charm-ceph-rbd-mirror/src/reactive/ceph_rbd_mirror_handlers.py

136 lines
5.6 KiB
Python

# Copyright 2018 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 charms.reactive as reactive
import charms_openstack.bus
import charms_openstack.charm as charm
import charmhelpers.core as ch_core
charms_openstack.bus.discover()
# Use the charms.openstack defaults for common states and hooks
charm.use_defaults(
'charm.installed',
'update-status',
'upgrade-charm')
@reactive.when_all('ceph-local.connected', 'ceph-remote.connected')
@reactive.when_not_all('ceph-local.available', 'ceph-remote.available')
def request_keys():
with charm.provide_charm_instance() as charm_instance:
for flag in ('ceph-local.connected', 'ceph-remote.connected'):
endpoint = reactive.endpoint_from_flag(flag)
ch_core.hookenv.log('Ceph endpoint "{}" connected, requesting key'
.format(endpoint.endpoint_name),
level=ch_core.hookenv.INFO)
endpoint.request_key()
charm_instance.assess_status()
@reactive.when('config.changed')
@reactive.when('ceph-local.available')
@reactive.when('ceph-remote.available')
def config_changed():
with charm.provide_charm_instance() as charm_instance:
charm_instance.upgrade_if_available([
reactive.endpoint_from_flag('ceph-local.available'),
reactive.endpoint_from_flag('ceph-remote.available'),
])
charm_instance.assess_status()
@reactive.when_not('config.rendered')
def disable_services():
with charm.provide_charm_instance() as charm_instance:
for service in charm_instance.services:
ch_core.host.service('disable', service)
ch_core.host.service('stop', service)
charm_instance.assess_status()
@reactive.when('ceph-local.available')
@reactive.when('ceph-remote.available')
def render_stuff(*args):
with charm.provide_charm_instance() as charm_instance:
for endpoint in args:
if not endpoint.key:
ch_core.hookenv.log('Ceph endpoint "{}" flagged available yet '
'no key. Relation is probably departing.',
level=ch_core.hookenv.INFO)
return
ch_core.hookenv.log('Ceph endpoint "{}" available, configuring '
'keyring'.format(endpoint.endpoint_name),
level=ch_core.hookenv.INFO)
ch_core.hookenv.log('Pools: "{}"'.format(endpoint.pools),
level=ch_core.hookenv.INFO)
cluster_name = (
'remote') if endpoint.endpoint_name == 'ceph-remote' else None
charm_instance.configure_ceph_keyring(endpoint,
cluster_name=cluster_name)
charm_instance.render_with_interfaces(args)
for service in charm_instance.services:
ch_core.host.service('enable', service)
ch_core.host.service('start', service)
reactive.set_flag('config.rendered')
charm_instance.assess_status()
@reactive.when('leadership.is_leader')
@reactive.when('refresh.pools')
@reactive.when('ceph-local.available')
@reactive.when('ceph-remote.available')
def refresh_pools():
for endpoint in 'ceph-local', 'ceph-remote':
endpoint = reactive.endpoint_from_name(endpoint)
endpoint.refresh_pools()
reactive.clear_flag('refresh.pools')
@reactive.when('leadership.is_leader')
@reactive.when('config.rendered')
@reactive.when('ceph-local.available')
@reactive.when('ceph-remote.available')
def configure_pools():
local = reactive.endpoint_from_flag('ceph-local.available')
remote = reactive.endpoint_from_flag('ceph-remote.available')
with charm.provide_charm_instance() as charm_instance:
for pool, attrs in charm_instance.eligible_pools(local.pools).items():
if not (charm_instance.mirror_pool_enabled(pool) and
charm_instance.mirror_pool_has_peers(pool)):
charm_instance.mirror_pool_enable(pool)
pg_num = attrs['parameters'].get('pg_num', None)
max_bytes = attrs['quota'].get('max_bytes', None)
max_objects = attrs['quota'].get('max_objects', None)
if 'erasure_code_profile' in attrs['parameters']:
ec_profile = attrs['parameters'].get(
'erasure_code_profile', None)
remote.create_erasure_pool(pool,
erasure_profile=ec_profile,
pg_num=pg_num,
app_name='rbd',
max_bytes=max_bytes,
max_objects=max_objects)
else:
size = attrs['parameters'].get('size', None)
remote.create_replicated_pool(pool, replicas=size,
pg_num=pg_num,
app_name='rbd',
max_bytes=max_bytes,
max_objects=max_objects)