forked from MirrorHub/synapse
Split out get_events and co into a worker store
This commit is contained in:
Erik Johnston
parent
a2b25de68d
commit
27b094f382
2 changed files with 352 additions and 356 deletions
|
|
@ -18,6 +18,7 @@ from synapse.api.constants import EventTypes
|
|||
from synapse.storage import DataStore
|
||||
from synapse.storage.event_federation import EventFederationStore
|
||||
from synapse.storage.event_push_actions import EventPushActionsStore
|
||||
from synapse.storage.events import EventsWorkerStore
|
||||
from synapse.storage.roommember import RoomMemberStore
|
||||
from synapse.storage.state import StateGroupWorkerStore
|
||||
from synapse.storage.stream import StreamStore
|
||||
|
|
@ -38,7 +39,7 @@ logger = logging.getLogger(__name__)
|
|||
# the method descriptor on the DataStore and chuck them into our class.
|
||||
|
||||
|
||||
class SlavedEventStore(StateGroupWorkerStore, BaseSlavedStore):
|
||||
class SlavedEventStore(EventsWorkerStore, StateGroupWorkerStore, BaseSlavedStore):
|
||||
|
||||
def __init__(self, db_conn, hs):
|
||||
super(SlavedEventStore, self).__init__(db_conn, hs)
|
||||
|
|
@ -104,8 +105,6 @@ class SlavedEventStore(StateGroupWorkerStore, BaseSlavedStore):
|
|||
get_push_action_users_in_range = (
|
||||
DataStore.get_push_action_users_in_range.__func__
|
||||
)
|
||||
get_event = DataStore.get_event.__func__
|
||||
get_events = DataStore.get_events.__func__
|
||||
get_rooms_for_user_where_membership_is = (
|
||||
DataStore.get_rooms_for_user_where_membership_is.__func__
|
||||
)
|
||||
|
|
@ -135,14 +134,6 @@ class SlavedEventStore(StateGroupWorkerStore, BaseSlavedStore):
|
|||
|
||||
_set_before_and_after = staticmethod(DataStore._set_before_and_after)
|
||||
|
||||
_get_events = DataStore._get_events.__func__
|
||||
_get_events_from_cache = DataStore._get_events_from_cache.__func__
|
||||
|
||||
_invalidate_get_event_cache = DataStore._invalidate_get_event_cache.__func__
|
||||
_enqueue_events = DataStore._enqueue_events.__func__
|
||||
_do_fetch = DataStore._do_fetch.__func__
|
||||
_fetch_event_rows = DataStore._fetch_event_rows.__func__
|
||||
_get_event_from_row = DataStore._get_event_from_row.__func__
|
||||
_get_rooms_for_user_where_membership_is_txn = (
|
||||
DataStore._get_rooms_for_user_where_membership_is_txn.__func__
|
||||
)
|
||||
|
|
|
|||
|
|
@ -199,7 +199,356 @@ def _retry_on_integrity_error(func):
|
|||
return f
|
||||
|
||||
|
||||
class EventsStore(SQLBaseStore):
|
||||
class EventsWorkerStore(SQLBaseStore):
|
||||
def __init__(self, db_conn, hs):
|
||||
super(EventsWorkerStore, self).__init__(db_conn, hs)
|
||||
|
||||
self._event_persist_queue = _EventPeristenceQueue()
|
||||
|
||||
@defer.inlineCallbacks
|
||||
def get_event(self, event_id, check_redacted=True,
|
||||
get_prev_content=False, allow_rejected=False,
|
||||
allow_none=False):
|
||||
"""Get an event from the database by event_id.
|
||||
|
||||
Args:
|
||||
event_id (str): The event_id of the event to fetch
|
||||
check_redacted (bool): If True, check if event has been redacted
|
||||
and redact it.
|
||||
get_prev_content (bool): If True and event is a state event,
|
||||
include the previous states content in the unsigned field.
|
||||
allow_rejected (bool): If True return rejected events.
|
||||
allow_none (bool): If True, return None if no event found, if
|
||||
False throw an exception.
|
||||
|
||||
Returns:
|
||||
Deferred : A FrozenEvent.
