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Merge pull request #536 from matrix-org/erikj/sync

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Make /sync "better".
This commit is contained in:
Erik Johnston 2016-01-29 13:04:51 +00:00
parent 02a9c3be6c 467c27a1f9
commit b18114e19e
10 changed files with 503 additions and 326 deletions
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15
synapse/handlers/message.py
View file

@ -16,7 +16,7 @@
from twisted.internet import defer
from synapse.api.constants import EventTypes, Membership
from synapse.api.errors import SynapseError, AuthError, Codes
from synapse.api.errors import AuthError, Codes
from synapse.streams.config import PaginationConfig
from synapse.events.utils import serialize_event
from synapse.events.validator import EventValidator
@ -119,9 +119,12 @@ class MessageHandler(BaseHandler):
if source_config.direction == 'b':
# if we're going backwards, we might need to backfill. This
# requires that we have a topo token.
if room_token.topological is None:
raise SynapseError(400, "Invalid token: cannot paginate "
"backwards from a stream token")
if room_token.topological:
max_topo = room_token.topological
else:
max_topo = yield self.store.get_max_topological_token_for_stream_and_room(
room_id, room_token.stream
)
if membership == Membership.LEAVE:
# If they have left the room then clamp the token to be before
@ -131,11 +134,11 @@ class MessageHandler(BaseHandler):
member_event_id
)
leave_token = RoomStreamToken.parse(leave_token)
if leave_token.topological < room_token.topological:
if leave_token.topological < max_topo:
source_config.from_key = str(leave_token)
yield self.hs.get_handlers().federation_handler.maybe_backfill(
room_id, room_token.topological
room_id, max_topo
)
events, next_key = yield data_source.get_pagination_rows(

