinfo is not None:
-        raise TypeError("Can not give a timezone with timezone aware"
-                        " datetime object! (Use localize.)")
-    else:
-      dt = datetime.datetime(*args, **kw)
-
-    if dt.tzinfo is not None:
-      # Re-normalize the dt object
-      dt = dt.tzinfo.normalize(dt)
-
-    else:
-      if tzinfo is None:
-        tzinfo = localtz()
-
-      try:
-        dt = tzinfo.localize(dt, is_dst=None)
-      except pytz.AmbiguousTimeError:
-        is_dst = None
-        if "is_dst" in kw:
-          is_dst = kw.pop("is_dst")
-
-        try:
-          dt = tzinfo.localize(dt, is_dst)
-        except IndexError:
-          raise pytz.AmbiguousTimeError("No such time exists!")
-
-    newargs = list(dt.timetuple()[0:6])+[dt.microsecond, dt.tzinfo]
-    obj = datetime.datetime.__new__(cls, *newargs)
-    obj.is_dst = obj.dst() != datetime.timedelta(0)
-    return obj
-
-  def asdatetime(self, naive=True):
-    """Return this datetime_tz as a datetime object.
-
-    Args:
-      naive: Return *without* any tz info.
-
-    Returns:
-      This datetime_tz as a datetime object.
-    """
-    args = list(self.timetuple()[0:6])+[self.microsecond]
-    if not naive:
-      args.append(self.tzinfo)
-    return datetime.datetime(*args)
-
-  def asdate(self):
-    """Return this datetime_tz as a date object.
-
-    Returns:
-      This datetime_tz as a date object.
-    """
-    return datetime.date(self.year, self.month, self.day)
-
-  def totimestamp(self):
-    """Convert this datetime object back to a unix timestamp.
-
-    The Unix epoch is the time 00:00:00 UTC on January 1, 1970.
-
-    Returns:
-      Unix timestamp.
-    """
-    return calendar.timegm(self.utctimetuple())+1e-6*self.microsecond
-
-  def astimezone(self, tzinfo):
-    """Returns a version of this timestamp converted to the given timezone.
-
-    Args:
-      tzinfo: Either a datetime.tzinfo object or a string (which will be looked
-              up in pytz.
-
-    Returns:
-      A datetime_tz object in the given timezone.
-    """
-    # Assert we are not a naive datetime object
-    assert self.tzinfo is not None
-
-    tzinfo = _tzinfome(tzinfo)
-
-    d = self.asdatetime(naive=False).astimezone(tzinfo)
-    return datetime_tz(d)
-
-  # pylint: disable-msg=C6113
-  def replace(self, **kw):
-    """Return datetime with new specified fields given as arguments.
-
-    For example, dt.replace(days=4) would return a new datetime_tz object with
-    exactly the same as dt but with the days attribute equal to 4.
-
-    Any attribute can be replaced, but tzinfo can not be set to None.
-
-    Args:
-      Any datetime_tz attribute.
-
-    Returns:
-      A datetime_tz object with the attributes replaced.
-
-    Raises:
-      TypeError: If the given replacement is invalid.
-    """
-    if "tzinfo" in kw:
-      if kw["tzinfo"] is None:
-        raise TypeError("Can not remove the timezone use asdatetime()")
-
-    is_dst = None
-    if "is_dst" in kw:
-      is_dst = kw["is_dst"]
-      del kw["is_dst"]
-    else:
-      # Use our own DST setting..
-      is_dst = self.is_dst
-
-    replaced = self.asdatetime().replace(**kw)
-
-    return datetime_tz(replaced, tzinfo=self.tzinfo.zone, is_dst=is_dst)
-
-  # pylint: disable-msg=C6310
-  @classmethod
-  def smartparse(cls, toparse, tzinfo=None):
-    """Method which uses dateutil.parse and extras to try and parse the string.
-
-    Valid dates are found at:
-     http://labix.org/python-dateutil#head-1443e0f14ad5dff07efd465e080d1110920673d8-2
-
-    Other valid formats include:
-      "now" or "today"
-      "yesterday"
-      "tommorrow"
-      "5 minutes ago"
-      "10 hours ago"
-      "10h5m ago"
-      "start of yesterday"
-      "end of tommorrow"
-      "end of 3rd of March"
-
-    Args:
-      toparse: The string to parse.
-      tzinfo: Timezone for the resultant datetime_tz object should be in.
-              (Defaults to your local timezone.)
-
-    Returns:
-      New datetime_tz object.
-
-    Raises:
-      ValueError: If unable to make sense of the input.
-    """
-    # Default for empty fields are:
-    #  year/month/day == now
-    #  hour/minute/second/microsecond == 0
-    toparse = toparse.strip()
-
-    if tzinfo is None:
-      dt = cls.now()
-    else:
-      dt = cls.now(tzinfo)
-
-    default = dt.replace(hour=0, minute=0, second=0, microsecond=0)
-
-    # Remove "start of " and "end of " prefix in the string
-    if toparse.lower().startswith("end of "):
-      toparse = toparse[7:].strip()
-
-      dt += datetime.timedelta(days=1)
-      dt = dt.replace(hour=0, minute=0, second=0, microsecond=0)
-      dt -= datetime.timedelta(microseconds=1)
-
-      default = dt
-
-    elif toparse.lower().startswith("start of "):
-      toparse = toparse[9:].strip()
-
-      dt = dt.replace(hour=0, minute=0, second=0, microsecond=0)
-      default = dt
-
-    # Handle strings with "now", "today", "yesterday", "tomorrow" and "ago".
-    # Need to use lowercase
-    toparselower = toparse.lower()
-
-    if toparselower in ["now", "today"]:
-      pass
-
-    elif toparselower == "yesterday":
-      dt -= datetime.timedelta(days=1)
-
-    elif toparselower == "tommorrow":
-      dt += datetime.timedelta(days=1)
-
-    elif "ago" in toparselower:
-      # Remove the "ago" bit
-      toparselower = toparselower[:-3]
-      # Replace all "a day and an hour" with "1 day 1 hour"
-      toparselower = toparselower.replace("a ", "1 ")
-      toparselower = toparselower.replace("an ", "1 ")
-      toparselower = toparselower.replace(" and ", " ")
-
-      # Match the following
-      # 1 hour ago
-      # 1h ago
-      # 1 h ago
-      # 1 hour ago
-      # 2 hours ago
-      # Same with minutes, seconds, etc.
-
-      tocheck = ("seconds", "minutes", "hours", "days", "weeks", "months",
-                 "years")
-      result = {}
-      for match in re.finditer("([0-9]+)([^0-9]*)", toparselower):
-        amount = int(match.group(1))
-        unit = match.group(2).strip()
-
-        for bit in tocheck:
-          regex = "^([%s]|((%s)s?))$" % (
-              bit[0], bit[:-1])
-
-          bitmatch = re.search(regex, unit)
-          if bitmatch:
-            result[bit] = amount
-            break
-        else:
-          raise ValueError("Was not able to parse date unit %r!" % unit)
-
-      delta = dateutil.relativedelta.relativedelta(**result)
-      dt -= delta
-
-    else:
-      # Handle strings with normal datetime format, use original case.
-      dt = dateutil.parser.parse(toparse, default=default.asdatetime(),
-                                 tzinfos=pytz_abbr.tzinfos)
-      if dt is None:
-        raise ValueError("Was not able to parse date!")
-
-      if dt.tzinfo is pytz_abbr.unknown:
-        dt = dt.replace(tzinfo=None)
-
-      if dt.tzinfo is None:
-        if tzinfo is None:
-          tzinfo = localtz()
-        dt = cls(dt, tzinfo)
-      else:
-        if isinstance(dt.tzinfo, pytz_abbr.tzabbr):
-          abbr = dt.tzinfo
-          dt = dt.replace(tzinfo=None)
-          dt = cls(dt, abbr.zone, is_dst=abbr.dst)
-
-        dt = cls(dt)
-
-    return dt
-
-  @classmethod
-  def utcfromtimestamp(cls, timestamp):
-    """Returns a datetime object of a given timestamp (in UTC)."""
-    obj = datetime.datetime.utcfromtimestamp(timestamp)
-    obj = pytz.utc.localize(obj)
-    return cls(obj)
-
-  @classmethod
-  def fromtimestamp(cls, timestamp):
-    """Returns a datetime object of a given timestamp (in local tz)."""
-    d = cls.utcfromtimestamp(timestamp)
-    return d.astimezone(localtz())
-
-  @classmethod
-  def utcnow(cls):
-    """Return a new datetime representing UTC day and time."""
-    obj = datetime.datetime.utcnow()
-    obj = cls(obj, tzinfo=pytz.utc)
-    return obj
-
-  @classmethod
-  def now(cls, tzinfo=None):
-    """[tz] -> new datetime with tz's local day and time."""
-    obj = cls.utcnow()
-    if tzinfo is None:
-      tzinfo = localtz()
-    return obj.astimezone(tzinfo)
-
-  today = now
-
-  @staticmethod
-  def fromordinal(ordinal):
-    raise SyntaxError("Not enough information to create a datetime_tz object "
-                      "from an ordinal. Please use datetime.date.fromordinal")
-
-
-class iterate(object):
-  """Helpful iterators for working with datetime_tz objects."""
-
-  @staticmethod
-  def between(start, delta, end=None):
-    """Return an iterator between this date till given end point.
-
-    Example usage:
-      >>> d = datetime_tz.smartparse("5 days ago")
-      2008/05/12 11:45
-      >>> for i in d.between(timedelta(days=1), datetime_tz.now()):
-      >>>    print i
-      2008/05/12 11:45
-      2008/05/13 11:45
-      2008/05/14 11:45
-      2008/05/15 11:45
-      2008/05/16 11:45
-
-    Args:
-      start: The date to start at.
-      delta: The interval to iterate with.
-      end: (Optional) Date to end at. If not given the iterator will never
-           terminate.
-
-    Yields:
-      datetime_tz objects.
-    """
-    toyield = start
-    while end is None or toyield < end:
-      yield toyield
-      toyield += delta
-
-  @staticmethod
-  def weeks(start, end=None):
-    """Iterate over the weeks between the given datetime_tzs.
-
-    Args:
-      start: datetime_tz to start from.
-      end: (Optional) Date to end at, if not given the iterator will never
-           terminate.
-
-    Returns:
-      An iterator which generates datetime_tz objects a week apart.
-    """
-    return iterate.between(start, datetime.timedelta(days=7), end)
-
-  @staticmethod
-  def days(start, end=None):
-    """Iterate over the days between the given datetime_tzs.
-
-    Args:
-      start: datetime_tz to start from.
-      end: (Optional) Date to end at, if not given the iterator will never
-           terminate.
-
-    Returns:
-      An iterator which generates datetime_tz objects a day apart.
-    """
-    return iterate.between(start, datetime.timedelta(days=1), end)
-
-  @staticmethod
-  def hours(start, end=None):
-    """Iterate over the hours between the given datetime_tzs.
-
-    Args:
-      start: datetime_tz to start from.
-      end: (Optional) Date to end at, if not given the iterator will never
-           terminate.
-
-    Returns:
-      An iterator which generates datetime_tz objects a hour apart.
-    """
-    return iterate.between(start, datetime.timedelta(hours=1), end)
-
-  @staticmethod
-  def minutes(start, end=None):
-    """Iterate over the minutes between the given datetime_tzs.
-
-    Args:
-      start: datetime_tz to start from.
-      end: (Optional) Date to end at, if not given the iterator will never
-           terminate.
-
-    Returns:
-      An iterator which generates datetime_tz objects a minute apart.
-    """
-    return iterate.between(start, datetime.timedelta(minutes=1), end)
-
-  @staticmethod
-  def seconds(start, end=None):
-    """Iterate over the seconds between the given datetime_tzs.
-
-    Args:
-      start: datetime_tz to start from.
-      end: (Optional) Date to end at, if not given the iterator will never
-           terminate.
-
-    Returns:
-      An iterator which generates datetime_tz objects a second apart.
-    """
-    return iterate.between(start, datetime.timedelta(minutes=1), end)
-
-
-def _wrap_method(name):
-  """Wrap a method.
-
-  Patch a method which might return a datetime.datetime to return a
-  datetime_tz.datetime_tz instead.
-
-  Args:
-    name: The name of the method to patch
-  """
-  method = getattr(datetime.datetime, name)
-
-  # Have to give the second argument as method has no __module__ option.
-  @functools.wraps(method, ("__name__", "__doc__"), ())
-  def wrapper(*args, **kw):
-    r = method(*args, **kw)
-
-    if isinstance(r, datetime.datetime) and not isinstance(r, datetime_tz):
-      r = datetime_tz(r)
-    return r
-
-  setattr(datetime_tz, name, wrapper)
-
-for methodname in ["__add__", "__radd__", "__rsub__", "__sub__", "combine"]:
-
-  # Make sure we have not already got an override for this method
-  assert methodname not in datetime_tz.__dict__
-
-  _wrap_method(methodname)
-
-
-__all__ = ['datetime_tz', 'detect_timezone', 'iterate', 'localtz',
-    'localtz_set', 'timedelta', '_detect_timezone_environ',
-    '_detect_timezone_etc_localtime', '_detect_timezone_etc_timezone',
-    '_detect_timezone_php']

