Python IOLoop.running方法代码示例

# 需要导入模块: from tornado.ioloop import IOLoop [as 别名]
# 或者: from tornado.ioloop.IOLoop import running [as 别名]
class SocketServerThreadStarter(Thread):
    '''
    Used to fire up the three services each in its own thread.
    '''
    
    def __init__(self, socketServerClassName, port):
        '''
        Create one thread for one of the services to run in.
        @param socketServerClassName: Name of top level server class to run.
        @type socketServerClassName: string
        @param port: port to listen on
        @type port: int
        '''
        super(SocketServerThreadStarter, self).__init__();
        self.socketServerClassName = socketServerClassName;
        self.port = port;
        self.ioLoop = None;

    def stop(self):
        self.ioLoop.stop();
       
    def run(self):
        '''
        Use the service name to instantiate the proper service, passing in the
        proper helper class.
        '''
        super(SocketServerThreadStarter, self).run();
        try:
            if  self.socketServerClassName == 'RootWordSubmissionService':
                EchoTreeService.log("Starting EchoTree new tree submissions server %d: accepts word trees submitted from connecting clients." % self.port);
                http_server = RootWordSubmissionService(RootWordSubmissionService.handle_request);
                http_server.listen(self.port);
                self.ioLoop = IOLoop();
                self.ioLoop.start();
                self.ioLoop.close(all_fds=True);
                return;
            elif self.socketServerClassName == 'EchoTreeScriptRequestHandler':
                EchoTreeService.log("Starting EchoTree script server %d: Returns one script that listens to the new-tree events in the browser." % self.port);
                http_server = EchoTreeScriptRequestHandler(EchoTreeScriptRequestHandler.handle_request);
                http_server.listen(self.port);
                self.ioLoop = IOLoop();
                self.ioLoop.start();
                self.ioLoop.close(all_fds=True);
                return;
            else:
                raise ValueError("Service class %s is unknown." % self.socketServerClassName);
        except Exception:
            # Typically an exception is caught here that complains about 'socket in use'
            # Should avoid that by sensing busy socket and timing out:
#            if e.errno == 98:
#                print "Exception: %s. You need to try starting this service again. Socket busy condition will time out within 30 secs or so." % `e`
#            else:
#                print `e`;
            #raise e;
            pass
        finally:
            if self.ioLoop is not None and self.ioLoop.running():
                self.ioLoop.stop();
                return;