406
synapse/handlers/sync.py
View file

@ -72,7 +72,7 @@ class JoinedSyncResult(collections.namedtuple("JoinedSyncResult", [
)
class ArchivedSyncResult(collections.namedtuple("JoinedSyncResult", [
class ArchivedSyncResult(collections.namedtuple("ArchivedSyncResult", [
"room_id", # str
"timeline", # TimelineBatch
"state", # dict[(str, str), FrozenEvent]
@ -298,46 +298,19 @@ class SyncHandler(BaseHandler):
room_id, sync_config, now_token, since_token=timeline_since_token
)
notifs = yield self.unread_notifs_for_room_id(
room_id, sync_config, ephemeral_by_room
room_sync = yield self.incremental_sync_with_gap_for_room(
room_id, sync_config,
now_token=now_token,
since_token=timeline_since_token,
ephemeral_by_room=ephemeral_by_room,
tags_by_room=tags_by_room,
account_data_by_room=account_data_by_room,
all_ephemeral_by_room=ephemeral_by_room,
batch=batch,
full_state=True,
)
unread_notifications = {}
if notifs is not None:
unread_notifications["notification_count"] = len(notifs)
unread_notifications["highlight_count"] = len([
1 for notif in notifs if _action_has_highlight(notif["actions"])
])
current_state = yield self.get_state_at(room_id, now_token)
current_state = {
(e.type, e.state_key): e
for e in sync_config.filter_collection.filter_room_state(
current_state.values()
)
}
account_data = self.account_data_for_room(
room_id, tags_by_room, account_data_by_room
)
account_data = sync_config.filter_collection.filter_room_account_data(
account_data
)
ephemeral = sync_config.filter_collection.filter_room_ephemeral(
ephemeral_by_room.get(room_id, [])
)
defer.returnValue(JoinedSyncResult(
room_id=room_id,
timeline=batch,
state=current_state,
ephemeral=ephemeral,
account_data=account_data,
unread_notifications=unread_notifications,
))
defer.returnValue(room_sync)
def account_data_for_user(self, account_data):
account_data_events = []
@ -429,44 +402,20 @@ class SyncHandler(BaseHandler):
defer.returnValue((now_token, ephemeral_by_room))
@defer.inlineCallbacks
def full_state_sync_for_archived_room(self, room_id, sync_config,
leave_event_id, leave_token,
timeline_since_token, tags_by_room,
account_data_by_room):
"""Sync a room for a client which is starting without any state
Returns:
A Deferred JoinedSyncResult.
A Deferred ArchivedSyncResult.
"""
batch = yield self.load_filtered_recents(
room_id, sync_config, leave_token, since_token=timeline_since_token
return self.incremental_sync_for_archived_room(
sync_config, room_id, leave_event_id, timeline_since_token, tags_by_room,
account_data_by_room, full_state=True, leave_token=leave_token,
)
leave_state = yield self.store.get_state_for_event(leave_event_id)
leave_state = {
(e.type, e.state_key): e
for e in sync_config.filter_collection.filter_room_state(
leave_state.values()
)
}
account_data = self.account_data_for_room(
room_id, tags_by_room, account_data_by_room
)
account_data = sync_config.filter_collection.filter_room_account_data(
account_data
)
defer.returnValue(ArchivedSyncResult(
room_id=room_id,
timeline=batch,
state=leave_state,
account_data=account_data,
))
@defer.inlineCallbacks
def incremental_sync_with_gap(self, sync_config, since_token):
""" Get the incremental delta needed to bring the client up to
@ -512,154 +461,127 @@ class SyncHandler(BaseHandler):
sync_config.user
)
user_id = sync_config.user.to_string()
timeline_limit = sync_config.filter_collection.timeline_limit()
room_events, _ = yield self.store.get_room_events_stream(
sync_config.user.to_string(),
from_key=since_token.room_key,
to_key=now_token.room_key,
limit=timeline_limit + 1,
)
tags_by_room = yield self.store.get_updated_tags(
sync_config.user.to_string(),
user_id,
since_token.account_data_key,
)
account_data, account_data_by_room = (
yield self.store.get_updated_account_data_for_user(
sync_config.user.to_string(),
user_id,
since_token.account_data_key,
)
)
joined = []
# Get a list of membership change events that have happened.
rooms_changed = yield self.store.get_room_changes_for_user(
user_id, since_token.room_key, now_token.room_key
)
mem_change_events_by_room_id = {}
for event in rooms_changed:
mem_change_events_by_room_id.setdefault(event.room_id, []).append(event)
newly_joined_rooms = []
archived = []
if len(room_events) <= timeline_limit:
# There is no gap in any of the rooms. Therefore we can just
# partition the new events by room and return them.
logger.debug("Got %i events for incremental sync - not limited",
len(room_events))
invited = []
for room_id, events in mem_change_events_by_room_id.items():
non_joins = [e for e in events if e.membership != Membership.JOIN]
has_join = len(non_joins) != len(events)
invite_events = []
leave_events = []
events_by_room_id = {}
for event in room_events:
events_by_room_id.setdefault(event.room_id, []).append(event)
if event.room_id not in joined_room_ids:
if (event.type == EventTypes.Member
and event.state_key == sync_config.user.to_string()):
if event.membership == Membership.INVITE:
invite_events.append(event)
elif event.membership in (Membership.LEAVE, Membership.BAN):
leave_events.append(event)
