460 lines
13 KiB
Python
460 lines
13 KiB
Python
import json
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import logging
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from io import BytesIO
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from six import text_type
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import attr
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from zope.interface import implementer
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from twisted.internet import address, threads, udp
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from twisted.internet._resolver import SimpleResolverComplexifier
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from twisted.internet.defer import Deferred, fail, succeed
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from twisted.internet.error import DNSLookupError
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from twisted.internet.interfaces import IReactorPluggableNameResolver, IResolverSimple
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from twisted.python.failure import Failure
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from twisted.test.proto_helpers import MemoryReactorClock
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from twisted.web.http import unquote
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from twisted.web.http_headers import Headers
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from synapse.http.site import SynapseRequest
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from synapse.util import Clock
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from tests.utils import setup_test_homeserver as _sth
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logger = logging.getLogger(__name__)
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class TimedOutException(Exception):
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"""
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A web query timed out.
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"""
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@attr.s
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class FakeChannel(object):
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"""
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A fake Twisted Web Channel (the part that interfaces with the
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wire).
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"""
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_reactor = attr.ib()
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result = attr.ib(default=attr.Factory(dict))
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_producer = None
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@property
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def json_body(self):
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if not self.result:
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raise Exception("No result yet.")
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return json.loads(self.result["body"].decode('utf8'))
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@property
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def code(self):
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if not self.result:
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raise Exception("No result yet.")
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return int(self.result["code"])
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@property
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def headers(self):
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if not self.result:
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raise Exception("No result yet.")
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h = Headers()
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for i in self.result["headers"]:
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h.addRawHeader(*i)
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return h
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def writeHeaders(self, version, code, reason, headers):
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self.result["version"] = version
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self.result["code"] = code
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self.result["reason"] = reason
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self.result["headers"] = headers
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def write(self, content):
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assert isinstance(content, bytes), "Should be bytes! " + repr(content)
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if "body" not in self.result:
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self.result["body"] = b""
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self.result["body"] += content
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def registerProducer(self, producer, streaming):
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self._producer = producer
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self.producerStreaming = streaming
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def _produce():
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if self._producer:
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self._producer.resumeProducing()
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self._reactor.callLater(0.1, _produce)
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if not streaming:
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self._reactor.callLater(0.0, _produce)
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def unregisterProducer(self):
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if self._producer is None:
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return
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self._producer = None
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def requestDone(self, _self):
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self.result["done"] = True
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def getPeer(self):
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# We give an address so that getClientIP returns a non null entry,
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# causing us to record the MAU
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return address.IPv4Address("TCP", "127.0.0.1", 3423)
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def getHost(self):
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return None
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@property
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def transport(self):
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return self
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class FakeSite:
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"""
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A fake Twisted Web Site, with mocks of the extra things that
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Synapse adds.
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"""
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server_version_string = b"1"
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site_tag = "test"
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access_logger = logging.getLogger("synapse.access.http.fake")
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def make_request(
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reactor,
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method,
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path,
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content=b"",
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access_token=None,
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request=SynapseRequest,
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shorthand=True,
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federation_auth_origin=None,
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):
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"""
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Make a web request using the given method and path, feed it the
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content, and return the Request and the Channel underneath.
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Args:
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method (bytes/unicode): The HTTP request method ("verb").
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path (bytes/unicode): The HTTP path, suitably URL encoded (e.g.
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escaped UTF-8 & spaces and such).
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content (bytes or dict): The body of the request. JSON-encoded, if
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a dict.
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shorthand: Whether to try and be helpful and prefix the given URL
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with the usual REST API path, if it doesn't contain it.
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federation_auth_origin (bytes|None): if set to not-None, we will add a fake
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Authorization header pretenting to be the given server name.
