Is there any way to debug the code in service writing with ProtoRPC?(SDK 1.7.6)

[刘鹏]

Hi,There.

    I use ProtoRPC since the Google App Engine SDK 1.7.3.

    I update the Google App Engine SDK from 1.7.5 to 1.7.6. And then I found the register service code have changed, so I follow your up to date code in the ProtoRPC Overview. And then I can use the ProtoRPC successfully. But I found a very annoy problem is that I can't let step into the break point I used to do.

   I noticed that the code changed and leads out there is no place to set debug=True.

   The old code is like this:

              from google.appengine.ext import webapp

              application = webapp.WSGIApplication( service_handlers.service_mapping(     [('/postservice', postservice.PostService)]), debug=True)

  And the new code is like this:

              from protorpc.wsgi import service

              app = service.service_mappings([('/postservice', postservice.PostService)])

  I have roughly go through the source code of protorpc.wsgi.service class, and find no key word "debug".

  So I couldn't find out how to enable the debug in ProtoRPC with the GAE SDK 1.7.6.

  Can anyone supply some solutions?

[Danny Hermes]

What's wrong with how you were doing it before?

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[刘鹏]

    I operate as usual as the normal operation before. I use Eclipse+Pydev. And before I upgrade the SDK from 1.7.5 to 1.7.6 I set some break in the service method just like this

class PostService(remote.Service):
     @remote.method(FPMessage, message_types.VoidMessage)

    def post_fpmessage(self, request):

        # extract and decode source info

        startTime = datetime.strptime(request.startTime, "%Y-%m-%d  %H:%M:%S")

        .......

    I set the break point on the green line. And when I use client code to call the http://localhost:8080/postservice.post_fpmessage to send some JSON data. It should have to get the code running stop at the green line and then I can use step over , step into or something while the SDK is 1.7.5 and I haven't change the web service register code.

   But today, after I fixed the web service register code. And then I can't step into the break point.

   I was wondering this is the problem with my configuration or the current code state just can't use debug mode.

在 2013年3月26日星期二UTC+8下午11时46分43秒，刘鹏写道：

[Danny Hermes]

This is a problem with dev_appserver2, not with protorpc.

See

https://code.google.com/p/appengine-devappserver2-experiment/issues/detail?id=28

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[刘鹏]

Thank you for your reply. It's late here now. I'm so sleepy. Hope I can solve this problem soon.

Thank you again. I really appreciate it. The info with ProtoRPC is so hard to find except here.

在 2013年3月27日星期三UTC+8上午12时12分21秒，Danny Hermes写道：

[Danny Hermes]

If it wasn't clear before, your issue was not specific to ProtoRPC, but instead to App Engine as a whole.

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[Rafe Kaplan]

  It looks like you are migrating from using the webapp (deprecated) ProtoRPC request handler to the WSGI request handler.  If that's the case, then no, there is not a debug flag in the API.  However, that should not prevent you from setting breakpoints from within your debugger.

  When you make requests to your dev-appserver are you receiving any kind of error response?  Also errors should automatically appear in your log.  Are you able to see those?

On Tue, Mar 26, 2013 at 9:10 AM, 刘鹏 <myme5...@gmail.com> wrote:

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 - Rafe Kaplan

[刘鹏]

    Hi There,

        I found it has nothing to do with the debug flag.

An optional debug=True argument puts the application in debugging mode, which tells webapp to display a stack trace in the browser when a handler raises an exception. By default, webapp just returns an HTTP 500 error when an error occurs.

        see https://developers.google.com/appengine/docs/python/tools/webapp/running

       And I found it as a problem with the dev_appserver.py in version GAE SDK 1.7.6

       this is the issue https://code.google.com/p/googleappengine/issues/detail?id=9012&q=breakpoint&colspec=ID%20Type%20Component%20Status%20Stars%20Summary%20Language%20Priority%20Owner%20Log

       It's the same with my issue. So I think it's the problem with dev-appserver.py but I still can't find out a solution to enable the breakpoint triggered again.

在 2013年3月27日星期三UTC+8上午3时30分39秒，Rafe Kaplan写道：

 - Rafe Kaplan