nilmdb/utils/datetime_tz/pytz_abbr.py

@@ -1,230 +0,0 @@
-#!/usr/bin/python2.4
-# -*- coding: utf-8 -*-
-#
-# Copyright 2010 Google Inc. All Rights Reserved.
-#
-
-"""
-Common time zone acronyms/abbreviations for use with the datetime_tz module.
-
-*WARNING*: There are lots of caveats when using this module which are listed
-below.
-
-CAVEAT 1: The acronyms/abbreviations are not globally unique, they are not even
-unique within a region. For example, EST can mean any of,
-  Eastern Standard Time in Australia (which is 10 hour ahead of UTC)
-  Eastern Standard Time in North America (which is 5 hours behind UTC)
-
-Where there are two abbreviations the more popular one will appear in the all
-dictionary, while the less common one will only appear in that countries region
-dictionary. IE If using all, EST will be mapped to Eastern Standard Time in
-North America.
-
-CAVEAT 2: Many of the acronyms don't map to a neat Oslon timezones. For example,
-Eastern European Summer Time (EEDT) is used by many different countries in
-Europe *at different times*! If the acronym does not map neatly to one zone it
-is mapped to the Etc/GMT+-XX Oslon zone. This means that any date manipulations
-can end up with idiot things like summer time in the middle of winter.
-
-CAVEAT 3: The Summer/Standard time difference is really important! For an hour
-each year it is needed to determine which time you are actually talking about.
-    2002-10-27 01:20:00 EST != 2002-10-27 01:20:00 EDT
-"""
-
-import datetime
-import pytz
-import pytz.tzfile
-
-
-class tzabbr(datetime.tzinfo):
-  """A timezone abbreviation.
-
-  *WARNING*: This is not a tzinfo implementation! Trying to use this as tzinfo
-  object will result in failure.  We inherit from datetime.tzinfo so we can get
-  through the dateutil checks.
-  """
-  pass
-
-
-# A "marker" tzinfo object which is used to signify an unknown timezone.
-unknown = datetime.tzinfo(0)
-
-
-regions = {'all': {}, 'military': {}}
-# Create a special alias for the all and military regions
-all = regions['all']
-military = regions['military']
-
-
-def tzabbr_register(abbr, name, region, zone, dst):
-  """Register a new timezone abbreviation in the global registry.
-
-  If another abbreviation with the same name has already been registered it new
-  abbreviation will only be registered in region specific dictionary.
-  """
-  newabbr = tzabbr()
-  newabbr.abbr = abbr
-  newabbr.name = name
-  newabbr.region = region
-  newabbr.zone = zone
-  newabbr.dst = dst
-
-  if abbr not in all:
-    all[abbr] = newabbr
-
-  if not region in regions:
-    regions[region] = {}
-
-  assert abbr not in regions[region]
-  regions[region][abbr] = newabbr
-
-
-def tzinfos_create(use_region):
-  abbrs = regions[use_region]
-
-  def tzinfos(abbr, offset):
-    if abbr:
-      if abbr in abbrs:
-        result = abbrs[abbr]
-        if offset:
-          # FIXME: Check the offset matches the abbreviation we just selected.
-          pass
-        return result
-      else:
-        raise ValueError, "Unknown timezone found %s" % abbr
-    if offset == 0:
-      return pytz.utc
-    if offset:
-      return pytz.FixedOffset(offset/60)
-    return unknown
-
-  return tzinfos
-
-
-# Create a special alias for the all tzinfos
-tzinfos = tzinfos_create('all')
-
-
-# Create the abbreviations.
-# *WARNING*: Order matters!
-tzabbr_register("A", u"Alpha Time Zone", u"Military", "Etc/GMT-1", False)
-tzabbr_register("ACDT", u"Australian Central Daylight Time", u"Australia",
-                "Australia/Adelaide", True)
-tzabbr_register("ACST", u"Australian Central Standard Time", u"Australia",
-                "Australia/Adelaide", False)
-tzabbr_register("ADT", u"Atlantic Daylight Time", u"North America",
-                "America/Halifax", True)
-tzabbr_register("AEDT", u"Australian Eastern Daylight Time", u"Australia",
-                "Australia/Sydney", True)
-tzabbr_register("AEST", u"Australian Eastern Standard Time", u"Australia",
-                "Australia/Sydney", False)
-tzabbr_register("AKDT", u"Alaska Daylight Time", u"North America",
-                "US/Alaska", True)
-tzabbr_register("AKST", u"Alaska Standard Time", u"North America",
-                "US/Alaska", False)
-tzabbr_register("AST", u"Atlantic Standard Time", u"North America",
-                "America/Halifax", False)
-tzabbr_register("AWDT", u"Australian Western Daylight Time", u"Australia",
-                "Australia/West", True)
-tzabbr_register("AWST", u"Australian Western Standard Time", u"Australia",
-                "Australia/West", False)
-tzabbr_register("B", u"Bravo Time Zone", u"Military", "Etc/GMT-2", False)
-tzabbr_register("BST", u"British Summer Time", u"Europe", "Europe/London", True)
-tzabbr_register("C", u"Charlie Time Zone", u"Military", "Etc/GMT-2", False)
-tzabbr_register("CDT", u"Central Daylight Time", u"North America",
-                "US/Central", True)
-tzabbr_register("CEDT", u"Central European Daylight Time", u"Europe",
-                "Etc/GMT+2", True)
-tzabbr_register("CEST", u"Central European Summer Time", u"Europe",
-                "Etc/GMT+2", True)
-tzabbr_register("CET", u"Central European Time", u"Europe", "Etc/GMT+1", False)
-tzabbr_register("CST", u"Central Standard Time", u"North America",
-                "US/Central", False)
-tzabbr_register("CXT", u"Christmas Island Time", u"Australia",
-                "Indian/Christmas", False)
-tzabbr_register("D", u"Delta Time Zone", u"Military", "Etc/GMT-2", False)
-tzabbr_register("E", u"Echo Time Zone", u"Military", "Etc/GMT-2", False)
-tzabbr_register("EDT", u"Eastern Daylight Time", u"North America",
-                "US/Eastern", True)
-tzabbr_register("EEDT", u"Eastern European Daylight Time", u"Europe",
-                "Etc/GMT+3", True)
-tzabbr_register("EEST", u"Eastern European Summer Time", u"Europe",
-                "Etc/GMT+3", True)
-tzabbr_register("EET", u"Eastern European Time", u"Europe", "Etc/GMT+2", False)
-tzabbr_register("EST", u"Eastern Standard Time", u"North America",
-                "US/Eastern", False)
-tzabbr_register("F", u"Foxtrot Time Zone", u"Military", "Etc/GMT-6", False)
-tzabbr_register("G", u"Golf Time Zone", u"Military", "Etc/GMT-7", False)
-tzabbr_register("GMT", u"Greenwich Mean Time", u"Europe", pytz.utc, False)
-tzabbr_register("H", u"Hotel Time Zone", u"Military", "Etc/GMT-8", False)
-#tzabbr_register("HAA", u"Heure Avancée de l'Atlantique", u"North America", u"UTC - 3 hours")
-#tzabbr_register("HAC", u"Heure Avancée du Centre", u"North America", u"UTC - 5 hours")
-tzabbr_register("HADT", u"Hawaii-Aleutian Daylight Time", u"North America",
-                "Pacific/Honolulu", True)
-#tzabbr_register("HAE", u"Heure Avancée de l'Est", u"North America", u"UTC - 4 hours")
-#tzabbr_register("HAP", u"Heure Avancée du Pacifique", u"North America", u"UTC - 7 hours")
-#tzabbr_register("HAR", u"Heure Avancée des Rocheuses", u"North America", u"UTC - 6 hours")
-tzabbr_register("HAST", u"Hawaii-Aleutian Standard Time", u"North America",
-                "Pacific/Honolulu", False)
-#tzabbr_register("HAT", u"Heure Avancée de Terre-Neuve", u"North America", u"UTC - 2:30 hours")
-#tzabbr_register("HAY", u"Heure Avancée du Yukon", u"North America", u"UTC - 8 hours")
-tzabbr_register("HDT", u"Hawaii Daylight Time", u"North America",
-                "Pacific/Honolulu", True)
-#tzabbr_register("HNA", u"Heure Normale de l'Atlantique", u"North America", u"UTC - 4 hours")
-#tzabbr_register("HNC", u"Heure Normale du Centre", u"North America", u"UTC - 6 hours")
-#tzabbr_register("HNE", u"Heure Normale de l'Est", u"North America", u"UTC - 5 hours")
-#tzabbr_register("HNP", u"Heure Normale du Pacifique", u"North America", u"UTC - 8 hours")
-#tzabbr_register("HNR", u"Heure Normale des Rocheuses", u"North America", u"UTC - 7 hours")
-#tzabbr_register("HNT", u"Heure Normale de Terre-Neuve", u"North America", u"UTC - 3:30 hours")
-#tzabbr_register("HNY", u"Heure Normale du Yukon", u"North America", u"UTC - 9 hours")
-tzabbr_register("HST", u"Hawaii Standard Time", u"North America",
-                "Pacific/Honolulu", False)
-tzabbr_register("I", u"India Time Zone", u"Military", "Etc/GMT-9", False)
-tzabbr_register("IST", u"Irish Summer Time", u"Europe", "Europe/Dublin", True)
-tzabbr_register("K", u"Kilo Time Zone", u"Military", "Etc/GMT-10", False)
-tzabbr_register("L", u"Lima Time Zone", u"Military", "Etc/GMT-11", False)
-tzabbr_register("M", u"Mike Time Zone", u"Military", "Etc/GMT-12", False)
-tzabbr_register("MDT", u"Mountain Daylight Time", u"North America",
-                "US/Mountain", True)
-#tzabbr_register("MESZ", u"Mitteleuroäische Sommerzeit", u"Europe", u"UTC + 2 hours")
-#tzabbr_register("MEZ", u"Mitteleuropäische Zeit", u"Europe", u"UTC + 1 hour")
-tzabbr_register("MSD", u"Moscow Daylight Time", u"Europe",
-                "Europe/Moscow", True)
-tzabbr_register("MSK", u"Moscow Standard Time", u"Europe",
-                "Europe/Moscow", False)
-tzabbr_register("MST", u"Mountain Standard Time", u"North America",
-                "US/Mountain", False)
-tzabbr_register("N", u"November Time Zone", u"Military", "Etc/GMT+1", False)
-tzabbr_register("NDT", u"Newfoundland Daylight Time", u"North America",
-                "America/St_Johns", True)
-tzabbr_register("NFT", u"Norfolk (Island) Time", u"Australia",
-                "Pacific/Norfolk", False)
-tzabbr_register("NST", u"Newfoundland Standard Time", u"North America",
-                "America/St_Johns", False)
-tzabbr_register("O", u"Oscar Time Zone", u"Military", "Etc/GMT+2", False)
-tzabbr_register("P", u"Papa Time Zone", u"Military", "Etc/GMT+3", False)
-tzabbr_register("PDT", u"Pacific Daylight Time", u"North America",
-                "US/Pacific", True)
-tzabbr_register("PST", u"Pacific Standard Time", u"North America",
-                "US/Pacific", False)
-tzabbr_register("Q", u"Quebec Time Zone", u"Military", "Etc/GMT+4", False)
-tzabbr_register("R", u"Romeo Time Zone", u"Military", "Etc/GMT+5", False)
-tzabbr_register("S", u"Sierra Time Zone", u"Military", "Etc/GMT+6", False)
-tzabbr_register("T", u"Tango Time Zone", u"Military", "Etc/GMT+7", False)
-tzabbr_register("U", u"Uniform Time Zone", u"Military", "Etc/GMT+8", False)
-tzabbr_register("UTC", u"Coordinated Universal Time", u"Europe",
-                pytz.utc, False)
-tzabbr_register("V", u"Victor Time Zone", u"Military", "Etc/GMT+9", False)
-tzabbr_register("W", u"Whiskey Time Zone", u"Military", "Etc/GMT+10", False)
-tzabbr_register("WDT", u"Western Daylight Time", u"Australia",
-                "Australia/West", True)
-tzabbr_register("WEDT", u"Western European Daylight Time", u"Europe",
-                "Etc/GMT+1", True)
-tzabbr_register("WEST", u"Western European Summer Time", u"Europe",
-                "Etc/GMT+1", True)
-tzabbr_register("WET", u"Western European Time", u"Europe", pytz.utc, False)
-tzabbr_register("WST", u"Western Standard Time", u"Australia",
-                "Australia/West", False)
-tzabbr_register("X", u"X-ray Time Zone", u"Military", "Etc/GMT+11", False)
-tzabbr_register("Y", u"Yankee Time Zone", u"Military", "Etc/GMT+12", False)
-tzabbr_register("Z", u"Zulu Time Zone", u"Military", pytz.utc, False)

