nilmdb/tests/test_client.py

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# -*- coding: utf-8 -*-
import nilmdb.server
import nilmdb.client
from nilmdb.utils.printf import *
from nilmdb.utils import timestamper
from nilmdb.client import ClientError, ServerError
from nilmdb.utils import datetime_tz
from nose.plugins.skip import SkipTest
from nose.tools import *
from nose.tools import assert_raises
import itertools
import distutils.version
import os
import sys
import threading
import cStringIO
import simplejson as json
import unittest
import warnings
import resource
import time
import re
from testutil.helpers import *
testdb = "tests/client-testdb"
testurl = "http://localhost:32180/"
def setup_module():
global test_server, test_db
# Clear out DB
recursive_unlink(testdb)
# Start web app on a custom port
test_db = nilmdb.utils.serializer_proxy(nilmdb.server.NilmDB)(testdb)
test_server = nilmdb.server.Server(test_db, host = "127.0.0.1",
port = 32180, stoppable = False,
fast_shutdown = True,
force_traceback = True)
test_server.start(blocking = False)
def teardown_module():
global test_server, test_db
# Close web app
test_server.stop()
test_db.close()
class TestClient(object):
def test_client_01_basic(self):
# Test a fake host
client = nilmdb.client.Client(url = "http://localhost:1/")
with assert_raises(nilmdb.client.ServerError):
client.version()
client.close()
# Then a fake URL on a real host
client = nilmdb.client.Client(url = "http://localhost:32180/fake/")
with assert_raises(nilmdb.client.ClientError):
client.version()
client.close()
# Now a real URL with no http:// prefix
client = nilmdb.client.Client(url = "localhost:32180")
version = client.version()
client.close()
# Now use the real URL
client = nilmdb.client.Client(url = testurl)
version = client.version()
eq_(distutils.version.LooseVersion(version),
distutils.version.LooseVersion(test_server.version))
# Bad URLs should give 404, not 500
with assert_raises(ClientError):
client.http.get("/stream/create")
client.close()
def test_client_02_createlist(self):
# Basic stream tests, like those in test_nilmdb:test_stream
client = nilmdb.client.Client(url = testurl)
# Database starts empty
eq_(client.stream_list(), [])
# Bad path
with assert_raises(ClientError):
client.stream_create("foo/bar/baz", "float32_8")
with assert_raises(ClientError):
client.stream_create("/foo", "float32_8")
# Bad layout type
with assert_raises(ClientError):
client.stream_create("/newton/prep", "NoSuchLayout")
# Bad method types
with assert_raises(ClientError):
client.http.put("/stream/list","")
# Try a bunch of times to make sure the request body is getting consumed
for x in range(10):
with assert_raises(ClientError):
client.http.post("/stream/list")
client = nilmdb.client.Client(url = testurl)
# Create three streams
client.stream_create("/newton/prep", "float32_8")
client.stream_create("/newton/raw", "uint16_6")
client.stream_create("/newton/zzz/rawnotch", "uint16_9")
# Verify we got 3 streams
eq_(client.stream_list(), [ ["/newton/prep", "float32_8"],
["/newton/raw", "uint16_6"],
["/newton/zzz/rawnotch", "uint16_9"]
])
# Match just one type or one path
eq_(client.stream_list(layout="uint16_6"),
[ ["/newton/raw", "uint16_6"] ])
eq_(client.stream_list(path="/newton/raw"),
[ ["/newton/raw", "uint16_6"] ])
# 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", "uint16_6")
resource.setrlimit(resource.RLIMIT_FSIZE, limit)
client.close()
def test_client_03_metadata(self):
client = nilmdb.client.Client(url = testurl)
# Set / get metadata
eq_(client.stream_get_metadata("/newton/prep"), {})
eq_(client.stream_get_metadata("/newton/raw"), {})
meta1 = { "description": "The Data",
"v_scale": "1.234" }
meta2 = { "description": "The Data" }
meta3 = { "v_scale": "1.234" }
client.stream_set_metadata("/newton/prep", meta1)
client.stream_update_metadata("/newton/prep", {})
client.stream_update_metadata("/newton/raw", meta2)
client.stream_update_metadata("/newton/raw", meta3)
eq_(client.stream_get_metadata("/newton/prep"), meta1)
eq_(client.stream_get_metadata("/newton/raw"), meta1)
