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Merge pull request #3632 from matrix-org/erikj/refactor_repl_servlet 

Add helper base class for generating new replication endpoints
This commit is contained in:
Erik Johnston 2018-08-09 10:06:23 +01:00 committed by GitHub
parent 2511f3f8a0 62564797f5
commit 2bdafaf3c1
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GPG Key ID: 4AEE18F83AFDEB23
6 changed files with 396 additions and 274 deletions
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1
changelog.d/3632.misc Normal file
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@ -0,0 +1 @@
Refactor HTTP replication endpoints to reduce code duplication

11
synapse/handlers/message.py
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@ -30,7 +30,7 @@ from synapse.api.urls import ConsentURIBuilder
from synapse.crypto.event_signing import add_hashes_and_signatures
from synapse.events.utils import serialize_event
from synapse.events.validator import EventValidator
from synapse.replication.http.send_event import send_event_to_master
from synapse.replication.http.send_event import ReplicationSendEventRestServlet
from synapse.types import RoomAlias, UserID
from synapse.util.async import Linearizer
from synapse.util.frozenutils import frozendict_json_encoder
@ -171,7 +171,7 @@ class EventCreationHandler(object):
self.notifier = hs.get_notifier()
self.config = hs.config
self.http_client = hs.get_simple_http_client()
self.send_event_to_master = ReplicationSendEventRestServlet.make_client(hs)
# This is only used to get at ratelimit function, and maybe_kick_guest_users
self.base_handler = BaseHandler(hs)
@ -559,12 +559,9 @@ class EventCreationHandler(object):
try:
# If we're a worker we need to hit out to the master.
if self.config.worker_app:
yield send_event_to_master(
clock=self.hs.get_clock(),
yield self.send_event_to_master(
event_id=event.event_id,
store=self.store,
client=self.http_client,
host=self.config.worker_replication_host,
port=self.config.worker_replication_http_port,
requester=requester,
event=event,
context=context,

41
synapse/handlers/room_member_worker.py
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@ -20,16 +20,24 @@ from twisted.internet import defer
from synapse.api.errors import SynapseError
from synapse.handlers.room_member import RoomMemberHandler
from synapse.replication.http.membership import (
get_or_register_3pid_guest,
notify_user_membership_change,
remote_join,
remote_reject_invite,
ReplicationRegister3PIDGuestRestServlet as Repl3PID,
ReplicationRemoteJoinRestServlet as ReplRemoteJoin,
ReplicationRemoteRejectInviteRestServlet as ReplRejectInvite,
ReplicationUserJoinedLeftRoomRestServlet as ReplJoinedLeft,
)
logger = logging.getLogger(__name__)
class RoomMemberWorkerHandler(RoomMemberHandler):
def __init__(self, hs):
super(RoomMemberWorkerHandler, self).__init__(hs)
self._get_register_3pid_client = Repl3PID.make_client(hs)
self._remote_join_client = ReplRemoteJoin.make_client(hs)
self._remote_reject_client = ReplRejectInvite.make_client(hs)
self._notify_change_client = ReplJoinedLeft.make_client(hs)
@defer.inlineCallbacks
def _remote_join(self, requester, remote_room_hosts, room_id, user, content):
"""Implements RoomMemberHandler._remote_join
@ -37,10 +45,7 @@ class RoomMemberWorkerHandler(RoomMemberHandler):
if len(remote_room_hosts) == 0:
raise SynapseError(404, "No known servers")
ret = yield remote_join(
self.simple_http_client,
host=self.config.worker_replication_host,
port=self.config.worker_replication_http_port,
ret = yield self._remote_join_client(
requester=requester,
remote_room_hosts=remote_room_hosts,
room_id=room_id,
@ -55,10 +60,7 @@ class RoomMemberWorkerHandler(RoomMemberHandler):
def _remote_reject_invite(self, requester, remote_room_hosts, room_id, target):
"""Implements RoomMemberHandler._remote_reject_invite
"""
return remote_reject_invite(
self.simple_http_client,
host=self.config.worker_replication_host,
port=self.config.worker_replication_http_port,
return self._remote_reject_client(
requester=requester,
remote_room_hosts=remote_room_hosts,
