280 lines
		
	
	
		
			7.7 KiB
		
	
	
	
		
			Python
		
	
	
		
			Executable File
		
	
	
	
	
			
		
		
	
	
			280 lines
		
	
	
		
			7.7 KiB
		
	
	
	
		
			Python
		
	
	
		
			Executable File
		
	
	
	
	
#!/usr/bin/python
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import os
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import sys
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from subprocess import check_call
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from cinder_utils import (
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    clean_storage,
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    determine_packages,
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    do_openstack_upgrade,
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    ensure_block_device,
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    ensure_ceph_pool,
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    juju_log,
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    migrate_database,
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    prepare_lvm_storage,
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    register_configs,
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    restart_map,
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    service_enabled,
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    set_ceph_env_variables,
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    CLUSTER_RES,
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    CINDER_CONF,
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    CINDER_API_CONF,
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    CEPH_CONF,
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)
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from charmhelpers.core.hookenv import (
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    Hooks,
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    UnregisteredHookError,
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    config,
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    relation_get,
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    relation_ids,
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    relation_set,
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    service_name,
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    unit_get,
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)
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from charmhelpers.fetch import apt_install, apt_update
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from charmhelpers.core.host import lsb_release, restart_on_change
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from charmhelpers.contrib.openstack.utils import (
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    configure_installation_source, openstack_upgrade_available)
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from charmhelpers.contrib.storage.linux.ceph import ensure_ceph_keyring
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from charmhelpers.contrib.hahelpers.cluster import (
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    canonical_url,
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    eligible_leader,
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    is_leader,
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    get_hacluster_config,
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)
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from charmhelpers.payload.execd import execd_preinstall
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hooks = Hooks()
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CONFIGS = register_configs()
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@hooks.hook('install')
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def install():
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    execd_preinstall()
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    conf = config()
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    src = conf['openstack-origin']
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    if (lsb_release()['DISTRIB_CODENAME'] == 'precise' and
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       src == 'distro'):
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        src = 'cloud:precise-folsom'
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    configure_installation_source(src)
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    apt_update()
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    apt_install(determine_packages(), fatal=True)
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    if (service_enabled('volume') and
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       conf['block-device'] not in [None, 'None', 'none']):
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        bdev = ensure_block_device(conf['block-device'])
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        juju_log('Located valid block device: %s' % bdev)
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        if conf['overwrite'] in ['true', 'True', True]:
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            juju_log('Ensuring block device is clean: %s' % bdev)
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            clean_storage(bdev)
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        prepare_lvm_storage(bdev, conf['volume-group'])
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@hooks.hook('config-changed')
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@restart_on_change(restart_map())
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def config_changed():
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    if openstack_upgrade_available('cinder-common'):
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        do_openstack_upgrade(configs=CONFIGS)
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    CONFIGS.write_all()
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    configure_https()
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@hooks.hook('shared-db-relation-joined')
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def db_joined():
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    conf = config()
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    relation_set(database=conf['database'], username=conf['database-user'],
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                 hostname=unit_get('private-address'))
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@hooks.hook('shared-db-relation-changed')
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@restart_on_change(restart_map())
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def db_changed():
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    if 'shared-db' not in CONFIGS.complete_contexts():
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        juju_log('shared-db relation incomplete. Peer not ready?')
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        return
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    CONFIGS.write(CINDER_CONF)
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    if eligible_leader(CLUSTER_RES):
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        juju_log('Cluster leader, performing db sync')
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        migrate_database()
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@hooks.hook('amqp-relation-joined')
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def amqp_joined(relation_id=None):
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    conf = config()
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    relation_set(relation_id=relation_id,
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                 username=conf['rabbit-user'], vhost=conf['rabbit-vhost'])
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@hooks.hook('amqp-relation-changed')
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@restart_on_change(restart_map())
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def amqp_changed():
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    if 'amqp' not in CONFIGS.complete_contexts():
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        juju_log('amqp relation incomplete. Peer not ready?')
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        return
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    CONFIGS.write(CINDER_CONF)
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@hooks.hook('identity-service-relation-joined')
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def identity_joined(rid=None):
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    if not eligible_leader(CLUSTER_RES):
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        return
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    conf = config()
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    port = conf['api-listening-port']
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    url = canonical_url(CONFIGS) + ':%s/v1/$(tenant_id)s' % port
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    settings = {
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        'region': conf['region'],
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        'service': 'cinder',
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        'public_url': url,
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        'internal_url': url,
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        'admin_url': url,
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    }
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    relation_set(relation_id=rid, **settings)
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@hooks.hook('identity-service-relation-changed')