nilmdb/utils/diskusage.py

@@ -1,25 +0,0 @@
-import os
-from math import log
-
-def human_size(num):
-    """Human friendly file size"""
-    unit_list = zip(['bytes', 'kiB', 'MiB', 'GiB', 'TiB'], [0, 0, 1, 2, 2])
-    if num > 1:
-        exponent = min(int(log(num, 1024)), len(unit_list) - 1)
-        quotient = float(num) / 1024**exponent
-        unit, num_decimals = unit_list[exponent]
-        format_string = '{:.%sf} {}' % (num_decimals)
-        return format_string.format(quotient, unit)
-    if num == 0: # pragma: no cover
-        return '0 bytes'
-    if num == 1: # pragma: no cover
-        return '1 byte'
-
-def du(path):
-    """Like du -sb, returns total size of path in bytes."""
-    size = os.path.getsize(path)
-    if os.path.isdir(path):
-        for thisfile in os.listdir(path):
-            filepath = os.path.join(path, thisfile)
-            size += du(filepath)
-    return size

nilmdb/utils/fallocate.py

@@ -1,49 +0,0 @@
-# Implementation of hole punching via fallocate, if the OS
-# and filesystem support it.
-
-try:
-    import os
-    import ctypes
-    import ctypes.util
-
-    def make_fallocate():
-        libc_name = ctypes.util.find_library('c')
-        libc = ctypes.CDLL(libc_name, use_errno=True)
-
-        _fallocate = libc.fallocate
-        _fallocate.restype = ctypes.c_int
-        _fallocate.argtypes = [ ctypes.c_int, ctypes.c_int,
-                                ctypes.c_int64, ctypes.c_int64 ]
-
-        del libc
-        del libc_name
-
-        def fallocate(fd, mode, offset, len_):
-            res = _fallocate(fd, mode, offset, len_)
-            if res != 0: # pragma: no cover
-                errno = ctypes.get_errno()
-                raise IOError(errno, os.strerror(errno))
-        return fallocate
-
-    fallocate = make_fallocate()
-    del make_fallocate
-except Exception: # pragma: no cover
-    fallocate = None
-
-FALLOC_FL_KEEP_SIZE = 0x01
-FALLOC_FL_PUNCH_HOLE = 0x02
-
-def punch_hole(filename, offset, length, ignore_errors = True):
-    """Punch a hole in the file.  This isn't well supported, so errors
-    are ignored by default."""
-    try:
-        if fallocate is None: # pragma: no cover
-            raise IOError("fallocate not available")
-        with open(filename, "r+") as f:
-            fallocate(f.fileno(),
-                      FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE,
-                      offset, length)
-    except IOError: # pragma: no cover
-        if ignore_errors:
-            return
-        raise

nilmdb/utils/iterator.py

@@ -1,36 +0,0 @@
-# Misc iterator tools
-
-# Iterator merging, based on http://code.activestate.com/recipes/491285/
-import heapq
-def imerge(*iterables):
-    '''Merge multiple sorted inputs into a single sorted output.
-
-    Equivalent to:  sorted(itertools.chain(*iterables))
-
-    >>> list(imerge([1,3,5,7], [0,2,4,8], [5,10,15,20], [], [25]))
-    [0, 1, 2, 3, 4, 5, 5, 7, 8, 10, 15, 20, 25]
-
-    '''
-    heappop, siftup, _Stop = heapq.heappop, heapq._siftup, StopIteration
-
-    h = []
-    h_append = h.append
-    for it in map(iter, iterables):
-        try:
-            next = it.next
-            h_append([next(), next])
-        except _Stop:
-            pass
-    heapq.heapify(h)
-
-    while 1:
-        try:
-            while 1:
-                v, next = s = h[0]      # raises IndexError when h is empty
-                yield v
-                s[0] = next()           # raises StopIteration when exhausted
-                siftup(h, 0)            # restore heap condition
-        except _Stop:
-            heappop(h)                  # remove empty iterator
-        except IndexError:
-            return

nilmdb/utils/iteratorizer.py

@@ -1,100 +0,0 @@
-import Queue
-import threading
-import sys
-import contextlib
-
-# This file provides a context manager that converts a function
-# that takes a callback into a generator that returns an iterable.
-# This is done by running the function in a new thread.
-
-# Based partially on http://stackoverflow.com/questions/9968592/
-
-class IteratorizerThread(threading.Thread):
-    def __init__(self, queue, function, curl_hack):
-        """
-        function: function to execute, which takes the
-        callback (provided by this class) as an argument
-        """
-        threading.Thread.__init__(self)
-        self.name = "Iteratorizer-" + function.__name__ + "-" + self.name
-        self.function = function
-        self.queue = queue
-        self.die = False
-        self.curl_hack = curl_hack
-
-    def callback(self, data):
-        try:
-            if self.die:
-                raise Exception() # trigger termination
-            self.queue.put((1, data))
-        except:
-            if self.curl_hack:
-                # We can't raise exceptions, because the pycurl
-                # extension module will unconditionally print the
-                # exception itself, and not pass it up to the caller.
-                # Instead, just return a value that tells curl to
-                # abort.  (-1 would be best, in case we were given 0
-                # bytes, but the extension doesn't support that).
-                self.queue.put((2, sys.exc_info()))
-                return 0
-            raise
-
-    def run(self):
-        try:
-            result = self.function(self.callback)
-        except:
-            self.queue.put((2, sys.exc_info()))
-        else:
-            self.queue.put((0, result))
-
-@contextlib.contextmanager
-def Iteratorizer(function, curl_hack = False):
-    """
-    Context manager that takes a function expecting a callback,
-    and provides an iterable that yields the values passed to that
-    callback instead.
-
-    function: function to execute, which takes a callback
-    (provided by this context manager) as an argument
-
-        with iteratorizer(func) as it:
-            for i in it:
-                print 'callback was passed:', i
-        print 'function returned:', it.retval
-    """
-    queue = Queue.Queue(maxsize = 1)
-    thread = IteratorizerThread(queue, function, curl_hack)
-    thread.daemon = True
-    thread.start()
-
-    class iteratorizer_gen(object):
-        def __init__(self, queue):
-            self.queue = queue
-            self.retval = None
-
-        def __iter__(self):
-            return self
-
-        def next(self):
-            (typ, data) = self.queue.get()
-            if typ == 0:
-                # function has returned
-                self.retval = data
-                raise StopIteration
-            elif typ == 1:
-                # data is available
-                return data
-            else:
-                # callback raised an exception
-                raise data[0], data[1], data[2]
-
-    try:
-        yield iteratorizer_gen(queue)
-    finally:
-        # Ask the thread to die, if it's still running.
-        thread.die = True
-        while thread.isAlive():
-            try:
-                queue.get(True, 0.01)
-            except: # pragma: no cover
-                pass

