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Messy: Fix undefined state_group for federated historical events 

```
2021-07-13 02:27:57,810 - synapse.handlers.federation - 1248 - ERROR - GET-4 - Failed to backfill from hs1 because NOT NULL constraint failed: event_to_state_groups.state_group
Traceback (most recent call last):
  File "/usr/local/lib/python3.8/site-packages/synapse/handlers/federation.py", line 1216, in try_backfill
    await self.backfill(
  File "/usr/local/lib/python3.8/site-packages/synapse/handlers/federation.py", line 1035, in backfill
    await self._auth_and_persist_event(dest, event, context, backfilled=True)
  File "/usr/local/lib/python3.8/site-packages/synapse/handlers/federation.py", line 2222, in _auth_and_persist_event
    await self._run_push_actions_and_persist_event(event, context, backfilled)
  File "/usr/local/lib/python3.8/site-packages/synapse/handlers/federation.py", line 2244, in _run_push_actions_and_persist_event
    await self.persist_events_and_notify(
  File "/usr/local/lib/python3.8/site-packages/synapse/handlers/federation.py", line 3290, in persist_events_and_notify
    events, max_stream_token = await self.storage.persistence.persist_events(
  File "/usr/local/lib/python3.8/site-packages/synapse/logging/opentracing.py", line 774, in _trace_inner
    return await func(*args, **kwargs)
  File "/usr/local/lib/python3.8/site-packages/synapse/storage/persist_events.py", line 320, in persist_events
    ret_vals = await yieldable_gather_results(enqueue, partitioned.items())
  File "/usr/local/lib/python3.8/site-packages/synapse/storage/persist_events.py", line 237, in handle_queue_loop
    ret = await self._per_item_callback(
  File "/usr/local/lib/python3.8/site-packages/synapse/storage/persist_events.py", line 577, in _persist_event_batch
    await self.persist_events_store._persist_events_and_state_updates(
  File "/usr/local/lib/python3.8/site-packages/synapse/storage/databases/main/events.py", line 176, in _persist_events_and_state_updates
    await self.db_pool.runInteraction(
  File "/usr/local/lib/python3.8/site-packages/synapse/storage/database.py", line 681, in runInteraction
    result = await self.runWithConnection(
  File "/usr/local/lib/python3.8/site-packages/synapse/storage/database.py", line 770, in runWithConnection
    return await make_deferred_yieldable(
  File "/usr/local/lib/python3.8/site-packages/twisted/python/threadpool.py", line 238, in inContext
    result = inContext.theWork()  # type: ignore[attr-defined]
  File "/usr/local/lib/python3.8/site-packages/twisted/python/threadpool.py", line 254, in <lambda>
    inContext.theWork = lambda: context.call(  # type: ignore[attr-defined]
  File "/usr/local/lib/python3.8/site-packages/twisted/python/context.py", line 118, in callWithContext
    return self.currentContext().callWithContext(ctx, func, *args, **kw)
  File "/usr/local/lib/python3.8/site-packages/twisted/python/context.py", line 83, in callWithContext
    return func(*args, **kw)
  File "/usr/local/lib/python3.8/site-packages/twisted/enterprise/adbapi.py", line 293, in _runWithConnection
    compat.reraise(excValue, excTraceback)
  File "/usr/local/lib/python3.8/site-packages/twisted/python/deprecate.py", line 298, in deprecatedFunction
    return function(*args, **kwargs)
  File "/usr/local/lib/python3.8/site-packages/twisted/python/compat.py", line 403, in reraise
    raise exception.with_traceback(traceback)
  File "/usr/local/lib/python3.8/site-packages/twisted/enterprise/adbapi.py", line 284, in _runWithConnection
    result = func(conn, *args, **kw)
  File "/usr/local/lib/python3.8/site-packages/synapse/storage/database.py", line 765, in inner_func
    return func(db_conn, *args, **kwargs)
  File "/usr/local/lib/python3.8/site-packages/synapse/storage/database.py", line 549, in new_transaction
    r = func(cursor, *args, **kwargs)
  File "/usr/local/lib/python3.8/site-packages/synapse/logging/utils.py", line 69, in wrapped
    return f(*args, **kwargs)
  File "/usr/local/lib/python3.8/site-packages/synapse/storage/databases/main/events.py", line 385, in _persist_events_txn
    self._store_event_state_mappings_txn(txn, events_and_contexts)
  File "/usr/local/lib/python3.8/site-packages/synapse/storage/databases/main/events.py", line 2065, in _store_event_state_mappings_txn
    self.db_pool.simple_insert_many_txn(
  File "/usr/local/lib/python3.8/site-packages/synapse/storage/database.py", line 923, in simple_insert_many_txn
    txn.execute_batch(sql, vals)
  File "/usr/local/lib/python3.8/site-packages/synapse/storage/database.py", line 280, in execute_batch
    self.executemany(sql, args)
  File "/usr/local/lib/python3.8/site-packages/synapse/storage/database.py", line 300, in executemany
    self._do_execute(self.txn.executemany, sql, *args)
  File "/usr/local/lib/python3.8/site-packages/synapse/storage/database.py", line 330, in _do_execute
    return func(sql, *args)
sqlite3.IntegrityError: NOT NULL constraint failed: event_to_state_groups.state_group
```
This commit is contained in:
Eric Eastwood 2021-07-20 19:56:44 -05:00
parent 8ebbc5f607
commit 187ab28611
3 changed files with 87 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

