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Viewing changes to start-loggerhead

  • Committer: Andrew Bennetts
  • Date: 2011-06-28 16:57:35 UTC
  • mfrom: (448.1.19 jsonify)
  • Revision ID: andrew.bennetts@canonical.com-20110628165735-qs6jebigf6wut152
Expose /+json URLs for getting machine readable content for various pages.

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start-loggerhead
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#!/usr/bin/env python
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import logging
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import logging.handlers
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from optparse import OptionParser
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import os
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import sys
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import urlparse
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from configobj import ConfigObj
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from paste import httpserver
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from paste.httpexceptions import make_middleware
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from paste.translogger import make_filter
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from loggerhead import daemon, release
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from loggerhead.apps.config import Root
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def make_handler(config, filename):
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    roll = config.get('log.roll', 'never')
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    if roll == 'daily':
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        h = logging.handlers.TimedRotatingFileHandler(filename, 'midnight', 0, 100)
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    elif roll == 'weekly':
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        h = logging.handlers.TimedRotatingFileHandler(filename, 'W0', 0, 100)
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    else:
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        h = logging.FileHandler(filename)
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    return h
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def setup_logging(home, config, foreground):
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    # i hate that stupid logging config format, so just set up logging here.
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    log_folder = os.path.join(home, 'logs')
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    if not os.path.exists(log_folder):
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        os.mkdir(log_folder)
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    f = logging.Formatter('%(levelname)-.3s [%(asctime)s.%(msecs)03d] %(name)s: %(message)s',
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                          '%Y%m%d-%H:%M:%S')
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    debug_log = make_handler(config, os.path.join(log_folder, 'debug.log'))
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    debug_log.setLevel(logging.DEBUG)
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    debug_log.setFormatter(f)
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    if foreground:
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        stdout_log = logging.StreamHandler(sys.stdout)
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        stdout_log.setLevel(logging.DEBUG)
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        stdout_log.setFormatter(f)
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    f = logging.Formatter('[%(asctime)s.%(msecs)03d] %(message)s',
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                          '%Y%m%d-%H:%M:%S')
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    access_log = make_handler(config, os.path.join(log_folder, 'access.log'))
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    access_log.setLevel(logging.INFO)
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    access_log.setFormatter(f)
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    logging.getLogger('').setLevel(logging.DEBUG)
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    logging.getLogger('').addHandler(debug_log)
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    logging.getLogger('wsgi').addHandler(access_log)
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    if foreground:
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        logging.getLogger('').addHandler(stdout_log)
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def main():
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    parser = OptionParser(usage='usage: %prog [options]', version='%prog ' + release.version)
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    parser.add_option('-f', '--foreground', action='store_true', dest='foreground', default=False,
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                      help="run in the foreground; don't daemonize")
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    parser.add_option('-C', '--check', action='store_true', dest='check', default=False,
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                      help="only start if not already running (useful for cron jobs)")
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    options, args = parser.parse_args()
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    if len(args) > 0:
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        parser.error('No filename arguments are used, only options.')
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    home = os.path.realpath(os.path.dirname(__file__))
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    pidfile = os.path.join(home, 'loggerhead.pid')
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    if options.check:
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        if daemon.is_running(pidfile):
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            sys.exit(0)
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        sys.stderr.write('Did not find loggerhead running in %r; restarting...\n' % (pidfile,))
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    # read loggerhead config
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    config = ConfigObj(os.path.join(home, 'loggerhead.conf'), encoding='utf-8')
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    extra_path = config.get('bzrpath', None)
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    if extra_path:
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        sys.path.insert(0, extra_path)
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    #turbogears.update_config(configfile="dev.cfg", modulename="loggerhead.config")
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    potential_overrides = [ ('server.socket_port', int),
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                            ('server.webpath', str),
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                            ('server.thread_pool', int),
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                            ('server.socket_host' ,str) ]
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    server_port = int(config.get('server.socket_port', 8080))
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    nworkers = int(config.get('server.thread_pool', 10))
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    server_host = config.get('server.socket_host', '0.0.0.0')
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    webpath = config.get('server.webpath', None)
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    for key, keytype in potential_overrides:
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        value = config.get(key, None)
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        if value is not None:
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            value = keytype(value)
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            #turbogears.config.update({ key: value })
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    if not options.foreground:
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        sys.stderr.write('\n')
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        sys.stderr.write('Launching loggerhead into the background.\n')
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        sys.stderr.write('PID file: %s\n' % (pidfile,))
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        sys.stderr.write('\n')
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        daemon.daemonize(pidfile, home)
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    setup_logging(home, config, foreground=options.foreground)
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    log = logging.getLogger('loggerhead')
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    log.info('Starting up...')
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    app = Root(config)
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    app = app
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    app = make_middleware(app)
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    app = make_filter(app, None)
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    if webpath:
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        scheme, netloc, path, blah, blah, blah = urlparse.urlparse(webpath)
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        def app(environ, start_response, orig=app):
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            environ['SCRIPT_NAME'] = path
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            environ['HTTP_HOST'] = netloc
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            return orig(environ, start_response)
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    try:
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        httpserver.serve(
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            app, host=server_host, port=server_port,
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            threadpool_workers=nworkers)
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    finally:
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        log.info('Shutdown.')
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        try:
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            os.remove(pidfile)
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        except OSError:
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            pass
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if __name__ == '__main__':
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    main()