synapse-product/tests/util/test_logcontext.py
Richard van der Hoff 4a15a3e4d5
Include eventid in log lines when processing incoming federation transactions ()
when processing incoming transactions, it can be hard to see what's going on,
because we process a bunch of stuff in parallel, and because we may end up
recursively working our way through a chain of three or four events.

This commit creates a way to use logcontexts to add the relevant event ids to
the log lines.
2018-09-27 11:25:34 +01:00

181 lines
5.7 KiB
Python

import twisted.python.failure
from twisted.internet import defer, reactor
from synapse.util import Clock, logcontext
from synapse.util.logcontext import LoggingContext
from .. import unittest
class LoggingContextTestCase(unittest.TestCase):
def _check_test_key(self, value):
self.assertEquals(LoggingContext.current_context().request, value)
def test_with_context(self):
with LoggingContext() as context_one:
context_one.request = "test"
self._check_test_key("test")
@defer.inlineCallbacks
def test_sleep(self):
clock = Clock(reactor)
@defer.inlineCallbacks
def competing_callback():
with LoggingContext() as competing_context:
competing_context.request = "competing"
yield clock.sleep(0)
self._check_test_key("competing")
reactor.callLater(0, competing_callback)
with LoggingContext() as context_one:
context_one.request = "one"
yield clock.sleep(0)
self._check_test_key("one")
def _test_run_in_background(self, function):
sentinel_context = LoggingContext.current_context()
callback_completed = [False]
def test():
context_one.request = "one"
d = function()
def cb(res):
self._check_test_key("one")
callback_completed[0] = True
return res
d.addCallback(cb)
return d
with LoggingContext() as context_one:
context_one.request = "one"
# fire off function, but don't wait on it.
logcontext.run_in_background(test)
self._check_test_key("one")
# now wait for the function under test to have run, and check that
# the logcontext is left in a sane state.
d2 = defer.Deferred()
def check_logcontext():
if not callback_completed[0]:
reactor.callLater(0.01, check_logcontext)
return
# make sure that the context was reset before it got thrown back
# into the reactor
try:
self.assertIs(LoggingContext.current_context(), sentinel_context)
d2.callback(None)
except BaseException:
d2.errback(twisted.python.failure.Failure())
reactor.callLater(0.01, check_logcontext)
# test is done once d2 finishes
return d2
def test_run_in_background_with_blocking_fn(self):
@defer.inlineCallbacks
def blocking_function():
yield Clock(reactor).sleep(0)
return self._test_run_in_background(blocking_function)
def test_run_in_background_with_non_blocking_fn(self):
@defer.inlineCallbacks
def nonblocking_function():
with logcontext.PreserveLoggingContext():
yield defer.succeed(None)
return self._test_run_in_background(nonblocking_function)
def test_run_in_background_with_chained_deferred(self):
# a function which returns a deferred which looks like it has been
# called, but is actually paused
def testfunc():
return logcontext.make_deferred_yieldable(_chained_deferred_function())
return self._test_run_in_background(testfunc)
@defer.inlineCallbacks
def test_make_deferred_yieldable(self):
# a function which retuns an incomplete deferred, but doesn't follow
# the synapse rules.
def blocking_function():
d = defer.Deferred()
reactor.callLater(0, d.callback, None)
return d
sentinel_context = LoggingContext.current_context()
with LoggingContext() as context_one:
context_one.request = "one"
d1 = logcontext.make_deferred_yieldable(blocking_function())
# make sure that the context was reset by make_deferred_yieldable
self.assertIs(LoggingContext.current_context(), sentinel_context)
yield d1
# now it should be restored
self._check_test_key("one")
@defer.inlineCallbacks
def test_make_deferred_yieldable_with_chained_deferreds(self):
sentinel_context = LoggingContext.current_context()
with LoggingContext() as context_one:
context_one.request = "one"
d1 = logcontext.make_deferred_yieldable(_chained_deferred_function())
# make sure that the context was reset by make_deferred_yieldable
self.assertIs(LoggingContext.current_context(), sentinel_context)
yield d1
# now it should be restored
self._check_test_key("one")
@defer.inlineCallbacks
def test_make_deferred_yieldable_on_non_deferred(self):
"""Check that make_deferred_yieldable does the right thing when its
argument isn't actually a deferred"""
with LoggingContext() as context_one:
context_one.request = "one"
d1 = logcontext.make_deferred_yieldable("bum")
self._check_test_key("one")
r = yield d1
self.assertEqual(r, "bum")
self._check_test_key("one")
def test_nested_logging_context(self):
with LoggingContext(request="foo"):
nested_context = logcontext.nested_logging_context(suffix="bar")
self.assertEqual(nested_context.request, "foo-bar")
# a function which returns a deferred which has been "called", but
# which had a function which returned another incomplete deferred on
# its callback list, so won't yet call any other new callbacks.
def _chained_deferred_function():
d = defer.succeed(None)
def cb(res):
d2 = defer.Deferred()
reactor.callLater(0, d2.callback, res)
return d2
d.addCallback(cb)
return d