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Returns:
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Tuple[synapse.http.site.SynapseRequest, channel]
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"""
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if not isinstance(method, bytes):
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method = method.encode('ascii')
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if not isinstance(path, bytes):
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path = path.encode('ascii')
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# Decorate it to be the full path, if we're using shorthand
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if shorthand and not path.startswith(b"/_matrix"):
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path = b"/_matrix/client/r0/" + path
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path = path.replace(b"//", b"/")
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if not path.startswith(b"/"):
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path = b"/" + path
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if isinstance(content, text_type):
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content = content.encode('utf8')
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site = FakeSite()
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channel = FakeChannel(reactor)
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req = request(site, channel)
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req.process = lambda: b""
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req.content = BytesIO(content)
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req.postpath = list(map(unquote, path[1:].split(b'/')))
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if access_token:
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req.requestHeaders.addRawHeader(
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b"Authorization", b"Bearer " + access_token.encode('ascii')
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)
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if federation_auth_origin is not None:
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req.requestHeaders.addRawHeader(
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b"Authorization", b"X-Matrix origin=%s,key=,sig=" % (federation_auth_origin,)
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)
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if content:
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req.requestHeaders.addRawHeader(b"Content-Type", b"application/json")
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req.requestReceived(method, path, b"1.1")
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return req, channel
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def wait_until_result(clock, request, timeout=100):
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"""
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Wait until the request is finished.
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"""
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clock.run()
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x = 0
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while not request.finished:
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# If there's a producer, tell it to resume producing so we get content
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if request._channel._producer:
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request._channel._producer.resumeProducing()
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x += 1
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if x > timeout:
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raise TimedOutException("Timed out waiting for request to finish.")
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clock.advance(0.1)
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def render(request, resource, clock):
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request.render(resource)
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wait_until_result(clock, request)
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@implementer(IReactorPluggableNameResolver)
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class ThreadedMemoryReactorClock(MemoryReactorClock):
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"""
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A MemoryReactorClock that supports callFromThread.
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"""
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def __init__(self):
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self._udp = []
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lookups = self.lookups = {}
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@implementer(IResolverSimple)
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class FakeResolver(object):
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def getHostByName(self, name, timeout=None):
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if name not in lookups:
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return fail(DNSLookupError("OH NO: unknown %s" % (name, )))
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return succeed(lookups[name])
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self.nameResolver = SimpleResolverComplexifier(FakeResolver())
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super(ThreadedMemoryReactorClock, self).__init__()
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def listenUDP(self, port, protocol, interface='', maxPacketSize=8196):
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p = udp.Port(port, protocol, interface, maxPacketSize, self)
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p.startListening()
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self._udp.append(p)
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return p
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def callFromThread(self, callback, *args, **kwargs):
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"""
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Make the callback fire in the next reactor iteration.
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"""
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d = Deferred()
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d.addCallback(lambda x: callback(*args, **kwargs))
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self.callLater(0, d.callback, True)
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return d
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def setup_test_homeserver(cleanup_func, *args, **kwargs):
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"""
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Set up a synchronous test server, driven by the reactor used by
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the homeserver.
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"""
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d = _sth(cleanup_func, *args, **kwargs).result
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if isinstance(d, Failure):
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d.raiseException()
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# Make the thread pool synchronous.
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clock = d.get_clock()
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pool = d.get_db_pool()
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def runWithConnection(func, *args, **kwargs):
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return threads.deferToThreadPool(
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pool._reactor,
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pool.threadpool,
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pool._runWithConnection,
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func,
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*args,
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**kwargs
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)
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def runInteraction(interaction, *args, **kwargs):
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return threads.deferToThreadPool(
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pool._reactor,
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pool.threadpool,
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pool._runInteraction,
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interaction,
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*args,
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**kwargs
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)
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class ThreadPool:
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"""
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Threadless thread pool.