room_id=room_id,
@ -68,10 +70,7 @@ class RoomMemberWorkerHandler(RoomMemberHandler):
def _user_joined_room(self, target, room_id):
"""Implements RoomMemberHandler._user_joined_room
"""
return notify_user_membership_change(
self.simple_http_client,
host=self.config.worker_replication_host,
port=self.config.worker_replication_http_port,
return self._notify_change_client(
user_id=target.to_string(),
room_id=room_id,
change="joined",
@ -80,10 +79,7 @@ class RoomMemberWorkerHandler(RoomMemberHandler):
def _user_left_room(self, target, room_id):
"""Implements RoomMemberHandler._user_left_room
"""
return notify_user_membership_change(
self.simple_http_client,
host=self.config.worker_replication_host,
port=self.config.worker_replication_http_port,
return self._notify_change_client(
user_id=target.to_string(),
room_id=room_id,
change="left",
@ -92,10 +88,7 @@ class RoomMemberWorkerHandler(RoomMemberHandler):
def get_or_register_3pid_guest(self, requester, medium, address, inviter_user_id):
"""Implements RoomMemberHandler.get_or_register_3pid_guest
"""
return get_or_register_3pid_guest(
self.simple_http_client,
host=self.config.worker_replication_host,
port=self.config.worker_replication_http_port,
return self._get_register_3pid_client(
requester=requester,
medium=medium,
address=address,

215
synapse/replication/http/_base.py Normal file
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@ -0,0 +1,215 @@
# -*- coding: utf-8 -*-
# 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.
import abc
import logging
import re
from six.moves import urllib
from twisted.internet import defer
from synapse.api.errors import CodeMessageException, HttpResponseException
from synapse.util.caches.response_cache import ResponseCache
from synapse.util.stringutils import random_string
logger = logging.getLogger(__name__)
class ReplicationEndpoint(object):
"""Helper base class for defining new replication HTTP endpoints.
This creates an endpoint under `/_synapse/replication/:NAME/:PATH_ARGS..`
(with an `/:txn_id` prefix for cached requests.), where NAME is a name,
PATH_ARGS are a tuple of parameters to be encoded in the URL.
For example, if `NAME` is "send_event" and `PATH_ARGS` is `("event_id",)`,
with `CACHE` set to true then this generates an endpoint:
/_synapse/replication/send_event/:event_id/:txn_id
For POST/PUT requests the payload is serialized to json and sent as the
body, while for GET requests the payload is added as query parameters. See
`_serialize_payload` for details.
Incoming requests are handled by overriding `_handle_request`. Servers
must call `register` to register the path with the HTTP server.
Requests can be sent by calling the client returned by `make_client`.
Attributes:
NAME (str): A name for the endpoint, added to the path as well as used
in logging and metrics.
PATH_ARGS (tuple[str]): A list of parameters to be added to the path.
Adding parameters to the path (rather than payload) can make it
easier to follow along in the log files.
METHOD (str): The method of the HTTP request, defaults to POST. Can be
one of POST, PUT or GET. If GET then the payload is sent as query
parameters rather than a JSON body.
CACHE (bool): Whether server should cache the result of the request/
If true then transparently adds a txn_id to all requests, and
`_handle_request` must return a Deferred.
RETRY_ON_TIMEOUT(bool): Whether or not to retry the request when a 504
is received.
"""
__metaclass__ = abc.ABCMeta
NAME = abc.abstractproperty()
PATH_ARGS = abc.abstractproperty()
METHOD = "POST"
CACHE = True
RETRY_ON_TIMEOUT = True
def __init__(self, hs):
if self.CACHE:
self.response_cache = ResponseCache(
hs, "repl." + self.NAME,
timeout_ms=30 * 60 * 1000,
)
assert self.METHOD in ("PUT", "POST", "GET")
@abc.abstractmethod
def _serialize_payload(**kwargs):
"""Static method that is called when creating a request.
Concrete implementations should have explicit parameters (rather than
kwargs) so that an appropriate exception is raised if the client is
called with unexpected parameters. All PATH_ARGS must appear in
argument list.
