diff options
Diffstat (limited to 'synapse/federation/federation_server.py')
| -rw-r--r-- | synapse/federation/federation_server.py | 117 |
1 files changed, 69 insertions, 48 deletions
diff --git a/synapse/federation/federation_server.py b/synapse/federation/federation_server.py index 9849953c9b..5b1914f2f4 100644 --- a/synapse/federation/federation_server.py +++ b/synapse/federation/federation_server.py @@ -17,7 +17,7 @@ import logging import simplejson as json from twisted.internet import defer -from synapse.api.errors import AuthError, FederationError, SynapseError +from synapse.api.errors import AuthError, FederationError, SynapseError, NotFoundError from synapse.crypto.event_signing import compute_event_signature from synapse.federation.federation_base import ( FederationBase, @@ -56,6 +56,8 @@ class FederationServer(FederationBase): self._server_linearizer = async.Linearizer("fed_server") self._transaction_linearizer = async.Linearizer("fed_txn_handler") + self.registry = hs.get_federation_registry() + # We cache responses to state queries, as they take a while and often # come in waves. self._state_resp_cache = ResponseCache(hs, timeout_ms=30000) @@ -67,35 +69,6 @@ class FederationServer(FederationBase): """ self.handler = handler - def register_edu_handler(self, edu_type, handler): - if edu_type in self.edu_handlers: - raise KeyError("Already have an EDU handler for %s" % (edu_type,)) - - self.edu_handlers[edu_type] = handler - - def register_query_handler(self, query_type, handler): - """Sets the handler callable that will be used to handle an incoming - federation Query of the given type. - - Args: - query_type (str): Category name of the query, which should match - the string used by make_query. - handler (callable): Invoked to handle incoming queries of this type - - handler is invoked as: - result = handler(args) - - where 'args' is a dict mapping strings to strings of the query - arguments. It should return a Deferred that will eventually yield an - object to encode as JSON. - """ - if query_type in self.query_handlers: - raise KeyError( - "Already have a Query handler for %s" % (query_type,) - ) - - self.query_handlers[query_type] = handler - @defer.inlineCallbacks @log_function def on_backfill_request(self, origin, room_id, versions, limit): @@ -229,16 +202,7 @@ class FederationServer(FederationBase): @defer.inlineCallbacks def received_edu(self, origin, edu_type, content): received_edus_counter.inc() - - if edu_type in self.edu_handlers: - try: - yield self.edu_handlers[edu_type](origin, content) - except SynapseError as e: - logger.info("Failed to handle edu %r: %r", edu_type, e) - except Exception as e: - logger.exception("Failed to handle edu %r", edu_type) - else: - logger.warn("Received EDU of type %s with no handler", edu_type) + yield self.registry.on_edu(edu_type, origin, content) @defer.inlineCallbacks @log_function @@ -328,14 +292,8 @@ class FederationServer(FederationBase): @defer.inlineCallbacks def on_query_request(self, query_type, args): received_queries_counter.inc(query_type) - - if query_type in self.query_handlers: - response = yield self.query_handlers[query_type](args) - defer.returnValue((200, response)) - else: - defer.returnValue( - (404, "No handler for Query type '%s'" % (query_type,)) - ) + resp = yield self.registry.on_query(query_type, args) + defer.returnValue((200, resp)) @defer.inlineCallbacks def on_make_join_request(self, room_id, user_id): @@ -607,3 +565,66 @@ class FederationServer(FederationBase): origin, room_id, event_dict ) defer.returnValue(ret) + + +class FederationHandlerRegistry(object): + """Allows classes to register themselves as handlers for a given EDU or + query type for incoming federation traffic. + """ + def __init__(self): + self.edu_handlers = {} + self.query_handlers = {} + + def register_edu_handler(self, edu_type, handler): + """Sets the handler callable that will be used to handle an incoming + federation EDU of the given type. + + Args: + edu_type (str): The type of the incoming EDU to register handler for + handler (Callable[str, dict]): A callable invoked on incoming EDU + of the given type. The arguments are the origin server name and + the EDU contents. + """ + if edu_type in self.edu_handlers: + raise KeyError("Already have an EDU handler for %s" % (edu_type,)) + + self.edu_handlers[edu_type] = handler + + def register_query_handler(self, query_type, handler): + """Sets the handler callable that will be used to handle an incoming + federation query of the given type. + + Args: + query_type (str): Category name of the query, which should match + the string used by make_query. + handler (Callable[dict] -> Deferred[dict]): Invoked to handle + incoming queries of this type. The return will be yielded + on and the result used as the response to the query request. + """ + if query_type in self.query_handlers: + raise KeyError( + "Already have a Query handler for %s" % (query_type,) + ) + + self.query_handlers[query_type] = handler + + @defer.inlineCallbacks + def on_edu(self, edu_type, origin, content): + handler = self.edu_handlers.get(edu_type) + if not handler: + logger.warn("No handler registered for EDU type %s", edu_type) + + try: + yield handler(origin, content) + except SynapseError as e: + logger.info("Failed to handle edu %r: %r", edu_type, e) + except Exception as e: + logger.exception("Failed to handle edu %r", edu_type) + + def on_query(self, query_type, args): + handler = self.query_handlers.get(query_type) + if not handler: + logger.warn("No handler registered for query type %s", query_type) + raise NotFoundError("No handler for Query type '%s'" % (query_type,)) + + return handler(args) |