# We want to figure out if we joined the room at some point since
# the last sync (even if we have since left). This is to make sure
# we do send down the room, and with full state, where necessary
if room_id in joined_room_ids or has_join:
old_state = yield self.get_state_at(room_id, since_token)
old_mem_ev = old_state.get((EventTypes.Member, user_id), None)
if not old_mem_ev or old_mem_ev.membership != Membership.JOIN:
newly_joined_rooms.append(room_id)
for room_id in joined_room_ids:
recents = events_by_room_id.get(room_id, [])
logger.debug("Events for room %s: %r", room_id, recents)
state = {
(event.type, event.state_key): event
for event in recents if event.is_state()}
limited = False
if room_id in joined_room_ids:
continue
if recents:
prev_batch = now_token.copy_and_replace(
"room_key", recents[0].internal_metadata.before
)
else:
prev_batch = now_token
just_joined = yield self.check_joined_room(sync_config, state)
if just_joined:
logger.debug("User has just joined %s: needs full state",
room_id)
state = yield self.get_state_at(room_id, now_token)
# the timeline is inherently limited if we've just joined
limited = True
recents = sync_config.filter_collection.filter_room_timeline(recents)
state = {
(e.type, e.state_key): e
for e in sync_config.filter_collection.filter_room_state(
state.values()
)
}
acc_data = self.account_data_for_room(
room_id, tags_by_room, account_data_by_room
)
acc_data = sync_config.filter_collection.filter_room_account_data(
acc_data
)
ephemeral = sync_config.filter_collection.filter_room_ephemeral(
ephemeral_by_room.get(room_id, [])
)
room_sync = JoinedSyncResult(
room_id=room_id,
timeline=TimelineBatch(
events=recents,
prev_batch=prev_batch,
limited=limited,
),
state=state,
ephemeral=ephemeral,
account_data=acc_data,
unread_notifications={},
)
logger.debug("Result for room %s: %r", room_id, room_sync)
if not non_joins:
continue
# Only bother if we're still currently invited
should_invite = non_joins[-1].membership == Membership.INVITE
if should_invite:
room_sync = InvitedSyncResult(room_id, invite=non_joins[-1])
if room_sync:
notifs = yield self.unread_notifs_for_room_id(
room_id, sync_config, all_ephemeral_by_room
)
invited.append(room_sync)
if notifs is not None:
notif_dict = room_sync.unread_notifications
notif_dict["notification_count"] = len(notifs)
notif_dict["highlight_count"] = len([
1 for notif in notifs
if _action_has_highlight(notif["actions"])
])
# Always include leave/ban events. Just take the last one.
# TODO: How do we handle ban -> leave in same batch?
leave_events = [
e for e in non_joins
if e.membership in (Membership.LEAVE, Membership.BAN)
]
joined.append(room_sync)
else:
logger.debug("Got %i events for incremental sync - hit limit",
len(room_events))
invite_events = yield self.store.get_invites_for_user(
sync_config.user.to_string()
)
leave_events = yield self.store.get_leave_and_ban_events_for_user(
sync_config.user.to_string()
)
for room_id in joined_room_ids:
room_sync = yield self.incremental_sync_with_gap_for_room(
room_id, sync_config, since_token, now_token,
ephemeral_by_room, tags_by_room, account_data_by_room,
all_ephemeral_by_room=all_ephemeral_by_room,
if leave_events:
leave_event = leave_events[-1]
room_sync = yield self.incremental_sync_for_archived_room(
sync_config, room_id, leave_event.event_id, since_token,
tags_by_room, account_data_by_room,
full_state=room_id in newly_joined_rooms
)
if room_sync:
joined.append(room_sync)
archived.append(room_sync)
for leave_event in leave_events:
room_sync = yield self.incremental_sync_for_archived_room(
sync_config, leave_event, since_token, tags_by_room,
account_data_by_room
# Get all events for rooms we're currently joined to.
room_to_events = yield self.store.get_room_events_stream_for_rooms(
room_ids=joined_room_ids,
from_key=since_token.room_key,
to_key=now_token.room_key,
limit=timeline_limit + 1,
)
joined = []
# We loop through all room ids, even if there are no new events, in case
# there are non room events taht we need to notify about.
for room_id in joined_room_ids:
room_entry = room_to_events.get(room_id, None)
if room_entry:
events, start_key = room_entry
prev_batch_token = now_token.copy_and_replace("room_key", start_key)
newly_joined_room = room_id in newly_joined_rooms
full_state = newly_joined_room
batch = yield self.load_filtered_recents(
room_id, sync_config, prev_batch_token,
since_token=since_token,
recents=events,
newly_joined_room=newly_joined_room,
)
else:
batch = TimelineBatch(
events=[],
prev_batch=since_token,
limited=False,
)
full_state = False
room_sync = yield self.incremental_sync_with_gap_for_room(
room_id=room_id,
sync_config=sync_config,
since_token=since_token,
now_token=now_token,
ephemeral_by_room=ephemeral_by_room,
tags_by_room=tags_by_room,
account_data_by_room=account_data_by_room,
all_ephemeral_by_room=all_ephemeral_by_room,
batch=batch,
full_state=full_state,
)
if room_sync:
archived.append(room_sync)
invited = [
InvitedSyncResult(room_id=event.room_id, invite=event)
for event in invite_events
]
joined.append(room_sync)
account_data_for_user = sync_config.filter_collection.filter_account_data(
self.account_data_for_user(account_data)
@ -680,28 +602,40 @@ class SyncHandler(BaseHandler):
@defer.inlineCallbacks
def load_filtered_recents(self, room_id, sync_config, now_token,