Returns:
Deferred[dict]|dict: If POST/PUT request then dictionary must be
JSON serialisable, otherwise must be appropriate for adding as
query args.
"""
return {}
@abc.abstractmethod
def _handle_request(self, request, **kwargs):
"""Handle incoming request.
This is called with the request object and PATH_ARGS.
Returns:
Deferred[dict]: A JSON serialisable dict to be used as response
body of request.
"""
pass
@classmethod
def make_client(cls, hs):
"""Create a client that makes requests.
Returns a callable that accepts the same parameters as `_serialize_payload`.
"""
clock = hs.get_clock()
host = hs.config.worker_replication_host
port = hs.config.worker_replication_http_port
client = hs.get_simple_http_client()
@defer.inlineCallbacks
def send_request(**kwargs):
data = yield cls._serialize_payload(**kwargs)
url_args = [urllib.parse.quote(kwargs[name]) for name in cls.PATH_ARGS]
if cls.CACHE:
txn_id = random_string(10)
url_args.append(txn_id)
if cls.METHOD == "POST":
request_func = client.post_json_get_json
elif cls.METHOD == "PUT":
request_func = client.put_json
elif cls.METHOD == "GET":
request_func = client.get_json
else:
# We have already asserted in the constructor that a
# compatible was picked, but lets be paranoid.
raise Exception(
"Unknown METHOD on %s replication endpoint" % (cls.NAME,)
)
uri = "http://%s:%s/_synapse/replication/%s/%s" % (
host, port, cls.NAME, "/".join(url_args)
)
try:
# 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 request_func(uri, data)
break
except CodeMessageException as e:
if e.code != 504 or not cls.RETRY_ON_TIMEOUT:
raise
logger.warn("%s request timed out", cls.NAME)
# If we timed out we probably don't need to worry about backing
# off too much, but lets just wait a little anyway.
yield clock.sleep(1)
except HttpResponseException 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
# importantly, not stack traces everywhere)
raise e.to_synapse_error()
defer.returnValue(result)
return send_request
def register(self, http_server):
"""Called by the server to register this as a handler to the
appropriate path.
"""
url_args = list(self.PATH_ARGS)
handler = self._handle_request
method = self.METHOD
if self.CACHE:
handler = self._cached_handler
url_args.append("txn_id")
args = "/".join("(?P<%s>[^/]+)" % (arg,) for arg in url_args)
pattern = re.compile("^/_synapse/replication/%s/%s$" % (
self.NAME,
args
))
http_server.register_paths(method, [pattern], handler)
def _cached_handler(self, request, txn_id, **kwargs):
"""Called on new incoming requests when caching is enabled. Checks
if there is a cached response for the request and returns that,
otherwise calls `_handle_request` and caches its response.
"""
# We just use the txn_id here, but we probably also want to use the
# other PATH_ARGS as well.
assert self.CACHE
return self.response_cache.wrap(
txn_id,
self._handle_request,
request, **kwargs
)

290
synapse/replication/http/membership.py
View File

@ -14,182 +14,63 @@
# limitations under the License.
import logging
import re
from twisted.internet import defer
from synapse.api.errors import HttpResponseException
from synapse.http.servlet import RestServlet, parse_json_object_from_request
from synapse.http.servlet import parse_json_object_from_request
from synapse.replication.http._base import ReplicationEndpoint
from synapse.types import Requester, UserID
from synapse.util.distributor import user_joined_room, user_left_room
logger = logging.getLogger(__name__)
@defer.inlineCallbacks
def remote_join(client, host, port, requester, remote_room_hosts,
room_id, user_id, content):
"""Ask the master to do a remote join for the given user to the given room
class ReplicationRemoteJoinRestServlet(ReplicationEndpoint):
"""Does a remote join for the given user to the given room
Args:
client (SimpleHttpClient)
host (str): host of master
port (int): port on master listening for HTTP replication
requester (Requester)
remote_room_hosts (list[str]): Servers to try and join via
room_id (str)
user_id (str)
content (dict): The event content to use for the join event
Request format:
Returns:
Deferred
"""
uri = "http://%s:%s/_synapse/replication/remote_join" % (host, port)
POST /_synapse/replication/remote_join/:room_id/:user_id
payload = {
"requester": requester.serialize(),
"remote_room_hosts": remote_room_hosts,
"room_id": room_id,
"user_id": user_id,
"content": content,
{
"requester": ...,
"remote_room_hosts": [...],
"content": { ... }
}
try:
result = yield client.post_json_get_json(uri, payload)
except HttpResponseException 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
# importantly, not stack traces everywhere)
raise e.to_synapse_error()
defer.returnValue(result)
@defer.inlineCallbacks
def remote_reject_invite(client, host, port, requester, remote_room_hosts,
room_id, user_id):
"""Ask master to reject the invite for the user and room.
