QMP/qom-list

#!/usr/bin/python
##
# QEMU Object Model test tools
#
# Copyright IBM, Corp. 2011
#
# Authors:
#  Anthony Liguori   <aliguori@us.ibm.com>
#
# This work is licensed under the terms of the GNU GPL, version 2 or later.  See
# the COPYING file in the top-level directory.
##

import sys
import os
from qmp import QEMUMonitorProtocol

cmd, args = sys.argv[0], sys.argv[1:]
socket_path = None
path = None
prop = None

def usage():
    return '''environment variables:
    QMP_SOCKET=<path | addr:port>
usage:
    %s [-h] [-s <QMP socket path | addr:port>] [<path>]
''' % cmd

def usage_error(error_msg = "unspecified error"):
    sys.stderr.write('%s\nERROR: %s\n' % (usage(), error_msg))
    exit(1)

if len(args) > 0:
    if args[0] == "-h":
        print usage()
        exit(0);
    elif args[0] == "-s":
        try:
            socket_path = args[1]
        except:
            usage_error("missing argument: QMP socket path or address");
        args = args[2:]

if not socket_path:
    if os.environ.has_key('QMP_SOCKET'):
        socket_path = os.environ['QMP_SOCKET']
    else:
        usage_error("no QMP socket path or address given");

srv = QEMUMonitorProtocol(socket_path)
srv.connect()

if len(args) == 0:
    print '/'
    sys.exit(0)

for item in srv.command('qom-list', path=args[0]):
    if item['type'].startswith('child<'):
        print '%s/' % item['name']
    elif item['type'].startswith('link<'):
        print '@%s/' % item['name']
    else:
        print '%s' % item['name']