since_token=None):
since_token=None, recents=None, newly_joined_room=False):
"""
:returns a Deferred TimelineBatch
"""
limited = True
recents = []
filtering_factor = 2
timeline_limit = sync_config.filter_collection.timeline_limit()
load_limit = max(timeline_limit * filtering_factor, 100)
max_repeat = 3 # Only try a few times per room, otherwise
load_limit = max(timeline_limit * filtering_factor, 10)
max_repeat = 5 # Only try a few times per room, otherwise
room_key = now_token.room_key
end_key = room_key
limited = recents is None or newly_joined_room or timeline_limit < len(recents)
if recents is not None:
recents = sync_config.filter_collection.filter_room_timeline(recents)
recents = yield self._filter_events_for_client(
sync_config.user.to_string(),
recents,
is_peeking=sync_config.is_guest,
)
else:
recents = []
since_key = None
if since_token and not newly_joined_room:
since_key = since_token.room_key
while limited and len(recents) < timeline_limit and max_repeat:
events, keys = yield self.store.get_recent_events_for_room(
events, end_key = yield self.store.get_room_events_stream_for_room(
room_id,
limit=load_limit + 1,
from_token=since_token.room_key if since_token else None,
end_token=end_key,
from_key=since_key,
to_key=end_key,
)
room_key, _ = keys
end_key = "s" + room_key.split('-')[-1]
loaded_recents = sync_config.filter_collection.filter_room_timeline(events)
loaded_recents = yield self._filter_events_for_client(
sync_config.user.to_string(),
@ -710,8 +644,10 @@ class SyncHandler(BaseHandler):
)
loaded_recents.extend(recents)
recents = loaded_recents
if len(events) <= load_limit:
limited = False
break
max_repeat -= 1
if len(recents) > timeline_limit:
@ -724,7 +660,9 @@ class SyncHandler(BaseHandler):
)
defer.returnValue(TimelineBatch(
events=recents, prev_batch=prev_batch_token, limited=limited
events=recents,
prev_batch=prev_batch_token,
limited=limited or newly_joined_room
))
@defer.inlineCallbacks
@ -732,25 +670,12 @@ class SyncHandler(BaseHandler):
since_token, now_token,
ephemeral_by_room, tags_by_room,
account_data_by_room,
all_ephemeral_by_room):
""" Get the incremental delta needed to bring the client up to date for
the room. Gives the client the most recent events and the changes to
state.
Returns:
A Deferred JoinedSyncResult
"""
logger.debug("Doing incremental sync for room %s between %s and %s",
room_id, since_token, now_token)
all_ephemeral_by_room,
batch, full_state=False):
if full_state:
state = yield self.get_state_at(room_id, now_token)
# TODO(mjark): Check for redactions we might have missed.
batch = yield self.load_filtered_recents(
room_id, sync_config, now_token, since_token,
)
logger.debug("Recents %r", batch)
if batch.limited:
elif batch.limited:
current_state = yield self.get_state_at(room_id, now_token)
state_at_previous_sync = yield self.get_state_at(
@ -814,43 +739,48 @@ class SyncHandler(BaseHandler):
defer.returnValue(room_sync)
@defer.inlineCallbacks
def incremental_sync_for_archived_room(self, sync_config, leave_event,
def incremental_sync_for_archived_room(self, sync_config, room_id, leave_event_id,
since_token, tags_by_room,
account_data_by_room):
account_data_by_room, full_state,
leave_token=None):
""" Get the incremental delta needed to bring the client up to date for
the archived room.
Returns:
A Deferred ArchivedSyncResult
"""
stream_token = yield self.store.get_stream_token_for_event(
leave_event.event_id
)
if not leave_token:
stream_token = yield self.store.get_stream_token_for_event(
leave_event_id
)
leave_token = since_token.copy_and_replace("room_key", stream_token)
leave_token = since_token.copy_and_replace("room_key", stream_token)
if since_token.is_after(leave_token):
if since_token and since_token.is_after(leave_token):
defer.returnValue(None)
batch = yield self.load_filtered_recents(
leave_event.room_id, sync_config, leave_token, since_token,
room_id, sync_config, leave_token, since_token,
)
logger.debug("Recents %r", batch)
state_events_at_leave = yield self.store.get_state_for_event(
leave_event.event_id
leave_event_id
)
state_at_previous_sync = yield self.get_state_at(
leave_event.room_id, stream_position=since_token
)
if not full_state:
state_at_previous_sync = yield self.get_state_at(
room_id, stream_position=since_token
)
state_events_delta = yield self.compute_state_delta(
since_token=since_token,
previous_state=state_at_previous_sync,
current_state=state_events_at_leave,
)
state_events_delta = yield self.compute_state_delta(
since_token=since_token,
previous_state=state_at_previous_sync,
current_state=state_events_at_leave,
)
else:
state_events_delta = state_events_at_leave
state_events_delta = {
(e.type, e.state_key): e
@ -860,7 +790,7 @@ class SyncHandler(BaseHandler):
}
account_data = self.account_data_for_room(
leave_event.room_id, tags_by_room, account_data_by_room
room_id, tags_by_room, account_data_by_room
)
account_data = sync_config.filter_collection.filter_room_account_data(
@ -868,7 +798,7 @@ class SyncHandler(BaseHandler):
)
room_sync = ArchivedSyncResult(
room_id=leave_event.room_id,
room_id=room_id,
timeline=batch,
state=state_events_delta,
account_data=account_data,