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"""
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def start(self):
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pass
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def stop(self):
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pass
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def callInThreadWithCallback(self, onResult, function, *args, **kwargs):
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def _(res):
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if isinstance(res, Failure):
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onResult(False, res)
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else:
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onResult(True, res)
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d = Deferred()
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d.addCallback(lambda x: function(*args, **kwargs))
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d.addBoth(_)
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clock._reactor.callLater(0, d.callback, True)
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return d
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clock.threadpool = ThreadPool()
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if pool:
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pool.runWithConnection = runWithConnection
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pool.runInteraction = runInteraction
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pool.threadpool = ThreadPool()
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pool.running = True
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return d
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def get_clock():
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clock = ThreadedMemoryReactorClock()
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hs_clock = Clock(clock)
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return (clock, hs_clock)
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@attr.s(cmp=False)
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class FakeTransport(object):
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"""
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A twisted.internet.interfaces.ITransport implementation which sends all its data
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straight into an IProtocol object: it exists to connect two IProtocols together.
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To use it, instantiate it with the receiving IProtocol, and then pass it to the
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sending IProtocol's makeConnection method:
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server = HTTPChannel()
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client.makeConnection(FakeTransport(server, self.reactor))
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If you want bidirectional communication, you'll need two instances.
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"""
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other = attr.ib()
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"""The Protocol object which will receive any data written to this transport.
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:type: twisted.internet.interfaces.IProtocol
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"""
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_reactor = attr.ib()
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"""Test reactor
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:type: twisted.internet.interfaces.IReactorTime
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"""
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_protocol = attr.ib(default=None)
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"""The Protocol which is producing data for this transport. Optional, but if set
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will get called back for connectionLost() notifications etc.
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"""
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disconnecting = False
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disconnected = False
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buffer = attr.ib(default=b'')
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producer = attr.ib(default=None)
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autoflush = attr.ib(default=True)
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def getPeer(self):
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return None
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def getHost(self):
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return None
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def loseConnection(self, reason=None):
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if not self.disconnecting:
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logger.info("FakeTransport: loseConnection(%s)", reason)
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self.disconnecting = True
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if self._protocol:
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self._protocol.connectionLost(reason)
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self.disconnected = True
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def abortConnection(self):
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logger.info("FakeTransport: abortConnection()")
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self.loseConnection()
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def pauseProducing(self):
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if not self.producer:
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return
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self.producer.pauseProducing()
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def resumeProducing(self):
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if not self.producer:
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return
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self.producer.resumeProducing()
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def unregisterProducer(self):
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if not self.producer:
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return
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self.producer = None
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def registerProducer(self, producer, streaming):
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self.producer = producer
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self.producerStreaming = streaming
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def _produce():
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d = self.producer.resumeProducing()
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d.addCallback(lambda x: self._reactor.callLater(0.1, _produce))
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if not streaming:
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self._reactor.callLater(0.0, _produce)
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def write(self, byt):
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self.buffer = self.buffer + byt
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# always actually do the write asynchronously. Some protocols (notably the
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# TLSMemoryBIOProtocol) get very confused if a read comes back while they are
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# still doing a write. Doing a callLater here breaks the cycle.
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if self.autoflush:
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self._reactor.callLater(0.0, self.flush)
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def writeSequence(self, seq):
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for x in seq:
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self.write(x)
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def flush(self, maxbytes=None):
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if not self.buffer:
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# nothing to do. Don't write empty buffers: it upsets the
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# TLSMemoryBIOProtocol
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return
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if self.disconnected:
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return
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if getattr(self.other, "transport") is None:
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# the other has no transport yet; reschedule
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if self.autoflush:
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self._reactor.callLater(0.0, self.flush)
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return
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if maxbytes is not None:
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to_write = self.buffer[:maxbytes]
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else:
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to_write = self.buffer
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logger.info("%s->%s: %s", self._protocol, self.other, to_write)
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try:
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self.other.dataReceived(to_write)
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except Exception as e:
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logger.warning("Exception writing to protocol: %s", e)
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return
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self.buffer = self.buffer[len(to_write):]
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if self.buffer and self.autoflush:
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self._reactor.callLater(0.0, self.flush)
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