269 lines
9.7 KiB
Python
269 lines
9.7 KiB
Python
# Copyright 2020-2021 The Matrix.org Foundation C.I.C.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import logging
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import os
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from typing import Optional, Tuple
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from twisted.internet.protocol import Factory
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from twisted.protocols.tls import TLSMemoryBIOFactory
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from twisted.web.http import HTTPChannel
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from twisted.web.server import Request
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from synapse.rest import admin
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from synapse.rest.client import login
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from synapse.server import HomeServer
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from tests.http import TestServerTLSConnectionFactory, get_test_ca_cert_file
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from tests.replication._base import BaseMultiWorkerStreamTestCase
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from tests.server import FakeChannel, FakeSite, FakeTransport, make_request
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from tests.test_utils import SMALL_PNG
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logger = logging.getLogger(__name__)
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test_server_connection_factory: Optional[TestServerTLSConnectionFactory] = None
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class MediaRepoShardTestCase(BaseMultiWorkerStreamTestCase):
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"""Checks running multiple media repos work correctly."""
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servlets = [
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admin.register_servlets_for_client_rest_resource,
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login.register_servlets,
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]
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def prepare(self, reactor, clock, hs):
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self.user_id = self.register_user("user", "pass")
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self.access_token = self.login("user", "pass")
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self.reactor.lookups["example.com"] = "1.2.3.4"
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def default_config(self):
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conf = super().default_config()
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conf["federation_custom_ca_list"] = [get_test_ca_cert_file()]
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return conf
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def _get_media_req(
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self, hs: HomeServer, target: str, media_id: str
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) -> Tuple[FakeChannel, Request]:
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"""Request some remote media from the given HS by calling the download
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API.
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This then triggers an outbound request from the HS to the target.
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Returns:
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The channel for the *client* request and the *outbound* request for
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the media which the caller should respond to.
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"""
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resource = hs.get_media_repository_resource().children[b"download"]
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channel = make_request(
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self.reactor,
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FakeSite(resource, self.reactor),
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"GET",
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f"/{target}/{media_id}",
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shorthand=False,
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access_token=self.access_token,
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await_result=False,
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)
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self.pump()
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clients = self.reactor.tcpClients
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self.assertGreaterEqual(len(clients), 1)
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(host, port, client_factory, _timeout, _bindAddress) = clients.pop()
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# build the test server
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server_tls_protocol = _build_test_server(get_connection_factory())
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# now, tell the client protocol factory to build the client protocol (it will be a
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# _WrappingProtocol, around a TLSMemoryBIOProtocol, around an
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# HTTP11ClientProtocol) and wire the output of said protocol up to the server via
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# a FakeTransport.
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#
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# Normally this would be done by the TCP socket code in Twisted, but we are
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# stubbing that out here.
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client_protocol = client_factory.buildProtocol(None)
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client_protocol.makeConnection(
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FakeTransport(server_tls_protocol, self.reactor, client_protocol)
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)
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# tell the server tls protocol to send its stuff back to the client, too
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server_tls_protocol.makeConnection(
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FakeTransport(client_protocol, self.reactor, server_tls_protocol)
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)
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# fish the test server back out of the server-side TLS protocol.
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http_server = server_tls_protocol.wrappedProtocol
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# give the reactor a pump to get the TLS juices flowing.
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self.reactor.pump((0.1,))
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self.assertEqual(len(http_server.requests), 1)
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request = http_server.requests[0]
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self.assertEqual(request.method, b"GET")
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self.assertEqual(
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request.path,
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f"/_matrix/media/r0/download/{target}/{media_id}".encode("utf-8"),
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)
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self.assertEqual(
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request.requestHeaders.getRawHeaders(b"host"), [target.encode("utf-8")]
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)
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return channel, request
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def test_basic(self):
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"""Test basic fetching of remote media from a single worker."""
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hs1 = self.make_worker_hs("synapse.app.generic_worker")
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channel, request = self._get_media_req(hs1, "example.com:443", "ABC123")
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request.setResponseCode(200)
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request.responseHeaders.setRawHeaders(b"Content-Type", [b"text/plain"])
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request.write(b"Hello!")
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request.finish()
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self.pump(0.1)
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self.assertEqual(channel.code, 200)
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self.assertEqual(channel.result["body"], b"Hello!")
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def test_download_simple_file_race(self):
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"""Test that fetching remote media from two different processes at the
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same time works.
