I have a module that works fine when I push it to app engine. When it works it logs stuff nicely and the logs are accessible in the console logs viewer. But then after a while it just stops working and when I try to access any url give me 500 server errors with no info (it just says waiting 30 seconds might be a good idea). When this happens nothing gets logged for requests.
If I restart the module (by pushing my code to app engine) then it works for a little while again.
The module is running a Pyramid app and the configuration file looks a little something like:
application: my_app
module: my_module
version: dev
runtime: python27
api_version: 1
threadsafe: false
instance_class: B2
basic_scaling:
max_instances: 2
idle_timeout: 10m
handlers:
- url: /actions/.*
script: my_module.application
login: admin
- url: /.*
script: my_module.application
builtins:
- appstats: off
libraries:
- name: webob
version: latest
- name: setuptools
version: latest
includes:
- mapreduce/include.yaml
I think what is happening is that it's hitting the idle timeout and shutting down. I need requests to the module to turn it back on again. How do I do that?
Let me know if you need more info, I'm an app engine noob at this stage. Any help would be greatly appreciated.
When a module start, App Engine call the url /_ah/start. You mustn't handle this request. In you my_module.application you need to add in the handler who match this request :
def get(self):
# Let module start
if "X-Appengine-Cron" in self.request.headers or "X-AppEngine-TaskName" in self.request.headers or "X-Appengine-Failfast" in self.request.headers:
return