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@restart_on_change(restart_map())
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def identity_changed():
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    if 'identity-service' not in CONFIGS.complete_contexts():
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        juju_log('identity-service relation incomplete. Peer not ready?')
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        return
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    CONFIGS.write(CINDER_API_CONF)
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    configure_https()
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@hooks.hook('ceph-relation-joined')
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def ceph_joined():
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    if not os.path.isdir('/etc/ceph'):
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        os.mkdir('/etc/ceph')
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    apt_install('ceph-common', fatal=True)
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@hooks.hook('ceph-relation-changed')
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@restart_on_change(restart_map())
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def ceph_changed():
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    if 'ceph' not in CONFIGS.complete_contexts():
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        juju_log('ceph relation incomplete. Peer not ready?')
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        return
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    svc = service_name()
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    if not ensure_ceph_keyring(service=svc,
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                               user='cinder', group='cinder'):
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        juju_log('Could not create ceph keyring: peer not ready?')
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        return
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    CONFIGS.write(CEPH_CONF)
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    CONFIGS.write(CINDER_CONF)
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    set_ceph_env_variables(service=svc)
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    if eligible_leader(CLUSTER_RES):
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        _config = config()
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        ensure_ceph_pool(service=svc,
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                         replicas=_config['ceph-osd-replication-count'])
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@hooks.hook('cluster-relation-changed',
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            'cluster-relation-departed')
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@restart_on_change(restart_map())
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def cluster_changed():
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    CONFIGS.write_all()
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@hooks.hook('ha-relation-joined')
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def ha_joined():
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    config = get_hacluster_config()
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    resources = {
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        'res_cinder_vip': 'ocf:heartbeat:IPaddr2',
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        'res_cinder_haproxy': 'lsb:haproxy'
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    }
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    vip_params = 'params ip="%s" cidr_netmask="%s" nic="%s"' % \
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                 (config['vip'], config['vip_cidr'], config['vip_iface'])
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    resource_params = {
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        'res_cinder_vip': vip_params,
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        'res_cinder_haproxy': 'op monitor interval="5s"'
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    }
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    init_services = {
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        'res_cinder_haproxy': 'haproxy'
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    }
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    clones = {
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        'cl_cinder_haproxy': 'res_cinder_haproxy'
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    }
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    relation_set(init_services=init_services,
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                 corosync_bindiface=config['ha-bindiface'],
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                 corosync_mcastport=config['ha-mcastport'],
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                 resources=resources,
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                 resource_params=resource_params,
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                 clones=clones)
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@hooks.hook('ha-relation-changed')
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def ha_changed():
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    clustered = relation_get('clustered')
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    if not clustered or clustered in [None, 'None', '']:
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        juju_log('ha_changed: hacluster subordinate not fully clustered.')
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        return
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    if not is_leader(CLUSTER_RES):
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        juju_log('ha_changed: hacluster complete but we are not leader.')
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        return
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    juju_log('Cluster configured, notifying other services and updating '
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             'keystone endpoint configuration')
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    for rid in relation_ids('identity-service'):
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        identity_joined(rid=rid)
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@hooks.hook('image-service-relation-changed')
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@restart_on_change(restart_map())
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def image_service_changed():
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    CONFIGS.write(CINDER_CONF)
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@hooks.hook('amqp-relation-broken',
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            'ceph-relation-broken',
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            'identity-service-relation-broken',
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            'image-service-relation-broken',
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            'shared-db-relation-broken')
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@restart_on_change(restart_map())
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def relation_broken():
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    CONFIGS.write_all()
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def configure_https():
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    '''
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    Enables SSL API Apache config if appropriate and kicks identity-service
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    with any required api updates.
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    '''
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    # need to write all to ensure changes to the entire request pipeline
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    # propagate (c-api, haprxy, apache)
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    CONFIGS.write_all()
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    if 'https' in CONFIGS.complete_contexts():
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        cmd = ['a2ensite', 'openstack_https_frontend']
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        check_call(cmd)
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    else:
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        cmd = ['a2dissite', 'openstack_https_frontend']
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        check_call(cmd)
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    for rid in relation_ids('identity-service'):
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        identity_joined(rid=rid)
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@hooks.hook('upgrade-charm')
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def upgrade_charm():
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    for rel_id in relation_ids('amqp'):
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        amqp_joined(relation_id=rel_id)
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if __name__ == '__main__':
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    try:
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        hooks.execute(sys.argv)
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    except UnregisteredHookError as e:
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        juju_log('Unknown hook {} - skipping.'.format(e))
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