Args:
client (SimpleHttpClient)
host (str): host of master
port (int): port on master listening for HTTP replication
requester (Requester)
remote_room_hosts (list[str]): Servers to try and reject via
room_id (str)
user_id (str)
Returns:
Deferred
"""
uri = "http://%s:%s/_synapse/replication/remote_reject_invite" % (host, port)
payload = {
"requester": requester.serialize(),
"remote_room_hosts": remote_room_hosts,
"room_id": room_id,
"user_id": user_id,
}
try:
result = yield client.post_json_get_json(uri, payload)
except HttpResponseException 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
# importantly, not stack traces everywhere)
raise e.to_synapse_error()
defer.returnValue(result)
@defer.inlineCallbacks
def get_or_register_3pid_guest(client, host, port, requester,
medium, address, inviter_user_id):
"""Ask the master to get/create a guest account for given 3PID.
Args:
client (SimpleHttpClient)
host (str): host of master
port (int): port on master listening for HTTP replication
requester (Requester)
medium (str)
address (str)
inviter_user_id (str): The user ID who is trying to invite the
3PID
Returns:
Deferred[(str, str)]: A 2-tuple of `(user_id, access_token)` of the
3PID guest account.
"""
uri = "http://%s:%s/_synapse/replication/get_or_register_3pid_guest" % (host, port)
payload = {
"requester": requester.serialize(),
"medium": medium,
"address": address,
"inviter_user_id": inviter_user_id,
}
try:
result = yield client.post_json_get_json(uri, payload)
except HttpResponseException 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
# importantly, not stack traces everywhere)
raise e.to_synapse_error()
defer.returnValue(result)
@defer.inlineCallbacks
def notify_user_membership_change(client, host, port, user_id, room_id, change):
"""Notify master that a user has joined or left the room
Args:
client (SimpleHttpClient)
host (str): host of master
port (int): port on master listening for HTTP replication.
user_id (str)
room_id (str)
change (str): Either "join" or "left"
Returns:
Deferred
"""
assert change in ("joined", "left")
uri = "http://%s:%s/_synapse/replication/user_%s_room" % (host, port, change)
payload = {
"user_id": user_id,
"room_id": room_id,
}
try:
result = yield client.post_json_get_json(uri, payload)
except HttpResponseException 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
# importantly, not stack traces everywhere)
raise e.to_synapse_error()
defer.returnValue(result)
class ReplicationRemoteJoinRestServlet(RestServlet):
PATTERNS = [re.compile("^/_synapse/replication/remote_join$")]
NAME = "remote_join"
PATH_ARGS = ("room_id", "user_id",)
def __init__(self, hs):
super(ReplicationRemoteJoinRestServlet, self).__init__()
super(ReplicationRemoteJoinRestServlet, self).__init__(hs)
self.federation_handler = hs.get_handlers().federation_handler
self.store = hs.get_datastore()
self.clock = hs.get_clock()
@staticmethod
def _serialize_payload(requester, room_id, user_id, remote_room_hosts,
content):
"""
Args:
requester(Requester)
room_id (str)
user_id (str)
remote_room_hosts (list[str]): Servers to try and join via
content(dict): The event content to use for the join event
"""
return {
"requester": requester.serialize(),
"remote_room_hosts": remote_room_hosts,
"content": content,
}
@defer.inlineCallbacks
def on_POST(self, request):
def _handle_request(self, request, room_id, user_id):
content = parse_json_object_from_request(request)
remote_room_hosts = content["remote_room_hosts"]
room_id = content["room_id"]
user_id = content["user_id"]
event_content = content["content"]
requester = Requester.deserialize(self.store, content["requester"])
@ -212,23 +93,48 @@ class ReplicationRemoteJoinRestServlet(RestServlet):
defer.returnValue((200, {}))
class ReplicationRemoteRejectInviteRestServlet(RestServlet):
PATTERNS = [re.compile("^/_synapse/replication/remote_reject_invite$")]
class ReplicationRemoteRejectInviteRestServlet(ReplicationEndpoint):
"""Rejects the invite for the user and room.
