diff --git a/synapse/events/snapshot.py b/synapse/events/snapshot.py
index e9a732ff03..87e3fe7b97 100644
--- a/synapse/events/snapshot.py
+++ b/synapse/events/snapshot.py
@@ -25,7 +25,9 @@ class EventContext(object):
The current state map excluding the current event.
(type, state_key) -> event_id
- state_group (int): state group id
+ state_group (int|None): state group id, if the state has been stored
+ as a state group. This is usually only None if e.g. the event is
+ an outlier.
rejected (bool|str): A rejection reason if the event was rejected, else
False
diff --git a/synapse/handlers/directory.py b/synapse/handlers/directory.py
index a0464ae5c0..8580ada60a 100644
--- a/synapse/handlers/directory.py
+++ b/synapse/handlers/directory.py
@@ -34,6 +34,7 @@ class DirectoryHandler(BaseHandler):
self.state = hs.get_state_handler()
self.appservice_handler = hs.get_application_service_handler()
+ self.event_creation_handler = hs.get_event_creation_handler()
self.federation = hs.get_replication_layer()
self.federation.register_query_handler(
@@ -249,8 +250,7 @@ class DirectoryHandler(BaseHandler):
def send_room_alias_update_event(self, requester, user_id, room_id):
aliases = yield self.store.get_aliases_for_room(room_id)
- msg_handler = self.hs.get_handlers().message_handler
- yield msg_handler.create_and_send_nonmember_event(
+ yield self.event_creation_handler.create_and_send_nonmember_event(
requester,
{
"type": EventTypes.Aliases,
@@ -272,8 +272,7 @@ class DirectoryHandler(BaseHandler):
if not alias_event or alias_event.content.get("alias", "") != alias_str:
return
- msg_handler = self.hs.get_handlers().message_handler
- yield msg_handler.create_and_send_nonmember_event(
+ yield self.event_creation_handler.create_and_send_nonmember_event(
requester,
{
"type": EventTypes.CanonicalAlias,
diff --git a/synapse/handlers/federation.py b/synapse/handlers/federation.py
index 677532c87b..46bcf8b081 100644
--- a/synapse/handlers/federation.py
+++ b/synapse/handlers/federation.py
@@ -1,5 +1,6 @@
# -*- coding: utf-8 -*-
# Copyright 2014-2016 OpenMarket Ltd
+# Copyright 2018 New Vector Ltd
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
@@ -75,6 +76,7 @@ class FederationHandler(BaseHandler):
self.is_mine_id = hs.is_mine_id
self.pusher_pool = hs.get_pusherpool()
self.spam_checker = hs.get_spam_checker()
+ self.event_creation_handler = hs.get_event_creation_handler()
self.replication_layer.set_handler(self)
@@ -808,13 +810,12 @@ class FederationHandler(BaseHandler):
event_ids = list(extremities.keys())
logger.debug("calling resolve_state_groups in _maybe_backfill")
+ resolve = logcontext.preserve_fn(
+ self.state_handler.resolve_state_groups_for_events
+ )
states = yield logcontext.make_deferred_yieldable(defer.gatherResults(
- [
- logcontext.preserve_fn(self.state_handler.resolve_state_groups)(
- room_id, [e]
- )
- for e in event_ids
- ], consumeErrors=True,
+ [resolve(room_id, [e]) for e in event_ids],
+ consumeErrors=True,
))
states = dict(zip(event_ids, [s.state for s in states]))
@@ -1008,8 +1009,7 @@ class FederationHandler(BaseHandler):
})
try:
- message_handler = self.hs.get_handlers().message_handler
- event, context = yield message_handler._create_new_client_event(
+ event, context = yield self.event_creation_handler.create_new_client_event(
builder=builder,
)
except AuthError as e:
@@ -1249,8 +1249,7 @@ class FederationHandler(BaseHandler):
"state_key": user_id,
})
- message_handler = self.hs.get_handlers().message_handler
- event, context = yield message_handler._create_new_client_event(
+ event, context = yield self.event_creation_handler.create_new_client_event(
builder=builder,
)
@@ -1832,8 +1831,8 @@ class FederationHandler(BaseHandler):
current_state = set(e.event_id for e in auth_events.values())
different_auth = event_auth_events - current_state
- self._update_context_for_auth_events(
- context, auth_events, event_key,
+ yield self._update_context_for_auth_events(
+ event, context, auth_events, event_key,
)
if different_auth and not event.internal_metadata.is_outlier():
@@ -1914,8 +1913,8 @@ class FederationHandler(BaseHandler):
# 4. Look at rejects and their proofs.
# TODO.
- self._update_context_for_auth_events(
- context, auth_events, event_key,
+ yield self._update_context_for_auth_events(
+ event, context, auth_events, event_key,
)
try:
@@ -1924,11 +1923,15 @@ class FederationHandler(BaseHandler):
logger.warn("Failed auth resolution for %r because %s", event, e)
raise e
- def _update_context_for_auth_events(self, context, auth_events,
+ @defer.inlineCallbacks
+ def _update_context_for_auth_events(self, event, context, auth_events,
event_key):
- """Update the state_ids in an event context after auth event resolution
+ """Update the state_ids in an event context after auth event resolution,
+ storing the changes as a new state group.
Args:
+ event (Event): The event we're handling the context for
+
context (synapse.events.snapshot.EventContext): event context
to be updated
@@ -1951,7 +1954,13 @@ class FederationHandler(BaseHandler):
context.prev_state_ids.update({
k: a.event_id for k, a in auth_events.iteritems()
})
- context.state_group = self.store.get_next_state_group()
+ context.state_group = yield self.store.store_state_group(
+ event.event_id,
+ event.room_id,
+ prev_group=context.prev_group,
+ delta_ids=context.delta_ids,
+ current_state_ids=context.current_state_ids,
+ )
@defer.inlineCallbacks
def construct_auth_difference(self, local_auth, remote_auth):
@@ -2121,8 +2130,7 @@ class FederationHandler(BaseHandler):
if (yield self.auth.check_host_in_room(room_id, self.hs.hostname)):
builder = self.event_builder_factory.new(event_dict)
EventValidator().validate_new(builder)
- message_handler = self.hs.get_handlers().message_handler
- event, context = yield message_handler._create_new_client_event(
+ event, context = yield self.event_creation_handler.create_new_client_event(
builder=builder
)
@@ -2160,8 +2168,7 @@ class FederationHandler(BaseHandler):
"""
builder = self.event_builder_factory.new(event_dict)
- message_handler = self.hs.get_handlers().message_handler
- event, context = yield message_handler._create_new_client_event(
+ event, context = yield self.event_creation_handler.create_new_client_event(
builder=builder,
)
@@ -2211,8 +2218,9 @@ class FederationHandler(BaseHandler):
builder = self.event_builder_factory.new(event_dict)
EventValidator().validate_new(builder)
- message_handler = self.hs.get_handlers().message_handler
- event, context = yield message_handler._create_new_client_event(builder=builder)
+ event, context = yield self.event_creation_handler.create_new_client_event(
+ builder=builder,
+ )
defer.returnValue((event, context))
@defer.inlineCallbacks
diff --git a/synapse/handlers/message.py b/synapse/handlers/message.py
index 21f1717dd2..4e9752ccbd 100644
--- a/synapse/handlers/message.py
+++ b/synapse/handlers/message.py
@@ -1,6 +1,6 @@
# -*- coding: utf-8 -*-
# Copyright 2014 - 2016 OpenMarket Ltd
-# Copyright 2017 New Vector Ltd
+# Copyright 2017 - 2018 New Vector Ltd
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
@@ -47,23 +47,11 @@ class MessageHandler(BaseHandler):
self.hs = hs
self.state = hs.get_state_handler()
self.clock = hs.get_clock()
- self.validator = EventValidator()
- self.profile_handler = hs.get_profile_handler()
self.pagination_lock = ReadWriteLock()
- self.pusher_pool = hs.get_pusherpool()
-
- # We arbitrarily limit concurrent event creation for a room to 5.
- # This is to stop us from diverging history *too* much.
- self.limiter = Limiter(max_count=5)
-
- self.action_generator = hs.get_action_generator()
-
- self.spam_checker = hs.get_spam_checker()
-
@defer.inlineCallbacks
- def purge_history(self, room_id, event_id):
+ def purge_history(self, room_id, event_id, delete_local_events=False):
event = yield self.store.get_event(event_id)
if event.room_id != room_id:
@@ -72,7 +60,7 @@ class MessageHandler(BaseHandler):
depth = event.depth
with (yield self.pagination_lock.write(room_id)):
- yield self.store.delete_old_state(room_id, depth)
+ yield self.store.purge_history(room_id, depth, delete_local_events)
@defer.inlineCallbacks
def get_messages(self, requester, room_id=None, pagin_config=None,
@@ -183,6 +171,162 @@ class MessageHandler(BaseHandler):
defer.returnValue(chunk)
@defer.inlineCallbacks
+ def get_room_data(self, user_id=None, room_id=None,
+ event_type=None, state_key="", is_guest=False):
+ """ Get data from a room.
+
+ Args:
+ event : The room path event
+ Returns:
+ The path data content.
+ Raises:
+ SynapseError if something went wrong.
+ """
+ membership, membership_event_id = yield self._check_in_room_or_world_readable(
+ room_id, user_id
+ )
+
+ if membership == Membership.JOIN:
+ data = yield self.state_handler.get_current_state(
+ room_id, event_type, state_key
+ )
+ elif membership == Membership.LEAVE:
+ key = (event_type, state_key)
+ room_state = yield self.store.get_state_for_events(
+ [membership_event_id], [key]
+ )
+ data = room_state[membership_event_id].get(key)
+
+ defer.returnValue(data)
+
+ @defer.inlineCallbacks
+ def _check_in_room_or_world_readable(self, room_id, user_id):
+ try:
+ # check_user_was_in_room will return the most recent membership
+ # event for the user if:
+ # * The user is a non-guest user, and was ever in the room
+ # * The user is a guest user, and has joined the room
+ # else it will throw.
+ member_event = yield self.auth.check_user_was_in_room(room_id, user_id)
+ defer.returnValue((member_event.membership, member_event.event_id))
+ return
+ except AuthError:
+ visibility = yield self.state_handler.get_current_state(
+ room_id, EventTypes.RoomHistoryVisibility, ""
+ )
+ if (
+ visibility and
+ visibility.content["history_visibility"] == "world_readable"
+ ):
+ defer.returnValue((Membership.JOIN, None))
+ return
+ raise AuthError(
+ 403, "Guest access not allowed", errcode=Codes.GUEST_ACCESS_FORBIDDEN
+ )
+
+ @defer.inlineCallbacks
+ def get_state_events(self, user_id, room_id, is_guest=False):
+ """Retrieve all state events for a given room. If the user is
+ joined to the room then return the current state. If the user has
+ left the room return the state events from when they left.
+
+ Args:
+ user_id(str): The user requesting state events.
+ room_id(str): The room ID to get all state events from.
+ Returns:
+ A list of dicts representing state events. [{}, {}, {}]
+ """
+ membership, membership_event_id = yield self._check_in_room_or_world_readable(
+ room_id, user_id
+ )
+
+ if membership == Membership.JOIN:
+ room_state = yield self.state_handler.get_current_state(room_id)
+ elif membership == Membership.LEAVE:
+ room_state = yield self.store.get_state_for_events(
+ [membership_event_id], None
+ )
+ room_state = room_state[membership_event_id]
+
+ now = self.clock.time_msec()
+ defer.returnValue(
+ [serialize_event(c, now) for c in room_state.values()]
+ )
+
+ @defer.inlineCallbacks
+ def get_joined_members(self, requester, room_id):
+ """Get all the joined members in the room and their profile information.
+
+ If the user has left the room return the state events from when they left.
+
+ Args:
+ requester(Requester): The user requesting state events.
+ room_id(str): The room ID to get all state events from.
+ Returns:
+ A dict of user_id to profile info
+ """
+ user_id = requester.user.to_string()
+ if not requester.app_service:
+ # We check AS auth after fetching the room membership, as it
+ # requires us to pull out all joined members anyway.
+ membership, _ = yield self._check_in_room_or_world_readable(
+ room_id, user_id
+ )
+ if membership != Membership.JOIN:
+ raise NotImplementedError(
+ "Getting joined members after leaving is not implemented"
+ )
+
+ users_with_profile = yield self.state.get_current_user_in_room(room_id)
+
+ # If this is an AS, double check that they are allowed to see the members.