nilmdb/utils/lrucache.py

@@ -1,76 +0,0 @@
-# Memoize a function's return value with a least-recently-used cache
-# Based on:
-#   http://code.activestate.com/recipes/498245-lru-and-lfu-cache-decorators/
-# with added 'destructor' functionality.
-
-import collections
-import decorator
-
-def lru_cache(size = 10, onremove = None, keys = slice(None)):
-    """Least-recently-used cache decorator.
-
-    @lru_cache(size = 10, onevict = None)
-    def f(...):
-        pass
-
-    Given a function and arguments, memoize its return value.  Up to
-    'size' elements are cached.  'keys' is a slice object that
-    represents which arguments are used as the cache key.
-
-    When evicting a value from the cache, call the function
-    'onremove' with the value that's being evicted.
-
-    Call f.cache_remove(...) to evict the cache entry with the given
-    arguments.  Call f.cache_remove_all() to evict all entries.
-    f.cache_hits and f.cache_misses give statistics.
-    """
-
-    def decorate(func):
-        cache = collections.OrderedDict()	# order: least- to most-recent
-
-        def evict(value):
-            if onremove:
-                onremove(value)
-
-        def wrapper(orig, *args, **kwargs):
-            if kwargs:
-                raise NotImplementedError("kwargs not supported")
-            key = args[keys]
-            try:
-                value = cache.pop(key)
-                orig.cache_hits += 1
-            except KeyError:
-                value = orig(*args)
-                orig.cache_misses += 1
-                if len(cache) >= size:
-                    evict(cache.popitem(0)[1])	# evict LRU cache entry
-            cache[key] = value              	# (re-)insert this key at end
-            return value
-
-        def cache_remove(*args):
-            """Remove the described key from this cache, if present."""
-            key = args
-            if key in cache:
-                evict(cache.pop(key))
-            else:
-                if len(cache) > 0 and len(args) != len(cache.iterkeys().next()):
-                    raise KeyError("trying to remove from LRU cache, but "
-                                   "number of arguments doesn't match the "
-                                   "cache key length")
-
-        def cache_remove_all():
-            for key in cache:
-                evict(cache.pop(key))
-
-        def cache_info():
-            return (func.cache_hits, func.cache_misses)
-
-        new = decorator.decorator(wrapper, func)
-        func.cache_hits = 0
-        func.cache_misses = 0
-        new.cache_info = cache_info
-        new.cache_remove = cache_remove
-        new.cache_remove_all = cache_remove_all
-        return new
-
-    return decorate

nilmdb/utils/mustclose.py

@@ -1,61 +0,0 @@
-from nilmdb.utils.printf import *
-import sys
-import inspect
-import decorator
-
-def must_close(errorfile = sys.stderr, wrap_verify = False):
-    """Class decorator that warns on 'errorfile' at deletion time if
-    the class's close() member wasn't called.
-
-    If 'wrap_verify' is True, every class method is wrapped with a
-    verifier that will raise AssertionError if the .close() method has
-    already been called."""
-    def class_decorator(cls):
-
-        def wrap_class_method(wrapper):
-            try:
-                orig = getattr(cls, wrapper.__name__).im_func
-            except:
-                orig = lambda x: None
-            setattr(cls, wrapper.__name__, decorator.decorator(wrapper, orig))
-
-        @wrap_class_method
-        def __init__(orig, self, *args, **kwargs):
-            ret = orig(self, *args, **kwargs)
-            self.__dict__["_must_close"] = True
-            self.__dict__["_must_close_initialized"] = True
-            return ret
-
-        @wrap_class_method
-        def __del__(orig, self, *args, **kwargs):
-            if "_must_close" in self.__dict__:
-                fprintf(errorfile, "error: %s.close() wasn't called!\n",
-                        self.__class__.__name__)
-            return orig(self, *args, **kwargs)
-
-        @wrap_class_method
-        def close(orig, self, *args, **kwargs):
-            if "_must_close" in self.__dict__:
-                del self._must_close
-            return orig(self, *args, **kwargs)
-
-        # Optionally wrap all other functions
-        def verifier(orig, self, *args, **kwargs):
-            if ("_must_close" not in self.__dict__ and
-                "_must_close_initialized" in self.__dict__):
-                raise AssertionError("called " + str(orig) + " after close")
-            return orig(self, *args, **kwargs)
-        if wrap_verify:
-            for (name, method) in inspect.getmembers(cls, inspect.ismethod):
-                # Skip class methods
-                if method.__self__ is not None:
-                    continue
-                # Skip some methods
-                if name in [ "__del__", "__init__" ]:
-                    continue
-                # Set up wrapper
-                setattr(cls, name, decorator.decorator(verifier,
-                                                       method.im_func))
-
-        return cls
-    return class_decorator

nilmdb/utils/printf.py

@@ -1,9 +0,0 @@
-"""printf, fprintf, sprintf"""
-
-from __future__ import print_function
-def printf(_str, *args):
-    print(_str % args, end='')
-def fprintf(_file, _str, *args):
-    print(_str % args, end='', file=_file)
-def sprintf(_str, *args):
-    return (_str % args)

nilmdb/utils/serializer.py

@@ -1,109 +0,0 @@
-import Queue
-import threading
-import sys
-import decorator
-import inspect
-import types
-import functools
-
-# This file provides a class that will wrap an object and serialize
-# all calls to its methods.  All calls to that object will be queued
-# and executed from a single thread, regardless of which thread makes
-# the call.
-
-# Based partially on http://stackoverflow.com/questions/2642515/
-
-class SerializerThread(threading.Thread):
-    """Thread that retrieves call information from the queue, makes the
-    call, and returns the results."""
-    def __init__(self, classname, call_queue):
-        threading.Thread.__init__(self)
-        self.name = "Serializer-" + classname + "-" + self.name
-        self.call_queue = call_queue
-
-    def run(self):
-        while True:
-            result_queue, func, args, kwargs = self.call_queue.get()
-            # Terminate if result_queue is None
-            if result_queue is None:
-                return
-            exception = None
-            result = None
-            try:
-                result = func(*args, **kwargs) # wrapped
-            except:
-                exception = sys.exc_info()
-            # Ensure we delete these before returning a result, so
-            # we don't unncessarily hold onto a reference while
-            # we're waiting for the next call.
-            del func, args, kwargs
-            result_queue.put((exception, result))
-            del exception, result
-
-def serializer_proxy(obj_or_type):
-    """Wrap the given object or type in a SerializerObjectProxy.
-
-    Returns a SerializerObjectProxy object that proxies all method
-    calls to the object, as well as attribute retrievals.
-
-    The proxied requests, including instantiation, are performed in a
-    single thread and serialized between caller threads.
-    """
-    class SerializerCallProxy(object):
-        def __init__(self, call_queue, func, objectproxy):
-            self.call_queue = call_queue
-            self.func = func
-            # Need to hold a reference to object proxy so it doesn't
-            # go away (and kill the thread) until after get called.
-            self.objectproxy = objectproxy
-        def __call__(self, *args, **kwargs):
-            result_queue = Queue.Queue()
-            self.call_queue.put((result_queue, self.func, args, kwargs))
-            ( exc_info, result ) = result_queue.get()
-            if exc_info is None:
-                return result
-            else:
-                raise exc_info[0], exc_info[1], exc_info[2]
-
-    class SerializerObjectProxy(object):
-        def __init__(self, obj_or_type, *args, **kwargs):
-            self.__object = obj_or_type
-            try:
-                if type(obj_or_type) in (types.TypeType, types.ClassType):
-                    classname = obj_or_type.__name__
-                else:
-                    classname = obj_or_type.__class__.__name__
-            except AttributeError: # pragma: no cover
-                classname = "???"
-            self.__call_queue = Queue.Queue()
-            self.__thread = SerializerThread(classname, self.__call_queue)
-            self.__thread.daemon = True
-            self.__thread.start()
-            self._thread_safe = True
-
-        def __getattr__(self, key):
-            if key.startswith("_SerializerObjectProxy__"): # pragma: no cover
-                raise AttributeError
-            attr = getattr(self.__object, key)
-            if not callable(attr):
-                getter = SerializerCallProxy(self.__call_queue, getattr, self)
-                return getter(self.__object, key)
-            r = SerializerCallProxy(self.__call_queue, attr, self)
-            return r
-
-        def __call__(self, *args, **kwargs):
-            """Call this to instantiate the type, if a type was passed
-            to serializer_proxy.  Otherwise, pass the call through."""
-            ret = SerializerCallProxy(self.__call_queue,
-                                      self.__object, self)(*args, **kwargs)
-            if type(self.__object) in (types.TypeType, types.ClassType):
-                # Instantiation
-                self.__object = ret
-                return self
-            return ret
-
-        def __del__(self):
-            self.__call_queue.put((None, None, None, None))
-            self.__thread.join()
-
-    return SerializerObjectProxy(obj_or_type)