|
||||
"""
|
||||
events = yield self._get_events(
|
||||
[event_id],
|
||||
check_redacted=check_redacted,
|
||||
get_prev_content=get_prev_content,
|
||||
allow_rejected=allow_rejected,
|
||||
)
|
||||
|
||||
if not events and not allow_none:
|
||||
raise SynapseError(404, "Could not find event %s" % (event_id,))
|
||||
|
||||
defer.returnValue(events[0] if events else None)
|
||||
|
||||
@defer.inlineCallbacks
|
||||
def get_events(self, event_ids, check_redacted=True,
|
||||
get_prev_content=False, allow_rejected=False):
|
||||
"""Get events from the database
|
||||
|
||||
Args:
|
||||
event_ids (list): The event_ids of the events to fetch
|
||||
check_redacted (bool): If True, check if event has been redacted
|
||||
and redact it.
|
||||
get_prev_content (bool): If True and event is a state event,
|
||||
include the previous states content in the unsigned field.
|
||||
allow_rejected (bool): If True return rejected events.
|
||||
|
||||
Returns:
|
||||
Deferred : Dict from event_id to event.
|
||||
"""
|
||||
events = yield self._get_events(
|
||||
event_ids,
|
||||
check_redacted=check_redacted,
|
||||
get_prev_content=get_prev_content,
|
||||
allow_rejected=allow_rejected,
|
||||
)
|
||||
|
||||
defer.returnValue({e.event_id: e for e in events})
|
||||
|
||||
@defer.inlineCallbacks
|
||||
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:
|
||||
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 _invalidate_get_event_cache(self, event_id):
|
||||
self._get_event_cache.invalidate((event_id,))
|
||||
|
||||
def _get_events_from_cache(self, events, allow_rejected, update_metrics=True):
|
||||
"""Fetch events from the caches
|
||||
|
||||
Args:
|
||||
events (list(str)): list of event_ids to fetch
|
||||
allow_rejected (bool): Whether to teturn events that were rejected
|
||||
update_metrics (bool): Whether to update the cache hit ratio metrics
|
||||
|
||||
Returns:
|
||||
dict of event_id -> _EventCacheEntry for each event_id in cache. If
|
||||
allow_rejected is `False` then there will still be an entry but it
|
||||
will be `None`
|
||||
"""
|
||||
event_map = {}
|
||||
|
||||
for event_id in events:
|
||||
ret = self._get_event_cache.get(
|
||||
(event_id,), None,
|
||||
update_metrics=update_metrics,
|
||||
)
|
||||
if not ret:
|
||||
continue
|
||||
|
||||
if allow_rejected or not ret.event.rejected_reason:
|
||||
event_map[event_id] = ret
|
||||
else:
|
||||
event_map[event_id] = None
|
||||
|
||||
return event_map
|
||||
|
||||
def _do_fetch(self, conn):
|
||||
"""Takes a database connection and waits for requests for events from
|
||||
the _event_fetch_list queue.
|
||||
"""
|
||||
event_list = []
|
||||
i = 0
|
||||
while True:
|
||||
try:
|
||||
with self._event_fetch_lock:
|
||||
event_list = self._event_fetch_list
|
||||
self._event_fetch_list = []
|
||||
|
||||
if not event_list:
|
||||
single_threaded = self.database_engine.single_threaded
|
||||
if single_threaded or i > EVENT_QUEUE_ITERATIONS:
|
||||
self._event_fetch_ongoing -= 1
|
||||
return
|
||||
else:
|
||||
self._event_fetch_lock.wait(EVENT_QUEUE_TIMEOUT_S)
|
||||
i += 1
|
||||
continue
|
||||
i = 0
|
||||
|
||||
event_id_lists = zip(*event_list)[0]
|
||||
event_ids = [
|
||||
item for sublist in event_id_lists for item in sublist
|
||||
]
|
||||
|
||||
rows = self._new_transaction(
|
||||
conn, "do_fetch", [], [], None, self._fetch_event_rows, event_ids
|
||||
)
|
||||
|
||||
row_dict = {
|
||||
r["event_id"]: r
|
||||
for r in rows
|
||||
}
|
||||
|
||||
# We only want to resolve deferreds from the main thread
|
||||
def fire(lst, res):
|
||||
for ids, d in lst:
|
||||
if not d.called:
|
||||
try:
|
||||
with PreserveLoggingContext():
|
||||
d.callback([
|
||||
res[i]
|
||||
for i in ids
|
||||
if i in res
|
||||
])
|
||||
except Exception:
|
||||
logger.exception("Failed to callback")
|
||||
with PreserveLoggingContext():
|
||||
reactor.callFromThread(fire, event_list, row_dict)
|
||||
except Exception as e:
|
||||
logger.exception("do_fetch")
|
||||
|
||||
# We only want to resolve deferreds from the main thread
|
||||
def fire(evs):
|
||||
for _, d in evs:
|
||||
if not d.called:
|
||||
with PreserveLoggingContext():
|
||||
d.errback(e)
|
||||
|
||||
if event_list:
|
||||
with PreserveLoggingContext():
|
||||
reactor.callFromThread(fire, event_list)
|
||||
|
||||
@defer.inlineCallbacks
|
||||
def _enqueue_events(self, events, check_redacted=True, allow_rejected=False):
|
||||
"""Fetches events from the database using the _event_fetch_list. This
|
||||
allows batch and bulk fetching of events - it allows us to fetch events
|
||||
without having to create a new transaction for each request for events.
