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Make the http server handle coroutine-making REST servlets (#5475)

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code_spécifique_watcha
Amber Brown 5 years ago committed by GitHub
parent c7ff297dde
commit f40a7dc41f
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12 changed files with 162 additions and 174 deletions
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  1. 1
      changelog.d/5475.misc
  2. 77
      synapse/http/server.py
  3. 35
      synapse/rest/consent/consent_resource.py
  4. 28
      synapse/rest/key/v2/remote_key_resource.py
  5. 21
      synapse/rest/media/v1/config_resource.py
  6. 26
      synapse/rest/media/v1/download_resource.py
  7. 18
      synapse/rest/media/v1/preview_url_resource.py
  8. 27
      synapse/rest/media/v1/thumbnail_resource.py
  9. 23
      synapse/rest/media/v1/upload_resource.py
  10. 15
      synapse/rest/saml2/response_resource.py
  11. 25
      tests/rest/media/v1/test_media_storage.py
  12. 40
      tests/unittest.py

1
changelog.d/5475.misc
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@ -0,0 +1 @@
Synapse can now handle RestServlets that return coroutines.

77
synapse/http/server.py
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@ -16,10 +16,11 @@
import cgi
import collections
import http.client
import logging
from six import PY3
from six.moves import http_client, urllib
import types
import urllib
from io import BytesIO
from canonicaljson import encode_canonical_json, encode_pretty_printed_json, json
@ -41,11 +42,6 @@ from synapse.api.errors import (
from synapse.util.caches import intern_dict
from synapse.util.logcontext import preserve_fn
if PY3:
from io import BytesIO
else:
from cStringIO import StringIO as BytesIO
logger = logging.getLogger(__name__)
HTML_ERROR_TEMPLATE = """<!DOCTYPE html>
@ -75,10 +71,9 @@ def wrap_json_request_handler(h):
deferred fails with any other type of error we send a 500 reponse.
"""
@defer.inlineCallbacks
def wrapped_request_handler(self, request):
async def wrapped_request_handler(self, request):
try:
yield h(self, request)
await h(self, request)
except SynapseError as e:
code = e.code
logger.info("%s SynapseError: %s - %s", request, code, e.msg)
@ -142,10 +137,12 @@ def wrap_html_request_handler(h):
where "request" must be a SynapseRequest.
"""
def wrapped_request_handler(self, request):
d = defer.maybeDeferred(h, self, request)
d.addErrback(_return_html_error, request)
return d
async def wrapped_request_handler(self, request):
try:
return await h(self, request)
except Exception:
f = failure.Failure()
return _return_html_error(f, request)
return wrap_async_request_handler(wrapped_request_handler)
@ -171,7 +168,7 @@ def _return_html_error(f, request):
exc_info=(f.type, f.value, f.getTracebackObject()),
)
else:
code = http_client.INTERNAL_SERVER_ERROR
code = http.client.INTERNAL_SERVER_ERROR
msg = "Internal server error"
logger.error(
@ -201,10 +198,9 @@ def wrap_async_request_handler(h):
logged until the deferred completes.
"""
@defer.inlineCallbacks
def wrapped_async_request_handler(self, request):
async def wrapped_async_request_handler(self, request):
with request.processing():
yield h(self, request)
await h(self, request)
# we need to preserve_fn here, because the synchronous render method won't yield for
# us (obviously)
@ -270,12 +266,11 @@ class JsonResource(HttpServer, resource.Resource):
def render(self, request):
""" This gets called by twisted every time someone sends us a request.
"""
self._async_render(request)
defer.ensureDeferred(self._async_render(request))
return NOT_DONE_YET
@wrap_json_request_handler
@defer.inlineCallbacks
def _async_render(self, request):
async def _async_render(self, request):
""" This gets called from render() every time someone sends us a request.
This checks if anyone has registered a callback for that method and
path.
@ -292,26 +287,19 @@ class JsonResource(HttpServer, resource.Resource):
# Now trigger the callback. If it returns a response, we send it
# here. If it throws an exception, that is handled by the wrapper
# installed by @request_handler.
def _unquote(s):
if PY3:
# On Python 3, unquote is unicode -> unicode
return urllib.parse.unquote(s)
else:
# On Python 2, unquote is bytes -> bytes We need to encode the
# URL again (as it was decoded by _get_handler_for request), as
# ASCII because it's a URL, and then decode it to get the UTF-8
# characters that were quoted.
return urllib.parse.unquote(s.encode("ascii")).decode("utf8")
kwargs = intern_dict(
{
name: _unquote(value) if value else value
name: urllib.parse.unquote(value) if value else value
for name, value in group_dict.items()
}
)
callback_return = yield callback(request, **kwargs)
callback_return = callback(request, **kwargs)
# Is it synchronous? We'll allow this for now.
if isinstance(callback_return, (defer.Deferred, types.CoroutineType)):
callback_return = await callback_return
if callback_return is not None:
code, response = callback_return
self._send_response(request, code, response)
@ -360,6 +348,23 @@ class JsonResource(HttpServer, resource.Resource):
)
class DirectServeResource(resource.Resource):
def render(self, request):
"""
Render the request, using an asynchronous render handler if it exists.
"""
render_callback_name = "_async_render_" + request.method.decode("ascii")
if hasattr(self, render_callback_name):
# Call the handler
callback = getattr(self, render_callback_name)
defer.ensureDeferred(callback(request))
return NOT_DONE_YET
else:
super().render(request)
def _options_handler(request):
"""Request handler for OPTIONS requests

