def test_verify_json_for_server(self):
kr = keyring.Keyring(self.hs)
key1 = signedjson.key.generate_signing_key(1)
yield self.hs.datastore.store_server_verify_key(
"server9", "", time.time() * 1000, signedjson.key.get_verify_key(key1)
)
json1 = {}
signedjson.sign.sign_json(json1, "server9", key1)
sentinel_context = LoggingContext.current_context()
with LoggingContext("one") as context_one:
context_one.request = "one"
defer = kr.verify_json_for_server("server9", {})
try:
yield defer
self.fail("should fail on unsigned json")
except SynapseError:
pass
self.assertIs(LoggingContext.current_context(), context_one)
defer = kr.verify_json_for_server("server9", json1)
self.assertFalse(defer.called)
self.assertIs(LoggingContext.current_context(), sentinel_context)
yield defer
self.assertIs(LoggingContext.current_context(), context_one)
def setUp(orig):
# enable debugging of delayed calls - this means that we get a
# traceback when a unit test exits leaving things on the reactor.
twisted.internet.base.DelayedCall.debug = True
# if we're not starting in the sentinel logcontext, then to be honest
# all future bets are off.
if LoggingContext.current_context() is not LoggingContext.sentinel:
self.fail(
"Test starting with non-sentinel logging context %s"
% (LoggingContext.current_context(),)
)
old_level = logging.getLogger().level
if level is not None and old_level != level:
@around(self)
def tearDown(orig):
ret = orig()
logging.getLogger().setLevel(old_level)
return ret
logging.getLogger().setLevel(level)
return orig()
def assert_sentinel_context(self):
if LoggingContext.current_context() != LoggingContext.sentinel:
self.fail(
"Expected sentinel context but got %s" % (
LoggingContext.current_context(),
)
)
class Measure(object):
__slots__ = [
"clock", "name", "start_context", "start", "new_context", "ru_utime",
"ru_stime", "db_txn_count", "db_txn_duration", "created_context"
]
def __init__(self, clock, name):
self.clock = clock
self.name = name
self.start_context = None
self.start = None
self.created_context = False
def __enter__(self):
self.start = self.clock.time_msec()
self.start_context = LoggingContext.current_context()
if not self.start_context:
logger.warn("Entered Measure without log context: %s", self.name)
self.start_context = LoggingContext("Measure")
self.start_context.__enter__()
self.created_context = True
self.ru_utime, self.ru_stime = self.start_context.get_resource_usage()
self.db_txn_count = self.start_context.db_txn_count
self.db_txn_duration = self.start_context.db_txn_duration
def __exit__(self, exc_type, exc_val, exc_tb):
if exc_type is not None or not self.start_context:
return
duration = self.clock.time_msec() - self.start
block_timer.inc_by(duration, self.name)
context = LoggingContext.current_context()
if context != self.start_context:
logger.warn(
"Context have unexpectedly changed from '%s' to '%s'. (%r)",
context, self.start_context, self.name
)
return
if not context:
logger.warn("Expected context. (%r)", self.name)
return
ru_utime, ru_stime = context.get_resource_usage()
block_ru_utime.inc_by(ru_utime - self.ru_utime, self.name)
block_ru_stime.inc_by(ru_stime - self.ru_stime, self.name)
block_db_txn_count.inc_by(
context.db_txn_count - self.db_txn_count, self.name
)
block_db_txn_duration.inc_by(
context.db_txn_duration - self.db_txn_duration, self.name
)
if self.created_context:
self.start_context.__exit__(exc_type, exc_val, exc_tb)
def tearDown(orig):
ret = orig()
# force a GC to workaround problems with deferreds leaking logcontexts when
# they are GCed (see the logcontext docs)
gc.collect()
LoggingContext.set_current_context(LoggingContext.sentinel)
return ret
def errback(res, deferred_name):
self.assertIs(
LoggingContext.current_context(),
context_one,
"errback %s run in unexpected logcontext %s"
% (deferred_name, LoggingContext.current_context()),
)
return res
def check_ctx(r):
if LoggingContext.current_context() != start_context:
err = "%s completion of %s changed context from %s to %s" % (
"Failure" if isinstance(r, Failure) else "Success",
f, start_context, LoggingContext.current_context(),
)
print(err, file=sys.stderr)
raise Exception(err)
return r
def __enter__(self):
self.start = self.clock.time()
self.start_context = LoggingContext.current_context()
if not self.start_context:
self.start_context = LoggingContext("Measure")
self.start_context.__enter__()
self.created_context = True
self.start_usage = self.start_context.get_resource_usage()
in_flight.register((self.name,), self._update_in_flight)
def __enter__(self):
self.start = self.clock.time_msec()
self.start_context = LoggingContext.current_context()
if not self.start_context:
self.start_context = LoggingContext("Measure")
self.start_context.__enter__()
self.created_context = True
self.ru_utime, self.ru_stime = self.start_context.get_resource_usage()
self.db_txn_count = self.start_context.db_txn_count
self.db_txn_duration = self.start_context.db_txn_duration
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")
def runInteraction(self, desc, func, *args, **kwargs):
"""Wraps the .runInteraction() method on the underlying db_pool."""