eq_(client.stream_get_metadata("/newton/raw",
[ "description" ] ), meta2)
eq_(client.stream_get_metadata("/newton/raw",
[ "description", "v_scale" ] ), meta1)
# missing key
eq_(client.stream_get_metadata("/newton/raw", "descr"),
{ "descr": None })
eq_(client.stream_get_metadata("/newton/raw", [ "descr" ]),
{ "descr": None })
# test wrong types (list instead of dict)
with assert_raises(ClientError):
client.stream_set_metadata("/newton/prep", [1,2,3])
with assert_raises(ClientError):
client.stream_update_metadata("/newton/prep", [1,2,3])
# test wrong types (dict of non-strings)
# numbers are OK; they'll get converted to strings
client.stream_set_metadata("/newton/prep", { "hello": 1234 })
# anything else is not
with assert_raises(ClientError):
client.stream_set_metadata("/newton/prep", { "world": { 1: 2 } })
with assert_raises(ClientError):
client.stream_set_metadata("/newton/prep", { "world": [ 1, 2 ] })
client.close()
def test_client_04_insert(self):
client = nilmdb.client.Client(url = testurl)
# Limit _max_data to 1 MB, since our test file is 1.5 MB
old_max_data = nilmdb.client.client.StreamInserter._max_data
nilmdb.client.client.StreamInserter._max_data = 1 * 1024 * 1024
datetime_tz.localtz_set("America/New_York")
testfile = "tests/data/prep-20120323T1000"
start = nilmdb.utils.time.parse_time("20120323T1000")
rate = 120
# First try a nonexistent path
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 = timestamper.TimestamperRate(testfile, start, 120)
data = reversed(list(data))
with assert_raises(ClientError) as e:
result = client.stream_insert("/newton/prep", data)
in_("400 Bad Request", str(e.exception))
in2_("timestamp is not monotonically increasing",
"start must precede end", str(e.exception))
# Now try empty data (no server request made)
empty = cStringIO.StringIO("")
data = timestamper.TimestamperRate(empty, start, 120)
result = client.stream_insert("/newton/prep", data)
eq_(result, None)
# It's OK to insert an empty interval
client.http.put("stream/insert", "", { "path": "/newton/prep",
"start": 1, "end": 2 })
eq_(list(client.stream_intervals("/newton/prep")), [[1, 2]])
client.stream_remove("/newton/prep")
eq_(list(client.stream_intervals("/newton/prep")), [])
# Timestamps can be negative too
client.http.put("stream/insert", "", { "path": "/newton/prep",
"start": -2, "end": -1 })
eq_(list(client.stream_intervals("/newton/prep")), [[-2, -1]])
client.stream_remove("/newton/prep")
eq_(list(client.stream_intervals("/newton/prep")), [])
# Intervals that end at zero shouldn't be any different
client.http.put("stream/insert", "", { "path": "/newton/prep",
"start": -1, "end": 0 })
eq_(list(client.stream_intervals("/newton/prep")), [[-1, 0]])
client.stream_remove("/newton/prep")
eq_(list(client.stream_intervals("/newton/prep")), [])
# Try forcing a server request with equal start and end
with assert_raises(ClientError) as e:
client.http.put("stream/insert", "", { "path": "/newton/prep",
"start": 0, "end": 0 })
in_("400 Bad Request", str(e.exception))
in_("start must precede end", str(e.exception))
# Specify start/end (starts too late)
data = timestamper.TimestamperRate(testfile, start, 120)
with assert_raises(ClientError) as e:
result = client.stream_insert("/newton/prep", data,
start + 5000000, start + 120000000)
in_("400 Bad Request", str(e.exception))
in_("Data timestamp 1332511200000000 < start time 1332511205000000",
str(e.exception))
# Specify start/end (ends too early)
data = timestamper.TimestamperRate(testfile, start, 120)
with assert_raises(ClientError) as e:
result = client.stream_insert("/newton/prep", data,
start, start + 1000000)
in_("400 Bad Request", str(e.exception))
# Client chunks the input, so the exact timestamp here might change
# if the chunk positions change.
assert(re.search("Data timestamp 13325[0-9]+ "
">= end time 1332511201000000", str(e.exception))
is not None)
# Now do the real load
data = timestamper.TimestamperRate(testfile, start, 120)
result = client.stream_insert("/newton/prep", data,
start, start + 119999777)