21
synapse/storage/account_data.py
View file

@ -14,6 +14,7 @@
# limitations under the License.
from ._base import SQLBaseStore
from synapse.util.caches.stream_change_cache import StreamChangeCache
from twisted.internet import defer
import ujson as json
@ -23,6 +24,14 @@ logger = logging.getLogger(__name__)
class AccountDataStore(SQLBaseStore):
def __init__(self, hs):
super(AccountDataStore, self).__init__(hs)
self._account_data_stream_cache = StreamChangeCache(
"AccountDataAndTagsChangeCache",
self._account_data_id_gen.get_max_token(None),
max_size=1000,
)
def get_account_data_for_user(self, user_id):
"""Get all the client account_data for a user.
@ -83,7 +92,7 @@ class AccountDataStore(SQLBaseStore):
"get_account_data_for_room", get_account_data_for_room_txn
)
def get_updated_account_data_for_user(self, user_id, stream_id):
def get_updated_account_data_for_user(self, user_id, stream_id, room_ids=None):
"""Get all the client account_data for a that's changed.
Args:
@ -120,6 +129,12 @@ class AccountDataStore(SQLBaseStore):
return (global_account_data, account_data_by_room)
changed = self._account_data_stream_cache.has_entity_changed(
user_id, int(stream_id)
)
if not changed:
return ({}, {})
return self.runInteraction(
"get_updated_account_data_for_user", get_updated_account_data_for_user_txn
)
@ -186,6 +201,10 @@ class AccountDataStore(SQLBaseStore):
"content": content_json,
}
)
txn.call_after(
self._account_data_stream_cache.entity_has_changed,
user_id, next_id,
)
self._update_max_stream_id(txn, next_id)
with (yield self._account_data_id_gen.get_next(self)) as next_id:

6
synapse/storage/events.py
View file

@ -210,6 +210,12 @@ class EventsStore(SQLBaseStore):
for event, _ in events_and_contexts:
txn.call_after(self._invalidate_get_event_cache, event.event_id)
if not backfilled:
txn.call_after(
self._events_stream_cache.entity_has_changed,
event.room_id, event.internal_metadata.stream_ordering,
)
depth_updates = {}
for event, _ in events_and_contexts:
if event.internal_metadata.is_outlier():