35
synapse/rest/consent/consent_resource.py
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@ -23,13 +23,13 @@ from six.moves import http_client
import jinja2
from jinja2 import TemplateNotFound
from twisted.internet import defer
from twisted.web.resource import Resource
from twisted.web.server import NOT_DONE_YET
from synapse.api.errors import NotFoundError, StoreError, SynapseError
from synapse.config import ConfigError
from synapse.http.server import finish_request, wrap_html_request_handler
from synapse.http.server import (
DirectServeResource,
finish_request,
wrap_html_request_handler,
)
from synapse.http.servlet import parse_string
from synapse.types import UserID
@ -47,7 +47,7 @@ else:
return a == b
class ConsentResource(Resource):
class ConsentResource(DirectServeResource):
"""A twisted Resource to display a privacy policy and gather consent to it
When accessed via GET, returns the privacy policy via a template.
@ -87,7 +87,7 @@ class ConsentResource(Resource):
Args:
hs (synapse.server.HomeServer): homeserver
"""
Resource.__init__(self)
super().__init__()
self.hs = hs
self.store = hs.get_datastore()
@ -118,18 +118,12 @@ class ConsentResource(Resource):
self._hmac_secret = hs.config.form_secret.encode("utf-8")
def render_GET(self, request):
self._async_render_GET(request)
return NOT_DONE_YET
@wrap_html_request_handler
@defer.inlineCallbacks
def _async_render_GET(self, request):
async def _async_render_GET(self, request):
"""
Args:
request (twisted.web.http.Request):
"""
version = parse_string(request, "v", default=self._default_consent_version)
username = parse_string(request, "u", required=False, default="")
userhmac = None
@ -145,7 +139,7 @@ class ConsentResource(Resource):
else:
qualified_user_id = UserID(username, self.hs.hostname).to_string()
u = yield self.store.get_user_by_id(qualified_user_id)
u = await self.store.get_user_by_id(qualified_user_id)
if u is None:
raise NotFoundError("Unknown user")
@ -165,13 +159,8 @@ class ConsentResource(Resource):
except TemplateNotFound:
raise NotFoundError("Unknown policy version")
def render_POST(self, request):
self._async_render_POST(request)
return NOT_DONE_YET
@wrap_html_request_handler
@defer.inlineCallbacks
def _async_render_POST(self, request):
async def _async_render_POST(self, request):
"""
Args:
request (twisted.web.http.Request):
@ -188,12 +177,12 @@ class ConsentResource(Resource):
qualified_user_id = UserID(username, self.hs.hostname).to_string()
try:
yield self.store.user_set_consent_version(qualified_user_id, version)
await self.store.user_set_consent_version(qualified_user_id, version)
except StoreError as e:
if e.code != 404:
raise
raise NotFoundError("Unknown user")
yield self.registration_handler.post_consent_actions(qualified_user_id)
await self.registration_handler.post_consent_actions(qualified_user_id)
try:
self._render_template(request, "success.html")