+ # This can either be because the AS user is in the room or becuase there
+ # is a user in the room that the AS is "interested in"
+ if requester.app_service and user_id not in users_with_profile:
+ for uid in users_with_profile:
+ if requester.app_service.is_interested_in_user(uid):
+ break
+ else:
+ # Loop fell through, AS has no interested users in room
+ raise AuthError(403, "Appservice not in room")
+
+ defer.returnValue({
+ user_id: {
+ "avatar_url": profile.avatar_url,
+ "display_name": profile.display_name,
+ }
+ for user_id, profile in users_with_profile.iteritems()
+ })
+
+
+class EventCreationHandler(object):
+ def __init__(self, hs):
+ self.hs = hs
+ self.auth = hs.get_auth()
+ self.store = hs.get_datastore()
+ self.state = hs.get_state_handler()
+ self.clock = hs.get_clock()
+ self.validator = EventValidator()
+ self.profile_handler = hs.get_profile_handler()
+ self.event_builder_factory = hs.get_event_builder_factory()
+ self.server_name = hs.hostname
+ self.ratelimiter = hs.get_ratelimiter()
+ self.notifier = hs.get_notifier()
+
+ # This is only used to get at ratelimit function, and maybe_kick_guest_users
+ self.base_handler = BaseHandler(hs)
+
+ self.pusher_pool = hs.get_pusherpool()
+
+ # We arbitrarily limit concurrent event creation for a room to 5.
+ # This is to stop us from diverging history *too* much.
+ self.limiter = Limiter(max_count=5)
+
+ self.action_generator = hs.get_action_generator()
+
+ self.spam_checker = hs.get_spam_checker()
+
+ @defer.inlineCallbacks
def create_event(self, requester, event_dict, token_id=None, txn_id=None,
prev_event_ids=None):
"""
@@ -234,7 +378,7 @@ class MessageHandler(BaseHandler):
if txn_id is not None:
builder.internal_metadata.txn_id = txn_id
- event, context = yield self._create_new_client_event(
+ event, context = yield self.create_new_client_event(
builder=builder,
requester=requester,
prev_event_ids=prev_event_ids,
@@ -259,11 +403,6 @@ class MessageHandler(BaseHandler):
"Tried to send member event through non-member codepath"
)
- # We check here if we are currently being rate limited, so that we
- # don't do unnecessary work. We check again just before we actually
- # send the event.
- yield self.ratelimit(requester, update=False)
-
user = UserID.from_string(event.sender)
assert self.hs.is_mine(user), "User must be our own: %s" % (user,)
@@ -342,137 +481,9 @@ class MessageHandler(BaseHandler):
)
defer.returnValue(event)
+ @measure_func("create_new_client_event")
@defer.inlineCallbacks
- def get_room_data(self, user_id=None, room_id=None,
- event_type=None, state_key="", is_guest=False):
- """ Get data from a room.
-
- Args:
- event : The room path event
- Returns:
- The path data content.
- Raises:
- SynapseError if something went wrong.
- """
- membership, membership_event_id = yield self._check_in_room_or_world_readable(
- room_id, user_id
- )
-
- if membership == Membership.JOIN:
- data = yield self.state_handler.get_current_state(
- room_id, event_type, state_key
- )
- elif membership == Membership.LEAVE:
- key = (event_type, state_key)
- room_state = yield self.store.get_state_for_events(
- [membership_event_id], [key]
- )
- data = room_state[membership_event_id].get(key)
-
- defer.returnValue(data)
-
- @defer.inlineCallbacks
- def _check_in_room_or_world_readable(self, room_id, user_id):
- try:
- # check_user_was_in_room will return the most recent membership
- # event for the user if:
- # * The user is a non-guest user, and was ever in the room
- # * The user is a guest user, and has joined the room
- # else it will throw.
- member_event = yield self.auth.check_user_was_in_room(room_id, user_id)
- defer.returnValue((member_event.membership, member_event.event_id))
- return
- except AuthError:
- visibility = yield self.state_handler.get_current_state(
- room_id, EventTypes.RoomHistoryVisibility, ""
- )
- if (
- visibility and
- visibility.content["history_visibility"] == "world_readable"
- ):
- defer.returnValue((Membership.JOIN, None))
- return
- raise AuthError(
- 403, "Guest access not allowed", errcode=Codes.GUEST_ACCESS_FORBIDDEN
- )
-
- @defer.inlineCallbacks
- def get_state_events(self, user_id, room_id, is_guest=False):
- """Retrieve all state events for a given room. If the user is
- joined to the room then return the current state. If the user has
- left the room return the state events from when they left.
-
- Args:
- user_id(str): The user requesting state events.
- room_id(str): The room ID to get all state events from.
- Returns:
- A list of dicts representing state events. [{}, {}, {}]
- """
- membership, membership_event_id = yield self._check_in_room_or_world_readable(
- room_id, user_id
- )
-
- if membership == Membership.JOIN:
- room_state = yield self.state_handler.get_current_state(room_id)
- elif membership == Membership.LEAVE:
- room_state = yield self.store.get_state_for_events(
- [membership_event_id], None
- )
- room_state = room_state[membership_event_id]
-
- now = self.clock.time_msec()
- defer.returnValue(
- [serialize_event(c, now) for c in room_state.values()]
- )
-
- @defer.inlineCallbacks
- def get_joined_members(self, requester, room_id):
- """Get all the joined members in the room and their profile information.
-
- If the user has left the room return the state events from when they left.
-
- Args:
- requester(Requester): The user requesting state events.
- room_id(str): The room ID to get all state events from.
- Returns:
- A dict of user_id to profile info
- """
- user_id = requester.user.to_string()
- if not requester.app_service:
- # We check AS auth after fetching the room membership, as it
- # requires us to pull out all joined members anyway.
- membership, _ = yield self._check_in_room_or_world_readable(
- room_id, user_id
- )
- if membership != Membership.JOIN:
- raise NotImplementedError(
- "Getting joined members after leaving is not implemented"
- )
-
- users_with_profile = yield self.state.get_current_user_in_room(room_id)
-
- # If this is an AS, double check that they are allowed to see the members.
- # This can either be because the AS user is in the room or becuase there
- # is a user in the room that the AS is "interested in"
- if requester.app_service and user_id not in users_with_profile:
- for uid in users_with_profile:
- if requester.app_service.is_interested_in_user(uid):
- break
- else:
- # Loop fell through, AS has no interested users in room
- raise AuthError(403, "Appservice not in room")
-
- defer.returnValue({
- user_id: {
- "avatar_url": profile.avatar_url,
- "display_name": profile.display_name,
- }
- for user_id, profile in users_with_profile.iteritems()
- })
-
- @measure_func("_create_new_client_event")
- @defer.inlineCallbacks
- def _create_new_client_event(self, builder, requester=None, prev_event_ids=None):
+ def create_new_client_event(self, builder, requester=None, prev_event_ids=None):
if prev_event_ids:
prev_events = yield self.store.add_event_hashes(prev_event_ids)
prev_max_depth = yield self.store.get_max_depth_of_events(prev_event_ids)
@@ -509,9 +520,7 @@ class MessageHandler(BaseHandler):
builder.prev_events = prev_events
builder.depth = depth
- state_handler = self.state_handler
-
- context = yield state_handler.compute_event_context(builder)
+ context = yield self.state.compute_event_context(builder)
if requester:
context.app_service = requester.app_service
@@ -551,7 +560,7 @@ class MessageHandler(BaseHandler):
# We now need to go and hit out to wherever we need to hit out to.
if ratelimit:
- yield self.ratelimit(requester)
+ yield self.base_handler.ratelimit(requester)
try:
yield self.auth.check_from_context(event, context)
@@ -567,7 +576,7 @@ class MessageHandler(BaseHandler):
logger.exception("Failed to encode content: %r", event.content)
raise
- yield self.maybe_kick_guest_users(event, context)
+ yield self.base_handler.maybe_kick_guest_users(event, context)
if event.type == EventTypes.CanonicalAlias:
# Check the alias is acually valid (at this time at least)
diff --git a/synapse/handlers/room.py b/synapse/handlers/room.py
index d1cc87a016..6ab020bf41 100644
--- a/synapse/handlers/room.py
+++ b/synapse/handlers/room.py
@@ -1,5 +1,6 @@
# -*- coding: utf-8 -*-
# Copyright 2014 - 2016 OpenMarket Ltd
+# Copyright 2018 New Vector Ltd
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
@@ -64,6 +65,7 @@ class RoomCreationHandler(BaseHandler):
super(RoomCreationHandler, self).__init__(hs)
self.spam_checker = hs.get_spam_checker()
+ self.event_creation_handler = hs.get_event_creation_handler()
@defer.inlineCallbacks
def create_room(self, requester, config, ratelimit=True):
@@ -163,13 +165,11 @@ class RoomCreationHandler(BaseHandler):
creation_content = config.get("creation_content", {})
- msg_handler = self.hs.get_handlers().message_handler
room_member_handler = self.hs.get_handlers().room_member_handler
yield self._send_events_for_new_room(
requester,
room_id,
- msg_handler,
room_member_handler,
preset_config=preset_config,
invite_list=invite_list,
@@ -181,7 +181,7 @@ class RoomCreationHandler(BaseHandler):
if "name" in config:
name = config["name"]
- yield msg_handler.create_and_send_nonmember_event(
+ yield self.event_creation_handler.create_and_send_nonmember_event(
requester,
{
"type": EventTypes.Name,
@@ -194,7 +194,7 @@ class RoomCreationHandler(BaseHandler):
if "topic" in config:
topic = config["topic"]
- yield msg_handler.create_and_send_nonmember_event(
+ yield self.event_creation_handler.create_and_send_nonmember_event(
requester,
{
"type": EventTypes.Topic,
@@ -249,7 +249,6 @@ class RoomCreationHandler(BaseHandler):
self,
creator, # A Requester object.
room_id,
- msg_handler,
room_member_handler,
preset_config,
invite_list,
@@ -272,7 +271,7 @@ class RoomCreationHandler(BaseHandler):
@defer.inlineCallbacks
def send(etype, content, **kwargs):
event = create(etype, content, **kwargs)
- yield msg_handler.create_and_send_nonmember_event(
+ yield self.event_creation_handler.create_and_send_nonmember_event(
creator,
event,
ratelimit=False
diff --git a/synapse/handlers/room_member.py b/synapse/handlers/room_member.py
index 7e6467cd1d..37dc5e99ab 100644
--- a/synapse/handlers/room_member.py
+++ b/synapse/handlers/room_member.py
@@ -1,5 +1,6 @@
# -*- coding: utf-8 -*-
# Copyright 2016 OpenMarket Ltd
+# Copyright 2018 New Vector Ltd
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
@@ -46,6 +47,7 @@ class RoomMemberHandler(BaseHandler):
super(RoomMemberHandler, self).__init__(hs)
self.profile_handler = hs.get_profile_handler()
+ self.event_creation_hander = hs.get_event_creation_handler()
self.member_linearizer = Linearizer(name="member")
@@ -66,13 +68,12 @@ class RoomMemberHandler(BaseHandler):
):
if content is None:
content = {}
- msg_handler = self.hs.get_handlers().message_handler
content["membership"] = membership
if requester.is_guest:
content["kind"] = "guest"
- event, context = yield msg_handler.create_event(
+ event, context = yield self.event_creation_hander.create_event(
requester,
{
"type": EventTypes.Member,
@@ -90,12 +91,14 @@ class RoomMemberHandler(BaseHandler):
)
# Check if this event matches the previous membership event for the user.
- duplicate = yield msg_handler.deduplicate_state_event(event, context)
+ duplicate = yield self.event_creation_hander.deduplicate_state_event(
+ event, context,
+ )
if duplicate is not None:
# Discard the new event since this membership change is a no-op.
defer.returnValue(duplicate)
- yield msg_handler.handle_new_client_event(
+ yield self.event_creation_hander.handle_new_client_event(
requester,
event,
context,
@@ -394,8 +397,9 @@ class RoomMemberHandler(BaseHandler):
else:
requester = synapse.types.create_requester(target_user)
- message_handler = self.hs.get_handlers().message_handler
- prev_event = yield message_handler.deduplicate_state_event(event, context)
+ prev_event = yield self.event_creation_hander.deduplicate_state_event(
+ event, context,
+ )
if prev_event is not None:
return
@@ -412,7 +416,7 @@ class RoomMemberHandler(BaseHandler):
if is_blocked:
raise SynapseError(403, "This room has been blocked on this server")
- yield message_handler.handle_new_client_event(
+ yield self.event_creation_hander.handle_new_client_event(
requester,
event,
context,
@@ -644,8 +648,7 @@ class RoomMemberHandler(BaseHandler):
)
)
- msg_handler = self.hs.get_handlers().message_handler
- yield msg_handler.create_and_send_nonmember_event(
+ yield self.event_creation_hander.create_and_send_nonmember_event(
requester,
{
"type": EventTypes.ThirdPartyInvite,
diff --git a/synapse/http/servlet.py b/synapse/http/servlet.py
index 71420e54db..ef8e62901b 100644
--- a/synapse/http/servlet.py
+++ b/synapse/http/servlet.py
@@ -148,11 +148,13 @@ def parse_string_from_args(args, name, default=None, required=False,
return default
-def parse_json_value_from_request(request):
+def parse_json_value_from_request(request, allow_empty_body=False):
"""Parse a JSON value from the body of a twisted HTTP request.
