diff --git a/synapse/handlers/federation.py b/synapse/handlers/federation.py
index abe02907b9..60bb00fc6a 100644
--- a/synapse/handlers/federation.py
+++ b/synapse/handlers/federation.py
@@ -19,7 +19,7 @@
import itertools
import logging
-from typing import Dict, Iterable, Optional, Sequence, Tuple
+from typing import Dict, Iterable, List, Optional, Sequence, Tuple
import six
from six import iteritems, itervalues
@@ -63,6 +63,7 @@ from synapse.replication.http.federation import (
)
from synapse.replication.http.membership import ReplicationUserJoinedLeftRoomRestServlet
from synapse.state import StateResolutionStore, resolve_events_with_store
+from synapse.storage.data_stores.main.events_worker import EventRedactBehaviour
from synapse.types import UserID, get_domain_from_id
from synapse.util.async_helpers import Linearizer, concurrently_execute
from synapse.util.distributor import user_joined_room
@@ -163,8 +164,7 @@ class FederationHandler(BaseHandler):
self._ephemeral_messages_enabled = hs.config.enable_ephemeral_messages
- @defer.inlineCallbacks
- def on_receive_pdu(self, origin, pdu, sent_to_us_directly=False):
+ async def on_receive_pdu(self, origin, pdu, sent_to_us_directly=False) -> None:
""" Process a PDU received via a federation /send/ transaction, or
via backfill of missing prev_events
@@ -174,17 +174,15 @@ class FederationHandler(BaseHandler):
pdu (FrozenEvent): received PDU
sent_to_us_directly (bool): True if this event was pushed to us; False if
we pulled it as the result of a missing prev_event.
-
- 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)
+ logger.info("handling received PDU: %s", pdu)
# We reprocess pdus when we have seen them only as outliers
- existing = yield self.store.get_event(
+ existing = await self.store.get_event(
event_id, allow_none=True, allow_rejected=True
)
@@ -228,7 +226,7 @@ class FederationHandler(BaseHandler):
#
# Note that if we were never in the room then we would have already
# dropped the event, since we wouldn't know the room version.
- is_in_room = yield self.auth.check_host_in_room(room_id, self.server_name)
+ is_in_room = await self.auth.check_host_in_room(room_id, self.server_name)
if not is_in_room:
logger.info(
"[%s %s] Ignoring PDU from %s as we're not in the room",
@@ -243,12 +241,12 @@ class FederationHandler(BaseHandler):
# Get missing pdus if necessary.
if not pdu.internal_metadata.is_outlier():
# We only backfill backwards to the min depth.
- min_depth = yield self.get_min_depth_for_context(pdu.room_id)
+ min_depth = await self.get_min_depth_for_context(pdu.room_id)
logger.debug("[%s %s] min_depth: %d", room_id, event_id, min_depth)
prevs = set(pdu.prev_event_ids())
- seen = yield self.store.have_seen_events(prevs)
+ seen = await self.store.have_seen_events(prevs)
if min_depth and pdu.depth < min_depth:
# This is so that we don't notify the user about this
@@ -268,7 +266,7 @@ class FederationHandler(BaseHandler):
len(missing_prevs),
shortstr(missing_prevs),
)
- with (yield self._room_pdu_linearizer.queue(pdu.room_id)):
+ with (await self._room_pdu_linearizer.queue(pdu.room_id)):
logger.info(
"[%s %s] Acquired room lock to fetch %d missing prev_events",
room_id,
@@ -276,13 +274,19 @@ class FederationHandler(BaseHandler):
len(missing_prevs),
)
- yield self._get_missing_events_for_pdu(
- origin, pdu, prevs, min_depth
- )
+ try:
+ await self._get_missing_events_for_pdu(
+ origin, pdu, prevs, min_depth
+ )
+ except Exception as e:
+ raise Exception(
+ "Error fetching missing prev_events for %s: %s"
+ % (event_id, e)
+ )
# Update the set of things we've seen after trying to
# fetch the missing stuff
- seen = yield self.store.have_seen_events(prevs)
+ seen = await self.store.have_seen_events(prevs)
if not prevs - seen:
logger.info(
@@ -290,14 +294,6 @@ class FederationHandler(BaseHandler):
room_id,
event_id,
)
- elif missing_prevs:
- logger.info(
- "[%s %s] Not recursively fetching %d missing prev_events: %s",
- room_id,
- event_id,
- len(missing_prevs),
- shortstr(missing_prevs),
- )
if prevs - seen:
