diff options
Diffstat (limited to 'synapse/replication/http/send_event.py')
| -rw-r--r-- | synapse/replication/http/send_event.py | 67 |
1 files changed, 58 insertions, 9 deletions
diff --git a/synapse/replication/http/send_event.py b/synapse/replication/http/send_event.py index 468f4b68f4..bbe2f967b7 100644 --- a/synapse/replication/http/send_event.py +++ b/synapse/replication/http/send_event.py @@ -15,12 +15,17 @@ from twisted.internet import defer -from synapse.api.errors import SynapseError, MatrixCodeMessageException +from synapse.api.errors import ( + SynapseError, MatrixCodeMessageException, CodeMessageException, +) from synapse.events import FrozenEvent from synapse.events.snapshot import EventContext from synapse.http.servlet import RestServlet, parse_json_object_from_request +from synapse.util.async import sleep +from synapse.util.caches.response_cache import ResponseCache +from synapse.util.logcontext import make_deferred_yieldable, preserve_fn from synapse.util.metrics import Measure -from synapse.types import Requester +from synapse.types import Requester, UserID import logging import re @@ -29,7 +34,8 @@ logger = logging.getLogger(__name__) @defer.inlineCallbacks -def send_event_to_master(client, host, port, requester, event, context): +def send_event_to_master(client, host, port, requester, event, context, + ratelimit, extra_users): """Send event to be handled on the master Args: @@ -39,8 +45,12 @@ def send_event_to_master(client, host, port, requester, event, context): requester (Requester) event (FrozenEvent) context (EventContext) + ratelimit (bool) + extra_users (list(UserID)): Any extra users to notify about event """ - uri = "http://%s:%s/_synapse/replication/send_event" % (host, port,) + uri = "http://%s:%s/_synapse/replication/send_event/%s" % ( + host, port, event.event_id, + ) payload = { "event": event.get_pdu_json(), @@ -48,10 +58,27 @@ def send_event_to_master(client, host, port, requester, event, context): "rejected_reason": event.rejected_reason, "context": context.serialize(event), "requester": requester.serialize(), + "ratelimit": ratelimit, + "extra_users": [u.to_string() for u in extra_users], } try: - result = yield client.post_json_get_json(uri, payload) + # We keep retrying the same request for timeouts. This is so that we + # have a good idea that the request has either succeeded or failed on + # the master, and so whether we should clean up or not. + while True: + try: + result = yield client.put_json(uri, payload) + break + except CodeMessageException as e: + if e.code != 504: + raise + + logger.warn("send_event request timed out") + + # If we timed out we probably don't need to worry about backing + # off too much, but lets just wait a little anyway. + yield sleep(1) except MatrixCodeMessageException as e: # We convert to SynapseError as we know that it was a SynapseError # on the master process that we should send to the client. (And @@ -66,7 +93,7 @@ class ReplicationSendEventRestServlet(RestServlet): The API looks like: - POST /_synapse/replication/send_event + POST /_synapse/replication/send_event/:event_id { "event": { .. serialized event .. }, @@ -74,9 +101,11 @@ class ReplicationSendEventRestServlet(RestServlet): "rejected_reason": .., // The event.rejected_reason field "context": { .. serialized event context .. }, "requester": { .. serialized requester .. }, + "ratelimit": true, + "extra_users": [], } """ - PATTERNS = [re.compile("^/_synapse/replication/send_event$")] + PATTERNS = [re.compile("^/_synapse/replication/send_event/(?P<event_id>[^/]+)$")] def __init__(self, hs): super(ReplicationSendEventRestServlet, self).__init__() @@ -85,8 +114,23 @@ class ReplicationSendEventRestServlet(RestServlet): self.store = hs.get_datastore() self.clock = hs.get_clock() + # The responses are tiny, so we may as well cache them for a while + self.response_cache = ResponseCache(hs, timeout_ms=30 * 60 * 1000) + + def on_PUT(self, request, event_id): + result = self.response_cache.get(event_id) + if not result: + result = self.response_cache.set( + event_id, + self._handle_request(request) + ) + else: + logger.warn("Returning cached response") + return make_deferred_yieldable(result) + + @preserve_fn @defer.inlineCallbacks - def on_POST(self, request): + def _handle_request(self, request): with Measure(self.clock, "repl_send_event_parse"): content = parse_json_object_from_request(request) @@ -98,6 +142,9 @@ class ReplicationSendEventRestServlet(RestServlet): requester = Requester.deserialize(self.store, content["requester"]) context = yield EventContext.deserialize(self.store, content["context"]) + ratelimit = content["ratelimit"] + extra_users = [UserID.from_string(u) for u in content["extra_users"]] + if requester.user: request.authenticated_entity = requester.user.to_string() @@ -106,8 +153,10 @@ class ReplicationSendEventRestServlet(RestServlet): event.event_id, event.room_id, ) - yield self.event_creation_handler.handle_new_client_event( + yield self.event_creation_handler.persist_and_notify_client_event( requester, event, context, + ratelimit=ratelimit, + extra_users=extra_users, ) defer.returnValue((200, {})) |