os-collect-config/os_collect_config/collect.py

118 lines
3.6 KiB
Python

# Copyright (c) 2013 Hewlett-Packard Development Company, L.P.
#
# 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 json
import os
import subprocess
import sys
from openstack.common import log
from os_collect_config import cache
from os_collect_config import cfn
from os_collect_config import common
from os_collect_config import ec2
from os_collect_config import exc
from os_collect_config import heat_local
from oslo.config import cfg
opts = [
cfg.StrOpt('command',
short='c',
help='Command to run on metadata changes.'),
cfg.StrOpt('cachedir',
default='/var/run/os-collect-config',
help='Directory in which to store local cache of metadata'),
]
CONF = cfg.CONF
logger = log.getLogger('os-collect-config')
COLLECTORS = (ec2, cfn)
def setup_conf():
ec2_group = cfg.OptGroup(name='ec2',
title='EC2 Metadata options')
cfn_group = cfg.OptGroup(name='cfn',
title='CloudFormation API Metadata options')
heat_local_group = cfg.OptGroup(name='heat-local',
title='Heat Local Metadata options')
CONF.register_group(ec2_group)
CONF.register_group(cfn_group)
CONF.register_group(heat_local_group)
CONF.register_cli_opts(ec2.opts, group='ec2')
CONF.register_cli_opts(cfn.opts, group='cfn')
CONF.register_cli_opts(heat_local.opts, group='heat_local')
CONF.register_cli_opts(opts)
def collect_all(collectors, store=False, requests_impl_map=None):
any_changed = False
if store:
paths_or_content = []
else:
paths_or_content = {}
for collector in collectors:
if requests_impl_map and collector.name in requests_impl_map:
requests_impl = requests_impl_map[collector.name]
else:
requests_impl = common.requests
try:
content = collector.Collector(
requests_impl=requests_impl).collect()
except exc.SourceNotAvailable:
logger.warn('Source [%s] Unavailable.' % collector.name)
continue
if store:
(changed, path) = cache.store(collector.name, content)
any_changed |= changed
paths_or_content.append(path)
else:
paths_or_content[collector.name] = content
return (any_changed, paths_or_content)
def __main__(args=sys.argv, requests_impl_map=None):
setup_conf()
CONF(args=args[1:], prog="os-collect-config")
log.setup("os-collect-config")
(any_changed, content) = collect_all(COLLECTORS, store=bool(CONF.command),
requests_impl_map=requests_impl_map)
if CONF.command:
if any_changed:
env = dict(os.environ)
env["OS_CONFIG_FILES"] = ':'.join(content)
logger.info("Executing %s" % CONF.command)
subprocess.call(CONF.command, env=env, shell=True)
for collector in COLLECTORS:
cache.commit(collector.name)
else:
logger.debug("No changes detected.")
else:
print json.dumps(content, indent=1)
if __name__ == '__main__':
__main__()