diff options
Diffstat (limited to 'synapse/handlers/message.py')
| -rw-r--r-- | synapse/handlers/message.py | 514 |
1 files changed, 342 insertions, 172 deletions
diff --git a/synapse/handlers/message.py b/synapse/handlers/message.py index d7413833ed..5a8ddc253e 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. @@ -13,7 +13,8 @@ # 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 twisted.internet import defer +from twisted.internet import defer, reactor +from twisted.python.failure import Failure from synapse.api.constants import EventTypes, Membership from synapse.api.errors import AuthError, Codes, SynapseError @@ -24,10 +25,12 @@ from synapse.types import ( UserID, RoomAlias, RoomStreamToken, ) from synapse.util.async import run_on_reactor, ReadWriteLock, Limiter -from synapse.util.logcontext import preserve_fn +from synapse.util.logcontext import preserve_fn, run_in_background from synapse.util.metrics import measure_func from synapse.util.frozenutils import unfreeze +from synapse.util.stringutils import random_string from synapse.visibility import filter_events_for_client +from synapse.replication.http.send_event import send_event_to_master from ._base import BaseHandler @@ -40,6 +43,36 @@ import simplejson logger = logging.getLogger(__name__) +class PurgeStatus(object): + """Object tracking the status of a purge request + + This class contains information on the progress of a purge request, for + return by get_purge_status. + + Attributes: + status (int): Tracks whether this request has completed. One of + STATUS_{ACTIVE,COMPLETE,FAILED} + """ + + STATUS_ACTIVE = 0 + STATUS_COMPLETE = 1 + STATUS_FAILED = 2 + + STATUS_TEXT = { + STATUS_ACTIVE: "active", + STATUS_COMPLETE: "complete", + STATUS_FAILED: "failed", + } + + def __init__(self): + self.status = PurgeStatus.STATUS_ACTIVE + + def asdict(self): + return { + "status": PurgeStatus.STATUS_TEXT[self.status] + } + + class MessageHandler(BaseHandler): def __init__(self, hs): @@ -47,32 +80,89 @@ 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._purges_in_progress_by_room = set() + # map from purge id to PurgeStatus + self._purges_by_id = {} - self.pusher_pool = hs.get_pusherpool() + def start_purge_history(self, room_id, topological_ordering, + delete_local_events=False): + """Start off a history purge on a room. - # 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) + Args: + room_id (str): The room to purge from - self.action_generator = hs.get_action_generator() + topological_ordering (int): minimum topo ordering to preserve + delete_local_events (bool): True to delete local events as well as + remote ones - self.spam_checker = hs.get_spam_checker() + Returns: + str: unique ID for this purge transaction. + """ + if room_id in self._purges_in_progress_by_room: + raise SynapseError( + 400, + "History purge already in progress for %s" % (room_id, ), + ) + + purge_id = random_string(16) + + # we log the purge_id here so that it can be tied back to the + # request id in the log lines. + logger.info("[purge] starting purge_id %s", purge_id) + + self._purges_by_id[purge_id] = PurgeStatus() + run_in_background( + self._purge_history, + purge_id, room_id, topological_ordering, delete_local_events, + ) + return purge_id @defer.inlineCallbacks - def purge_history(self, room_id, event_id): - event = yield self.store.get_event(event_id) + def _purge_history(self, purge_id, room_id, topological_ordering, + delete_local_events): + """Carry out a history purge on a room. + + Args: + purge_id (str): The id for this purge + room_id (str): The room to purge from + topological_ordering (int): minimum topo ordering to preserve + delete_local_events (bool): True to delete local events as well as + remote ones + + Returns: + Deferred + """ + self._purges_in_progress_by_room.add(room_id) + try: + with (yield self.pagination_lock.write(room_id)): + yield self.store.purge_history( + room_id, topological_ordering, delete_local_events, + ) + logger.info("[purge] complete") + self._purges_by_id[purge_id].status = PurgeStatus.STATUS_COMPLETE + except Exception: + logger.error("[purge] failed: %s", Failure().getTraceback().rstrip()) + self._purges_by_id[purge_id].status = PurgeStatus.STATUS_FAILED + finally: + self._purges_in_progress_by_room.discard(room_id) - if event.room_id != room_id: - raise SynapseError(400, "Event is