Switch to versioneer-provided versions everywhere

Specifically, switch from using global configuration and several apps,
to using application-specific configuration with a single app.  This
should hopefully make it easier to plug this into another
WSGI-compliant server someday, and also silences some startup warnings
about missing application configs.

.coveragerc

@@ -7,3 +7,4 @@
 exclude_lines =
 	pragma: no cover
 	if 0:
+omit = nilmdb/utils/datetime_tz*,nilmdb/scripts,nilmdb/_version.py

.gitattributes

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

.gitignore

@@ -1,4 +1,27 @@
-db/
+# Tests
 tests/*testdb/
 .coverage
+db/
+
+# Compiled / cythonized files
+docs/*.html
+build/
 *.pyc
+nilmdb/server/interval.c
+nilmdb/server/interval.so
+nilmdb/server/layout.c
+nilmdb/server/layout.so
+nilmdb/server/rbtree.c
+nilmdb/server/rbtree.so
+
+# Setup junk
+dist/
+nilmdb.egg-info/
+
+# This gets generated as needed by setup.py
+MANIFEST.in
+MANIFEST
+
+# Misc
+timeit*out
+

.pylintrc

@@ -0,0 +1,250 @@
+# -*- 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

@@ -1,20 +1,36 @@
+# By default, run the tests.
 all: test
 
-tool:
-	python nilmtool.py  --help
-	python nilmtool.py list --help
-	python nilmtool.py -u asfdadsf list
+version:
+	python setup.py version
+
+build:
+	python setup.py build_ext --inplace
+
+dist: sdist
+sdist:
+	python setup.py sdist
+
+install:
+	python setup.py install
+
+docs:
+	make -C docs
 
 lint:
-	pylint -f parseable nilmdb
+	pylint --rcfile=.pylintrc nilmdb
 
 test:
-	nosetests
-
-profile:
-	nosetests --with-profile 
+	python tests/runtests.py
 
 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 build dist sdist install docs lint test clean

README.txt

@@ -1,4 +1,22 @@
-sudo apt-get install python-nose python-coverage
-sudo apt-get install python-tables python-cherrypy3
-sudo apt-get install cython # 0.17.1-1 or newer
+nilmdb: Non-Intrusive Load Monitor Database
+by Jim Paris <jim@jtan.com>
 
+Prerequisites:
+
+  # 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 python-pycurl python-dateutil python-tz
+
+  # Tools for running tests
+  sudo apt-get install python-nose python-coverage
+
+Install:
+
+  python setup.py install
+
+Usage:
+
+  nilmdb-server --help
+  nilmtool --help

TODO

@@ -1 +0,0 @@
-- Merge adjacent intervals on insert (maybe with client help?)

design.md

@@ -1,200 +0,0 @@
-Structure
----------
-nilmdb.nilmdb is the NILM database interface.  It tracks a PyTables
-database holds actual rows of data, and a SQL database tracks metadata
-and ranges.
-
-Access to the nilmdb must be single-threaded.  This is handled with
-the nilmdb.serializer class.
-
-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"

docs/Makefile

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

docs/TODO.md

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

docs/design.md

@@ -0,0 +1,268 @@
+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.

nilmdb/__init__.py

@@ -1,12 +1,8 @@
 """Main NilmDB import"""
 
-from .nilmdb import NilmDB
-from .server import Server
-from .client import Client
-
-import pyximport; pyximport.install()
-import layout
-import interval
-
-import cmdline
+from nilmdb.server import NilmDB, Server
+from nilmdb.client import Client
 
+from nilmdb._version import get_versions
+__version__ = get_versions()['version']
+del get_versions

nilmdb/_version.py

@@ -0,0 +1,197 @@
+
+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/bulkdata.py

@@ -1,310 +0,0 @@
-# Fixed record size bulk data storage
-
-from __future__ import absolute_import
-from __future__ import division
-import nilmdb
-from nilmdb.utils.printf import *
-
-import os
-import sys
-import cPickle as pickle
-import struct
-import fnmatch
-import mmap
-
-# Up to 256 open file descriptors at any given time
-table_cache_size = 16
-fd_cache_size = 16
-
-@nilmdb.utils.must_close()
-class BulkData(object):
-    def __init__(self, basepath):
-        self.basepath = basepath
-        self.root = os.path.join(self.basepath, "data")
-
-        # 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(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'
-        """
-        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")
-
-        # Get layout, and build format string for struct module
-        try:
-            layout = nilmdb.layout.get_named(layout_name)
-            struct_fmt = '<d'  # Little endian, double timestamp
-            struct_mapping = {
-                "int8": 'b',
-                "uint8": 'B',
-                "int16": 'h',
-                "uint16": 'H',
-                "int32": 'i',
-                "uint32": 'I',
-                "int64": 'q',
-                "uint64": 'Q',
-                "float32": 'f',
-                "float64": 'd',
-                }
-            for n in range(layout.count):
-                struct_fmt += struct_mapping[layout.datatype]
-        except KeyError:
-            raise ValueError("no such layout, or bad data types")
-
-        # Create the table.  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)
-        try:
-            # Make directories leading up to this one
-            elements = path.lstrip('/').split('/')
-            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)
-
-            # Make the final dir
-            ospath = os.path.join(self.root, *elements)
-            if os.path.isdir(ospath):
-                raise ValueError("subdirs of this path already exist")
-            os.mkdir(ospath)
-
-            # Write format string to file
-            Table.create(ospath, struct_fmt)
-        except OSError as e:
-            raise ValueError("error creating table at that path: " + e.strerror)
-
-        # Open and cache it
-        self.getnode(unicodepath)
-
-        # Success
-        return
-
-    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, ospath)
-
-        # Remove the contents of the target directory
-        if not os.path.isfile(os.path.join(ospath, "format")):
-            raise ValueError("nothing at that path")
-        for file in os.listdir(ospath):
-            os.remove(os.path.join(ospath, file))
-
-        # Remove empty parent directories
-        for i in reversed(range(len(elements))):
-            ospath = os.path.join(self.root, *elements[0:i+1])
-            try:
-                os.rmdir(ospath)
-            except OSError:
-                break
-
-    # 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()
-class Table(object):
-    """Tools to help access a single table (data at a specific OS path)"""
-
-    # Class methods, to help keep format details in this class.
-    @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, struct_fmt):
-        """Initialize a table at the given OS path.
-        'struct_fmt' is a Struct module format description"""
-        format = { "rows_per_file": 4 * 1024 * 1024,
-                   "struct_fmt": struct_fmt }
-        with open(os.path.join(root, "format"), "wb") as f:
-            pickle.dump(format, 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 and build packer
-        with open(self._fullpath("format"), "rb") as f:
-            format = pickle.load(f)
-        self.rows_per_file = format["rows_per_file"]
-        self.packer = struct.Struct(format["struct_fmt"])
-        self.file_size = self.packer.size * self.rows_per_file
-
-        # Find nrows by locating the lexicographically last filename
-        # and using its size.
-        pattern = '[0-9a-f]' * 8
-        allfiles = fnmatch.filter(os.listdir(self.root), pattern)
-        if allfiles:
-            filename = max(allfiles)
-            offset = os.path.getsize(self._fullpath(filename))
-            self.nrows = self._row_from_fnoffset(filename, offset)
-        else:
-            self.nrows = 0
-
-    def close(self):
-        self.mmap_open.cache_remove_all()
-
-    # Internal helpers
-    def _fullpath(self, filename):
-        return os.path.join(self.root, filename)
-
-    def _fnoffset_from_row(self, row):
-        """Return a (filename, offset, count) tuple:
-
-        filename: the filename that contains the specified row
-          offset: byte offset of the specified row within the file
-           count: number of rows (starting at offste) that fit in the file
-        """
-        filenum = row // self.rows_per_file
-        filename = sprintf("%08x", filenum)
-        offset = (row % self.rows_per_file) * self.packer.size
-        count = self.rows_per_file - (row % self.rows_per_file)
-        return (filename, offset, count)
-
-    def _row_from_fnoffset(self, filename, offset):
-        """Return the row number that corresponds to the given
-        filename and byte-offset within that file."""
-        filenum = int(filename, 16)
-        if (offset % self.packer.size) != 0:
-            raise ValueError("file offset is not a multiple of data size")
-        row = (filenum * self.rows_per_file) + (offset // self.packer.size)
-        return row
-
-    # Cache open files
-    @nilmdb.utils.lru_cache(size = fd_cache_size,
-                            onremove = lambda x: x.close())
-    def mmap_open(self, file, newsize = None):
-        """Open and map a given filename (relative to self.root).
-        Will be automatically closed when evicted from the cache.
-
-        If 'newsize' is provided, the file is truncated to the given
-        size before the mapping is returned.  (Note that the LRU cache
-        on this function means the truncate will only happen if the
-        object isn't already cached; mmap.resize should be used too)"""
-        f = open(os.path.join(self.root, file), "a+", 0)
-        if newsize is not None:
-            # mmap can't map a zero-length file, so this allows the
-            # caller to set the filesize between file creation and
-            # mmap.
-            f.truncate(newsize)
-        mm = mmap.mmap(f.fileno(), 0)
-        return mm
-
-    def append(self, data):
-        """Append the data and flush it to disk.
-        data is a nested Python list [[row],[row],[...]]"""
-        remaining = len(data)
-        dataiter = iter(data)
-        while remaining:
-            # See how many rows we can fit into the current file, and open it
-            (filename, offset, count) = self._fnoffset_from_row(self.nrows)
-            if count > remaining:
-                count = remaining
-            newsize = offset + count * self.packer.size
-            mm = self.mmap_open(filename, newsize)
-            mm.seek(offset)
-
-            # Extend the file to the target length.  We specified
-            # newsize when opening, but that may have been ignored if
-            # the mmap_open returned a cached object.
-            mm.resize(newsize)
-
-            # Write the data
-            for i in xrange(count):
-                row = dataiter.next()
-                mm.write(self.packer.pack(*row))
-            remaining -= count
-            self.nrows += count
-
-    def __getitem__(self, key):
-        """Extract data and return it.  Supports simple indexing
-        (table[n]) and range slices (table[n:m]).  Returns a nested
-        Python list [[row],[row],[...]]"""
-
-        # Handle simple slices
-        if isinstance(key, slice):
-            # Fall back to brute force if the slice isn't simple
-            if ((key.step is not None and key.step != 1) or
-                key.start is None or
-                key.stop is None or
-                key.start >= key.stop or
-                key.start < 0 or
-                key.stop > self.nrows):
-                return [ self[x] for x in xrange(*key.indices(self.nrows)) ]
-
-            ret = []
-            row = key.start
-            remaining = key.stop - key.start
-            while remaining:
-                (filename, offset, count) = self._fnoffset_from_row(row)
-                if count > remaining:
-                    count = remaining
-                mm = self.mmap_open(filename)
-                for i in xrange(count):
-                    ret.append(list(self.packer.unpack_from(mm, offset)))
-                    offset += self.packer.size
-                remaining -= count
-                row += count
-            return ret
-
-        # Handle single points
-        if key < 0 or key >= self.nrows:
-            raise IndexError("Index out of range")
-        (filename, offset, count) = self._fnoffset_from_row(key)
-        mm = self.mmap_open(filename)
-        # unpack_from ignores the mmap object's current seek position
-        return self.packer.unpack_from(mm, offset)
-
-class TimestampOnlyTable(object):
-    """Helper that lets us pass a Tables object into bisect, by
-    returning only the timestamp when a particular row is requested."""
-    def __init__(self, table):
-        self.table = table
-    def __getitem__(self, index):
-        return self.table[index][0]

nilmdb/client/__init__.py

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

nilmdb/client/client.py

@@ -2,34 +2,22 @@
 
 """Class for performing HTTP client requests via libcurl"""
 
-from __future__ import absolute_import
-from nilmdb.utils.printf import *
+import nilmdb
+import nilmdb.utils
+import nilmdb.client.httpclient
 
 import time
-import sys
-import re
-import os
 import simplejson as json
-import itertools
-
-import nilmdb.httpclient
-
-# Other functions expect to see these in the nilmdb.client namespace
-from nilmdb.httpclient import ClientError, ServerError, Error
-
-version = "1.0"
 
 def float_to_string(f):
-    # Use repr to maintain full precision in the string output.
+    """Use repr to maintain full precision in the string output."""
     return repr(float(f))
 
 class Client(object):
     """Main client interface to the Nilm database."""
 
-    client_version = version
-
     def __init__(self, url):
-        self.http = nilmdb.httpclient.HTTPClient(url)
+        self.http = nilmdb.client.httpclient.HTTPClient(url)
 
     def _json_param(self, data):
         """Return compact json-encoded version of parameter"""
@@ -96,6 +84,17 @@ class Client(object):
         params = { "path": path }
         return self.http.get("stream/destroy", 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"] = float_to_string(start)
+        if end is not None:
+            params["end"] = float_to_string(end)
+        return self.http.get("stream/remove", params)
+
     def stream_insert(self, path, data, start = None, end = None):
         """Insert data into a stream.  data should be a file-like object
         that provides ASCII data that matches the database layout for path.
@@ -114,11 +113,6 @@ class Client(object):
         max_time = 30
         end_epsilon = 1e-6
 
-        def pairwise(iterable):
-            "s -> (s0,s1), (s1,s2), ..., (sn,None)"
-            a, b = itertools.tee(iterable)
-            next(b, None)
-            return itertools.izip_longest(a, b)
 
         def extract_timestamp(line):
             return float(line.split()[0])
@@ -148,7 +142,9 @@ class Client(object):
         block_data = ""
         block_start = start
         result = None
-        for (line, nextline) in pairwise(data):
+        line = None
+        nextline = None
+        for (line, nextline) in nilmdb.utils.misc.pairwise(data):
             # If we don't have a starting time, extract it from the first line
             if block_start is None:
                 block_start = extract_timestamp(line)

nilmdb/client/errors.py

@@ -0,0 +1,33 @@
+"""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

@@ -1,44 +1,14 @@
 """HTTP client library"""
 
-from __future__ import absolute_import
-from nilmdb.utils.printf import *
+import nilmdb
 import nilmdb.utils
+from nilmdb.client.errors import ClientError, ServerError, Error
 
-import time
-import sys
-import re
-import os
 import simplejson as json
 import urlparse
 import pycurl
 import cStringIO
 
-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 __str__(self):
-        s = sprintf("[%s]", self.status)
-        if self.message:
-            s += sprintf(" %s", self.message)
-        if self.url:
-            s += sprintf(" (%s)", self.url)
-        if self.traceback: # pragma: no cover
-            s += sprintf("\nServer traceback:\n%s", self.traceback)
-        return s
-class ClientError(Error):
-    pass
-class ServerError(Error):
-    pass
-
 class HTTPClient(object):
     """Class to manage and perform HTTP requests from the client"""
     def __init__(self, baseurl = ""):
@@ -59,7 +29,7 @@ class HTTPClient(object):
         url = urlparse.urljoin(self.baseurl, url)
         if params:
             url = urlparse.urljoin(
-                url, "?" + nilmdb.utils.urllib.urlencode(params, True))
+                url, "?" + nilmdb.utils.urllib.urlencode(params))
         self.curl.setopt(pycurl.URL, url)
         self.url = url
 
@@ -67,10 +37,12 @@ class HTTPClient(object):
         code = self.curl.getinfo(pycurl.RESPONSE_CODE)
         if code == 200:
             return
-        # Default variables for exception
+        # 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" : self.url,
                  "status" : str(code),
-                 "message" : None,
+                 "message" : body,
                  "traceback" : None }
         try:
             # Fill with server-provided data if we can
@@ -112,9 +84,10 @@ class HTTPClient(object):
             self.curl.setopt(pycurl.WRITEFUNCTION, callback)
             self.curl.perform()
         try:
-            for i in nilmdb.utils.Iteratorizer(func):
+            with nilmdb.utils.Iteratorizer(func, curl_hack = True) as it:
+                for i in it:
                     if self._status == 200:
-                    # If we had a 200 response, yield the data to the caller.
+                        # If we had a 200 response, yield the data to caller.
                         yield i
                     else:
                         # Otherwise, collect it into an error string.
@@ -188,9 +161,9 @@ class HTTPClient(object):
 
     def put(self, url, postdata, params = None, retjson = True):
         """Simple PUT"""
+        self.curl.setopt(pycurl.UPLOAD, 1)
         self._setup_url(url, params)
         data = cStringIO.StringIO(postdata)
-        self.curl.setopt(pycurl.UPLOAD, 1)
         self.curl.setopt(pycurl.READFUNCTION, data.read)
         return self._doreq(url, params, retjson)
 
@@ -216,8 +189,8 @@ class HTTPClient(object):
 
     def put_gen(self, url, postdata, params = None, retjson = True):
         """Simple PUT, returning a generator"""
+        self.curl.setopt(pycurl.UPLOAD, 1)
         self._setup_url(url, params)
         data = cStringIO.StringIO(postdata)
-        self.curl.setopt(pycurl.UPLOAD, 1)
         self.curl.setopt(pycurl.READFUNCTION, data.read)
         return self._doreq_gen(url, params, retjson)

nilmdb/cmdline/__init__.py

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

nilmdb/cmdline/cmdline.py

@@ -1,33 +1,34 @@
 """Command line client functionality"""
 