current_context = LoggingContext.current_context()
start_time = time.time() * 1000
after_callbacks = []
def inner_func(conn, *args, **kwargs):
with LoggingContext("runInteraction") as context:
sql_scheduling_timer.inc_by(time.time() * 1000 - start_time)
if self.database_engine.is_connection_closed(conn):
logger.debug("Reconnecting closed database connection")
conn.reconnect()
current_context.copy_to(context)
return self._new_transaction(
conn, desc, after_callbacks, func, *args, **kwargs
)
result = yield preserve_context_over_fn(
self._db_pool.runWithConnection,
inner_func, *args, **kwargs
)
for after_callback, after_args in after_callbacks:
after_callback(*after_args)
defer.returnValue(result)
def wait_for_sync_for_user(self, sync_config, since_token=None, timeout=0,
full_state=False):
"""Get the sync for a client if we have new data for it now. Otherwise
wait for new data to arrive on the server. If the timeout expires, then
return an empty sync result.
Returns:
A Deferred SyncResult.
"""
context = LoggingContext.current_context()
if context:
if since_token is None:
context.tag = "initial_sync"
elif full_state:
context.tag = "full_state_sync"
else:
context.tag = "incremental_sync"
if timeout == 0 or since_token is None or full_state:
# we are going to return immediately, so don't bother calling
# notifier.wait_for_events.
result = yield self.current_sync_for_user(
sync_config, since_token, full_state=full_state,
)
defer.returnValue(result)
else:
def current_sync_callback(before_token, after_token):
return self.current_sync_for_user(sync_config, since_token)
result = yield self.notifier.wait_for_events(
sync_config.user.to_string(), timeout, current_sync_callback,
from_token=since_token,
)
defer.returnValue(result)
def finished_processing(self):
try:
context = LoggingContext.current_context()
ru_utime, ru_stime = context.get_resource_usage()
db_txn_count = context.db_txn_count
db_txn_duration = context.db_txn_duration
except:
ru_utime, ru_stime = (0, 0)
db_txn_count, db_txn_duration = (0, 0)
self.site.access_logger.info(
"%s - %s - {%s}"
" Processed request: %dms (%dms, %dms) (%dms/%d)"
" %sB %s \"%s %s %s\" \"%s\"",
self.getClientIP(),
self.site.site_tag,
self.authenticated_entity,
int(time.time() * 1000) - self.start_time,
int(ru_utime * 1000),
int(ru_stime * 1000),
int(db_txn_duration * 1000),
int(db_txn_count),
self.sentLength,
self.code,
self.method,
self.get_redacted_uri(),
self.clientproto,
self.get_user_agent(),
)
def __exit__(self, exc_type, exc_val, exc_tb):
if exc_type is not None or not self.start_context:
return
duration = self.clock.time_msec() - self.start
block_timer.inc_by(duration, self.name)
context = LoggingContext.current_context()
if context != self.start_context:
logger.warn(
"Context have unexpectedly changed from '%s' to '%s'. (%r)",
context, self.start_context, self.name
)
return
if not context:
logger.warn("Expected context. (%r)", self.name)
return
ru_utime, ru_stime = context.get_resource_usage()
block_ru_utime.inc_by(ru_utime - self.ru_utime, self.name)
block_ru_stime.inc_by(ru_stime - self.ru_stime, self.name)
block_db_txn_count.inc_by(
context.db_txn_count - self.db_txn_count, self.name
)
block_db_txn_duration.inc_by(
context.db_txn_duration - self.db_txn_duration, self.name
)
if self.created_context:
self.start_context.__exit__(exc_type, exc_val, exc_tb)
def runInteraction(self, desc, func, *args, **kwargs):
"""Wraps the .runInteraction() method on the underlying db_pool."""
current_context = LoggingContext.current_context()
def inner_func(txn, *args, **kwargs):
with LoggingContext("runInteraction") as context:
current_context.copy_to(context)
