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from io import BytesIO
import attr
import json
from six import text_type
from twisted.python.failure import Failure
from twisted.internet.defer import Deferred
from twisted.test.proto_helpers import MemoryReactorClock
from synapse.http.site import SynapseRequest
from twisted.internet import threads
from tests.utils import setup_test_homeserver as _sth
@attr.s
class FakeChannel(object):
"""
A fake Twisted Web Channel (the part that interfaces with the
wire).
"""
result = attr.ib(factory=dict)
@property
def json_body(self):
if not self.result:
raise Exception("No result yet.")
return json.loads(self.result["body"])
def writeHeaders(self, version, code, reason, headers):
self.result["version"] = version
self.result["code"] = code
self.result["reason"] = reason
self.result["headers"] = headers
def write(self, content):
if "body" not in self.result:
self.result["body"] = b""
self.result["body"] += content
def requestDone(self, _self):
self.result["done"] = True
def getPeer(self):
return None
def getHost(self):
return None
@property
def transport(self):
return self
class FakeSite:
"""
A fake Twisted Web Site, with mocks of the extra things that
Synapse adds.
"""
server_version_string = b"1"
site_tag = "test"
@property
def access_logger(self):
class FakeLogger:
def info(self, *args, **kwargs):
pass
return FakeLogger()
def make_request(method, path, content=b""):
"""
Make a web request using the given method and path, feed it the
content, and return the Request and the Channel underneath.
"""
if isinstance(content, text_type):
content = content.encode('utf8')
site = FakeSite()
channel = FakeChannel()
req = SynapseRequest(site, channel)
req.process = lambda: b""
req.content = BytesIO(content)
req.requestReceived(method, path, b"1.1")
return req, channel
def wait_until_result(clock, channel, timeout=100):
"""
Wait until the channel has a result.
"""
clock.run()
x = 0
while not channel.result:
x += 1
if x > timeout:
raise Exception("Timed out waiting for request to finish.")
clock.advance(0.1)
class ThreadedMemoryReactorClock(MemoryReactorClock):
"""
A MemoryReactorClock that supports callFromThread.
"""
def callFromThread(self, callback, *args, **kwargs):
"""
Make the callback fire in the next reactor iteration.
"""
d = Deferred()
d.addCallback(lambda x: callback(*args, **kwargs))
self.callLater(0, d.callback, True)
return d
def setup_test_homeserver(*args, **kwargs):
"""
Set up a synchronous test server, driven by the reactor used by
the homeserver.
"""
d = _sth(*args, **kwargs).result
# Make the thread pool synchronous.
clock = d.get_clock()
pool = d.get_db_pool()
def runWithConnection(func, *args, **kwargs):
return threads.deferToThreadPool(
pool._reactor,
pool.threadpool,
pool._runWithConnection,
func,
*args,
**kwargs
)
def runInteraction(interaction, *args, **kwargs):
return threads.deferToThreadPool(
pool._reactor,
pool.threadpool,
pool._runInteraction,
interaction,
*args,
**kwargs
)
pool.runWithConnection = runWithConnection
pool.runInteraction = runInteraction
class ThreadPool:
"""
Threadless thread pool.
"""
def start(self):
pass
def callInThreadWithCallback(self, onResult, function, *args, **kwargs):
def _(res):
if isinstance(res, Failure):
onResult(False, res)
else:
onResult(True, res)
d = Deferred()
d.addCallback(lambda x: function(*args, **kwargs))
d.addBoth(_)
clock._reactor.callLater(0, d.callback, True)
return d
clock.threadpool = ThreadPool()
pool.threadpool = ThreadPool()
return d
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