~loggerhead-team/loggerhead/trunk-rich

#!/usr/bin/env python

# 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

"""A script for starting the loggerhead process."""

import logging

import logging.handlers

from optparse import OptionParser

import os

import sys

import urlparse

from configobj import ConfigObj

from paste import httpserver

from paste.httpexceptions import make_middleware

from paste.translogger import make_filter

from loggerhead import daemon

from loggerhead.apps.config import Root

from loggerhead.trace import make_handler, setup_logging

from loggerhead.apps.error import ErrorHandlerApp

def main():

    home = os.path.realpath(os.path.dirname(__file__))

    default_pidfile = os.path.join(home, 'loggerhead.pid')

    default_configfile = os.path.join(home, 'loggerhead.conf')

    default_log_folder = os.path.join(home, 'logs')

    parser = OptionParser(usage='usage: %prog [options]', version='%prog')

    parser.add_option('-f', '--foreground',

                      action='store_true', dest='foreground', default=False,

                      help="run in the foreground; don't daemonize")

    parser.add_option('-C', '--check', action='store_true',

                      dest='check', default=False,

                      help=("only start if not already running (useful for "

                            "cron jobs)"))

    parser.add_option('-p', '--pidfile', dest="pidfile",

                      default=default_pidfile,

                      type=str, help="override pidfile location")

    parser.add_option('-c', '--config-file', dest="configfile",

                      default=default_configfile,

                      type=str, help="override configuration file location")

    parser.add_option('-L', '--log-folder', dest="log_folder",

                      default=default_log_folder,

                      type=str, help="override log file directory")

    options, args = parser.parse_args()

    if len(args) > 0:

        parser.error('No filename arguments are used, only options.')

    if options.check:

        if daemon.is_running(options.pidfile):

            sys.exit(0)

        sys.stderr.write('Did not find loggerhead running in %r;' % (

                         options.pidfile))

        sys.stderr.write(' restarting...\n')

    # read loggerhead config

    config = ConfigObj(options.configfile, encoding='utf-8')

    extra_path = config.get('bzrpath', None)

    if extra_path:

        sys.path.insert(0, extra_path)

    potential_overrides = [('server.socket_port', int),

                           ('server.webpath', str),

                           ('server.thread_pool', int),

                           ('server.socket_host', str)]

    server_port = int(config.get('server.socket_port', 8080))

    nworkers = int(config.get('server.thread_pool', 10))

    server_host = config.get('server.socket_host', '0.0.0.0')

    webpath = config.get('server.webpath', None)

    for key, keytype in potential_overrides:

        value = config.get(key, None)

        if value is not None:

            value = keytype(value)

    if not options.foreground:

        sys.stderr.write('\n')

        sys.stderr.write('Launching loggerhead into the background.\n')

        sys.stderr.write('PID file: %s\n' % options.pidfile)

        sys.stderr.write('\n')

        daemon.daemonize(options.pidfile, home)

    setup_logging(options.log_folder, config, foreground=options.foreground)

    log = logging.getLogger('loggerhead')

    log.info('Starting up...')

    app = Root(config)

    app = app

    app = make_middleware(app)

    app = make_filter(app, None, logger_name=log.name+'.access')

    app = ErrorHandlerApp(app)

    if webpath:

        scheme, netloc, path, blah, blah, blah = urlparse.urlparse(webpath)

        def app(environ, start_response, orig=app):

            environ['SCRIPT_NAME'] = path

            environ['HTTP_HOST'] = netloc

            return orig(environ, start_response)

    try:

        httpserver.serve(

            app, host=server_host, port=server_port,

            threadpool_workers=nworkers)

    finally:

        log.info('Shutdown.')

        try:

            os.remove(options.pidfile)

        except OSError:

            pass

if __name__ == '__main__':

    main()