Merge pull request #808 from matrix-org/dbkr/room_list_spider

Add secondary_directory_servers option to fetch room list from other servers
This commit is contained in:
David Baker 2016-06-01 15:32:52 +01:00
commit 00c487a8db
7 changed files with 153 additions and 3 deletions

View File

@ -29,6 +29,7 @@ class ServerConfig(Config):
self.user_agent_suffix = config.get("user_agent_suffix")
self.use_frozen_dicts = config.get("use_frozen_dicts", True)
self.public_baseurl = config.get("public_baseurl")
self.secondary_directory_servers = config.get("secondary_directory_servers", [])
if self.public_baseurl is not None:
if self.public_baseurl[-1] != '/':
@ -156,6 +157,15 @@ class ServerConfig(Config):
# hard limit.
soft_file_limit: 0
# A list of other Home Servers to fetch the public room directory from
# and include in the public room directory of this home server
# This is a temporary stopgap solution to populate new server with a
# list of rooms until there exists a good solution of a decentralized
# room directory.
# secondary_directory_servers:
# - matrix.org
# - vector.im
# List of ports that Synapse should listen on, their purpose and their
# configuration.
listeners:

View File

@ -24,6 +24,7 @@ from synapse.api.errors import (
CodeMessageException, HttpResponseException, SynapseError,
)
from synapse.util import unwrapFirstError
from synapse.util.async import concurrently_execute
from synapse.util.caches.expiringcache import ExpiringCache
from synapse.util.logutils import log_function
from synapse.events import FrozenEvent
@ -550,6 +551,25 @@ class FederationClient(FederationBase):
raise RuntimeError("Failed to send to any server.")
@defer.inlineCallbacks
def get_public_rooms(self, destinations):
results_by_server = {}
@defer.inlineCallbacks
def _get_result(s):
if s == self.server_name:
defer.returnValue()
try:
result = yield self.transport_layer.get_public_rooms(s)
results_by_server[s] = result
except:
logger.exception("Error getting room list from server %r", s)
yield concurrently_execute(_get_result, destinations, 3)
defer.returnValue(results_by_server)
@defer.inlineCallbacks
def query_auth(self, destination, room_id, event_id, local_auth):
"""

View File

@ -224,6 +224,18 @@ class TransportLayerClient(object):
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):

View File

@ -134,10 +134,12 @@ class Authenticator(object):
class BaseFederationServlet(object):
def __init__(self, handler, authenticator, ratelimiter, server_name):
def __init__(self, handler, authenticator, ratelimiter, server_name,
room_list_handler):
self.handler = handler
self.authenticator = authenticator
self.ratelimiter = ratelimiter
self.room_list_handler = room_list_handler
def _wrap(self, code):
authenticator = self.authenticator
@ -492,6 +494,50 @@ class OpenIdUserInfo(BaseFederationServlet):
return code
class PublicRoomList(BaseFederationServlet):
"""
Fetch the public room list for this server.
This API returns information in the same format as /publicRooms on the
client API, but will only ever include local public rooms and hence is
intended for consumption by other home servers.
GET /publicRooms HTTP/1.1
HTTP/1.1 200 OK
Content-Type: application/json
{
"chunk": [
{
"aliases": [
"#test:localhost"
],
"guest_can_join": false,
"name": "test room",
"num_joined_members": 3,
"room_id": "!whkydVegtvatLfXmPN:localhost",
"world_readable": false
}
],
"end": "END",
"start": "START"
}
"""
PATH = "/publicRooms"
@defer.inlineCallbacks
def on_GET(self, request):
data = yield self.room_list_handler.get_local_public_room_list()
defer.returnValue((200, data))
# Avoid doing remote HS authorization checks which are done by default by
# BaseFederationServlet.
def _wrap(self, code):
return code
SERVLET_CLASSES = (
FederationSendServlet,
FederationPullServlet,
@ -513,6 +559,7 @@ SERVLET_CLASSES = (
FederationThirdPartyInviteExchangeServlet,
On3pidBindServlet,
OpenIdUserInfo,
PublicRoomList,
)
@ -523,4 +570,5 @@ def register_servlets(hs, resource, authenticator, ratelimiter):
authenticator=authenticator,
ratelimiter=ratelimiter,
server_name=hs.hostname,
room_list_handler=hs.get_room_list_handler(),
).register(resource)