# We've still not been able to get all of the prev_events for this event.
@@ -342,12 +338,18 @@ class FederationHandler(BaseHandler):
affected=pdu.event_id,
)
+ logger.info(
+ "Event %s is missing prev_events: calculating state for a "
+ "backwards extremity",
+ event_id,
+ )
+
# Calculate the state after each of the previous events, and
# resolve them to find the correct state at the current event.
event_map = {event_id: pdu}
try:
# Get the state of the events we know about
- ours = yield self.state_store.get_state_groups_ids(room_id, seen)
+ ours = await self.state_store.get_state_groups_ids(room_id, seen)
# state_maps is a list of mappings from (type, state_key) to event_id
state_maps = list(
@@ -361,17 +363,14 @@ class FederationHandler(BaseHandler):
# know about
for p in prevs - seen:
logger.info(
- "[%s %s] Requesting state at missing prev_event %s",
- room_id,
- event_id,
- p,
+ "Requesting state at missing prev_event %s", event_id,
)
with nested_logging_context(p):
# note that if any of the missing prevs share missing state or
# auth events, the requests to fetch those events are deduped
# by the get_pdu_cache in federation_client.
- (remote_state, _,) = yield self._get_state_for_room(
+ (remote_state, _,) = await self._get_state_for_room(
origin, room_id, p, include_event_in_state=True
)
@@ -383,8 +382,8 @@ class FederationHandler(BaseHandler):
for x in remote_state:
event_map[x.event_id] = x
- room_version = yield self.store.get_room_version(room_id)
- state_map = yield resolve_events_with_store(
+ room_version = await self.store.get_room_version(room_id)
+ state_map = await resolve_events_with_store(
room_id,
room_version,
state_maps,
@@ -397,10 +396,10 @@ class FederationHandler(BaseHandler):
# First though we need to fetch all the events that are in
# state_map, so we can build up the state below.
- evs = yield self.store.get_events(
+ evs = await self.store.get_events(
list(state_map.values()),
get_prev_content=False,
- check_redacted=False,
+ redact_behaviour=EventRedactBehaviour.AS_IS,
)
event_map.update(evs)
@@ -420,10 +419,9 @@ class FederationHandler(BaseHandler):
affected=event_id,
)
- yield self._process_received_pdu(origin, pdu, state=state)
+ await self._process_received_pdu(origin, pdu, state=state)
- @defer.inlineCallbacks
- def _get_missing_events_for_pdu(self, origin, pdu, prevs, min_depth):
+ async def _get_missing_events_for_pdu(self, origin, pdu, prevs, min_depth):
"""
Args:
origin (str): Origin of the pdu. Will be called to get the missing events
@@ -435,12 +433,12 @@ class FederationHandler(BaseHandler):
room_id = pdu.room_id
event_id = pdu.event_id
- seen = yield self.store.have_seen_events(prevs)
+ seen = await self.store.have_seen_events(prevs)
if not prevs - seen:
return
- latest = yield self.store.get_latest_event_ids_in_room(room_id)
+ latest = await 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
@@ -504,7 +502,7 @@ class FederationHandler(BaseHandler):
# All that said: Let's try increasing the timout to 60s and see what happens.
try:
- missing_events = yield self.federation_client.get_missing_events(
+ missing_events = await self.federation_client.get_missing_events(
origin,
room_id,
earliest_events_ids=list(latest),
@@ -543,7 +541,7 @@ class FederationHandler(BaseHandler):
)
with nested_logging_context(ev.event_id):
try:
- yield self.on_receive_pdu(origin, ev, sent_to_us_directly=False)
+ await self.on_receive_pdu(origin, ev, sent_to_us_directly=False)
except FederationError as e:
if e.code == 403:
logger.warning(
@@ -555,29 +553,30 @@ class FederationHandler(BaseHandler):
else:
raise
- @defer.inlineCallbacks
- @log_function
- def _get_state_for_room(
- self, destination, room_id, event_id, include_event_in_state
- ):
+ async def _get_state_for_room(
+ self,
+ destination: str,
+ room_id: str,
+ event_id: str,
+ include_event_in_state: bool = False,
+ ) -> Tuple[List[EventBase], List[EventBase]]:
"""Requests all of the room state at a given event from a remote homeserver.