28
synapse/rest/key/v2/remote_key_resource.py
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@ -16,18 +16,20 @@ import logging
from io import BytesIO
from twisted.internet import defer
from twisted.web.resource import Resource
from twisted.web.server import NOT_DONE_YET
from synapse.api.errors import Codes, SynapseError
from synapse.crypto.keyring import ServerKeyFetcher
from synapse.http.server import respond_with_json_bytes, wrap_json_request_handler
from synapse.http.server import (
DirectServeResource,
respond_with_json_bytes,
wrap_json_request_handler,
)
from synapse.http.servlet import parse_integer, parse_json_object_from_request
logger = logging.getLogger(__name__)
class RemoteKey(Resource):
class RemoteKey(DirectServeResource):
"""HTTP resource for retreiving the TLS certificate and NACL signature
verification keys for a collection of servers. Checks that the reported
X.509 TLS certificate matches the one used in the HTTPS connection. Checks
@ -94,13 +96,8 @@ class RemoteKey(Resource):
self.clock = hs.get_clock()
self.federation_domain_whitelist = hs.config.federation_domain_whitelist
def render_GET(self, request):
self.async_render_GET(request)
return NOT_DONE_YET
@wrap_json_request_handler
@defer.inlineCallbacks
def async_render_GET(self, request):
async def _async_render_GET(self, request):
if len(request.postpath) == 1:
server, = request.postpath
query = {server.decode("ascii"): {}}
@ -114,20 +111,15 @@ class RemoteKey(Resource):
else:
raise SynapseError(404, "Not found %r" % request.postpath, Codes.NOT_FOUND)
yield self.query_keys(request, query, query_remote_on_cache_miss=True)
def render_POST(self, request):
self.async_render_POST(request)
return NOT_DONE_YET
await self.query_keys(request, query, query_remote_on_cache_miss=True)
@wrap_json_request_handler
@defer.inlineCallbacks
def async_render_POST(self, request):
async def _async_render_POST(self, request):
content = parse_json_object_from_request(request)
query = content["server_keys"]
yield self.query_keys(request, query, query_remote_on_cache_miss=True)
await self.query_keys(request, query, query_remote_on_cache_miss=True)
@defer.inlineCallbacks
def query_keys(self, request, query, query_remote_on_cache_miss=False):

21
synapse/rest/media/v1/config_resource.py
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@ -14,31 +14,28 @@
# limitations under the License.
#
from twisted.internet import defer
from twisted.web.resource import Resource
from twisted.web.server import NOT_DONE_YET
from synapse.http.server import respond_with_json, wrap_json_request_handler
from synapse.http.server import (
DirectServeResource,
respond_with_json,
wrap_json_request_handler,
)
class MediaConfigResource(Resource):
class MediaConfigResource(DirectServeResource):
isLeaf = True
def __init__(self, hs):
Resource.__init__(self)
super().__init__()
config = hs.get_config()
self.clock = hs.get_clock()
self.auth = hs.get_auth()
self.limits_dict = {"m.upload.size": config.max_upload_size}
def render_GET(self, request):
self._async_render_GET(request)
return NOT_DONE_YET
@wrap_json_request_handler
@defer.inlineCallbacks
def _async_render_GET(self, request):
yield self.auth.get_user_by_req(request)
async def _async_render_GET(self, request):
await self.auth.get_user_by_req(request)
respond_with_json(request, 200, self.limits_dict, send_cors=True)
def render_OPTIONS(self, request):

