#!/usr/bin/python
# Copyright (c) 2010 OpenStack, LLC.
#
# 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.

import os
import signal
import sys
import time
from ConfigParser import ConfigParser

from swift.stats.log_uploader import LogUploader
from swift.common.utils import get_logger

if __name__ == '__main__':
    if len(sys.argv) < 3:
        print "Usage: swift-log-uploader CONFIG_FILE plugin"
        sys.exit()

    c = ConfigParser()
    if not c.read(sys.argv[1]):
        print "Unable to read config file."
        sys.exit(1)

    if c.has_section('log-processor'):
        parser_conf = dict(c.items('log-processor'))
    else:
        print "Unable to find log-processor config section in %s." % sys.argv[1]
        sys.exit(1)
    
    plugin = sys.argv[2]
    section_name = 'log-processor-%s' % plugin
    if c.has_section(section_name):
        uploader_conf.update(dict(c.items(section_name)))
    else:
        print "Unable to find %s config section in %s." % (section_name,
                                                           sys.argv[1])
        sys.exit(1)

    try:
        os.setsid()
    except OSError:
        pass

    logger = get_logger(uploader_conf, 'swift-log-uploader')

    def kill_children(*args):
        signal.signal(signal.SIGTERM, signal.SIG_IGN)
        os.killpg(0, signal.SIGTERM)
        sys.exit()

    signal.signal(signal.SIGTERM, kill_children)

    log_dir = uploader_conf.get('log_dir', '/var/log/swift/')
    swift_account = uploader_conf['swift_account']
    container_name = uploader_conf['container_name']
    source_filename_format = uploader_conf['source_filename_format']
    proxy_server_conf_loc = uploader_conf.get('proxy_server_conf',
                                              '/etc/swift/proxy-server.conf')
    try:
        c = ConfigParser()
        c.read(proxy_server_conf_loc)
        proxy_server_conf = dict(c.items('proxy-server'))
    except:
        proxy_server_conf = None
    uploader = LogUploader(log_dir, swift_account, container_name,
        source_filename_format, proxy_server_conf, logger)
    logger.info("Uploading logs")
    start = time.time()
    uploader.upload_all_logs()
    logger.info("Uploading logs complete (%0.2f minutes)" %
        ((time.time()-start)/60))