Request format:
POST /_synapse/replication/remote_reject_invite/:room_id/:user_id
{
"requester": ...,
"remote_room_hosts": [...],
}
"""
NAME = "remote_reject_invite"
PATH_ARGS = ("room_id", "user_id",)
def __init__(self, hs):
super(ReplicationRemoteRejectInviteRestServlet, self).__init__()
super(ReplicationRemoteRejectInviteRestServlet, self).__init__(hs)
self.federation_handler = hs.get_handlers().federation_handler
self.store = hs.get_datastore()
self.clock = hs.get_clock()
@staticmethod
def _serialize_payload(requester, room_id, user_id, remote_room_hosts):
"""
Args:
requester(Requester)
room_id (str)
user_id (str)
remote_room_hosts (list[str]): Servers to try and reject via
"""
return {
"requester": requester.serialize(),
"remote_room_hosts": remote_room_hosts,
}
@defer.inlineCallbacks
def on_POST(self, request):
def _handle_request(self, request, room_id, user_id):
content = parse_json_object_from_request(request)
remote_room_hosts = content["remote_room_hosts"]
room_id = content["room_id"]
user_id = content["user_id"]
requester = Requester.deserialize(self.store, content["requester"])
@ -264,18 +170,50 @@ class ReplicationRemoteRejectInviteRestServlet(RestServlet):
defer.returnValue((200, ret))
class ReplicationRegister3PIDGuestRestServlet(RestServlet):
PATTERNS = [re.compile("^/_synapse/replication/get_or_register_3pid_guest$")]
class ReplicationRegister3PIDGuestRestServlet(ReplicationEndpoint):
"""Gets/creates a guest account for given 3PID.
Request format:
POST /_synapse/replication/get_or_register_3pid_guest/
{
"requester": ...,
"medium": ...,
"address": ...,
"inviter_user_id": ...
}
"""
NAME = "get_or_register_3pid_guest"
PATH_ARGS = ()
def __init__(self, hs):
super(ReplicationRegister3PIDGuestRestServlet, self).__init__()
super(ReplicationRegister3PIDGuestRestServlet, self).__init__(hs)
self.registeration_handler = hs.get_handlers().registration_handler
self.store = hs.get_datastore()
self.clock = hs.get_clock()
@staticmethod
def _serialize_payload(requester, medium, address, inviter_user_id):
"""
Args:
requester(Requester)
medium (str)
address (str)
inviter_user_id (str): The user ID who is trying to invite the
3PID
"""
return {
"requester": requester.serialize(),
"medium": medium,
"address": address,
"inviter_user_id": inviter_user_id,
}
@defer.inlineCallbacks
def on_POST(self, request):
def _handle_request(self, request):
content = parse_json_object_from_request(request)
medium = content["medium"]
@ -296,23 +234,41 @@ class ReplicationRegister3PIDGuestRestServlet(RestServlet):
defer.returnValue((200, ret))
class ReplicationUserJoinedLeftRoomRestServlet(RestServlet):
PATTERNS = [re.compile("^/_synapse/replication/user_(?P<change>joined|left)_room$")]
class ReplicationUserJoinedLeftRoomRestServlet(ReplicationEndpoint):
"""Notifies that a user has joined or left the room
Request format:
POST /_synapse/replication/membership_change/:room_id/:user_id/:change
{}
"""
NAME = "membership_change"
PATH_ARGS = ("room_id", "user_id", "change")
CACHE = False # No point caching as should return instantly.
