From 602684eac5b7acf61e10d7fabed4977635d3fb46 Mon Sep 17 00:00:00 2001 From: Mark Haines Date: Fri, 16 Jan 2015 13:21:14 +0000 Subject: [PATCH] Split transport layer into client and server parts --- synapse/federation/transport/__init__.py | 62 ++++ synapse/federation/transport/client.py | 257 ++++++++++++++++ .../{transport.py => transport/server.py} | 274 +----------------- 3 files changed, 321 insertions(+), 272 deletions(-) create mode 100644 synapse/federation/transport/__init__.py create mode 100644 synapse/federation/transport/client.py rename synapse/federation/{transport.py => transport/server.py} (56%) diff --git a/synapse/federation/transport/__init__.py b/synapse/federation/transport/__init__.py new file mode 100644 index 000000000..6800ac46c --- /dev/null +++ b/synapse/federation/transport/__init__.py @@ -0,0 +1,62 @@ +# -*- coding: utf-8 -*- +# Copyright 2014, 2015 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. + +"""The transport layer is responsible for both sending transactions to remote +home servers and receiving a variety of requests from other home servers. + +By default this is done over HTTPS (and all home servers are required to +support HTTPS), however individual pairings of servers may decide to +communicate over a different (albeit still reliable) protocol. +""" + +from .server import TransportLayerServer +from .client import TransportLayerClient + + +class TransportLayer(TransportLayerServer, TransportLayerClient): + """This is a basic implementation of the transport layer that translates + transactions and other requests to/from HTTP. + + Attributes: + server_name (str): Local home server host + + server (synapse.http.server.HttpServer): the http server to + register listeners on + + client (synapse.http.client.HttpClient): the http client used to + send requests + + request_handler (TransportRequestHandler): The handler to fire when we + receive requests for data. + + received_handler (TransportReceivedHandler): The handler to fire when + we receive data. + """ + + def __init__(self, homeserver, server_name, server, client): + """ + Args: + server_name (str): Local home server host + server (synapse.protocol.http.HttpServer): the http server to + register listeners on + client (synapse.protocol.http.HttpClient): the http client used to + send requests + """ + self.keyring = homeserver.get_keyring() + self.server_name = server_name + self.server = server + self.client = client + self.request_handler = None + self.received_handler = None diff --git a/synapse/federation/transport/client.py b/synapse/federation/transport/client.py new file mode 100644 index 000000000..604ade683 --- /dev/null +++ b/synapse/federation/transport/client.py @@ -0,0 +1,257 @@ +# -*- coding: utf-8 -*- +# Copyright 2014, 2015 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.urls import FEDERATION_PREFIX as PREFIX +from synapse.util.logutils import log_function + +import logging +import json + + +logger = logging.getLogger(__name__) + + +class TransportLayerClient(object): + """Sends federation HTTP requests to other servers""" + + @log_function + def get_context_state(self, destination, context, event_id=None): + """ Requests all state for a given context (i.e. room) from the + given server. + + 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 + + Returns: + Deferred: Results in a dict received from the remote homeserver. + """ + logger.debug("get_context_state dest=%s, context=%s", + destination, context) + + subpath = "/state/%s/" % context + + args = {} + if event_id: + args["event_id"] = event_id + + return self._do_request_for_transaction( + destination, subpath, args=args + ) + + @log_function + def get_event(self, destination, event_id): + """ 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. + + Returns: + Deferred: Results in a dict received from the remote homeserver. + """ + logger.debug("get_pdu dest=%s, event_id=%s", + destination, event_id) + + subpath = "/event/%s/" % (event_id, ) + + return self._do_request_for_transaction(destination, subpath) + + @log_function + def backfill(self, dest, context, event_tuples, limit): + """ Requests `limit` previous PDUs in a given context before list of + PDUs. + + Args: + dest (str) + context (str) + event_tuples (list) + limt (int) + + Returns: + Deferred: Results in a dict received from the remote homeserver. + """ + logger.debug( + "backfill dest=%s, context=%s, event_tuples=%s, limit=%s", + dest, context, repr(event_tuples), str(limit) + ) + + if not event_tuples: + # TODO: raise? + return + + subpath = "/backfill/%s/" % (context,) + + args = { + "v": event_tuples, + "limit": [str(limit)], + } + + return self._do_request_for_transaction( + dest, + subpath, + 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() + + code, response = yield