#!/usr/bin/env python
# vim: tabstop=4 shiftwidth=4 softtabstop=4

# Copyright (c) 2013-2014 Rackspace, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#    http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
# implied.
# See the License for the specific language governing permissions and
# limitations under the License.

"""
Barbican worker server.
"""

import eventlet
import gettext
import os
import sys

# Oslo messaging RPC server uses eventlet.
eventlet.monkey_patch()

# 'Borrowed' from the Glance project:
# If ../barbican/__init__.py exists, add ../ to Python search path, so that
# it will override what happens to be installed in /usr/(local/)lib/python...
possible_topdir = os.path.normpath(os.path.join(os.path.abspath(sys.argv[0]),
                                   os.pardir,
                                   os.pardir))
if os.path.exists(os.path.join(possible_topdir, 'barbican', '__init__.py')):
    sys.path.insert(0, possible_topdir)


gettext.install('barbican', unicode=1)

from barbican.common import config
from barbican.openstack.common import log
from barbican.openstack.common import service
from barbican import queue
from barbican.queue import server
from oslo.config import cfg


def fail(returncode, e):
    sys.stderr.write("ERROR: {0}\n".format(e))
    sys.exit(returncode)


if __name__ == '__main__':
    try:
        config.parse_args()

        # Import and configure logging.
        log.setup('barbican')
        LOG = log.getLogger(__name__)
        LOG.debug("Booting up Barbican worker node...")

        # Queuing initialization
        CONF = cfg.CONF
        queue.init(CONF)

        service.launch(
            server.TaskServer()
        ).wait()
    except RuntimeError as e:
        fail(1, e)