-from __future__ import absolute_import
+import nilmdb
 from nilmdb.utils.printf import *
-import nilmdb.client
+from nilmdb.utils import datetime_tz
 
-import datetime_tz
-import dateutil.parser
 import sys
 import re
 import argparse
 from argparse import ArgumentDefaultsHelpFormatter as def_form
 
-version = "0.1"
-
 # Valid subcommands.  Defined in separate files just to break
 # things up -- they're still called with Cmdline as self.
 subcommands = [ "info", "create", "list", "metadata", "insert", "extract",
-                "destroy" ]
+                "remove", "destroy" ]
 
-# Import the subcommand modules.  Equivalent way of doing this would be
-# from . import info as cmd_info
+# 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 Cmdline(object):
 
-    def __init__(self, argv):
-        self.argv = argv
+    def __init__(self, argv = None):
+        self.argv = argv or sys.argv[1:]
+        self.client = None
 
     def arg_time(self, toparse):
         """Parse a time string argument"""
@@ -43,10 +44,10 @@ class Cmdline(object):
         If the string doesn't contain a timestamp, the current local
         timezone is assumed (e.g. from the TZ env var).
         """
-        # If string doesn't contain at least 6 digits, consider it
-        # invalid.  smartparse might otherwise accept empty strings
-        # and strings with just separators.
-        if len(re.findall(r"\d", toparse)) < 6:
+        # 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
@@ -90,17 +91,14 @@ class Cmdline(object):
         return dt.strftime("%a, %d %b %Y %H:%M:%S.%f %z")
 
     def parser_setup(self):
-        version_string = sprintf("nilmtool %s, client library %s",
-                                 version, nilmdb.Client.client_version)
-
-        self.parser = argparse.ArgumentParser(add_help = False,
+        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=version_string)
+                           version = nilmdb.__version__)
 
         group = self.parser.add_argument_group("Server")
         group.add_argument("-u", "--url", action="store",
@@ -119,6 +117,7 @@ class Cmdline(object):
 
     def die(self, formatstr, *args):
         fprintf(sys.stderr, formatstr + "\n", *args)
+        if self.client:
             self.client.close()
         sys.exit(-1)
 
@@ -131,13 +130,17 @@ class Cmdline(object):
         self.parser_setup()
         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(self.args.url)
 
         # Make a test connection to make sure things work
         try:
             server_version = self.client.version()
         except nilmdb.client.Error as e:
-            self.die("Error connecting to server: %s", str(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

nilmdb/cmdline/create.py

@@ -1,16 +1,24 @@
-from __future__ import absolute_import
 from nilmdb.utils.printf import *
+import nilmdb
 import nilmdb.client
 
-from argparse import ArgumentDefaultsHelpFormatter as def_form
+from argparse import RawDescriptionHelpFormatter as raw_form
 
 def setup(self, sub):
     cmd = sub.add_parser("create", help="Create a new stream",
-                         formatter_class = def_form,
+                         formatter_class = raw_form,
                          description="""
-                         Create a new empty stream at the
-                         specified path and with the specifed
+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")
@@ -24,4 +32,4 @@ def cmd_create(self):
     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))
+        self.die("error creating stream: %s", str(e))

nilmdb/cmdline/destroy.py

@@ -1,5 +1,5 @@
-from __future__ import absolute_import
 from nilmdb.utils.printf import *
+import nilmdb
 import nilmdb.client
 
 from argparse import ArgumentDefaultsHelpFormatter as def_form
@@ -22,4 +22,4 @@ def cmd_destroy(self):
     try:
         self.client.stream_destroy(self.args.path)
     except nilmdb.client.ClientError as e:
-        self.die("Error deleting stream: %s", str(e))
+        self.die("error destroying stream: %s", str(e))

nilmdb/cmdline/extract.py

@@ -1,25 +1,24 @@
-from __future__ import absolute_import
 from __future__ import print_function
 from nilmdb.utils.printf import *
 import nilmdb.client
-import sys
 
 def setup(self, sub):
     cmd = sub.add_parser("extract", help="Extract data",
                          description="""
                          Extract data from a stream.
                          """)
-    cmd.set_defaults(handler = cmd_extract)
+    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")
     group.add_argument("-s", "--start", required=True,
                        metavar="TIME", type=self.arg_time,
-                       help="Starting timestamp (free-form)")
+                       help="Starting timestamp (free-form, inclusive)")
     group.add_argument("-e", "--end", required=True,
                        metavar="TIME", type=self.arg_time,
-                       help="Ending timestamp (free-form)")
+                       help="Ending timestamp (free-form, noninclusive)")
 
     group = cmd.add_argument_group("Output format")
     group.add_argument("-b", "--bare", action="store_true",
@@ -27,20 +26,32 @@ def setup(self, sub):
     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")
 
+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)
+        self.die("error getting stream info for path %s", self.args.path)
     layout = streams[0][1]
 
+    if self.args.timestamp_raw:
+        time_string = repr
+    else:
+        time_string = self.time_string
+
     if self.args.annotate:
         printf("# path: %s\n", self.args.path)
         printf("# layout: %s\n", layout)
-        printf("# start: %s\n", self.time_string(self.args.start))
-        printf("# end: %s\n", self.time_string(self.args.end))
+        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,

nilmdb/cmdline/info.py

@@ -1,4 +1,4 @@
-from __future__ import absolute_import
+import nilmdb
 from nilmdb.utils.printf import *
 
 from argparse import ArgumentDefaultsHelpFormatter as def_form
@@ -14,7 +14,7 @@ def setup(self, sub):
 
 def cmd_info(self):
     """Print info about the server"""
-    printf("Client library version: %s\n", self.client.client_version)
+    printf("Client version: %s\n", nilmdb.__version__)
     printf("Server version: %s\n", self.client.version())
     printf("Server URL: %s\n", self.client.geturl())
     printf("Server database path: %s\n", self.client.dbpath())

nilmdb/cmdline/insert.py

@@ -1,7 +1,7 @@
-from __future__ import absolute_import
 from nilmdb.utils.printf import *
+import nilmdb
 import nilmdb.client
-import nilmdb.timestamper
+import nilmdb.utils.timestamper as timestamper
 
 import sys
 
@@ -51,12 +51,10 @@ 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)
-
-    layout = streams[0][1]
+        self.die("error getting stream info for path %s", self.args.path)
 
     if self.args.start and len(self.args.file) != 1:
-        self.die("--start can only be used with one input file, for now")
+        self.die("error: --start can only be used with one input file")
 
     for filename in self.args.file:
         if filename == '-':
@@ -65,11 +63,11 @@ def cmd_insert(self):
             try:
                 infile = open(filename, "r")
             except IOError:
-                self.die("Error opening input file %s", filename)
+                self.die("error opening input file %s", filename)
 
         # Build a timestamper for this file
         if self.args.none:
-            ts = nilmdb.timestamper.TimestamperNull(infile)
+            ts = timestamper.TimestamperNull(infile)
         else:
             if self.args.start:
                 start = self.args.start
@@ -77,14 +75,14 @@ def cmd_insert(self):
                 try:
                     start = self.parse_time(filename)
                 except ValueError:
-                    self.die("Error extracting time from filename '%s'",
+                    self.die("error extracting time from filename '%s'",
                              filename)
 
             if not self.args.rate:
-                self.die("Need to specify --rate")
+                self.die("error: --rate is needed, but was not specified")
             rate = self.args.rate
 
-            ts = nilmdb.timestamper.TimestamperRate(infile, start, rate)
+            ts = timestamper.TimestamperRate(infile, start, rate)
 
         # Print info
         if not self.args.quiet:
@@ -93,13 +91,13 @@ def cmd_insert(self):
 
         # Insert the data
         try:
-            result = self.client.stream_insert(self.args.path, ts)
+            self.client.stream_insert(self.args.path, ts)
         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))
+            self.die("error inserting data: %s", str(e))
 
     return

nilmdb/cmdline/list.py

@@ -1,8 +1,7 @@
-from __future__ import absolute_import
 from nilmdb.utils.printf import *
-import nilmdb.client
 
 import fnmatch
+import argparse
 from argparse import ArgumentDefaultsHelpFormatter as def_form
 
 def setup(self, sub):
@@ -13,27 +12,53 @@ def setup(self, sub):
                          optionally filtering by layout or path.  Wildcards
                          are accepted.
                          """)
-    cmd.set_defaults(handler = cmd_list)
+    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)")
+    group.add_argument("path_positional", default="*",
+                       nargs="?", help=argparse.SUPPRESS)
     group.add_argument("-l", "--layout", default="*",
                        help="Match only this stream layout")
-    group.add_argument("-p", "--path", default="*",
-                       help="Match only this path")
 
     group = cmd.add_argument_group("Interval details")
     group.add_argument("-d", "--detail", action="store_true",
                        help="Show available data time intervals")
+    group.add_argument("-T", "--timestamp-raw", action="store_true",
+                       help="Show raw timestamps in time intervals")
     group.add_argument("-s", "--start",
                        metavar="TIME", type=self.arg_time,
-                       help="Starting timestamp (free-form)")
+                       help="Starting timestamp (free-form, inclusive)")
     group.add_argument("-e", "--end",
                        metavar="TIME", type=self.arg_time,
-                       help="Ending timestamp (free-form)")
+                       help="Ending timestamp (free-form, noninclusive)")
+
+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 is after end")
 
 def cmd_list(self):
     """List available streams"""
     streams = self.client.stream_list()
+
+    if self.args.timestamp_raw:
+        time_string = repr
+    else:
+        time_string = self.time_string
+
     for (path, layout) in streams:
         if not (fnmatch.fnmatch(path, self.args.path) and
                 fnmatch.fnmatch(layout, self.args.layout)):
@@ -46,9 +71,7 @@ def cmd_list(self):
         printed = False
         for (start, end) in self.client.stream_intervals(path, self.args.start,
                                                          self.args.end):
-            printf("  [ %s -> %s ]\n",
-                   self.time_string(start),
-                   self.time_string(end))
+            printf("  [ %s -> %s ]\n", time_string(start), time_string(end))
             printed = True
         if not printed:
             printf("  (no intervals)\n")

nilmdb/cmdline/metadata.py

@@ -1,5 +1,5 @@
-from __future__ import absolute_import
 from nilmdb.utils.printf import *
+import nilmdb
 import nilmdb.client
 
 def setup(self, sub):
@@ -43,21 +43,21 @@ def cmd_metadata(self):
         for keyval in keyvals:
             kv = keyval.split('=')
             if len(kv) != 2 or kv[0] == "":
-                self.die("Error parsing key=value argument '%s'", keyval)
+                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))
+            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))
+            self.die("error getting metadata: %s", str(e))
         for key, value in sorted(data.items()):
             # Omit nonexistant keys
             if value is None:

nilmdb/cmdline/remove.py

@@ -0,0 +1,43 @@
+from nilmdb.utils.printf import *
+import nilmdb
+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(verify = cmd_remove_verify,
+                     handler = cmd_remove)
+
+    group = cmd.add_argument_group("Data selection")
+    group.add_argument("path",
+                       help="Path of stream, e.g. /foo/bar")
+    group.add_argument("-s", "--start", required=True,
+                       metavar="TIME", type=self.arg_time,
+                       help="Starting timestamp (free-form, inclusive)")
+    group.add_argument("-e", "--end", required=True,
+                       metavar="TIME", type=self.arg_time,
+                       help="Ending timestamp (free-form, noninclusive)")
+
+    group = cmd.add_argument_group("Output format")
+    group.add_argument("-c", "--count", action="store_true",
+                       help="Output number of data points removed")
+
+def cmd_remove_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_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/scripts/__init__.py

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

nilmdb/scripts/nilmdb_server.py

@@ -0,0 +1,81 @@
+#!/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 = 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
+    db = 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)
+
+    # Print info
+    if not args.quiet:
+        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

@@ -0,0 +1,10 @@
+#!/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

@@ -0,0 +1,22 @@
+"""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:
+    import Cython
+    import distutils.version
+    if (distutils.version.LooseVersion(Cython.__version__) <
+        distutils.version.LooseVersion("0.16")): # pragma: no cover
+        raise ImportError("Cython version too old")
+    import pyximport
+    pyximport.install(inplace = True, build_in_temp = False)
+except ImportError: # pragma: no cover
+    pass
+
+import nilmdb.server.layout
+from nilmdb.server.nilmdb import NilmDB
+from nilmdb.server.server import Server
+from nilmdb.server.errors import NilmDBError, StreamError, OverlapError

nilmdb/server/bulkdata.py

@@ -0,0 +1,459 @@
+# 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
+import nilmdb
+from nilmdb.utils.printf import *
+
+import os
+import cPickle as pickle
+import struct
+import mmap
+import re
+
+# 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 = True)
+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(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'
+        """
+        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")
+
+        # Get layout, and build format string for struct module
+        try:
+            layout = nilmdb.server.layout.get_named(layout_name)
+            struct_fmt = '<d'  # Little endian, double timestamp
+            struct_mapping = {
+                "int8": 'b',
+                "uint8": 'B',
+                "int16": 'h',
+                "uint16": 'H',
+                "int32": 'i',
+                "uint32": 'I',
+                "int64": 'q',
+                "uint64": 'Q',
+                "float32": 'f',
+                "float64": 'd',
+                }
+            struct_fmt += struct_mapping[layout.datatype] * layout.count
+        except KeyError:
+            raise ValueError("no such layout, or bad data types")
+
+        # Create the table.  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('/')
+        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)
+
+        # Make the final dir
+        ospath = os.path.join(self.root, *elements)
+        if os.path.isdir(ospath):
+            raise ValueError("subdirs of this path already exist")
+        os.mkdir(ospath)
+
+        # Write format string to file
+        Table.create(ospath, struct_fmt, self.file_size, self.files_per_dir)
+
+        # Open and cache it
+        self.getnode(unicodepath)
+
+        # Success
+        return
+
+    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 empty parent directories
+        for i in reversed(range(len(elements))):
+            ospath = os.path.join(self.root, *elements[0:i+1])
+            try:
+                os.rmdir(ospath)
+            except OSError:
+                break
+
+    # 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 = True)
+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 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, struct_fmt, file_size, files_per_dir):
+        """Initialize a table at the given OS path.
+        'struct_fmt' is a Struct module format description"""
+
+        # Calculate rows per file so that each file is approximately
+        # file_size bytes.
+        packer = struct.Struct(struct_fmt)
+        rows_per_file = max(file_size // packer.size, 1)
+
+        fmt = { "rows_per_file": rows_per_file,
+                "files_per_dir": files_per_dir,
+                "struct_fmt": struct_fmt,
+                "version": 1 }
+        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 and build packer
+        with open(os.path.join(self.root, "_format"), "rb") as f:
+            fmt = pickle.load(f)
+
+        if fmt["version"] != 1: # pragma: no cover (just future proofing)
+            raise NotImplementedError("version " + fmt["version"] +
+                                      " bulk data store not supported")
+
+        self.rows_per_file = fmt["rows_per_file"]
+        self.files_per_dir = fmt["files_per_dir"]
+        self.packer = struct.Struct(fmt["struct_fmt"])
+        self.file_size = self.packer.size * self.rows_per_file
+
+        # Find nrows
+        self.nrows = self._get_nrows()
+
+    def close(self):
+        self.mmap_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.packer.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.packer.size) != 0: # pragma: no cover; shouldn't occur
+            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.packer.size)
+        return row
+
+    # Cache open files
+    @nilmdb.utils.lru_cache(size = fd_cache_size,
+                            keys = slice(0, 3), # exclude newsize
+                            onremove = lambda x: x.close())
+    def mmap_open(self, subdir, filename, newsize = None):
+        """Open and map a given 'subdir/filename' (relative to self.root).
+        Will be automatically closed when evicted from the cache.
+
+        If 'newsize' is provided, the file is truncated to the given
+        size before the mapping is returned.  (Note that the LRU cache
+        on this function means the truncate will only happen if the
+        object isn't already cached; mmap.resize should be used too.)"""
+        try:
+            os.mkdir(os.path.join(self.root, subdir))
+        except OSError:
+            pass
+        f = open(os.path.join(self.root, subdir, filename), "a+", 0)
+        if newsize is not None:
+            # mmap can't map a zero-length file, so this allows the
+            # caller to set the filesize between file creation and
+            # mmap.
+            f.truncate(newsize)
+        mm = mmap.mmap(f.fileno(), 0)
+        return mm
+
+    def mmap_open_resize(self, subdir, filename, newsize):
+        """Open and map a given 'subdir/filename' (relative to self.root).
+        The file is resized to the given size."""
+        # Pass new size to mmap_open
+        mm = self.mmap_open(subdir, filename, newsize)
+        # In case we got a cached copy, need to call mm.resize too.
+        mm.resize(newsize)
+        return mm
+
+    def append(self, data):
+        """Append the data and flush it to disk.
+        data is a nested Python list [[row],[row],[...]]"""
+        remaining = len(data)
+        dataiter = iter(data)
+        while remaining:
+            # See how many rows we can fit into the current file, and open it
+            (subdir, fname, offset, count) = self._offset_from_row(self.nrows)
+            if count > remaining:
+                count = remaining
+            newsize = offset + count * self.packer.size
+            mm = self.mmap_open_resize(subdir, fname, newsize)
+            mm.seek(offset)
+
+            # Write the data
+            for i in xrange(count):
+                row = dataiter.next()
+                mm.write(self.packer.pack(*row))
+            remaining -= count
+            self.nrows += count
+
+    def __getitem__(self, key):
+        """Extract data and return it.  Supports simple indexing
+        (table[n]) and range slices (table[n:m]).  Returns a nested
+        Python list [[row],[row],[...]]"""
+
+        # Handle simple slices
+        if isinstance(key, slice):
+            # Fall back to brute force if the slice isn't simple
+            if ((key.step is not None and key.step != 1) or
+                key.start is None or
+                key.stop is None or
+                key.start >= key.stop or
+                key.start < 0 or
+                key.stop > self.nrows):
+                return [ self[x] for x in xrange(*key.indices(self.nrows)) ]
+
+            ret = []
+            row = key.start
+            remaining = key.stop - key.start
+            while remaining:
+                (subdir, filename, offset, count) = self._offset_from_row(row)
+                if count > remaining:
+                    count = remaining
+                mm = self.mmap_open(subdir, filename)
+                for i in xrange(count):
+                    ret.append(list(self.packer.unpack_from(mm, offset)))
+                    offset += self.packer.size
+                remaining -= count
+                row += count
+            return ret
+
+        # Handle single points
+        if key < 0 or key >= self.nrows:
+            raise IndexError("Index out of range")
+        (subdir, filename, offset, count) = self._offset_from_row(key)
+        mm = self.mmap_open(subdir, filename)
+        # unpack_from ignores the mmap object's current seek position
+        return list(self.packer.unpack_from(mm, offset))
+
+    def _remove_rows(self, subdir, filename, start, stop):
+        """Helper to mark specific rows as being removed from a
+        file, and potentially removing or truncating the file itself."""
+        # Import an existing list of deleted rows for this file
+        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):
+            # Close potentially open file in mmap_open LRU cache
+            self.mmap_open.cache_remove(self, subdir, filename)
+
+            # Delete files
+            os.remove(datafile)
+            if cachefile_present:
+                os.remove(cachefile)
+
+            # Try deleting subdir, too
+            try:
+                os.rmdir(os.path.join(self.root, subdir))
+            except:
+                pass
+        else:
+            # 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.packer.size
+            # Mark the rows as being removed
+            self._remove_rows(subdir, filename, row_offset, row_offset + count)
+            remaining -= count
+            row += count
+
+class TimestampOnlyTable(object):
+    """Helper that lets us pass a Tables object into bisect, by
+    returning only the timestamp when a particular row is requested."""
+    def __init__(self, table):
+        self.table = table
+    def __getitem__(self, index):
+        return self.table[index][0]