# Verify the intervals. Should be just one, even if the data
# was inserted in chunks, due to nilmdb interval concatenation.
intervals = list(client.stream_intervals("/newton/prep"))
eq_(intervals, [[start, start + 119999777]])
# Try some overlapping data -- just insert it again
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_("verlap", str(e.exception))
nilmdb.client.client.StreamInserter._max_data = old_max_data
client.close()
def test_client_05_extractremove(self):
# Misc tests for extract and remove. Most of them are in test_cmdline.
client = nilmdb.client.Client(url = testurl)
for x in client.stream_extract("/newton/prep",
999123000000, 999124000000):
raise AssertionError("shouldn't be any data for this request")
with assert_raises(ClientError) as e:
client.stream_remove("/newton/prep", 123000000, 120000000)
# Test count
eq_(client.stream_count("/newton/prep"), 14400)
client.close()
def test_client_06_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.Client(url = testurl)
# Trigger a client error in generator
start = nilmdb.utils.time.parse_time("20120323T2000")
end = nilmdb.utils.time.parse_time("20120323T1000")
for function in [ client.stream_intervals, client.stream_extract ]:
with assert_raises(ClientError) as e:
function("/newton/prep", start, end).next()
in_("400 Bad Request", str(e.exception))
in_("start must precede end", str(e.exception))
# Trigger a curl error in generator
with assert_raises(ServerError) as e:
client.http.get_gen("http://nosuchurl.example.com./").next()
# Trigger a curl error in generator
with assert_raises(ServerError) as e:
client.http.get_gen("http://nosuchurl.example.com./").next()
# Check 404 for missing streams
for function in [ client.stream_intervals, client.stream_extract ]:
with assert_raises(ClientError) as e:
function("/no/such/stream").next()
in_("404 Not Found", str(e.exception))
in_("No such stream", str(e.exception))
client.close()
def test_client_07_headers(self):
# Make sure that /stream/intervals and /stream/extract
# properly return streaming, chunked, text/plain response.
# Pokes around in client.http internals a bit to look at the
# response headers.
client = nilmdb.client.Client(url = testurl)
http = client.http
# Use a warning rather than returning a test failure for the
# transfer-encoding, so that we can still disable chunked
# responses for debugging.
def headers():
h = ""
for (k, v) in http._last_response.headers.items():
h += k + ": " + v + "\n"
return h.lower()
# Intervals
x = http.get("stream/intervals", { "path": "/newton/prep" })
if "transfer-encoding: chunked" not in headers():
warnings.warn("Non-chunked HTTP response for /stream/intervals")
if "content-type: application/x-json-stream" not in headers():
raise AssertionError("/stream/intervals content type "
"is not application/x-json-stream:\n" +
headers())
# Extract
x = http.get("stream/extract",
{ "path": "/newton/prep",
"start": "123",
"end": "124" })
if "transfer-encoding: chunked" not in headers():
warnings.warn("Non-chunked HTTP response for /stream/extract")
if "content-type: text/plain;charset=utf-8" not in headers():
raise AssertionError("/stream/extract is not text/plain:\n" +
headers())
client.close()
def test_client_08_unicode(self):
# Try both with and without posting JSON
for post_json in (False, True):
# Basic Unicode tests
client = nilmdb.client.Client(url = testurl, post_json = post_json)
# Delete streams that exist
for stream in client.stream_list():
client.stream_remove(stream[0])
client.stream_destroy(stream[0])
# Database is empty
eq_(client.stream_list(), [])
# Create Unicode stream, match it
raw = [ u"/düsseldorf/raw", u"uint16_6" ]
prep = [ u"/düsseldorf/prep", u"uint16_6" ]
client.stream_create(*raw)
eq_(client.stream_list(), [raw])
eq_(client.stream_list(layout=raw[1]), [raw])
eq_(client.stream_list(path=raw[0]), [raw])
client.stream_create(*prep)
eq_(client.stream_list(), [prep, raw])
# Set / get metadata with Unicode keys and values
eq_(client.stream_get_metadata(raw[0]), {})
eq_(client.stream_get_metadata(prep[0]), {})
meta1 = { u"alpha": u"α",
u"β": u"beta" }
meta2 = { u"alpha": u"α" }
meta3 = { u"β": u"beta" }
client.stream_set_metadata(prep[0], meta1)
client.stream_update_metadata(prep[0], {})
client.stream_update_metadata(raw[0], meta2)
client.stream_update_metadata(raw[0], meta3)
eq_(client.stream_get_metadata(prep[0]), meta1)
eq_(client.stream_get_metadata(raw[0]), meta1)
eq_(client.stream_get_metadata(raw[0], [ "alpha" ]), meta2)
eq_(client.stream_get_metadata(raw[0], [ "alpha", "β" ]), meta1)
client.close()
def test_client_09_closing(self):
