Python interfaces.IPushProducer方法代码示例

# 需要导入模块: from twisted.internet import interfaces [as 别名]
# 或者: from twisted.internet.interfaces import IPushProducer [as 别名]
def deliverBody(protocol):
        """
        Register an L{IProtocol<twisted.internet.interfaces.IProtocol>} provider
        to receive the response body.

        The protocol will be connected to a transport which provides
        L{IPushProducer}.  The protocol's C{connectionLost} method will be
        called with:

            - ResponseDone, which indicates that all bytes from the response
              have been successfully delivered.

            - PotentialDataLoss, which indicates that it cannot be determined
              if the entire response body has been delivered.  This only occurs
              when making requests to HTTP servers which do not set
              I{Content-Length} or a I{Transfer-Encoding} in the response.

            - ResponseFailed, which indicates that some bytes from the response
              were lost.  The C{reasons} attribute of the exception may provide
              more specific indications as to why.
        """ 

# 需要导入模块: from twisted.internet import interfaces [as 别名]
# 或者: from twisted.internet.interfaces import IPushProducer [as 别名]
def test_makeConnection(self):
        """
        The L{IProtocol} provider passed to L{Response.deliverBody} has its
        C{makeConnection} method called with an L{IPushProducer} provider
        hooked up to the response as an argument.
        """
        producers = []
        transport = StringTransport()
        class SomeProtocol(Protocol):
            def makeConnection(self, producer):
                producers.append(producer)

        consumer = SomeProtocol()
        response = justTransportResponse(transport)
        response.deliverBody(consumer)
        [theProducer] = producers
        theProducer.pauseProducing()
        self.assertEqual(transport.producerState, u'paused')
        theProducer.resumeProducing()
        self.assertEqual(transport.producerState, u'producing') 

# 需要导入模块: from twisted.internet import interfaces [as 别名]
# 或者: from twisted.internet.interfaces import IPushProducer [as 别名]
def deliverBody(self, protocol):
        """
        Register an L{IProtocol} provider to receive the response body.

        The protocol will be connected to a transport which provides
        L{IPushProducer}.  The protocol's C{connectionLost} method will be
        called with:

            - ResponseDone, which indicates that all bytes from the response
              have been successfully delivered.

            - PotentialDataLoss, which indicates that it cannot be determined
              if the entire response body has been delivered.  This only occurs
              when making requests to HTTP servers which do not set
              I{Content-Length} or a I{Transfer-Encoding} in the response.

            - ResponseFailed, which indicates that some bytes from the response
              were lost.  The C{reasons} attribute of the exception may provide
              more specific indications as to why.
        """ 

# 需要导入模块: from twisted.internet import interfaces [as 别名]
# 或者: from twisted.internet.interfaces import IPushProducer [as 别名]
def test_makeConnection(self):
        """
        The L{IProtocol} provider passed to L{Response.deliverBody} has its
        C{makeConnection} method called with an L{IPushProducer} provider
        hooked up to the response as an argument.
        """
        producers = []
        transport = StringTransport()
        class SomeProtocol(Protocol):
            def makeConnection(self, producer):
                producers.append(producer)

        consumer = SomeProtocol()
        response = justTransportResponse(transport)
        response.deliverBody(consumer)
        [theProducer] = producers
        theProducer.pauseProducing()
        self.assertEqual(transport.producerState, 'paused')
        theProducer.resumeProducing()
        self.assertEqual(transport.producerState, 'producing') 

# 需要导入模块: from twisted.internet import interfaces [as 别名]
# 或者: from twisted.internet.interfaces import IPushProducer [as 别名]
def write(self, data):
        self.transport.write(data)
        if not self.streaming:
            self.producer.resumeProducing()

    #
    # IPushProducer interface
    # 

# 需要导入模块: from twisted.internet import interfaces [as 别名]
# 或者: from twisted.internet.interfaces import IPushProducer [as 别名]
def write(self, data):
        self.sendMessage(data)
        if not self.streaming:
            self.producer.resumeProducing()

    #
    # IPushProducer interface
    # 

# 需要导入模块: from twisted.internet import interfaces [as 别名]
# 或者: from twisted.internet.interfaces import IPushProducer [as 别名]
def _stopProxying(self):
        """
        Stop forwarding calls of L{twisted.internet.interfaces.IPushProducer}
        methods to the underlying L{twisted.internet.interfaces.IPushProducer}
        provider.
        """
        self._producer = None 

# 需要导入模块: from twisted.internet import interfaces [as 别名]
# 或者: from twisted.internet.interfaces import IPushProducer [as 别名]
def connectionMade(self):
        self.setTimeout(self.timeOut)
        self._networkProducer = interfaces.IPushProducer(
            self.transport, _NoPushProducer()
        )
        self._networkProducer.registerProducer(self, True) 

# 需要导入模块: from twisted.internet import interfaces [as 别名]
# 或者: from twisted.internet.interfaces import IPushProducer [as 别名]
def registerProducer(self, producer, streaming):
        """
        Register to receive data from a producer.