Args:
request: the twisted HTTP request.
+ allow_empty_body (bool): if True, an empty body will be accepted and
+ turned into None
Returns:
The JSON value.
@@ -165,6 +167,9 @@ def parse_json_value_from_request(request):
except Exception:
raise SynapseError(400, "Error reading JSON content.")
+ if not content_bytes and allow_empty_body:
+ return None
+
try:
content = simplejson.loads(content_bytes)
except Exception as e:
@@ -174,17 +179,24 @@ def parse_json_value_from_request(request):
return content
-def parse_json_object_from_request(request):
+def parse_json_object_from_request(request, allow_empty_body=False):
"""Parse a JSON object from the body of a twisted HTTP request.
Args:
request: the twisted HTTP request.
+ allow_empty_body (bool): if True, an empty body will be accepted and
+ turned into an empty dict.
Raises:
SynapseError if the request body couldn't be decoded as JSON or
if it wasn't a JSON object.
"""
- content = parse_json_value_from_request(request)
+ content = parse_json_value_from_request(
+ request, allow_empty_body=allow_empty_body,
+ )
+
+ if allow_empty_body and content is None:
+ return {}
if type(content) != dict:
message = "Content must be a JSON object."
diff --git a/synapse/metrics/metric.py b/synapse/metrics/metric.py
index 1e783e5ff4..ff5aa8c0e1 100644
--- a/synapse/metrics/metric.py
+++ b/synapse/metrics/metric.py
@@ -193,7 +193,9 @@ class DistributionMetric(object):
class CacheMetric(object):
- __slots__ = ("name", "cache_name", "hits", "misses", "size_callback")
+ __slots__ = (
+ "name", "cache_name", "hits", "misses", "evicted_size", "size_callback",
+ )
def __init__(self, name, size_callback, cache_name):
self.name = name
@@ -201,6 +203,7 @@ class CacheMetric(object):
self.hits = 0
self.misses = 0
+ self.evicted_size = 0
self.size_callback = size_callback
@@ -210,6 +213,9 @@ class CacheMetric(object):
def inc_misses(self):
self.misses += 1
+ def inc_evictions(self, size=1):
+ self.evicted_size += size
+
def render(self):
size = self.size_callback()
hits = self.hits
@@ -219,6 +225,9 @@ class CacheMetric(object):
"""%s:hits{name="%s"} %d""" % (self.name, self.cache_name, hits),
"""%s:total{name="%s"} %d""" % (self.name, self.cache_name, total),
"""%s:size{name="%s"} %d""" % (self.name, self.cache_name, size),
+ """%s:evicted_size{name="%s"} %d""" % (
+ self.name, self.cache_name, self.evicted_size
+ ),
]
diff --git a/synapse/replication/slave/storage/events.py b/synapse/replication/slave/storage/events.py
index 29d7296b43..8acb5df0f3 100644
--- a/synapse/replication/slave/storage/events.py
+++ b/synapse/replication/slave/storage/events.py
@@ -19,7 +19,7 @@ from synapse.storage import DataStore
from synapse.storage.event_federation import EventFederationStore
from synapse.storage.event_push_actions import EventPushActionsStore
from synapse.storage.roommember import RoomMemberStore
-from synapse.storage.state import StateGroupReadStore
+from synapse.storage.state import StateGroupWorkerStore
from synapse.storage.stream import StreamStore
from synapse.util.caches.stream_change_cache import StreamChangeCache
from ._base import BaseSlavedStore
@@ -37,7 +37,7 @@ logger = logging.getLogger(__name__)
# the method descriptor on the DataStore and chuck them into our class.
-class SlavedEventStore(StateGroupReadStore, BaseSlavedStore):
+class SlavedEventStore(StateGroupWorkerStore, BaseSlavedStore):
def __init__(self, db_conn, hs):
super(SlavedEventStore, self).__init__(db_conn, hs)
diff --git a/synapse/rest/client/v1/admin.py b/synapse/rest/client/v1/admin.py
index 5022808ea9..2ad486c67d 100644
--- a/synapse/rest/client/v1/admin.py
+++ b/synapse/rest/client/v1/admin.py
@@ -1,5 +1,6 @@
# -*- coding: utf-8 -*-
# Copyright 2014-2016 OpenMarket Ltd
+# Copyright 2018 New Vector Ltd
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
@@ -128,7 +129,16 @@ class PurgeHistoryRestServlet(ClientV1RestServlet):
if not is_admin:
raise AuthError(403, "You are not a server admin")
- yield self.handlers.message_handler.purge_history(room_id, event_id)
+ body = parse_json_object_from_request(request, allow_empty_body=True)
+
+ delete_local_events = bool(
+ body.get("delete_local_history", False)
+ )
+
+ yield self.handlers.message_handler.purge_history(
+ room_id, event_id,
+ delete_local_events=delete_local_events,
+ )
defer.returnValue((200, {}))
@@ -171,6 +181,7 @@ class ShutdownRoomRestServlet(ClientV1RestServlet):
self.store = hs.get_datastore()
self.handlers = hs.get_handlers()
self.state = hs.get_state_handler()
+ self.event_creation_handler = hs.get_event_creation_handler()
@defer.inlineCallbacks
def on_POST(self, request, room_id):
@@ -203,8 +214,7 @@ class ShutdownRoomRestServlet(ClientV1RestServlet):
)
new_room_id = info["room_id"]
- msg_handler = self.handlers.message_handler
- yield msg_handler.create_and_send_nonmember_event(
+ yield self.event_creation_handler.create_and_send_nonmember_event(
room_creator_requester,
{
"type": "m.room.message",
@@ -289,6 +299,27 @@ class QuarantineMediaInRoom(ClientV1RestServlet):
defer.returnValue((200, {"num_quarantined": num_quarantined}))
+class ListMediaInRoom(ClientV1RestServlet):
+ """Lists all of the media in a given room.
+ """
+ PATTERNS = client_path_patterns("/admin/room/(?P<room_id>[^/]+)/media")
+
+ def __init__(self, hs):
+ super(ListMediaInRoom, self).__init__(hs)
+ self.store = hs.get_datastore()
+
+ @defer.inlineCallbacks
+ def on_GET(self, request, room_id):
+ requester = yield self.auth.get_user_by_req(request)
+ is_admin = yield self.auth.is_server_admin(requester.user)
+ if not is_admin:
+ raise AuthError(403, "You are not a server admin")
+
+ local_mxcs, remote_mxcs = yield self.store.get_media_mxcs_in_room(room_id)
+
+ defer.returnValue((200, {"local": local_mxcs, "remote": remote_mxcs}))
+
+
class ResetPasswordRestServlet(ClientV1RestServlet):
"""Post request to allow an administrator reset password for a user.
This needs user to have administrator access in Synapse.
@@ -487,3 +518,4 @@ def register_servlets(hs, http_server):
SearchUsersRestServlet(hs).register(http_server)
ShutdownRoomRestServlet(hs).register(http_server)
QuarantineMediaInRoom(hs).register(http_server)
+ ListMediaInRoom(hs).register(http_server)
diff --git a/synapse/rest/client/v1/room.py b/synapse/rest/client/v1/room.py
index 867ec8602c..fbb2fc36e4 100644
--- a/synapse/rest/client/v1/room.py
+++ b/synapse/rest/client/v1/room.py
@@ -1,5 +1,6 @@
# -*- coding: utf-8 -*-
# Copyright 2014-2016 OpenMarket Ltd
+# Copyright 2018 New Vector Ltd
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
@@ -82,6 +83,7 @@ class RoomStateEventRestServlet(ClientV1RestServlet):
def __init__(self, hs):
super(RoomStateEventRestServlet, self).__init__(hs)
self.handlers = hs.get_handlers()
+ self.event_creation_hander = hs.get_event_creation_handler()
def register(self, http_server):
# /room/$roomid/state/$eventtype
@@ -162,15 +164,16 @@ class RoomStateEventRestServlet(ClientV1RestServlet):
content=content,
)
else:
- msg_handler = self.handlers.message_handler
- event, context = yield msg_handler.create_event(
+ event, context = yield self.event_creation_hander.create_event(
requester,
event_dict,
token_id=requester.access_token_id,
txn_id=txn_id,
)
- yield msg_handler.send_nonmember_event(requester, event, context)
+ yield self.event_creation_hander.send_nonmember_event(
+ requester, event, context,
+ )
ret = {}
if event:
@@ -184,6 +187,7 @@ class RoomSendEventRestServlet(ClientV1RestServlet):
def __init__(self, hs):
super(RoomSendEventRestServlet, self).__init__(hs)
self.handlers = hs.get_handlers()
+ self.event_creation_hander = hs.get_event_creation_handler()
def register(self, http_server):
# /rooms/$roomid/send/$event_type[/$txn_id]
@@ -205,8 +209,7 @@ class RoomSendEventRestServlet(ClientV1RestServlet):
if 'ts' in request.args and requester.app_service:
event_dict['origin_server_ts'] = parse_integer(request, "ts", 0)
- msg_handler = self.handlers.message_handler
- event = yield msg_handler.create_and_send_nonmember_event(
+ event = yield self.event_creation_hander.create_and_send_nonmember_event(
requester,
event_dict,
txn_id=txn_id,
@@ -670,6 +673,7 @@ class RoomRedactEventRestServlet(ClientV1RestServlet):
def __init__(self, hs):
super(RoomRedactEventRestServlet, self).__init__(hs)
self.handlers = hs.get_handlers()
+ self.event_creation_handler = hs.get_event_creation_handler()
def register(self, http_server):
PATTERNS = ("/rooms/(?P<room_id>[^/]*)/redact/(?P<event_id>[^/]*)")
@@ -680,8 +684,7 @@ class RoomRedactEventRestServlet(ClientV1RestServlet):
requester = yield self.auth.get_user_by_req(request)
content = parse_json_object_from_request(request)
- msg_handler = self.handlers.message_handler
- event = yield msg_handler.create_and_send_nonmember_event(
+ event = yield self.event_creation_handler.create_and_send_nonmember_event(
requester,
{
"type": EventTypes.Redaction,
diff --git a/synapse/rest/media/v1/media_repository.py b/synapse/rest/media/v1/media_repository.py
index 485db8577a..bb79599379 100644
--- a/synapse/rest/media/v1/media_repository.py
+++ b/synapse/rest/media/v1/media_repository.py
@@ -472,8 +472,10 @@ class MediaRepository(object):
@defer.inlineCallbacks
def generate_local_exact_thumbnail(self, media_id, t_width, t_height,
- t_method, t_type):
- input_path = self.filepaths.local_media_filepath(media_id)
+ t_method, t_type, url_cache):
+ input_path = yield self.media_storage.ensure_media_is_in_local_cache(FileInfo(
+ None, media_id, url_cache=url_cache,
+ ))
thumbnailer = Thumbnailer(input_path)
t_byte_source = yield make_deferred_yieldable(threads.deferToThread(
@@ -486,6 +488,7 @@ class MediaRepository(object):
file_info = FileInfo(
server_name=None,
file_id=media_id,
+ url_cache=url_cache,
thumbnail=True,
thumbnail_width=t_width,
thumbnail_height=t_height,
@@ -512,7 +515,9 @@ class MediaRepository(object):
@defer.inlineCallbacks
def generate_remote_exact_thumbnail(self, server_name, file_id, media_id,
t_width, t_height, t_method, t_type):
- input_path = self.filepaths.remote_media_filepath(server_name, file_id)
+ input_path = yield self.media_storage.ensure_media_is_in_local_cache(FileInfo(
+ server_name, file_id, url_cache=False,
+ ))
thumbnailer = Thumbnailer(input_path)
t_byte_source = yield make_deferred_yieldable(threads.deferToThread(
@@ -570,12 +575,9 @@ class MediaRepository(object):
if not requirements:
return
- if server_name:
- input_path = self.filepaths.remote_media_filepath(server_name, file_id)
- elif url_cache:
- input_path = self.filepaths.url_cache_filepath(media_id)
- else:
- input_path = self.filepaths.local_media_filepath(media_id)
+ input_path = yield self.media_storage.ensure_media_is_in_local_cache(FileInfo(
+ server_name, file_id, url_cache=url_cache,
+ ))
thumbnailer = Thumbnailer(input_path)
m_width = thumbnailer.width
diff --git a/synapse/rest/media/v1/media_storage.py b/synapse/rest/media/v1/media_storage.py
index 041ae396cd..3f8d4b9c22 100644
--- a/synapse/rest/media/v1/media_storage.py
+++ b/synapse/rest/media/v1/media_storage.py
@@ -18,6 +18,7 @@ from twisted.protocols.basic import FileSender
from ._base import Responder
+from synapse.util.file_consumer import BackgroundFileConsumer
from synapse.util.logcontext import make_deferred_yieldable
import contextlib
@@ -26,6 +27,7 @@ import logging
import shutil
import sys
+
logger = logging.getLogger(__name__)
@@ -68,6 +70,12 @@ class MediaStorage(object):
_write_file_synchronously, source, fname,
))
+ # Tell the storage providers about the new file. They'll decide
+ # if they should upload it and whether to do so synchronously
+ # or not.