79
synapse/storage/receipts.py
View file

@ -15,11 +15,10 @@
from ._base import SQLBaseStore
from synapse.util.caches.descriptors import cachedInlineCallbacks, cachedList, cached
from synapse.util.caches import cache_counter, caches_by_name
from synapse.util.caches.stream_change_cache import StreamChangeCache
from twisted.internet import defer
from blist import sorteddict
import logging
import ujson as json
@ -31,8 +30,8 @@ class ReceiptsStore(SQLBaseStore):
def __init__(self, hs):
super(ReceiptsStore, self).__init__(hs)
self._receipts_stream_cache = _RoomStreamChangeCache(
self._receipts_id_gen.get_max_token(None)
self._receipts_stream_cache = StreamChangeCache(
"ReceiptsRoomChangeCache", self._receipts_id_gen.get_max_token(None)
)
@cached(num_args=2)
@ -78,8 +77,8 @@ class ReceiptsStore(SQLBaseStore):
room_ids = set(room_ids)
if from_key:
room_ids = yield self._receipts_stream_cache.get_rooms_changed(
self, room_ids, from_key
room_ids = yield self._receipts_stream_cache.get_entities_changed(
room_ids, from_key
)
results = yield self._get_linearized_receipts_for_rooms(
@ -222,6 +221,11 @@ class ReceiptsStore(SQLBaseStore):
# FIXME: This shouldn't invalidate the whole cache
txn.call_after(self.get_linearized_receipts_for_room.invalidate_all)
txn.call_after(
self._receipts_stream_cache.entity_has_changed,
room_id, stream_id
)
# We don't want to clobber receipts for more recent events, so we
# have to compare orderings of existing receipts
sql = (
@ -309,9 +313,6 @@ class ReceiptsStore(SQLBaseStore):
stream_id_manager = yield self._receipts_id_gen.get_next(self)
with stream_id_manager as stream_id:
yield self._receipts_stream_cache.room_has_changed(
self, room_id, stream_id
)
have_persisted = yield self.runInteraction(
"insert_linearized_receipt",
self.insert_linearized_receipt_txn,
@ -370,63 +371,3 @@ class ReceiptsStore(SQLBaseStore):
"data": json.dumps(data),
}
)
class _RoomStreamChangeCache(object):
"""Keeps track of the stream_id of the latest change in rooms.
Given a list of rooms and stream key, it will give a subset of rooms that
may have changed since that key. If the key is too old then the cache
will simply return all rooms.
"""
def __init__(self, current_key, size_of_cache=10000):
self._size_of_cache = size_of_cache
self._room_to_key = {}
self._cache = sorteddict()
self._earliest_key = current_key
self.name = "ReceiptsRoomChangeCache"
caches_by_name[self.name] = self._cache
@defer.inlineCallbacks
def get_rooms_changed(self, store, room_ids, key):
"""Returns subset of room ids that have had new receipts since the
given key. If the key is too old it will just return the given list.
"""
if key > (yield self._get_earliest_key(store)):
keys = self._cache.keys()
i = keys.bisect_right(key)
result = set(
self._cache[k] for k in keys[i:]
).intersection(room_ids)
cache_counter.inc_hits(self.name)
else:
result = room_ids
cache_counter.inc_misses(self.name)
defer.returnValue(result)
@defer.inlineCallbacks
def room_has_changed(self, store, room_id, key):
"""Informs the cache that the room has been changed at the given key.
"""
if key > (yield self._get_earliest_key(store)):
old_key = self._room_to_key.get(room_id, None)
if old_key:
key = max(key, old_key)
self._cache.pop(old_key, None)
self._cache[key] = room_id
while len(self._cache) > self._size_of_cache:
k, r = self._cache.popitem()
self._earliest_key = max(k, self._earliest_key)
self._room_to_key.pop(r, None)
@defer.inlineCallbacks
def _get_earliest_key(self, store):
if self._earliest_key is None:
self._earliest_key = yield store.get_max_receipt_stream_id()
self._earliest_key = int(self._earliest_key)
defer.returnValue(self._earliest_key)

16
synapse/storage/schema/delta/28/events_room_stream.sql Normal file
View file

@ -0,0 +1,16 @@
/* Copyright 2016 OpenMarket Ltd
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
CREATE INDEX events_room_stream on events(room_id, stream_ordering);

