synapse-product/synapse/federation/transport/client.py
Mark Haines 949c2c5435 Add a timeout parameter for end2end key queries.
Add a timeout parameter for controlling how long synapse will wait
for responses from remote servers. For servers that fail include how
they failed to make it easier to debug.

Fetch keys from different servers in parallel rather than in series.

Set the default timeout to 10s.
2016-09-12 18:17:09 +01:00

389 lines
12 KiB
Python

# -*- coding: utf-8 -*-
# Copyright 2014-2016 OpenMarket Ltd
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from twisted.internet import defer
from synapse.api.constants import Membership
from synapse.api.urls import FEDERATION_PREFIX as PREFIX
from synapse.util.logutils import log_function
import logging
logger = logging.getLogger(__name__)
class TransportLayerClient(object):
"""Sends federation HTTP requests to other servers"""
def __init__(self, hs):
self.server_name = hs.hostname
self.client = hs.get_http_client()
@log_function
def get_room_state(self, destination, room_id, event_id):
""" Requests all state for a given room from the given server at the
given event.
Args:
destination (str): The host name of the remote home server we want
to get the state from.
context (str): The name of the context we want the state of
event_id (str): The event we want the context at.
Returns:
Deferred: Results in a dict received from the remote homeserver.
"""
logger.debug("get_room_state dest=%s, room=%s",
destination, room_id)
path = PREFIX + "/state/%s/" % room_id
return self.client.get_json(
destination, path=path, args={"event_id": event_id},
)
@log_function
def get_room_state_ids(self, destination, room_id, event_id):
""" Requests all state for a given room from the given server at the
given event. Returns the state's event_id's
Args:
destination (str): The host name of the remote home server we want
to get the state from.
context (str): The name of the context we want the state of
event_id (str): The event we want the context at.
Returns:
Deferred: Results in a dict received from the remote homeserver.
"""
logger.debug("get_room_state_ids dest=%s, room=%s",
destination, room_id)
path = PREFIX + "/state_ids/%s/" % room_id
return self.client.get_json(
destination, path=path, args={"event_id": event_id},
)
@log_function
def get_event(self, destination, event_id, timeout=None):
""" Requests the pdu with give id and origin from the given server.
Args:
destination (str): The host name of the remote home server we want
to get the state from.
event_id (str): The id of the event being requested.
timeout (int): How long to try (in ms) the destination for before
giving up. None indicates no timeout.
Returns:
Deferred: Results in a dict received from the remote homeserver.
"""
logger.debug("get_pdu dest=%s, event_id=%s",
destination, event_id)
path = PREFIX + "/event/%s/" % (event_id, )
return self.client.get_json(destination, path=path, timeout=timeout)
@log_function
def backfill(self, destination, room_id, event_tuples, limit):
""" Requests `limit` previous PDUs in a given context before list of
PDUs.
Args:
dest (str)
room_id (str)
event_tuples (list)
limt (int)
Returns:
Deferred: Results in a dict received from the remote homeserver.
"""
logger.debug(
"backfill dest=%s, room_id=%s, event_tuples=%s, limit=%s",
destination, room_id, repr(event_tuples), str(limit)
)
if not event_tuples:
# TODO: raise?
return
path = PREFIX + "/backfill/%s/" % (room_id,)
args = {
"v": event_tuples,
"limit": [str(limit)],
}
return self.client.get_json(
destination,
path=path,
args=args,
)
@defer.inlineCallbacks
@log_function
def send_transaction(self, transaction, json_data_callback=None):
""" Sends the given Transaction to its destination
Args:
transaction (Transaction)
Returns:
Deferred: Results of the deferred is a tuple in the form of
(response_code, response_body) where the response_body is a
python dict decoded from json
"""
logger.debug(
"send_data dest=%s, txid=%s",
transaction.destination, transaction.transaction_id
)
if transaction.destination == self.server_name:
raise RuntimeError("Transport layer cannot send to itself!")
# FIXME: This is only used by the tests. The actual json sent is
# generated by the json_data_callback.
json_data = transaction.get_dict()
response = yield self.client.put_json(
transaction.destination,
path=PREFIX + "/send/%s/" % transaction.transaction_id,
data=json_data,
json_data_callback=json_data_callback,
long_retries=True,
)
logger.debug(
"send_data dest=%s, txid=%s, got response: 200",