|
||||
"""
|
||||
if not events:
|
||||
defer.returnValue({})
|
||||
|
||||
events_d = defer.Deferred()
|
||||
with self._event_fetch_lock:
|
||||
self._event_fetch_list.append(
|
||||
(events, events_d)
|
||||
)
|
||||
|
||||
self._event_fetch_lock.notify()
|
||||
|
||||
if self._event_fetch_ongoing < EVENT_QUEUE_THREADS:
|
||||
self._event_fetch_ongoing += 1
|
||||
should_start = True
|
||||
else:
|
||||
should_start = False
|
||||
|
||||
if should_start:
|
||||
with PreserveLoggingContext():
|
||||
self.runWithConnection(
|
||||
self._do_fetch
|
||||
)
|
||||
|
||||
logger.debug("Loading %d events", len(events))
|
||||
with PreserveLoggingContext():
|
||||
rows = yield events_d
|
||||
logger.debug("Loaded %d events (%d rows)", len(events), len(rows))
|
||||
|
||||
if not allow_rejected:
|
||||
rows[:] = [r for r in rows if not r["rejects"]]
|
||||
|
||||
res = yield make_deferred_yieldable(defer.gatherResults(
|
||||
[
|
||||
preserve_fn(self._get_event_from_row)(
|
||||
row["internal_metadata"], row["json"], row["redacts"],
|
||||
rejected_reason=row["rejects"],
|
||||
)
|
||||
for row in rows
|
||||
],
|
||||
consumeErrors=True
|
||||
))
|
||||
|
||||
defer.returnValue({
|
||||
e.event.event_id: e
|
||||
for e in res if e
|
||||
})
|
||||
|
||||
def _fetch_event_rows(self, txn, events):
|
||||
rows = []
|
||||
N = 200
|
||||
for i in range(1 + len(events) / N):
|
||||
evs = events[i * N:(i + 1) * N]
|
||||
if not evs:
|
||||
break
|
||||
|
||||
sql = (
|
||||
"SELECT "
|
||||
" e.event_id as event_id, "
|
||||
" e.internal_metadata,"
|
||||
" e.json,"
|
||||
" r.redacts as redacts,"
|
||||
" rej.event_id as rejects "
|
||||
" FROM event_json as e"
|
||||
" LEFT JOIN rejections as rej USING (event_id)"
|
||||
" LEFT JOIN redactions as r ON e.event_id = r.redacts"
|
||||
" WHERE e.event_id IN (%s)"
|
||||
) % (",".join(["?"] * len(evs)),)
|
||||
|
||||
txn.execute(sql, evs)
|
||||
rows.extend(self.cursor_to_dict(txn))
|
||||
|
||||
return rows
|
||||
|
||||
@defer.inlineCallbacks
|
||||
def _get_event_from_row(self, internal_metadata, js, redacted,
|
||||
rejected_reason=None):
|
||||
with Measure(self._clock, "_get_event_from_row"):
|
||||
d = json.loads(js)
|
||||
internal_metadata = json.loads(internal_metadata)
|
||||
|
||||
if rejected_reason:
|
||||
rejected_reason = yield self._simple_select_one_onecol(
|
||||
table="rejections",
|
||||
keyvalues={"event_id": rejected_reason},
|
||||
retcol="reason",
|
||||
desc="_get_event_from_row_rejected_reason",
|
||||
)
|
||||
|
||||
original_ev = FrozenEvent(
|
||||
d,
|
||||
internal_metadata_dict=internal_metadata,
|
||||
rejected_reason=rejected_reason,
|
||||
)
|
||||
|
||||
redacted_event = None
|
||||
if redacted:
|
||||
redacted_event = prune_event(original_ev)
|
||||
|
||||
redaction_id = yield self._simple_select_one_onecol(
|
||||
table="redactions",
|
||||
keyvalues={"redacts": redacted_event.event_id},
|
||||
retcol="event_id",
|
||||
desc="_get_event_from_row_redactions",
|
||||
)