start = time.clock() * 1000
txn_id = SQLBaseStore._TXN_ID
# We don't really need these to be unique, so lets stop it from
# growing really large.
self._TXN_ID = (self._TXN_ID + 1) % (sys.maxint - 1)
name = "%s-%x" % (desc, txn_id, )
transaction_logger.debug("[TXN START] {%s}", name)
try:
return func(LoggingTransaction(txn, name), *args, **kwargs)
except:
logger.exception("[TXN FAIL] {%s}", name)
raise
finally:
end = time.clock() * 1000
transaction_logger.debug(
"[TXN END] {%s} %f",
name, end - start
)
with PreserveLoggingContext():
result = yield self._db_pool.runInteraction(
inner_func, *args, **kwargs
)
defer.returnValue(result)
def do_lookup():
with LoggingContext("one") as ctx:
resolve_d = resolver.resolve_service(service_name)
self.assertNoResult(resolve_d)
# should have reset to the sentinel context
self.assertIs(LoggingContext.current_context(), LoggingContext.sentinel)
result = yield resolve_d
# should have restored our context
self.assertIs(LoggingContext.current_context(), ctx)
defer.returnValue(result)
def stop(self, clock, request):
context = LoggingContext.current_context()
tag = ""
if context:
tag = context.tag
if context != self.start_context:
logger.warn(
"Context have unexpectedly changed %r, %r",
context, self.start_context
)
return
incoming_requests_counter.inc(request.method, self.name, tag)
response_timer.inc_by(
clock.time_msec() - self.start, request.method,
self.name, tag
)
ru_utime, ru_stime = context.get_resource_usage()
response_ru_utime.inc_by(
ru_utime, request.method, self.name, tag
)
response_ru_stime.inc_by(
ru_stime, request.method, self.name, tag
)
response_db_txn_count.inc_by(
context.db_txn_count, request.method, self.name, tag
)
response_db_txn_duration.inc_by(
context.db_txn_duration, request.method, self.name, tag
)
def _wait_for_sync_for_user(self, sync_config, since_token, timeout,
full_state):
context = LoggingContext.current_context()
if context:
if since_token is None:
context.tag = "initial_sync"
elif full_state:
context.tag = "full_state_sync"
else:
context.tag = "incremental_sync"
if timeout == 0 or since_token is None or full_state:
# we are going to return immediately, so don't bother calling
# notifier.wait_for_events.
result = yield self.current_sync_for_user(
sync_config, since_token, full_state=full_state,
)
defer.returnValue(result)
else:
def current_sync_callback(before_token, after_token):
return self.current_sync_for_user(sync_config, since_token)
result = yield self.notifier.wait_for_events(
sync_config.user.to_string(), timeout, current_sync_callback,
from_token=since_token,
)
defer.returnValue(result)
def call_later(self, delay, callback):
current_context = LoggingContext.current_context()
def wrapped_callback():
LoggingContext.thread_local.current_context = current_context
callback()
return reactor.callLater(delay, wrapped_callback)
def get_perspectives(**kwargs):
self.assertEquals(
LoggingContext.current_context().request, "11",
)
with logcontext.PreserveLoggingContext():
yield persp_deferred
defer.returnValue(persp_resp)
def with_logging_context(fn):
context = LoggingContext.current_context()
def restore_context_callback(x):
with PreserveLoggingContext(context):
return fn(x)
return restore_context_callback
def test_logcontexts_with_async_result(self):
@defer.inlineCallbacks
def cb():
yield Clock(reactor).sleep(0)
defer.returnValue("yay")
@defer.inlineCallbacks
def test():
with LoggingContext("c") as c1:
res = yield self.cache.fetch_or_execute(self.mock_key, cb)
self.assertIs(LoggingContext.current_context(), c1)
self.assertEqual(res, "yay")
# run the test twice in parallel
d = defer.gatherResults([test(), test()])
self.assertIs(LoggingContext.current_context(), LoggingContext.sentinel)
yield d
self.assertIs(LoggingContext.current_context(), LoggingContext.sentinel)
def with_logging_context(fn):
context = LoggingContext.current_context()
def restore_context_callback(x):
with PreserveLoggingContext():
LoggingContext.thread_local.current_context = context
return fn(x)
return restore_context_callback
def call_later(self, delay, callback, *args, **kwargs):
current_context = LoggingContext.current_context()
def wrapped_callback(*args, **kwargs):
with PreserveLoggingContext():
LoggingContext.thread_local.current_context = current_context
callback(*args, **kwargs)
with PreserveLoggingContext():
return reactor.callLater(delay, wrapped_callback, *args, **kwargs)
def test_wait_for_previous_lookups(self):
sentinel_context = LoggingContext.current_context()
kr = keyring.Keyring(self.hs)
lookup_1_deferred = defer.Deferred()
lookup_2_deferred = defer.Deferred()
with LoggingContext("one") as context_one:
context_one.request = "one"
wait_1_deferred = kr.wait_for_previous_lookups(
["server1"],
{"server1": lookup_1_deferred},
)
# there were no previous lookups, so the deferred should be ready
self.assertTrue(wait_1_deferred.called)
# ... so we should have preserved the LoggingContext.
self.assertIs(LoggingContext.current_context(), context_one)
wait_1_deferred.addBoth(self.check_context, "one")
with LoggingContext("two") as context_two:
context_two.request = "two"
# set off another wait. It should block because the first lookup
# hasn't yet completed.
wait_2_deferred = kr.wait_for_previous_lookups(
["server1"],
{"server1": lookup_2_deferred},
)
self.assertFalse(wait_2_deferred.called)
# ... so we should have reset the LoggingContext.
self.assertIs(LoggingContext.current_context(), sentinel_context)
wait_2_deferred.addBoth(self.check_context, "two")
# let the first lookup complete (in the sentinel context)
lookup_1_deferred.callback(None)
