python – 测试扭曲的应用程序 – 加载客户端

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我写过一个基于Twisted的服务器,我也想用扭曲测试它.

但我想写一个负载测试,同时启动一堆请求.

但我相信我没有得到Twisted的概念,主要是客户端,因为我遇到了这个问题：

    from twisted.internet import reactor, protocol
from threading import Thread
from twisted.protocols.basic import LineReceiver

__author__="smota"
__date__ ="$30/10/2009 17:17:50$"

class SquitterClient(LineReceiver):

    def connectionMade(self):
        self.sendLine("message from " % threading.current_thread().name);
        pass

    def connectionLost(self, reason):
        print "connection lost"

    def sendMessage(self, msg):
        for m in [ "a", "b", "c", "d", "e"]:
            self.sendLine(msg % " - " % m);

class SquitterClientFactory(protocol.ClientFactory):
    protocol = SquitterClient

    def clientConnectionFailed(self, connector, reason):
        print "Connection failed - goodbye!"
        reactor.stop()

    def clientConnectionLost(self, connector, reason):
        print "Connection lost - goodbye!"
        reactor.stop()

def createAndRun():
    f = SquitterClientFactory()
    reactor.connectTCP("localhost", 4010, f)
    reactor.run(installSignalHandlers=0)

# this connects the protocol to a server runing on port 8000
def main():
    for n in range(0,10):
        th=Thread(target=createAndRun)
        th.start()

# this only runs if the module was *not* imported
if __name__ == '__main__':
    main()

socket_client.py:35:
DeprecationWarning: Reactor already
running! This behavior is deprecated
since Twisted 8.0
reactor.run(installSignalHandlers=0)

我错过了什么？

怎么测试呢？

谢谢,

塞缪尔

解决方法:

失败的直接原因是您尝试多次调用reactor上的run().你应该只调用一次run().我想你期望有多个反应堆,每个都在自己的线程中,但实际上你只有一个.不好的是,拥有多个反应堆是困难的或不可能的 – 好处是它也是不必要的.实际上你甚至不需要多个线程.您可以在一个反应??器中多路复用多个客户端连接,就像监听多个连接一样容易.

修改示例代码,类似以下内容应该有效.关键的想法是你不需要多个反应堆来同时做事.唯一可以与常规Python实现并发的是I / O.

from twisted.internet import reactor, protocol
from twisted.protocols.basic import LineReceiver

__author__="smota"
__date__ ="$30/10/2009 17:17:50$"

class SquitterClient(LineReceiver):
    def connectionMade(self):
        self.messageCount = 0
        # The factory provides a reference to itself, we'll use it to enumerate the clients
        self.factory.n += 1
        self.name = "Client %d" %self.factory.n

        # Send initial message, and more messages a bit later
        self.sendLine("Client %s starting!" % self.name);
        reactor.callLater(0.5, self.sendMessage, "Message %d" %self.messageCount)

    def connectionLost(self, reason):
        print "connection lost"

    def sendMessage(self, msg):
        for m in [ "a", "b", "c", "d", "e"]:
            self.sendLine("Copy %s of message %s from client %s!" % (m, msg, self.name))
        if self.factory.stop:
            self.sendLine("Client %s disconnecting!" % self.name)
            self.transport.loseConnection()
        else:
            self.messageCount += 1
            reactor.callLater(0.5, self.sendMessage, "Message %d" %self.messageCount)

class SquitterClientFactory(protocol.ClientFactory):
    protocol = SquitterClient

    def __init__(self):
        self.n = 0
        self.stop = False

    def stopTest():
        self.stop = True

    def clientConnectionFailed(self, connector, reason):
        print "Connection failed - goodbye!"

    def clientConnectionLost(self, connector, reason):
        print "Connection lost - goodbye!"

# this connects the protocol to a server running on port 8000
def main():
    # Create 10 clients

    f = SquitterClientFactory()
    for i in range(10):
        reactor.connectTCP("localhost", 8000, f)

    # Schedule end of test in 10 seconds
    reactor.callLater(10, f.stopTest)

    # And let loose the dogs of war
    reactor.run()

# this only runs if the module was *not* imported
if __name__ == '__main__':
    main()

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