Question

The following code generates a CGI method instead of WSGI as indicated in the log below. Is this the normal execution for a WSGI app on the dev server? If not what needs to change to get the application to execute as WSGI?

main.py

import webapp2
import wsgiref.handlers
import logging
from google.appengine.api import users


class HomeHandler(webapp2.RequestHandler):
    def get(self):
        self.response.out.write("Hi World")

app = webapp2.WSGIApplication([
    (r'/', HomeHandler),
], debug=True)

app.run()

app.yaml

application: WSGITEST
version: 1
runtime: python27
api_version: 1
threadsafe: yes

libraries:
- name: webapp2
  version: latest

handlers:
- url: /.*
  script: main.app

Log

DEBUG    2012-05-09 21:31:14,921 dev_appserver.py:656] Matched "/" to CGI dispatcher with path main.app
DEBUG    2012-05-09 21:31:14,926 dev_appserver_import_hook.py:1246] Enabling webapp2: None
DEBUG    2012-05-09 21:31:14,928 dev_appserver.py:1624] Executing CGI with env:
{'REQUEST_ID_HASH': '77DE68DA', 'SERVER_SOFTWARE': 'Development/1.0', 'SCRIPT_NAME': '', 'REQUEST_METHOD': 'GET', 'PATH_INFO': '/', 'SERVER_PROTOCOL': 'HTTP/1.0', 'QUERY_STRING': '', 'CONTENT_LENGTH': '', 'USER_ID': '', 'APPENGINE_RUNTIME': 'python27', 'TZ': 'UTC', 'SERVER_NAME': 'localhost', 'REMOTE_ADDR': '127.0.0.1', 'SDK_VERSION': '1.6.5', 'PATH_TRANSLATED': '/home/bear/dev/appengine/code/ae-baseapp/401/main3.app', 'SERVER_PORT': '8080', '_AH_THREADSAFE': '1', 'CURRENT_VERSION_ID': '1.1', 'USER_ORGANIZATION': '', 'HTTP_USER_AGENT': 'Mozilla/5.0 (X11; Ubuntu; Linux i686; rv:12.0) Gecko/20100101 Firefox/12.0', 'HTTP_HOST': 'localhost:8080', 'HTTP_CONNECTION': 'keep-alive', 'USER_EMAIL': '', 'HTTP_ACCEPT': 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8', 'APPLICATION_ID': 'dev~WSGITEST', 'GATEWAY_INTERFACE': 'CGI/1.1', 'HTTP_ACCEPT_LANGUAGE': 'en-us,en;q=0.5', 'HTTP_DNT': '1', 'CONTENT_TYPE': 'application/x-www-form-urlencoded', '_AH_ENCODED_SCRIPT_NAME': '/', 'AUTH_DOMAIN': 'gmail.com'}
INFO     2012-05-09 21:31:14,933 dev_appserver.py:2891] "GET / HTTP/1.1" 200 -

Answer 1

this log is a hardcoded string:

/usr/local/google_appengine/google/appengine/tools/dev_appserver.py:
 1622      sys.modules['__builtin__'] = __builtin__
 1623  
 1624:     logging.debug('Executing CGI with env:\n%s', repr(env))