# now the second wait should complete and restore our
# loggingcontext.
yield wait_2_deferred
def test_wait_for_previous_lookups(self):
sentinel_context = LoggingContext.current_context()
kr = keyring.Keyring(self.hs)
lookup_1_deferred = defer.Deferred()
lookup_2_deferred = defer.Deferred()
with LoggingContext("one") as context_one:
context_one.request = "one"
wait_1_deferred = kr.wait_for_previous_lookups(
["server1"],
{"server1": lookup_1_deferred},
)
# there were no previous lookups, so the deferred should be ready
self.assertTrue(wait_1_deferred.called)
# ... so we should have preserved the LoggingContext.
self.assertIs(LoggingContext.current_context(), context_one)
wait_1_deferred.addBoth(self.check_context, "one")
with LoggingContext("two") as context_two:
context_two.request = "two"
# set off another wait. It should block because the first lookup
# hasn't yet completed.
wait_2_deferred = kr.wait_for_previous_lookups(
["server1"],
{"server1": lookup_2_deferred},
)
self.assertFalse(wait_2_deferred.called)
# ... so we should have reset the LoggingContext.
self.assertIs(LoggingContext.current_context(), sentinel_context)
wait_2_deferred.addBoth(self.check_context, "two")
# let the first lookup complete (in the sentinel context)
lookup_1_deferred.callback(None)
# now the second wait should complete and restore our
# loggingcontext.
yield wait_2_deferred
def start(self, time_sec, name, method):
self.start = time_sec
self.start_context = LoggingContext.current_context()
self.name = name
self.method = method
# _request_stats records resource usage that we have already added
# to the "in flight" metrics.
self._request_stats = self.start_context.get_resource_usage()
_in_flight_requests.add(self)
def inner_func(conn, *args, **kwargs):
with LoggingContext("runInteraction") as context:
sql_scheduling_timer.inc_by(time.time() * 1000 - start_time)
if self.database_engine.is_connection_closed(conn):
logger.debug("Reconnecting closed database connection")
conn.reconnect()
current_context.copy_to(context)
return self._new_transaction(conn, desc, after_callbacks, func,
*args, **kwargs)
def inner_func(conn, *args, **kwargs):
with LoggingContext("runWithConnection") as context:
sql_scheduling_timer.inc_by(time.time() * 1000 - start_time)
if self.database_engine.is_connection_closed(conn):
logger.debug("Reconnecting closed database connection")
conn.reconnect()
current_context.copy_to(context)
return func(conn, *args, **kwargs)
def wrapped_request_handler(self, request):
global _next_request_id
request_id = "%s-%s" % (request.method, _next_request_id)
_next_request_id += 1
with LoggingContext(request_id) as request_context:
if report_metrics:
request_metrics = RequestMetrics()
request_metrics.start(self.clock)
request_context.request = request_id
with request.processing():
try:
with PreserveLoggingContext(request_context):
yield request_handler(self, request)
except CodeMessageException as e:
code = e.code
if isinstance(e, SynapseError):
logger.info(
"%s SynapseError: %s - %s", request, code, e.msg
)
else:
logger.exception(e)
outgoing_responses_counter.inc(request.method, str(code))
respond_with_json(
request, code, cs_exception(e), send_cors=True,
pretty_print=_request_user_agent_is_curl(request),
version_string=self.version_string,
)
except:
logger.exception(
"Failed handle request %s.%s on %r: %r",
request_handler.__module__,
request_handler.__name__,
self,
request
)
respond_with_json(
request,
500,
{
"error": "Internal server error",
"errcode": Codes.UNKNOWN,
},
send_cors=True
)
finally:
try:
if report_metrics:
request_metrics.stop(
self.clock, request, self.__class__.__name__
)
except:
pass
def _get_events(self, event_ids, check_redacted=True,
get_prev_content=False, allow_rejected=False):
if not event_ids:
defer.returnValue([])
event_id_list = event_ids
event_ids = set(event_ids)
event_entry_map = self._get_events_from_cache(
event_ids,
allow_rejected=allow_rejected,
)
missing_events_ids = [e for e in event_ids if e not in event_entry_map]
if missing_events_ids:
log_ctx = LoggingContext.current_context()
log_ctx.record_event_fetch(len(missing_events_ids))
missing_events = yield self._enqueue_events(
missing_events_ids,
check_redacted=check_redacted,
allow_rejected=allow_rejected,
)
event_entry_map.update(missing_events)
events = []
for event_id in event_id_list:
entry = event_entry_map.get(event_id, None)
if not entry:
continue
if allow_rejected or not entry.event.rejected_reason:
if check_redacted and entry.redacted_event:
event = entry.redacted_event
else:
event = entry.event
events.append(event)
if get_prev_content:
if "replaces_state" in event.unsigned:
prev = yield self.get_event(
event.unsigned["replaces_state"],
get_prev_content=False,
allow_none=True,
)
if prev:
event.unsigned = dict(event.unsigned)
event.unsigned["prev_content"] = prev.content
event.unsigned["prev_sender"] = prev.sender
defer.returnValue(events)
def call_later(self, delay, callback, *args, **kwargs):
current_context = LoggingContext.current_context()
def wrapped_callback():
LoggingContext.thread_local.current_context = current_context
callback(*args, **kwargs)
t = [self.now + delay, wrapped_callback, False]
self.timers.append(t)
return t
def call_later(self, delay, callback, *args, **kwargs):
current_context = LoggingContext.current_context()
def wrapped_callback():
LoggingContext.thread_local.current_context = current_context
callback(*args, **kwargs)
t = [self.now + delay, wrapped_callback, False]
self.timers.append(t)
return t
def on_new_receipts(self, min_stream_id, max_stream_id):
