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Viewing changes to serve-branches

  • Committer: Tom Haddon
  • Date: 2008-11-24 20:26:26 UTC
  • mto: This revision was merged to the branch mainline in revision 246.
  • Revision ID: tom.haddon@canonical.com-20081124202626-x0sva3e7zxlqtckw
Allow the script to run as root or another user, but start the loggerhead process as the correct user

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serve-branches
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import os
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import sys
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from bzrlib.plugin import load_plugins
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from bzrlib.transport import get_transport
 
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from optparse import OptionParser
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from paste import httpserver
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from paste.httpexceptions import HTTPExceptionHandler, HTTPInternalServerError
 
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from paste.httpexceptions import HTTPExceptionHandler
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from paste.translogger import TransLogger
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from loggerhead import __version__
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from loggerhead.apps.transport import (
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    BranchesFromTransportRoot, UserBranchesFromTransportRoot)
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from loggerhead.config import LoggerheadConfig
 
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from loggerhead.apps.filesystem import (
 
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    BranchesFromFileSystemRoot, UserBranchesFromFileSystemRoot)
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from loggerhead.util import Reloader
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from loggerhead.apps.error import ErrorHandlerApp
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def command_line_parser():
 
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    parser = OptionParser("%prog [options] <path>")
 
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    parser.set_defaults(
 
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        user_dirs=False,
 
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        show_version=False,
 
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        log_folder=None,
 
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        )
 
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    parser.add_option("--user-dirs", action="store_true", dest="user_dirs",
 
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                      help="Serve user directories as ~user.")
 
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    parser.add_option("--trunk-dir", metavar="DIR",
 
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                      help="The directory that contains the trunk branches.")
 
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    parser.add_option("--port", dest="user_port",
 
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                      help=("Port Loggerhead should listen on "
 
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                            "(defaults to 8080)."))
 
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    parser.add_option("--host", dest="user_host",
 
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                      help="Host Loggerhead should listen on.")
 
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    parser.add_option("--prefix", dest="user_prefix",
 
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                      help="Specify host prefix.")
 
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    parser.add_option("--profile", action="store_true", dest="profile",
 
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                      help="Generate callgrind profile data to "
 
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                        "%d-stats.callgrind on each request.")
 
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    parser.add_option("--reload", action="store_true", dest="reload",
 
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                      help="Restarts the application when changing python"
 
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                           " files. Only used for development purposes.")
 
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    parser.add_option('--log-folder', dest="log_folder",
 
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                      type=str, help="The directory to place log files in.")
 
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    parser.add_option("--version", action="store_true", dest="show_version",
 
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                      help="Print the software version and exit")
 
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    return parser
 
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def main(args):
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    config = LoggerheadConfig()
 
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    parser = command_line_parser()
 
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    (options, args) = parser.parse_args(sys.argv[1:])
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    if config.get_option('show_version'):
 
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    if options.show_version:
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        print "loggerhead %s" % __version__
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        sys.exit(0)
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    if config.arg_count > 1:
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        config.print_help()
 
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    if len(args) > 1:
 
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        parser.print_help()
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        sys.exit(1)
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    elif config.arg_count == 1:
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        path = config.get_arg(0)
 
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    elif len(args) == 1:
 
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        [path] = args
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    else:
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        path = '.'
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    load_plugins()
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    transport = get_transport(path)
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    if config.get_option('trunk_dir') and not config.get_option('user_dirs'):
 
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    if not os.path.isdir(path):
 
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        print "%s is not a directory" % path
 
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        sys.exit(1)
 
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    if options.trunk_dir and not options.user_dirs:
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        print "--trunk-dir is only valid with --user-dirs"
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        sys.exit(1)
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    if config.get_option('reload'):
 
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    if options.reload:
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        if Reloader.is_installed():
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            Reloader.install()
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        else:
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            return Reloader.restart_with_reloader()
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    if config.get_option('user_dirs'):
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        if not config.get_option('trunk_dir'):
 
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    if options.user_dirs:
 
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        if not options.trunk_dir:
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            print "You didn't specify a directory for the trunk directories."
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            sys.exit(1)
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        app = UserBranchesFromTransportRoot(transport, config)
 
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        app = UserBranchesFromFileSystemRoot(path, options.trunk_dir)
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    else:
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        app = BranchesFromTransportRoot(transport, config)
 
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        app = BranchesFromFileSystemRoot(path)
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    # setup_logging()
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    logging.basicConfig()
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    logging.getLogger('').setLevel(logging.DEBUG)
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    logger = getattr(app, 'log', logging.getLogger('loggerhead'))
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    if config.get_option('log_folder'):
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        logfile_path = os.path.join(
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            config.get_option('log_folder'), 'serve-branches.log')
 
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    if options.log_folder:
 
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        logfile_path = os.path.join(options.log_folder, 'serve-branches.log')
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    else:
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        logfile_path = 'serve-branches.log'
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    logfile = logging.FileHandler(logfile_path, 'a')
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    logfile.setFormatter(formatter)
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    logfile.setLevel(logging.DEBUG)
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    logger.addHandler(logfile)
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    # setup_logging() #end
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    app = ErrorHandlerApp(app)
 
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    app = HTTPExceptionHandler(app)
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    app = TransLogger(app, logger=logger)
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    if config.get_option('profile'):
 
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    if options.profile:
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        from loggerhead.middleware.profile import LSProfMiddleware
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        app = LSProfMiddleware(app)
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    if config.get_option('memory_profile'):
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        from dozer import Dozer
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        app = Dozer(app)
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    if not config.get_option('user_prefix'):
 
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    if not options.user_prefix:
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        prefix = '/'
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    else:
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        prefix = config.get_option('user_prefix')
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        if not prefix.startswith('/'):
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            prefix = '/' + prefix
 
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        prefix = options.user_prefix
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    try:
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        from paste.deploy.config import PrefixMiddleware
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    except ImportError:
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        cant_proxy_correctly_message = (
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            'Unsupported configuration: PasteDeploy not available, but '
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            'loggerhead appears to be behind a proxy.')
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        def check_not_proxied(app):
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            def wrapped(environ, start_response):
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                if 'HTTP_X_FORWARDED_SERVER' in environ:
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                    exc = HTTPInternalServerError()
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                    exc.explanation = cant_proxy_correctly_message
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                    raise exc
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                return app(environ, start_response)
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            return wrapped
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        app = check_not_proxied(app)
 
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        pass
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    else:
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        app = PrefixMiddleware(app, prefix=prefix)
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    app = HTTPExceptionHandler(app)
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    app = ErrorHandlerApp(app)
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    if not config.get_option('user_port'):
 
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    if not options.user_port:
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        port = '8080'
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    else:
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        port = config.get_option('user_port')
 
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        port = options.user_port
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    if not config.get_option('user_host'):
 
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    if not options.user_host:
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        host = '0.0.0.0'
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    else:
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        host = config.get_option('user_host')
 
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        host = options.user_host
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    httpserver.serve(app, host=host, port=port)
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