#!/usr/bin/python
import cherrypy
from flup.server.fcgi import WSGIServer
import logging
import json
import os
import subprocess
import sys
import traceback
HERE = os.path.abspath(os.path.dirname(__file__))
ZWRITE = os.path.join(HERE, 'bin', 'zsend')
LOG_FILENAME = 'logs/zcommit.log'
# Set up a specific logger with our desired output level
logger = logging.getLogger(__name__)
logger.setLevel(logging.DEBUG)
# Add the log message handler to the logger
handler = logging.FileHandler(LOG_FILENAME)
logger.addHandler(handler)
def zephyr(sender, klass, instance, zsig, msg):
# TODO: spoof the sender
logger.info("""About to send zephyr:
sender: %(sender)s
class: %(klass)s
instance: %(instance)s
zsig: %(zsig)s
msg: %(msg)s""" % {'sender' : sender,
'klass' : klass,
'instance' : instance,
'zsig' : zsig,
'msg' : msg})
cmd = [ZWRITE, '-S', sender, '-c', klass, '-i', instance,
'-s', zsig, '-d', '-m', msg]
subprocess.check_call(cmd)
class Application(object):
@cherrypy.expose
def index(self):
logger.debug('Hello world app reached')
return """
Welcome to zcommit.
zcommit allows you to send zephyr notifications by sending an HTTP
POST request to a URL. Currently zcommit supports POST-backs from
github. If you would like it to support another form of POST-back,
please let us know (zcommit@mit.edu).
URL structure
The URL you post to is structured as follows:
http://zcommit.mit.edu/$type/$key1/$value1/$key2/$value2/....
So for example, the URL
http://zcommit.mit.edu/github/class/zcommit/instance/commit
is parsed as having type github, class zcommit, and
instance commit. Using this information, zcommit figures out
how to form a useful message which is then sends as a zephyr.
Github
Set your POST-back URL to
http://zcommit.mit.edu/github/class/$classname, followed by
any of the following optional key/value parameters:
- /instance/$instance
- /zsig/$zsig
- /sender/$sender
"""
class Github(object):
@cherrypy.expose
def default(self, *args, **query):
try:
return self._default(*args, **query)
except Exception, e:
logger.error('Caught exception %s:\n%s' % (e, traceback.format_exc()))
raise
def _default(self, *args, **query):
logger.info('A %s request with args: %r and query: %r' %
(cherrypy.request.method, args, query))
opts = {}
if len(args) % 2:
raise cherrypy.HTTPError(400, 'Invalid submission URL')
logger.debug('Passed validation')
for i in xrange(0, len(args), 2):
opts[args[i]] = args[i + 1]
logger.debug('Set opts')
if 'class' not in opts:
raise cherrypy.HTTPError(400, 'Must specify a zephyr class name')
logger.debug('Specified a class')
if cherrypy.request.method == 'POST':
logger.debug('About to load data')
payload = json.loads(query['payload'])
logger.debug('Loaded payload data')
zsig = payload['ref']
if 'zsig' in opts:
zsig = '%s: %s' % (opts['zsig'], zsig)
sender = opts.get('sender', 'daemon.zcommit')
logger.debug('Set zsig')
for c in reversed(payload['commits']):
inst = opts.get('instance', c['id'][:8])
actions = []
if c.get('added'):
actions.append('Added: %s\n' % '\n '.join(c['added']))
if c.get('removed'):
actions.append('Removed: %s\n' % '\n '.join(c['removed']))
if c.get('modified'):
actions.append('Modified: %s\n' % '\n '.join(c['modified']))
if not actions:
actions.append('Something weird happened... could not figure out what action to take')
info = {'name' : c['author']['name'],
'email' : c['author']['email'],
'message' : c['message'],
'timestamp' : c['timestamp'],
'actions' : '--\n'.join(actions)}
msg = """%(name)s <%(email)s> (%(timestamp)s)
> %(message)s
--
%(actions)s""" % info
zephyr(sender, opts['class'], inst, zsig, msg)
msg = 'Thanks for posting!'
else:
msg = ('If you had sent a POST request to this URL, would have sent'
' a zepyhr to -c %s' % opts['class'])
return msg
github = Github()
def main():
app = cherrypy.tree.mount(Application(), '/zcommit')
cherrypy.server.unsubscribe()
cherrypy.engine.start()
try:
WSGIServer(app, environ={'SCRIPT_NAME' : '/zcommit'}).run()
finally:
cherrypy.engine.stop()
if __name__ == '__main__':
sys.exit(main())