+ for provider in self.storage_providers:
+ yield provider.store_file(path, file_info)
+
defer.returnValue(fname)
@contextlib.contextmanager
@@ -151,6 +159,37 @@ class MediaStorage(object):
defer.returnValue(None)
+ @defer.inlineCallbacks
+ def ensure_media_is_in_local_cache(self, file_info):
+ """Ensures that the given file is in the local cache. Attempts to
+ download it from storage providers if it isn't.
+
+ Args:
+ file_info (FileInfo)
+
+ Returns:
+ Deferred[str]: Full path to local file
+ """
+ path = self._file_info_to_path(file_info)
+ local_path = os.path.join(self.local_media_directory, path)
+ if os.path.exists(local_path):
+ defer.returnValue(local_path)
+
+ dirname = os.path.dirname(local_path)
+ if not os.path.exists(dirname):
+ os.makedirs(dirname)
+
+ for provider in self.storage_providers:
+ res = yield provider.fetch(path, file_info)
+ if res:
+ with res:
+ consumer = BackgroundFileConsumer(open(local_path, "w"))
+ yield res.write_to_consumer(consumer)
+ yield consumer.wait()
+ defer.returnValue(local_path)
+
+ raise Exception("file could not be found")
+
def _file_info_to_path(self, file_info):
"""Converts file_info into a relative path.
@@ -228,9 +267,8 @@ class FileResponder(Responder):
def __init__(self, open_file):
self.open_file = open_file
- @defer.inlineCallbacks
def write_to_consumer(self, consumer):
- yield FileSender().beginFileTransfer(self.open_file, consumer)
+ return FileSender().beginFileTransfer(self.open_file, consumer)
def __exit__(self, exc_type, exc_val, exc_tb):
self.open_file.close()
diff --git a/synapse/rest/media/v1/preview_url_resource.py b/synapse/rest/media/v1/preview_url_resource.py
index 981f01e417..31fe7aa75c 100644
--- a/synapse/rest/media/v1/preview_url_resource.py
+++ b/synapse/rest/media/v1/preview_url_resource.py
@@ -12,6 +12,19 @@
# 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.
+import cgi
+import datetime
+import errno
+import fnmatch
+import itertools
+import logging
+import os
+import re
+import shutil
+import sys
+import traceback
+import ujson as json
+import urlparse
from twisted.web.server import NOT_DONE_YET
from twisted.internet import defer
@@ -33,18 +46,6 @@ from synapse.http.server import (
from synapse.util.async import ObservableDeferred
from synapse.util.stringutils import is_ascii
-import os
-import re
-import fnmatch
-import cgi
-import ujson as json
-import urlparse
-import itertools
-import datetime
-import errno
-import shutil
-
-import logging
logger = logging.getLogger(__name__)
@@ -286,17 +287,28 @@ class PreviewUrlResource(Resource):
url_cache=True,
)
- try:
- with self.media_storage.store_into_file(file_info) as (f, fname, finish):
+ with self.media_storage.store_into_file(file_info) as (f, fname, finish):
+ try:
logger.debug("Trying to get url '%s'" % url)
length, headers, uri, code = yield self.client.get_file(
url, output_stream=f, max_size=self.max_spider_size,
)
+ except Exception as e:
# FIXME: pass through 404s and other error messages nicely
+ logger.warn("Error downloading %s: %r", url, e)
+ raise SynapseError(
+ 500, "Failed to download content: %s" % (
+ traceback.format_exception_only(sys.exc_type, e),
+ ),
+ Codes.UNKNOWN,
+ )
+ yield finish()
- yield finish()
-
- media_type = headers["Content-Type"][0]
+ try:
+ if "Content-Type" in headers:
+ media_type = headers["Content-Type"][0]
+ else:
+ media_type = "application/octet-stream"
time_now_ms = self.clock.time_msec()
content_disposition = headers.get("Content-Disposition", None)
@@ -336,10 +348,11 @@ class PreviewUrlResource(Resource):
)
except Exception as e:
- raise SynapseError(
- 500, ("Failed to download content: %s" % e),
- Codes.UNKNOWN
- )
+ logger.error("Error handling downloaded %s: %r", url, e)
+ # TODO: we really ought to delete the downloaded file in this
+ # case, since we won't have recorded it in the db, and will
+ # therefore not expire it.
+ raise
defer.returnValue({
"media_type": media_type,
diff --git a/synapse/rest/media/v1/thumbnail_resource.py b/synapse/rest/media/v1/thumbnail_resource.py
index 12e84a2b7c..58ada49711 100644
--- a/synapse/rest/media/v1/thumbnail_resource.py
+++ b/synapse/rest/media/v1/thumbnail_resource.py
@@ -164,7 +164,8 @@ class ThumbnailResource(Resource):
# Okay, so we generate one.
file_path = yield self.media_repo.generate_local_exact_thumbnail(
- media_id, desired_width, desired_height, desired_method, desired_type
+ media_id, desired_width, desired_height, desired_method, desired_type,
+ url_cache=media_info["url_cache"],
)
if file_path:
diff --git a/synapse/server.py b/synapse/server.py
index ff8a8fbc46..fbd602d40e 100644
--- a/synapse/server.py
+++ b/synapse/server.py
@@ -55,6 +55,7 @@ from synapse.handlers.read_marker import ReadMarkerHandler
from synapse.handlers.user_directory import UserDirectoryHandler
from synapse.handlers.groups_local import GroupsLocalHandler
from synapse.handlers.profile import ProfileHandler
+from synapse.handlers.message import EventCreationHandler
from synapse.groups.groups_server import GroupsServerHandler
from synapse.groups.attestations import GroupAttestionRenewer, GroupAttestationSigning
from synapse.http.client import SimpleHttpClient, InsecureInterceptableContextFactory
@@ -66,7 +67,7 @@ from synapse.rest.media.v1.media_repository import (
MediaRepository,
MediaRepositoryResource,
)
-from synapse.state import StateHandler
+from synapse.state import StateHandler, StateResolutionHandler
from synapse.storage import DataStore
from synapse.streams.events import EventSources
from synapse.util import Clock
@@ -102,6 +103,7 @@ class HomeServer(object):
'v1auth',
'auth',
'state_handler',
+ 'state_resolution_handler',
'presence_handler',
'sync_handler',
'typing_handler',
@@ -117,6 +119,7 @@ class HomeServer(object):
'application_service_handler',
'device_message_handler',
'profile_handler',
+ 'event_creation_handler',
'deactivate_account_handler',
'set_password_handler',
'notifier',
@@ -224,6 +227,9 @@ class HomeServer(object):
def build_state_handler(self):
return StateHandler(self)
+ def build_state_resolution_handler(self):
+ return StateResolutionHandler(self)
+
def build_presence_handler(self):
return PresenceHandler(self)
@@ -272,6 +278,9 @@ class HomeServer(object):
def build_profile_handler(self):
return ProfileHandler(self)
+ def build_event_creation_handler(self):
+ return EventCreationHandler(self)
+
def build_deactivate_account_handler(self):
return DeactivateAccountHandler(self)
diff --git a/synapse/server.pyi b/synapse/server.pyi
index 41416ef252..c3a9a3847b 100644
--- a/synapse/server.pyi
+++ b/synapse/server.pyi
@@ -34,6 +34,9 @@ class HomeServer(object):
def get_state_handler(self) -> synapse.state.StateHandler:
pass
+ def get_state_resolution_handler(self) -> synapse.state.StateResolutionHandler:
+ pass
+
def get_deactivate_account_handler(self) -> synapse.handlers.deactivate_account.DeactivateAccountHandler:
pass
diff --git a/synapse/state.py b/synapse/state.py
index 4c8247e7c2..cc93bbcb6b 100644
--- a/synapse/state.py
+++ b/synapse/state.py
@@ -58,7 +58,11 @@ class _StateCacheEntry(object):
__slots__ = ["state", "state_group", "state_id", "prev_group", "delta_ids"]
def __init__(self, state, state_group, prev_group=None, delta_ids=None):
+ # dict[(str, str), str] map from (type, state_key) to event_id
self.state = frozendict(state)
+
+ # the ID of a state group if one and only one is involved.
+ # otherwise, None otherwise?
self.state_group = state_group
self.prev_group = prev_group
@@ -81,31 +85,19 @@ class _StateCacheEntry(object):
class StateHandler(object):
- """ Responsible for doing state conflict resolution.
+ """Fetches bits of state from the stores, and does state resolution
+ where necessary
"""
def __init__(self, hs):
self.clock = hs.get_clock()
self.store = hs.get_datastore()
self.hs = hs
-
- # dict of set of event_ids -> _StateCacheEntry.
- self._state_cache = None
- self.resolve_linearizer = Linearizer(name="state_resolve_lock")
+ self._state_resolution_handler = hs.get_state_resolution_handler()
def start_caching(self):
- logger.debug("start_caching")
-
- self._state_cache = ExpiringCache(
- cache_name="state_cache",
- clock=self.clock,
- max_len=SIZE_OF_CACHE,
- expiry_ms=EVICTION_TIMEOUT_SECONDS * 1000,
- iterable=True,
- reset_expiry_on_get=True,
- )
-
- self._state_cache.start()
+ # TODO: remove this shim
+ self._state_resolution_handler.start_caching()
@defer.inlineCallbacks
def get_current_state(self, room_id, event_type=None, state_key="",
@@ -127,7 +119,7 @@ class StateHandler(object):
latest_event_ids = yield self.store.get_latest_event_ids_in_room(room_id)
logger.debug("calling resolve_state_groups from get_current_state")
- ret = yield self.resolve_state_groups(room_id, latest_event_ids)
+ ret = yield self.resolve_state_groups_for_events(room_id, latest_event_ids)
state = ret.state
if event_type:
@@ -164,7 +156,7 @@ class StateHandler(object):
latest_event_ids = yield self.store.get_latest_event_ids_in_room(room_id)
logger.debug("calling resolve_state_groups from get_current_state_ids")
- ret = yield self.resolve_state_groups(room_id, latest_event_ids)
+ ret = yield self.resolve_state_groups_for_events(room_id, latest_event_ids)
state = ret.state
defer.returnValue(state)
@@ -174,7 +166,7 @@ class StateHandler(object):
if not latest_event_ids:
latest_event_ids = yield self.store.get_latest_event_ids_in_room(room_id)
logger.debug("calling resolve_state_groups from get_current_user_in_room")
- entry = yield self.resolve_state_groups(room_id, latest_event_ids)
+ entry = yield self.resolve_state_groups_for_events(room_id, latest_event_ids)
joined_users = yield self.store.get_joined_users_from_state(room_id, entry)
defer.returnValue(joined_users)
@@ -183,7 +175,7 @@ class StateHandler(object):
if not latest_event_ids:
latest_event_ids = yield self.store.get_latest_event_ids_in_room(room_id)
logger.debug("calling resolve_state_groups from get_current_hosts_in_room")
- entry = yield self.resolve_state_groups(room_id, latest_event_ids)
+ entry = yield self.resolve_state_groups_for_events(room_id, latest_event_ids)
joined_hosts = yield self.store.get_joined_hosts(room_id, entry)
defer.returnValue(joined_hosts)
@@ -191,8 +183,15 @@ class StateHandler(object):
def compute_event_context(self, event, old_state=None):
"""Build an EventContext structure for the event.
