diff options
Diffstat (limited to 'synapse')
| -rw-r--r-- | synapse/handlers/federation.py | 164 | ||||
| -rw-r--r-- | synapse/http/client.py | 4 | ||||
| -rw-r--r-- | synapse/http/matrixfederationclient.py | 25 | ||||
| -rw-r--r-- | synapse/http/site.py | 4 | ||||
| -rw-r--r-- | synapse/notifier.py | 21 | ||||
| -rw-r--r-- | synapse/util/async_helpers.py | 88 | ||||
| -rw-r--r-- | synapse/util/retryutils.py | 2 |
7 files changed, 163 insertions, 145 deletions
diff --git a/synapse/handlers/federation.py b/synapse/handlers/federation.py index f10b46414b..8d6bd7976d 100644 --- a/synapse/handlers/federation.py +++ b/synapse/handlers/federation.py @@ -69,6 +69,27 @@ from ._base import BaseHandler logger = logging.getLogger(__name__) +def shortstr(iterable, maxitems=5): + """If iterable has maxitems or fewer, return the stringification of a list + containing those items. + + Otherwise, return the stringification of a a list with the first maxitems items, + followed by "...". + + Args: + iterable (Iterable): iterable to truncate + maxitems (int): number of items to return before truncating + + Returns: + unicode + """ + + items = list(itertools.islice(iterable, maxitems + 1)) + if len(items) <= maxitems: + return str(items) + return u"[" + u", ".join(repr(r) for r in items[:maxitems]) + u", ...]" + + class FederationHandler(BaseHandler): """Handles events that originated from federation. Responsible for: @@ -114,7 +135,6 @@ class FederationHandler(BaseHandler): self._room_pdu_linearizer = Linearizer("fed_room_pdu") @defer.inlineCallbacks - @log_function def on_receive_pdu( self, origin, pdu, get_missing=True, sent_to_us_directly=False, ): @@ -130,9 +150,17 @@ class FederationHandler(BaseHandler): Returns (Deferred): completes with None """ + room_id = pdu.room_id + event_id = pdu.event_id + + logger.info( + "[%s %s] handling received PDU: %s", + room_id, event_id, pdu, + ) + # We reprocess pdus when we have seen them only as outliers existing = yield self.store.get_event( - pdu.event_id, + event_id, allow_none=True, allow_rejected=True, ) @@ -147,7 +175,7 @@ class FederationHandler(BaseHandler): ) ) if already_seen: - logger.debug("Already seen pdu %s", pdu.event_id) + logger.debug("[%s %s]: Already seen pdu", room_id, event_id) return # do some initial sanity-checking of the event. In particular, make @@ -156,6 +184,7 @@ class FederationHandler(BaseHandler): try: self._sanity_check_event(pdu) except SynapseError as err: + logger.warn("[%s %s] Received event failed sanity checks", room_id, event_id) raise FederationError( "ERROR", err.code, @@ -165,10 +194,12 @@ class FederationHandler(BaseHandler): # If we are currently in the process of joining this room, then we # queue up events for later processing. - if pdu.room_id in self.room_queues: - logger.info("Ignoring PDU %s for room %s from %s for now; join " - "in progress", pdu.event_id, pdu.room_id, origin) - self.room_queues[pdu.room_id].append((pdu, origin)) + if room_id in self.room_queues: + logger.info( + "[%s %s] Queuing PDU from %s for now: join in progress", + room_id, event_id, origin, + ) + self.room_queues[room_id].append((pdu, origin)) return # If we're no longer in the room just ditch the event entirely. This @@ -179,7 +210,7 @@ class FederationHandler(BaseHandler): # we should check if we *are* in fact in the room. If we are then we # can magically rejoin the room. is_in_room = yield self.auth.check_host_in_room( - pdu.room_id, + room_id, self.server_name ) if not is_in_room: @@ -188,8 +219,8 @@ class FederationHandler(BaseHandler): ) if was_in_room: logger.info( - "Ignoring PDU %s for room %s from %s as we've left the room!", - pdu.event_id, pdu.room_id, origin, + "[%s %s] Ignoring PDU from %s as we've left the room", + room_id, event_id, origin, ) defer.returnValue(None) @@ -204,8 +235,8 @@ class FederationHandler(BaseHandler): ) logger.debug( - "_handle_new_pdu min_depth for %s: %d", - pdu.room_id, min_depth + "[%s %s] min_depth: %d", + room_id, event_id, min_depth, ) prevs = {e_id for e_id, _ in pdu.prev_events} @@ -218,17 +249,18 @@ class FederationHandler(BaseHandler): # send to the clients. pdu.internal_metadata.outlier = True elif min_depth and pdu.depth > min_depth: - if get_missing and prevs - seen: + missing_prevs = prevs - seen + if get_missing and missing_prevs: # If we're missing stuff, ensure we only fetch stuff one # at a time. logger.info( - "Acquiring lock for room %r to fetch %d missing events: %r...", - pdu.room_id, len(prevs - seen), list(prevs - seen)[:5], + "[%s %s] Acquiring room lock to fetch %d missing prev_events: %s", + room_id, event_id, len(missing_prevs), shortstr(missing_prevs), ) with (yield self._room_pdu_linearizer.queue(pdu.room_id)): logger.info( - "Acquired lock for room %r to fetch %d missing events", - pdu.room_id, len(prevs - seen), + "[%s %s] Acquired room lock to fetch %d missing prev_events", + room_id, event_id, len(missing_prevs), ) yield self._get_missing_events_for_pdu( @@ -241,19 +273,23 @@ class FederationHandler(BaseHandler): if not prevs - seen: logger.info( - "Found all missing prev events for %s", pdu.event_id + "[%s %s] Found all missing prev_events", + room_id, event_id, ) - elif prevs - seen: + elif missing_prevs: logger.info( - "Not fetching %d missing events for room %r,event %s: %r...", - len(prevs - seen), pdu.room_id, pdu.event_id, - list(prevs - seen)[:5], + "[%s %s] Not recursively fetching %d missing prev_events: %s", + room_id, event_id, len(missing_prevs), shortstr(missing_prevs), ) if sent_to_us_directly and prevs - seen: # If they have sent it to us directly, and the server # isn't telling us about the auth events that it's # made a message referencing, we explode + logger.warn( + "[%s %s] Failed to fetch %d prev events: rejecting", + room_id, event_id, len(prevs - seen), + ) raise FederationError( "ERROR", 403, @@ -270,15 +306,19 @@ class FederationHandler(BaseHandler): auth_chains = set() try: # Get the state of the events we know about - ours = yield self.store.get_state_groups(pdu.room_id, list(seen)) + ours = yield self.store.get_state_groups(room_id, list(seen)) state_groups.append(ours) # Ask the remote server for the states we don't # know about for p in prevs - seen: + logger.info( + "[%s %s] Requesting state at missing prev_event %s", + room_id, event_id, p, + ) state, got_auth_chain = ( yield self.federation_client.get_state_for_room( - origin, pdu.room_id, p + origin, room_id, p, ) ) auth_chains.update(got_auth_chain) @@ -291,19 +331,24 @@ class FederationHandler(BaseHandler): ev_ids, get_prev_content=False, check_redacted=False ) - room_version = yield self.store.get_room_version(pdu.room_id) + room_version = yield self.store.get_room_version(room_id) state_map = yield resolve_events_with_factory( - room_version, state_groups, {pdu.event_id: pdu}, fetch + room_version, state_groups, {event_id: pdu}, fetch ) state = (yield self.store.get_events(state_map.values())).values() auth_chain = list(auth_chains) except Exception: + logger.warn( + "[%s %s] Error attempting to resolve state at missing " + "prev_events", + room_id, event_id, exc_info=True, + ) raise FederationError( "ERROR", 403, "We can't get valid state history.", - affected=pdu.event_id, + affected=event_id, ) yield self._process_received_pdu( @@ -322,15 +367,16 @@ class FederationHandler(BaseHandler): prevs (set(str)): List of event ids which we are missing min_depth (int): Minimum depth of events to return. """ - # We recalculate seen, since it may have changed. + + room_id = pdu.room_id + event_id = pdu.event_id + seen = yield self.store.have_seen_events(prevs) if not prevs - seen: return - latest = yield self.store.get_latest_event_ids_in_room( - pdu.room_id - ) + latest = yield self.store.get_latest_event_ids_in_room(room_id) # We add the prev events that we have seen to the latest # list to ensure the remote server doesn't give them to us @@ -338,8 +384,8 @@ class FederationHandler(BaseHandler): latest |= seen logger.info( - "Missing %d events for room %r pdu %s: %r...", - len(prevs - seen), pdu.room_id, pdu.event_id, list(prevs - seen)[:5] + "[%s %s]: Requesting %d prev_events: %s", + room_id, event_id, len(prevs - seen), shortstr(prevs - seen) ) # XXX: we set timeout to 10s to help workaround @@ -392,7 +438,7 @@ class FederationHandler(BaseHandler): missing_events = yield self.federation_client.get_missing_events( origin, - pdu.room_id, + room_id, earliest_events_ids=list(latest), latest_events=[pdu], limit=10, @@ -401,37 +447,46 @@ class