self.client.put_json( + transaction.destination, + path=PREFIX + "/send/%s/" % transaction.transaction_id, + data=json_data, + json_data_callback=json_data_callback, + ) + + logger.debug( + "send_data dest=%s, txid=%s, got response: %d", + transaction.destination, transaction.transaction_id, code + ) + + defer.returnValue((code, response)) + + @defer.inlineCallbacks + @log_function + def make_query(self, destination, query_type, args, retry_on_dns_fail): + path = PREFIX + "/query/%s" % query_type + + response = yield self.client.get_json( + destination=destination, + path=path, + args=args, + retry_on_dns_fail=retry_on_dns_fail, + ) + + defer.returnValue(response) + + @defer.inlineCallbacks + @log_function + def make_join(self, destination, context, user_id, retry_on_dns_fail=True): + path = PREFIX + "/make_join/%s/%s" % (context, user_id,) + + response = yield self.client.get_json( + destination=destination, + path=path, + retry_on_dns_fail=retry_on_dns_fail, + ) + + defer.returnValue(response) + + @defer.inlineCallbacks + @log_function + def send_join(self, destination, context, event_id, content): + path = PREFIX + "/send_join/%s/%s" % ( + context, + event_id, + ) + + code, content = yield self.client.put_json( + destination=destination, + path=path, + data=content, + ) + + if not 200 <= code < 300: + raise RuntimeError("Got %d from send_join", code) + + defer.returnValue(json.loads(content)) + + @defer.inlineCallbacks + @log_function + def send_invite(self, destination, context, event_id, content): + path = PREFIX + "/invite/%s/%s" % ( + context, + event_id, + ) + + code, content = yield self.client.put_json( + destination=destination, + path=path, + data=content, + ) + + if not 200 <= code < 300: + raise RuntimeError("Got %d from send_invite", code) + + defer.returnValue(json.loads(content)) + + @defer.inlineCallbacks + @log_function + def get_event_auth(self, destination, context, event_id): + path = PREFIX + "/event_auth/%s/%s" % ( + context, + event_id, + ) + + response = yield self.client.get_json( + destination=destination, + path=path, + ) + + defer.returnValue(response) + + @defer.inlineCallbacks + @log_function + def _do_request_for_transaction(self, destination, subpath, args={}): + """ + Args: + destination (str) + path (str) + args (dict): This is parsed directly to the HttpClient. + + Returns: + Deferred: Results in a dict. + """ + + data = yield self.client.get_json( + destination, + path=PREFIX + subpath, + args=args, + ) + + # Add certain keys to the JSON, ready for decoding as a Transaction + data.update( + origin=destination, + destination=self.server_name, + transaction_id=None + ) + + defer.returnValue(data) diff --git a/synapse/federation/transport.py b/synapse/federation/transport/server.py similarity index 56% rename from synapse/federation/transport.py rename to synapse/federation/transport/server.py index 1f0f06e0f..34b50def7 100644 --- a/synapse/federation/transport.py +++ b/synapse/federation/transport/server.py @@ -13,14 +13,6 @@ # See the License for the specific language governing permissions and # limitations under the License. -"""The transport layer is responsible for both sending transactions to remote -home servers and receiving a variety of requests from other home servers. - -Typically, this is done over HTTP (and all home servers are required to -support HTTP), however individual pairings of servers may decide to communicate -over a different (albeit still reliable) protocol. -""" - from twisted.internet import defer from synapse.api.urls import FEDERATION_PREFIX as PREFIX @@ -35,241 +27,8 @@ import re logger = logging.getLogger(__name__) -class TransportLayer(object): - """This is a basic implementation of the transport layer that translates - transactions and other requests to/from HTTP. - - Attributes: - server_name (str): Local home server host - - server (synapse.http.server.HttpServer): the http server to - register listeners on - - client (synapse.http.client.HttpClient): the http client used to - send requests - - request_handler (TransportRequestHandler): The handler to fire when we - receive requests for data. - - received_handler (TransportReceivedHandler): The handler to fire when - we receive data. - """ - - def __init__(self, homeserver, server_name, server, client): - """ - Args: - server_name (str): Local home server host - server (synapse.protocol.http.HttpServer): the http server to - register listeners on - client (synapse.protocol.http.HttpClient): the http client used to - send requests - """ - self.keyring = homeserver.get_keyring() - self.server_name = server_name - self.server = server - self.client = client - self.request_handler = None - self.received_handler = None - - @log_function - def get_context_state(self, destination, context, event_id=None): - """ Requests all state for a given