app.py

#!/usr/bin/env python
# CirruxCache provides dynamic HTTP caching on AppEngine (CDN like)
# Copyright (C) 2009 Samuel Alba <sam.alba@gmail.com>
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
#

"""CirruxCache provides dynamic HTTP caching on AppEngine (CDN like)

http://cirrux.org/cache/
http://code.google.com/p/cirruxcache/
"""

__version__ = '0.3.1'
__author__ = [
    'Samuel Alba <sam.alba@gmail.com>'
]
__license__ = 'GNU Public License version 2'

import sys, os
root = os.path.dirname(os.environ['PATH_TRANSLATED'])
sys.path.append(os.path.join(root, 'lib'))
sys.path.append(os.path.join(root, 'contrib'))

import logging
import web

from services.cron import Cron
from services.admin import Admin
from services.store import Store
from services.debug import Debug
from lib import cache, redirect, forward


# URL mapping
urls = {}

urls['default'] = (
		'/(static[.]yterium[.]net/.*(?:js|css|png|gif|jpg|jpeg|swf))', 'yStaticAll',
		'/(static[.]yterium[.]net/.*)', 'yRedirectAll',
		'/(.*)', 'yRedirect'
		)

# POP definition
# You can define and configure your Point Of Presence

class yRedirectAll(redirect.Service):
	origin = 'http://'

class yStaticAll(cache.Service):
	origin = 'http://'
	allowFlushFrom = ['127.0.0.1']
	forceTTL = 2592000 # 1 hour
	ignoreQueryString = True

class yRedirect(redirect.Service):
	origin = 'http://www.yterium.net/'

class yStatic(cache.Service):
	origin = 'http://static.yterium.net/'
	allowFlushFrom = ['127.0.0.1']
	forceTTL = 2592000 # 1 hour
	ignoreQueryString = True



# !POP

# Dynamic configuration
# disabled for performance issue
#def initServices(urls):
#	cfg = config.Config()
#	for service, meta in cfg.all():
#		if service[0] != '_':
#			continue
#		globals()[service] = type(service, (Service,), meta)
#		urls = ('(%s/.*)' % meta['mount'], service) + urls
#	return urls

class Root(object):

	def GET(self, request):
		web.header('Content-Type', 'text/plain')
		content = 'CirruxCache (%s) / http://code.google.com/p/cirruxcache/\n' % __version__
		if request:
			raise web.HTTPError(status='404 Not Found', data=content)
		return content

class VhostMapper(object):

	def __iter__(self):
		url = ('/(.*)', 'Root')
		if 'HTTP_HOST' in web.ctx.environ:
			vhost = web.ctx.environ['HTTP_HOST']
			if vhost in urls:
				url = urls[vhost]
			elif 'default' in urls:
				url = urls['default']
		return iter(url)

if __name__ == '__main__':
#	urls = initServices(urls)
#	debug = ('SERVER_SOFTWARE' in os.environ and os.environ['SERVER_SOFTWARE'] == 'Development/1.0')
#	if debug:
#	from services.debug import Debug
#	urls = ('(/debug/.*)', 'Debug') + urls
#	logging.getLogger().setLevel(logging.DEBUG)
	app = web.application(VhostMapper(), globals())
	app.cgirun()