transaction.destination, transaction.transaction_id,
)
defer.returnValue(response)
@defer.inlineCallbacks
@log_function
def make_query(self, destination, query_type, args, retry_on_dns_fail):
path = PREFIX + "/query/%s" % query_type
content = yield self.client.get_json(
destination=destination,
path=path,
args=args,
retry_on_dns_fail=retry_on_dns_fail,
timeout=10000,
)
defer.returnValue(content)
@defer.inlineCallbacks
@log_function
def make_membership_event(self, destination, room_id, user_id, membership):
valid_memberships = {Membership.JOIN, Membership.LEAVE}
if membership not in valid_memberships:
raise RuntimeError(
"make_membership_event called with membership='%s', must be one of %s" %
(membership, ",".join(valid_memberships))
)
path = PREFIX + "/make_%s/%s/%s" % (membership, room_id, user_id)
content = yield self.client.get_json(
destination=destination,
path=path,
retry_on_dns_fail=False,
timeout=20000,
)
defer.returnValue(content)
@defer.inlineCallbacks
@log_function
def send_join(self, destination, room_id, event_id, content):
path = PREFIX + "/send_join/%s/%s" % (room_id, event_id)
response = yield self.client.put_json(
destination=destination,
path=path,
data=content,
)
defer.returnValue(response)
@defer.inlineCallbacks
@log_function
def send_leave(self, destination, room_id, event_id, content):
path = PREFIX + "/send_leave/%s/%s" % (room_id, event_id)
response = yield self.client.put_json(
destination=destination,
path=path,
data=content,
)
defer.returnValue(response)
@defer.inlineCallbacks
@log_function
def send_invite(self, destination, room_id, event_id, content):
path = PREFIX + "/invite/%s/%s" % (room_id, event_id)
response = yield self.client.put_json(
destination=destination,
path=path,
data=content,
)
defer.returnValue(response)
@defer.inlineCallbacks
@log_function
def get_public_rooms(self, remote_server):
path = PREFIX + "/publicRooms"
response = yield self.client.get_json(
destination=remote_server,
path=path,
)
defer.returnValue(response)
@defer.inlineCallbacks
@log_function
def exchange_third_party_invite(self, destination, room_id, event_dict):
path = PREFIX + "/exchange_third_party_invite/%s" % (room_id,)
response = yield self.client.put_json(
destination=destination,
path=path,
data=event_dict,
)
defer.returnValue(response)
@defer.inlineCallbacks
@log_function
def get_event_auth(self, destination, room_id, event_id):
path = PREFIX + "/event_auth/%s/%s" % (room_id, event_id)
content = yield self.client.get_json(
destination=destination,
path=path,
)
defer.returnValue(content)
@defer.inlineCallbacks
@log_function
def send_query_auth(self, destination, room_id, event_id, content):
path = PREFIX + "/query_auth/%s/%s" % (room_id, event_id)
content = yield self.client.post_json(
destination=destination,
path=path,
data=content,
)
defer.returnValue(content)
@defer.inlineCallbacks
@log_function
def query_client_keys(self, destination, query_content, timeout):
"""Query the device keys for a list of user ids hosted on a remote
server.
Request:
{
"device_keys": {
"<user_id>": ["<device_id>"]
} }
Response:
{
"device_keys": {
"<user_id>": {
"<device_id>": {...}
} } }
Args:
destination(str): The server to query.
query_content(dict): The user ids to query.
Returns:
A dict containg the device keys.
"""
path = PREFIX + "/user/keys/query"
content = yield self.client.post_json(
destination=destination,
path=path,
data=query_content,
timeout=timeout,
)
defer.returnValue(content)
@defer.inlineCallbacks
@log_function
def claim_client_keys(self, destination, query_content, timeout):
"""Claim one-time keys for a list of devices hosted on a remote server.
Request:
{
"one_time_keys": {
"<user_id>": {
"<device_id>": "<algorithm>"
} } }
Response:
{
"device_keys": {
"<user_id>": {
"<device_id>": {
"<algorithm>:<key_id>": "<key_base64>"
} } } }
Args:
destination(str): The server to query.
query_content(dict): The user ids to query.
Returns:
A dict containg the one-time keys.
"""
path = PREFIX + "/user/keys/claim"
content = yield self.client.post_json(
destination=destination,
path=path,
data=query_content,
timeout=timeout,
)
defer.returnValue(content)
@defer.inlineCallbacks
@log_function
def get_missing_events(self, destination, room_id, earliest_events,
latest_events, limit, min_depth):
path = PREFIX + "/get_missing_events/%s" % (room_id,)
content = yield self.client.post_json(
destination=destination,
path=path,
data={
"limit": int(limit),
"min_depth": int(min_depth),
"earliest_events": earliest_events,
"latest_events": latest_events,
}
)
defer.returnValue(content)