+ This works out what the current state should be for the event, and
+ generates a new state group if necessary.
+
Args:
event (synapse.events.EventBase):
+ old_state (dict|None): The state at the event if it can't be
+ calculated from existing events. This is normally only specified
+ when receiving an event from federation where we don't have the
+ prev events for, e.g. when backfilling.
Returns:
synapse.events.snapshot.EventContext:
"""
@@ -216,15 +215,22 @@ class StateHandler(object):
context.current_state_ids = {}
context.prev_state_ids = {}
context.prev_state_events = []
- context.state_group = self.store.get_next_state_group()
+
+ # We don't store state for outliers, so we don't generate a state
+ # froup for it.
+ context.state_group = None
+
defer.returnValue(context)
if old_state:
+ # We already have the state, so we don't need to calculate it.
+ # Let's just correctly fill out the context and create a
+ # new state group for it.
+
context = EventContext()
context.prev_state_ids = {
(s.type, s.state_key): s.event_id for s in old_state
}
- context.state_group = self.store.get_next_state_group()
if event.is_state():
key = (event.type, event.state_key)
@@ -237,11 +243,19 @@ class StateHandler(object):
else:
context.current_state_ids = context.prev_state_ids
+ context.state_group = yield self.store.store_state_group(
+ event.event_id,
+ event.room_id,
+ prev_group=None,
+ delta_ids=None,
+ current_state_ids=context.current_state_ids,
+ )
+
context.prev_state_events = []
defer.returnValue(context)
logger.debug("calling resolve_state_groups from compute_event_context")
- entry = yield self.resolve_state_groups(
+ entry = yield self.resolve_state_groups_for_events(
event.room_id, [e for e, _ in event.prev_events],
)
@@ -250,7 +264,8 @@ class StateHandler(object):
context = EventContext()
context.prev_state_ids = curr_state
if event.is_state():
- context.state_group = self.store.get_next_state_group()
+ # If this is a state event then we need to create a new state
+ # group for the state after this event.
key = (event.type, event.state_key)
if key in context.prev_state_ids:
@@ -261,38 +276,57 @@ class StateHandler(object):
context.current_state_ids[key] = event.event_id
if entry.state_group:
+ # If the state at the event has a state group assigned then
+ # we can use that as the prev group
context.prev_group = entry.state_group
context.delta_ids = {
key: event.event_id
}
elif entry.prev_group:
+ # If the state at the event only has a prev group, then we can
+ # use that as a prev group too.
context.prev_group = entry.prev_group
context.delta_ids = dict(entry.delta_ids)
context.delta_ids[key] = event.event_id
+
+ context.state_group = yield self.store.store_state_group(
+ event.event_id,
+ event.room_id,
+ prev_group=context.prev_group,
+ delta_ids=context.delta_ids,
+ current_state_ids=context.current_state_ids,
+ )
else:
+ context.current_state_ids = context.prev_state_ids
+ context.prev_group = entry.prev_group
+ context.delta_ids = entry.delta_ids
+
if entry.state_group is None:
- entry.state_group = self.store.get_next_state_group()
+ entry.state_group = yield self.store.store_state_group(
+ event.event_id,
+ event.room_id,
+ prev_group=entry.prev_group,
+ delta_ids=entry.delta_ids,
+ current_state_ids=context.current_state_ids,
+ )
entry.state_id = entry.state_group
context.state_group = entry.state_group
- context.current_state_ids = context.prev_state_ids
- context.prev_group = entry.prev_group
- context.delta_ids = entry.delta_ids
context.prev_state_events = []
defer.returnValue(context)
@defer.inlineCallbacks
- @log_function
- def resolve_state_groups(self, room_id, event_ids):
+ def resolve_state_groups_for_events(self, room_id, event_ids):
""" Given a list of event_ids this method fetches the state at each
event, resolves conflicts between them and returns them.
+ Args:
+ room_id (str):
+ event_ids (list[str]):
+
Returns:
- a Deferred tuple of (`state_group`, `state`, `prev_state`).
- `state_group` is the name of a state group if one and only one is
- involved. `state` is a map from (type, state_key) to event, and
- `prev_state` is a list of event ids.
+ Deferred[_StateCacheEntry]: resolved state
"""
logger.debug("resolve_state_groups event_ids %s", event_ids)
@@ -303,13 +337,7 @@ class StateHandler(object):
room_id, event_ids
)
- logger.debug(
- "resolve_state_groups state_groups %s",
- state_groups_ids.keys()
- )
-
- group_names = frozenset(state_groups_ids.keys())
- if len(group_names) == 1:
+ if len(state_groups_ids) == 1:
name, state_list = state_groups_ids.items().pop()
prev_group, delta_ids = yield self.store.get_state_group_delta(name)
@@ -321,6 +349,92 @@ class StateHandler(object):
delta_ids=delta_ids,
))
+ result = yield self._state_resolution_handler.resolve_state_groups(
+ room_id, state_groups_ids, self._state_map_factory,
+ )
+ defer.returnValue(result)
+
+ def _state_map_factory(self, ev_ids):
+ return self.store.get_events(
+ ev_ids, get_prev_content=False, check_redacted=False,
+ )
+
+ def resolve_events(self, state_sets, event):
+ logger.info(
+ "Resolving state for %s with %d groups", event.room_id, len(state_sets)
+ )
+ state_set_ids = [{
+ (ev.type, ev.state_key): ev.event_id
+ for ev in st
+ } for st in state_sets]
+
+ state_map = {
+ ev.event_id: ev
+ for st in state_sets
+ for ev in st
+ }
+
+ with Measure(self.clock, "state._resolve_events"):
+ new_state = resolve_events_with_state_map(state_set_ids, state_map)
+
+ new_state = {
+ key: state_map[ev_id] for key, ev_id in new_state.items()
+ }
+
+ return new_state
+
+
+class StateResolutionHandler(object):
+ """Responsible for doing state conflict resolution.
+
+ Note that the storage layer depends on this handler, so all functions must
+ be storage-independent.
+ """
+ def __init__(self, hs):
+ self.clock = hs.get_clock()
+
+ # dict of set of event_ids -> _StateCacheEntry.
+ self._state_cache = None
+ self.resolve_linearizer = Linearizer(name="state_resolve_lock")
+
+ def start_caching(self):
+ logger.debug("start_caching")
+
+ self._state_cache = ExpiringCache(
+ cache_name="state_cache",
+ clock=self.clock,
+ max_len=SIZE_OF_CACHE,
+ expiry_ms=EVICTION_TIMEOUT_SECONDS * 1000,
+ iterable=True,
+ reset_expiry_on_get=True,
+ )
+
+ self._state_cache.start()
+
+ @defer.inlineCallbacks
+ @log_function
+ def resolve_state_groups(self, room_id, state_groups_ids, state_map_factory):
+ """Resolves conflicts between a set of state groups
+
+ Always generates a new state group (unless we hit the cache), so should
+ not be called for a single state group
+
+ Args:
+ room_id (str): room we are resolving for (used for logging)
+ state_groups_ids (dict[int, dict[(str, str), str]]):
+ map from state group id to the state in that state group
+ (where 'state' is a map from state key to event id)
+
+ Returns:
+ Deferred[_StateCacheEntry]: resolved state
+ """
+ logger.debug(
+ "resolve_state_groups state_groups %s",
+ state_groups_ids.keys()
+ )
+
+ group_names = frozenset(state_groups_ids.keys())
+
with (yield self.resolve_linearizer.queue(group_names)):
if self._state_cache is not None:
cache = self._state_cache.get(group_names, None)
@@ -351,15 +465,17 @@ class StateHandler(object):
with Measure(self.clock, "state._resolve_events"):
new_state = yield resolve_events_with_factory(
state_groups_ids.values(),
- state_map_factory=lambda ev_ids: self.store.get_events(
- ev_ids, get_prev_content=False, check_redacted=False,
- ),
+ state_map_factory=state_map_factory,
)
else:
new_state = {
key: e_ids.pop() for key, e_ids in state.items()
}
+ # if the new state matches any of the input state groups, we can
+ # use that state group again. Otherwise we will generate a state_id
+ # which will be used as a cache key for future resolutions, but
+ # not get persisted.
state_group = None
new_state_event_ids = frozenset(new_state.values())
for sg, events in state_groups_ids.items():
@@ -396,30 +512,6 @@ class StateHandler(object):
defer.returnValue(cache)
- def resolve_events(self, state_sets, event):
- logger.info(
- "Resolving state for %s with %d groups", event.room_id, len(state_sets)
- )
- state_set_ids = [{
- (ev.type, ev.state_key): ev.event_id
- for ev in st
- } for st in state_sets]
-
- state_map = {
- ev.event_id: ev
- for st in state_sets
- for ev in st
- }
-
- with Measure(self.clock, "state._resolve_events"):
- new_state = resolve_events_with_state_map(state_set_ids, state_map)
-
- new_state = {
- key: state_map[ev_id] for key, ev_id in new_state.items()
- }
-
- return new_state
-
def _ordered_events(events):
def key_func(e):
@@ -437,8 +529,8 @@ def resolve_events_with_state_map(state_sets, state_map):
state_sets.
Returns
- dict[(str, str), synapse.events.FrozenEvent]:
- a map from (type, state_key) to event.
+ dict[(str, str), str]:
+ a map from (type, state_key) to event_id.
"""
if len(state_sets) == 1:
return state_sets[0]
@@ -460,6 +552,21 @@ def _seperate(state_sets):
"""Takes the state_sets and figures out which keys are conflicted and
which aren't. i.e., which have multiple different event_ids associated
with them in different state sets.
+
+ Args:
+ state_sets(list[dict[(str, str), str]]):
+ List of dicts of (type, state_key) -> event_id, which are the
+ different state groups to resolve.
+
+ Returns:
+ (dict[(str, str), str], dict[(str, str), set[str]]):
+ A tuple of (unconflicted_state, conflicted_state), where:
+
+ unconflicted_state is a dict mapping (type, state_key)->event_id
+ for unconflicted state keys.
+
+ conflicted_state is a dict mapping (type, state_key) to a set of
+ event ids for conflicted state keys.
"""
unconflicted_state = dict(state_sets[0])
conflicted_state = {}
@@ -500,8 +607,8 @@ def resolve_events_with_factory(state_sets, state_map_factory):
a Deferred of dict of event_id to event.
Returns
- Deferred[dict[(str, str), synapse.events.FrozenEvent]]:
- a map from (type, state_key) to event.
+ Deferred[dict[(str, str), str]]:
+ a map from (type, state_key) to event_id.
"""
if len(state_sets) == 1:
defer.returnValue(state_sets[0])
diff --git a/synapse/storage/__init__.py b/synapse/storage/__init__.py
index d01d46338a..f8fbd02ceb 100644
--- a/synapse/storage/__init__.py
+++ b/synapse/storage/__init__.py
@@ -124,7 +124,6 @@ class DataStore(RoomMemberStore, RoomStore,
)
self._transaction_id_gen = IdGenerator(db_conn, "sent_transactions", "id")
- self._state_groups_id_gen = IdGenerator(db_conn, "state_groups", "id")
self._access_tokens_id_gen = IdGenerator(db_conn, "access_tokens", "id")
self._event_reports_id_gen = IdGenerator(db_conn, "event_reports", "id")
self._push_rule_id_gen = IdGenerator(db_conn, "push_rules", "id")
diff --git a/synapse/storage/engines/postgres.py b/synapse/storage/engines/postgres.py
index a6ae79dfad..8a0386c1a4 100644
--- a/synapse/storage/engines/postgres.py
+++ b/synapse/storage/engines/postgres.py
@@ -62,3 +62,9 @@ class PostgresEngine(object):
def lock_table(self, txn, table):
txn.execute("LOCK TABLE %s in EXCLUSIVE MODE" % (table,))
+
+ def get_next_state_group_id(self, txn):
+ """Returns an int that can be used as a new state_group ID
+ """
+ txn.execute("SELECT nextval('state_group_id_seq')")
+ return txn.fetchone()[0]
diff --git a/synapse/storage/engines/sqlite3.py b/synapse/storage/engines/sqlite3.py
index 755c9a1f07..60f0fa7fb3 100644
--- a/synapse/storage/engines/sqlite3.py
+++ b/synapse/storage/engines/sqlite3.py
@@ -16,6 +16,7 @@
from synapse.storage.prepare_database import prepare_database
import struct
+import threading
class Sqlite3Engine(object):
@@ -24,6 +25,11 @@ class Sqlite3Engine(object):
def __init__(self, database_module, database_config):
self.module = database_module
+ # The current max state_group, or None if we haven't looked
+ # in the DB yet.