        This sets self to be a consumer for a producer.  When this object runs
        out of data (as when a send(2) call on a socket succeeds in moving the
        last data from a userspace buffer into a kernelspace buffer), it will
        ask the producer to resumeProducing().

        For L{IPullProducer} providers, C{resumeProducing} will be called once
        each time data is required.

        For L{IPushProducer} providers, C{pauseProducing} will be called
        whenever the write buffer fills up and C{resumeProducing} will only be
        called when it empties.

        @type producer: L{IProducer} provider
        @param producer: The L{IProducer} that will be producing data.

        @type streaming: L{bool}
        @param streaming: C{True} if C{producer} provides L{IPushProducer},
        C{False} if C{producer} provides L{IPullProducer}.

        @raise RuntimeError: If a producer is already registered.

        @return: L{None}
        """
        if self._requestProducer is not None:
            raise RuntimeError(
                "Cannot register producer %s, because producer %s was never "
                "unregistered." % (producer, self._requestProducer))

        if not streaming:
            producer = _PullToPush(producer, self)

        self._requestProducer = producer
        self._requestProducerStreaming = streaming

        if not streaming:
            producer.startStreaming() 

# 需要导入模块: from twisted.internet import interfaces [as 别名]
# 或者: from twisted.internet.interfaces import IPushProducer [as 别名]
def test_interface(self):
        """
        L{TransportProxyProducer} instances provide L{IPushProducer}.
        """
        self.assertTrue(
            verifyObject(IPushProducer, TransportProxyProducer(None))) 

# 需要导入模块: from twisted.internet import interfaces [as 别名]
# 或者: from twisted.internet.interfaces import IPushProducer [as 别名]
def registerProducer(self, producer, streaming):
        """
        Register to receive data from a producer.

        This sets this selectable to be a consumer for a producer.  When this
        selectable runs out of data on a write() call, it will ask the producer
        to resumeProducing(). When the FileDescriptor's internal data buffer is
        filled, it will ask the producer to pauseProducing(). If the connection
        is lost, FileDescriptor calls producer's stopProducing() method.

        If streaming is true, the producer should provide the IPushProducer
        interface. Otherwise, it is assumed that producer provides the
        IPullProducer interface. In this case, the producer won't be asked to
        pauseProducing(), but it has to be careful to write() data only when its
        resumeProducing() method is called.
        """
        if self.producer is not None:
            raise RuntimeError(
                "Cannot register producer %s, because producer %s was never "
                "unregistered." % (producer, self.producer))
        if self.disconnected:
            producer.stopProducing()
        else:
            self.producer = producer
            self.streamingProducer = streaming
            if not streaming:
                producer.resumeProducing() 

# 需要导入模块: from twisted.internet import interfaces [as 别名]
# 或者: from twisted.internet.interfaces import IPushProducer [as 别名]
def test_verifyProducer(self):
        """
        L{_ProcessEndpointTransport}s provide L{IPushProducer}.
        """
        verifyObject(IPushProducer, self.endpointTransport) 

# 需要导入模块: from twisted.internet import interfaces [as 别名]
# 或者: from twisted.internet.interfaces import IPushProducer [as 别名]
def test_registerProducer(self):
        """
        Registering a producer with the endpoint transport registers it with
        the underlying process transport.
        """
        @implementer(IPushProducer)
        class AProducer(object):
            pass
        aProducer = AProducer()
        self.endpointTransport.registerProducer(aProducer, False)
        self.assertIs(self.process.producer, aProducer) 

# 需要导入模块: from twisted.internet import interfaces [as 别名]
# 或者: from twisted.internet.interfaces import IPushProducer [as 别名]
def test_implementInterfaceIPushProducer(self):
        """
        L{FileDescriptor} should implement L{IPushProducer}.
        """
        self.assertTrue(verifyClass(IPushProducer, FileDescriptor)) 

# 需要导入模块: from twisted.internet import interfaces [as 别名]
# 或者: from twisted.internet.interfaces import IPushProducer [as 别名]
def test_pushProducer(self):
        """
        Test a push producer registered against a loopback transport.
        """
        @implementer(IPushProducer)
        class PushProducer(object):
            resumed = False

            def __init__(self, toProduce):
                self.toProduce = toProduce

            def resumeProducing(self):
                self.resumed = True

            def start(self, consumer):
                self.consumer = consumer
                consumer.registerProducer(self, True)
                self._produceAndSchedule()

            def _produceAndSchedule(self):
                if self.toProduce:
                    self.consumer.write(self.toProduce.pop(0))
                    reactor.callLater(0, self._produceAndSchedule)
                else:
                    self.consumer.unregisterProducer()
        d = self._producertest(PushProducer)

        def finished(results):
            (client, server) = results
            self.assertFalse(
                server.producer.resumed,
                "Streaming producer should not have been resumed.")
        d.addCallback(finished)
        return d