charm-mistral/src/reactive/mistral_handlers.py

84 lines
2.7 KiB
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 subprocess
import charms_openstack.charm as charm
import charms.reactive as reactive
# This charm's library contains all of the handler code associated with
# sdn_charm
import charm.openstack.mistral as mistral # noqa
charm.use_defaults(
'charm.installed',
'amqp.connected',
'shared-db.connected',
'identity-service.connected',
'identity-service.available', # enables SSL support
'config.changed',
'update-status')
def horrible_hack_to_workaround_missing_package_files():
import tarfile
import shutil
resource_tar = 'files/resources.tar'
archive = tarfile.open(resource_tar)
archive.extractall('/usr/lib/python2.7/dist-packages/mistral')
shutil.copyfile(
'files/mapping.json',
'/usr/lib/python2.7/dist-packages/mistral/actions/openstack/mapping.json')
@reactive.when('charm.installed')
@reactive.when_not('config.rendered')
def mask_svc():
mistral_svcs = ['mistral-api', 'mistral-engine', 'mistral-executor']
for svc in mistral_svcs:
subprocess.check_call(['systemctl', 'stop', svc])
subprocess.check_call(['systemctl', 'mask', svc])
@reactive.when('config.rendered')
def unmask_svc():
mistral_svcs = ['mistral-api', 'mistral-engine', 'mistral-executor']
for svc in mistral_svcs:
subprocess.check_call(['systemctl', 'unmask', svc])
subprocess.check_call(['systemctl', 'start', svc])
@reactive.when('shared-db.available')
@reactive.when('identity-service.available')
@reactive.when('amqp.available')
def render_config(*args):
"""Render the configuration for charm when all the interfaces are
available.
"""
horrible_hack_to_workaround_missing_package_files()
with charm.provide_charm_instance() as charm_class:
charm_class.render_with_interfaces(args)
charm_class.db_sync()
charm_class.upgrade_if_available(args)
charm_class.assess_status()
reactive.set_state('config.rendered')
@reactive.when('ha.connected')
def cluster_connected(hacluster):
"""Configure HA resources in corosync"""
with charm.provide_charm_instance() as charm_class:
charm_class.configure_ha_resources(hacluster)
charm_class.assess_status()