context (i.e. room) from the - given server. - - 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 - - Returns: - Deferred: Results in a dict received from the remote homeserver. - """ - logger.debug("get_context_state dest=%s, context=%s", - destination, context) - - subpath = "/state/%s/" % context - - args = {} - if event_id: - args["event_id"] = event_id - - return self._do_request_for_transaction( - destination, subpath, args=args - ) - - @log_function - def get_event(self, destination, event_id): - """ 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. - - Returns: - Deferred: Results in a dict received from the remote homeserver. - """ - logger.debug("get_pdu dest=%s, event_id=%s", - destination, event_id) - - subpath = "/event/%s/" % (event_id, ) - - return self._do_request_for_transaction(destination, subpath) - - @log_function - def backfill(self, dest, context, event_tuples, limit): - """ Requests `limit` previous PDUs in a given context before list of - PDUs. - - Args: - dest (str) - context (str) - event_tuples (list) - limt (int) - - Returns: - Deferred: Results in a dict received from the remote homeserver. - """ - logger.debug( - "backfill dest=%s, context=%s, event_tuples=%s, limit=%s", - dest, context, repr(event_tuples), str(limit) - ) - - if not event_tuples: - # TODO: raise? - return - - subpath = "/backfill/%s/" % (context,) - - args = { - "v": event_tuples, - "limit": [str(limit)], - } - - return self._do_request_for_transaction( - dest, - subpath, - 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() - - code, response = yield self.client.put_json( - transaction.destination, - path=PREFIX + "/send/%s/" % transaction.transaction_id, - data=json_data, - json_data_callback=json_data_callback, - ) - - logger.debug( - "send_data dest=%s, txid=%s, got response: %d", - transaction.destination, transaction.transaction_id, code - ) - - defer.returnValue((code, response)) - - @defer.inlineCallbacks - @log_function - def make_query(self, destination, query_type, args, retry_on_dns_fail): - path = PREFIX + "/query/%s" % query_type - - response = yield self.client.get_json( - destination=destination, - path=path, - args=args, - retry_on_dns_fail=retry_on_dns_fail, - ) - - defer.returnValue(response) - - @defer.inlineCallbacks - @log_function - def make_join(self, destination, context, user_id, retry_on_dns_fail=True): - path = PREFIX + "/make_join/%s/%s" % (context, user_id,) - - response = yield self.client.get_json( - destination=destination, - path=path, - retry_on_dns_fail=retry_on_dns_fail, - ) - - defer.returnValue(response) - - @defer.inlineCallbacks - @log_function - def send_join(self, destination, context, event_id, content): - path = PREFIX + "/send_join/%s/%s" % ( - context, - event_id, - ) - - code, content = yield self.client.put_json( - destination=destination, - path=path, - data=content, - ) - - if not 200 <= code < 300: - raise RuntimeError("Got %d from send_join", code) - - defer.returnValue(json.loads(content)) - - @defer.inlineCallbacks - @log_function - def send_invite(self, destination, context, event_id, content): - path = PREFIX + "/invite/%s/%s" % ( - context, - event_id, - ) - - code, content = yield self.client.put_json( - destination=destination, - path=path, - data=content, - ) - - if not 200 <= code < 300: - raise RuntimeError("Got %d from send_invite", code) - - defer.returnValue(json.loads(content)) - - @defer.inlineCallbacks - @log_function - def get_event_auth(self, destination, context, event_id): - path = PREFIX + "/event_auth/%s/%s" % ( - context, - event_id, - ) - - response = yield self.client.get_json( - destination=destination, - path=path, - ) - - defer.returnValue(response) +class TransportLayerServer(object): + """Handles incoming federation HTTP requests""" @defer.inlineCallbacks def _authenticate_request(self, request): @@ -373,8 +132,6 @@ class TransportLayer(object): """ self.request_handler = handler - # TODO(markjh): Namespace the federation URI paths - # This is for when someone asks us for everything since version X self.server.register_path( "GET", @@ -528,33 +285,6 @@ class TransportLayer(object): defer.returnValue((code, response)) - @defer.inlineCallbacks - @log_function - def _do_request_for_transaction(self, destination, subpath, args={}): - """ - Args: - destination (str) - path (str) - args (dict): This is parsed directly to the HttpClient. - - Returns: - Deferred: Results in a dict. - """ - - data = yield self.client.get_json( - destination, - path=PREFIX + subpath, - args=args, - ) - - # Add certain keys to the JSON, ready for decoding as a Transaction - data.update( - origin=destination, - destination=self.server_name, - transaction_id=None - ) - - defer.returnValue(data) @log_function def _on_backfill_request(self, origin, context, v_list, limits):