# Note that the min here shouldn't be relied upon to be accurate.
# We could check the receipts are actually m.read receipts here,
# but currently that's the only type of receipt anyway...
with LoggingContext("push.on_new_receipts"):
with Measure(self.clock, "push.on_new_receipts"):
badge = yield push_tools.get_badge_count(
self.hs.get_datastore(), self.user_id
)
yield self._send_badge(badge)
def _get_events(self, event_ids, check_redacted=True,
get_prev_content=False, allow_rejected=False):
if not event_ids:
defer.returnValue([])
event_id_list = event_ids
event_ids = set(event_ids)
event_entry_map = self._get_events_from_cache(
event_ids,
allow_rejected=allow_rejected,
)
missing_events_ids = [e for e in event_ids if e not in event_entry_map]
if missing_events_ids:
log_ctx = LoggingContext.current_context()
log_ctx.record_event_fetch(len(missing_events_ids))
missing_events = yield self._enqueue_events(
missing_events_ids,
check_redacted=check_redacted,
allow_rejected=allow_rejected,
)
event_entry_map.update(missing_events)
events = []
for event_id in event_id_list:
entry = event_entry_map.get(event_id, None)
if not entry:
continue
if allow_rejected or not entry.event.rejected_reason:
if check_redacted and entry.redacted_event:
event = entry.redacted_event
else:
event = entry.event
events.append(event)
if get_prev_content:
if "replaces_state" in event.unsigned:
prev = yield self.get_event(
event.unsigned["replaces_state"],
get_prev_content=False,
allow_none=True,
)
if prev:
event.unsigned = dict(event.unsigned)
event.unsigned["prev_content"] = prev.content
event.unsigned["prev_sender"] = prev.sender
defer.returnValue(events)
def test_logcontexts_with_async_result(self):
@defer.inlineCallbacks
def cb():
yield Clock(reactor).sleep(0)
defer.returnValue("yay")
@defer.inlineCallbacks
def test():
with LoggingContext("c") as c1:
res = yield self.cache.fetch_or_execute(self.mock_key, cb)
self.assertIs(LoggingContext.current_context(), c1)
self.assertEqual(res, "yay")
# run the test twice in parallel
d = defer.gatherResults([test(), test()])
self.assertIs(LoggingContext.current_context(),
LoggingContext.sentinel)
yield d
self.assertIs(LoggingContext.current_context(),
LoggingContext.sentinel)
def inner_func(conn, *args, **kwargs):
with LoggingContext("runWithConnection", parent_context) as context:
sched_duration_sec = time.time() - start_time
sql_scheduling_timer.observe(sched_duration_sec)
context.add_database_scheduled(sched_duration_sec)
if self.database_engine.is_connection_closed(conn):
logger.debug("Reconnecting closed database connection")
conn.reconnect()
return func(conn, *args, **kwargs)
def _test_run_in_background(self, function):
sentinel_context = LoggingContext.current_context()
callback_completed = [False]
with LoggingContext() as context_one:
context_one.request = "one"