|
||||
|
||||
redacted_event.unsigned["redacted_by"] = redaction_id
|
||||
# Get the redaction event.
|
||||
|
||||
because = yield self.get_event(
|
||||
redaction_id,
|
||||
check_redacted=False,
|
||||
allow_none=True,
|
||||
)
|
||||
|
||||
if because:
|
||||
# It's fine to do add the event directly, since get_pdu_json
|
||||
# will serialise this field correctly
|
||||
redacted_event.unsigned["redacted_because"] = because
|
||||
|
||||
cache_entry = _EventCacheEntry(
|
||||
event=original_ev,
|
||||
redacted_event=redacted_event,
|
||||
)
|
||||
|
||||
self._get_event_cache.prefill((original_ev.event_id,), cache_entry)
|
||||
|
||||
defer.returnValue(cache_entry)
|
||||
|
||||
|
||||
class EventsStore(EventsWorkerStore):
|
||||
EVENT_ORIGIN_SERVER_TS_NAME = "event_origin_server_ts"
|
||||
EVENT_FIELDS_SENDER_URL_UPDATE_NAME = "event_fields_sender_url"
|
||||
|
||||
|
|
@ -234,8 +583,6 @@ class EventsStore(SQLBaseStore):
|
|||
psql_only=True,
|
||||
)
|
||||
|
||||
self._event_persist_queue = _EventPeristenceQueue()
|
||||
|
||||
self._state_resolution_handler = hs.get_state_resolution_handler()
|
||||
|
||||
def persist_events(self, events_and_contexts, backfilled=False):
|
||||
|
|
@ -609,62 +956,6 @@ class EventsStore(SQLBaseStore):
|
|||
|
||||
defer.returnValue((to_delete, to_insert))
|
||||
|
||||
@defer.inlineCallbacks
|
||||
def get_event(self, event_id, check_redacted=True,
|
||||
get_prev_content=False, allow_rejected=False,
|
||||
allow_none=False):
|
||||
"""Get an event from the database by event_id.
|
||||
|
||||
Args:
|
||||
event_id (str): The event_id of the event to fetch
|
||||
check_redacted (bool): If True, check if event has been redacted
|
||||
and redact it.
|
||||
get_prev_content (bool): If True and event is a state event,
|
||||
include the previous states content in the unsigned field.
|
||||
allow_rejected (bool): If True return rejected events.
|
||||
allow_none (bool): If True, return None if no event found, if
|
||||
False throw an exception.
|
||||
|
||||
Returns:
|
||||
Deferred : A FrozenEvent.
|
||||
"""
|
||||
events = yield self._get_events(
|
||||
[event_id],
|
||||
check_redacted=check_redacted,
|
||||
get_prev_content=get_prev_content,
|
||||
allow_rejected=allow_rejected,
|
||||
)
|
||||
|
||||
if not events and not allow_none:
|
||||
raise SynapseError(404, "Could not find event %s" % (event_id,))
|
||||
|
||||
defer.returnValue(events[0] if events else None)
|
||||
|
||||
@defer.inlineCallbacks
|
||||
def get_events(self, event_ids, check_redacted=True,
|
||||
get_prev_content=False, allow_rejected=False):
|
||||
"""Get events from the database
|
||||
|
||||
Args:
|
||||
event_ids (list): The event_ids of the events to fetch
|
||||
check_redacted (bool): If True, check if event has been redacted
|
||||
and redact it.
|
||||
get_prev_content (bool): If True and event is a state event,
|
||||
include the previous states content in the unsigned field.
|
||||
allow_rejected (bool): If True return rejected events.
|
||||
|
||||
Returns:
|
||||
Deferred : Dict from event_id to event.