nilmdb/server/errors.py

@@ -0,0 +1,12 @@
+"""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

@@ -37,6 +37,7 @@ cdef class Interval:
         'start' and 'end' are arbitrary floats 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 = float(start)
         self.end = float(end)
@@ -278,7 +279,7 @@ cdef class IntervalSet:
 
         return out
 
-    def intersection(self, Interval interval not None):
+    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.
@@ -287,6 +288,10 @@ cdef class IntervalSet:
 
         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")
@@ -294,10 +299,16 @@ cdef class IntervalSet:
             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
 
     cpdef intersects(self, Interval other):

nilmdb/server/layout.pyx

@@ -170,7 +170,7 @@ class Parser(object):
                 if line[0] == '\#':
                     continue
                 (ts, row) = self.layout.parse(line)
-                if ts < last_ts:
+                if ts <= last_ts:
                     raise ValueError("timestamp is not "
                                      "monotonically increasing")
                 last_ts = ts

nilmdb/server/nilmdb.py

@@ -7,25 +7,21 @@ 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 nilmdb module instead.
+# 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
 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 time
-import sys
 import os
 import errno
 import bisect
 
-import pyximport
-pyximport.install()
-from nilmdb.interval import Interval, DBInterval, IntervalSet, IntervalError
-
-from . import bulkdata
-
 # Note about performance and transactions:
 #
 # Committing a transaction in the default sync mode (PRAGMA synchronous=FULL)
@@ -77,22 +73,15 @@ _sql_schema_updates = {
     """,
 }
 
-class NilmDBError(Exception):
-    """Base exception for NilmDB errors"""
-    def __init__(self, message = "Unspecified error"):
-        Exception.__init__(self, self.__class__.__name__ + ": " + message)
-
-class StreamError(NilmDBError):
-    pass
-
-class OverlapError(NilmDBError):
-    pass
-
 @nilmdb.utils.must_close()
 class NilmDB(object):
     verbose = 0
 
-    def __init__(self, basepath, sync=True, max_results=None):
+    def __init__(self, basepath, sync=True, max_results=None,
+                 bulkdata_args=None):
+        if bulkdata_args is None:
+            bulkdata_args = {}
+
         # set up path
         self.basepath = os.path.abspath(basepath)
 
@@ -104,7 +93,7 @@ class NilmDB(object):
                 raise IOError("can't create tree " + self.basepath)
 
         # Our data goes inside it
-        self.data = bulkdata.BulkData(self.basepath)
+        self.data = bulkdata.BulkData(self.basepath, **bulkdata_args)
 
         # SQLite database too
         sqlfilename = os.path.join(self.basepath, "data.sql")
@@ -168,11 +157,25 @@ class NilmDB(object):
                 iset += DBInterval(start_time, end_time,
                                    start_time, end_time,
                                    start_pos, end_pos)
-        except IntervalError as e: # pragma: no cover
+        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.
@@ -191,7 +194,7 @@ class NilmDB(object):
         # 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 = 30000000 # a bit more than 1 hour at 8 KHz
+        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
@@ -199,14 +202,9 @@ class NilmDB(object):
             # First delete the old one, both from our iset and the
             # database
             iset -= adjacent
-            self.con.execute("DELETE FROM ranges WHERE "
-                             "stream_id=? AND start_time=? AND "
-                             "end_time=? AND start_pos=? AND "
-                             "end_pos=?", (stream_id,
-                                           adjacent.db_start,
-                                           adjacent.db_end,
-                                           adjacent.db_startpos,
-                                           adjacent.db_endpos))
+            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.
@@ -219,14 +217,54 @@ class NilmDB(object):
                                      start_pos, end_pos))
 
         # Insert into the database
-        self.con.execute("INSERT INTO ranges "
-                         "(stream_id,start_time,end_time,start_pos,end_pos) "
-                         "VALUES (?,?,?,?,?)",
-                         (stream_id, interval.start, interval.end,
-                          int(start_pos), int(end_pos)))
+        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):
         """Return list of [path, layout] lists of all streams
         in the database.
@@ -341,7 +379,7 @@ class NilmDB(object):
         No way to undo it!  Metadata is removed."""
         stream_id = self._stream_id(path)
 
-        # Delete the cached interval data
+        # Delete the cached interval data (if it was cached)
         self._get_intervals.cache_remove(self, stream_id)
 
         # Delete the data
@@ -381,7 +419,7 @@ class NilmDB(object):
         # And that's all
         return "ok"
 
-    def _find_start(self, table, interval):
+    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
@@ -389,14 +427,14 @@ class NilmDB(object):
         equal to 'start'.
         """
         # Optimization for the common case where an interval wasn't truncated
-        if interval.start == interval.db_start:
-            return interval.db_startpos
+        if dbinterval.start == dbinterval.db_start:
+            return dbinterval.db_startpos
         return bisect.bisect_left(bulkdata.TimestampOnlyTable(table),
-                                  interval.start,
-                                  interval.db_startpos,
-                                  interval.db_endpos)
+                                  dbinterval.start,
+                                  dbinterval.db_startpos,
+                                  dbinterval.db_endpos)
 
-    def _find_end(self, table, interval):
+    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
@@ -404,16 +442,16 @@ class NilmDB(object):
         to 'end'.
         """
         # Optimization for the common case where an interval wasn't truncated
-        if interval.end == interval.db_end:
-            return interval.db_endpos
+        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(bulkdata.TimestampOnlyTable(table),
-                                  interval.end,
-                                  interval.db_startpos,
-                                  interval.db_endpos)
+                                  dbinterval.end,
+                                  dbinterval.db_startpos,
+                                  dbinterval.db_endpos)
 
     def stream_extract(self, path, start = None, end = None, count = False):
         """
@@ -434,8 +472,8 @@ class NilmDB(object):
         than actually fetching the data.  It is not limited by
         max_results.
         """
-        table = self.data.getnode(path)
         stream_id = self._stream_id(path)
+        table = self.data.getnode(path)
         intervals = self._get_intervals(stream_id)
         requested = Interval(start or 0, end or 1e12)
         result = []
@@ -472,3 +510,45 @@ class NilmDB(object):
         if count:
             return matched
         return (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)
+        to_remove = Interval(start or 0, end or 1e12)
+        removed = 0
+
+        if start == end:
+            return 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/server.py

@@ -1,20 +1,20 @@
 """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.
+# 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
-from nilmdb.utils.printf import *
 import nilmdb
+from nilmdb.utils.printf import *
+from nilmdb.server.errors import NilmDBError
 
 import cherrypy
 import sys
-import time
 import os
 import simplejson as json
-import functools
+import decorator
+import traceback
 
 try:
-    import cherrypy
     cherrypy.tools.json_out
 except: # pragma: no cover
     sys.stderr.write("Cherrypy 3.2+ required\n")
@@ -24,54 +24,64 @@ class NilmApp(object):
     def __init__(self, db):
         self.db = db
 
-version = "1.1"
-
 # Decorators
 def chunked_response(func):
-    """Decorator to enable chunked responses"""
+    """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 workaround_cp_bug_1200(func): # pragma: no cover (just a workaround)
+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, you may still miss miss
-    # LookupError, or UnicodeError exceptions due to CherryPy bug
-    # #1200.  This throws them as generic Exceptions insteads.
-    import traceback
-    @functools.wraps(func)
-    def wrapper(*args, **kwargs):
+    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.
+    """
     try:
         for val in func(*args, **kwargs):
             yield val
-        except (LookupError, UnicodeError) as e:
+    except (LookupError, UnicodeError):
         raise Exception("bug workaround; real exception is:\n" +
                         traceback.format_exc())
-    return wrapper
 
-def exception_to_httperror(response = "400 Bad Request"):
-    """Return a decorator that catches Exception and throws
-    a HTTPError describing it instead"""
-    def decorator(func):
-        @functools.wraps(func)
-        def wrapper(*args, **kwargs):
+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):
         try:
             return func(*args, **kwargs)
-            except Exception as e:
-                message = sprintf("%s: %s", type(e).__name__, str(e))
-                raise cherrypy.HTTPError(response, message)
-        return wrapper
-    return decorator
+        except expected as e:
+            message = sprintf("%s", str(e))
+            raise cherrypy.HTTPError("400 Bad Request", message)
+    # 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)
 
 # CherryPy apps
 class Root(NilmApp):
     """Root application for NILM database"""
 
-    def __init__(self, db, version):
+    def __init__(self, db):
         super(Root, self).__init__(db)
-        self.server_version = version
 
     # /
     @cherrypy.expose
@@ -87,7 +97,7 @@ class Root(NilmApp):
     @cherrypy.expose
     @cherrypy.tools.json_out()
     def version(self):
-        return self.server_version
+        return nilmdb.__version__
 
     # /dbpath
     @cherrypy.expose
@@ -118,7 +128,7 @@ class Stream(NilmApp):
     # /stream/create?path=/newton/prep&layout=PrepData
     @cherrypy.expose
     @cherrypy.tools.json_out()
-    @exception_to_httperror()
+    @exception_to_httperror(NilmDBError, ValueError)
     def create(self, path, layout):
         """Create a new stream in the database.  Provide path
         and one of the nilmdb.layout.layouts keys.
@@ -128,7 +138,7 @@ class Stream(NilmApp):
     # /stream/destroy?path=/newton/prep
     @cherrypy.expose
     @cherrypy.tools.json_out()
-    @exception_to_httperror()
+    @exception_to_httperror(NilmDBError)
     def destroy(self, path):
         """Delete a stream and its associated data."""
         return self.db.stream_destroy(path)
@@ -143,7 +153,7 @@ class Stream(NilmApp):
         matching the given keys."""
         try:
             data = self.db.stream_get_metadata(path)
-        except nilmdb.nilmdb.StreamError as e:
+        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()
@@ -160,7 +170,7 @@ class Stream(NilmApp):
     # /stream/set_metadata?path=/newton/prep&data=<json>
     @cherrypy.expose
     @cherrypy.tools.json_out()
-    @exception_to_httperror()
+    @exception_to_httperror(NilmDBError, LookupError, TypeError)
     def set_metadata(self, path, data):
         """Set metadata for the named stream, replacing any
         existing metadata.  Data should be a json-encoded
@@ -172,7 +182,7 @@ class Stream(NilmApp):
     # /stream/update_metadata?path=/newton/prep&data=<json>
     @cherrypy.expose
     @cherrypy.tools.json_out()
-    @exception_to_httperror()
+    @exception_to_httperror(NilmDBError, LookupError, TypeError)
     def update_metadata(self, path, data):
         """Update metadata for the named stream.  Data
         should be a json-encoded dictionary"""
@@ -206,11 +216,11 @@ class Stream(NilmApp):
 
         # Parse the input data
         try:
-            parser = nilmdb.layout.Parser(layout)
+            parser = nilmdb.server.layout.Parser(layout)
             parser.parse(body)
-        except nilmdb.layout.ParserError as e:
+        except nilmdb.server.layout.ParserError as e:
             raise cherrypy.HTTPError("400 Bad Request",
-                                     "Error parsing input data: " +
+                                     "error parsing input data: " +
                                      e.message)
 
         if (not parser.min_timestamp or not parser.max_timestamp or
@@ -232,23 +242,49 @@ class Stream(NilmApp):
 
         # Now do the nilmdb insert, passing it the parser full of data.
         try:
-            result = self.db.stream_insert(path, start, end, parser.data)
-        except nilmdb.nilmdb.NilmDBError as e:
+            self.db.stream_insert(path, start, end, parser.data)
+        except NilmDBError as e:
             raise cherrypy.HTTPError("400 Bad Request", e.message)
 
         # Done
         return "ok"
 
+    # /stream/remove?path=/newton/prep
+    # /stream/remove?path=/newton/prep&start=1234567890.0&end=1234567899.0
+    @cherrypy.expose
+    @cherrypy.tools.json_out()
+    @exception_to_httperror(NilmDBError)
+    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 = float(start)
+        if end is not None:
+            end = float(end)
+        if start is not None and end is not None:
+            if end < start:
+                raise cherrypy.HTTPError("400 Bad Request",
+                                         "end before start")
+        return self.db.stream_remove(path, start, end)
+
     # /stream/intervals?path=/newton/prep
     # /stream/intervals?path=/newton/prep&start=1234567890.0&end=1234567899.0
     @cherrypy.expose
     @chunked_response
+    @response_type("text/plain")
     def intervals(self, path, start = None, end = None):
         """
         Get intervals from backend database.  Streams the resulting
         intervals as JSON strings separated by newlines.  This may
         make multiple requests to the nilmdb backend to avoid causing
         it to block for too long.
+
+        Note that the response type is set to 'text/plain' even
+        though we're sending back JSON; this is because we're not
+        really returning a single JSON object.
         """
         if start is not None:
             start = float(start)
@@ -279,6 +315,7 @@ class Stream(NilmApp):
     # /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
@@ -306,7 +343,7 @@ class Stream(NilmApp):
         layout = streams[0][1]
 
         # Get formatter
-        formatter = nilmdb.layout.Formatter(layout)
+        formatter = nilmdb.server.layout.Formatter(layout)
 
         @workaround_cp_bug_1200
         def content(start, end, count):
@@ -345,32 +382,53 @@ class Server(object):
                  fast_shutdown = False,   # don't wait for clients to disconn.
                  force_traceback = False  # include traceback in all errors
                  ):
-        self.version = version
+        # Save server version, just for verification during tests
+        self.version = nilmdb.__version__
 
         # Need to wrap DB object in a serializer because we'll call
         # into it from separate threads.
         self.embedded = embedded
         self.db = nilmdb.utils.Serializer(db)
+
+        # 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': 4*1024*1024,
-            'error_page.default': self.json_error_page,
             })
         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,
+            })
+
+        # Send a permissive Access-Control-Allow-Origin (CORS) header
+        # with all responses so that browsers can send cross-domain
+        # requests to this server.
+        app_config.update({ 'response.headers.Access-Control-Allow-Origin':
+                            '*' })
+
         # Send tracebacks in error responses.  They're hidden by the
         # error_page function for client errors (code 400-499).
-        cherrypy.config.update({ 'request.show_tracebacks' : True })
+        app_config.update({ 'request.show_tracebacks' : True })
         self.force_traceback = force_traceback
 