# fire off function, but don't wait on it.
d2 = logcontext.run_in_background(function)
def cb(res):
callback_completed[0] = True
return res
d2.addCallback(cb)
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_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")
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")
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())
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_logcontext_is_preserved_on_cancellation(self):
blocking_was_cancelled = [False]
@defer.inlineCallbacks
def blocking():
non_completing_d = Deferred()
with logcontext.PreserveLoggingContext():
try:
yield non_completing_d
except CancelledError:
blocking_was_cancelled[0] = True
raise
with logcontext.LoggingContext("one") as context_one:
# the errbacks should be run in the test logcontext
def errback(res, deferred_name):
self.assertIs(
LoggingContext.current_context(), context_one,
"errback %s run in unexpected logcontext %s" % (
deferred_name, LoggingContext.current_context(),
)
)
return res
original_deferred = blocking()
original_deferred.addErrback(errback, "orig")
timing_out_d = timeout_deferred(original_deferred, 1.0, self.clock)
self.assertNoResult(timing_out_d)
self.assertIs(LoggingContext.current_context(), LoggingContext.sentinel)
timing_out_d.addErrback(errback, "timingout")
self.clock.pump((1.0, ))
self.assertTrue(
blocking_was_cancelled[0],
"non-completing deferred was not cancelled",
)
self.failureResultOf(timing_out_d, defer.TimeoutError, )
self.assertIs(LoggingContext.current_context(), context_one)
def wrapped_request_handler(self, request):
global _next_request_id
request_id = "%s-%s" % (request.method, _next_request_id)
_next_request_id += 1
with LoggingContext(request_id) as request_context:
request_context.request = request_id
code = None
start = self.clock.time_msec()
try:
logger.info(
"Received request: %s %s",
request.method, request.path
)
yield request_handler(self, request)
code = request.code
except CodeMessageException as e:
code = e.code
if isinstance(e, SynapseError):
logger.info(
"%s SynapseError: %s - %s", request, code, e.msg
)
else:
logger.exception(e)
outgoing_responses_counter.inc(request.method, str(code))
respond_with_json(
request, code, cs_exception(e), send_cors=True,
pretty_print=_request_user_agent_is_curl(request),
version_string=self.version_string,
)
except:
code = 500
logger.exception(
"Failed handle request %s.%s on %r: %r",
request_handler.__module__,
request_handler.__name__,
self,
request
)
respond_with_json(
request,
500,
{"error": "Internal server error"},
send_cors=True
)
finally:
code = str(code) if code else "-"
end = self.clock.time_msec()
logger.info(
"Processed request: %dms %s %s %s",
end-start, code, request.method, request.path
)
def _finished_processing(self):
try:
context = LoggingContext.current_context()
usage = context.get_resource_usage()
except Exception:
usage = ContextResourceUsage()
end_time = time.time()
# need to decode as it could be raw utf-8 bytes
# from a IDN servname in an auth header
authenticated_entity = self.authenticated_entity
if authenticated_entity is not None:
authenticated_entity = authenticated_entity.decode(
"utf-8", "replace")
# ...or could be raw utf-8 bytes in the User-Agent header.
# N.B. if you don't do this, the logger explodes cryptically
# with maximum recursion trying to log errors about
# the charset problem.
# c.f. https://github.com/matrix-org/synapse/issues/3471
user_agent = self.get_user_agent()
if user_agent is not None:
user_agent = user_agent.decode("utf-8", "replace")
self.site.access_logger.info(
"%s - %s - {%s}"
" Processed request: %.3fsec (%.3fsec, %.3fsec) (%.3fsec/%.3fsec/%d)"
" %sB %s \"%s %s %s\" \"%s\" [%d dbevts]",
self.getClientIP(),
self.site.site_tag,
authenticated_entity,
end_time - self.start_time,
usage.ru_utime,
usage.ru_stime,
usage.db_sched_duration_sec,
usage.db_txn_duration_sec,
int(usage.db_txn_count),
self.sentLength,
self.code,
self.method,
self.get_redacted_uri(),
self.clientproto,
user_agent,
usage.evt_db_fetch_count,
)
try:
self.request_metrics.stop(end_time, self)
except Exception as e:
logger.warn("Failed to stop metrics: %r", e)
def test_logcontext_is_preserved_on_cancellation(self):
blocking_was_cancelled = [False]
@defer.inlineCallbacks
def blocking():
non_completing_d = Deferred()
with logcontext.PreserveLoggingContext():
try:
yield non_completing_d
except CancelledError:
blocking_was_cancelled[0] = True
raise
with logcontext.LoggingContext("one") as context_one:
# the errbacks should be run in the test logcontext
def errback(res, deferred_name):
self.assertIs(
LoggingContext.current_context(),
context_one,
"errback %s run in unexpected logcontext %s"
% (deferred_name, LoggingContext.current_context()),
)
return res
original_deferred = blocking()
original_deferred.addErrback(errback, "orig")
timing_out_d = timeout_deferred(original_deferred, 1.0, self.clock)
self.assertNoResult(timing_out_d)
self.assertIs(LoggingContext.current_context(), LoggingContext.sentinel)
timing_out_d.addErrback(errback, "timingout")
self.clock.pump((1.0,))
self.assertTrue(
blocking_was_cancelled[0], "non-completing deferred was not cancelled"
)
self.failureResultOf(timing_out_d, defer.TimeoutError)
self.assertIs(LoggingContext.current_context(), context_one)
def run():
count = _background_process_counts.get(desc, 0)
_background_process_counts[desc] = count + 1
_background_process_start_count.labels(desc).inc()
with LoggingContext(desc) as context:
context.request = "%s-%i" % (desc, count)
proc = _BackgroundProcess(desc, context)
_background_processes.setdefault(desc, set()).add(proc)
try:
yield func(*args, **kwargs)
finally:
proc.update_metrics()
_background_processes[desc].remove(proc)
def setUp(orig):