# Make sure we actually close sockets correctly. New
# connections will block for a while if they're not, since the
# server will stop accepting new connections.
for test in [1, 2]:
start = time.time()
for i in range(50):
if time.time() - start > 15:
raise AssertionError("Connections seem to be blocking... "
"probably not closing properly.")
if test == 1:
# explicit close
client = nilmdb.client.Client(url = testurl)
with assert_raises(ClientError) as e:
client.stream_remove("/newton/prep", 123, 120)
client.close() # remove this to see the failure
elif test == 2:
# use the context manager
with nilmdb.client.Client(url = testurl) as c:
with assert_raises(ClientError) as e:
c.stream_remove("/newton/prep", 123, 120)
def test_client_10_context(self):
# Test using the client's stream insertion context manager to
# insert data.
client = nilmdb.client.Client(testurl)
client.stream_create("/context/test", "uint16_1")
with client.stream_insert_context("/context/test") as ctx:
# override _max_data to trigger frequent server updates
ctx._max_data = 15
ctx.insert("100 1\n")
ctx.insert("101 ")
ctx.insert("1\n102 1")
ctx.insert("")
ctx.insert("\n103 1\n")
ctx.insert("104 1\n")
ctx.insert("# hello\n")
ctx.insert(" # hello\n")
ctx.insert(" 105 1\n")
ctx.finalize()
ctx.insert("107 1\n")
ctx.update_end(108)
ctx.finalize()
ctx.update_start(109)
ctx.insert("110 1\n")
ctx.insert("111 1\n")
ctx.send()
ctx.insert("112 1\n")
ctx.insert("113 1\n")
ctx.insert("114 1\n")
ctx.update_end(116)
ctx.insert("115 1\n")
ctx.update_end(117)
ctx.insert("116 1\n")
ctx.update_end(118)
ctx.insert("117 1" +
" # this is super long" * 100 +
"\n")
ctx.finalize()
ctx.insert("# this is super long" * 100)
with assert_raises(ClientError):
with client.stream_insert_context("/context/test", 100, 200) as ctx:
ctx.insert("118 1\n")
with assert_raises(ClientError):
with client.stream_insert_context("/context/test", 200, 300) as ctx:
ctx.insert("118 1\n")
with assert_raises(ClientError):
with client.stream_insert_context("/context/test") as ctx:
ctx.insert("bogus data\n")
with client.stream_insert_context("/context/test", 200, 300) as ctx:
# make sure our override wasn't permanent
ne_(ctx._max_data, 15)
ctx.insert("225 1\n")
ctx.finalize()
with assert_raises(ClientError):
with client.stream_insert_context("/context/test", 300, 400) as ctx:
ctx.insert("301 1\n")
ctx.insert("302 2\n")
ctx.insert("303 3\n")
ctx.insert("304 4\n")
ctx.insert("304 4\n") # non-monotonic after a few lines
ctx.finalize()
eq_(list(client.stream_intervals("/context/test")),
[ [ 100, 106 ],
[ 107, 108 ],
[ 109, 118 ],
[ 200, 300 ] ])
# destroy stream (try without removing data first)
with assert_raises(ClientError):
client.stream_destroy("/context/test")
client.stream_remove("/context/test")
client.stream_destroy("/context/test")
client.close()
def test_client_11_emptyintervals(self):
# Empty intervals are ok! If recording detection events
# by inserting rows into the database, we want to be able to
# have an interval where no events occurred. Test them here.
client = nilmdb.client.Client(testurl)
client.stream_create("/empty/test", "uint16_1")
def info():
result = []
for interval in list(client.stream_intervals("/empty/test")):
result.append((client.stream_count("/empty/test", *interval),
interval))
return result
eq_(info(), [])
# Insert a region with just a few points
with client.stream_insert_context("/empty/test") as ctx:
ctx.update_start(100)
ctx.insert("140 1\n")
ctx.insert("150 1\n")
ctx.insert("160 1\n")
ctx.update_end(200)
ctx.finalize()
eq_(info(), [(3, [100, 200])])
# Delete chunk, which will leave one data point and two intervals
client.stream_remove("/empty/test", 145, 175)
eq_(info(), [(1, [100, 145]),
(0, [175, 200])])