-        cherrypy.tree.apps = {}
-        cherrypy.tree.mount(Root(self.db, self.version), "/")
-        cherrypy.tree.mount(Stream(self.db), "/stream")
+        # 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:
-            cherrypy.tree.mount(Exiter(), "/exit")
+            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
@@ -391,7 +449,7 @@ class Server(object):
             if not self.force_traceback:
                 if code >= 400 and code <= 499:
                     errordata["traceback"] = ""
-        except Exception as e: # pragma: no cover
+        except Exception: # pragma: no cover
             pass
         # Override the response type, which was previously set to text/html
         cherrypy.serving.response.headers['Content-Type'] = (
@@ -428,8 +486,10 @@ class Server(object):
         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,

nilmdb/utils/__init__.py

@@ -1,9 +1,11 @@
 """NilmDB utilities"""
 
-from .timer import Timer
-from .iteratorizer import Iteratorizer
-from .serializer import Serializer
-from .lrucache import lru_cache
-from .diskusage import du
-from .mustclose import must_close
-from .urllib import urlencode
+from nilmdb.utils.timer import Timer
+from nilmdb.utils.iteratorizer import Iteratorizer
+from nilmdb.utils.serializer import Serializer
+from nilmdb.utils.lrucache import lru_cache
+from nilmdb.utils.diskusage import du
+from nilmdb.utils.mustclose import must_close
+from nilmdb.utils.urllib import urlencode
+from nilmdb.utils import misc
+from nilmdb.utils import atomic

nilmdb/utils/atomic.py

@@ -0,0 +1,26 @@
+# 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/diskusage.py

@@ -1,4 +1,3 @@
-import nilmdb
 import os
 from math import log
 
@@ -20,8 +19,8 @@ def du_bytes(path):
     """Like du -sb, returns total size of path in bytes."""
     size = os.path.getsize(path)
     if os.path.isdir(path):
-        for file in os.listdir(path):
-            filepath = os.path.join(path, file)
+        for thisfile in os.listdir(path):
+            filepath = os.path.join(path, thisfile)
             size += du_bytes(filepath)
     return size
 

nilmdb/utils/iteratorizer.py

@@ -1,14 +1,16 @@
 import Queue
 import threading
 import sys
+import contextlib
 
-# This file provides a class that will convert a function that
-# takes a callback into a generator that returns an iterator.
+# 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):
+    def __init__(self, queue, function, curl_hack):
         """
         function: function to execute, which takes the
         callback (provided by this class) as an argument
@@ -17,43 +19,57 @@ class IteratorizerThread(threading.Thread):
         self.function = function
         self.queue = queue
         self.die = False
+        self.curl_hack = curl_hack
 
     def callback(self, data):
+        try:
             if self.die:
-            raise Exception("should 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:
-            if sys is not None: # can be None during unclean shutdown
             self.queue.put((2, sys.exc_info()))
         else:
             self.queue.put((0, result))
 
-class Iteratorizer(object):
-    def __init__(self, function):
+@contextlib.contextmanager
+def Iteratorizer(function, curl_hack = False):
     """
-        function: function to execute, which takes the
-        callback (provided by this class) as an argument
-        """
-        self.function = function
-        self.queue = Queue.Queue(maxsize = 1)
-        self.thread = IteratorizerThread(self.queue, self.function)
-        self.thread.daemon = True
-        self.thread.start()
+    Context manager that takes a function expecting a callback,
+    and provides an iterable that yields the values passed to that
+    callback instead.
 
-    def __del__(self):
-        # If we get garbage collected, try to get rid of the
-        # thread too by asking it to raise an exception, then
-        # draining the queue until it's gone.
-        self.thread.die = True
-        while self.thread.isAlive():
-            try:
-                self.queue.get(True, 0.01)
-            except: # pragma: no cover
-                pass
+    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
@@ -61,12 +77,23 @@ class Iteratorizer(object):
         def next(self):
             (typ, data) = self.queue.get()
             if typ == 0:
-            # function returned
+                # function has returned
                 self.retval = data
                 raise StopIteration
             elif typ == 1:
-            # data available
+                # data is available
                 return data
             else:
-            # exception
+                # 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

@@ -4,17 +4,18 @@
 # with added 'destructor' functionality.
 
 import collections
-import functools
+import decorator
 
-def lru_cache(size = 10, onremove = None):
+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.
+    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.
@@ -24,43 +25,52 @@ def lru_cache(size = 10, onremove = None):
     f.cache_hits and f.cache_misses give statistics.
     """
 
-    def decorator(func):
+    def decorate(func):
         cache = collections.OrderedDict()	# order: least- to most-recent
 
         def evict(value):
             if onremove:
                 onremove(value)
 
-        @functools.wraps(func)
-        def wrapper(*args, **kwargs):
-            key = args + tuple(sorted(kwargs.items()))
+        def wrapper(orig, *args, **kwargs):
+            if kwargs:
+                raise NotImplementedError("kwargs not supported")
+            key = args[keys]
             try:
                 value = cache.pop(key)
-                wrapper.cache_hits += 1
+                orig.cache_hits += 1
             except KeyError:
-                value = func(*args, **kwargs)
-                wrapper.cache_misses += 1
+                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, **kwargs):
-            """Remove the described key from this cache, if present.
-            Note that if the original wrapped function was implicitly
-            passed 'self', you need to pass it as an argument here too."""
-            key = args + tuple(sorted(kwargs.items()))
+        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))
 
-        wrapper.cache_hits = 0
-        wrapper.cache_misses = 0
-        wrapper.cache_remove = cache_remove
-        wrapper.cache_remove_all = cache_remove_all
+        def cache_info():
+            return (func.cache_hits, func.cache_misses)
 
-        return wrapper
-    return decorator
+        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/misc.py

@@ -0,0 +1,8 @@
+import itertools
+
+def pairwise(iterable):
+    "s -> (s0,s1), (s1,s2), ..., (sn,None)"
+    a, b = itertools.tee(iterable)
+    next(b, None)
+    return itertools.izip_longest(a, b)
+

nilmdb/utils/mustclose.py

@@ -1,42 +1,63 @@
-# Class decorator that warns on stderr at deletion time if the class's
-# close() member wasn't called.
-
 from nilmdb.utils.printf import *
 import sys
+import inspect
+import decorator
 
-def must_close(errorfile = sys.stderr):
-    def decorator(cls):
-        def dummy(*args, **kwargs):
-            pass
-        if "__init__" not in cls.__dict__:
-            cls.__init__ = dummy
-        if "__del__" not in cls.__dict__:
-            cls.__del__ = dummy
-        if "close" not in cls.__dict__:
-            cls.close = dummy
+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.
 
-        orig_init = cls.__init__
-        orig_del = cls.__del__
-        orig_close = cls.close
+    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 __init__(self, *args, **kwargs):
-            ret = orig_init(self, *args, **kwargs)
+        # Helper to replace a class method with a wrapper function,
+        # while maintaining argument specs etc.
+        def wrap_class_method(wrapper_func):
+            method = wrapper_func.__name__
+            if method in cls.__dict__:
+                orig = getattr(cls, method).im_func
+            else:
+                orig = lambda self: None
+            setattr(cls, method, decorator.decorator(wrapper_func, 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
 
-        def __del__(self):
+        @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_del(self)
+            return orig(self, *args, **kwargs)
 
-        def close(self, *args, **kwargs):
+        @wrap_class_method
+        def close(orig, self, *args, **kwargs):
             del self._must_close
-            return orig_close(self)
+            return orig(self, *args, **kwargs)
 
-        cls.__init__ = __init__
-        cls.__del__ = __del__
-        cls.close = close
+        # 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 decorator
+    return class_decorator

nilmdb/utils/timer.py

@@ -2,7 +2,7 @@
 
 # Simple timer to time a block of code, for optimization debugging
 # use like:
-#   with nilmdb.Timer("flush"):
+#   with nilmdb.utils.Timer("flush"):
 #       foo.flush()
 
 from __future__ import print_function

nilmdb/utils/timestamper.py

@@ -1,22 +1,18 @@
 """File-like objects that add timestamps to the input lines"""
 
-from __future__ import absolute_import
 from nilmdb.utils.printf import *
-
-import time
-import os
-import datetime_tz
+from nilmdb.utils import datetime_tz
 
 class Timestamper(object):
     """A file-like object that adds timestamps to lines of an input file."""
-    def __init__(self, file, ts_iter):
+    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(file, basestring):
-            self.file = open(file, "r")
+        if isinstance(infile, basestring):
+            self.file = open(infile, "r")
         else:
-            self.file = file
+            self.file = infile
         self.ts_iter = ts_iter
 
     def close(self):
@@ -55,7 +51,7 @@ class Timestamper(object):
 
 class TimestamperRate(Timestamper):
     """Timestamper that uses a start time and a fixed rate"""
-    def __init__(self, file, start, rate, end = None):
+    def __init__(self, infile, start, rate, end = None):
         """
         file: file name or object
 
@@ -77,7 +73,7 @@ class TimestamperRate(Timestamper):
         # Handle case where we're passed a datetime or datetime_tz object
         if "totimestamp" in dir(start):
             start = start.totimestamp()
-        Timestamper.__init__(self, file, iterator(start, rate, end))
+        Timestamper.__init__(self, infile, iterator(start, rate, end))
         self.start = start
         self.rate = rate
     def __str__(self):
@@ -88,21 +84,21 @@ class TimestamperRate(Timestamper):
 
 class TimestamperNow(Timestamper):
     """Timestamper that uses current time"""
-    def __init__(self, file):
+    def __init__(self, infile):
         def iterator():
             while True:
                 now = datetime_tz.datetime_tz.utcnow().totimestamp()
                 yield sprintf("%.6f ", now)
-        Timestamper.__init__(self, file, iterator())
+        Timestamper.__init__(self, infile, iterator())
     def __str__(self):
         return "TimestamperNow(...)"
 
 class TimestamperNull(Timestamper):
     """Timestamper that adds nothing to each line"""
-    def __init__(self, file):
+    def __init__(self, infile):
         def iterator():
             while True:
                 yield ""
-        Timestamper.__init__(self, file, iterator())
+        Timestamper.__init__(self, infile, iterator())
     def __str__(self):
         return "TimestamperNull(...)"

nilmdb/utils/urllib.py

@@ -1,56 +1,25 @@
 from __future__ import absolute_import
 from urllib import quote_plus, _is_unicode
 
-# urllib.urlencode insists on encoding Unicode as ASCII.  This is an
-# exact copy of that function, except we encode it as UTF-8 instead.
+# urllib.urlencode insists on encoding Unicode as ASCII.  This is based
+# on that function, except we always encode it as UTF-8 instead.
 
-def urlencode(query, doseq=0):
-    """Encode a sequence of two-element tuples or dictionary into a URL query string.
+def urlencode(query):
+    """Encode a dictionary into a URL query string.
 
-    If any values in the query arg are sequences and doseq is true, each
-    sequence element is converted to a separate parameter.
-
-    If the query arg is a sequence of two-element tuples, the order of the
-    parameters in the output will match the order of parameters in the
-    input.
+    If any values in the query arg are sequences, each sequence
+    element is converted to a separate parameter.
     """
 
-    if hasattr(query,"items"):
-        # mapping objects
     query = query.items()
-    else:
-        # it's a bother at times that strings and string-like objects are
-        # sequences...
-        try:
-            # non-sequence items should not work with len()
-            # non-empty strings will fail this
-            if len(query) and not isinstance(query[0], tuple):
-                raise TypeError
-            # zero-length sequences of all types will get here and succeed,
-            # but that's a minor nit - since the original implementation
-            # allowed empty dicts that type of behavior probably should be
-            # preserved for consistency
-        except TypeError:
-            ty,va,tb = sys.exc_info()
-            raise TypeError, "not a valid non-string sequence or mapping object", tb
 
     l = []
-    if not doseq:
-        # preserve old behavior
-        for k, v in query:
-            k = quote_plus(str(k))
-            v = quote_plus(str(v))
-            l.append(k + '=' + v)
-    else:
     for k, v in query:
         k = quote_plus(str(k))
         if isinstance(v, str):
             v = quote_plus(v)
             l.append(k + '=' + v)
         elif _is_unicode(v):
-                # is there a reasonable way to convert to ASCII?
-                # encode generates a string, but "replace" or "ignore"
-                # lose information and "strict" can raise UnicodeError
             v = quote_plus(v.encode("utf-8","strict"))
             l.append(k + '=' + v)
         else:

nilmtool.py

@@ -1,6 +0,0 @@
-#!/usr/bin/python
-
-import nilmdb
-import sys
-
-nilmdb.cmdline.Cmdline(sys.argv[1:]).run()

runserver.py

@@ -1,35 +0,0 @@
-#!/usr/bin/python
-
-import nilmdb
-import argparse
-
-formatter = argparse.ArgumentDefaultsHelpFormatter
-parser = argparse.ArgumentParser(description='Run the NILM server',
-                                 formatter_class = formatter)
-parser.add_argument('-p', '--port', help='Port number', type=int, default=12380)
-parser.add_argument('-d', '--database', help='Database directory', default="db")
-parser.add_argument('-y', '--yappi', help='Run with yappi profiler',
-                    action='store_true')
-args = parser.parse_args()
-
-# Start web app on a custom port
-db = nilmdb.NilmDB(args.database)
-server = nilmdb.Server(db, host = "127.0.0.1",
-                       port = args.port,
-                       embedded = False)
-
-
-if args.yappi:
-    print "Running in yappi"
-    try:
-        import yappi
-        yappi.start()
-        server.start(blocking = True)
-    finally:
-        yappi.stop()
-        print "Try: yappi.print_stats(sort_type=yappi.SORTTYPE_TTOT,limit=50)"
-        from IPython import embed
-        embed()
-else:
-    server.start(blocking = True)
-db.close()

setup.cfg

@@ -1,15 +1,26 @@
+[aliases]
+test = nosetests
+
 [nosetests]
-# note: the value doesn't matter, that's why they're empty here
-nocapture=
-nologcapture=        # comment to see cherrypy logs on failure
-with-coverage=
-cover-inclusive=
+# 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=
-##cover-html=         # this works, puts html output in cover/ dir
-##cover-branches=     # need nose 1.1.3 for this
-stop=
+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_bulkdata.py
 #tests=tests/test_mustclose.py
 #tests=tests/test_lrucache.py
 #tests=tests/test_cmdline.py
@@ -23,6 +34,7 @@ verbosity=2
 #tests=tests/test_serializer.py
 #tests=tests/test_iteratorizer.py
 #tests=tests/test_client.py:TestClient.test_client_nilmdb
-#with-profile=
+#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

@@ -0,0 +1,134 @@
+#!/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
+
+# 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 = []
+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
+""")
+
+# 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',
+                           ],
+      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,
+      )

tests/data/extract-7

@@ -0,0 +1,124 @@
+# path: /newton/prep
+# layout: PrepData
+# start: 1332496830.0
+# end: 1332496830.999
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tests/data/prep-20120323T1002-first19lines

@@ -0,0 +1,19 @@
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+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

@@ -0,0 +1,11 @@
+1332497040.000000 2.56439e+05  2.24775e+05  2.92897e+03  4.66646e+03  7.58491e+03  3.57351e+03  -4.34171e+02  2.98819e+03  
+1332497040.010000 2.51903e+05  2.23202e+05  4.23696e+03  3.49363e+03  8.53493e+03  4.29416e+03  8.49573e+02  2.38189e+03  
+1332497040.020000 2.57625e+05  2.20247e+05  5.47017e+03  1.35872e+03  9.18903e+03  4.56136e+03  2.65599e+03  2.60912e+03  
+1332497040.030000 2.63375e+05  2.20706e+05  4.51842e+03  1.80758e+03  8.17208e+03  4.17463e+03  2.57884e+03  3.32848e+03  
+1332497040.040000 2.59221e+05  2.22346e+05  2.98879e+03  3.66264e+03  6.87274e+03  3.94223e+03  1.25928e+03  3.51786e+03  
+1332497040.050000 2.51918e+05  2.22281e+05  4.22677e+03  2.84764e+03  7.78323e+03  3.81659e+03  8.04944e+02  3.46314e+03  
+1332497040.050000 2.54478e+05  2.21701e+05  5.61366e+03  1.02262e+03  9.26581e+03  3.50152e+03  1.29331e+03  3.07271e+03  
+1332497040.060000 2.59568e+05  2.22945e+05  4.97190e+03  1.28250e+03  8.62081e+03  4.06316e+03  1.85717e+03  2.61990e+03  
+1332497040.070000 2.57269e+05  2.23697e+05  3.60527e+03  3.05749e+03  7.22363e+03  4.90330e+03  1.93736e+03  2.35357e+03  
+1332497040.080000 2.52274e+05  2.21438e+05  5.01228e+03  2.86309e+03  7.87115e+03  4.80448e+03  2.18291e+03  2.93397e+03  
+1332497040.090000 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

@@ -0,0 +1,49 @@
+#!/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

@@ -0,0 +1,18 @@
+test_printf.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