158
synapse/storage/stream.py
View file

@ -37,6 +37,7 @@ from twisted.internet import defer
from ._base import SQLBaseStore
from synapse.util.caches.descriptors import cachedInlineCallbacks
from synapse.util.caches.stream_change_cache import StreamChangeCache
from synapse.api.constants import EventTypes
from synapse.types import RoomStreamToken
from synapse.util.logutils import log_function
@ -77,6 +78,12 @@ def upper_bound(token):
class StreamStore(SQLBaseStore):
def __init__(self, hs):
super(StreamStore, self).__init__(hs)
self._events_stream_cache = StreamChangeCache(
"EventsRoomStreamChangeCache", self._stream_id_gen.get_max_token(None)
)
@defer.inlineCallbacks
def get_appservice_room_stream(self, service, from_key, to_key, limit=0):
@ -157,6 +164,135 @@ class StreamStore(SQLBaseStore):
results = yield self.runInteraction("get_appservice_room_stream", f)
defer.returnValue(results)
@defer.inlineCallbacks
def get_room_events_stream_for_rooms(self, room_ids, from_key, to_key, limit=0):
from_id = RoomStreamToken.parse_stream_token(from_key).stream
room_ids = yield self._events_stream_cache.get_entities_changed(
room_ids, from_id
)
if not room_ids:
defer.returnValue({})
results = {}
room_ids = list(room_ids)
for rm_ids in (room_ids[i:i+20] for i in xrange(0, len(room_ids), 20)):
res = yield defer.gatherResults([
self.get_room_events_stream_for_room(
room_id, from_key, to_key, limit
).addCallback(lambda r, rm: (rm, r), room_id)
for room_id in room_ids
])
results.update(dict(res))
defer.returnValue(results)
@defer.inlineCallbacks
def get_room_events_stream_for_room(self, room_id, from_key, to_key, limit=0):
if from_key is not None:
from_id = RoomStreamToken.parse_stream_token(from_key).stream
else:
from_id = None
to_id = RoomStreamToken.parse_stream_token(to_key).stream
if from_key == to_key:
defer.returnValue(([], from_key))
if from_id:
has_changed = yield self._events_stream_cache.has_entity_changed(
room_id, from_id
)
if not has_changed:
defer.returnValue(([], from_key))
def f(txn):
if from_id is not None:
sql = (
"SELECT event_id, stream_ordering FROM events WHERE"
" room_id = ?"
" AND not outlier"
" AND stream_ordering > ? AND stream_ordering <= ?"
" ORDER BY stream_ordering DESC LIMIT ?"
)
txn.execute(sql, (room_id, from_id, to_id, limit))
else:
sql = (
"SELECT event_id, stream_ordering FROM events WHERE"
" room_id = ?"
" AND not outlier"
" AND stream_ordering <= ?"
" ORDER BY stream_ordering DESC LIMIT ?"
)
txn.execute(sql, (room_id, to_id, limit))
rows = self.cursor_to_dict(txn)
ret = self._get_events_txn(
txn,
[r["event_id"] for r in rows],
get_prev_content=True
)
self._set_before_and_after(ret, rows, topo_order=False)
ret.reverse()
if rows:
key = "s%d" % min(r["stream_ordering"] for r in rows)
else:
# Assume we didn't get anything because there was nothing to
# get.
key = from_key
return ret, key
res = yield self.runInteraction("get_room_events_stream_for_room", f)
defer.returnValue(res)
def get_room_changes_for_user(self, user_id, from_key, to_key):
if from_key is not None:
from_id = RoomStreamToken.parse_stream_token(from_key).stream
else:
from_id = None
to_id = RoomStreamToken.parse_stream_token(to_key).stream
if from_key == to_key:
return defer.succeed([])
def f(txn):
if from_id is not None:
sql = (
"SELECT m.event_id, stream_ordering FROM events AS e,"
" room_memberships AS m"
" WHERE e.event_id = m.event_id"
" AND m.user_id = ?"
" AND e.stream_ordering > ? AND e.stream_ordering <= ?"
" ORDER BY e.stream_ordering ASC"
)
txn.execute(sql, (user_id, from_id, to_id,))
else:
sql = (
"SELECT m.event_id, stream_ordering FROM events AS e,"
" room_memberships AS m"
" WHERE e.event_id = m.event_id"
" AND m.user_id = ?"
" AND stream_ordering <= ?"
" ORDER BY stream_ordering ASC"
)
txn.execute(sql, (user_id, to_id,))
rows = self.cursor_to_dict(txn)
ret = self._get_events_txn(
txn,
[r["event_id"] for r in rows],
get_prev_content=True
)
return ret
return self.runInteraction("get_room_changes_for_user", f)
@log_function
def get_room_events_stream(
self,
@ -174,7 +310,8 @@ class StreamStore(SQLBaseStore):
"SELECT c.room_id FROM history_visibility AS h"
" INNER JOIN current_state_events AS c"
" ON h.event_id = c.event_id"
" WHERE c.room_id IN (%s) AND h.history_visibility = 'world_readable'" % (
" WHERE c.room_id IN (%s)"
" AND h.history_visibility = 'world_readable'" % (
",".join(map(lambda _: "?", room_ids))
)
)
@ -434,6 +571,18 @@ class StreamStore(SQLBaseStore):
row["topological_ordering"], row["stream_ordering"],)
)
def get_max_topological_token_for_stream_and_room(self, room_id, stream_key):
sql = (
"SELECT max(topological_ordering) FROM events"
" WHERE room_id = ? AND stream_ordering < ?"
)
return self._execute(
"get_max_topological_token_for_stream_and_room", None,
sql, room_id, stream_key,
).addCallback(
lambda r: r[0][0] if r else 0
)
def _get_max_topological_txn(self, txn):
txn.execute(
"SELECT MAX(topological_ordering) FROM events"
@ -445,10 +594,13 @@ class StreamStore(SQLBaseStore):
return rows[0][0] if rows else 0
@staticmethod
def _set_before_and_after(events, rows):
def _set_before_and_after(events, rows, topo_order=True):
for event, row in zip(events, rows):
stream = row["stream_ordering"]
topo = event.depth
if topo_order:
topo = event.depth
else:
topo = None
internal = event.internal_metadata
internal.before = str(RoomStreamToken(topo, stream - 1))
internal.after = str(RoomStreamToken(topo, stream))