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"""
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hs1 = self.make_worker_hs("synapse.app.generic_worker")
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hs2 = self.make_worker_hs("synapse.app.generic_worker")
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start_count = self._count_remote_media()
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# Make two requests without responding to the outbound media requests.
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channel1, request1 = self._get_media_req(hs1, "example.com:443", "ABC123")
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channel2, request2 = self._get_media_req(hs2, "example.com:443", "ABC123")
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# Respond to the first outbound media request and check that the client
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# request is successful
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request1.setResponseCode(200)
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request1.responseHeaders.setRawHeaders(b"Content-Type", [b"text/plain"])
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request1.write(b"Hello!")
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request1.finish()
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self.pump(0.1)
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self.assertEqual(channel1.code, 200, channel1.result["body"])
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self.assertEqual(channel1.result["body"], b"Hello!")
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# Now respond to the second with the same content.
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request2.setResponseCode(200)
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request2.responseHeaders.setRawHeaders(b"Content-Type", [b"text/plain"])
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request2.write(b"Hello!")
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request2.finish()
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self.pump(0.1)
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self.assertEqual(channel2.code, 200, channel2.result["body"])
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self.assertEqual(channel2.result["body"], b"Hello!")
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# We expect only one new file to have been persisted.
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self.assertEqual(start_count + 1, self._count_remote_media())
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def test_download_image_race(self):
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"""Test that fetching remote *images* from two different processes at
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the same time works.
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This checks that races generating thumbnails are handled correctly.
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"""
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hs1 = self.make_worker_hs("synapse.app.generic_worker")
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hs2 = self.make_worker_hs("synapse.app.generic_worker")
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start_count = self._count_remote_thumbnails()
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channel1, request1 = self._get_media_req(hs1, "example.com:443", "PIC1")
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channel2, request2 = self._get_media_req(hs2, "example.com:443", "PIC1")
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request1.setResponseCode(200)
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request1.responseHeaders.setRawHeaders(b"Content-Type", [b"image/png"])
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request1.write(SMALL_PNG)
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request1.finish()
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self.pump(0.1)
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self.assertEqual(channel1.code, 200, channel1.result["body"])
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self.assertEqual(channel1.result["body"], SMALL_PNG)
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request2.setResponseCode(200)
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request2.responseHeaders.setRawHeaders(b"Content-Type", [b"image/png"])
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request2.write(SMALL_PNG)
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request2.finish()
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self.pump(0.1)
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self.assertEqual(channel2.code, 200, channel2.result["body"])
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self.assertEqual(channel2.result["body"], SMALL_PNG)
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# We expect only three new thumbnails to have been persisted.
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self.assertEqual(start_count + 3, self._count_remote_thumbnails())
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def _count_remote_media(self) -> int:
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"""Count the number of files in our remote media directory."""
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path = os.path.join(
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self.hs.get_media_repository().primary_base_path, "remote_content"
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)
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return sum(len(files) for _, _, files in os.walk(path))
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def _count_remote_thumbnails(self) -> int:
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"""Count the number of files in our remote thumbnails directory."""
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path = os.path.join(
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self.hs.get_media_repository().primary_base_path, "remote_thumbnail"
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)
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return sum(len(files) for _, _, files in os.walk(path))
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def get_connection_factory():
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# this needs to happen once, but not until we are ready to run the first test
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global test_server_connection_factory
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if test_server_connection_factory is None:
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test_server_connection_factory = TestServerTLSConnectionFactory(
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sanlist=[b"DNS:example.com"]
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)
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return test_server_connection_factory
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def _build_test_server(connection_creator):
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"""Construct a test server
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This builds an HTTP channel, wrapped with a TLSMemoryBIOProtocol
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Args:
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connection_creator (IOpenSSLServerConnectionCreator): thing to build
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SSL connections
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sanlist (list[bytes]): list of the SAN entries for the cert returned
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by the server
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Returns:
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TLSMemoryBIOProtocol
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"""
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server_factory = Factory.forProtocol(HTTPChannel)
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# Request.finish expects the factory to have a 'log' method.
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server_factory.log = _log_request
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server_tls_factory = TLSMemoryBIOFactory(
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connection_creator, isClient=False, wrappedFactory=server_factory
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)
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return server_tls_factory.buildProtocol(None)
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def _log_request(request):
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"""Implements Factory.log, which is expected by Request.finish"""
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logger.info("Completed request %s", request)
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