@@ -0,0 +1,102 @@
+# -*- 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")
+        with assert_raises(ValueError):
+            data.create("/foo/bar", "uint8_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
+
+        # Test node
+        node = data.getnode("/foo/bar")
+        with assert_raises(IndexError):
+            x = node[0]
+        raw = []
+        for i in range(1000):
+            raw.append([10000+i, 1, 2, 3, 4, 5, 6, 7, 8 ])
+        node.append(raw[0:1])
+        node.append(raw[1:100])
+        node.append(raw[100:])
+
+        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_(node[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_(node[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()

tests/test_client.py

@@ -2,9 +2,9 @@
 
 import nilmdb
 from nilmdb.utils.printf import *
+from nilmdb.utils import timestamper
 from nilmdb.client import ClientError, ServerError
-
-import datetime_tz
+from nilmdb.utils import datetime_tz
 
 from nose.tools import *
 from nose.tools import assert_raises
@@ -17,8 +17,9 @@ import cStringIO
 import simplejson as json
 import unittest
 import warnings
+import resource
 
-from test_helpers import *
+from testutil.helpers import *
 
 testdb = "tests/client-testdb"
 
@@ -66,10 +67,14 @@ class TestClient(object):
         # Now use the real URL
         client = nilmdb.Client(url = "http://localhost:12380/")
         version = client.version()
-        eq_(distutils.version.StrictVersion(version),
-            distutils.version.StrictVersion(test_server.version))
+        eq_(distutils.version.LooseVersion(version),
+            distutils.version.LooseVersion(test_server.version))
 
-    def test_client_2_nilmdb(self):
+        # Bad URLs should give 404, not 500
+        with assert_raises(ClientError):
+            client.http.get("/stream/create")
+
+    def test_client_2_createlist(self):
         # Basic stream tests, like those in test_nilmdb:test_stream
         client = nilmdb.Client(url = "http://localhost:12380/")
 
@@ -99,6 +104,20 @@ class TestClient(object):
         eq_(client.stream_list(layout="RawData"), [ ["/newton/raw", "RawData"] ])
         eq_(client.stream_list(path="/newton/raw"), [ ["/newton/raw", "RawData"] ])
 
+        # Try messing with resource limits to trigger errors and get
+        # more coverage.  Here, make it so we can only create files 1
+        # byte in size, which will trigger an IOError in the server when
+        # we create a table.
+        limit = resource.getrlimit(resource.RLIMIT_FSIZE)
+        resource.setrlimit(resource.RLIMIT_FSIZE, (1, limit[1]))
+        with assert_raises(ServerError) as e:
+            client.stream_create("/newton/hello", "RawData")
+        resource.setrlimit(resource.RLIMIT_FSIZE, limit)
+
+
+    def test_client_3_metadata(self):
+        client = nilmdb.Client(url = "http://localhost:12380/")
+
         # Set / get metadata
         eq_(client.stream_get_metadata("/newton/prep"), {})
         eq_(client.stream_get_metadata("/newton/raw"), {})
@@ -128,7 +147,7 @@ class TestClient(object):
         with assert_raises(ClientError):
             client.stream_update_metadata("/newton/prep", [1,2,3])
 
-    def test_client_3_insert(self):
+    def test_client_4_insert(self):
         client = nilmdb.Client(url = "http://localhost:12380/")
 
         datetime_tz.localtz_set("America/New_York")
@@ -139,13 +158,13 @@ class TestClient(object):
         rate = 120
 
         # First try a nonexistent path
-        data = nilmdb.timestamper.TimestamperRate(testfile, start, 120)
+        data = timestamper.TimestamperRate(testfile, start, 120)
         with assert_raises(ClientError) as e:
             result = client.stream_insert("/newton/no-such-path", data)
         in_("404 Not Found", str(e.exception))
 
         # Now try reversed timestamps
-        data = nilmdb.timestamper.TimestamperRate(testfile, start, 120)
+        data = timestamper.TimestamperRate(testfile, start, 120)
         data = reversed(list(data))
         with assert_raises(ClientError) as e:
             result = client.stream_insert("/newton/prep", data)
@@ -154,7 +173,7 @@ class TestClient(object):
 
         # Now try empty data (no server request made)
         empty = cStringIO.StringIO("")
-        data = nilmdb.timestamper.TimestamperRate(empty, start, 120)
+        data = timestamper.TimestamperRate(empty, start, 120)
         result = client.stream_insert("/newton/prep", data)
         eq_(result, None)
 
@@ -166,7 +185,7 @@ class TestClient(object):
         in_("no data provided", str(e.exception))
 
         # Specify start/end (starts too late)
-        data = nilmdb.timestamper.TimestamperRate(testfile, start, 120)
+        data = timestamper.TimestamperRate(testfile, start, 120)
         with assert_raises(ClientError) as e:
             result = client.stream_insert("/newton/prep", data,
                                           start + 5, start + 120)
@@ -175,7 +194,7 @@ class TestClient(object):
             str(e.exception))
 
         # Specify start/end (ends too early)
-        data = nilmdb.timestamper.TimestamperRate(testfile, start, 120)
+        data = timestamper.TimestamperRate(testfile, start, 120)
         with assert_raises(ClientError) as e:
             result = client.stream_insert("/newton/prep", data,
                                           start, start + 1)
@@ -186,7 +205,7 @@ class TestClient(object):
             str(e.exception))
 
         # Now do the real load
-        data = nilmdb.timestamper.TimestamperRate(testfile, start, 120)
+        data = timestamper.TimestamperRate(testfile, start, 120)
         result = client.stream_insert("/newton/prep", data,
                                       start, start + 119.999777)
         eq_(result, "ok")
@@ -197,20 +216,23 @@ class TestClient(object):
         eq_(intervals, [[start, start + 119.999777]])
 
         # Try some overlapping data -- just insert it again
-        data = nilmdb.timestamper.TimestamperRate(testfile, start, 120)
+        data = timestamper.TimestamperRate(testfile, start, 120)
         with assert_raises(ClientError) as e:
             result = client.stream_insert("/newton/prep", data)
         in_("400 Bad Request", str(e.exception))
-        in_("OverlapError", str(e.exception))
+        in_("verlap", str(e.exception))
 
-    def test_client_4_extract(self):
-        # Misc tests for extract.  Most of them are in test_cmdline.
+    def test_client_5_extractremove(self):
+        # Misc tests for extract and remove.  Most of them are in test_cmdline.
         client = nilmdb.Client(url = "http://localhost:12380/")
 
         for x in client.stream_extract("/newton/prep", 123, 123):
-            raise Exception("shouldn't be any data for this request")
+            raise AssertionError("shouldn't be any data for this request")
 
-    def test_client_5_generators(self):
+        with assert_raises(ClientError) as e:
+            client.stream_remove("/newton/prep", 123, 120)
+
+    def test_client_6_generators(self):
         # A lot of the client functionality is already tested by test_cmdline,
         # but this gets a bit more coverage that cmdline misses.
         client = nilmdb.Client(url = "http://localhost:12380/")
@@ -259,30 +281,46 @@ class TestClient(object):
             in_("404 Not Found", str(e.exception))
             in_("No such stream", str(e.exception))
 
-    def test_client_6_chunked(self):
+    def test_client_7_headers(self):
         # Make sure that /stream/intervals and /stream/extract
-        # properly return streaming, chunked response.  Pokes around
-        # in client.http internals a bit to look at the response
-        # headers.
+        # properly return streaming, chunked, text/plain response.
+        # Pokes around in client.http internals a bit to look at the
+        # response headers.
 
         client = nilmdb.Client(url = "http://localhost:12380/")
+        http = client.http
 
         # Use a warning rather than returning a test failure, so that we can
         # still disable chunked responses for debugging.
-        x = client.http.get("stream/intervals", { "path": "/newton/prep" },
+
+        # Intervals
+        x = http.get("stream/intervals", { "path": "/newton/prep" },
                             retjson=False)
         lines_(x, 1)
-        if "transfer-encoding: chunked" not in client.http._headers.lower():
+        if "Transfer-Encoding: chunked" not in http._headers:
             warnings.warn("Non-chunked HTTP response for /stream/intervals")
+        if "Content-Type: text/plain;charset=utf-8" not in http._headers:
+            raise AssertionError("/stream/intervals is not text/plain:\n" +
+                                 http._headers)
 
-        x = client.http.get("stream/extract",
+        # Extract
+        x = http.get("stream/extract",
                             { "path": "/newton/prep",
                               "start": "123",
                               "end": "123" }, retjson=False)
-        if "transfer-encoding: chunked" not in client.http._headers.lower():
+        if "Transfer-Encoding: chunked" not in http._headers:
             warnings.warn("Non-chunked HTTP response for /stream/extract")
+        if "Content-Type: text/plain;charset=utf-8" not in http._headers:
+            raise AssertionError("/stream/extract is not text/plain:\n" +
+                                 http._headers)
 
-    def test_client_7_unicode(self):
+        # Make sure Access-Control-Allow-Origin gets set
+        if "Access-Control-Allow-Origin: " not in http._headers:
+            raise AssertionError("No Access-Control-Allow-Origin (CORS) "
+                                 "header in /stream/extract response:\n" +
+                                 http._headers)
+
+    def test_client_8_unicode(self):
         # Basic Unicode tests
         client = nilmdb.Client(url = "http://localhost:12380/")
 

tests/test_cmdline.py

@@ -3,12 +3,14 @@
 import nilmdb
 from nilmdb.utils.printf import *
 import nilmdb.cmdline
+from nilmdb.utils import datetime_tz
 
+import unittest
 from nose.tools import *
 from nose.tools import assert_raises
 import itertools
-import datetime_tz
 import os
+import re
 import shutil
 import sys
 import threading
@@ -18,14 +20,16 @@ import Queue
 import StringIO
 import shlex
 
-from test_helpers import *
+from testutil.helpers import *
 
 testdb = "tests/cmdline-testdb"
 
-def server_start(max_results = None):
+def server_start(max_results = None, bulkdata_args = {}):
     global test_server, test_db
     # Start web app on a custom port
-    test_db = nilmdb.NilmDB(testdb, sync = False, max_results = max_results)
+    test_db = nilmdb.NilmDB(testdb, sync = False,
+                            max_results = max_results,
+                            bulkdata_args = bulkdata_args)
     test_server = nilmdb.Server(test_db, host = "127.0.0.1",
                                 port = 12380, stoppable = False,
                                 fast_shutdown = True,
@@ -94,14 +98,24 @@ class TestCmdline(object):
             self.dump()
             eq_(self.exitcode, 0)
 
-    def fail(self, arg_string, infile = None, exitcode = None):
+    def fail(self, arg_string, infile = None,
+             exitcode = None, require_error = True):
         self.run(arg_string, infile)
         if exitcode is not None and self.exitcode != exitcode:
+            # Wrong exit code
             self.dump()
             eq_(self.exitcode, exitcode)
         if self.exitcode == 0:
+            # Success, when we wanted failure
             self.dump()
             ne_(self.exitcode, 0)
+        # Make sure the output contains the word "error" at the
+        # beginning of a line, but only if an exitcode wasn't
+        # specified.
+        if require_error and not re.search("^error",
+                                           self.captured, re.MULTILINE):
+            raise AssertionError("command failed, but output doesn't "
+                                 "contain the string 'error'")
 
     def contain(self, checkstring):
         in_(checkstring, self.captured)
@@ -114,8 +128,8 @@ class TestCmdline(object):
         with open(file) as f:
             contents = f.read()
             if contents != self.captured:
-                #print contents[1:1000] + "\n"
-                #print self.captured[1:1000] + "\n"
+                print contents[1:1000] + "\n"
+                print self.captured[1:1000] + "\n"
                 raise AssertionError("captured data doesn't match " + file)
 
     def matchfilecount(self, file):
@@ -131,7 +145,7 @@ class TestCmdline(object):
     def dump(self):
         printf("-----dump start-----\n%s-----dump end-----\n", self.captured)
 
-    def test_cmdline_01_basic(self):
+    def test_01_basic(self):
 
         # help
         self.ok("--help")
@@ -177,14 +191,14 @@ class TestCmdline(object):
             self.fail("extract --start 2000-01-01 --start 2001-01-02")
             self.contain("duplicated argument")
 
-    def test_cmdline_02_info(self):
+    def test_02_info(self):
         self.ok("info")
         self.contain("Server URL: http://localhost:12380/")
         self.contain("Server version: " + test_server.version)
         self.contain("Server database path")
         self.contain("Server database size")
 
-    def test_cmdline_03_createlist(self):
+    def test_03_createlist(self):
         # Basic stream tests, like those in test_client.
 
         # No streams
@@ -201,6 +215,10 @@ class TestCmdline(object):
         # Bad layout type
         self.fail("create /newton/prep NoSuchLayout")
         self.contain("no such layout")
+        self.fail("create /newton/prep float32_0")
+        self.contain("no such layout")
+        self.fail("create /newton/prep float33_1")
+        self.contain("no such layout")
 
         # Create a few streams
         self.ok("create /newton/zzz/rawnotch RawNotchedData")
@@ -224,10 +242,17 @@ class TestCmdline(object):
                    "/newton/raw RawData\n"
                    "/newton/zzz/rawnotch RawNotchedData\n")
 
-        # Match just one type or one path
+        # Match just one type or one path.  Also check
+        # that --path is optional
         self.ok("list --path /newton/raw")
         self.match("/newton/raw RawData\n")
 
+        self.ok("list /newton/raw")
+        self.match("/newton/raw RawData\n")
+
+        self.fail("list -p /newton/raw /newton/raw")
+        self.contain("too many paths")
+
         self.ok("list --layout RawData")
         self.match("/newton/raw RawData\n")
 
@@ -239,10 +264,17 @@ class TestCmdline(object):
         self.ok("list --path *zzz* --layout Raw*")
         self.match("/newton/zzz/rawnotch RawNotchedData\n")
 
+        self.ok("list *zzz* --layout Raw*")
+        self.match("/newton/zzz/rawnotch RawNotchedData\n")
+
         self.ok("list --path *zzz* --layout Prep*")
         self.match("")
 
-    def test_cmdline_04_metadata(self):
+        # reversed range
+        self.fail("list /newton/prep --start 2020-01-01 --end 2000-01-01")
+        self.contain("start is after end")
+
+    def test_04_metadata(self):
         # Set / get metadata
         self.fail("metadata")
         self.fail("metadata --get")
@@ -299,7 +331,7 @@ class TestCmdline(object):
         self.fail("metadata /newton/nosuchpath")
         self.contain("No stream at path /newton/nosuchpath")
 
-    def test_cmdline_05_parsetime(self):
+    def test_05_parsetime(self):
         os.environ['TZ'] = "America/New_York"
         cmd = nilmdb.cmdline.Cmdline(None)
         test = datetime_tz.datetime_tz.now()
@@ -308,23 +340,24 @@ class TestCmdline(object):
         eq_(cmd.parse_time("hi there 20120405 1400-0400 testing! 123"), test)
         eq_(cmd.parse_time("20120405 1800 UTC"), test)
         eq_(cmd.parse_time("20120405 1400-0400 UTC"), test)
-        for badtime in [ "20120405 1400-9999", "hello", "-", "", "14:00" ]:
+        for badtime in [ "20120405 1400-9999", "hello", "-", "", "4:00" ]:
             with assert_raises(ValueError):
                 x = cmd.parse_time(badtime)
+        x = cmd.parse_time("now")
         eq_(cmd.parse_time("snapshot-20120405-140000.raw.gz"), test)
         eq_(cmd.parse_time("prep-20120405T1400"), test)
 
-    def test_cmdline_06_insert(self):
+    def test_06_insert(self):
         self.ok("insert --help")
 
         self.fail("insert /foo/bar baz qwer")
-        self.contain("Error getting stream info")
+        self.contain("error getting stream info")
 
         self.fail("insert /newton/prep baz qwer")
-        self.match("Error opening input file baz\n")
+        self.match("error opening input file baz\n")
 
         self.fail("insert /newton/prep")
-        self.contain("Error extracting time")
+        self.contain("error extracting time")
 
         self.fail("insert --start 19801205 /newton/prep 1 2 3 4")
         self.contain("--start can only be used with one input file")
@@ -337,6 +370,14 @@ class TestCmdline(object):
         with open("tests/data/prep-20120323T1004-timestamped") as input:
             self.ok("insert --none /newton/prep", input)
 
+        # insert pre-timestamped data, with bad times (non-monotonic)
+        os.environ['TZ'] = "UTC"
+        with open("tests/data/prep-20120323T1004-badtimes") as input:
+            self.fail("insert --none /newton/prep", input)
+            self.contain("error parsing input data")
+            self.contain("line 7:")
+            self.contain("timestamp is not monotonically increasing")
+
         # insert data with normal timestamper from filename
         os.environ['TZ'] = "UTC"
         self.ok("insert --rate 120 /newton/prep "
@@ -365,7 +406,7 @@ class TestCmdline(object):
         os.environ['TZ'] = "UTC"
         self.fail("insert --rate 120 /newton/raw "
                   "tests/data/prep-20120323T1004")
-        self.contain("Error parsing input data")
+        self.contain("error parsing input data")
 