26
synapse/rest/media/v1/download_resource.py
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@ -14,37 +14,31 @@
# limitations under the License.
import logging
from twisted.internet import defer
from twisted.web.resource import Resource
from twisted.web.server import NOT_DONE_YET
import synapse.http.servlet
from synapse.http.server import set_cors_headers, wrap_json_request_handler
from synapse.http.server import (
DirectServeResource,
set_cors_headers,
wrap_json_request_handler,
)
from ._base import parse_media_id, respond_404
logger = logging.getLogger(__name__)
class DownloadResource(Resource):
class DownloadResource(DirectServeResource):
isLeaf = True
def __init__(self, hs, media_repo):
Resource.__init__(self)
super().__init__()
self.media_repo = media_repo
self.server_name = hs.hostname
# this is expected by @wrap_json_request_handler
self.clock = hs.get_clock()
def render_GET(self, request):
self._async_render_GET(request)
return NOT_DONE_YET
@wrap_json_request_handler
@defer.inlineCallbacks
def _async_render_GET(self, request):
async def _async_render_GET(self, request):
set_cors_headers(request)
request.setHeader(
b"Content-Security-Policy",
@ -58,7 +52,7 @@ class DownloadResource(Resource):
)
server_name, media_id, name = parse_media_id(request)
if server_name == self.server_name:
yield self.media_repo.get_local_media(request, media_id, name)
await self.media_repo.get_local_media(request, media_id, name)
else:
allow_remote = synapse.http.servlet.parse_boolean(
request, "allow_remote", default=True
@ -72,4 +66,4 @@ class DownloadResource(Resource):
respond_404(request)
return
yield self.media_repo.get_remote_media(request, server_name, media_id, name)
await self.media_repo.get_remote_media(request, server_name, media_id, name)

18
synapse/rest/media/v1/preview_url_resource.py
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@ -32,12 +32,11 @@ from canonicaljson import json
from twisted.internet import defer
from twisted.internet.error import DNSLookupError
from twisted.web.resource import Resource
from twisted.web.server import NOT_DONE_YET
from synapse.api.errors import Codes, SynapseError
from synapse.http.client import SimpleHttpClient
from synapse.http.server import (
DirectServeResource,
respond_with_json,
respond_with_json_bytes,
wrap_json_request_handler,
@ -58,11 +57,11 @@ _charset_match = re.compile(br"<\s*meta[^>]*charset\s*=\s*([a-z0-9-]+)", flags=r
_content_type_match = re.compile(r'.*; *charset="?(.*?)"?(;|$)', flags=re.I)
class PreviewUrlResource(Resource):
class PreviewUrlResource(DirectServeResource):
isLeaf = True
def __init__(self, hs, media_repo, media_storage):
Resource.__init__(self)
super().__init__()
self.auth = hs.get_auth()
self.clock = hs.get_clock()
@ -98,16 +97,11 @@ class PreviewUrlResource(Resource):
def render_OPTIONS(self, request):
return respond_with_json(request, 200, {}, send_cors=True)
def render_GET(self, request):
self._async_render_GET(request)
return NOT_DONE_YET
@wrap_json_request_handler
@defer.inlineCallbacks
def _async_render_GET(self, request):
async def _async_render_GET(self, request):
# XXX: if get_user_by_req fails, what should we do in an async render?
requester = yield self.auth.get_user_by_req(request)
requester = await self.auth.get_user_by_req(request)
url = parse_string(request, "url")
if b"ts" in request.args:
ts = parse_integer(request, "ts")
@ -159,7 +153,7 @@ class PreviewUrlResource(Resource):
else:
logger.info("Returning cached response")
og = yield make_deferred_yieldable(observable.observe())
og = await make_deferred_yieldable(defer.maybeDeferred(observable.observe))
respond_with_json_bytes(request, 200, og, send_cors=True)
@defer.inlineCallbacks

27
synapse/rest/media/v1/thumbnail_resource.py
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@ -17,10 +17,12 @@
import logging
from twisted.internet import defer
from twisted.web.resource import Resource
from twisted.web.server import NOT_DONE_YET
from synapse.http.server import set_cors_headers, wrap_json_request_handler
from synapse.http.server import (
DirectServeResource,
set_cors_headers,
wrap_json_request_handler,
)
from synapse.http.servlet import parse_integer, parse_string
from ._base import (
@ -34,11 +36,11 @@ from ._base import (
logger = logging.getLogger(__name__)
class ThumbnailResource(Resource):
class ThumbnailResource(DirectServeResource):
isLeaf = True
def __init__(self, hs, media_repo, media_storage):
Resource.__init__(self)
super().__init__()
self.store = hs.get_datastore()
self.media_repo = media_repo
@ -47,13 +49,8 @@ class ThumbnailResource(Resource):
self.server_name = hs.hostname
self.clock = hs.get_clock()
def render_GET(self, request):
self._async_render_GET(request)
return NOT_DONE_YET
@wrap_json_request_handler
@defer.inlineCallbacks
def _async_render_GET(self, request):
async def _async_render_GET(self, request):
set_cors_headers(request)
server_name, media_id, _ = parse_media_id(request)
width = parse_integer(request, "width", required=True)
@ -63,21 +60,21 @@ class ThumbnailResource(Resource):
if server_name == self.server_name:
if self.dynamic_thumbnails:
yield self._select_or_generate_local_thumbnail(
await self._select_or_generate_local_thumbnail(
request, media_id, width, height, method, m_type
)
else:
yield self._respond_local_thumbnail(
await self._respond_local_thumbnail(
request, media_id, width, height, method, m_type
)
self.media_repo.mark_recently_accessed(None, media_id)
else:
if self.dynamic_thumbnails:
yield self._select_or_generate_remote_thumbnail(
await self._select_or_generate_remote_thumbnail(
request, server_name, media_id, width, height, method, m_type
)
else:
yield self._respond_remote_thumbnail(
await self._respond_remote_thumbnail(
request, server_name, media_id, width, height, method, m_type
)
self.media_repo.mark_recently_accessed(server_name, media_id)