Args:
- destination (str): The remote homeserver to query for the state.
- room_id (str): The id of the room we're interested in.
- event_id (str): The id of the event we want the state at.
+ destination: The remote homeserver to query for the state.
+ room_id: The id of the room we're interested in.
+ event_id: The id of the event we want the state at.
include_event_in_state: if true, the event itself will be included in the
returned state event list.
Returns:
- Deferred[Tuple[List[EventBase], List[EventBase]]]:
- A list of events in the state, and a list of events in the auth chain
- for the given event.
+ A list of events in the state, possibly including the event itself, and
+ a list of events in the auth chain for the given event.
"""
(
state_event_ids,
auth_event_ids,
- ) = yield self.federation_client.get_room_state_ids(
+ ) = await self.federation_client.get_room_state_ids(
destination, room_id, event_id=event_id
)
@@ -586,15 +585,15 @@ class FederationHandler(BaseHandler):
if include_event_in_state:
desired_events.add(event_id)
- event_map = yield self._get_events_from_store_or_dest(
+ event_map = await self._get_events_from_store_or_dest(
destination, room_id, desired_events
)
failed_to_fetch = desired_events - event_map.keys()
if failed_to_fetch:
logger.warning(
- "Failed to fetch missing state/auth events for %s: %s",
- room_id,
+ "Failed to fetch missing state/auth events for %s %s",
+ event_id,
failed_to_fetch,
)
@@ -614,15 +613,11 @@ class FederationHandler(BaseHandler):
return remote_state, auth_chain
- @defer.inlineCallbacks
- def _get_events_from_store_or_dest(self, destination, room_id, event_ids):
+ async def _get_events_from_store_or_dest(
+ self, destination: str, room_id: str, event_ids: Iterable[str]
+ ) -> Dict[str, EventBase]:
"""Fetch events from a remote destination, checking if we already have them.
- Args:
- destination (str)
- room_id (str)
- event_ids (Iterable[str])
-
Persists any events we don't already have as outliers.
If we fail to fetch any of the events, a warning will be logged, and the event
@@ -630,10 +625,9 @@ class FederationHandler(BaseHandler):
be in the given room.
Returns:
- Deferred[dict[str, EventBase]]: A deferred resolving to a map
- from event_id to event
+ map from event_id to event
"""
- fetched_events = yield self.store.get_events(event_ids, allow_rejected=True)
+ fetched_events = await self.store.get_events(event_ids, allow_rejected=True)
missing_events = set(event_ids) - fetched_events.keys()
@@ -644,14 +638,14 @@ class FederationHandler(BaseHandler):
room_id,
)
- yield self._get_events_and_persist(
+ await self._get_events_and_persist(
destination=destination, room_id=room_id, events=missing_events
)
# we need to make sure we re-load from the database to get the rejected
# state correct.
fetched_events.update(
- (yield self.store.get_events(missing_events, allow_rejected=True))
+ (await self.store.get_events(missing_events, allow_rejected=True))
)
# check for events which were in the wrong room.
@@ -677,12 +671,14 @@ class FederationHandler(BaseHandler):
bad_room_id,
room_id,
)
+
del fetched_events[bad_event_id]
return fetched_events
- @defer.inlineCallbacks
- def _process_received_pdu(self, origin, event, state):
+ async def _process_received_pdu(
+ self, origin: str, event: EventBase, state: Optional[Iterable[EventBase]],
+ ):
""" Called when we have a new pdu. We need to do auth checks and put it
through the StateHandler.
@@ -701,15 +697,15 @@ class FederationHandler(BaseHandler):
logger.debug("[%s %s] Processing event: %s", room_id, event_id, event)
try:
- context = yield self._handle_new_event(origin, event, state=state)
+ context = await self._handle_new_event(origin, event, state=state)
except AuthError as e:
raise FederationError("ERROR", e.code, e.msg, affected=event.event_id)
- room = yield self.store.get_room(room_id)
+ room = await self.store.get_room(room_id)
if not room:
try:
- yield self.store.store_room(
+ await self.store.store_room(
room_id=room_id, room_creator_user_id="", is_public=False
)
except StoreError:
@@ -722,11 +718,11 @@ class FederationHandler(BaseHandler):