# enable debugging of delayed calls - this means that we get a
# traceback when a unit test exits leaving things on the reactor.
twisted.internet.base.DelayedCall.debug = True
# if we're not starting in the sentinel logcontext, then to be honest
# all future bets are off.
if LoggingContext.current_context() is not LoggingContext.sentinel:
self.fail(
"Test starting with non-sentinel logging context %s" %
(LoggingContext.current_context(), ))
old_level = logging.getLogger().level
if old_level != level:
@around(self)
def tearDown(orig):
ret = orig()
logging.getLogger().setLevel(old_level)
return ret
logging.getLogger().setLevel(level)
return orig()
def test_sleep(self):
@defer.inlineCallbacks
def competing_callback():
with LoggingContext() as competing_context:
competing_context.test_key = "competing"
yield sleep(0)
self._check_test_key("competing")
reactor.callLater(0, competing_callback)
with LoggingContext() as context_one:
context_one.test_key = "one"
yield sleep(0)
self._check_test_key("one")
def wrapped(*args, **kwargs):
start_context = LoggingContext.current_context()
try:
res = orig(*args, **kwargs)
except Exception:
if LoggingContext.current_context() != start_context:
err = "%s changed context from %s to %s on exception" % (
f,
start_context,
LoggingContext.current_context(),
)
print(err, file=sys.stderr)
raise Exception(err)
raise
if not isinstance(res, Deferred) or res.called:
if LoggingContext.current_context() != start_context:
err = "%s changed context from %s to %s" % (
f,
start_context,
LoggingContext.current_context(),
)
# print the error to stderr because otherwise all we
# see in travis-ci is the 500 error
print(err, file=sys.stderr)
raise Exception(err)
return res
if LoggingContext.current_context() != LoggingContext.sentinel:
err = (
"%s returned incomplete deferred in non-sentinel context "
"%s (start was %s)") % (
f, LoggingContext.current_context(), start_context)
print(err, file=sys.stderr)
raise Exception(err)
def check_ctx(r):
if LoggingContext.current_context() != start_context:
err = "%s completion of %s changed context from %s to %s" % (
"Failure" if isinstance(r, Failure) else "Success",
f,
start_context,
LoggingContext.current_context(),
)
print(err, file=sys.stderr)
raise Exception(err)
return r
res.addBoth(check_ctx)
return res
def test_does_not_cache_failures(self):
"""Checks that, if the callback returns a failure, it is called again
for the next request.
"""
called = [False]
def cb():
if called[0]:
# return a valid result the second time
return defer.succeed(self.mock_http_response)
called[0] = True
return defer.fail(Exception("boo"))
with LoggingContext("test") as test_context:
try:
yield self.cache.fetch_or_execute(self.mock_key, cb)
except Exception as e:
self.assertEqual(e.message, "boo")
self.assertIs(LoggingContext.current_context(), test_context)
res = yield self.cache.fetch_or_execute(self.mock_key, cb)
self.assertEqual(res, self.mock_http_response)
self.assertIs(LoggingContext.current_context(), test_context)
def second_lookup():
with LoggingContext("12") as context_12:
context_12.request = "12"
self.http_client.post_json.reset_mock()
self.http_client.post_json.return_value = defer.Deferred()
res_deferreds_2 = kr.verify_json_objects_for_server([
("server10", json1)
])
res_deferreds_2[0].addBoth(self.check_context, None)
yield logcontext.make_deferred_yieldable(res_deferreds_2[0])
# let verify_json_objects_for_server finish its work before we kill the
# logcontext
yield self.clock.sleep(0)
def do_request():
with LoggingContext("one") as context:
fetch_d = self.cl.get_json("testserv:8008", "foo/bar")
# Nothing happened yet
self.assertNoResult(fetch_d)
# should have reset logcontext to the sentinel
check_logcontext(LoggingContext.sentinel)
try:
fetch_res = yield fetch_d
defer.returnValue(fetch_res)
finally:
check_logcontext(context)
def stop(self, time_sec, request):
_in_flight_requests.discard(self)
context = LoggingContext.current_context()
tag = ""
if context:
tag = context.tag
if context != self.start_context:
logger.warn(
"Context have unexpectedly changed %r, %r",
context, self.start_context
)
return
outgoing_responses_counter.labels(request.method, str(request.code)).inc()
response_count.labels(request.method, self.name, tag).inc()
response_timer.labels(request.method, self.name, tag).observe(
time_sec - self.start
)
resource_usage = context.get_resource_usage()
response_ru_utime.labels(request.method, self.name, tag).inc(
resource_usage.ru_utime,
)
response_ru_stime.labels(request.method, self.name, tag).inc(
resource_usage.ru_stime,
)
response_db_txn_count.labels(request.method, self.name, tag).inc(
resource_usage.db_txn_count
)
response_db_txn_duration.labels(request.method, self.name, tag).inc(
resource_usage.db_txn_duration_sec
)
response_db_sched_duration.labels(request.method, self.name, tag).inc(
resource_usage.db_sched_duration_sec
)
response_size.labels(request.method, self.name, tag).inc(request.sentLength)
# We always call this at the end to ensure that we update the metrics
# regardless of whether a call to /metrics while the request was in
# flight.
self.update_metrics()
def call_later(self, delay, callback, *args, **kwargs):
"""Call something later
Args:
delay(float): How long to wait in seconds.
callback(function): Function to call
*args: Postional arguments to pass to function.