         # empty data does nothing
         self.ok("insert --rate 120 --start '03/23/2012 06:05:00' /newton/prep "
@@ -374,7 +415,7 @@ class TestCmdline(object):
         # bad start time
         self.fail("insert --rate 120 --start 'whatever' /newton/prep /dev/null")
 
-    def test_cmdline_07_detail(self):
+    def test_07_detail(self):
         # Just count the number of lines, it's probably fine
         self.ok("list --detail")
         lines_(self.captured, 8)
@@ -408,23 +449,41 @@ class TestCmdline(object):
         self.ok("list --detail")
         lines_(self.captured, 8)
 
-    def test_cmdline_08_extract(self):
+        # Verify the "raw timestamp" output
+        self.ok("list --detail --path *prep --timestamp-raw "
+                "--start='23 Mar 2012 10:05:15.50'")
+        lines_(self.captured, 2)
+        self.contain("[ 1332497115.5 -> 1332497159.991668 ]")
+
+        self.ok("list --detail --path *prep -T "
+                "--start='23 Mar 2012 10:05:15.612'")
+        lines_(self.captured, 2)
+        self.contain("[ 1332497115.612 -> 1332497159.991668 ]")
+
+    def test_08_extract(self):
         # nonexistent stream
         self.fail("extract /no/such/foo --start 2000-01-01 --end 2020-01-01")
-        self.contain("Error getting stream info")
+        self.contain("error getting stream info")
 
-        # empty ranges return an error
+        # reversed range
+        self.fail("extract -a /newton/prep --start 2020-01-01 --end 2000-01-01")
+        self.contain("start is after end")
+
+        # empty ranges return error 2
         self.fail("extract -a /newton/prep " +
                   "--start '23 Mar 2012 10:00:30' " +
-                  "--end '23 Mar 2012 10:00:30'", exitcode = 2)
+                  "--end '23 Mar 2012 10:00:30'",
+                  exitcode = 2, require_error = False)
         self.contain("no data")
         self.fail("extract -a /newton/prep " +
                   "--start '23 Mar 2012 10:00:30.000001' " +
-                  "--end '23 Mar 2012 10:00:30.000001'", exitcode = 2)
+                  "--end '23 Mar 2012 10:00:30.000001'",
+                  exitcode = 2, require_error = False)
         self.contain("no data")
         self.fail("extract -a /newton/prep " +
                   "--start '23 Mar 2022 10:00:30' " +
-                  "--end '23 Mar 2022 10:00:30'", exitcode = 2)
+                  "--end '23 Mar 2022 10:00:30'",
+                  exitcode = 2, require_error = False)
         self.contain("no data")
 
         # but are ok if we're just counting results
@@ -456,6 +515,8 @@ class TestCmdline(object):
         test(4, "10:00:30.008333", "10:00:30.025")
         test(5, "10:00:30", "10:00:31", extra="--annotate --bare")
         test(6, "10:00:30", "10:00:31", extra="-b")
+        test(7, "10:00:30", "10:00:30.999", extra="-a -T")
+        test(7, "10:00:30", "10:00:30.999", extra="-a --timestamp-raw")
 
         # all data put in by tests
         self.ok("extract -a /newton/prep --start 2000-01-01 --end 2020-01-01")
@@ -463,7 +524,7 @@ class TestCmdline(object):
         self.ok("extract -c /newton/prep --start 2000-01-01 --end 2020-01-01")
         self.match("43200\n")
 
-    def test_cmdline_09_truncated(self):
+    def test_09_truncated(self):
         # Test truncated responses by overriding the nilmdb max_results
         server_stop()
         server_start(max_results = 2)
@@ -472,7 +533,102 @@ class TestCmdline(object):
         server_stop()
         server_start()
 
-    def test_cmdline_10_destroy(self):
+    def test_10_remove(self):
+        # Removing data
+
+        # Try nonexistent stream
+        self.fail("remove /no/such/foo --start 2000-01-01 --end 2020-01-01")
+        self.contain("No stream at path")
+
+        self.fail("remove /newton/prep --start 2020-01-01 --end 2000-01-01")
+        self.contain("start is after end")
+
+        # empty ranges return success, backwards ranges return error
+        self.ok("remove /newton/prep " +
+                "--start '23 Mar 2012 10:00:30' " +
+                "--end '23 Mar 2012 10:00:30'")
+        self.match("")
+        self.ok("remove /newton/prep " +
+                "--start '23 Mar 2012 10:00:30.000001' " +
+                "--end '23 Mar 2012 10:00:30.000001'")
+        self.match("")
+        self.ok("remove /newton/prep " +
+                "--start '23 Mar 2022 10:00:30' " +
+                "--end '23 Mar 2022 10:00:30'")
+        self.match("")
+
+        # Verbose
+        self.ok("remove -c /newton/prep " +
+                "--start '23 Mar 2012 10:00:30' " +
+                "--end '23 Mar 2012 10:00:30'")
+        self.match("0\n")
+        self.ok("remove --count /newton/prep " +
+                "--start '23 Mar 2012 10:00:30' " +
+                "--end '23 Mar 2012 10:00:30'")
+        self.match("0\n")
+
+        # Make sure we have the data we expect
+        self.ok("list --detail /newton/prep")
+        self.match("/newton/prep PrepData\n" +
+                   "  [ Fri, 23 Mar 2012 10:00:00.000000 +0000"
+                   " -> Fri, 23 Mar 2012 10:01:59.991668 +0000 ]\n"
+                   "  [ Fri, 23 Mar 2012 10:02:00.000000 +0000"
+                   " -> Fri, 23 Mar 2012 10:03:59.991668 +0000 ]\n"
+                   "  [ Fri, 23 Mar 2012 10:04:00.000000 +0000"
+                   " -> Fri, 23 Mar 2012 10:05:59.991668 +0000 ]\n")
+
+        # Remove various chunks of prep data and make sure
+        # they're gone.
+        self.ok("remove -c /newton/prep " +
+                "--start '23 Mar 2012 10:00:30' " +
+                "--end '23 Mar 2012 10:00:40'")
+        self.match("1200\n")
+
+        self.ok("remove -c /newton/prep " +
+                "--start '23 Mar 2012 10:00:10' " +
+                "--end '23 Mar 2012 10:00:20'")
+        self.match("1200\n")
+
+        self.ok("remove -c /newton/prep " +
+                "--start '23 Mar 2012 10:00:05' " +
+                "--end '23 Mar 2012 10:00:25'")
+        self.match("1200\n")
+
+        self.ok("remove -c /newton/prep " +
+                "--start '23 Mar 2012 10:03:50' " +
+                "--end '23 Mar 2012 10:06:50'")
+        self.match("15600\n")
+
+        self.ok("extract -c /newton/prep --start 2000-01-01 --end 2020-01-01")
+        self.match("24000\n")
+
+        # See the missing chunks in list output
+        self.ok("list --detail /newton/prep")
+        self.match("/newton/prep PrepData\n" +
+                   "  [ Fri, 23 Mar 2012 10:00:00.000000 +0000"
+                   " -> Fri, 23 Mar 2012 10:00:05.000000 +0000 ]\n"
+                   "  [ Fri, 23 Mar 2012 10:00:25.000000 +0000"
+                   " -> Fri, 23 Mar 2012 10:00:30.000000 +0000 ]\n"
+                   "  [ Fri, 23 Mar 2012 10:00:40.000000 +0000"
+                   " -> Fri, 23 Mar 2012 10:01:59.991668 +0000 ]\n"
+                   "  [ Fri, 23 Mar 2012 10:02:00.000000 +0000"
+                   " -> Fri, 23 Mar 2012 10:03:50.000000 +0000 ]\n")
+
+        # Remove all data, verify it's missing
+        self.ok("remove /newton/prep --start 2000-01-01 --end 2020-01-01")
+        self.match("")  # no count requested this time
+        self.ok("list --detail /newton/prep")
+        self.match("/newton/prep PrepData\n" +
+                   "  (no intervals)\n")
+
+        # Reinsert some data, to verify that no overlaps with deleted
+        # data are reported
+        os.environ['TZ'] = "UTC"
+        self.ok("insert --rate 120 /newton/prep "
+                "tests/data/prep-20120323T1000 "
+                "tests/data/prep-20120323T1002")
+
+    def test_11_destroy(self):
         # Delete records
         self.ok("destroy --help")
 
@@ -493,7 +649,7 @@ class TestCmdline(object):
 
         # Notice how they're not empty
         self.ok("list --detail")
-        lines_(self.captured, 8)
+        lines_(self.captured, 7)
 
         # Delete some
         self.ok("destroy /newton/prep")
@@ -523,7 +679,7 @@ class TestCmdline(object):
             self.ok("list --detail --path " + path)
             self.contain("(no intervals)")
 
-    def test_cmdline_11_unicode(self):
+    def test_12_unicode(self):
         # Unicode paths.
         self.ok("destroy /newton/asdf/qwer")
         self.ok("destroy /newton/prep")
@@ -540,3 +696,149 @@ class TestCmdline(object):
         self.ok(u"metadata /düsseldorf/raw --update 'α=β ε τ α'")
         self.ok(u"metadata /düsseldorf/raw")
         self.match(u"α=β ε τ α\nγ=δ\n")
+
+        self.ok(u"destroy /düsseldorf/raw")
+
+    def test_13_files(self):
+        # Test BulkData's ability to split into multiple files,
+        # by forcing the file size to be really small.
+        server_stop()
+        server_start(bulkdata_args = { "file_size" : 920, # 23 rows per file
+                                       "files_per_dir" : 3 })
+
+        # Fill data
+        self.ok("create /newton/prep float32_8")
+        os.environ['TZ'] = "UTC"
+        with open("tests/data/prep-20120323T1004-timestamped") as input:
+            self.ok("insert --none /newton/prep", input)
+
+        # Extract it
+        self.ok("extract /newton/prep --start '2000-01-01' " +
+                "--end '2012-03-23 10:04:01'")
+        lines_(self.captured, 120)
+        self.ok("extract /newton/prep --start '2000-01-01' " +
+                "--end '2022-03-23 10:04:01'")
+        lines_(self.captured, 14400)
+
+        # Make sure there were lots of files generated in the database
+        # dir
+        nfiles = 0
+        for (dirpath, dirnames, filenames) in os.walk(testdb):
+            nfiles += len(filenames)
+        assert(nfiles > 500)
+
+        # Make sure we can restart the server with a different file
+        # size and have it still work
+        server_stop()
+        server_start()
+        self.ok("extract /newton/prep --start '2000-01-01' " +
+                "--end '2022-03-23 10:04:01'")
+        lines_(self.captured, 14400)
+
+        # Now recreate the data one more time and make sure there are
+        # fewer files.
+        self.ok("destroy /newton/prep")
+        self.fail("destroy /newton/prep") # already destroyed
+        self.ok("create /newton/prep float32_8")
+        os.environ['TZ'] = "UTC"
+        with open("tests/data/prep-20120323T1004-timestamped") as input:
+            self.ok("insert --none /newton/prep", input)
+        nfiles = 0
+        for (dirpath, dirnames, filenames) in os.walk(testdb):
+            nfiles += len(filenames)
+        lt_(nfiles, 50)
+        self.ok("destroy /newton/prep") # destroy again
+
+    def test_14_remove_files(self):
+        # Test BulkData's ability to remove when data is split into
+        # multiple files.  Should be a fairly comprehensive test of
+        # remove functionality.
+        server_stop()
+        server_start(bulkdata_args = { "file_size" : 920, # 23 rows per file
+                                       "files_per_dir" : 3 })
+
+        # Insert data.  Just for fun, insert out of order
+        self.ok("create /newton/prep PrepData")
+        os.environ['TZ'] = "UTC"
+        self.ok("insert --rate 120 /newton/prep "
+                "tests/data/prep-20120323T1002 "
+                "tests/data/prep-20120323T1000")
+
+        # Should take up about 2.8 MB here (including directory entries)
+        du_before = nilmdb.utils.diskusage.du_bytes(testdb)
+
+        # Make sure we have the data we expect
+        self.ok("list --detail")
+        self.match("/newton/prep PrepData\n" +
+                   "  [ Fri, 23 Mar 2012 10:00:00.000000 +0000"
+                   " -> Fri, 23 Mar 2012 10:01:59.991668 +0000 ]\n"
+                   "  [ Fri, 23 Mar 2012 10:02:00.000000 +0000"
+                   " -> Fri, 23 Mar 2012 10:03:59.991668 +0000 ]\n")
+
+        # Remove various chunks of prep data and make sure
+        # they're gone.
+        self.ok("extract -c /newton/prep --start 2000-01-01 --end 2020-01-01")
+        self.match("28800\n")
+
+        self.ok("remove -c /newton/prep " +
+                "--start '23 Mar 2012 10:00:30' " +
+                "--end '23 Mar 2012 10:03:30'")
+        self.match("21600\n")
+
+        self.ok("remove -c /newton/prep " +
+                "--start '23 Mar 2012 10:00:10' " +
+                "--end '23 Mar 2012 10:00:20'")
+        self.match("1200\n")
+
+        self.ok("remove -c /newton/prep " +
+                "--start '23 Mar 2012 10:00:05' " +
+                "--end '23 Mar 2012 10:00:25'")
+        self.match("1200\n")
+
+        self.ok("remove -c /newton/prep " +
+                "--start '23 Mar 2012 10:03:50' " +
+                "--end '23 Mar 2012 10:06:50'")
+        self.match("1200\n")
+
+        self.ok("extract -c /newton/prep --start 2000-01-01 --end 2020-01-01")
+        self.match("3600\n")
+
+        # See the missing chunks in list output
+        self.ok("list --detail")
+        self.match("/newton/prep PrepData\n" +
+                   "  [ Fri, 23 Mar 2012 10:00:00.000000 +0000"
+                   " -> Fri, 23 Mar 2012 10:00:05.000000 +0000 ]\n"
+                   "  [ Fri, 23 Mar 2012 10:00:25.000000 +0000"
+                   " -> Fri, 23 Mar 2012 10:00:30.000000 +0000 ]\n"
+                   "  [ Fri, 23 Mar 2012 10:03:30.000000 +0000"
+                   " -> Fri, 23 Mar 2012 10:03:50.000000 +0000 ]\n")
+
+        # We have 1/8 of the data that we had before, so the file size
+        # should have dropped below 1/4 of what it used to be
+        du_after = nilmdb.utils.diskusage.du_bytes(testdb)
+        lt_(du_after, (du_before / 4))
+
+        # Remove anything that came from the 10:02 data file
+        self.ok("remove /newton/prep " +
+                "--start '23 Mar 2012 10:02:00' --end '2020-01-01'")
+
+        # Re-insert 19 lines from that file, then remove them again.
+        # With the specific file_size above, this will cause the last
+        # file in the bulk data storage to be exactly file_size large,
+        # so removing the data should also remove that last file.
+        self.ok("insert --rate 120 /newton/prep " +
+                "tests/data/prep-20120323T1002-first19lines")
+        self.ok("remove /newton/prep " +
+                "--start '23 Mar 2012 10:02:00' --end '2020-01-01'")
+
+        # Shut down and restart server, to force nrows to get refreshed.
+        server_stop()
+        server_start()
+
+        # Re-add the full 10:02 data file.  This tests adding new data once
+        # we removed data near the end.
+        self.ok("insert --rate 120 /newton/prep tests/data/prep-20120323T1002")
+
+        # See if we can extract it all
+        self.ok("extract /newton/prep --start 2000-01-01 --end 2020-01-01")
+        lines_(self.captured, 15600)

tests/test_interval.py

@@ -2,21 +2,22 @@
 
 import nilmdb
 from nilmdb.utils.printf import *
-import datetime_tz
+from nilmdb.utils import datetime_tz
 
 from nose.tools import *
 from nose.tools import assert_raises
 import itertools
 
-from nilmdb.interval import Interval, DBInterval, IntervalSet, IntervalError
+from nilmdb.server.interval import (Interval, DBInterval,
+                                    IntervalSet, IntervalError)
 
-from test_helpers import *
+from testutil.helpers import *
 import unittest
 
 # set to False to skip live renders
 do_live_renders = False
 def render(iset, description = "", live = True):
-    import renderdot
+    import testutil.renderdot as renderdot
     r = renderdot.RBTreeRenderer(iset.tree)
     return r.render(description, live and do_live_renders)
 
@@ -345,14 +346,15 @@ class TestIntervalSpeed:
     def test_interval_speed(self):
         import yappi
         import time
-        import aplotter
+        import testutil.aplotter as aplotter
         import random
         import math
 
         print
         yappi.start()
         speeds = {}
-        for j in [ 2**x for x in range(5,20) ]:
+        limit = 10 # was 20
+        for j in [ 2**x for x in range(5,limit) ]:
             start = time.time()
             iset = IntervalSet()
             for i in random.sample(xrange(j),j):

tests/test_iteratorizer.py

@@ -7,12 +7,13 @@ from nose.tools import assert_raises
 import threading
 import time
 