68
synapse/handlers/federation.py
View File

@ -924,7 +924,11 @@ class FederationHandler(BaseHandler):
origin,
marker_event.room_id,
[insertion_event_id],
# outlier=False,
)
# await self._get_state_after_missing_prev_event(
# origin, marker_event.room_id, insertion_event_id
# )
insertion_event = await self.store.get_event(
insertion_event_id, allow_none=True
@ -1078,15 +1082,27 @@ class FederationHandler(BaseHandler):
# Step 2: Persist the rest of the events in the chunk one by one
events.sort(key=lambda e: e.depth)
logger.info("backfill: events=%s", events)
for event in events:
if event in events_to_state:
continue
# For paranoia we ensure that these events are marked as
# non-outliers
logger.info(
"backfill: persist event_id=%s (%s) outlier=%s",
event.event_id,
event.type,
event.internal_metadata.is_outlier(),
)
assert not event.internal_metadata.is_outlier()
context = await self.state_handler.compute_event_context(event)
logger.info(
"backfill: context event_id=%s state_group=%s",
event.event_id,
context.state_group,
)
# We store these one at a time since each event depends on the
# previous to work out the state.
@ -1383,7 +1399,12 @@ class FederationHandler(BaseHandler):
return False
async def _get_events_and_persist(
self, destination: str, room_id: str, events: Iterable[str]
self,
destination: str,
room_id: str,
events: Iterable[str],
# TODO: check if still used
outlier: bool = True,
) -> None:
"""Fetch the given events from a server, and persist them as outliers.
@ -1405,7 +1426,7 @@ class FederationHandler(BaseHandler):
[destination],
event_id,
room_version,
outlier=True,
outlier=outlier,
)
if event is None:
logger.warning(
@ -2278,6 +2299,11 @@ class FederationHandler(BaseHandler):
server.
backfilled: True if the event was backfilled.
"""
logger.info(
"_auth_and_persist_event: before event_id=%s state_group=%s",
event.event_id,
context.state_group,
)
context = await self._check_event_auth(
origin,
event,
@ -2286,6 +2312,11 @@ class FederationHandler(BaseHandler):
auth_events=auth_events,
backfilled=backfilled,
)
logger.info(
"_auth_and_persist_event: after event_id=%s state_group=%s",
event.event_id,
context.state_group,
)
await self._run_push_actions_and_persist_event(event, context, backfilled)
@ -2667,9 +2698,19 @@ class FederationHandler(BaseHandler):
auth_events[(c.type, c.state_key)] = c
try:
logger.info(
"_check_event_auth: before event_id=%s state_group=%s",
event.event_id,
context.state_group,
)
context = await self._update_auth_events_and_context_for_auth(
origin, event, context, auth_events
)
logger.info(
"_check_event_auth: after event_id=%s state_group=%s",
event.event_id,
context.state_group,
)
except Exception:
# We don't really mind if the above fails, so lets not fail
# processing if it does. However, it really shouldn't fail so
@ -2756,7 +2797,11 @@ class FederationHandler(BaseHandler):
if missing_auth:
# If we don't have all the auth events, we need to get them.
logger.info("auth_events contains unknown events: %s", missing_auth)
logger.info(
"auth_events contains unknown events for event_id=%s, missing_auth=%s",
event.event_id,
missing_auth,
)
try:
try:
remote_auth_chain = await self.federation_client.get_event_auth(
@ -2793,9 +2838,13 @@ class FederationHandler(BaseHandler):
event.event_id,
e.event_id,
)
context = await self.state_handler.compute_event_context(e)
# XXX: Main fix is here. It was computing context for the missing auth event
# and re-assigning to the `context` variable used for the main event
missing_auth_context = (
await self.state_handler.compute_event_context(e)
)
await self._auth_and_persist_event(
origin, e, context, auth_events=auth
origin, e, missing_auth_context, auth_events=auth
)
if e.event_id in event_auth_events:
@ -2806,13 +2855,20 @@ class FederationHandler(BaseHandler):
except Exception:
logger.exception("Failed to get auth chain")
logger.info(
"_update_auth_events_and_context_for_auth: check outlier event_id=%s outlier=%s",
event.event_id,
event.internal_metadata.is_outlier(),
)
if event.internal_metadata.is_outlier():
# XXX: given that, for an outlier, we'll be working with the
# event's *claimed* auth events rather than those we calculated:
# (a) is there any point in this test, since different_auth below will
# obviously be empty
# (b) alternatively, why don't we do it earlier?
logger.info("Skipping auth_event fetch for outlier")
logger.info(
"Skipping auth_event fetch for outlier event_id=%s", event.event_id
)
return context
different_auth = event_auth_events.difference(