# changing their profile info.
newly_joined = True
- prev_state_ids = yield context.get_prev_state_ids(self.store)
+ prev_state_ids = await context.get_prev_state_ids(self.store)
prev_state_id = prev_state_ids.get((event.type, event.state_key))
if prev_state_id:
- prev_state = yield self.store.get_event(
+ prev_state = await self.store.get_event(
prev_state_id, allow_none=True
)
if prev_state and prev_state.membership == Membership.JOIN:
@@ -734,11 +730,10 @@ class FederationHandler(BaseHandler):
if newly_joined:
user = UserID.from_string(event.state_key)
- yield self.user_joined_room(user, room_id)
+ await self.user_joined_room(user, room_id)
@log_function
- @defer.inlineCallbacks
- def backfill(self, dest, room_id, limit, extremities):
+ async def backfill(self, dest, room_id, limit, extremities):
""" Trigger a backfill request to `dest` for the given `room_id`
This will attempt to get more events from the remote. If the other side
@@ -755,7 +750,7 @@ class FederationHandler(BaseHandler):
if dest == self.server_name:
raise SynapseError(400, "Can't backfill from self.")
- events = yield self.federation_client.backfill(
+ events = await self.federation_client.backfill(
dest, room_id, limit=limit, extremities=extremities
)
@@ -770,7 +765,7 @@ class FederationHandler(BaseHandler):
# self._sanity_check_event(ev)
# Don't bother processing events we already have.
- seen_events = yield self.store.have_events_in_timeline(
+ seen_events = await self.store.have_events_in_timeline(
set(e.event_id for e in events)
)
@@ -796,7 +791,7 @@ class FederationHandler(BaseHandler):
state_events = {}
events_to_state = {}
for e_id in edges:
- state, auth = yield self._get_state_for_room(
+ state, auth = await self._get_state_for_room(
destination=dest, room_id=room_id, event_id=e_id
)
auth_events.update({a.event_id: a for a in auth})
@@ -840,7 +835,7 @@ class FederationHandler(BaseHandler):
)
)
- yield self._handle_new_events(dest, ev_infos, backfilled=True)
+ await self._handle_new_events(dest, ev_infos, backfilled=True)
# Step 2: Persist the rest of the events in the chunk one by one
events.sort(key=lambda e: e.depth)
@@ -856,16 +851,15 @@ class FederationHandler(BaseHandler):
# We store these one at a time since each event depends on the
# previous to work out the state.
# TODO: We can probably do something more clever here.
- yield self._handle_new_event(dest, event, backfilled=True)
+ await self._handle_new_event(dest, event, backfilled=True)
return events
- @defer.inlineCallbacks
- def maybe_backfill(self, room_id, current_depth):
+ async def maybe_backfill(self, room_id, current_depth):
"""Checks the database to see if we should backfill before paginating,
and if so do.
"""
- extremities = yield self.store.get_oldest_events_with_depth_in_room(room_id)
+ extremities = await self.store.get_oldest_events_with_depth_in_room(room_id)
if not extremities:
logger.debug("Not backfilling as no extremeties found.")
@@ -897,15 +891,17 @@ class FederationHandler(BaseHandler):
# state *before* the event, ignoring the special casing certain event
# types have.
- forward_events = yield self.store.get_successor_events(list(extremities))
+ forward_events = await self.store.get_successor_events(list(extremities))
- extremities_events = yield self.store.get_events(
- forward_events, check_redacted=False, get_prev_content=False
+ extremities_events = await self.store.get_events(
+ forward_events,
+ redact_behaviour=EventRedactBehaviour.AS_IS,
+ get_prev_content=False,
)
# We set `check_history_visibility_only` as we might otherwise get false
# positives from users having been erased.
- filtered_extremities = yield filter_events_for_server(
+ filtered_extremities = await filter_events_for_server(
self.storage,
self.server_name,
list(extremities_events.values()),
@@ -935,7 +931,7 @@ class FederationHandler(BaseHandler):
