google-app-engine - App Engine Python 模块和 channel 服务

Question

我在我的 python 项目中使用 App Engine 模块。 ( https://developers.google.com/appengine/docs/python/modules/#Python_Background_threads )

我也在 m 项目中使用 channel :https://developers.google.com/appengine/docs/python/channel/

我想将已连接/已断开连接的发布消息('/_ah/channel/connected/'、'/_ah/channel/disconnected/')定向到我的 api 模块。现在我无法让它们出现在任何模块中(默认或 api)

应用.yaml

    api_version: 1
    application: integrate
    version: 1-0-0
    runtime: python27
    threadsafe: true

    builtins:
      - deferred: on

    libraries:
      - name: pycrypto
      version: "2.6"

    handlers:
      - url: /favicon\.ico
      static_files: static/favicon.ico
      upload: static/favicon\.ico

      - url: /admin/.+
      script: src.default.main.app
      login: admin

      - url: /.*
      script: src.default.main.app

api.yaml

    api_version: 1
    application: integrate
    module: api
    version: 1-0-0
    runtime: python27
    threadsafe: true

    inbound_services:
      - channel_presence

    builtins:
      - deferred: on

    libraries:
      - name: pycrypto
      version: "2.6"

    handlers:
      - url: /admin/.+
      script: src.api.main.app
      login: admin

      - url: /.*
      script: src.api.main.app

调度.yaml

    application: integrate

    dispatch:
       - url: "*/_ah/channel/*"
       module: api

注意:需要说明的是，这一切都在本地开发模式下工作。

api.main.app

    app = webapp2.WSGIApplication(debug=True)
    _routes = [
        :
        ChannelDisconnectedHandler.mapping(),
        ChannelConnectHandler.mapping()
    ]

    for r in self._routes:
        app.router.add(r)

ChannelDisconnectHandler

    CHANNEL_DISCONNECTED_URL_PATTERN = '/_ah/channel/disconnected/'


    class ChannelDisconnectedHandler(RequestHandler):

        @classmethod
        def mapping(cls):
            return CHANNEL_DISCONNECTED_URL_PATTERN, cls

        def post(self):
            """
            Channel Presence handler. Will be called when a client disconnects.
            """
            channel_id = self.request.get('from')
            logging.info("Channel Disconnect. Id: %s" % channel_id)

channel 连接处理程序

    CHANNEL_CONNECT_URL_PATTERN = '/_ah/channel/connected/'

    class ChannelConnectHandler(RequestHandler):

        @classmethod
        def mapping(cls):
            return CHANNEL_CONNECT_URL_PATTERN, cls

        def post(self):
            """
            Channel Presence handler. Will be called when a client connects.
            """
            channel_id = self.request.get('from')
            logging.info("Channel Connect. Id: %s" % channel_id)

所以我的客户端(用 javascript 编写)发布到我的 api 模块并打开一个 channel 。

    var open_channel = function(tokenResponse) {
        console.log("Open Channel. token Response: " + tokenResponse)
        token = tokenResponse.token;
        var channel = new goog.appengine.Channel(token);
        if (socket != null) {
            socket.close();
        }
        socket = channel.open();
        socket.onopen = onOpened;
        socket.onmessage = onMessage;
        socket.onerror = onError;
        socket.onclose = onClose;
    };

    onOpened = function() {
        console.info("Channel API Connection is open.");
    };

    onError = function(e) {
        console.info("CHANNEL Error. Code: " + e.code + ", Description: " + e.description);
    };

    onClose = function() {
        console.info("Close Channel");
    };

    onMessage = function(msg) {
       console.info("Message Received: " + msg + ", Data: " + msg.data);
    };

此回调函数是通过有效 token 到达的。我成功创建了套接字并按预期完成了此功能。然后在我的本地系统上调用 onOpened 函数，我从服务器接收消息。在生产中，永远不会调用 onOpened，我也从未收到任何消息。/_ah/channel/connected/也从未被调用。

模块不支持 channel 服务吗？关于我缺少的东西有什么想法吗？

Answer 1

根据 Google Enterprise 支持(从他们的原始回答中略微修改):

1. channel_presence 必须在 app.yaml 中启用入站服务。

   inbound_services:
   - channel_presence
   

   在模块的 yaml 文件中启用此入站服务(例如，此问题中的 api.yaml)不会启用此服务。

2. 以 */_ah 开头的 URL 路径不是可调度路径，不能通过 dispatch.yaml 进行路由。因此，必须在 app.yaml 中描述 channel_presence URL 路径处理程序。

   handlers:
   - url: /_ah/channel/connected/
     script: mymodule.application