-from test_helpers import *
+from testutil.helpers import *
 
 def func_with_callback(a, b, callback):
     callback(a)
     callback(b)
     callback(a+b)
+    return "return value"
 
 class TestIteratorizer(object):
     def test(self):
@@ -25,19 +26,18 @@ class TestIteratorizer(object):
         eq_(self.result, "123")
 
         # Now make it an iterator
-        it = nilmdb.utils.Iteratorizer(
-            lambda x:
-            func_with_callback(1, 2, x))
         result = ""
+        f = lambda x: func_with_callback(1, 2, x)
+        with nilmdb.utils.Iteratorizer(f) as it:
             for i in it:
                 result += str(i)
         eq_(result, "123")
+        eq_(it.retval, "return value")
 
         # Make sure things work when an exception occurs
-        it = nilmdb.utils.Iteratorizer(
-            lambda x:
-            func_with_callback(1, "a", x))
         result = ""
+        with nilmdb.utils.Iteratorizer(
+            lambda x: func_with_callback(1, "a", x)) as it:
             with assert_raises(TypeError) as e:
                 for i in it:
                     result += str(i)
@@ -48,8 +48,14 @@ class TestIteratorizer(object):
         # itself.  This doesn't have a particular result in the test,
         # but gains coverage.
         def foo():
-            it = nilmdb.utils.Iteratorizer(
-                lambda x:
-                func_with_callback(1, 2, x))
+            with nilmdb.utils.Iteratorizer(f) as it:
                 it.next()
         foo()
+        eq_(it.retval, None)
+
+        # Do the same thing when the curl hack is applied
+        def foo():
+            with nilmdb.utils.Iteratorizer(f, curl_hack = True) as it:
+                it.next()
+        foo()
+        eq_(it.retval, None)

tests/test_layout.py

@@ -20,19 +20,19 @@ import cStringIO
 import random
 import unittest
 
-from test_helpers import *
+from testutil.helpers import *
 
-from nilmdb.layout import *
+from nilmdb.server.layout import *
 
 class TestLayouts(object):
     # Some nilmdb.layout tests.  Not complete, just fills in missing
     # coverage.
     def test_layouts(self):
-        x = nilmdb.layout.get_named("PrepData")
-        y = nilmdb.layout.get_named("float32_8")
+        x = nilmdb.server.layout.get_named("PrepData")
+        y = nilmdb.server.layout.get_named("float32_8")
         eq_(x.count, y.count)
         eq_(x.datatype, y.datatype)
-        y = nilmdb.layout.get_named("float32_7")
+        y = nilmdb.server.layout.get_named("float32_7")
         ne_(x.count, y.count)
         eq_(x.datatype, y.datatype)
 
@@ -89,11 +89,23 @@ class TestLayouts(object):
         # non-monotonic
         parser = Parser(name_raw)
         data = ( "1234567890.100000 1 2 3 4 5 6\n" +
-                 "1234567890.000000 1 2 3 4 5 6\n" )
+                 "1234567890.099999 1 2 3 4 5 6\n" )
         with assert_raises(ParserError) as e:
             parser.parse(data)
         in_("not monotonically increasing", str(e.exception))
 
+        parser = Parser(name_raw)
+        data = ( "1234567890.100000 1 2 3 4 5 6\n" +
+                 "1234567890.100000 1 2 3 4 5 6\n" )
+        with assert_raises(ParserError) as e:
+            parser.parse(data)
+        in_("not monotonically increasing", str(e.exception))
+
+        parser = Parser(name_raw)
+        data = ( "1234567890.100000 1 2 3 4 5 6\n" +
+                 "1234567890.100001 1 2 3 4 5 6\n" )
+        parser.parse(data)
+
         # RawData with values out of bounds
         parser = Parser(name_raw)
         data = ( "1234567890.000000 1 2 3 4 500000 6\n" +

tests/test_lrucache.py

@@ -6,8 +6,9 @@ from nose.tools import *
 from nose.tools import assert_raises
 import threading
 import time
+import inspect
 
-from test_helpers import *
+from testutil.helpers import *
 
 @nilmdb.utils.lru_cache(size = 3)
 def foo1(n):
@@ -24,30 +25,59 @@ foo3d.destructed = []
 def foo3(n):
     return n
 
+class Foo:
+    def __init__(self):
+        self.calls = 0
+    @nilmdb.utils.lru_cache(size = 3, keys = slice(1, 2))
+    def foo(self, n, **kwargs):
+        self.calls += 1
+
 class TestLRUCache(object):
     def test(self):
+
         [ foo1(n) for n in [ 1, 2, 3, 1, 2, 3, 1, 2, 3 ] ]
-        eq_((foo1.cache_hits, foo1.cache_misses), (6, 3))
+        eq_(foo1.cache_info(), (6, 3))
         [ foo1(n) for n in [ 1, 2, 3, 1, 2, 3, 1, 2, 3 ] ]
-        eq_((foo1.cache_hits, foo1.cache_misses), (15, 3))
+        eq_(foo1.cache_info(), (15, 3))
         [ foo1(n) for n in [ 4, 2, 1, 1, 4 ] ]
-        eq_((foo1.cache_hits, foo1.cache_misses), (18, 5))
+        eq_(foo1.cache_info(), (18, 5))
 
         [ foo2(n) for n in [ 1, 2, 3, 1, 2, 3, 1, 2, 3 ] ]
-        eq_((foo2.cache_hits, foo2.cache_misses), (6, 3))
+        eq_(foo2.cache_info(), (6, 3))
         [ foo2(n) for n in [ 1, 2, 3, 1, 2, 3, 1, 2, 3 ] ]
-        eq_((foo2.cache_hits, foo2.cache_misses), (15, 3))
+        eq_(foo2.cache_info(), (15, 3))
         [ foo2(n) for n in [ 4, 2, 1, 1, 4 ] ]
-        eq_((foo2.cache_hits, foo2.cache_misses), (19, 4))
+        eq_(foo2.cache_info(), (19, 4))
 
         [ foo3(n) for n in [ 1, 2, 3, 1, 2, 3, 1, 2, 3 ] ]
-        eq_((foo3.cache_hits, foo3.cache_misses), (6, 3))
+        eq_(foo3.cache_info(), (6, 3))
         [ foo3(n) for n in [ 1, 2, 3, 1, 2, 3, 1, 2, 3 ] ]
-        eq_((foo3.cache_hits, foo3.cache_misses), (15, 3))
+        eq_(foo3.cache_info(), (15, 3))
         [ foo3(n) for n in [ 4, 2, 1, 1, 4 ] ]
-        eq_((foo3.cache_hits, foo3.cache_misses), (18, 5))
+        eq_(foo3.cache_info(), (18, 5))
         eq_(foo3d.destructed, [1, 3])
+        with assert_raises(KeyError):
+            foo3.cache_remove(1,2,3)
         foo3.cache_remove(1)
         eq_(foo3d.destructed, [1, 3, 1])
         foo3.cache_remove_all()
         eq_(foo3d.destructed, [1, 3, 1, 2, 4 ])
+
+        foo = Foo()
+        foo.foo(5)
+        foo.foo(6)
+        foo.foo(7)
+        foo.foo(5)
+        eq_(foo.calls, 3)
+
+        # Can't handle keyword arguments right now
+        with assert_raises(NotImplementedError):
+            foo.foo(3, asdf = 7)
+
+        # Verify that argspecs were maintained
+        eq_(inspect.getargspec(foo1),
+            inspect.ArgSpec(args=['n'],
+                            varargs=None, keywords=None, defaults=None))
+        eq_(inspect.getargspec(foo.foo),
+            inspect.ArgSpec(args=['self', 'n'],
+                            varargs=None, keywords="kwargs", defaults=None))

tests/test_mustclose.py

@@ -5,15 +5,29 @@ import nose
 from nose.tools import *
 from nose.tools import assert_raises
 
-from test_helpers import *
+from testutil.helpers import *
 
 import sys
 import cStringIO
+import gc
+
+import inspect
 
 err = cStringIO.StringIO()
 
 @nilmdb.utils.must_close(errorfile = err)
 class Foo:
+    def __init__(self, arg):
+        fprintf(err, "Init %s\n", arg)
+
+    def __del__(self):
+        fprintf(err, "Deleting\n")
+
+    def close(self):
+        fprintf(err, "Closing\n")
+
+@nilmdb.utils.must_close(errorfile = err, wrap_verify = True)
+class Bar:
     def __init__(self):
         fprintf(err, "Init\n")
 
@@ -23,8 +37,11 @@ class Foo:
     def close(self):
         fprintf(err, "Closing\n")
 
+    def blah(self, arg):
+        fprintf(err, "Blah %s\n", arg)
+
 @nilmdb.utils.must_close(errorfile = err)
-class Bar:
+class Baz:
     pass
 
 class TestMustClose(object):
@@ -34,26 +51,60 @@ class TestMustClose(object):
         # garbage collect the object (and call its __del__ function)
         # right after a "del x".
 
-        x = Foo()
+        # Trigger error
+        err.truncate()
+        x = Foo("hi")
+        # Verify that the arg spec was maintained
+        eq_(inspect.getargspec(x.__init__),
+            inspect.ArgSpec(args = ['self', 'arg'],
+                            varargs = None, keywords = None, defaults = None))
         del x
+        gc.collect()
         eq_(err.getvalue(),
-            "Init\n"
+            "Init hi\n"
             "error: Foo.close() wasn't called!\n"
             "Deleting\n")
 
+        # No error
         err.truncate(0)
-
-        y = Foo()
+        y = Foo("bye")
         y.close()
         del y
+        gc.collect()
         eq_(err.getvalue(),
-            "Init\n"
+            "Init bye\n"
             "Closing\n"
             "Deleting\n")
 
+        # Verify function calls when wrap_verify is True
         err.truncate(0)
-
         z = Bar()
+        eq_(inspect.getargspec(z.blah),
+            inspect.ArgSpec(args = ['self', 'arg'],
+                            varargs = None, keywords = None, defaults = None))
+        z.blah("boo")
         z.close()
+        with assert_raises(AssertionError) as e:
+            z.blah("hello")
+        in_("called <function blah at 0x", str(e.exception))
+        in_("> after close", str(e.exception))
+        # Since the most recent assertion references 'z',
+        # we need to raise another assertion here so that
+        # 'z' will get properly deleted.
+        with assert_raises(AssertionError):
+            raise AssertionError()
         del z
+        gc.collect()
+        eq_(err.getvalue(),
+            "Init\n"
+            "Blah boo\n"
+            "Closing\n"
+            "Deleting\n")
+
+        # Class with missing methods
+        err.truncate(0)
+        w = Baz()
+        w.close()
+        del w
         eq_(err.getvalue(), "")
+

tests/test_nilmdb.py

@@ -22,7 +22,7 @@ testdb = "tests/testdb"
 #def cleanup():
 #    os.unlink(testdb)
 
-from test_helpers import *
+from testutil.helpers import *
 
 class Test00Nilmdb(object):  # named 00 so it runs first
     def test_NilmDB(self):
@@ -113,7 +113,8 @@ class TestBlockingServer(object):
             self.server.start(blocking = True, event = event)
         thread = threading.Thread(target = run_server)
         thread.start()
-        event.wait(timeout = 2)
+        if not event.wait(timeout = 10):
+            raise AssertionError("server didn't start in 10 seconds")
 
         # Send request to exit.
         req = urlopen("http://127.0.0.1:12380/exit/", timeout = 1)
@@ -150,8 +151,8 @@ class TestServer(object):
             eq_(e.exception.code, 404)
 
         # Check version
-        eq_(distutils.version.StrictVersion(getjson("/version")),
-            distutils.version.StrictVersion(self.server.version))
+        eq_(distutils.version.LooseVersion(getjson("/version")),
+            distutils.version.LooseVersion(nilmdb.__version__))
 
     def test_stream_list(self):
         # Known streams that got populated by an earlier test (test_nilmdb)

tests/test_printf.py

@@ -6,7 +6,7 @@ from nose.tools import assert_raises
 from cStringIO import StringIO
 import sys
 
-from test_helpers import *
+from testutil.helpers import *
 
 class TestPrintf(object):
     def test_printf(self):

tests/test_rbtree.py

@@ -6,15 +6,15 @@ from nilmdb.utils.printf import *
 from nose.tools import *
 from nose.tools import assert_raises
 
-from nilmdb.rbtree import RBTree, RBNode
+from nilmdb.server.rbtree import RBTree, RBNode
 
-from test_helpers import *
+from testutil.helpers import *
 import unittest
 
 # set to False to skip live renders
 do_live_renders = False
 def render(tree, description = "", live = True):
-    import renderdot
+    import testutil.renderdot as renderdot
     r = renderdot.RBTreeRenderer(tree)
     return r.render(description, live and do_live_renders)
 

tests/test_serializer.py

@@ -7,7 +7,7 @@ from nose.tools import assert_raises
 import threading
 import time
 
-from test_helpers import *
+from testutil.helpers import *
 
 #raise nose.exc.SkipTest("Skip these")
 

tests/test_timestamper.py

@@ -1,7 +1,6 @@
 import nilmdb
 from nilmdb.utils.printf import *
-
-import datetime_tz
+from nilmdb.utils import datetime_tz
 
 from nose.tools import *
 from nose.tools import assert_raises
@@ -9,7 +8,9 @@ import os
 import sys
 import cStringIO
 
-from test_helpers import *
+from testutil.helpers import *
+
+from nilmdb.utils import timestamper
 
 class TestTimestamper(object):
 
@@ -27,20 +28,20 @@ class TestTimestamper(object):
 
         # full
         input = cStringIO.StringIO(join(lines_in))
-        ts = nilmdb.timestamper.TimestamperRate(input, start, 8000)
+        ts = timestamper.TimestamperRate(input, start, 8000)
         foo = ts.readlines()
         eq_(foo, join(lines_out))
         in_("TimestamperRate(..., start=", str(ts))
 
         # first 30 or so bytes means the first 2 lines
         input = cStringIO.StringIO(join(lines_in))
-        ts = nilmdb.timestamper.TimestamperRate(input, start, 8000)
+        ts = timestamper.TimestamperRate(input, start, 8000)
         foo = ts.readlines(30)
         eq_(foo, join(lines_out[0:2]))
 
         # stop iteration early
         input = cStringIO.StringIO(join(lines_in))
-        ts = nilmdb.timestamper.TimestamperRate(input, start, 8000,
+        ts = timestamper.TimestamperRate(input, start, 8000,
                                                 1332561600.000200)
         foo = ""
         for line in ts:
@@ -49,21 +50,21 @@ class TestTimestamper(object):
 
         # stop iteration early (readlines)
         input = cStringIO.StringIO(join(lines_in))
-        ts = nilmdb.timestamper.TimestamperRate(input, start, 8000,
+        ts = timestamper.TimestamperRate(input, start, 8000,
                                                 1332561600.000200)
         foo = ts.readlines()
         eq_(foo, join(lines_out[0:2]))
 
         # stop iteration really early
         input = cStringIO.StringIO(join(lines_in))
-        ts = nilmdb.timestamper.TimestamperRate(input, start, 8000,
+        ts = timestamper.TimestamperRate(input, start, 8000,
                                                 1332561600.000000)
         foo = ts.readlines()
         eq_(foo, "")
 
         # use iterator
         input = cStringIO.StringIO(join(lines_in))
-        ts = nilmdb.timestamper.TimestamperRate(input, start, 8000)
+        ts = timestamper.TimestamperRate(input, start, 8000)
         foo = ""
         for line in ts:
             foo += line
@@ -71,21 +72,21 @@ class TestTimestamper(object):
 
         # check that TimestamperNow gives similar result
         input = cStringIO.StringIO(join(lines_in))
-        ts = nilmdb.timestamper.TimestamperNow(input)
+        ts = timestamper.TimestamperNow(input)
         foo = ts.readlines()
         ne_(foo, join(lines_out))
         eq_(len(foo), len(join(lines_out)))
         eq_(str(ts), "TimestamperNow(...)")
 