+ self._current_state_group_id = None
+ self._current_state_group_id_lock = threading.Lock()
+
def check_database(self, txn):
pass
@@ -43,6 +49,19 @@ class Sqlite3Engine(object):
def lock_table(self, txn, table):
return
+ def get_next_state_group_id(self, txn):
+ """Returns an int that can be used as a new state_group ID
+ """
+ # We do application locking here since if we're using sqlite then
+ # we are a single process synapse.
+ with self._current_state_group_id_lock:
+ if self._current_state_group_id is None:
+ txn.execute("SELECT COALESCE(max(id), 0) FROM state_groups")
+ self._current_state_group_id = txn.fetchone()[0]
+
+ self._current_state_group_id += 1
+ return self._current_state_group_id
+
# Following functions taken from: https://github.com/coleifer/peewee
diff --git a/synapse/storage/events.py b/synapse/storage/events.py
index 33fccfa7a8..86a7c5920d 100644
--- a/synapse/storage/events.py
+++ b/synapse/storage/events.py
@@ -342,8 +342,20 @@ class EventsStore(SQLBaseStore):
# NB: Assumes that we are only persisting events for one room
# at a time.
+
+ # map room_id->list[event_ids] giving the new forward
+ # extremities in each room
new_forward_extremeties = {}
+
+ # map room_id->(type,state_key)->event_id tracking the full
+ # state in each room after adding these events
current_state_for_room = {}
+
+ # map room_id->(to_delete, to_insert) where each entry is
+ # a map (type,key)->event_id giving the state delta in each
+ # room
+ state_delta_for_room = {}
+
if not backfilled:
with Measure(self._clock, "_calculate_state_and_extrem"):
# Work out the new "current state" for each room.
@@ -386,11 +398,19 @@ class EventsStore(SQLBaseStore):
if all_single_prev_not_state:
continue
- state = yield self._calculate_state_delta(
- room_id, ev_ctx_rm, new_latest_event_ids
+ logger.info(
+ "Calculating state delta for room %s", room_id,
+ )
+ current_state = yield self._get_new_state_after_events(
+ ev_ctx_rm, new_latest_event_ids,
)
- if state:
- current_state_for_room[room_id] = state
+ if current_state is not None:
+ current_state_for_room[room_id] = current_state
+ delta = yield self._calculate_state_delta(
+ room_id, current_state,
+ )
+ if delta is not None:
+ state_delta_for_room[room_id] = delta
yield self.runInteraction(
"persist_events",
@@ -398,7 +418,7 @@ class EventsStore(SQLBaseStore):
events_and_contexts=chunk,
backfilled=backfilled,
delete_existing=delete_existing,
- current_state_for_room=current_state_for_room,
+ state_delta_for_room=state_delta_for_room,
new_forward_extremeties=new_forward_extremeties,
)
persist_event_counter.inc_by(len(chunk))
@@ -415,7 +435,7 @@ class EventsStore(SQLBaseStore):
event_counter.inc(event.type, origin_type, origin_entity)
- for room_id, (_, _, new_state) in current_state_for_room.iteritems():
+ for room_id, new_state in current_state_for_room.iteritems():
self.get_current_state_ids.prefill(
(room_id, ), new_state
)
@@ -467,20 +487,22 @@ class EventsStore(SQLBaseStore):
defer.returnValue(new_latest_event_ids)
@defer.inlineCallbacks
- def _calculate_state_delta(self, room_id, events_context, new_latest_event_ids):
- """Calculate the new state deltas for a room.
+ def _get_new_state_after_events(self, events_context, new_latest_event_ids):
+ """Calculate the current state dict after adding some new events to
+ a room
- Assumes that we are only persisting events for one room at a time.
+ Args:
+ events_context (list[(EventBase, EventContext)]):
+ events and contexts which are being added to the room
+
+ new_latest_event_ids (iterable[str]):
+ the new forward extremities for the room.
Returns:
- 3-tuple (to_delete, to_insert, new_state) where both are state dicts,
- i.e. (type, state_key) -> event_id. `to_delete` are the entries to
- first be deleted from current_state_events, `to_insert` are entries
- to insert. `new_state` is the full set of state.
- May return None if there are no changes to be applied.
+ Deferred[dict[(str,str), str]|None]:
+ None if there are no changes to the room state, or
+ a dict of (type, state_key) -> event_id].
"""
- # Now we need to work out the different state sets for
- # each state extremities
state_sets = []
state_groups = set()
missing_event_ids = []
@@ -523,12 +545,12 @@ class EventsStore(SQLBaseStore):
state_sets.extend(group_to_state.itervalues())
if not new_latest_event_ids:
- current_state = {}
+ defer.returnValue({})
elif was_updated:
if len(state_sets) == 1:
# If there is only one state set, then we know what the current
# state is.
- current_state = state_sets[0]
+ defer.returnValue(state_sets[0])
else:
# We work out the current state by passing the state sets to the
# state resolution algorithm. It may ask for some events, including
@@ -537,8 +559,7 @@ class EventsStore(SQLBaseStore):
# up in the db.
logger.info(
- "Resolving state for %s with %i state sets",
- room_id, len(state_sets),
+ "Resolving state with %i state sets", len(state_sets),
)
events_map = {ev.event_id: ev for ev, _ in events_context}
@@ -567,9 +588,22 @@ class EventsStore(SQLBaseStore):
state_sets,
state_map_factory=get_events,
)
+ defer.returnValue(current_state)
else:
return
+ @defer.inlineCallbacks
+ def _calculate_state_delta(self, room_id, current_state):
+ """Calculate the new state deltas for a room.
+
+ Assumes that we are only persisting events for one room at a time.
+
+ Returns:
+ 2-tuple (to_delete, to_insert) where both are state dicts,
+ i.e. (type, state_key) -> event_id. `to_delete` are the entries to
+ first be deleted from current_state_events, `to_insert` are entries
+ to insert.
+ """
existing_state = yield self.get_current_state_ids(room_id)
existing_events = set(existing_state.itervalues())
@@ -589,7 +623,7 @@ class EventsStore(SQLBaseStore):
if ev_id in events_to_insert
}
- defer.returnValue((to_delete, to_insert, current_state))
+ defer.returnValue((to_delete, to_insert))
@defer.inlineCallbacks
def get_event(self, event_id, check_redacted=True,
@@ -649,7 +683,7 @@ class EventsStore(SQLBaseStore):
@log_function
def _persist_events_txn(self, txn, events_and_contexts, backfilled,
- delete_existing=False, current_state_for_room={},
+ delete_existing=False, state_delta_for_room={},
new_forward_extremeties={}):
"""Insert some number of room events into the necessary database tables.
@@ -665,7 +699,7 @@ class EventsStore(SQLBaseStore):
delete_existing (bool): True to purge existing table rows for the
events from the database. This is useful when retrying due to
IntegrityError.
- current_state_for_room (dict[str, (list[str], list[str])]):
+ state_delta_for_room (dict[str, (list[str], list[str])]):
The current-state delta for each room. For each room, a tuple
(to_delete, to_insert), being a list of event ids to be removed
from the current state, and a list of event ids to be added to
@@ -677,7 +711,7 @@ class EventsStore(SQLBaseStore):
"""
max_stream_order = events_and_contexts[-1][0].internal_metadata.stream_ordering
- self._update_current_state_txn(txn, current_state_for_room, max_stream_order)
+ self._update_current_state_txn(txn, state_delta_for_room, max_stream_order)
self._update_forward_extremities_txn(
txn,
@@ -721,9 +755,8 @@ class EventsStore(SQLBaseStore):
events_and_contexts=events_and_contexts,
)
- # Insert into the state_groups, state_groups_state, and
- # event_to_state_groups tables.
- self._store_mult_state_groups_txn(txn, events_and_contexts)
+ # Insert into event_to_state_groups.
+ self._store_event_state_mappings_txn(txn, events_and_contexts)
# _store_rejected_events_txn filters out any events which were
# rejected, and returns the filtered list.
@@ -743,7 +776,7 @@ class EventsStore(SQLBaseStore):
def _update_current_state_txn(self, txn, state_delta_by_room, max_stream_order):
for room_id, current_state_tuple in state_delta_by_room.iteritems():
- to_delete, to_insert, _ = current_state_tuple
+ to_delete, to_insert = current_state_tuple
txn.executemany(
"DELETE FROM current_state_events WHERE event_id = ?",
[(ev_id,) for ev_id in to_delete.itervalues()],
@@ -958,10 +991,9 @@ class EventsStore(SQLBaseStore):
# an outlier in the database. We now have some state at that
# so we need to update the state_groups table with that state.
- # insert into the state_group, state_groups_state and
- # event_to_state_groups tables.
+ # insert into event_to_state_groups.
try:
- self._store_mult_state_groups_txn(txn, ((event, context),))
+ self._store_event_state_mappings_txn(txn, ((event, context),))
except Exception:
logger.exception("")
raise
@@ -2031,16 +2063,32 @@ class EventsStore(SQLBaseStore):
)
return self.runInteraction("get_all_new_events", get_all_new_events_txn)
- def delete_old_state(self, room_id, topological_ordering):
- return self.runInteraction(
- "delete_old_state",
- self._delete_old_state_txn, room_id, topological_ordering
- )
+ def purge_history(
+ self, room_id, topological_ordering, delete_local_events,
+ ):
+ """Deletes room history before a certain point
+
+ Args:
+ room_id (str):
+
+ topological_ordering (int):
+ minimum topo ordering to preserve
- def _delete_old_state_txn(self, txn, room_id, topological_ordering):
- """Deletes old room state
+ delete_local_events (bool):
+ if True, we will delete local events as well as remote ones
+ (instead of just marking them as outliers and deleting their
+ state groups).
"""
+ return self.runInteraction(
+ "purge_history",
+ self._purge_history_txn, room_id, topological_ordering,
+ delete_local_events,
+ )
+
+ def _purge_history_txn(
+ self, txn, room_id, topological_ordering, delete_local_events,
+ ):
# Tables that should be pruned:
# event_auth
# event_backward_extremities
@@ -2081,7 +2129,7 @@ class EventsStore(SQLBaseStore):
400, "topological_ordering is greater than forward extremeties"
)
- logger.debug("[purge] looking for events to delete")
+ logger.info("[purge] looking for events to delete")
txn.execute(
"SELECT event_id, state_key FROM events"
@@ -2093,16 +2141,16 @@ class EventsStore(SQLBaseStore):
to_delete = [
(event_id,) for event_id, state_key in event_rows
- if state_key is None and not self.hs.is_mine_id(event_id)
+ if state_key is None and (
+ delete_local_events or not self.hs.is_mine_id(event_id)
+ )
]
logger.info(
- "[purge] found %i events before cutoff, of which %i are remote"
- " non-state events to delete", len(event_rows), len(to_delete))
-
- for event_id, state_key in event_rows:
- txn.call_after(self._get_state_group_for_event.invalidate, (event_id,))
+ "[purge] found %i events before cutoff, of which %i can be deleted",
+ len(event_rows), len(to_delete),
+ )
- logger.debug("[purge] Finding new backward extremities")
+ logger.info("[purge] Finding new backward extremities")
# We calculate the new entries for the backward extremeties by finding
# all events that point to events that are to be purged
@@ -2116,7 +2164,7 @@ class EventsStore(SQLBaseStore):
)
new_backwards_extrems = txn.fetchall()
- logger.debug("[purge] replacing backward extremities: %r", new_backwards_extrems)
+ logger.info("[purge] replacing backward extremities: %r", new_backwards_extrems)
txn.execute(
"DELETE FROM event_backward_extremities WHERE room_id = ?",
@@ -2132,7 +2180,7 @@ class EventsStore(SQLBaseStore):
]
)
- logger.debug("[purge] finding redundant state groups")
+ logger.info("[purge] finding redundant state groups")
