charm-neutron-openvswitch/hooks/neutron_ovs_hooks.py
James Page ed83413331 Re-license charm as Apache-2.0
All contributions to this charm where made under Canonical
copyright; switch to Apache-2.0 license as agreed so we
can move forward with official project status.

Change-Id: I7bd44dc15ad951bf2536e5ee10de01ec592b8970
2016-07-01 17:36:39 +01:00

156 lines
4.1 KiB
Python
Executable File

#!/usr/bin/python
#
# Copyright 2016 Canonical Ltd
#
# 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 sys
from copy import deepcopy
from charmhelpers.contrib.openstack.utils import (
config_value_changed,
git_install_requested,
os_requires_version,
pausable_restart_on_change as restart_on_change,
)
from charmhelpers.core.hookenv import (
Hooks,
UnregisteredHookError,
config,
log,
relation_set,
relation_ids,
)
from neutron_ovs_utils import (
DHCP_PACKAGES,
DVR_PACKAGES,
METADATA_PACKAGES,
configure_ovs,
git_install,
get_topics,
get_shared_secret,
register_configs,
restart_map,
use_dvr,
enable_nova_metadata,
enable_local_dhcp,
install_packages,
purge_packages,
assess_status,
)
hooks = Hooks()
CONFIGS = register_configs()
@hooks.hook()
def install():
install_packages()
git_install(config('openstack-origin-git'))
@hooks.hook('neutron-plugin-relation-changed')
@hooks.hook('config-changed')
@restart_on_change(restart_map())
def config_changed():
install_packages()
if git_install_requested():
if config_value_changed('openstack-origin-git'):
git_install(config('openstack-origin-git'))
configure_ovs()
CONFIGS.write_all()
for rid in relation_ids('zeromq-configuration'):
zeromq_configuration_relation_joined(rid)
for rid in relation_ids('neutron-plugin'):
neutron_plugin_joined(relation_id=rid)
@hooks.hook('neutron-plugin-api-relation-changed')
@restart_on_change(restart_map())
def neutron_plugin_api_changed():
if use_dvr():
install_packages()
else:
purge_packages(DVR_PACKAGES)
configure_ovs()
CONFIGS.write_all()
# If dvr setting has changed, need to pass that on
for rid in relation_ids('neutron-plugin'):
neutron_plugin_joined(relation_id=rid)
@hooks.hook('neutron-plugin-relation-joined')
def neutron_plugin_joined(relation_id=None):
if enable_local_dhcp():
install_packages()
else:
pkgs = deepcopy(DHCP_PACKAGES)
# NOTE: only purge metadata packages if dvr is not
# in use as this will remove the l3 agent
# see https://pad.lv/1515008
if not use_dvr():
pkgs.extend(METADATA_PACKAGES)
purge_packages(pkgs)
secret = get_shared_secret() if enable_nova_metadata() else None
rel_data = {
'metadata-shared-secret': secret,
}
relation_set(relation_id=relation_id, **rel_data)
@hooks.hook('amqp-relation-joined')
def amqp_joined(relation_id=None):
relation_set(relation_id=relation_id,
username=config('rabbit-user'),
vhost=config('rabbit-vhost'))
@hooks.hook('amqp-relation-changed')
@hooks.hook('amqp-relation-departed')
@restart_on_change(restart_map())
def amqp_changed():
if 'amqp' not in CONFIGS.complete_contexts():
log('amqp relation incomplete. Peer not ready?')
return
CONFIGS.write_all()
@hooks.hook('zeromq-configuration-relation-joined')
@os_requires_version('kilo', 'neutron-common')
def zeromq_configuration_relation_joined(relid=None):
relation_set(relation_id=relid,
topics=" ".join(get_topics()),
users="neutron")
@hooks.hook('zeromq-configuration-relation-changed')
@restart_on_change(restart_map(), stopstart=True)
def zeromq_configuration_relation_changed():
CONFIGS.write_all()
def main():
try:
hooks.execute(sys.argv)
except UnregisteredHookError as e:
log('Unknown hook {} - skipping.'.format(e))
assess_status(CONFIGS)
if __name__ == '__main__':
main()