nilmdb/utils/threadsafety.py

@@ -1,109 +0,0 @@
-from nilmdb.utils.printf import *
-import threading
-import warnings
-import types
-
-def verify_proxy(obj_or_type, exception = False, check_thread = True,
-                 check_concurrent = True):
-    """Wrap the given object or type in a VerifyObjectProxy.
-
-    Returns a VerifyObjectProxy that proxies all method calls to the
-    given object, as well as attribute retrievals.
-
-    When calling methods, the following checks are performed.  If
-    exception is True, an exception is raised.  Otherwise, a warning
-    is printed.
-
-    check_thread = True     # Warn/fail if two different threads call methods.
-    check_concurrent = True # Warn/fail if two functions are concurrently
-                            # run through this proxy
-    """
-    class Namespace(object):
-        pass
-    class VerifyCallProxy(object):
-        def __init__(self, func, parent_namespace):
-            self.func = func
-            self.parent_namespace = parent_namespace
-
-        def __call__(self, *args, **kwargs):
-            p = self.parent_namespace
-            this = threading.current_thread()
-            try:
-                callee = self.func.__name__
-            except AttributeError:
-                callee = "???"
-
-            if p.thread is None:
-                p.thread = this
-                p.thread_callee = callee
-
-            if check_thread and p.thread != this:
-                err = sprintf("unsafe threading: %s called %s.%s,"
-                              " but %s called %s.%s",
-                              p.thread.name, p.classname, p.thread_callee,
-                              this.name, p.classname, callee)
-                if exception:
-                    raise AssertionError(err)
-                else: # pragma: no cover
-                    warnings.warn(err)
-
-            need_concur_unlock = False
-            if check_concurrent:
-                if p.concur_lock.acquire(False) == False:
-                    err = sprintf("unsafe concurrency: %s called %s.%s "
-                                  "while %s is still in %s.%s",
-                                  this.name, p.classname, callee,
-                                  p.concur_tname, p.classname, p.concur_callee)
-                    if exception:
-                        raise AssertionError(err)
-                    else: # pragma: no cover
-                        warnings.warn(err)
-                else:
-                    p.concur_tname = this.name
-                    p.concur_callee = callee
-                    need_concur_unlock = True
-
-            try:
-                ret = self.func(*args, **kwargs)
-            finally:
-                if need_concur_unlock:
-                    p.concur_lock.release()
-            return ret
-
-    class VerifyObjectProxy(object):
-        def __init__(self, obj_or_type, *args, **kwargs):
-            p = Namespace()
-            self.__ns = p
-            p.thread = None
-            p.thread_callee = None
-            p.concur_lock = threading.Lock()
-            p.concur_tname = None
-            p.concur_callee = None
-            self.__obj = obj_or_type
-            try:
-                if type(obj_or_type) in (types.TypeType, types.ClassType):
-                    p.classname = self.__obj.__name__
-                else:
-                    p.classname = self.__obj.__class__.__name__
-            except AttributeError: # pragma: no cover
-                p.classname = "???"
-
-        def __getattr__(self, key):
-            if key.startswith("_VerifyObjectProxy__"): # pragma: no cover
-                raise AttributeError
-            attr = getattr(self.__obj, key)
-            if not callable(attr):
-                return VerifyCallProxy(getattr, self.__ns)(self.__obj, key)
-            return VerifyCallProxy(attr, self.__ns)
-
-        def __call__(self, *args, **kwargs):
-            """Call this to instantiate the type, if a type was passed
-            to verify_proxy.  Otherwise, pass the call through."""
-            ret = VerifyCallProxy(self.__obj, self.__ns)(*args, **kwargs)
-            if type(self.__obj) in (types.TypeType, types.ClassType):
-                # Instantiation
-                self.__obj = ret
-                return self
-            return ret
-
-    return VerifyObjectProxy(obj_or_type)

nilmdb/utils/time.py

@@ -1,121 +0,0 @@
-from nilmdb.utils import datetime_tz
-import re
-
-# Range
-min_timestamp = (-2**63)
-max_timestamp = (2**62 - 1)
-
-# Smallest representable step
-epsilon = 1
-
-def string_to_timestamp(str):
-    """Convert a string that represents an integer number of microseconds
-    since epoch."""
-    try:
-        # Parse a string like "1234567890123456" and return an integer
-        return int(str)
-    except ValueError:
-        # Try parsing as a float, in case it's "1234567890123456.0"
-        return int(round(float(str)))
-
-def timestamp_to_string(timestamp):
-    """Convert a timestamp (integer microseconds since epoch) to a string"""
-    if isinstance(timestamp, float):
-        return str(int(round(timestamp)))
-    else:
-        return str(timestamp)
-
-def timestamp_to_human(timestamp):
-    """Convert a timestamp (integer microseconds since epoch) to a
-    human-readable string, using the local timezone for display
-    (e.g. from the TZ env var)."""
-    dt = datetime_tz.datetime_tz.fromtimestamp(timestamp_to_unix(timestamp))
-    return dt.strftime("%a, %d %b %Y %H:%M:%S.%f %z")
-
-def unix_to_timestamp(unix):
-    """Convert a Unix timestamp (floating point seconds since epoch)
-    into a NILM timestamp (integer microseconds since epoch)"""
-    return int(round(unix * 1e6))
-
-def timestamp_to_unix(timestamp):
-    """Convert a NILM timestamp (integer microseconds since epoch)
-    into a Unix timestamp (floating point seconds since epoch)"""
-    return timestamp / 1e6
-timestamp_to_seconds = timestamp_to_unix
-
-def rate_to_period(hz, cycles = 1):
-    """Convert a rate (in Hz) to a period (in timestamp units).
-    Returns an integer."""
-    period = unix_to_timestamp(cycles) / float(hz)
-    return int(round(period))
-
-def parse_time(toparse):
-    """
-    Parse a free-form time string and return a nilmdb timestamp
-    (integer seconds since epoch).  If the string doesn't contain a
-    timestamp, the current local timezone is assumed (e.g. from the TZ
-    env var).
-    """
-    # If string isn't "now" and doesn't contain at least 4 digits,
-    # consider it invalid.  smartparse might otherwise accept
-    # empty strings and strings with just separators.
-    if toparse != "now" and len(re.findall(r"\d", toparse)) < 4:
-        raise ValueError("not enough digits for a timestamp")
-
-    # Try to just parse the time as given
-    try:
-        return unix_to_timestamp(datetime_tz.datetime_tz.
-                                 smartparse(toparse).totimestamp())
-    except (ValueError, OverflowError):
-        pass
-
-    # If it starts with @, treat it as a NILM timestamp
-    # (integer microseconds since epoch)
-    try:
-        if toparse[0] == '@':
-            return int(toparse[1:])
-    except (ValueError, KeyError):
-        pass
-
-    # If it's parseable as a float, treat it as a Unix or NILM
-    # timestamp based on its range.
-    try:
-        val = float(toparse)
-        # range is from about year 2001 - 2128
-        if val > 1e9 and val < 5e9:
-            return unix_to_timestamp(val)
-        if val > 1e15 and val < 5e15:
-            return val
-    except ValueError:
-        pass
-
-    # Try to extract a substring in a condensed format that we expect
-    # to see in a filename or header comment
-    res = re.search(r"(^|[^\d])("            # non-numeric or SOL
-                    r"(199\d|2\d\d\d)"       # year
-                    r"[-/]?"                 # separator
-                    r"(0[1-9]|1[012])"       # month
-                    r"[-/]?"                 # separator
-                    r"([012]\d|3[01])"       # day
-                    r"[-T ]?"                # separator
-                    r"([01]\d|2[0-3])"       # hour
-                    r"[:]?"                  # separator
-                    r"([0-5]\d)"             # minute
-                    r"[:]?"                  # separator
-                    r"([0-5]\d)?"            # second
-                    r"([-+]\d\d\d\d)?"       # timezone
-                    r")", toparse)
-    if res is not None:
-        try:
-            return unix_to_timestamp(datetime_tz.datetime_tz.
-                                     smartparse(res.group(2)).totimestamp())
-        except ValueError:
-            pass
-
-    # Could also try to successively parse substrings, but let's
-    # just give up for now.
-    raise ValueError("unable to parse timestamp")
-
-def now():
-    """Return current timestamp"""
-    return unix_to_timestamp(datetime_tz.datetime_tz.utcnow().totimestamp())

nilmdb/utils/timer.py

@@ -1,23 +0,0 @@
-# -*- coding: utf-8 -*-
-
-# Simple timer to time a block of code, for optimization debugging
-# use like:
-#   with nilmdb.utils.Timer("flush"):
-#       foo.flush()
-
-from __future__ import print_function
-from __future__ import absolute_import
-import contextlib
-import time
-
-@contextlib.contextmanager
-def Timer(name = None, tosyslog = False):
-    start = time.time()
-    yield
-    elapsed = int((time.time() - start) * 1000)
-    msg = (name or 'elapsed') + ": " + str(elapsed) + " ms"
-    if tosyslog: # pragma: no cover
-        import syslog
-        syslog.syslog(msg)
-    else:
-        print(msg)

nilmdb/utils/timestamper.py

@@ -1,93 +0,0 @@
-"""File-like objects that add timestamps to the input lines"""
-
-from nilmdb.utils.printf import *
-import nilmdb.utils.time
-
-class Timestamper(object):
-    """A file-like object that adds timestamps to lines of an input file."""
-    def __init__(self, infile, ts_iter):
-        """file: filename, or another file-like object
-           ts_iter: iterator that returns a timestamp string for
-           each line of the file"""
-        if isinstance(infile, basestring):
-            self.file = open(infile, "r")
-        else:
-            self.file = infile
-        self.ts_iter = ts_iter
-
-    def close(self):
-        self.file.close()
-
-    def readline(self, *args):
-        while True:
-            line = self.file.readline(*args)
-            if not line:
-                return ""
-            if line[0] == '#':
-                continue
-            break
-        try:
-            return self.ts_iter.next() + line
-        except StopIteration:
-            return ""
-
-    def readlines(self, size = None):
-        out = ""
-        while True:
-            line = self.readline()
-            out += line
-            if not line or (size and len(out) >= size):
-                break
-        return out
-
-    def __iter__(self):
-        return self
-
-    def next(self):
-        result = self.readline()
-        if not result:
-            raise StopIteration
-        return result
-
-class TimestamperRate(Timestamper):
-    """Timestamper that uses a start time and a fixed rate"""
-    def __init__(self, infile, start, rate, end = None):
-        """
-        file: file name or object
-
-        start: Unix timestamp for the first value
-
-        rate: 1/rate is added to the timestamp for each line
-
-        end: If specified, raise StopIteration before outputting a value
-             greater than this."""
-        timestamp_to_string = nilmdb.utils.time.timestamp_to_string
-        rate_to_period = nilmdb.utils.time.rate_to_period
-        def iterator(start, rate, end):
-            n = 0
-            rate = float(rate)
-            while True:
-                now = start + rate_to_period(rate, n)
-                if end and now >= end:
-                    raise StopIteration
-                yield timestamp_to_string(now) + " "
-                n += 1
-        Timestamper.__init__(self, infile, iterator(start, rate, end))
-        self.start = start
-        self.rate = rate
-    def __str__(self):
-        return sprintf("TimestamperRate(..., start=\"%s\", rate=%g)",
-                       nilmdb.utils.time.timestamp_to_human(self.start),
-                       self.rate)
-
-class TimestamperNow(Timestamper):
-    """Timestamper that uses current time"""
-    def __init__(self, infile):
-        timestamp_to_string = nilmdb.utils.time.timestamp_to_string
-        get_now = nilmdb.utils.time.now
-        def iterator():
-            while True:
-                yield timestamp_to_string(get_now()) + " "
-        Timestamper.__init__(self, infile, iterator())
-    def __str__(self):
-        return "TimestamperNow(...)"

pytables-test/Makefile

@@ -0,0 +1,5 @@
+all:
+	time python test-indexed-read.py
+
+clean:
+	rm -f *pyc

pytables-test/README.jim

@@ -0,0 +1,2 @@
+New version from:
+  http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=641485#15

pytables-test/TODO.txt

@@ -0,0 +1,12 @@
+- Make CherryPy server that can handle simple GET/POST,
+  and a httplib client that can talk to that server.
+  Steps:
+  - Make server handle GET
+  - Make client send request, get response
+  - Add request streaming to server
+  - Add request streaming to client
+  - Make server handle POST
+  - Make client send request, get response
+  - Add request streaming to server
+  - Add request streaming to client
+  - Integrate into a server process that also keeps database open.