# Get all state groups that are only referenced by events that are
# to be deleted.
@@ -2149,15 +2197,15 @@ class EventsStore(SQLBaseStore):
)
state_rows = txn.fetchall()
- logger.debug("[purge] found %i redundant state groups", len(state_rows))
+ logger.info("[purge] found %i redundant state groups", len(state_rows))
# make a set of the redundant state groups, so that we can look them up
# efficiently
state_groups_to_delete = set([sg for sg, in state_rows])
# Now we get all the state groups that rely on these state groups
- logger.debug("[purge] finding state groups which depend on redundant"
- " state groups")
+ logger.info("[purge] finding state groups which depend on redundant"
+ " state groups")
remaining_state_groups = []
for i in xrange(0, len(state_rows), 100):
chunk = [sg for sg, in state_rows[i:i + 100]]
@@ -2182,7 +2230,7 @@ class EventsStore(SQLBaseStore):
# Now we turn the state groups that reference to-be-deleted state
# groups to non delta versions.
for sg in remaining_state_groups:
- logger.debug("[purge] de-delta-ing remaining state group %s", sg)
+ logger.info("[purge] de-delta-ing remaining state group %s", sg)
curr_state = self._get_state_groups_from_groups_txn(
txn, [sg], types=None
)
@@ -2219,7 +2267,7 @@ class EventsStore(SQLBaseStore):
],
)
- logger.debug("[purge] removing redundant state groups")
+ logger.info("[purge] removing redundant state groups")
txn.executemany(
"DELETE FROM state_groups_state WHERE state_group = ?",
state_rows
@@ -2229,18 +2277,15 @@ class EventsStore(SQLBaseStore):
state_rows
)
- # Delete all non-state
- logger.debug("[purge] removing events from event_to_state_groups")
+ logger.info("[purge] removing events from event_to_state_groups")
txn.executemany(
"DELETE FROM event_to_state_groups WHERE event_id = ?",
[(event_id,) for event_id, _ in event_rows]
)
-
- logger.debug("[purge] updating room_depth")
- txn.execute(
- "UPDATE room_depth SET min_depth = ? WHERE room_id = ?",
- (topological_ordering, room_id,)
- )
+ for event_id, _ in event_rows:
+ txn.call_after(self._get_state_group_for_event.invalidate, (
+ event_id,
+ ))
# Delete all remote non-state events
for table in (
@@ -2258,7 +2303,8 @@ class EventsStore(SQLBaseStore):
"event_signatures",
"rejections",
):
- logger.debug("[purge] removing remote non-state events from %s", table)
+ logger.info("[purge] removing remote non-state events from %s",
+ table)
txn.executemany(
"DELETE FROM %s WHERE event_id = ?" % (table,),
@@ -2266,16 +2312,30 @@ class EventsStore(SQLBaseStore):
)
# Mark all state and own events as outliers
- logger.debug("[purge] marking remaining events as outliers")
+ logger.info("[purge] marking remaining events as outliers")
txn.executemany(
"UPDATE events SET outlier = ?"
" WHERE event_id = ?",
[
(True, event_id,) for event_id, state_key in event_rows
- if state_key is not None or self.hs.is_mine_id(event_id)
+ if state_key is not None or (
+ not delete_local_events and self.hs.is_mine_id(event_id)
+ )
]
)
+ # synapse tries to take out an exclusive lock on room_depth whenever it
+ # persists events (because upsert), and once we run this update, we
+ # will block that for the rest of our transaction.
+ #
+ # So, let's stick it at the end so that we don't block event
+ # persistence.
+ logger.info("[purge] updating room_depth")
+ txn.execute(
+ "UPDATE room_depth SET min_depth = ? WHERE room_id = ?",
+ (topological_ordering, room_id,)
+ )
+
logger.info("[purge] done")
@defer.inlineCallbacks
diff --git a/synapse/storage/room.py b/synapse/storage/room.py
index 0fcfb7f86d..fff6652e05 100644
--- a/synapse/storage/room.py
+++ b/synapse/storage/room.py
@@ -506,73 +506,114 @@ class RoomStore(SearchStore):
)
self.is_room_blocked.invalidate((room_id,))
+ def get_media_mxcs_in_room(self, room_id):
+ """Retrieves all the local and remote media MXC URIs in a given room
+
+ Args:
+ room_id (str)
+
+ Returns:
+ The local and remote media as a lists of tuples where the key is
+ the hostname and the value is the media ID.
+ """
+ def _get_media_mxcs_in_room_txn(txn):
+ local_mxcs, remote_mxcs = self._get_media_mxcs_in_room_txn(txn, room_id)
+ local_media_mxcs = []
+ remote_media_mxcs = []
+
+ # Convert the IDs to MXC URIs
+ for media_id in local_mxcs:
+ local_media_mxcs.append("mxc://%s/%s" % (self.hostname, media_id))
+ for hostname, media_id in remote_mxcs:
+ remote_media_mxcs.append("mxc://%s/%s" % (hostname, media_id))
+
+ return local_media_mxcs, remote_media_mxcs
+ return self.runInteraction("get_media_ids_in_room", _get_media_mxcs_in_room_txn)
+
def quarantine_media_ids_in_room(self, room_id, quarantined_by):
"""For a room loops through all events with media and quarantines
the associated media
"""
- def _get_media_ids_in_room(txn):
- mxc_re = re.compile("^mxc://([^/]+)/([^/#?]+)")
+ def _quarantine_media_in_room_txn(txn):
+ local_mxcs, remote_mxcs = self._get_media_mxcs_in_room_txn(txn, room_id)
+ total_media_quarantined = 0
- next_token = self.get_current_events_token() + 1
+ # Now update all the tables to set the quarantined_by flag
- total_media_quarantined = 0
+ txn.executemany("""
+ UPDATE local_media_repository
+ SET quarantined_by = ?
+ WHERE media_id = ?
+ """, ((quarantined_by, media_id) for media_id in local_mxcs))
- while next_token:
- sql = """
- SELECT stream_ordering, content FROM events
- WHERE room_id = ?
- AND stream_ordering < ?
- AND contains_url = ? AND outlier = ?
- ORDER BY stream_ordering DESC
- LIMIT ?
+ txn.executemany(
"""
- txn.execute(sql, (room_id, next_token, True, False, 100))
-
- next_token = None
- local_media_mxcs = []
- remote_media_mxcs = []
- for stream_ordering, content_json in txn:
- next_token = stream_ordering
- content = json.loads(content_json)
-
- content_url = content.get("url")
- thumbnail_url = content.get("info", {}).get("thumbnail_url")
-
- for url in (content_url, thumbnail_url):
- if not url:
- continue
- matches = mxc_re.match(url)
- if matches:
- hostname = matches.group(1)
- media_id = matches.group(2)
- if hostname == self.hostname:
- local_media_mxcs.append(media_id)
- else:
- remote_media_mxcs.append((hostname, media_id))
-
- # Now update all the tables to set the quarantined_by flag
-
- txn.executemany("""
- UPDATE local_media_repository
+ UPDATE remote_media_cache
SET quarantined_by = ?
- WHERE media_id = ?
- """, ((quarantined_by, media_id) for media_id in local_media_mxcs))
-
- txn.executemany(
- """
- UPDATE remote_media_cache
- SET quarantined_by = ?
- WHERE media_origin = ? AND media_id = ?
- """,
- (
- (quarantined_by, origin, media_id)
- for origin, media_id in remote_media_mxcs
- )
+ WHERE media_origin = ? AND media_id = ?
+ """,
+ (
+ (quarantined_by, origin, media_id)
+ for origin, media_id in remote_mxcs
)
+ )
- total_media_quarantined += len(local_media_mxcs)
- total_media_quarantined += len(remote_media_mxcs)
+ total_media_quarantined += len(local_mxcs)
+ total_media_quarantined += len(remote_mxcs)
return total_media_quarantined
- return self.runInteraction("get_media_ids_in_room", _get_media_ids_in_room)
+ return self.runInteraction(
+ "quarantine_media_in_room",
+ _quarantine_media_in_room_txn,
+ )
+
+ def _get_media_mxcs_in_room_txn(self, txn, room_id):
+ """Retrieves all the local and remote media MXC URIs in a given room
+
+ Args:
+ txn (cursor)
+ room_id (str)
+
+ Returns:
+ The local and remote media as a lists of tuples where the key is
+ the hostname and the value is the media ID.
+ """
+ mxc_re = re.compile("^mxc://([^/]+)/([^/#?]+)")
+
+ next_token = self.get_current_events_token() + 1
+ local_media_mxcs = []
+ remote_media_mxcs = []
+
+ while next_token:
+ sql = """
+ SELECT stream_ordering, content FROM events
+ WHERE room_id = ?
+ AND stream_ordering < ?
+ AND contains_url = ? AND outlier = ?
+ ORDER BY stream_ordering DESC
+ LIMIT ?
+ """
+ txn.execute(sql, (room_id, next_token, True, False, 100))
+
+ next_token = None
+ for stream_ordering, content_json in txn:
+ next_token = stream_ordering
+ content = json.loads(content_json)
+
+ content_url = content.get("url")
+ thumbnail_url = content.get("info", {}).get("thumbnail_url")
+
+ for url in (content_url, thumbnail_url):
+ if not url:
+ continue
+ matches = mxc_re.match(url)
+ if matches:
+ hostname = matches.group(1)
+ media_id = matches.group(2)
+ if hostname == self.hostname:
+ local_media_mxcs.append(media_id)
+ else:
+ remote_media_mxcs.append((hostname, media_id))
+
+ return local_media_mxcs, remote_media_mxcs
diff --git a/synapse/storage/schema/delta/47/state_group_seq.py b/synapse/storage/schema/delta/47/state_group_seq.py
new file mode 100644
index 0000000000..f6766501d2
--- /dev/null
+++ b/synapse/storage/schema/delta/47/state_group_seq.py
@@ -0,0 +1,37 @@
+# Copyright 2018 New Vector 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.storage.engines import PostgresEngine
+
+
+def run_create(cur, database_engine, *args, **kwargs):
+ if isinstance(database_engine, PostgresEngine):
+ # if we already have some state groups, we want to start making new
+ # ones with a higher id.
+ cur.execute("SELECT max(id) FROM state_groups")
+ row = cur.fetchone()
+
+ if row[0] is None:
+ start_val = 1
+ else:
+ start_val = row[0] + 1
+
+ cur.execute(
+ "CREATE SEQUENCE state_group_id_seq START WITH %s",
+ (start_val, ),
+ )
+
+
+def run_upgrade(*args, **kwargs):
+ pass
diff --git a/synapse/storage/search.py b/synapse/storage/search.py
index eecf778516..7c80fab277 100644
--- a/synapse/storage/search.py
+++ b/synapse/storage/search.py
@@ -12,18 +12,19 @@
# 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 collections import namedtuple
+import logging
+import re
import sys
+import ujson as json
+
from twisted.internet import defer
from .background_updates import BackgroundUpdateStore
from synapse.api.errors import SynapseError
from synapse.storage.engines import PostgresEngine, Sqlite3Engine
-import logging
-import re
-import ujson as json
-
logger = logging.getLogger(__name__)
@@ -280,10 +281,10 @@ class SearchStore(BackgroundUpdateStore):
if isinstance(self.database_engine, PostgresEngine):
sql = (
"INSERT INTO event_search"
- " (event_id, room_id, key, vector, stream_ordering, "
- " origin_server_ts)"
+ " (event_id, room_id, key, vector, stream_ordering, origin_server_ts)"
" VALUES (?,?,?,to_tsvector('english', ?),?,?)"
)
+
args = ((
entry.event_id, entry.room_id, entry.key, entry.value,
entry.stream_ordering, entry.origin_server_ts,
diff --git a/synapse/storage/state.py b/synapse/storage/state.py
index 360e3e4355..adb48df73e 100644
--- a/synapse/storage/state.py
+++ b/synapse/storage/state.py
@@ -42,11 +42,8 @@ class _GetStateGroupDelta(namedtuple("_GetStateGroupDelta", ("prev_group", "delt
return len(self.delta_ids) if self.delta_ids else 0
-class StateGroupReadStore(SQLBaseStore):
- """The read-only parts of StateGroupStore
-
- None of these functions write to the state tables, so are suitable for
- including in the SlavedStores.
+class StateGroupWorkerStore(SQLBaseStore):
+ """The parts of StateGroupStore that can be called from workers.