|
||||
"""
|
||||
events = yield self._get_events(
|
||||
event_ids,
|
||||
check_redacted=check_redacted,
|
||||
get_prev_content=get_prev_content,
|
||||
allow_rejected=allow_rejected,
|
||||
)
|
||||
|
||||
defer.returnValue({e.event_id: e for e in events})
|
||||
|
||||
@log_function
|
||||
def _persist_events_txn(self, txn, events_and_contexts, backfilled,
|
||||
delete_existing=False, state_delta_for_room={},
|
||||
|
|
@ -1375,292 +1666,6 @@ class EventsStore(SQLBaseStore):
|
|||
"have_events", f,
|
||||
)
|
||||
|
||||
@defer.inlineCallbacks
|
||||
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:
|
||||
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 _invalidate_get_event_cache(self, event_id):
|
||||
self._get_event_cache.invalidate((event_id,))
|
||||
|
||||
def _get_events_from_cache(self, events, allow_rejected, update_metrics=True):
|
||||
"""Fetch events from the caches
|
||||
|
||||
Args:
|
||||
events (list(str)): list of event_ids to fetch
|
||||
allow_rejected (bool): Whether to teturn events that were rejected
|
||||
update_metrics (bool): Whether to update the cache hit ratio metrics
|
||||
|
||||
Returns:
|
||||
dict of event_id -> _EventCacheEntry for each event_id in cache. If
|
||||
allow_rejected is `False` then there will still be an entry but it
|
||||
will be `None`
|
||||
"""
|
||||
event_map = {}
|
||||
|
||||
for event_id in events:
|
||||
ret = self._get_event_cache.get(
|
||||
(event_id,), None,
|
||||
update_metrics=update_metrics,
|
||||
)
|
||||
if not ret:
|
||||
continue
|
||||
|
||||
if allow_rejected or not ret.event.rejected_reason:
|
||||
event_map[event_id] = ret
|
||||
else:
|
||||
event_map[event_id] = None
|
||||
|
||||
return event_map
|
||||
|
||||
def _do_fetch(self, conn):
|
||||
"""Takes a database connection and waits for requests for events from
|
||||
the _event_fetch_list queue.
|
||||
"""
|
||||
event_list = []
|
||||
i = 0
|
||||
while True:
|
||||
try:
|
||||
with self._event_fetch_lock:
|
||||
event_list = self._event_fetch_list
|
||||
self._event_fetch_list = []
|
||||
|
||||
if not event_list:
|
||||
single_threaded = self.database_engine.single_threaded
|
||||
if single_threaded or i > EVENT_QUEUE_ITERATIONS:
|
||||
self._event_fetch_ongoing -= 1
|
||||
return
|
||||
else:
|
||||
self._event_fetch_lock.wait(EVENT_QUEUE_TIMEOUT_S)
|
||||
i += 1
|
||||
continue
|
||||
i = 0
|
||||
|
||||
event_id_lists = zip(*event_list)[0]
|
||||
event_ids = [
|
||||
item for sublist in event_id_lists for item in sublist
|
||||
]
|
||||
|
||||
rows = self._new_transaction(
|
||||
conn, "do_fetch", [], [], None, self._fetch_event_rows, event_ids
|
||||
)
|
||||
|
||||
row_dict = {
|
||||
r["event_id"]: r
|
||||
for r in rows
|
||||
}
|
||||
|
||||
# We only want to resolve deferreds from the main thread
|
||||
def fire(lst, res):
|
||||
for ids, d in lst:
|
||||
if not d.called:
|
||||
try:
|
||||
with PreserveLoggingContext():
|
||||
d.callback([
|
||||
res[i]
|
||||
for i in ids
|
||||
if i in res
|
||||
])
|
||||
except Exception:
|
||||
logger.exception("Failed to callback")
|
||||
with PreserveLoggingContext():
|
||||
reactor.callFromThread(fire, event_list, row_dict)
|
||||
except Exception as e:
|
||||
logger.exception("do_fetch")
|
||||
|
||||
# We only want to resolve deferreds from the main thread
|
||||
def fire(evs):
|
||||
for _, d in evs:
|
||||
if not d.called:
|
||||
with PreserveLoggingContext():
|
||||
d.errback(e)
|
||||
|
||||
if event_list:
|
||||
with PreserveLoggingContext():
|
||||
reactor.callFromThread(fire, event_list)
|
||||
|
||||
@defer.inlineCallbacks
|
||||
def _enqueue_events(self, events, check_redacted=True, allow_rejected=False):
|
||||
"""Fetches events from the database using the _event_fetch_list. This
|
||||
allows batch and bulk fetching of events - it allows us to fetch events
|
||||
without having to create a new transaction for each request for events.