FederationHandler(BaseHandler): ) logger.info( - "Got %d events: %r...", - len(missing_events), [e.event_id for e in missing_events[:5]] + "[%s %s]: Got %d prev_events: %s", + room_id, event_id, len(missing_events), shortstr(missing_events), ) # We want to sort these by depth so we process them and # tell clients about them in order. missing_events.sort(key=lambda x: x.depth) - for e in missing_events: - logger.info("Handling found event %s", e.event_id) + for ev in missing_events: + logger.info( + "[%s %s] Handling received prev_event %s", + room_id, event_id, ev.event_id, + ) try: yield self.on_receive_pdu( origin, - e, + ev, get_missing=False ) except FederationError as e: if e.code == 403: - logger.warn("Event %s failed history check.") + logger.warn( + "[%s %s] Received prev_event %s failed history check.", + room_id, event_id, ev.event_id, + ) else: raise - @log_function @defer.inlineCallbacks - def _process_received_pdu(self, origin, pdu, state, auth_chain): + def _process_received_pdu(self, origin, event, state, auth_chain): """ Called when we have a new pdu. We need to do auth checks and put it through the StateHandler. """ - event = pdu + room_id = event.room_id + event_id = event.event_id - logger.debug("Processing event: %s", event) + logger.debug( + "[%s %s] Processing event: %s", + room_id, event_id, event, + ) # FIXME (erikj): Awful hack to make the case where we are not currently # in the room work @@ -440,15 +495,16 @@ class FederationHandler(BaseHandler): # event. if state and auth_chain and not event.internal_metadata.is_outlier(): is_in_room = yield self.auth.check_host_in_room( - event.room_id, + room_id, self.server_name ) else: is_in_room = True + if not is_in_room: logger.info( - "Got event for room we're not in: %r %r", - event.room_id, event.event_id + "[%s %s] Got event for room we're not in", + room_id, event_id, ) try: @@ -460,7 +516,7 @@ class FederationHandler(BaseHandler): "ERROR", e.code, e.msg, - affected=event.event_id, + affected=event_id, ) else: @@ -509,12 +565,12 @@ class FederationHandler(BaseHandler): affected=event.event_id, ) - room = yield self.store.get_room(event.room_id) + room = yield self.store.get_room(room_id) if not room: try: yield self.store.store_room( - room_id=event.room_id, + room_id=room_id, room_creator_user_id="", is_public=False, ) @@ -542,7 +598,7 @@ class FederationHandler(BaseHandler): if newly_joined: user = UserID.from_string(event.state_key) - yield self.user_joined_room(user, event.room_id) + yield self.user_joined_room(user, room_id) @log_function @defer.inlineCallbacks @@ -1459,12 +1515,10 @@ class FederationHandler(BaseHandler): else: defer.returnValue(None) - @log_function def get_min_depth_for_context(self, context): return self.store.get_min_depth(context) @defer.inlineCallbacks - @log_function def _handle_new_event(self, origin, event, state=None, auth_events=None, backfilled=False): context = yield self._prep_event( @@ -1664,8 +1718,8 @@ class FederationHandler(BaseHandler): ) except AuthError as e: logger.warn( - "Rejecting %s because %s", - event.event_id, e.msg + "[%s %s] Rejecting: %s", + event.room_id, event.event_id, e.msg ) context.rejected = RejectedReason.AUTH_ERROR diff --git a/synapse/http/client.py b/synapse/http/client.py index ec339a92ad..3d05f83b8c 100644 --- a/synapse/http/client.py +++ b/synapse/http/client.py @@ -43,7 +43,7 @@ from twisted.web.http_headers import Headers from synapse.api.errors import Codes, HttpResponseException, SynapseError from synapse.http import cancelled_to_request_timed_out_error, redact_uri from synapse.http.endpoint import SpiderEndpoint -from synapse.util.async_helpers import add_timeout_to_deferred +from synapse.util.async_helpers import timeout_deferred from synapse.util.caches import CACHE_SIZE_FACTOR from synapse.util.logcontext import make_deferred_yieldable @@ -99,7 +99,7 @@ class SimpleHttpClient(object): request_deferred = treq.request( method, uri, agent=self.agent, data=data, headers=headers ) - add_timeout_to_deferred( + request_deferred = timeout_deferred( request_deferred, 60, self.hs.get_reactor(), cancelled_to_request_timed_out_error, ) diff --git a/synapse/http/matrixfederationclient.py b/synapse/http/matrixfederationclient.py index 530c0245a9..14b12cd1c4 100644 --- a/synapse/http/matrixfederationclient.py +++ b/synapse/http/matrixfederationclient.py @@ -44,7 +44,7 @@ from synapse.api.errors import ( SynapseError, ) from synapse.http.endpoint import matrix_federation_endpoint -from synapse.util.async_helpers import timeout_no_seriously +from synapse.util.async_helpers import timeout_deferred from synapse.util.logcontext import make_deferred_yieldable from synapse.util.metrics import Measure @@ -145,8 +145,14 @@ def _handle_json_response(reactor, timeout_sec, request, response): """ try: check_content_type_is_json(response.headers) + d = treq.json_content(response) - d.addTimeout(timeout_sec, reactor) + d = timeout_deferred( + d, + timeout=timeout_sec, + reactor=reactor, + ) + body = yield make_deferred_yieldable(d) except Exception as e: logger.warn( @@ -321,15 +327,10 @@ class MatrixFederationHttpClient(object): reactor=self.hs.get_reactor(), unbuffered=True ) - request_deferred.addTimeout(_sec_timeout, self.hs.get_reactor()) - # Sometimes the timeout above doesn't work, so lets hack yet - # another layer of timeouts in in the vain hope that at some - # point the world made sense and this really really really - # should work. - request_deferred = timeout_no_seriously( + request_deferred = timeout_deferred( request_deferred, - timeout=_sec_timeout * 2, + timeout=_sec_timeout, reactor=self.hs.get_reactor(), ) @@ -388,7 +389,11 @@ class MatrixFederationHttpClient(object): # :'( # Update transactions table? d = treq.content(response) - d.addTimeout(_sec_timeout, self.hs.get_reactor()) + d = timeout_deferred( + d, + timeout=_sec_timeout, + reactor=self.hs.get_reactor(), + ) body = yield make_deferred_yieldable(d) raise HttpResponseException( response.code, response.phrase, body diff --git a/synapse/http/site.py b/synapse/http/site.py index 9579e8cd0d..d41d672934 100644 --- a/synapse/http/site.py +++ b/synapse/http/site.py @@ -75,9 +75,9 @@ class SynapseRequest(Request): return '<%s at 0x%x method=%r uri=%r clientproto=%r site=%r>' % ( self.__class__.__name__, id(self), - self.method, + self.method.decode('ascii', errors='replace'), self.get_redacted_uri(), - self.clientproto, + self.clientproto.decode('ascii', errors='replace'), self.site.site_tag, ) diff --git a/synapse/notifier.py b/synapse/notifier.py index 82f391481c..f1d92c1395 100644 --- a/synapse/notifier.py +++ b/synapse/notifier.py @@ -25,11 +25,7 @@ from synapse.api.errors import AuthError from synapse.handlers.presence import format_user_presence_state from synapse.metrics import LaterGauge from synapse.types import StreamToken -from synapse.util.async_helpers import ( - DeferredTimeoutError, - ObservableDeferred, - add_timeout_to_deferred, -) +from synapse.util.async_helpers import ObservableDeferred, timeout_deferred from synapse.util.logcontext import PreserveLoggingContext, run_in_background from synapse.util.logutils import log_function from synapse.util.metrics import Measure @@ -337,7 +333,7 @@ class Notifier(object): # Now we wait for the _NotifierUserStream to be told there # is a new token. listener = user_stream.new_listener(prev_token) - add_timeout_to_deferred( + listener.deferred = timeout_deferred( listener.deferred, (end_time - now) / 1000., self.hs.get_reactor(), @@ -354,7 +350,7 @@ class Notifier(object): # Update the prev_token to the current_token since nothing # has happened between the old prev_token and the current_token prev_token = current_token - except DeferredTimeoutError: + except defer.TimeoutError: break except defer.CancelledError: break @@ -559,15 +555,16 @@ class Notifier(object): if end_time <= now: break - add_timeout_to_deferred( - listener.deferred.addTimeout, - (end_time - now) / 1000., - self.hs.get_reactor(), + listener.deferred = timeout_deferred( + listener.deferred, + timeout=(end_time - now) / 1000., + reactor=self.hs.get_reactor(), ) + try: with PreserveLoggingContext(): yield listener.deferred - except DeferredTimeoutError: + except defer.TimeoutError: break except defer.CancelledError: break diff --git a/synapse/util/async_helpers.py b/synapse/util/async_helpers.py index 40c2946129..ec7b2c9672 100644 --- a/synapse/util/async_helpers.py +++ b/synapse/util/async_helpers.py @@ -374,29 +374,25 @@ class ReadWriteLock(object): defer.returnValue(_ctx_manager()) -class