116 lines
3.8 KiB
Python
116 lines
3.8 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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import os
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from collections import OrderedDict
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from charmhelpers.core.hookenv import (
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relation_ids,
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service_name,
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)
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from charmhelpers.contrib.openstack import (
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templating,
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context,
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)
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from charmhelpers.contrib.openstack.utils import (
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get_os_codename_package,
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)
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from charmhelpers.contrib.openstack.alternatives import install_alternative
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from charmhelpers.core.host import mkdir
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PACKAGES = [
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'ceph-common',
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'cinder-backup',
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]
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CHARM_CEPH_CONF = '/var/lib/charm/{}/ceph.conf'
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CEPH_CONF = '/etc/ceph/ceph.conf'
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TEMPLATES = 'templates/'
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# Map config files to hook contexts and services that will be associated
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# with file in restart_on_changes()'s service map.
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CONFIG_FILES = {}
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def ceph_config_file():
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return CHARM_CEPH_CONF.format(service_name())
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def register_configs():
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"""Register config files with their respective contexts.
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Registration of some configs may not be required depending on
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existing of certain relations.
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"""
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# if called without anything installed (eg during install hook)
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# just default to earliest supported release. configs dont get touched
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# till post-install, anyway.
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release = get_os_codename_package('cinder-common', fatal=False) or 'folsom'
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configs = templating.OSConfigRenderer(templates_dir=TEMPLATES,
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openstack_release=release)
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confs = []
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if relation_ids('ceph'):
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# Add charm ceph configuration to resources and
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# ensure directory actually exists
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mkdir(os.path.dirname(ceph_config_file()))
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mkdir(os.path.dirname(CEPH_CONF))
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# Install ceph config as an alternative for co-location with
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# ceph and ceph-osd charms - nova-compute ceph.conf will be
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# lower priority that both of these but thats OK
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if not os.path.exists(ceph_config_file()):
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# touch file for pre-templated generation
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open(ceph_config_file(), 'w').close()
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install_alternative(os.path.basename(CEPH_CONF),
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CEPH_CONF, ceph_config_file())
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CONFIG_FILES[ceph_config_file()] = {
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'hook_contexts': [context.CephContext()],
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'services': ['cinder-backup'],
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}
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confs.append(ceph_config_file())
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for conf in confs:
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configs.register(conf, CONFIG_FILES[conf]['hook_contexts'])
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return configs
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def restart_map():
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"""Determine the correct resource map to be passed to
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charmhelpers.core.restart_on_change() based on the services configured.
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:returns: dict: A dictionary mapping config file to lists of services
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that should be restarted when file changes.
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"""
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_map = []
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for f, ctxt in CONFIG_FILES.iteritems():
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svcs = []
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for svc in ctxt['services']:
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svcs.append(svc)
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if svcs:
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_map.append((f, svcs))
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return OrderedDict(_map)
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def set_ceph_env_variables(service):
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# XXX: Horrid kludge to make cinder-backup use
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# a different ceph username than admin
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env = open('/etc/environment', 'r').read()
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if 'CEPH_ARGS' not in env:
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with open('/etc/environment', 'a') as out:
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out.write('CEPH_ARGS="--id %s"\n' % service)
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with open('/etc/init/cinder-backup.override', 'w') as out:
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out.write('env CEPH_ARGS="--id %s"\n' % service)
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