View File

@ -36,6 +36,8 @@ import string
logger = logging.getLogger(__name__)
REMOTE_ROOM_LIST_POLL_INTERVAL = 60 * 1000
id_server_scheme = "https://"
@ -344,8 +346,14 @@ class RoomListHandler(BaseHandler):
def __init__(self, hs):
super(RoomListHandler, self).__init__(hs)
self.response_cache = ResponseCache()
self.remote_list_request_cache = ResponseCache()
self.remote_list_cache = {}
self.fetch_looping_call = hs.get_clock().looping_call(
self.fetch_all_remote_lists, REMOTE_ROOM_LIST_POLL_INTERVAL
)
self.fetch_all_remote_lists()
def get_public_room_list(self):
def get_local_public_room_list(self):
result = self.response_cache.get(())
if not result:
result = self.response_cache.set((), self._get_public_room_list())
@ -427,6 +435,55 @@ class RoomListHandler(BaseHandler):
# FIXME (erikj): START is no longer a valid value
defer.returnValue({"start": "START", "end": "END", "chunk": results})
@defer.inlineCallbacks
def fetch_all_remote_lists(self):
deferred = self.hs.get_replication_layer().get_public_rooms(
self.hs.config.secondary_directory_servers
)
self.remote_list_request_cache.set((), deferred)
yield deferred
@defer.inlineCallbacks
def get_aggregated_public_room_list(self):
"""
Get the public room list from this server and the servers
specified in the secondary_directory_servers config option.
XXX: Pagination...
"""
# We return the results from out cache which is updated by a looping call,
# unless we're missing a cache entry, in which case wait for the result
# of the fetch if there's one in progress. If not, omit that server.
wait = False
for s in self.hs.config.secondary_directory_servers:
if s not in self.remote_list_cache:
logger.warn("No cached room list from %s: waiting for fetch", s)
wait = True
break
if wait and self.remote_list_request_cache.get(()):
yield self.remote_list_request_cache.get(())
public_rooms = yield self.get_local_public_room_list()
# keep track of which room IDs we've seen so we can de-dup
room_ids = set()
# tag all the ones in our list with our server name.
# Also add the them to the de-deping set
for room in public_rooms['chunk']:
room["server_name"] = self.hs.hostname
room_ids.add(room["room_id"])
# Now add the results from federation
for server_name, server_result in self.remote_list_cache.items():
for room in server_result["chunk"]:
if room["room_id"] not in room_ids:
room["server_name"] = server_name
public_rooms["chunk"].append(room)
room_ids.add(room["room_id"])
defer.returnValue(public_rooms)
class RoomContextHandler(BaseHandler):
@defer.inlineCallbacks

View File

@ -280,7 +280,8 @@ class PublicRoomListRestServlet(ClientV1RestServlet):
@defer.inlineCallbacks
def on_GET(self, request):
handler = self.hs.get_room_list_handler()
data = yield handler.get_public_room_list()
data = yield handler.get_aggregated_public_room_list()
defer.returnValue((200, data))

View File

@ -67,6 +67,7 @@ def setup_test_homeserver(name="test", datastore=None, config=None, **kargs):
version_string="Synapse/tests",
database_engine=create_engine(config.database_config),
get_db_conn=db_pool.get_db_conn,
room_list_handler=object(),
**kargs
)
hs.setup()
@ -75,6 +76,7 @@ def setup_test_homeserver(name="test", datastore=None, config=None, **kargs):
name, db_pool=None, datastore=datastore, config=config,
version_string="Synapse/tests",
database_engine=create_engine(config.database_config),
room_list_handler=object(),
**kargs
)