12
synapse/storage/tags.py
View file

@ -24,7 +24,6 @@ logger = logging.getLogger(__name__)
class TagsStore(SQLBaseStore):
def get_max_account_data_stream_id(self):
"""Get the current max stream id for the private user data stream
@ -80,6 +79,12 @@ class TagsStore(SQLBaseStore):
room_ids = [row[0] for row in txn.fetchall()]
return room_ids
changed = self._account_data_stream_cache.has_entity_changed(
user_id, int(stream_id)
)
if not changed:
defer.returnValue({})
room_ids = yield self.runInteraction(
"get_updated_tags", get_updated_tags_txn
)
@ -177,6 +182,11 @@ class TagsStore(SQLBaseStore):
next_id(int): The the revision to advance to.
"""
txn.call_after(
self._account_data_stream_cache.entity_has_changed,
user_id, next_id
)
update_max_id_sql = (
"UPDATE account_data_max_stream_id"
" SET stream_id = ?"

107
synapse/util/caches/stream_change_cache.py Normal file
View file

@ -0,0 +1,107 @@
# -*- coding: utf-8 -*-
# Copyright 2016 OpenMarket Ltd
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from synapse.util.caches import cache_counter, caches_by_name
from blist import sorteddict
import logging
logger = logging.getLogger(__name__)
class StreamChangeCache(object):
"""Keeps track of the stream positions of the latest change in a set of entities.
Typically the entity will be a room or user id.
Given a list of entities and a stream position, it will give a subset of
entities that may have changed since that position. If position key is too
old then the cache will simply return all given entities.
"""
def __init__(self, name, current_stream_pos, max_size=10000):
self._max_size = max_size
self._entity_to_key = {}
self._cache = sorteddict()
self._earliest_known_stream_pos = current_stream_pos
self.name = name
caches_by_name[self.name] = self._cache
def has_entity_changed(self, entity, stream_pos):
"""Returns True if the entity may have been updated since stream_pos
"""
assert type(stream_pos) is int
if stream_pos < self._earliest_known_stream_pos:
cache_counter.inc_misses(self.name)
return True
if stream_pos == self._earliest_known_stream_pos:
# If the same as the earliest key, assume nothing has changed.
cache_counter.inc_hits(self.name)
return False
latest_entity_change_pos = self._entity_to_key.get(entity, None)
if latest_entity_change_pos is None:
cache_counter.inc_misses(self.name)
return True
if stream_pos < latest_entity_change_pos:
cache_counter.inc_misses(self.name)
return True
cache_counter.inc_hits(self.name)
return False
def get_entities_changed(self, entities, stream_pos):
"""Returns subset of entities that have had new things since the
given position. If the position is too old it will just return the given list.
"""
assert type(stream_pos) is int
if stream_pos >= self._earliest_known_stream_pos:
keys = self._cache.keys()
i = keys.bisect_right(stream_pos)
result = set(
self._cache[k] for k in keys[i:]
).intersection(entities)
cache_counter.inc_hits(self.name)
else:
result = entities
cache_counter.inc_misses(self.name)
return result
def entity_has_changed(self, entity, stream_pos):
"""Informs the cache that the entity has been changed at the given
position.
"""
assert type(stream_pos) is int
if stream_pos > self._earliest_known_stream_pos:
old_pos = self._entity_to_key.get(entity, None)
if old_pos:
stream_pos = max(stream_pos, old_pos)
self._cache.pop(old_pos, None)
self._cache[stream_pos] = entity
self._entity_to_key[entity] = stream_pos
while len(self._cache) > self._max_size:
k, r = self._cache.popitem()
self._earliest_known_stream_pos = max(k, self._earliest_known_stream_pos)
self._entity_to_key.pop(r, None)

9
tests/rest/client/v1/test_rooms.py
View file

@ -1044,13 +1044,6 @@ class RoomMessageListTestCase(RestTestCase):
self.assertTrue("chunk" in response)
self.assertTrue("end" in response)
@defer.inlineCallbacks
def test_stream_token_is_rejected_for_back_pagination(self):
(code, response) = yield self.mock_resource.trigger_get(
"/rooms/%s/messages?access_token=x&from=s0_0_0_0_0&dir=b" %
self.room_id)
self.assertEquals(400, code)
@defer.inlineCallbacks
def test_stream_token_is_accepted_for_fwd_pagianation(self):
token = "s0_0_0_0_0"
@ -1061,4 +1054,4 @@ class RoomMessageListTestCase(RestTestCase):
self.assertTrue("start" in response)
self.assertEquals(token, response['start'])
self.assertTrue("chunk" in response)
self.assertTrue("end" in response)
self.assertTrue("end" in response)