#!@PYTHON@

# Copyright (C) 2010  Internet Systems Consortium.
#
# Permission to use, copy, modify, and distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SYSTEMS CONSORTIUM
# DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
# INTERNET SYSTEMS CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT,
# INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
# FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
# NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
# WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

# $Id$

import sys; sys.path.append ('@@PYTHONPATH@@')

from isc.config.cfgmgr import ConfigManager, ConfigManagerDataReadError
from isc.cc import SessionError
import signal
import os

# If B10_FROM_SOURCE is set in the environment, we use data files
# from a directory relative to that, otherwise we use the ones
# installed on the system
if "B10_FROM_SOURCE" in os.environ:
    DATA_PATH = os.environ["B10_FROM_SOURCE"]
else:
    PREFIX = "@prefix@"
    DATA_PATH = "@localstatedir@/@PACKAGE@".replace("${prefix}", PREFIX)

cm = None

def signal_handler(signal, frame):
    global cm
    if cm:
        cm.running = False

def main():
    global cm
    try:
        cm = ConfigManager(DATA_PATH)
        signal.signal(signal.SIGINT, signal_handler)
        signal.signal(signal.SIGTERM, signal_handler)
        cm.read_config()
        cm.notify_boss()
        cm.run()
    except SessionError as se:
        print("[b10-cfgmgr] Error creating config manager, "
              "is the command channel daemon running?")
        return 1
    except KeyboardInterrupt as kie:
        print("[b10-cfgmgr] Interrupted, exiting")
    except ConfigManagerDataReadError as cmdre:
        print("[b10-cfgmgr] " + str(cmdre))
        return 2
    if cm:
        return cm.write_config()
    return 0

if __name__ == "__main__":
    sys.exit(main())