# First we try hosts that are already in the room
# TODO: HEURISTIC ALERT.
- curr_state = yield self.state_handler.get_current_state(room_id)
+ curr_state = await self.state_handler.get_current_state(room_id)
def get_domains_from_state(state):
"""Get joined domains from state
@@ -974,12 +970,11 @@ class FederationHandler(BaseHandler):
domain for domain, depth in curr_domains if domain != self.server_name
]
- @defer.inlineCallbacks
- def try_backfill(domains):
+ async def try_backfill(domains):
# TODO: Should we try multiple of these at a time?
for dom in domains:
try:
- yield self.backfill(
+ await self.backfill(
dom, room_id, limit=100, extremities=extremities
)
# If this succeeded then we probably already have the
@@ -1010,7 +1005,7 @@ class FederationHandler(BaseHandler):
return False
- success = yield try_backfill(likely_domains)
+ success = await try_backfill(likely_domains)
if success:
return True
@@ -1024,7 +1019,7 @@ class FederationHandler(BaseHandler):
logger.debug("calling resolve_state_groups in _maybe_backfill")
resolve = preserve_fn(self.state_handler.resolve_state_groups_for_events)
- states = yield make_deferred_yieldable(
+ states = await make_deferred_yieldable(
defer.gatherResults(
[resolve(room_id, [e]) for e in event_ids], consumeErrors=True
)
@@ -1034,7 +1029,7 @@ class FederationHandler(BaseHandler):
# event_ids.
states = dict(zip(event_ids, [s.state for s in states]))
- state_map = yield self.store.get_events(
+ state_map = await self.store.get_events(
[e_id for ids in itervalues(states) for e_id in itervalues(ids)],
get_prev_content=False,
)
@@ -1050,7 +1045,7 @@ class FederationHandler(BaseHandler):
for e_id, _ in sorted_extremeties_tuple:
likely_domains = get_domains_from_state(states[e_id])
- success = yield try_backfill(
+ success = await try_backfill(
[dom for dom, _ in likely_domains if dom not in tried_domains]
)
if success:
@@ -1060,8 +1055,7 @@ class FederationHandler(BaseHandler):
return False
- @defer.inlineCallbacks
- def _get_events_and_persist(
+ async def _get_events_and_persist(
self, destination: str, room_id: str, events: Iterable[str]
):
"""Fetch the given events from a server, and persist them as outliers.
@@ -1069,7 +1063,7 @@ class FederationHandler(BaseHandler):
Logs a warning if we can't find the given event.
"""
- room_version = yield self.store.get_room_version(room_id)
+ room_version = await self.store.get_room_version(room_id)
event_infos = []
@@ -1105,9 +1099,9 @@ class FederationHandler(BaseHandler):
e,
)
- yield concurrently_execute(get_event, events, 5)
+ await concurrently_execute(get_event, events, 5)
- yield self._handle_new_events(
+ await self._handle_new_events(
destination, event_infos,
)
@@ -1250,7 +1244,7 @@ class FederationHandler(BaseHandler):
# Check whether this room is the result of an upgrade of a room we already know
# about. If so, migrate over user information
predecessor = yield self.store.get_room_predecessor(room_id)
- if not predecessor:
+ if not predecessor or not isinstance(predecessor.get("room_id"), str):
return
old_room_id = predecessor["room_id"]
logger.debug(
@@ -1278,8 +1272,7 @@ class FederationHandler(BaseHandler):
return True
- @defer.inlineCallbacks
- def _handle_queued_pdus(self, room_queue):
+ async def _handle_queued_pdus(self, room_queue):
"""Process PDUs which got queued up while we were busy send_joining.
Args:
@@ -1295,7 +1288,7 @@ class FederationHandler(BaseHandler):
p.room_id,
)
with nested_logging_context(p.event_id):
- yield self.on_receive_pdu(origin, p, sent_to_us_directly=True)
+ await self.on_receive_pdu(origin, p, sent_to_us_directly=True)
except Exception as e:
logger.warning(
"Error handling queued PDU %s from %s: %s", p.event_id, origin, e
@@ -1493,7 +1486,7 @@ class FederationHandler(BaseHandler):
@defer.inlineCallbacks
def do_remotely_reject_invite(self, target_hosts, room_id, user_id, content):
origin, event, event_format_version = yield self._make_and_verify_event(
- target_hosts, room_id, user_id, "leave", content=content,
+ target_hosts, room_id, user_id, "leave", content=content
)
# Mark as outlier as we don't have any state for this event; we're not
# even in the room.
@@ -2854,7 +2847,7 @@ class FederationHandler(BaseHandler):
room_id=room_id, user_id=user.to_string(), change="joined"
)
else:
- return user_joined_room(self.distributor, user, room_id)
+ return defer.succeed(user_joined_room(self.distributor, user, room_id))
@defer.inlineCallbacks
def get_room_complexity(self, remote_room_hosts, room_id):
|