pytables-test/indexing-notes

@@ -0,0 +1,3 @@
+Indexing time64 doesn't seem to work -- needed to do "time >= 1243052015" even though the actual database times
+should be something like 1243052015.847000.  Let's switch to just using a 64-bit integer counting e.g.
+microseconds since 1970-01-01 

pytables-test/sample-query

@@ -0,0 +1,3 @@
+timestamp > 1243052015
+took 394.5 minutes in vitables
+(2340 rows matched)

pytables-test/server.py

@@ -0,0 +1,53 @@
+import sys
+import tables
+import nilmdb
+
+try:
+    import cherrypy
+    cherrypy.tools.json_out
+except:
+    sys.stderr.write("Cherrypy 3.2+ required\n")
+    sys.exit(1)
+
+class NilmApp:
+    def __init__(self, db):
+        self.db = db
+
+class Root(NilmApp):
+    """NILM Database"""
+
+    server_version = "1.0"
+
+    @cherrypy.expose
+    def index(self):
+        raise cherrypy.NotFound()
+
+    @cherrypy.expose
+    def favicon_ico(self):
+        raise cherrypy.NotFound()
+
+    @cherrypy.expose
+    @cherrypy.tools.json_out()
+    def version(self):
+        return self.server_version
+
+class Stream(NilmApp):
+    """Stream operations"""
+
+    @cherrypy.expose
+    @cherrypy.tools.json_out()
+    def list(self):
+        return 
+    
+cherrypy.config.update({
+    'server.socket_host': '127.0.0.1',
+    'server.socket_port': 12380
+    })
+
+db = nilmdb.nilmdb()
+cherrypy.tree.mount(Root(db), "/")
+cherrypy.tree.mount(Stream(db), "/stream")
+
+if __name__ == "__main__":
+    cherrypy.engine.start()
+    cherrypy.engine.block()

pytables-test/speed-pytables.py

@@ -0,0 +1,16 @@
+import tables
+import numpy
+
+class RawSample(tables.IsDescription):
+    timestamp = tables.UInt64Col()
+    voltage   = tables.UInt16Col(shape = 3)
+    current   = tables.UInt16Col(shape = 3)
+
+h5file = tables.openFile("test.h5", mode = "w", title = "Test")
+group = h5file.createGroup("/", "raw", "Raw Data")
+table = h5file.createTable(group, "nilm1", RawSample, "NILM 1")
+
+print repr(h5file)
+
+# write rows
+

pytables-test/test-indexing.py

@@ -0,0 +1,54 @@
+#!/usr/bin/python
+
+from tables import *
+import re
+import time
+
+# A class to describe our data
+class PrepData(IsDescription):
+    timestamp = Int64Col()
+    p1 = Float32Col()
+    q1 = Float32Col()
+    p3 = Float32Col()
+    q3 = Float32Col()
+    p5 = Float32Col()
+    q5 = Float32Col()
+    p7 = Float32Col()
+    q7 = Float32Col()
+
+filename = "test.h5"
+h5file = openFile(filename, mode = "w", title = "NILM Test")
+
+group = h5file.createGroup("/", "newton", "Newton school")
+table = h5file.createTable(group, "prep", PrepData, "Prep Data", expectedrows = 120 * 86400 * 90)
+
+table.cols.timestamp.createIndex()
+
+for i in range(0, 80):
+    # Open file
+    data = open("data/alldata")
+    count = 0
+    oldtime = time.time()
+    prep = table.row
+    for line in data:
+        count = count + 1
+        if count % 1000000 == 0:
+            print str(i) + ": " + str((time.time() - oldtime)) + ", total " + str(count/1000000) + "m lines"
+            oldtime = time.time()
+        v = re.split('\s+', line)
+        prep['timestamp'] = int(v[0]) + 500000000 * i
+        prep['p1'] = v[1]
+        prep['q1'] = v[2]
+        prep['p3'] = v[3]
+        prep['q3'] = v[4]
+        prep['p5'] = v[5]
+        prep['q5'] = v[6]
+        prep['p7'] = v[7]
+        prep['q7'] = v[8]
+        prep.append()
+    data.close()
+
+h5file.close()
+
+
+

pytables-test/test-write.py

@@ -0,0 +1,54 @@
+#!/usr/bin/python
+
+from tables import *
+import re
+import time
+
+# A class to describe our data
+class PrepData(IsDescription):
+    timestamp = Time64Col()
+    p1 = Float32Col()
+    q1 = Float32Col()
+    p3 = Float32Col()
+    q3 = Float32Col()
+    p5 = Float32Col()
+    q5 = Float32Col()
+    p7 = Float32Col()
+    q7 = Float32Col()
+
+filename = "test.h5"
+h5file = openFile(filename, mode = "w", title = "NILM Test")
+
+group = h5file.createGroup("/", "newton", "Newton school")
+table = h5file.createTable(group, "prep", PrepData, "Prep Data")
+
+table.cols.timestamp.createIndex()
+
+for i in range(0, 80):
+    # Open file
+    data = open("data/alldata")
+    count = 0
+    oldtime = time.time()
+    prep = table.row
+    for line in data:
+        count = count + 1
+        if count % 1000000 == 0:
+            print str(i) + ": " + str((time.time() - oldtime)) + ", total " + str(count/1000000) + "m lines"
+            oldtime = time.time()
+        v = re.split('\s+', line)
+        prep['timestamp'] = float(v[0]) / 1000.0 + 500000 * i
+        prep['p1'] = v[1]
+        prep['q1'] = v[2]
+        prep['p3'] = v[3]
+        prep['q3'] = v[4]
+        prep['p5'] = v[5]
+        prep['q5'] = v[6]
+        prep['p7'] = v[7]
+        prep['q7'] = v[8]
+        prep.append()
+    data.close()
+
+h5file.close()
+
+
+

setup.cfg

@@ -1,41 +1,9 @@
-[aliases]
-test = nosetests
-
 [nosetests]
-# Note: values must be set to 1, and have no comments on the same line,
-# for "python setup.py nosetests" to work correctly.
 nocapture=1
-# Comment this out to see CherryPy logs on failure:
-nologcapture=1
 with-coverage=1
 cover-inclusive=1
 cover-package=nilmdb
 cover-erase=1
-# this works, puts html output in cover/ dir:
-# cover-html=1
-# need nose 1.1.3 for this:
-# cover-branches=1
-#debug=nose
-#debug-log=nose.log
 stop=1
 verbosity=2
-tests=tests
-#tests=tests/test_threadsafety.py
-#tests=tests/test_bulkdata.py
-#tests=tests/test_mustclose.py
-#tests=tests/test_lrucache.py
-#tests=tests/test_cmdline.py
-#tests=tests/test_layout.py
-#tests=tests/test_rbtree.py
-#tests=tests/test_interval.py
-#tests=tests/test_rbtree.py,tests/test_interval.py
-#tests=tests/test_interval.py
-#tests=tests/test_client.py
-#tests=tests/test_timestamper.py
-#tests=tests/test_serializer.py
-#tests=tests/test_iteratorizer.py
-#tests=tests/test_client.py:TestClient.test_client_nilmdb
-#tests=tests/test_nilmdb.py
-#with-profile=1
-#profile-sort=time
-##profile-restrict=10  # doesn't work right, treated as string or something
+

setup.py

@@ -1,139 +1,9 @@
 #!/usr/bin/python
 
-# To release a new version, tag it:
-#   git tag -a nilmdb-1.1 -m "Version 1.1"
-#   git push --tags
-# Then just package it up:
-#   python setup.py sdist
+from distutils.core import setup
 
-# This is supposed to be using Distribute:
-#
-#   distutils provides a "setup" method.
-#   setuptools is a set of monkeypatches on top of that.
-#   distribute is a particular version/implementation of setuptools.
-#
-# So we don't really know if this is using the old setuptools or the
-# Distribute-provided version of setuptools.
-
-import traceback
-import sys
-import os
-
-try:
-    from setuptools import setup, find_packages
-    from distutils.extension import Extension
-    import distutils.version
-except ImportError:
-    traceback.print_exc()
-    print "Please install the prerequisites listed in README.txt"
-    sys.exit(1)
-
-# Versioneer manages version numbers from git tags.
-# https://github.com/warner/python-versioneer
-import versioneer
-versioneer.versionfile_source = 'nilmdb/_version.py'
-versioneer.versionfile_build = 'nilmdb/_version.py'
-versioneer.tag_prefix = 'nilmdb-'
-versioneer.parentdir_prefix = 'nilmdb-'
-
-# Hack to workaround logging/multiprocessing issue:
-# https://groups.google.com/d/msg/nose-users/fnJ-kAUbYHQ/_UsLN786ygcJ
-try: import multiprocessing
-except: pass
-
-# Use Cython if it's new enough, otherwise use preexisting C files.
-cython_modules = [ 'nilmdb.server.interval',
-                   'nilmdb.server.layout',
-                   'nilmdb.server.rbtree' ]
-try:
-    import Cython
-    from Cython.Build import cythonize
-    if (distutils.version.LooseVersion(Cython.__version__) <
-        distutils.version.LooseVersion("0.16")):
-        print "Cython version", Cython.__version__, "is too old; not using it."
-        raise ImportError()
-    use_cython = True
-except ImportError:
-    use_cython = False
-
-ext_modules = [ Extension('nilmdb.server.rocket', ['nilmdb/server/rocket.c' ]) ]
-for modulename in cython_modules:
-    filename = modulename.replace('.','/')
-    if use_cython:
-        ext_modules.extend(cythonize(filename + ".pyx"))
-    else:
-        cfile = filename + ".c"
-        if not os.path.exists(cfile):
-            raise Exception("Missing source file " + cfile + ".  "
-                            "Try installing cython >= 0.16.")
-        ext_modules.append(Extension(modulename, [ cfile ]))
-
-# We need a MANIFEST.in.  Generate it here rather than polluting the
-# repository with yet another setup-related file.
-with open("MANIFEST.in", "w") as m:
-    m.write("""
-# Root
-include README.txt
-include setup.cfg
-include setup.py
-include versioneer.py
-include Makefile
-include .coveragerc
-include .pylintrc
-
-# Cython files -- include source.
-recursive-include nilmdb/server *.pyx *.pyxdep *.pxd
-
-# Tests
-recursive-include tests *.py
-recursive-include tests/data *
-include tests/test.order
-
-# Docs
-recursive-include docs Makefile *.md
-
-# Extras
-recursive-include extras *
-""")
-
-# Run setup
-setup(name='nilmdb',
-      version = versioneer.get_version(),
-      cmdclass = versioneer.get_cmdclass(),
-      url = 'https://git.jim.sh/jim/lees/nilmdb.git',
-      author = 'Jim Paris',
-      description = "NILM Database",
-      long_description = "NILM Database",
-      license = "Proprietary",
-      author_email = 'jim@jtan.com',
-      tests_require = [ 'nose',
-                        'coverage',
-                        ],
-      setup_requires = [ 'distribute',
-                         ],
-      install_requires = [ 'decorator',
-                           'cherrypy >= 3.2',
-                           'simplejson',
-                           'pycurl',
-                           'python-dateutil',
-                           'pytz',
-                           'psutil >= 0.3.0',
-                           'requests >= 1.1.0, < 2.0.0',
-                           ],
-      packages = [ 'nilmdb',
-                   'nilmdb.utils',
-                   'nilmdb.utils.datetime_tz',
-                   'nilmdb.server',
-                   'nilmdb.client',
-                   'nilmdb.cmdline',
-                   'nilmdb.scripts',
-                   ],
-      entry_points = {
-          'console_scripts': [
-              'nilmtool = nilmdb.scripts.nilmtool:main',
-              'nilmdb-server = nilmdb.scripts.nilmdb_server:main',
-              ],
-          },
-      ext_modules = ext_modules,
-      zip_safe = False,
+setup(name = 'nilmdb',
+      version = '1.0',
+      scripts = [ 'bin/nilm-test.py' ],
+      packages = [ 'nilmdb' ],
       )

