diff options
Diffstat (limited to 'synapse')
| -rw-r--r-- | synapse/rest/base.py | 2 | ||||
| -rw-r--r-- | synapse/rest/room.py | 70 | ||||
| -rw-r--r-- | synapse/rest/transactions.py | 96 |
3 files changed, 168 insertions, 0 deletions
diff --git a/synapse/rest/base.py b/synapse/rest/base.py index 6a88cbe866..e855d293e5 100644 --- a/synapse/rest/base.py +++ b/synapse/rest/base.py @@ -15,6 +15,7 @@ """ This module contains base REST classes for constructing REST servlets. """ from synapse.api.urls import CLIENT_PREFIX +from synapse.rest.transactions import HttpTransactionStore import re @@ -59,6 +60,7 @@ class RestServlet(object): self.handlers = hs.get_handlers() self.event_factory = hs.get_event_factory() self.auth = hs.get_auth() + self.txns = HttpTransactionStore() def register(self, http_server): """ Register this servlet with the given HTTP server. """ diff --git a/synapse/rest/room.py b/synapse/rest/room.py index 2d681bd893..731317227d 100644 --- a/synapse/rest/room.py +++ b/synapse/rest/room.py @@ -366,6 +366,51 @@ class RoomTriggerBackfill(RestServlet): defer.returnValue((200, res)) +class RoomMembershipRestServlet(RestServlet): + + def register(self, http_server): + # /rooms/$roomid/[invite|join|leave] + PATTERN = ("/rooms/(?P<room_id>[^/]*)/" + + "(?P<membership_action>join|invite|leave)") + register_txn_path(self, PATTERN, http_server) + + @defer.inlineCallbacks + def on_POST(self, request, room_id, membership_action): + user = yield self.auth.get_user_by_req(request) + + content = _parse_json(request) + + # target user is you unless it is an invite + state_key = user.to_string() + if membership_action == "invite": + if "user_id" not in content: + raise SynapseError(400, "Missing user_id key.") + state_key = content["user_id"] + + event = self.event_factory.create_event( + etype=RoomMemberEvent.TYPE, + content={"membership": unicode(membership_action)}, + room_id=urllib.unquote(room_id), + user_id=user.to_string(), + state_key=state_key + ) + handler = self.handlers.room_member_handler + yield handler.change_membership(event) + defer.returnValue((200, "")) + + @defer.inlineCallbacks + def on_PUT(self, request, room_id, membership_action, txn_id): + try: + defer.returnValue(self.txns.get_client_transaction(request, txn_id)) + except: + pass + + response = yield self.on_POST(request, room_id, membership_action) + + self.txns.store_client_transaction(request, txn_id, response) + defer.returnValue(response) + + def _parse_json(request): try: content = json.loads(request.content.read()) @@ -377,6 +422,30 @@ def _parse_json(request): raise SynapseError(400, "Content not JSON.", errcode=Codes.NOT_JSON) +def register_txn_path(servlet, regex_string, http_server): + """Registers a transaction-based path. + + This registers two paths: + PUT regex_string/$txnid + POST regex_string + + Args: + regex_string (str): The regex string to register. Must NOT have a + trailing $ as this string will be appended to. + http_server : The http_server to register paths with. + """ + http_server.register_path( + "POST", + client_path_pattern(regex_string + "$"), + servlet.on_POST + ) + http_server.register_path( + "PUT", + client_path_pattern(regex_string + "/(?P<txn_id>[^/]*)$"), + servlet.on_PUT + ) + + def register_servlets(hs, http_server): RoomStateEventRestServlet(hs).register(http_server) MessageRestServlet(hs).register(http_server) @@ -386,3 +455,4 @@ def register_servlets(hs, http_server): RoomMessageListRestServlet(hs).register(http_server) JoinRoomAliasServlet(hs).register(http_server) RoomTriggerBackfill(hs).register(http_server) + RoomMembershipRestServlet(hs).register(http_server) diff --git a/synapse/rest/transactions.py b/synapse/rest/transactions.py new file mode 100644 index 0000000000..b8aa1ef11c --- /dev/null +++ b/synapse/rest/transactions.py @@ -0,0 +1,96 @@ +# -*- coding: utf-8 -*- +# Copyright 2014 matrix.org +# +# 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. + +"""This module contains logic for storing HTTP PUT transactions. This is used +to ensure idempotency when performing PUTs using the REST API.""" +import logging + +logger = logging.getLogger(__name__) + + +class HttpTransactionStore(object): + + def __init__(self): + # { key : (txn_id, response) } + self.transactions = {} + + def get_response(self, key, txn_id): + """Retrieve a response for this request. + + Args: + key (str): A transaction-independent key for this request. Typically + this is a combination of the path (without the transaction id) and + the user's access token. + txn_id (str): The transaction ID for this request + Returns: + A tuple of (HTTP response code, response content) or None. + """ + try: + logger.debug("get_response Key: %s TxnId: %s", key, txn_id) + (last_txn_id, response) = self.transactions[key] + if txn_id == last_txn_id: + logger.info("get_response: Returning a response for %s", key) + return response + except KeyError: + pass + return None + + def store_response(self, key, txn_id, response): + """Stores an HTTP response tuple. + + Args: + key (str): A transaction-independent key for this request. Typically + this is a combination of the path (without the transaction id) and + the user's access token. + txn_id (str): The transaction ID for this request. + response (tuple): A tuple of (HTTP response code, response content) + """ + logger.debug("store_response Key: %s TxnId: %s", key, txn_id) + self.transactions[key] = (txn_id, response) + + def store_client_transaction(self, request, txn_id, response): + """Stores the request/response pair of an HTTP transaction. + + Args: + request (twisted.web.http.Request): The twisted HTTP request. This + request must have the transaction ID as the last path segment. + response (tuple): A tuple of (response code, response dict) + txn_id (str): The transaction ID for this request. + """ + self.store_response(self._get_key(request), txn_id, response) + + def get_client_transaction(self, request, txn_id): + """Retrieves a stored response if there was one. + + Args: + request (twisted.web.http.Request): The twisted HTTP request. This + request must have the transaction ID as the last path segment. + txn_id (str): The transaction ID for this request. + Returns: + The response tuple. + Raises: + KeyError if the transaction was not found. + """ + response = self.get_response(self._get_key(request), txn_id) + if response is None: + raise KeyError("Transaction not found.") + return response + + def _get_key(self, request): + token = request.args["access_token"][0] + path_without_txn_id = request.path.rsplit("/", 1)[0] + return path_without_txn_id + "/" + token + + |