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# Copyright 2020-2021 The Matrix.org Foundation C.I.C.
#
# 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.
import logging
import os
from typing import Any, Optional, Tuple
from twisted.internet.protocol import Factory
from twisted.test.proto_helpers import MemoryReactor
from twisted.web.http import HTTPChannel
from twisted.web.server import Request
from synapse.rest import admin
from synapse.rest.client import login
from synapse.server import HomeServer
from synapse.util import Clock
from tests.http import (
TestServerTLSConnectionFactory,
get_test_ca_cert_file,
wrap_server_factory_for_tls,
)
from tests.replication._base import BaseMultiWorkerStreamTestCase
from tests.server import FakeChannel, FakeTransport, make_request
from tests.test_utils import SMALL_PNG
logger = logging.getLogger(__name__)
test_server_connection_factory: Optional[TestServerTLSConnectionFactory] = None
class MediaRepoShardTestCase(BaseMultiWorkerStreamTestCase):
"""Checks running multiple media repos work correctly."""
servlets = [
admin.register_servlets_for_client_rest_resource,
login.register_servlets,
]
def prepare(self, reactor: MemoryReactor, clock: Clock, hs: HomeServer) -> None:
self.user_id = self.register_user("user", "pass")
self.access_token = self.login("user", "pass")
self.reactor.lookups["example.com"] = "1.2.3.4"
def default_config(self) -> dict:
conf = super().default_config()
conf["federation_custom_ca_list"] = [get_test_ca_cert_file()]
return conf
def make_worker_hs(
self, worker_app: str, extra_config: Optional[dict] = None, **kwargs: Any
) -> HomeServer:
worker_hs = super().make_worker_hs(worker_app, extra_config, **kwargs)
# Force the media paths onto the replication resource.
worker_hs.get_media_repository_resource().register_servlets(
self._hs_to_site[worker_hs].resource, worker_hs
)
return worker_hs
def _get_media_req(
self, hs: HomeServer, target: str, media_id: str
) -> Tuple[FakeChannel, Request]:
"""Request some remote media from the given HS by calling the download
API.
This then triggers an outbound request from the HS to the target.
Returns:
The channel for the *client* request and the *outbound* request for
the media which the caller should respond to.
"""
channel = make_request(
self.reactor,
self._hs_to_site[hs],
"GET",
f"/_matrix/media/r0/download/{target}/{media_id}",
shorthand=False,
access_token=self.access_token,
await_result=False,
)
self.pump()
clients = self.reactor.tcpClients
self.assertGreaterEqual(len(clients), 1)
(host, port, client_factory, _timeout, _bindAddress) = clients.pop()
# build the test server
server_factory = Factory.forProtocol(HTTPChannel)
# Request.finish expects the factory to have a 'log' method.
server_factory.log = _log_request
server_tls_protocol = wrap_server_factory_for_tls(
server_factory, self.reactor, sanlist=[b"DNS:example.com"]
).buildProtocol(None)
# now, tell the client protocol factory to build the client protocol (it will be a
# _WrappingProtocol, around a TLSMemoryBIOProtocol, around an
# HTTP11ClientProtocol) and wire the output of said protocol up to the server via
# a FakeTransport.
#
# Normally this would be done by the TCP socket code in Twisted, but we are
# stubbing that out here.
client_protocol = client_factory.buildProtocol(None)
client_protocol.makeConnection(
FakeTransport(server_tls_protocol, self.reactor, client_protocol)
)
# tell the server tls protocol to send its stuff back to the client, too
server_tls_protocol.makeConnection(
FakeTransport(client_protocol, self.reactor, server_tls_protocol)
)
# fish the test server back out of the server-side TLS protocol.
http_server: HTTPChannel = server_tls_protocol.wrappedProtocol
# give the reactor a pump to get the TLS juices flowing.
self.reactor.pump((0.1,))
self.assertEqual(len(http_server.requests), 1)
request = http_server.requests[0]
self.assertEqual(request.method, b"GET")
self.assertEqual(
request.path,
f"/_matrix/media/v3/download/{target}/{media_id}".encode(),
)
self.assertEqual(
request.requestHeaders.getRawHeaders(b"host"), [target.encode("utf-8")]
)
return channel, request
def test_basic(self) -> None:
"""Test basic fetching of remote media from a single worker."""
