loading before all modules and defer to middleware

[Guillermo Cruz]

Hi,

 I'm trying to configure an app monitoring agent on a Pylons app, so the recommended setup is to initialize the agent before all modules import, and also  create a middleware class to collect stats on each request. I have the following setup working but there's the potential risk for the monitoring agent being initialized twice and the agent not working as intended. Any pointers on how to take a better approach?.

import newrelic.agent

#class in config/middleware.py

class NewRelicAgent(object):

    def __init__(self, app):

        self.app = app

        newrelic.agent.initialize('/path/to/file/newrelic.ini')

    @newrelic.agent.wsgi_application()

    def __call__(self, environ, start_response):

        return self.app(environ, start_response)

#config/middleware.py make_app def 

app = NewRelicAgent(app)

[cd34]

Matthew Housden documented this on his blog:

http://matthewhousden.com/python/new-relic-and-pyramid/

basically:

import newrelic.agent
newrelic.agent.initialize('path/to/newrelic.ini', 'development')

application = config.make_wsgi_app()
return newrelic.agent.wsgi_application()(application)