         # Test passing a file (should be empty)
-        ts = nilmdb.timestamper.TimestamperNow("/dev/null")
+        ts = timestamper.TimestamperNow("/dev/null")
         for line in ts:
             raise AssertionError
         ts.close()
 
         # Test the null timestamper
         input = cStringIO.StringIO(join(lines_out))  # note: lines_out
-        ts = nilmdb.timestamper.TimestamperNull(input)
+        ts = timestamper.TimestamperNull(input)
         foo = ts.readlines()
         eq_(foo, join(lines_out))
         eq_(str(ts), "TimestamperNull(...)")

tests/testutil/__init__.py

@@ -0,0 +1 @@
+# empty

tests/testutil/helpers.py

@@ -12,6 +12,10 @@ def eq_(a, b):
     if not a == b:
         raise AssertionError("%s != %s" % (myrepr(a), myrepr(b)))
 
+def lt_(a, b):
+    if not a < b:
+        raise AssertionError("%s is not less than %s" % (myrepr(a), myrepr(b)))
+
 def in_(a, b):
     if a not in b:
         raise AssertionError("%s not in %s" % (myrepr(a), myrepr(b)))
@@ -23,6 +27,8 @@ def ne_(a, b):
 def lines_(a, n):
     l = a.count('\n')
     if not l == n:
+        if len(a) > 5000:
+            a = a[0:5000] + " ... truncated"
         raise AssertionError("wanted %d lines, got %d in output: '%s'"
                              % (n, l, a))
 

time-bxintersect

@@ -1,54 +0,0 @@
-nosetests
-
-32: 386 μs (12.0625 μs each)
-64: 672.102 μs (10.5016 μs each)
-128: 1510.86 μs (11.8036 μs each)
-256: 2782.11 μs (10.8676 μs each)
-512: 5591.87 μs (10.9216 μs each)
-1024: 12812.1 μs (12.5119 μs each)
-2048: 21835.1 μs (10.6617 μs each)
-4096: 46059.1 μs (11.2449 μs each)
-8192: 114127 μs (13.9315 μs each)
-16384: 181217 μs (11.0606 μs each)
-32768: 419649 μs (12.8067 μs each)
-65536: 804320 μs (12.2729 μs each)
-131072: 1.73534e+06 μs (13.2396 μs each)
-262144: 3.74451e+06 μs (14.2842 μs each)
-524288: 8.8694e+06 μs (16.917 μs each)
-1048576: 1.69993e+07 μs (16.2118 μs each)
-2097152: 3.29387e+07 μs (15.7064 μs each)
-   |                                                                            
-   +3.29387e+07                                                             *   
-   |                                                                    ----    
-   |                                                               -----        
-   |                                                           ----             
-   |                                                      -----                 
-   |                                                 -----                      
-   |                                             ----                           
-   |                                        -----                               
-   |                                   -----                                    
-   |                               ----                                         
-   |                          -----                                             
-   |                      ----                                                  
-   |                 -----                                                      
-   |              ---                                                           
-   |           ---                                                              
-   |        ---                                                                 
-   | -------                                                                    
----+386---------------------------------------------------------------------+---
-   +32                                                          +2.09715e+06    
-
-name                                 #n            tsub      ttot      tavg
-..vl/lees/bucket/nilm/nilmdb/nilmdb/interval.py.__iadd__:184  4194272          10.025323     30.262723     0.000007    
-..evl/lees/bucket/nilm/nilmdb/nilmdb/interval.py.__init__:27  4194272          24.715377     24.715377     0.000006    
-../lees/bucket/nilm/nilmdb/nilmdb/interval.py.intersects:239  4194272          6.705053      12.577620     0.000003    
-..im/devl/lees/bucket/nilm/nilmdb/tests/aplotter.py.plot:404  1                0.000048      0.001412      0.001412    
-../lees/bucket/nilm/nilmdb/tests/aplotter.py.plot_double:311  1                0.000106      0.001346      0.001346    
-..vl/lees/bucket/nilm/nilmdb/tests/aplotter.py.plot_data:201  1                0.000098      0.000672      0.000672    
-..vl/lees/bucket/nilm/nilmdb/tests/aplotter.py.plot_line:241  16               0.000298      0.000496      0.000031    
-..jim/devl/lees/bucket/nilm/nilmdb/nilmdb/printf.py.printf:4  17               0.000252      0.000334      0.000020    
-..vl/lees/bucket/nilm/nilmdb/tests/aplotter.py.transposed:39  1                0.000229      0.000235      0.000235    
-..vl/lees/bucket/nilm/nilmdb/tests/aplotter.py.y_reversed:45  1                0.000151      0.000174      0.000174    
-
-name           tid              fname                      ttot      scnt
-_MainThread           47269783682784        ..b/python2.7/threading.py.setprofile:88  64.746000     1              

timeit.sh

@@ -1,22 +0,0 @@
-./nilmtool.py destroy /bpnilm/2/raw
-./nilmtool.py create /bpnilm/2/raw RawData
-
-if false; then
-    time zcat /home/jim/bpnilm-data/snapshot-1-20110513-110002.raw.gz | ./nilmtool.py insert -s 20110513-110000 -r 8000 /bpnilm/2/raw
-    time zcat /home/jim/bpnilm-data/snapshot-1-20110513-110002.raw.gz | ./nilmtool.py insert -s 20110513-120001 -r 8000 /bpnilm/2/raw
-else
-    # 170 hours, about 98 gigs uncompressed:
-    for i in $(seq 2000 2016); do
-	time zcat /home/jim/bpnilm-data/snapshot-1-20110513-110002.raw.gz | ./nilmtool.py insert -s ${i}0101-010001 -r 8000 /bpnilm/2/raw
-	time zcat /home/jim/bpnilm-data/snapshot-1-20110513-110002.raw.gz | ./nilmtool.py insert -s ${i}0101-020002 -r 8000 /bpnilm/2/raw
-	time zcat /home/jim/bpnilm-data/snapshot-1-20110513-110002.raw.gz | ./nilmtool.py insert -s ${i}0101-030003 -r 8000 /bpnilm/2/raw
-	time zcat /home/jim/bpnilm-data/snapshot-1-20110513-110002.raw.gz | ./nilmtool.py insert -s ${i}0101-040004 -r 8000 /bpnilm/2/raw
-	time zcat /home/jim/bpnilm-data/snapshot-1-20110513-110002.raw.gz | ./nilmtool.py insert -s ${i}0101-050005 -r 8000 /bpnilm/2/raw
-	time zcat /home/jim/bpnilm-data/snapshot-1-20110513-110002.raw.gz | ./nilmtool.py insert -s ${i}0101-060006 -r 8000 /bpnilm/2/raw
-	time zcat /home/jim/bpnilm-data/snapshot-1-20110513-110002.raw.gz | ./nilmtool.py insert -s ${i}0101-070007 -r 8000 /bpnilm/2/raw
-	time zcat /home/jim/bpnilm-data/snapshot-1-20110513-110002.raw.gz | ./nilmtool.py insert -s ${i}0101-080008 -r 8000 /bpnilm/2/raw
-	time zcat /home/jim/bpnilm-data/snapshot-1-20110513-110002.raw.gz | ./nilmtool.py insert -s ${i}0101-090009 -r 8000 /bpnilm/2/raw
-	time zcat /home/jim/bpnilm-data/snapshot-1-20110513-110002.raw.gz | ./nilmtool.py insert -s ${i}0101-100010 -r 8000 /bpnilm/2/raw
-    done
-fi
-

versioneer.py

@@ -0,0 +1,656 @@
+#! /usr/bin/python
+
+"""versioneer.py
+
+(like a rocketeer, but for versions)
+
+* https://github.com/warner/python-versioneer
+* Brian Warner
+* License: Public Domain
+* Version: 0.7+
+
+This file helps distutils-based projects manage their version number by just
+creating version-control tags.
+
+For developers who work from a VCS-generated tree (e.g. 'git clone' etc),
+each 'setup.py version', 'setup.py build', 'setup.py sdist' will compute a
+version number by asking your version-control tool about the current
+checkout. The version number will be written into a generated _version.py
+file of your choosing, where it can be included by your __init__.py
+
+For users who work from a VCS-generated tarball (e.g. 'git archive'), it will
+compute a version number by looking at the name of the directory created when
+te tarball is unpacked. This conventionally includes both the name of the
+project and a version number.
+
+For users who work from a tarball built by 'setup.py sdist', it will get a
+version number from a previously-generated _version.py file.
+
+As a result, loading code directly from the source tree will not result in a
+real version. If you want real versions from VCS trees (where you frequently
+update from the upstream repository, or do new development), you will need to
+do a 'setup.py version' after each update, and load code from the build/
+directory.
+
+You need to provide this code with a few configuration values:
+
+ versionfile_source:
+    A project-relative pathname into which the generated version strings
+    should be written. This is usually a _version.py next to your project's
+    main __init__.py file. If your project uses src/myproject/__init__.py,
+    this should be 'src/myproject/_version.py'. This file should be checked
+    in to your VCS as usual: the copy created below by 'setup.py
+    update_files' will include code that parses expanded VCS keywords in
+    generated tarballs. The 'build' and 'sdist' commands will replace it with
+    a copy that has just the calculated version string.
+
+ versionfile_build:
+    Like versionfile_source, but relative to the build directory instead of
+    the source directory. These will differ when your setup.py uses
+    'package_dir='. If you have package_dir={'myproject': 'src/myproject'},
+    then you will probably have versionfile_build='myproject/_version.py' and
+    versionfile_source='src/myproject/_version.py'.
+
+ tag_prefix: a string, like 'PROJECTNAME-', which appears at the start of all
+             VCS tags. If your tags look like 'myproject-1.2.0', then you
+             should use tag_prefix='myproject-'. If you use unprefixed tags
+             like '1.2.0', this should be an empty string.
+
+ parentdir_prefix: a string, frequently the same as tag_prefix, which
+                   appears at the start of all unpacked tarball filenames. If
+                   your tarball unpacks into 'myproject-1.2.0', this should
+                   be 'myproject-'.
+
+To use it:
+
+ 1: include this file in the top level of your project
+ 2: make the following changes to the top of your setup.py:
+     import versioneer
+     versioneer.versionfile_source = 'src/myproject/_version.py'
+     versioneer.versionfile_build = 'myproject/_version.py'
+     versioneer.tag_prefix = '' # tags are like 1.2.0
+     versioneer.parentdir_prefix = 'myproject-' # dirname like 'myproject-1.2.0'
+ 3: add the following arguments to the setup() call in your setup.py:
+     version=versioneer.get_version(),
+     cmdclass=versioneer.get_cmdclass(),
+ 4: run 'setup.py update_files', which will create _version.py, and will
+    append the following to your __init__.py:
+     from _version import __version__
+ 5: modify your MANIFEST.in to include versioneer.py
+ 6: add both versioneer.py and the generated _version.py to your VCS
+"""
+
+import os, sys, re
+from distutils.core import Command
+from distutils.command.sdist import sdist as _sdist
+from distutils.command.build import build as _build
+
+versionfile_source = None
+versionfile_build = None
+tag_prefix = None
+parentdir_prefix = None
+
+VCS = "git"
+IN_LONG_VERSION_PY = False
+
+
+LONG_VERSION_PY = '''
+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 = "%(DOLLAR)sFormat:%%d%(DOLLAR)s"
+git_full = "%(DOLLAR)sFormat:%%H%(DOLLAR)s"
+
+
+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 = "%(TAG_PREFIX)s"
+parentdir_prefix = "%(PARENTDIR_PREFIX)s"
+versionfile_source = "%(VERSIONFILE_SOURCE)s"
+
+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
+
+'''
+
+
+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": ""}
+
+import sys
+
+def do_vcs_install(versionfile_source, ipy):
+    GIT = "git"
+    if sys.platform == "win32":
+        GIT = "git.cmd"
+    run_command([GIT, "add", "versioneer.py"])
+    run_command([GIT, "add", versionfile_source])
+    run_command([GIT, "add", ipy])
+    present = False
+    try:
+        f = open(".gitattributes", "r")
+        for line in f.readlines():
+            if line.strip().startswith(versionfile_source):
+                if "export-subst" in line.strip().split()[1:]:
+                    present = True
+        f.close()
+    except EnvironmentError:
+        pass    
+    if not present:
+        f = open(".gitattributes", "a+")
+        f.write("%s export-subst\n" % versionfile_source)
+        f.close()
+        run_command([GIT, "add", ".gitattributes"])
+    
+
+SHORT_VERSION_PY = """
+# This file was generated by 'versioneer.py' (0.7+) from
+# revision-control system data, or from the parent directory name of an
+# unpacked source archive. Distribution tarballs contain a pre-generated copy
+# of this file.
+
+version_version = '%(version)s'
+version_full = '%(full)s'
+def get_versions(default={}, verbose=False):
+    return {'version': version_version, 'full': version_full}
+
+"""
+
+DEFAULT = {"version": "unknown", "full": "unknown"}
+
+def versions_from_file(filename):
+    versions = {}
+    try:
+        f = open(filename)
+    except EnvironmentError:
+        return versions
+    for line in f.readlines():
+        mo = re.match("version_version = '([^']+)'", line)
+        if mo:
+            versions["version"] = mo.group(1)
+        mo = re.match("version_full = '([^']+)'", line)
+        if mo:
+            versions["full"] = mo.group(1)
+    return versions
+
+def write_to_version_file(filename, versions):
+    f = open(filename, "w")
+    f.write(SHORT_VERSION_PY % versions)
+    f.close()
+    print("set %s to '%s'" % (filename, versions["version"]))
+
+
+def get_best_versions(versionfile, tag_prefix, parentdir_prefix,
+                      default=DEFAULT, verbose=False):
+    # returns dict with two keys: 'version' and 'full'
+    #
+    # extract version from first of _version.py, 'git describe', parentdir.
+    # This is meant to work for developers using a source checkout, for users
+    # of a tarball created by 'setup.py sdist', and for users of a
+    # tarball/zipball created by 'git archive' or github's download-from-tag
+    # feature.
+
+    variables = get_expanded_variables(versionfile_source)
+    if variables:
+        ver = versions_from_expanded_variables(variables, tag_prefix)
+        if ver:
+            if verbose: print("got version from expanded variable %s" % ver)
+            return ver
+
+    ver = versions_from_file(versionfile)
+    if ver:
+        if verbose: print("got version from file %s %s" % (versionfile, ver))
+        return ver
+
+    ver = versions_from_vcs(tag_prefix, versionfile_source, verbose)
+    if ver:
+        if verbose: print("got version from git %s" % ver)
+        return ver
+
+    ver = versions_from_parentdir(parentdir_prefix, versionfile_source, verbose)
+    if ver:
+        if verbose: print("got version from parentdir %s" % ver)
+        return ver
+
+    if verbose: print("got version from default %s" % ver)
+    return default
+
+def get_versions(default=DEFAULT, verbose=False):
+    assert versionfile_source is not None, "please set versioneer.versionfile_source"
+    assert tag_prefix is not None, "please set versioneer.tag_prefix"
+    assert parentdir_prefix is not None, "please set versioneer.parentdir_prefix"
+    return get_best_versions(versionfile_source, tag_prefix, parentdir_prefix,
+                             default=default, verbose=verbose)
+def get_version(verbose=False):
+    return get_versions(verbose=verbose)["version"]
+
+class cmd_version(Command):
+    description = "report generated version string"
+    user_options = []
+    boolean_options = []
+    def initialize_options(self):
+        pass
+    def finalize_options(self):
+        pass
+    def run(self):
+        ver = get_version(verbose=True)
+        print("Version is currently: %s" % ver)
+
+
+class cmd_build(_build):
+    def run(self):
+        versions = get_versions(verbose=True)
+        _build.run(self)
+        # now locate _version.py in the new build/ directory and replace it
+        # with an updated value
+        target_versionfile = os.path.join(self.build_lib, versionfile_build)
+        print("UPDATING %s" % target_versionfile)
+        os.unlink(target_versionfile)
+        f = open(target_versionfile, "w")
+        f.write(SHORT_VERSION_PY % versions)
+        f.close()
+
+class cmd_sdist(_sdist):
+    def run(self):
+        versions = get_versions(verbose=True)
+        self._versioneer_generated_versions = versions
+        # unless we update this, the command will keep using the old version
+        self.distribution.metadata.version = versions["version"]
+        return _sdist.run(self)
+
+    def make_release_tree(self, base_dir, files):
+        _sdist.make_release_tree(self, base_dir, files)
+        # now locate _version.py in the new base_dir directory (remembering
+        # that it may be a hardlink) and replace it with an updated value
+        target_versionfile = os.path.join(base_dir, versionfile_source)
+        print("UPDATING %s" % target_versionfile)
+        os.unlink(target_versionfile)
+        f = open(target_versionfile, "w")
+        f.write(SHORT_VERSION_PY % self._versioneer_generated_versions)
+        f.close()
+
+INIT_PY_SNIPPET = """
+from ._version import get_versions
+__version__ = get_versions()['version']
+del get_versions
+"""
+
+class cmd_update_files(Command):
+    description = "modify __init__.py and create _version.py"
+    user_options = []
+    boolean_options = []
+    def initialize_options(self):
+        pass
+    def finalize_options(self):
+        pass
+    def run(self):
+        ipy = os.path.join(os.path.dirname(versionfile_source), "__init__.py")
+        print(" creating %s" % versionfile_source)
+        f = open(versionfile_source, "w")
+        f.write(LONG_VERSION_PY % {"DOLLAR": "$",
+                                   "TAG_PREFIX": tag_prefix,
+                                   "PARENTDIR_PREFIX": parentdir_prefix,
+                                   "VERSIONFILE_SOURCE": versionfile_source,
+                                   })
+        f.close()
+        try:
+            old = open(ipy, "r").read()
+        except EnvironmentError:
+            old = ""
+        if INIT_PY_SNIPPET not in old:
+            print(" appending to %s" % ipy)
+            f = open(ipy, "a")
+            f.write(INIT_PY_SNIPPET)
+            f.close()
+        else:
+            print(" %s unmodified" % ipy)
+        do_vcs_install(versionfile_source, ipy)
+
+def get_cmdclass():
+    return {'version': cmd_version,
+            'update_files': cmd_update_files,
+            'build': cmd_build,
+            'sdist': cmd_sdist,
+            }