hs1 = self.make_worker_hs("synapse.app.generic_worker")
channel, request = self._get_media_req(hs1, "example.com:443", "ABC123")
request.setResponseCode(200)
request.responseHeaders.setRawHeaders(b"Content-Type", [b"text/plain"])
request.write(b"Hello!")
request.finish()
self.pump(0.1)
self.assertEqual(channel.code, 200)
self.assertEqual(channel.result["body"], b"Hello!")
def test_download_simple_file_race(self) -> None:
"""Test that fetching remote media from two different processes at the
same time works.
"""
hs1 = self.make_worker_hs("synapse.app.generic_worker")
hs2 = self.make_worker_hs("synapse.app.generic_worker")
start_count = self._count_remote_media()
# Make two requests without responding to the outbound media requests.
channel1, request1 = self._get_media_req(hs1, "example.com:443", "ABC123")
channel2, request2 = self._get_media_req(hs2, "example.com:443", "ABC123")
# Respond to the first outbound media request and check that the client
# request is successful
request1.setResponseCode(200)
request1.responseHeaders.setRawHeaders(b"Content-Type", [b"text/plain"])
request1.write(b"Hello!")
request1.finish()
self.pump(0.1)
self.assertEqual(channel1.code, 200, channel1.result["body"])
self.assertEqual(channel1.result["body"], b"Hello!")
# Now respond to the second with the same content.
request2.setResponseCode(200)
request2.responseHeaders.setRawHeaders(b"Content-Type", [b"text/plain"])
request2.write(b"Hello!")
request2.finish()
self.pump(0.1)
self.assertEqual(channel2.code, 200, channel2.result["body"])
self.assertEqual(channel2.result["body"], b"Hello!")
# We expect only one new file to have been persisted.
self.assertEqual(start_count + 1, self._count_remote_media())
def test_download_image_race(self) -> None:
"""Test that fetching remote *images* from two different processes at
the same time works.
This checks that races generating thumbnails are handled correctly.
"""
hs1 = self.make_worker_hs("synapse.app.generic_worker")
hs2 = self.make_worker_hs("synapse.app.generic_worker")
start_count = self._count_remote_thumbnails()
channel1, request1 = self._get_media_req(hs1, "example.com:443", "PIC1")
channel2, request2 = self._get_media_req(hs2, "example.com:443", "PIC1")
request1.setResponseCode(200)
request1.responseHeaders.setRawHeaders(b"Content-Type", [b"image/png"])
request1.write(SMALL_PNG)
request1.finish()
self.pump(0.1)
self.assertEqual(channel1.code, 200, channel1.result["body"])
self.assertEqual(channel1.result["body"], SMALL_PNG)
request2.setResponseCode(200)
request2.responseHeaders.setRawHeaders(b"Content-Type", [b"image/png"])
request2.write(SMALL_PNG)
request2.finish()
self.pump(0.1)
self.assertEqual(channel2.code, 200, channel2.result["body"])
self.assertEqual(channel2.result["body"], SMALL_PNG)
# We expect only three new thumbnails to have been persisted.
self.assertEqual(start_count + 3, self._count_remote_thumbnails())
def _count_remote_media(self) -> int:
"""Count the number of files in our remote media directory."""
path = os.path.join(
self.hs.get_media_repository().primary_base_path, "remote_content"
)
return sum(len(files) for _, _, files in os.walk(path))
def _count_remote_thumbnails(self) -> int:
"""Count the number of files in our remote thumbnails directory."""
path = os.path.join(
self.hs.get_media_repository().primary_base_path, "remote_thumbnail"
)
return sum(len(files) for _, _, files in os.walk(path))
def _log_request(request: Request) -> None:
"""Implements Factory.log, which is expected by Request.finish"""
logger.info("Completed request %s", request)
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