23
synapse/rest/media/v1/upload_resource.py
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@ -15,22 +15,24 @@
import logging
from twisted.internet import defer
from twisted.web.resource import Resource
from twisted.web.server import NOT_DONE_YET
from synapse.api.errors import SynapseError
from synapse.http.server import respond_with_json, wrap_json_request_handler
from synapse.http.server import (
DirectServeResource,
respond_with_json,
wrap_json_request_handler,
)
from synapse.http.servlet import parse_string
logger = logging.getLogger(__name__)
class UploadResource(Resource):
class UploadResource(DirectServeResource):
isLeaf = True
def __init__(self, hs, media_repo):
Resource.__init__(self)
super().__init__()
self.media_repo = media_repo
self.filepaths = media_repo.filepaths
@ -41,18 +43,13 @@ class UploadResource(Resource):
self.max_upload_size = hs.config.max_upload_size
self.clock = hs.get_clock()
def render_POST(self, request):
self._async_render_POST(request)
return NOT_DONE_YET
def render_OPTIONS(self, request):
respond_with_json(request, 200, {}, send_cors=True)
return NOT_DONE_YET
@wrap_json_request_handler
@defer.inlineCallbacks
def _async_render_POST(self, request):
requester = yield self.auth.get_user_by_req(request)
async def _async_render_POST(self, request):
requester = await self.auth.get_user_by_req(request)
# TODO: The checks here are a bit late. The content will have
# already been uploaded to a tmp file at this point
content_length = request.getHeader(b"Content-Length").decode("ascii")
@ -81,7 +78,7 @@ class UploadResource(Resource):
# disposition = headers.getRawHeaders(b"Content-Disposition")[0]
# TODO(markjh): parse content-dispostion
content_uri = yield self.media_repo.create_content(
content_uri = await self.media_repo.create_content(
media_type, upload_name, request.content, content_length, requester.user
)

15
synapse/rest/saml2/response_resource.py
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@ -18,34 +18,27 @@ import logging
import saml2
from saml2.client import Saml2Client
from twisted.web.resource import Resource
from twisted.web.server import NOT_DONE_YET
from synapse.api.errors import CodeMessageException
from synapse.http.server import wrap_html_request_handler
from synapse.http.server import DirectServeResource, wrap_html_request_handler
from synapse.http.servlet import parse_string
from synapse.rest.client.v1.login import SSOAuthHandler
logger = logging.getLogger(__name__)
class SAML2ResponseResource(Resource):
class SAML2ResponseResource(DirectServeResource):
"""A Twisted web resource which handles the SAML response"""
isLeaf = 1
def __init__(self, hs):
Resource.__init__(self)
super().__init__()
self._saml_client = Saml2Client(hs.config.saml2_sp_config)
self._sso_auth_handler = SSOAuthHandler(hs)
def render_POST(self, request):
self._async_render_POST(request)
return NOT_DONE_YET
@wrap_html_request_handler
def _async_render_POST(self, request):
async def _async_render_POST(self, request):
resp_bytes = parse_string(request, "SAMLResponse", required=True)
relay_state = parse_string(request, "RelayState", required=True)

