ansible/contrib/inventory/openstack.py
Monty Taylor cac00add8d Update to final shade inventory interface
shade has an inventory interface that is cleaner. We should use it.
2015-10-21 06:13:50 +09:00

190 lines
6.1 KiB
Python
Executable file

#!/usr/bin/env python
# Copyright (c) 2012, Marco Vito Moscaritolo <marco@agavee.com>
# Copyright (c) 2013, Jesse Keating <jesse.keating@rackspace.com>
# Copyright (c) 2015, Hewlett-Packard Development Company, L.P.
#
# This module is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This software is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this software. If not, see <http://www.gnu.org/licenses/>.
# The OpenStack Inventory module uses os-client-config for configuration.
# https://github.com/stackforge/os-client-config
# This means it will either:
# - Respect normal OS_* environment variables like other OpenStack tools
# - Read values from a clouds.yaml file.
# If you want to configure via clouds.yaml, you can put the file in:
# - Current directory
# - ~/.config/openstack/clouds.yaml
# - /etc/openstack/clouds.yaml
# - /etc/ansible/openstack.yml
# The clouds.yaml file can contain entries for multiple clouds and multiple
# regions of those clouds. If it does, this inventory module will connect to
# all of them and present them as one contiguous inventory.
#
# See the adjacent openstack.yml file for an example config file
import argparse
import collections
import os
import sys
import time
try:
import json
except:
import simplejson as json
import os_client_config
import shade
import shade.inventory
CONFIG_FILES = ['/etc/ansible/openstack.yaml']
def get_groups_from_server(server_vars):
groups = []
region = server_vars['region']
cloud = server_vars['cloud']
metadata = server_vars.get('metadata', {})
# Create a group for the cloud
groups.append(cloud)
# Create a group on region
groups.append(region)
# And one by cloud_region
groups.append("%s_%s" % (cloud, region))
# Check if group metadata key in servers' metadata
if 'group' in metadata:
groups.append(metadata['group'])
for extra_group in metadata.get('groups', '').split(','):
if extra_group:
groups.append(extra_group)
groups.append('instance-%s' % server_vars['id'])
groups.append(server_vars['name'])
for key in ('flavor', 'image'):
if 'name' in server_vars[key]:
groups.append('%s-%s' % (key, server_vars[key]['name']))
for key, value in iter(metadata.items()):
groups.append('meta-%s_%s' % (key, value))
az = server_vars.get('az', None)
if az:
# Make groups for az, region_az and cloud_region_az
groups.append(az)
groups.append('%s_%s' % (region, az))
groups.append('%s_%s_%s' % (cloud, region, az))
return groups
def get_host_groups(inventory):
(cache_file, cache_expiration_time) = get_cache_settings()
if is_cache_stale(cache_file, cache_expiration_time):
groups = to_json(get_host_groups_from_cloud(inventory))
open(cache_file, 'w').write(groups)
else:
groups = open(cache_file, 'r').read()
return groups
def get_host_groups_from_cloud(inventory):
groups = collections.defaultdict(list)
hostvars = {}
for server in inventory.list_hosts():
if 'interface_ip' not in server:
continue
for group in get_groups_from_server(server):
groups[group].append(server['id'])
hostvars[server['id']] = dict(
ansible_ssh_host=server['interface_ip'],
openstack=server,
)
groups['_meta'] = {'hostvars': hostvars}
return groups
def is_cache_stale(cache_file, cache_expiration_time):
''' Determines if cache file has expired, or if it is still valid '''
if os.path.isfile(cache_file):
mod_time = os.path.getmtime(cache_file)
current_time = time.time()
if (mod_time + cache_expiration_time) > current_time:
return False
return True
def get_cache_settings():
config = os_client_config.config.OpenStackConfig(
config_files=os_client_config.config.CONFIG_FILES + CONFIG_FILES)
# For inventory-wide caching
cache_expiration_time = config.get_cache_expiration_time()
cache_path = config.get_cache_path()
if not os.path.exists(cache_path):
os.makedirs(cache_path)
cache_file = os.path.join(cache_path, 'ansible-inventory.cache')
return (cache_file, cache_expiration_time)
def to_json(in_dict):
return json.dumps(in_dict, sort_keys=True, indent=2)
def parse_args():
parser = argparse.ArgumentParser(description='OpenStack Inventory Module')
parser.add_argument('--private',
action='store_true',
help='Use private address for ansible host')
parser.add_argument('--refresh', action='store_true',
help='Refresh cached information')
parser.add_argument('--debug', action='store_true', default=False,
help='Enable debug output')
group = parser.add_mutually_exclusive_group(required=True)
group.add_argument('--list', action='store_true',
help='List active servers')
group.add_argument('--host', help='List details about the specific host')
return parser.parse_args()
def main():
args = parse_args()
try:
config_files = os_client_config.config.CONFIG_FILES + CONFIG_FILES
shade.simple_logging(debug=args.debug)
inventory = shade.inventory.OpenStackInventory(
refresh=args.refresh,
config_files=config_files,
private=args.private,
)
if args.list:
output = get_host_groups(inventory)
elif args.host:
output = to_json(inventory.get_host(args.host))
print(output)
except shade.OpenStackCloudException as e:
sys.stderr.write('%s\n' % e.message)
sys.exit(1)
sys.exit(0)
if __name__ == '__main__':
main()