Ignore changes in the amount of whitespace
Differences between version dated 2011-01-08 16:38:56 and 2011-01-10 09:58:13
(spanning 2 versions)
Deletions are marked like this.
Additions are marked like this.
#!python
"""Some sketches of implementing a WSGI 2 async API, in both sync and async servers"""
def example_app(environ):
yield '200 OK', [('Content-type','text/plain')], [b'hello world!']
def example_middleware(app):
def wrapped(environ):
# middleware can modify environ here
status, headers, body = yield app(environ)
# and modify or replace s, h, body here
body = process(body) # ...only if you need to alter it
yield status, headers, body
def process(body_iter):
# This function is only needed if the middleware wants to read
# or modify the body in some way...
while True:
chunk = yield body_iter # fetch the next chunk from the body
if chunk is None:
break
# process/modify chunk here, then yield it to the server
yield chunk
return wrapped
def WSGI2(app):
"""Decorator that synchronously emulates WSGI2 futures under WSGI 1"""
def wsgi1_app(environ, start_response):
return rv
# Coroutine is entirely finished when the stack is empty
if exc_info:
try:
raise exc_info[1]
finally:
exc_info = ()
return self.callback(value)
}}}