16
synapse/state/__init__.py
View File

@ -324,6 +324,13 @@ class StateHandler:
entry = await self.resolve_state_groups_for_events(
event.room_id, event.prev_event_ids()
)
logger.info(
"compute_event_context: resolve_state_groups_for_events\nstate_ids_before_event=%s\nstate_group_before_event=%s\nstate_group_before_event_prev_group=%s\ndeltas_to_state_group_before_event=%s",
entry.state,
entry.state_group,
entry.prev_group,
entry.delta_ids,
)
state_ids_before_event = entry.state
state_group_before_event = entry.state_group
@ -359,6 +366,10 @@ class StateHandler:
#
if not event.is_state():
logger.info(
"compute_event_context: returning with state_group_before_event=%s",
state_group_before_event,
)
return EventContext.with_state(
state_group_before_event=state_group_before_event,
state_group=state_group_before_event,
@ -390,6 +401,11 @@ class StateHandler:
current_state_ids=state_ids_after_event,
)
logger.info(
"compute_event_context: after\nstate_group_after_event=%s",
state_group_after_event,
)
return EventContext.with_state(
state_group=state_group_after_event,
state_group_before_event=state_group_before_event,

9
synapse/storage/databases/main/events.py
View File

@ -2032,6 +2032,13 @@ class PersistEventsStore:
):
state_groups = {}
for event, context in events_and_contexts:
logger.info(
"creating state_groups grsesegr event_id=%s outlier=%s %s",
event.event_id,
event.internal_metadata.is_outlier(),
event,
)
if event.internal_metadata.is_outlier():
continue
@ -2043,6 +2050,8 @@ class PersistEventsStore:
state_groups[event.event_id] = context.state_group
logger.info("state_groups asdfasdf %s", state_groups)
self.db_pool.simple_insert_many_txn(
txn,
table="event_to_state_groups",