**kwargs: Key arguments to pass to function.
"""
current_context = LoggingContext.current_context()
def wrapped_callback(*args, **kwargs):
with PreserveLoggingContext(current_context):
callback(*args, **kwargs)
with PreserveLoggingContext():
return reactor.callLater(delay, wrapped_callback, *args, **kwargs)
def wait_for_previous_lookups(self, server_names, server_to_deferred):
"""Waits for any previous key lookups for the given servers to finish.
Args:
server_names (list): list of server_names we want to lookup
server_to_deferred (dict): server_name to deferred which gets
resolved once we've finished looking up keys for that server.
The Deferreds should be regular twisted ones which call their
callbacks with no logcontext.
Returns: a Deferred which resolves once all key lookups for the given
servers have completed. Follows the synapse rules of logcontext
preservation.
"""
loop_count = 1
while True:
wait_on = [
(server_name, self.key_downloads[server_name])
for server_name in server_names
if server_name in self.key_downloads
]
if not wait_on:
break
logger.info(
"Waiting for existing lookups for %s to complete [loop %i]",
[w[0] for w in wait_on], loop_count,
)
with PreserveLoggingContext():
yield defer.DeferredList((w[1] for w in wait_on))
loop_count += 1
ctx = LoggingContext.current_context()
def rm(r, server_name_):
with PreserveLoggingContext(ctx):
logger.debug("Releasing key lookup lock on %s", server_name_)
self.key_downloads.pop(server_name_, None)
return r
for server_name, deferred in server_to_deferred.items():
logger.debug("Got key lookup lock on %s", server_name)
self.key_downloads[server_name] = deferred
deferred.addBoth(rm, server_name)
def stop(self, time_msec, request):
context = LoggingContext.current_context()
tag = ""
if context:
tag = context.tag
if context != self.start_context:
logger.warn(
"Context have unexpectedly changed %r, %r",
context, self.start_context
)
return
outgoing_responses_counter.inc(request.method, str(request.code))
response_count.inc(request.method, self.name, tag)
response_timer.inc_by(
time_msec - self.start, request.method,
self.name, tag
)
ru_utime, ru_stime = context.get_resource_usage()
response_ru_utime.inc_by(
ru_utime, request.method, self.name, tag
)
response_ru_stime.inc_by(
ru_stime, request.method, self.name, tag
)
response_db_txn_count.inc_by(
context.db_txn_count, request.method, self.name, tag
)
response_db_txn_duration.inc_by(
context.db_txn_duration_ms / 1000., request.method, self.name, tag
)
response_db_sched_duration.inc_by(
context.db_sched_duration_ms / 1000., request.method, self.name, tag
)
response_size.inc_by(request.sentLength, request.method, self.name, tag)
def __exit__(self, exc_type, exc_val, exc_tb):
if isinstance(exc_type, Exception) or not self.start_context:
return
in_flight.unregister((self.name, ), self._update_in_flight)
duration = self.clock.time() - self.start
block_counter.labels(self.name).inc()
block_timer.labels(self.name).inc(duration)
context = LoggingContext.current_context()
if context != self.start_context:
logger.warn(
"Context has unexpectedly changed from '%s' to '%s'. (%r)",
self.start_context,
context,
self.name,
)
return
if not context:
logger.warn("Expected context. (%r)", self.name)
return
current = context.get_resource_usage()
usage = current - self.start_usage
try:
block_ru_utime.labels(self.name).inc(usage.ru_utime)
block_ru_stime.labels(self.name).inc(usage.ru_stime)
block_db_txn_count.labels(self.name).inc(usage.db_txn_count)
block_db_txn_duration.labels(self.name).inc(
usage.db_txn_duration_sec)
block_db_sched_duration.labels(self.name).inc(
usage.db_sched_duration_sec)
except ValueError:
logger.warn("Failed to save metrics! OLD: %r, NEW: %r",
self.start_usage, current)
if self.created_context:
self.start_context.__exit__(exc_type, exc_val, exc_tb)
def wait_for_sync_for_user(self,
sync_config,
since_token=None,
timeout=0,
full_state=False):
"""Get the sync for a client if we have new data for it now. Otherwise
wait for new data to arrive on the server. If the timeout expires, then
return an empty sync result.
Returns:
A Deferred SyncResult.
"""
context = LoggingContext.current_context()
if context:
if since_token is None:
context.tag = "initial_sync"
elif full_state:
context.tag = "full_state_sync"
else:
context.tag = "incremental_sync"
if timeout == 0 or since_token is None or full_state:
# we are going to return immediately, so don't bother calling
# notifier.wait_for_events.
result = yield self.current_sync_for_user(
sync_config,
since_token,
full_state=full_state,
)
defer.returnValue(result)
else:
def current_sync_callback(before_token, after_token):
return self.current_sync_for_user(sync_config, since_token)
result = yield self.notifier.wait_for_events(
sync_config.user.to_string(),
timeout,
current_sync_callback,
from_token=since_token,
)
defer.returnValue(result)