def __init__(self, hs):
super(ReplicationUserJoinedLeftRoomRestServlet, self).__init__()
super(ReplicationUserJoinedLeftRoomRestServlet, self).__init__(hs)
self.registeration_handler = hs.get_handlers().registration_handler
self.store = hs.get_datastore()
self.clock = hs.get_clock()
self.distributor = hs.get_distributor()
def on_POST(self, request, change):
content = parse_json_object_from_request(request)
@staticmethod
def _serialize_payload(room_id, user_id, change):
"""
Args:
room_id (str)
user_id (str)
change (str): Either "joined" or "left"
"""
assert change in ("joined", "left",)
user_id = content["user_id"]
room_id = content["room_id"]
return {}
def _handle_request(self, request, room_id, user_id, change):
logger.info("user membership change: %s in %s", user_id, room_id)
user = UserID.from_string(user_id)

114
synapse/replication/http/send_event.py
View File

@ -14,41 +14,61 @@
# limitations under the License.
import logging
import re
from twisted.internet import defer
from synapse.api.errors import CodeMessageException, HttpResponseException
from synapse.events import FrozenEvent
from synapse.events.snapshot import EventContext
from synapse.http.servlet import RestServlet, parse_json_object_from_request
from synapse.http.servlet import parse_json_object_from_request
from synapse.replication.http._base import ReplicationEndpoint
from synapse.types import Requester, UserID
from synapse.util.caches.response_cache import ResponseCache
from synapse.util.metrics import Measure
logger = logging.getLogger(__name__)
@defer.inlineCallbacks
def send_event_to_master(clock, store, client, host, port, requester, event, context,
ratelimit, extra_users):
"""Send event to be handled on the master
class ReplicationSendEventRestServlet(ReplicationEndpoint):
"""Handles events newly created on workers, including persisting and
notifying.
The API looks like:
POST /_synapse/replication/send_event/:event_id/:txn_id
{
"event": { .. serialized event .. },
"internal_metadata": { .. serialized internal_metadata .. },
"rejected_reason": .., // The event.rejected_reason field
"context": { .. serialized event context .. },
"requester": { .. serialized requester .. },
"ratelimit": true,
"extra_users": [],
}
"""
NAME = "send_event"
PATH_ARGS = ("event_id",)
def __init__(self, hs):
super(ReplicationSendEventRestServlet, self).__init__(hs)
self.event_creation_handler = hs.get_event_creation_handler()
self.store = hs.get_datastore()
self.clock = hs.get_clock()
@staticmethod
@defer.inlineCallbacks
def _serialize_payload(event_id, store, event, context, requester,
ratelimit, extra_users):
"""
Args:
clock (synapse.util.Clock)
event_id (str)
store (DataStore)
client (SimpleHttpClient)
host (str): host of master
port (int): port on master listening for HTTP replication
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/%s" % (
host, port, event.event_id,
)
serialized_context = yield context.serialize(event, store)
@ -62,70 +82,10 @@ def send_event_to_master(clock, store, client, host, port, requester, event, con
"extra_users": [u.to_string() for u in extra_users],
}
try:
# 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 clock.sleep(1)
except HttpResponseException 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
# importantly, not stack traces everywhere)
raise e.to_synapse_error()
defer.returnValue(result)
class ReplicationSendEventRestServlet(RestServlet):
"""Handles events newly created on workers, including persisting and
notifying.
The API looks like:
POST /_synapse/replication/send_event/:event_id
{
"event": { .. serialized event .. },
"internal_metadata": { .. serialized internal_metadata .. },
"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/(?P<event_id>[^/]+)$")]
def __init__(self, hs):
super(ReplicationSendEventRestServlet, self).__init__()
self.event_creation_handler = hs.get_event_creation_handler()
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, "send_event", timeout_ms=30 * 60 * 1000)
def on_PUT(self, request, event_id):
return self.response_cache.wrap(
event_id,
self._handle_request,
request
)
defer.returnValue(payload)
@defer.inlineCallbacks
def _handle_request(self, request):
def _handle_request(self, request, event_id):
with Measure(self.clock, "repl_send_event_parse"):
content = parse_json_object_from_request(request)