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Split up _get_events into defer and txn versions

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This commit is contained in:
Erik Johnston 2015-05-20 13:27:16 +01:00
parent ab45e12d31
commit 9118a92862
1 changed files with 35 additions and 24 deletions
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59
synapse/storage/events.py
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@ -19,7 +19,6 @@ from twisted.internet import defer, reactor
from synapse.events import FrozenEvent from synapse.events import FrozenEvent
from synapse.events.utils import prune_event from synapse.events.utils import prune_event
from synapse.util import unwrap_deferred
from synapse.util.logcontext import preserve_context_over_deferred from synapse.util.logcontext import preserve_context_over_deferred
from synapse.util.logutils import log_function from synapse.util.logutils import log_function
@ -401,11 +400,7 @@ class EventsStore(SQLBaseStore):
@defer.inlineCallbacks @defer.inlineCallbacks
def _get_events(self, event_ids, check_redacted=True, def _get_events(self, event_ids, check_redacted=True,
get_prev_content=False, allow_rejected=False, txn=None): get_prev_content=False, allow_rejected=False):
"""Gets a collection of events. If `txn` is not None the we use the
current transaction to fetch events and we return a deferred that is
guarenteed to have resolved.
"""
if not event_ids: if not event_ids:
defer.returnValue([]) defer.returnValue([])
@ -424,21 +419,12 @@ class EventsStore(SQLBaseStore):
if e_id in event_map and event_map[e_id] if e_id in event_map and event_map[e_id]
]) ])
if not txn: missing_events = yield self._enqueue_events(
missing_events = yield self._enqueue_events( missing_events_ids,
missing_events_ids, check_redacted=check_redacted,
check_redacted=check_redacted, get_prev_content=get_prev_content,
get_prev_content=get_prev_content, allow_rejected=allow_rejected,
allow_rejected=allow_rejected, )
)
else:
missing_events = self._fetch_events_txn(
txn,
missing_events_ids,
check_redacted=check_redacted,
get_prev_content=get_prev_content,
allow_rejected=allow_rejected,
)
event_map.update(missing_events) event_map.update(missing_events)
@ -449,13 +435,38 @@ class EventsStore(SQLBaseStore):
def _get_events_txn(self, txn, event_ids, check_redacted=True, def _get_events_txn(self, txn, event_ids, check_redacted=True,
get_prev_content=False, allow_rejected=False): get_prev_content=False, allow_rejected=False):
return unwrap_deferred(self._get_events( if not event_ids:
return []
event_map = self._get_events_from_cache(
event_ids, event_ids,
check_redacted=check_redacted, check_redacted=check_redacted,
get_prev_content=get_prev_content, get_prev_content=get_prev_content,
allow_rejected=allow_rejected, allow_rejected=allow_rejected,
txn=txn, )
))
missing_events_ids = [e for e in event_ids if e not in event_map]
if not missing_events_ids:
return [
event_map[e_id] for e_id in event_ids
if e_id in event_map and event_map[e_id]
]
missing_events = self._fetch_events_txn(
txn,
missing_events_ids,
check_redacted=check_redacted,
get_prev_content=get_prev_content,
allow_rejected=allow_rejected,
)
event_map.update(missing_events)
return [
event_map[e_id] for e_id in event_ids
if e_id in event_map and event_map[e_id]
]
def _invalidate_get_event_cache(self, event_id): def _invalidate_get_event_cache(self, event_id):
for check_redacted in (False, True): for check_redacted in (False, True):