# Try also creating a completely empty interval from scratch,
# in a few different ways.
client.stream_insert("/empty/test", "", 300, 350)
client.stream_insert("/empty/test", [], 400, 450)
with client.stream_insert_context("/empty/test", 500, 550):
pass
# If enough timestamps aren't provided, empty streams won't be created.
client.stream_insert("/empty/test", [])
with client.stream_insert_context("/empty/test"):
pass
client.stream_insert("/empty/test", [], start = 600)
with client.stream_insert_context("/empty/test", start = 700):
pass
client.stream_insert("/empty/test", [], end = 850)
with client.stream_insert_context("/empty/test", end = 950):
pass
# Try various things that might cause problems
with client.stream_insert_context("/empty/test", 1000, 1050):
ctx.finalize() # inserts [1000, 1050]
ctx.finalize() # nothing
ctx.finalize() # nothing
ctx.insert("1100 1\n")
ctx.finalize() # inserts [1100, 1101]
ctx.update_start(1199)
ctx.insert("1200 1\n")
ctx.update_end(1250)
ctx.finalize() # inserts [1199, 1250]
ctx.update_start(1299)
ctx.finalize() # nothing
ctx.update_end(1350)
ctx.finalize() # nothing
ctx.update_start(1400)
ctx.insert("# nothing!\n")
ctx.update_end(1450)
ctx.finalize()
ctx.update_start(1500)
ctx.insert("# nothing!")
ctx.update_end(1550)
ctx.finalize()
ctx.insert("# nothing!\n" * 10)
ctx.finalize()
# implicit last finalize inserts [1400, 1450]
# Check everything
eq_(info(), [(1, [100, 145]),
(0, [175, 200]),
(0, [300, 350]),
(0, [400, 450]),
(0, [500, 550]),
(0, [1000, 1050]),
(1, [1100, 1101]),
(1, [1199, 1250]),
(0, [1400, 1450]),
(0, [1500, 1550]),
])
# Clean up
client.stream_remove("/empty/test")
client.stream_destroy("/empty/test")
client.close()
def test_client_12_persistent(self):
# Check that connections are persistent when they should be.
# This is pretty hard to test; we have to poke deep into
# the Requests library.
with nilmdb.client.Client(url = testurl) as c:
def connections():
try:
poolmanager = c.http._last_response.connection.poolmanager
pool = poolmanager.pools[('http','localhost',32180)]
return (pool.num_connections, pool.num_requests)
except Exception:
raise SkipTest("can't get connection info")
# First request makes a connection
c.stream_create("/persist/test", "uint16_1")
eq_(connections(), (1, 1))
# Non-generator
c.stream_list("/persist/test")
eq_(connections(), (1, 2))
c.stream_list("/persist/test")
eq_(connections(), (1, 3))
# Generators
for x in c.stream_intervals("/persist/test"):
pass
eq_(connections(), (1, 4))
for x in c.stream_intervals("/persist/test"):
pass
eq_(connections(), (1, 5))
# Clean up
c.stream_remove("/persist/test")
c.stream_destroy("/persist/test")
eq_(connections(), (1, 7))
def test_client_13_timestamp_rounding(self):
# Test potentially bad timestamps (due to floating point
# roundoff etc). The server will round floating point values
# to the nearest int.
client = nilmdb.client.Client(testurl)
client.stream_create("/rounding/test", "uint16_1")
with client.stream_insert_context("/rounding/test",
100000000, 200000000.1) as ctx:
ctx.insert("100000000.1 1\n")
ctx.insert("150000000.00003 1\n")
ctx.insert("199999999.4 1\n")
eq_(list(client.stream_intervals("/rounding/test")),
[ [ 100000000, 200000000 ] ])
with assert_raises(ClientError):
with client.stream_insert_context("/rounding/test",
200000000, 300000000) as ctx:
ctx.insert("200000000 1\n")
ctx.insert("250000000 1\n")
# Server will round this and give an error on finalize()
ctx.insert("299999999.99 1\n")
client.stream_remove("/rounding/test")
client.stream_destroy("/rounding/test")
client.close()