DeferredTimeoutError(Exception): - """ - This error is raised by default when a L{Deferred} times out. - """ - +def _cancelled_to_timed_out_error(value, timeout): + if isinstance(value, failure.Failure): + value.trap(CancelledError) + raise defer.TimeoutError(timeout, "Deferred") + return value -def add_timeout_to_deferred(deferred, timeout, reactor, on_timeout_cancel=None): - """ - Add a timeout to a deferred by scheduling it to be cancelled after - timeout seconds. - This is essentially a backport of deferred.addTimeout, which was introduced - in twisted 16.5. +def timeout_deferred(deferred, timeout, reactor, on_timeout_cancel=None): + """The in built twisted `Deferred.addTimeout` fails to time out deferreds + that have a canceller that throws exceptions. This method creates a new + deferred that wraps and times out the given deferred, correctly handling + the case where the given deferred's canceller throws. - If the deferred gets timed out, it errbacks with a DeferredTimeoutError, - unless a cancelable function was passed to its initialization or unless - a different on_timeout_cancel callable is provided. + NOTE: Unlike `Deferred.addTimeout`, this function returns a new deferred Args: - deferred (defer.Deferred): deferred to be timed out - timeout (Number): seconds to time out after - reactor (twisted.internet.reactor): the Twisted reactor to use - + deferred (Deferred) + timeout (float): Timeout in seconds + reactor (twisted.internet.reactor): The twisted reactor to use on_timeout_cancel (callable): A callable which is called immediately after the deferred times out, and not if this deferred is otherwise cancelled before the timeout. @@ -406,48 +402,10 @@ def add_timeout_to_deferred(deferred, timeout, reactor, on_timeout_cancel=None): the timeout. The default callable (if none is provided) will translate a - CancelledError Failure into a DeferredTimeoutError. - """ - timed_out = [False] - - def time_it_out(): - timed_out[0] = True - deferred.cancel() - - delayed_call = reactor.callLater(timeout, time_it_out) - - def convert_cancelled(value): - if timed_out[0]: - to_call = on_timeout_cancel or _cancelled_to_timed_out_error - return to_call(value, timeout) - return value - - deferred.addBoth(convert_cancelled) + CancelledError Failure into a defer.TimeoutError. - def cancel_timeout(result): - # stop the pending call to cancel the deferred if it's been fired - if delayed_call.active(): - delayed_call.cancel() - return result - - deferred.addBoth(cancel_timeout) - - -def _cancelled_to_timed_out_error(value, timeout): - if isinstance(value, failure.Failure): - value.trap(CancelledError) - raise DeferredTimeoutError(timeout, "Deferred") - return value - - -def timeout_no_seriously(deferred, timeout, reactor): - """The in build twisted deferred addTimeout (and the method above) - completely fail to time things out under some unknown circumstances. - - Lets try a different way of timing things out and maybe that will make - things work?! - - TODO: Kill this with fire. + Returns: + Deferred """ new_d = defer.Deferred() @@ -457,16 +415,20 @@ def timeout_no_seriously(deferred, timeout, reactor): def time_it_out(): timed_out[0] = True - if not new_d.called: - new_d.errback(DeferredTimeoutError(timeout, "Deferred")) + try: + deferred.cancel() + except: # noqa: E722, if we throw any exception it'll break time outs + logger.exception("Canceller failed during timeout") - deferred.cancel() + if not new_d.called: + new_d.errback(defer.TimeoutError(timeout, "Deferred")) delayed_call = reactor.callLater(timeout, time_it_out) def convert_cancelled(value): if timed_out[0]: - return _cancelled_to_timed_out_error(value, timeout) + to_call = on_timeout_cancel or _cancelled_to_timed_out_error + return to_call(value, timeout) return value deferred.addBoth(convert_cancelled) diff --git a/synapse/util/retryutils.py b/synapse/util/retryutils.py index 8a3a06fd74..26cce7d197 100644 --- a/synapse/util/retryutils.py +++ b/synapse/util/retryutils.py @@ -188,7 +188,7 @@ class RetryDestinationLimiter(object): else: self.retry_interval = self.min_retry_interval - logger.debug( + logger.info( "Connection to %s was unsuccessful (%s(%s)); backoff now %i", self.destination, exc_type, exc_val, self.retry_interval ) |