for wrong room.") + # remove the purge from the list 24 hours after it completes + def clear_purge(): + del self._purges_by_id[purge_id] + reactor.callLater(24 * 3600, clear_purge) - depth = event.depth + def get_purge_status(self, purge_id): + """Get the current status of an active purge - with (yield self.pagination_lock.write(room_id)): - yield self.store.delete_old_state(room_id, depth) + Args: + purge_id (str): purge_id returned by start_purge_history + + Returns: + PurgeStatus|None + """ + return self._purges_by_id.get(purge_id) @defer.inlineCallbacks def get_messages(self, requester, room_id=None, pagin_config=None, @@ -183,6 +273,165 @@ 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() + self.config = hs.config + + self.http_client = hs.get_simple_http_client() + + # 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 +483,7 @@ 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 +508,6 @@ 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,) @@ -280,12 +524,6 @@ class MessageHandler(BaseHandler): ratelimit=ratelimit, ) - if event.type == EventTypes.Message: - presence = self.hs.get_presence_handler() - # We don't want to block sending messages on any presence code. This - # matters as sometimes presence code can take a while. - preserve_fn(presence.bump_presence_active_time)(user) - @defer.inlineCallbacks def deduplicate_state_event(self, event, context): """ @@ -342,137 +580,9 @@ 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 +619,7 @@ 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 @@ -546,12 +654,21 @@ class MessageHandler(BaseHandler): event, context, ratelimit=True, - extra_users=[] + extra_users=[], ): - # We now need to go and hit out to wherever we need to hit out to. + """Processes a new event. This includes checking auth, persisting it, + notifying users, sending to remote servers, etc. - if ratelimit: - yield self.ratelimit(requester) + If called from a worker will hit out to the master process for final + processing. + + Args: + requester (Requester) + event (FrozenEvent) + context (EventContext) + ratelimit (bool) + extra_users (list(UserID)): Any extra users to notify about event + """ try: yield self.auth.check_from_context(event, context) @@ -567,7 +684,58 @@ class MessageHandler(BaseHandler): logger.exception("Failed to encode content: %r", event.content) raise - yield self.maybe_kick_guest_users(event, context) + yield self.action_generator.handle_push_actions_for_event( + event, context + ) + + try: + # If we're a worker we need to hit out to the master. + if self.config.worker_app: + yield send_event_to_master( + self.http_client, + host=self.config.worker_replication_host, + port=self.config.worker_replication_http_port, + requester=requester, + event=event, + context=context, + ratelimit=ratelimit, + extra_users=extra_users, + ) + return + + yield self.persist_and_notify_client_event( + requester, + event, + context, + ratelimit=ratelimit, + extra_users=extra_users, + ) + except: # noqa: E722, as we reraise the exception this is fine. + # Ensure that we actually remove the entries in the push actions + # staging area, if we calculated them. + preserve_fn(self.store.remove_push_actions_from_staging)(event.event_id) + raise + + @defer.inlineCallbacks + def persist_and_notify_client_event( + self, + requester, + event, + context, + ratelimit=True, + extra_users=[], + ): + """Called when we have fully built the event, have already + calculated the push actions for the event, and checked auth. + + This should only be run on master. + """ + assert not self.config.worker_app + + if ratelimit: + yield self.base_handler.ratelimit(requester) + + 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) @@ -660,10 +828,6 @@ class MessageHandler(BaseHandler): "Changing the room create event is forbidden", ) - yield self.action_generator.handle_push_actions_for_event( - event, context - ) - (event_stream_id, max_stream_id) = yield self.store.persist_event( event, context=context ) @@ -683,3 +847,9 @@ class MessageHandler(BaseHandler): ) preserve_fn(_notify)() + + if event.type == EventTypes.Message: + presence = self.hs.get_presence_handler() + # We don't want to block sending messages on any presence code. This + # matters as sometimes presence code can take a while. + preserve_fn(presence.bump_presence_active_time)(requester.user) |