test/Makefile

@@ -0,0 +1,5 @@
+all:
+	python speed-readascii.py
+
+clean:
+	rm -f *pyc

test/printf.py

@@ -0,0 +1,4 @@
+from __future__ import print_function
+def printf(str, *args):
+    print(str % args, end='')
+    

test/speed-readascii.py

@@ -0,0 +1,67 @@
+#!/usr/bin/python
+
+from printf import printf
+import time
+import re
+import numpy as np
+import itertools
+
+class Timer():
+    def __init__(self, arg):
+        self.arg = arg
+    def __enter__(self): self.start = time.time()
+    def __exit__(self, *args): printf("%s: %f lines/sec\n", self.arg, 1e6 / (time.time() - self.start))
+
+def test_split():
+    for n, line in enumerate(open('1m.raw', 'r')):
+        out = [0]*6
+        tmp = [ int(i) for i in line.partition('#')[0].split() ]
+        out[0:len(tmp)] = tmp
+        if (n % 100000 == 0):
+            printf("line %d = %s\n", n, str(out))
+
+def test_split2():
+    for n, line in enumerate(open('1m.raw', 'r')):
+        out = [0]*6
+        tmp = [ int(i,10) for i in line.partition('#')[0].split() ]
+        out[0:len(tmp)] = tmp
+        if (n % 100000 == 0):
+            printf("line %d = %s\n", n, str(out))
+
+def test_regex():
+    for n, line in enumerate(open('1m.raw', 'r')):
+        out = [0]*6
+        tmp = [ int(x) for x in re.findall('(\d+)\s+',line.partition('#')[0]) ]
+        out[0:len(tmp)] = tmp
+        if (n % 100000 == 0):
+            printf("line %d = %s\n", n, str(out))
+
+def test_bigregex():
+    regex = re.compile('^(?:\s*)' + '(?:(\d+)\s+)?' * 6)
+    for n, line in enumerate(open('1m.raw', 'r')):
+        out = [ int(x or 0) for x in re.match(regex, line).groups() ]
+        if (n % 100000 == 0):
+            printf("line %d = %s\n", n, str(out))
+
+def test_numpy():
+    out = np.genfromtxt(open('1m.raw', 'r'),
+                        dtype = np.dtype('i2,i2,i2,i2,i2,i2'))
+    
+with Timer("numpy"):
+    test_numpy() # 106k/sec
+
+with Timer("regex"):
+    test_regex() # 121k/sec
+
+with Timer("split"):
+    test_split() # 219k/sec
+
+with Timer("split2"):
+    test_split2() # 328k/sec
+
+with Timer("bigregex"):
+    test_bigregex() # 130k/sec
+
+# The "int" operation takes quite a while -- int(x,10) is twice as fast
+# Perl does about 500k/sec
+

test/speed-readbinary.py

@@ -0,0 +1,74 @@
+#!/usr/bin/python
+
+from printf import printf
+import time
+import re
+import numpy as np
+import itertools
+import struct
+import array
+import os
+import mmap
+
+class Timer():
+    def __init__(self, arg):
+        self.arg = arg
+    def __enter__(self): self.start = time.time()
+    def __exit__(self, *args): printf("%s: %f klines/sec\n", self.arg, 1e3 / (time.time() - self.start))
+
+def test_struct1():
+    """read with struct.unpack"""
+    f = open('1m.bin', 'rb')
+    f.seek(0,os.SEEK_END)
+    filesize = f.tell()
+    f.seek(0,os.SEEK_SET)
+    packer = struct.Struct('!dHHHHHH')
+    items = filesize / packer.size
+    for n in xrange(items):
+        s = f.read(packer.size)
+        out = packer.unpack(s)
+        if (n % 100000 == 0):
+            printf("line %d = %s\n", n, str(out))
+
+def test_struct2():
+    """read with struct.unpack, convert to string"""
+    f = open('1m.bin', 'rb')
+    f.seek(0,os.SEEK_END)
+    filesize = f.tell()
+    f.seek(0,os.SEEK_SET)
+    packer = struct.Struct('!dHHHHHH')
+    items = filesize / packer.size
+    for n in xrange(items):
+        s = f.read(packer.size)
+        out = packer.unpack(s)
+        x = str(out)
+        if (n % 100000 == 0):
+            printf("line %d = %s\n", n, str(out))
+
+def test_mmap():
+    """struct.unpack with mmap"""
+    with open('1m.bin', 'rb') as f:
+        f.seek(0,os.SEEK_END)
+        filesize = f.tell()
+        f.seek(0,os.SEEK_SET)
+        m = mmap.mmap(f.fileno(), filesize, access=mmap.ACCESS_READ)
+        packer = struct.Struct('!dHHHHHH')
+        items = filesize / packer.size
+        for n in xrange(items):
+            out = packer.unpack(m[packer.size*n : packer.size*(n+1)])
+            if (n % 100000 == 0):
+                printf("line %d = %s\n", n, str(out))
+
+with Timer("mmap"):
+    test_mmap()  # 1600k
+
+with Timer("struct1"):
+    test_struct1()  # 1460k
+
+with Timer("struct2"):
+    test_struct2()  # 210k
+
+# Reading from the file is again much quicker than converting to string
+# Use mmap, it's good
+
+

test/speed-writebinary.py

@@ -0,0 +1,76 @@
+#!/usr/bin/python
+
+from printf import printf
+import time
+import re
+import numpy as np
+import itertools
+import struct
+import array
+
+class Timer():
+    def __init__(self, arg):
+        self.arg = arg
+    def __enter__(self): self.start = time.time()
+    def __exit__(self, *args): printf("%s: %f klines/sec\n", self.arg, 1e3 / (time.time() - self.start))
+
+def read_ascii():
+    for n in xrange(1000000):
+        yield (1234, 2345, 3456, 4576, 5678, 6789)
+#    for n, line in enumerate(open('1m.raw', 'r')):
+#        out = [0]*6
+#        tmp = [ int(i,10) for i in line.partition('#')[0].split() ]
+#        out[0:len(tmp)] = tmp
+#        if (n % 100000 == 0):
+#            printf("line %d = %s\n", n, str(out))
+#        yield out
+
+def test_struct1():
+    """write with struct.pack"""
+    f = open('1m.bin', 'wb')
+    for out in read_ascii():
+        s = struct.pack('!HHHHHH', *out)
+        f.write(s)
+
+def test_struct2():
+    """use constant format string"""
+    f = open('1m.bin', 'wb')
+    packer = struct.Struct('!HHHHHH')
+    for out in read_ascii():
+        f.write(packer.pack(*out))
+    f.close()
+    printf("size was %d\n", packer.size)
+
+def test_struct3():
+    """like struct1, with timestamp"""
+    f = open('1m.bin', 'wb')
+    for out in read_ascii():
+        s = struct.pack('!dHHHHHH', time.time(), *out)
+        f.write(s)
+
+def test_struct4():
+    """like struct2, with timestamp"""
+    f = open('1m.bin', 'wb')
+    packer = struct.Struct('!dHHHHHH')
+    for out in read_ascii():
+        f.write(packer.pack(time.time(), *out))
+    f.close()
+    printf("size was %d\n", packer.size)
+
+#raise Exception('done')
+
+with Timer("struct1"):
+    test_struct1() # 1089k
+
+with Timer("struct2"):
+    test_struct2() # 1249k
+
+with Timer("struct3"):
+    test_struct3() # 845k
+
+with Timer("struct4"):
+    test_struct4() # 922k
+
+# This seems fast enough for writing new data, since it's faster than
+# we read ascii data anyway.  Use e.g. struct4
+

test/test-struct-pack.py

@@ -0,0 +1,11 @@
+#!/usr/bin/python
+
+import struct
+import mmap
+
+f = open("test.dat", "rb+")
+mm = mmap.mmap(f.fileno(),3)
+
+print len(mm)
+print "first 3 bytes: " + mm[0:3];
+

test/test.dat

@@ -0,0 +1 @@
+

















test/todo.md

@@ -0,0 +1,7 @@
+- Have a class representing the file contents
+- Looks like an array
+  - len(), get(), index
+  - some form of bisect search
+  - get_extents = return [0].timestamp, [-1].timestamp
+  - 
+- Can append?  Sure, why not.  Just write to the file, extend mmap accordingly.

tests/data/extract-1

@@ -1,124 +0,0 @@
-# path: /newton/prep
-# layout: float32_8
-# start: Fri, 23 Mar 2012 10:00:30.000000 +0000
-# end: Fri, 23 Mar 2012 10:00:31.000000 +0000
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tests/data/extract-2

@@ -1,119 +0,0 @@
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tests/data/extract-3

@@ -1 +0,0 @@
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tests/data/extract-4

@@ -1,2 +0,0 @@
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tests/data/extract-5

@@ -1,124 +0,0 @@
-# path: /newton/prep
-# layout: float32_8
-# start: Fri, 23 Mar 2012 10:00:30.000000 +0000
-# end: Fri, 23 Mar 2012 10:00:31.000000 +0000
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tests/data/extract-6

@@ -1,120 +0,0 @@
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tests/data/extract-7

@@ -1,124 +0,0 @@
-# path: /newton/prep
-# layout: float32_8
-# start: 1332496830000000
-# end: 1332496830999000
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tests/data/prep-20120323T1002-first19lines

