mirror of
https://git.anonymousland.org/anonymousland/synapse.git
synced 2024-10-01 11:49:51 -04:00
8aee5aa068
Rather than reimplementing the token parsing in the various places. This will make it easier to change the token parsing to allow access_tokens in HTTP headers.
98 lines
3.8 KiB
Python
98 lines
3.8 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.
|
|
|
|
"""This module contains logic for storing HTTP PUT transactions. This is used
|
|
to ensure idempotency when performing PUTs using the REST API."""
|
|
import logging
|
|
|
|
from synapse.api.auth import get_access_token_from_request
|
|
|
|
logger = logging.getLogger(__name__)
|
|
|
|
|
|
# FIXME: elsewhere we use FooStore to indicate something in the storage layer...
|
|
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. Usually
|
|
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 TxnId: %s", txn_id)
|
|
(last_txn_id, response) = self.transactions[key]
|
|
if txn_id == last_txn_id:
|
|
logger.info("get_response: Returning a response for %s", txn_id)
|
|
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. Usually
|
|
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 TxnId: %s", 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 = get_access_token_from_request(request)
|
|
path_without_txn_id = request.path.rsplit("/", 1)[0]
|
|
return path_without_txn_id + "/" + token
|