def do_alarm_update(mc, args):
    '''Update the alarm state.'''
    fields = {}
    fields['alarm_id'] = args.id
    if args.state.upper() not in state_types:
            errmsg = ('Invalid state, not one of [' +
                      ', '.join(state_types) + ']')
            print(errmsg)
            return
    fields['state'] = args.state
    fields['lifecycle_state'] = args.lifecycle_state
    fields['link'] = args.link
    try:
        alarm = mc.alarms.update(**fields)
    except (osc_exc.ClientException, k_exc.HttpError) as he:
        raise osc_exc.CommandError('%s\n%s' % (he.message, he.details))
    else:
        print(jsonutils.dumps(alarm, indent=2))
Update the alarm state.