25
tests/rest/media/v1/test_media_storage.py
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@ -22,7 +22,6 @@ from binascii import unhexlify
from mock import Mock
from six.moves.urllib import parse
from twisted.internet import defer, reactor
from twisted.internet.defer import Deferred
from synapse.rest.media.v1._base import FileInfo
@ -34,15 +33,17 @@ from synapse.util.logcontext import make_deferred_yieldable
from tests import unittest
class MediaStorageTests(unittest.TestCase):
def setUp(self):
class MediaStorageTests(unittest.HomeserverTestCase):
needs_threadpool = True
def prepare(self, reactor, clock, hs):
self.test_dir = tempfile.mkdtemp(prefix="synapse-tests-")
self.addCleanup(shutil.rmtree, self.test_dir)
self.primary_base_path = os.path.join(self.test_dir, "primary")
self.secondary_base_path = os.path.join(self.test_dir, "secondary")
hs = Mock()
hs.get_reactor = Mock(return_value=reactor)
hs.config.media_store_path = self.primary_base_path
storage_providers = [FileStorageProviderBackend(hs, self.secondary_base_path)]
@ -52,10 +53,6 @@ class MediaStorageTests(unittest.TestCase):
hs, self.primary_base_path, self.filepaths, storage_providers
)
def tearDown(self):
shutil.rmtree(self.test_dir)
@defer.inlineCallbacks
def test_ensure_media_is_in_local_cache(self):
media_id = "some_media_id"
test_body = "Test\n"
@ -73,7 +70,15 @@ class MediaStorageTests(unittest.TestCase):
# Now we run ensure_media_is_in_local_cache, which should copy the file
# to the local cache.
file_info = FileInfo(None, media_id)
local_path = yield self.media_storage.ensure_media_is_in_local_cache(file_info)
# This uses a real blocking threadpool so we have to wait for it to be
# actually done :/
x = self.media_storage.ensure_media_is_in_local_cache(file_info)
# Hotloop until the threadpool does its job...
self.wait_on_thread(x)
local_path = self.get_success(x)
self.assertTrue(os.path.exists(local_path))

40
tests/unittest.py
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@ -17,6 +17,7 @@ import gc
import hashlib
import hmac
import logging
import time
from mock import Mock
@ -24,7 +25,8 @@ from canonicaljson import json
import twisted
import twisted.logger
from twisted.internet.defer import Deferred
from twisted.internet.defer import Deferred, succeed
from twisted.python.threadpool import ThreadPool
from twisted.trial import unittest
from synapse.api.constants import EventTypes
@ -164,6 +166,7 @@ class HomeserverTestCase(TestCase):
servlets = []
hijack_auth = True
needs_threadpool = False
def setUp(self):
"""
@ -192,15 +195,19 @@ class HomeserverTestCase(TestCase):
if self.hijack_auth:
def get_user_by_access_token(token=None, allow_guest=False):
return {
"user": UserID.from_string(self.helper.auth_user_id),
"token_id": 1,
"is_guest": False,
}
return succeed(
{
"user": UserID.from_string(self.helper.auth_user_id),
"token_id": 1,
"is_guest": False,
}
)
def get_user_by_req(request, allow_guest=False, rights="access"):
return create_requester(
UserID.from_string(self.helper.auth_user_id), 1, False, None
return succeed(
create_requester(
UserID.from_string(self.helper.auth_user_id), 1, False, None
)
)
self.hs.get_auth().get_user_by_req = get_user_by_req
@ -209,9 +216,26 @@ class HomeserverTestCase(TestCase):
return_value="1234"
)
if self.needs_threadpool:
self.reactor.threadpool = ThreadPool()
self.addCleanup(self.reactor.threadpool.stop)
self.reactor.threadpool.start()
if hasattr(self, "prepare"):
self.prepare(self.reactor, self.clock, self.hs)
def wait_on_thread(self, deferred, timeout=10):
"""
Wait until a Deferred is done, where it's waiting on a real thread.
"""
start_time = time.time()
while not deferred.called:
if start_time + timeout < time.time():
raise ValueError("Timed out waiting for threadpool")
self.reactor.advance(0.01)
time.sleep(0.01)
def make_homeserver(self, reactor, clock):
"""
Make and return a homeserver.

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