114 lines
3.6 KiB
Python
114 lines
3.6 KiB
Python
# Copyright 2016 Canonical Ltd
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# The nova_cell_controller handlers class
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# bare functions are provided to the reactive handlers to perform the functions
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# needed on the class.
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from __future__ import absolute_import
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import collections
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import subprocess
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import charmhelpers.core.hookenv as hookenv
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import charms_openstack.charm
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import charms_openstack.adapters
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import charms_openstack.ip as os_ip
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PACKAGES = ['nova-conductor']
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NOVA_DIR = '/etc/nova/'
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NOVA_CONF = NOVA_DIR + "nova.conf"
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OPENSTACK_RELEASE_KEY = 'nova-charm.openstack-release-version'
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# select the default release function
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charms_openstack.charm.use_defaults('charm.default-select-release')
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class NovaCellControllerCharm(charms_openstack.charm.HAOpenStackCharm):
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"""NovaCellControllerCharm provides the specialisation of the OpenStackCharm
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functionality to manage a nova_cell_controller unit.
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"""
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release = 'mitaka'
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name = 'nova-cell-controller'
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packages = PACKAGES
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service_type = 'nova-cell-controller'
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default_service = 'nova-conductor'
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services = ['nova-conductor']
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# Note that the hsm interface is optional - defined in config.yaml
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required_relations = ['shared-db', 'amqp']
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restart_map = {
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NOVA_CONF: services,
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}
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# Package for release version detection
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release_pkg = 'nova-common'
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# Package codename map for nova-common
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package_codenames = {
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'nova-common': collections.OrderedDict([
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('13', 'mitaka'),
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('14', 'newton'),
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('15', 'ocata'),
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('16', 'pike'),
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('17', 'queens'),
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('18', 'rocky'),
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]),
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}
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sync_cmd = ['nova-manage', 'db', 'sync' ,'--local_cell']
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def get_amqp_credentials(self):
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"""Provide the default amqp username and vhost as a tuple.
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:returns (username, host): two strings to send to the amqp provider.
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"""
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return ('nova', 'openstack')
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def get_database_setup(self):
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"""Provide the default database credentials as a list of 3-tuples
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returns a structure of:
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[
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{'database': <database>,
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'username': <username>,
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'hostname': <hostname of this unit>
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'prefix': <the optional prefix for the database>, },
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]
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:returns [{'database': ...}, ...]: credentials for multiple databases
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"""
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return [{'username': 'nova', 'database': 'nova'}]
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def states_to_check(self, required_relations=None):
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"""Override the default states_to_check() for the assess_status
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functionality so that, if we have to have an HSM relation, then enforce
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it on the assess_status() call.
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If param required_relations is not None then it overrides the
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instance/class variable self.required_relations.
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:param required_relations: [list of state names]
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:returns: [states{} as per parent method]
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"""
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if required_relations is None:
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required_relations = self.required_relations
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return super(NovaCellControllerCharm, self).states_to_check(
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required_relations=required_relations)
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