@@ -1,19 +0,0 @@
-2.56437e+05  2.24430e+05  4.01161e+03  3.47534e+03  7.49589e+03  3.38894e+03  2.61397e+02  3.73126e+03  
-2.53963e+05  2.24167e+05  5.62107e+03  1.54801e+03  9.16517e+03  3.52293e+03  1.05893e+03  2.99696e+03  
-2.58508e+05  2.24930e+05  6.01140e+03  8.18866e+02  9.03995e+03  4.48244e+03  2.49039e+03  2.67934e+03  
-2.59627e+05  2.26022e+05  4.47450e+03  2.42302e+03  7.41419e+03  5.07197e+03  2.43938e+03  2.96296e+03  
-2.55187e+05  2.24632e+05  4.73857e+03  3.39804e+03  7.39512e+03  4.72645e+03  1.83903e+03  3.39353e+03  
-2.57102e+05  2.21623e+05  6.14413e+03  1.44109e+03  8.75648e+03  3.49532e+03  1.86994e+03  3.75253e+03  
-2.63653e+05  2.21770e+05  6.22177e+03  7.38962e+02  9.54760e+03  2.66682e+03  1.46266e+03  3.33257e+03  
-2.63613e+05  2.25256e+05  4.47712e+03  2.43745e+03  8.51021e+03  3.85563e+03  9.59442e+02  2.38718e+03  
-2.55350e+05  2.26264e+05  4.28372e+03  3.92394e+03  7.91247e+03  5.46652e+03  1.28499e+03  2.09372e+03  
-2.52727e+05  2.24609e+05  5.85193e+03  2.49198e+03  8.54063e+03  5.62305e+03  2.33978e+03  3.00714e+03  
-2.58475e+05  2.23578e+05  5.92487e+03  1.39448e+03  8.77962e+03  4.54418e+03  2.13203e+03  3.84976e+03  
-2.61563e+05  2.24609e+05  4.33614e+03  2.45575e+03  8.05538e+03  3.46911e+03  6.27873e+02  3.66420e+03  
-2.56401e+05  2.24441e+05  4.18715e+03  3.45717e+03  7.90669e+03  3.53355e+03  -5.84482e+00  2.96687e+03  
-2.54745e+05  2.22644e+05  6.02005e+03  1.94721e+03  9.28939e+03  3.80020e+03  1.34820e+03  2.37785e+03  
-2.60723e+05  2.22660e+05  6.69719e+03  1.03048e+03  9.26124e+03  4.34917e+03  2.84530e+03  2.73619e+03  
-2.63089e+05  2.25711e+05  4.77887e+03  2.60417e+03  7.39660e+03  4.59811e+03  2.17472e+03  3.40729e+03  
-2.55843e+05  2.27128e+05  4.02413e+03  4.39323e+03  6.79336e+03  4.62535e+03  7.52009e+02  3.44647e+03  
-2.51904e+05  2.24868e+05  5.82289e+03  3.02127e+03  8.46160e+03  3.80298e+03  8.07212e+02  3.53468e+03  
-2.57670e+05  2.22974e+05  6.73436e+03  1.60956e+03  9.92960e+03  2.98028e+03  1.44168e+03  3.05351e+03  

tests/data/prep-20120323T1004-badtimes

@@ -1,11 +0,0 @@
-1332497040000000 2.56439e+05  2.24775e+05  2.92897e+03  4.66646e+03  7.58491e+03  3.57351e+03  -4.34171e+02  2.98819e+03  
-1332497040010000 2.51903e+05  2.23202e+05  4.23696e+03  3.49363e+03  8.53493e+03  4.29416e+03  8.49573e+02  2.38189e+03  
-1332497040020000 2.57625e+05  2.20247e+05  5.47017e+03  1.35872e+03  9.18903e+03  4.56136e+03  2.65599e+03  2.60912e+03  
-1332497040030000 2.63375e+05  2.20706e+05  4.51842e+03  1.80758e+03  8.17208e+03  4.17463e+03  2.57884e+03  3.32848e+03  
-1332497040040000 2.59221e+05  2.22346e+05  2.98879e+03  3.66264e+03  6.87274e+03  3.94223e+03  1.25928e+03  3.51786e+03  
-1332497040050000 2.51918e+05  2.22281e+05  4.22677e+03  2.84764e+03  7.78323e+03  3.81659e+03  8.04944e+02  3.46314e+03  
-1332497040050000 2.54478e+05  2.21701e+05  5.61366e+03  1.02262e+03  9.26581e+03  3.50152e+03  1.29331e+03  3.07271e+03  
-1332497040060000 2.59568e+05  2.22945e+05  4.97190e+03  1.28250e+03  8.62081e+03  4.06316e+03  1.85717e+03  2.61990e+03  
-1332497040070000 2.57269e+05  2.23697e+05  3.60527e+03  3.05749e+03  7.22363e+03  4.90330e+03  1.93736e+03  2.35357e+03  
-1332497040080000 2.52274e+05  2.21438e+05  5.01228e+03  2.86309e+03  7.87115e+03  4.80448e+03  2.18291e+03  2.93397e+03  
-1332497040090000 2.56468e+05  2.19205e+05  6.29804e+03  8.09467e+02  9.12895e+03  3.52055e+03  2.16980e+03  3.88739e+03  

tests/runtests.py

@@ -1,49 +0,0 @@
-#!/usr/bin/python
-
-import nose
-import os
-import sys
-import glob
-from collections import OrderedDict
-
-# Change into parent dir
-os.chdir(os.path.dirname(os.path.realpath(__file__)) + "/..")
-
-class JimOrderPlugin(nose.plugins.Plugin):
-    """When searching for tests and encountering a directory that
-    contains a 'test.order' file, run tests listed in that file, in the
-    order that they're listed.  Globs are OK in that file and duplicates
-    are removed."""
-    name = 'jimorder'
-    score = 10000
-
-    def prepareTestLoader(self, loader):
-        def wrap(func):
-            def wrapper(name, *args, **kwargs):
-                addr = nose.selector.TestAddress(
-                    name, workingDir=loader.workingDir)
-                try:
-                    order = os.path.join(addr.filename, "test.order")
-                except:
-                    order = None
-                if order and os.path.exists(order):
-                    files = []
-                    for line in open(order):
-                        line = line.split('#')[0].strip()
-                        if not line:
-                            continue
-                        fn = os.path.join(addr.filename, line.strip())
-                        files.extend(sorted(glob.glob(fn)) or [fn])
-                    files = list(OrderedDict.fromkeys(files))
-                    tests = [ wrapper(fn, *args, **kwargs) for fn in files ]
-                    return loader.suiteClass(tests)
-                return func(name, *args, **kwargs)
-            return wrapper
-        loader.loadTestsFromName = wrap(loader.loadTestsFromName)
-        return loader
-
-# Use setup.cfg for most of the test configuration.  Adding
-# --with-jimorder here means that a normal "nosetests" run will
-# still work, it just won't support test.order.
-nose.main(addplugins = [ JimOrderPlugin() ],
-          argv = sys.argv + ["--with-jimorder"])

tests/test.order

@@ -1,19 +0,0 @@
-test_printf.py
-test_threadsafety.py
-test_lrucache.py
-test_mustclose.py
-
-test_serializer.py
-test_iteratorizer.py
-
-test_timestamper.py
-test_layout.py
-test_rbtree.py
-test_interval.py
-
-test_bulkdata.py
-test_nilmdb.py
-test_client.py
-test_cmdline.py
-
-test_*.py

tests/test_bulkdata.py

@@ -1,116 +0,0 @@
-# -*- coding: utf-8 -*-
-
-import nilmdb
-from nilmdb.utils.printf import *
-from nose.tools import *
-from nose.tools import assert_raises
-import itertools
-
-from testutil.helpers import *
-
-testdb = "tests/bulkdata-testdb"
-
-import nilmdb.server.bulkdata
-from nilmdb.server.bulkdata import BulkData
-
-class TestBulkData(object):
-
-    def test_bulkdata(self):
-        for (size, files, db) in [ ( 0, 0, testdb ),
-                                       ( 25, 1000, testdb ),
-                                       ( 1000, 3, testdb.decode("utf-8") ) ]:
-            recursive_unlink(db)
-            os.mkdir(db)
-            self.do_basic(db, size, files)
-
-    def do_basic(self, db, size, files):
-        """Do the basic test with variable file_size and files_per_dir"""
-        if not size or not files:
-            data = BulkData(db)
-        else:
-            data = BulkData(db, file_size = size, files_per_dir = files)
-
-        # create empty
-        with assert_raises(ValueError):
-            data.create("/foo", "uint16_8")
-        with assert_raises(ValueError):
-            data.create("foo/bar", "uint16_8")
-        data.create("/foo/bar", "uint16_8")
-        data.create(u"/foo/baz/quux", "float64_16")
-        with assert_raises(ValueError):
-            data.create("/foo/bar/baz", "uint16_8")
-        with assert_raises(ValueError):
-            data.create("/foo/baz", "float64_16")
-
-        # get node -- see if caching works
-        nodes = []
-        for i in range(5000):
-            nodes.append(data.getnode("/foo/bar"))
-            nodes.append(data.getnode("/foo/baz/quux"))
-        del nodes
-
-        def get_node_slice(key):
-            if isinstance(key, slice):
-                return [ node.get_data(x, x+1) for x in
-                         xrange(*key.indices(node.nrows)) ]
-            return node.get_data(key, key+1)
-
-        # Test node
-        node = data.getnode("/foo/bar")
-        with assert_raises(IndexError):
-            x = get_node_slice(0)
-        with assert_raises(IndexError):
-            x = node[0] # timestamp
-        raw = []
-        for i in range(1000):
-            raw.append("%d 1 2 3 4 5 6 7 8\n" % (10000 + i))
-        node.append_string("".join(raw[0:1]), 0, 50000)
-        node.append_string("".join(raw[1:100]), 0, 50000)
-        node.append_string("".join(raw[100:]), 0, 50000)
-
-        misc_slices = [ 0, 100, slice(None), slice(0), slice(10),
-                        slice(5,10), slice(3,None), slice(3,-3),
-                        slice(20,10), slice(200,100,-1), slice(None,0,-1),
-                        slice(100,500,5) ]
-
-        # Extract slices
-        for s in misc_slices:
-            eq_(get_node_slice(s), raw[s])
-
-        # Extract misc slices while appending, to make sure the
-        # data isn't being added in the middle of the file
-        for s in [2, slice(1,5), 2, slice(1,5)]:
-            node.append_string("0 0 0 0 0 0 0 0 0\n", 0, 50000)
-            raw.append("0 0 0 0 0 0 0 0 0\n")
-            eq_(get_node_slice(s), raw[s])
-
-        # Get some coverage of remove; remove is more fully tested
-        # in cmdline
-        with assert_raises(IndexError):
-            node.remove(9999,9998)
-
-        # close, reopen
-        # reopen
-        data.close()
-        if not size or not files:
-            data = BulkData(db)
-        else:
-            data = BulkData(db, file_size = size, files_per_dir = files)
-        node = data.getnode("/foo/bar")
-
-        # Extract slices
-        for s in misc_slices:
-            eq_(get_node_slice(s), raw[s])
-
-        # destroy
-        with assert_raises(ValueError):
-            data.destroy("/foo")
-        with assert_raises(ValueError):
-            data.destroy("/foo/baz")
-        with assert_raises(ValueError):
-            data.destroy("/foo/qwerty")
-        data.destroy("/foo/baz/quux")
-        data.destroy("/foo/bar")
-
-        # close
-        data.close()