"""
STATE_GROUP_DEDUPLICATION_UPDATE_NAME = "state_group_state_deduplication"
@@ -54,7 +51,7 @@ class StateGroupReadStore(SQLBaseStore):
CURRENT_STATE_INDEX_UPDATE_NAME = "current_state_members_idx"
def __init__(self, db_conn, hs):
- super(StateGroupReadStore, self).__init__(db_conn, hs)
+ super(StateGroupWorkerStore, self).__init__(db_conn, hs)
self._state_group_cache = DictionaryCache(
"*stateGroupCache*", 100000 * CACHE_SIZE_FACTOR
@@ -549,116 +546,66 @@ class StateGroupReadStore(SQLBaseStore):
defer.returnValue(results)
+ def store_state_group(self, event_id, room_id, prev_group, delta_ids,
+ current_state_ids):
+ """Store a new set of state, returning a newly assigned state group.
-class StateStore(StateGroupReadStore, BackgroundUpdateStore):
- """ Keeps track of the state at a given event.
-
- This is done by the concept of `state groups`. Every event is a assigned
- a state group (identified by an arbitrary string), which references a
- collection of state events. The current state of an event is then the
- collection of state events referenced by the event's state group.
-
- Hence, every change in the current state causes a new state group to be
- generated. However, if no change happens (e.g., if we get a message event
- with only one parent it inherits the state group from its parent.)
-
- There are three tables:
- * `state_groups`: Stores group name, first event with in the group and
- room id.
- * `event_to_state_groups`: Maps events to state groups.
- * `state_groups_state`: Maps state group to state events.
- """
-
- STATE_GROUP_DEDUPLICATION_UPDATE_NAME = "state_group_state_deduplication"
- STATE_GROUP_INDEX_UPDATE_NAME = "state_group_state_type_index"
- CURRENT_STATE_INDEX_UPDATE_NAME = "current_state_members_idx"
-
- def __init__(self, db_conn, hs):
- super(StateStore, self).__init__(db_conn, hs)
- self.register_background_update_handler(
- self.STATE_GROUP_DEDUPLICATION_UPDATE_NAME,
- self._background_deduplicate_state,
- )
- self.register_background_update_handler(
- self.STATE_GROUP_INDEX_UPDATE_NAME,
- self._background_index_state,
- )
- self.register_background_index_update(
- self.CURRENT_STATE_INDEX_UPDATE_NAME,
- index_name="current_state_events_member_index",
- table="current_state_events",
- columns=["state_key"],
- where_clause="type='m.room.member'",
- )
-
- def _have_persisted_state_group_txn(self, txn, state_group):
- txn.execute(
- "SELECT count(*) FROM state_groups WHERE id = ?",
- (state_group,)
- )
- row = txn.fetchone()
- return row and row[0]
-
- def _store_mult_state_groups_txn(self, txn, events_and_contexts):
- state_groups = {}
- for event, context in events_and_contexts:
- if event.internal_metadata.is_outlier():
- continue
+ Args:
+ event_id (str): The event ID for which the state was calculated
+ room_id (str)
+ prev_group (int|None): A previous state group for the room, optional.
+ delta_ids (dict|None): The delta between state at `prev_group` and
+ `current_state_ids`, if `prev_group` was given. Same format as
+ `current_state_ids`.
+ current_state_ids (dict): The state to store. Map of (type, state_key)
+ to event_id.
- if context.current_state_ids is None:
+ Returns:
+ Deferred[int]: The state group ID
+ """
+ def _store_state_group_txn(txn):
+ if current_state_ids is None:
# AFAIK, this can never happen
- logger.error(
- "Non-outlier event %s had current_state_ids==None",
- event.event_id)
- continue
+ raise Exception("current_state_ids cannot be None")
- # if the event was rejected, just give it the same state as its
- # predecessor.
- if context.rejected:
- state_groups[event.event_id] = context.prev_group
- continue
-
- state_groups[event.event_id] = context.state_group
-
- if self._have_persisted_state_group_txn(txn, context.state_group):
- continue
+ state_group = self.database_engine.get_next_state_group_id(txn)
self._simple_insert_txn(
txn,
table="state_groups",
values={
- "id": context.state_group,
- "room_id": event.room_id,
- "event_id": event.event_id,
+ "id": state_group,
+ "room_id": room_id,
+ "event_id": event_id,
},
)
# We persist as a delta if we can, while also ensuring the chain
# of deltas isn't tooo long, as otherwise read performance degrades.
- if context.prev_group:
+ if prev_group:
is_in_db = self._simple_select_one_onecol_txn(
txn,
table="state_groups",
- keyvalues={"id": context.prev_group},
+ keyvalues={"id": prev_group},
retcol="id",
allow_none=True,
)
if not is_in_db:
raise Exception(
"Trying to persist state with unpersisted prev_group: %r"
- % (context.prev_group,)
+ % (prev_group,)
)
potential_hops = self._count_state_group_hops_txn(
- txn, context.prev_group
+ txn, prev_group
)
- if context.prev_group and potential_hops < MAX_STATE_DELTA_HOPS:
+ if prev_group and potential_hops < MAX_STATE_DELTA_HOPS:
self._simple_insert_txn(
txn,
table="state_group_edges",
values={
- "state_group": context.state_group,
- "prev_state_group": context.prev_group,
+ "state_group": state_group,
+ "prev_state_group": prev_group,
},
)
@@ -667,13 +614,13 @@ class StateStore(StateGroupReadStore, BackgroundUpdateStore):
table="state_groups_state",
values=[
{
- "state_group": context.state_group,
- "room_id": event.room_id,
+ "state_group": state_group,
+ "room_id": room_id,
"type": key[0],
"state_key": key[1],
"event_id": state_id,
}
- for key, state_id in context.delta_ids.iteritems()
+ for key, state_id in delta_ids.iteritems()
],
)
else:
@@ -682,13 +629,13 @@ class StateStore(StateGroupReadStore, BackgroundUpdateStore):
table="state_groups_state",
values=[
{
- "state_group": context.state_group,
- "room_id": event.room_id,
+ "state_group": state_group,
+ "room_id": room_id,
"type": key[0],
"state_key": key[1],
"event_id": state_id,
}
- for key, state_id in context.current_state_ids.iteritems()
+ for key, state_id in current_state_ids.iteritems()
],
)
@@ -699,11 +646,71 @@ class StateStore(StateGroupReadStore, BackgroundUpdateStore):
txn.call_after(
self._state_group_cache.update,
self._state_group_cache.sequence,
- key=context.state_group,
- value=dict(context.current_state_ids),
+ key=state_group,
+ value=dict(current_state_ids),
full=True,
)
+ return state_group
+
+ return self.runInteraction("store_state_group", _store_state_group_txn)
+
+
+class StateStore(StateGroupWorkerStore, BackgroundUpdateStore):
+ """ Keeps track of the state at a given event.
+
+ This is done by the concept of `state groups`. Every event is a assigned
+ a state group (identified by an arbitrary string), which references a
+ collection of state events. The current state of an event is then the
+ collection of state events referenced by the event's state group.
+
+ Hence, every change in the current state causes a new state group to be
+ generated. However, if no change happens (e.g., if we get a message event
+ with only one parent it inherits the state group from its parent.)
+
+ There are three tables:
+ * `state_groups`: Stores group name, first event with in the group and
+ room id.
+ * `event_to_state_groups`: Maps events to state groups.
+ * `state_groups_state`: Maps state group to state events.
+ """
+
+ STATE_GROUP_DEDUPLICATION_UPDATE_NAME = "state_group_state_deduplication"
+ STATE_GROUP_INDEX_UPDATE_NAME = "state_group_state_type_index"
+ CURRENT_STATE_INDEX_UPDATE_NAME = "current_state_members_idx"
+
+ def __init__(self, db_conn, hs):
+ super(StateStore, self).__init__(db_conn, hs)
+ self.register_background_update_handler(
+ self.STATE_GROUP_DEDUPLICATION_UPDATE_NAME,
+ self._background_deduplicate_state,
+ )
+ self.register_background_update_handler(
+ self.STATE_GROUP_INDEX_UPDATE_NAME,
+ self._background_index_state,
+ )
+ self.register_background_index_update(
+ self.CURRENT_STATE_INDEX_UPDATE_NAME,
+ index_name="current_state_events_member_index",
+ table="current_state_events",
+ columns=["state_key"],
+ where_clause="type='m.room.member'",
+ )
+
+ def _store_event_state_mappings_txn(self, txn, events_and_contexts):
+ state_groups = {}
+ for event, context in events_and_contexts:
+ if event.internal_metadata.is_outlier():
+ continue
+
+ # if the event was rejected, just give it the same state as its
+ # predecessor.
+ if context.rejected:
+ state_groups[event.event_id] = context.prev_group
+ continue
+
+ state_groups[event.event_id] = context.state_group
+
self._simple_insert_many_txn(
txn,
table="event_to_state_groups",
@@ -763,9 +770,6 @@ class StateStore(StateGroupReadStore, BackgroundUpdateStore):
return count
- def get_next_state_group(self):
- return self._state_groups_id_gen.get_next()
-
@defer.inlineCallbacks
def _background_deduplicate_state(self, progress, batch_size):
"""This background update will slowly deduplicate state by reencoding
diff --git a/synapse/util/caches/descriptors.py b/synapse/util/caches/descriptors.py
index af65bfe7b8..bf3a66eae4 100644
--- a/synapse/util/caches/descriptors.py
+++ b/synapse/util/caches/descriptors.py
@@ -75,6 +75,7 @@ class Cache(object):
self.cache = LruCache(
max_size=max_entries, keylen=keylen, cache_type=cache_type,
size_callback=(lambda d: len(d)) if iterable else None,
+ evicted_callback=self._on_evicted,
)
self.name = name
@@ -83,6 +84,9 @@ class Cache(object):
self.thread = None
self.metrics = register_cache(name, self.cache)
+ def _on_evicted(self, evicted_count):
+ self.metrics.inc_evictions(evicted_count)
+
def check_thread(self):
expected_thread = self.thread
if expected_thread is None:
diff --git a/synapse/util/caches/expiringcache.py b/synapse/util/caches/expiringcache.py
index 6ad53a6390..0aa103eecb 100644
--- a/synapse/util/caches/expiringcache.py
+++ b/synapse/util/caches/expiringcache.py
@@ -79,7 +79,11 @@ class ExpiringCache(object):
while self._max_len and len(self) > self._max_len:
_key, value = self._cache.popitem(last=False)
if self.iterable:
- self._size_estimate -= len(value.value)
+ removed_len = len(value.value)
+ self.metrics.inc_evictions(removed_len)
+ self._size_estimate -= removed_len
+ else:
+ self.metrics.inc_evictions()
def __getitem__(self, key):
try:
diff --git a/synapse/util/caches/lrucache.py b/synapse/util/caches/lrucache.py
index cf5fbb679c..f088dd430e 100644
--- a/synapse/util/caches/lrucache.py
+++ b/synapse/util/caches/lrucache.py
@@ -49,7 +49,24 @@ class LruCache(object):
Can also set callbacks on objects when getting/setting which are fired
when that key gets invalidated/evicted.
"""
- def __init__(self, max_size, keylen=1, cache_type=dict, size_callback=None):
+ def __init__(self, max_size, keylen=1, cache_type=dict, size_callback=None,
+ evicted_callback=None):
+ """
+ Args:
+ max_size (int):
+
+ keylen (int):
+
+ cache_type (type):
+ type of underlying cache to be used. Typically one of dict
+ or TreeCache.
+
+ size_callback (func(V) -> int | None):
+
+ evicted_callback (func(int)|None):
+ if not None, called on eviction with the size of the evicted
+ entry
+ """
cache = cache_type()
self.cache = cache # Used for introspection.
list_root = _Node(None, None, None, None)
@@ -61,8 +78,10 @@ class LruCache(object):
def evict():
while cache_len() > max_size:
todelete = list_root.prev_node
- delete_node(todelete)
+ evicted_len = delete_node(todelete)
cache.pop(todelete.key, None)
+ if evicted_callback:
+ evicted_callback(evicted_len)
def synchronized(f):
@wraps(f)
@@ -111,12 +130,15 @@ class LruCache(object):
prev_node.next_node = next_node
next_node.prev_node = prev_node
+ deleted_len = 1
if size_callback:
- cached_cache_len[0] -= size_callback(node.value)
+ deleted_len = size_callback(node.value)
+ cached_cache_len[0] -= deleted_len
for cb in node.callbacks:
cb()
node.callbacks.clear()
+ return deleted_len
@synchronized
def cache_get(key, default=None, callbacks=[]):
|