|
||||
"""
|
||||
if not events:
|
||||
defer.returnValue({})
|
||||
|
||||
events_d = defer.Deferred()
|
||||
with self._event_fetch_lock:
|
||||
self._event_fetch_list.append(
|
||||
(events, events_d)
|
||||
)
|
||||
|
||||
self._event_fetch_lock.notify()
|
||||
|
||||
if self._event_fetch_ongoing < EVENT_QUEUE_THREADS:
|
||||
self._event_fetch_ongoing += 1
|
||||
should_start = True
|
||||
else:
|
||||
should_start = False
|
||||
|
||||
if should_start:
|
||||
with PreserveLoggingContext():
|
||||
self.runWithConnection(
|
||||
self._do_fetch
|
||||
)
|
||||
|
||||
logger.debug("Loading %d events", len(events))
|
||||
with PreserveLoggingContext():
|
||||
rows = yield events_d
|
||||
logger.debug("Loaded %d events (%d rows)", len(events), len(rows))
|
||||
|
||||
if not allow_rejected:
|
||||
rows[:] = [r for r in rows if not r["rejects"]]
|
||||
|
||||
res = yield make_deferred_yieldable(defer.gatherResults(
|
||||
[
|
||||
preserve_fn(self._get_event_from_row)(
|
||||
row["internal_metadata"], row["json"], row["redacts"],
|
||||
rejected_reason=row["rejects"],
|
||||
)
|
||||
for row in rows
|
||||
],
|
||||
consumeErrors=True
|
||||
))
|
||||
|
||||
defer.returnValue({
|
||||
e.event.event_id: e
|
||||
for e in res if e
|
||||
})
|
||||
|
||||
def _fetch_event_rows(self, txn, events):
|
||||
rows = []
|
||||
N = 200
|
||||
for i in range(1 + len(events) / N):
|
||||
evs = events[i * N:(i + 1) * N]
|
||||
if not evs:
|
||||
break
|
||||
|
||||
sql = (
|
||||
"SELECT "
|
||||
" e.event_id as event_id, "
|
||||
" e.internal_metadata,"
|
||||
" e.json,"
|
||||
" r.redacts as redacts,"
|
||||
" rej.event_id as rejects "
|
||||
" FROM event_json as e"
|
||||
" LEFT JOIN rejections as rej USING (event_id)"
|
||||
" LEFT JOIN redactions as r ON e.event_id = r.redacts"
|
||||
" WHERE e.event_id IN (%s)"
|
||||
) % (",".join(["?"] * len(evs)),)
|
||||
|
||||
txn.execute(sql, evs)
|
||||
rows.extend(self.cursor_to_dict(txn))
|
||||
|
||||
return rows
|
||||
|
||||
@defer.inlineCallbacks
|
||||
def _get_event_from_row(self, internal_metadata, js, redacted,
|
||||
rejected_reason=None):
|
||||
with Measure(self._clock, "_get_event_from_row"):
|
||||
d = json.loads(js)
|
||||
internal_metadata = json.loads(internal_metadata)
|
||||
|
||||
if rejected_reason:
|
||||
rejected_reason = yield self._simple_select_one_onecol(
|
||||
table="rejections",
|
||||
keyvalues={"event_id": rejected_reason},
|
||||
retcol="reason",
|
||||
desc="_get_event_from_row_rejected_reason",
|
||||
)
|
||||
|
||||
original_ev = FrozenEvent(
|
||||
d,
|
||||
internal_metadata_dict=internal_metadata,
|
||||
rejected_reason=rejected_reason,
|
||||
)
|
||||
|
||||
redacted_event = None
|
||||
if redacted:
|
||||
redacted_event = prune_event(original_ev)
|
||||
|
||||
redaction_id = yield self._simple_select_one_onecol(
|
||||
table="redactions",
|
||||
keyvalues={"redacts": redacted_event.event_id},
|
||||
retcol="event_id",
|
||||
desc="_get_event_from_row_redactions",
|
||||
)
|
||||
|
||||
redacted_event.unsigned["redacted_by"] = redaction_id
|
||||
# Get the redaction event.
|
||||
|
||||
because = yield self.get_event(
|
||||
redaction_id,
|
||||
check_redacted=False,
|
||||
allow_none=True,
|
||||
)
|
||||
|
||||
if because:
|
||||
# It's fine to do add the event directly, since get_pdu_json
|
||||
# will serialise this field correctly
|
||||
redacted_event.unsigned["redacted_because"] = because
|
||||
|
||||
cache_entry = _EventCacheEntry(
|
||||
event=original_ev,
|
||||
redacted_event=redacted_event,
|
||||
)
|
||||
|
||||
self._get_event_cache.prefill((original_ev.event_id,), cache_entry)
|
||||
|
||||
defer.returnValue(cache_entry)
|
||||
|
||||
@defer.inlineCallbacks
|
||||
def count_daily_messages(self):
|
||||
"""
|
||||
|
|
|
|||
Loading…
Reference in a new issue