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#!/usr/bin/python
import sys
from charmhelpers.core.hookenv import (
Hooks,
config,
is_relation_made,
log,
ERROR,
relation_ids,
relation_get,
relation_set,
service_name,
unit_get,
UnregisteredHookError,
)
from charmhelpers.core.host import (
restart_on_change,
)
from charmhelpers.fetch import (
apt_install,
apt_update,
filter_installed_packages,
)
from charmhelpers.contrib.openstack.utils import (
configure_installation_source,
openstack_upgrade_available,
)
from charmhelpers.contrib.storage.linux.ceph import ensure_ceph_keyring
from charmhelpers.payload.execd import execd_preinstall
from nova_compute_utils import (
create_libvirt_secret,
determine_packages,
import_authorized_keys,
import_keystone_ca_cert,
initialize_ssh_keys,
migration_enabled,
network_manager,
neutron_plugin,
do_openstack_upgrade,
public_ssh_key,
restart_map,
register_configs,
NOVA_CONF,
QUANTUM_CONF, NEUTRON_CONF,
ceph_config_file, CEPH_SECRET,
enable_shell, disable_shell,
fix_path_ownership,
)
from nova_compute_context import CEPH_SECRET_UUID
from socket import gethostname
hooks = Hooks()
CONFIGS = register_configs()
@hooks.hook()
def install():
execd_preinstall()
configure_installation_source(config('openstack-origin'))
apt_update()
apt_install(determine_packages(), fatal=True)
@hooks.hook('config-changed')
@restart_on_change(restart_map())
def config_changed():
global CONFIGS
if openstack_upgrade_available('nova-common'):
CONFIGS = do_openstack_upgrade()
if migration_enabled() and config('migration-auth-type') == 'ssh':
# Check-in with nova-c-c and register new ssh key, if it has just been
# generated.
initialize_ssh_keys()
if config('enable-resize') is True:
enable_shell(user='nova')
initialize_ssh_keys(user='nova')
else:
disable_shell(user='nova')
if config('instances-path') is not None:
fp = config('instances-path')
fix_path_ownership(fp, user='nova')
[compute_joined(rid) for rid in relation_ids('cloud-compute')]
CONFIGS.write_all()
@hooks.hook('amqp-relation-joined')
def amqp_joined(relation_id=None):
relation_set(relation_id=relation_id,
username=config('rabbit-user'),
vhost=config('rabbit-vhost'))
@hooks.hook('amqp-relation-changed')
@hooks.hook('amqp-relation-departed')
@restart_on_change(restart_map())
def amqp_changed():
if 'amqp' not in CONFIGS.complete_contexts():
log('amqp relation incomplete. Peer not ready?')
return
CONFIGS.write(NOVA_CONF)
# No need to write NEUTRON_CONF if neutron-plugin is managing it
if not relation_ids('neutron-plugin'):
if network_manager() == 'quantum' and neutron_plugin() == 'ovs':
CONFIGS.write(QUANTUM_CONF)
if network_manager() == 'neutron' and neutron_plugin() == 'ovs':
CONFIGS.write(NEUTRON_CONF)
@hooks.hook('shared-db-relation-joined')
def db_joined(rid=None):
if is_relation_made('pgsql-db'):
# error, postgresql is used
e = ('Attempting to associate a mysql database when there is already '
'associated a postgresql one')
log(e, level=ERROR)
raise Exception(e)
relation_set(relation_id=rid,
nova_database=config('database'),
nova_username=config('database-user'),
nova_hostname=unit_get('private-address'))
@hooks.hook('pgsql-db-relation-joined')
def pgsql_db_joined():
if is_relation_made('shared-db'):
# raise error
e = ('Attempting to associate a postgresql database when'
' there is already associated a mysql one')
log(e, level=ERROR)
raise Exception(e)
relation_set(database=config('database'))
@hooks.hook('shared-db-relation-changed')
@restart_on_change(restart_map())
def db_changed():
if 'shared-db' not in CONFIGS.complete_contexts():
log('shared-db relation incomplete. Peer not ready?')
return
CONFIGS.write(NOVA_CONF)
@hooks.hook('pgsql-db-relation-changed')
@restart_on_change(restart_map())
def postgresql_db_changed():
if 'pgsql-db' not in CONFIGS.complete_contexts():
log('pgsql-db relation incomplete. Peer not ready?')
return
CONFIGS.write(NOVA_CONF)
@hooks.hook('image-service-relation-changed')
@restart_on_change(restart_map())
def image_service_changed():
if 'image-service' not in CONFIGS.complete_contexts():
log('image-service relation incomplete. Peer not ready?')
return
CONFIGS.write(NOVA_CONF)
@hooks.hook('cloud-compute-relation-joined')
def compute_joined(rid=None):
# NOTE(james-page) in MAAS environments the actual hostname is a CNAME
# record so won't get scanned based on private-address which is an IP
# add the hostname configured locally to the relation.
settings = {
'hostname': gethostname()
}
if migration_enabled():
auth_type = config('migration-auth-type')
settings['migration_auth_type'] = auth_type
if auth_type == 'ssh':
settings['ssh_public_key'] = public_ssh_key()
relation_set(relation_id=rid, **settings)
if config('enable-resize'):
settings['nova_ssh_public_key'] = public_ssh_key(user='nova')
relation_set(relation_id=rid, **settings)
@hooks.hook('cloud-compute-relation-changed')
@restart_on_change(restart_map())
def compute_changed():
# rewriting all configs to pick up possible net or vol manager
# config advertised from controller.
CONFIGS.write_all()
import_authorized_keys()
import_authorized_keys(user='nova', prefix='nova')
import_keystone_ca_cert()
@hooks.hook('ceph-relation-joined')
@restart_on_change(restart_map())
def ceph_joined():
apt_install(filter_installed_packages(['ceph-common']), fatal=True)
@hooks.hook('ceph-relation-changed')
@restart_on_change(restart_map())
def ceph_changed():
if 'ceph' not in CONFIGS.complete_contexts():
log('ceph relation incomplete. Peer not ready?')
return
svc = service_name()
if not ensure_ceph_keyring(service=svc):
log('Could not create ceph keyring: peer not ready?')
return
CONFIGS.write(ceph_config_file())
CONFIGS.write(CEPH_SECRET)
CONFIGS.write(NOVA_CONF)
# With some refactoring, this can move into NovaComputeCephContext
# and allow easily extended to support other compute flavors.
if config('virt-type') in ['kvm', 'qemu', 'lxc']:
create_libvirt_secret(secret_file=CEPH_SECRET,
secret_uuid=CEPH_SECRET_UUID,
key=relation_get('key'))
@hooks.hook('amqp-relation-broken',
'ceph-relation-broken',
'image-service-relation-broken',
'shared-db-relation-broken',
'pgsql-db-relation-broken')
@restart_on_change(restart_map())
def relation_broken():
CONFIGS.write_all()
@hooks.hook('upgrade-charm')
def upgrade_charm():
for r_id in relation_ids('amqp'):
amqp_joined(relation_id=r_id)
@hooks.hook('nova-ceilometer-relation-changed')
@restart_on_change(restart_map())
def nova_ceilometer_relation_changed():
CONFIGS.write_all()
def main():
try:
hooks.execute(sys.argv)
except UnregisteredHookError as e:
log('Unknown hook {} - skipping.'.format(e))
if __name__ == '__main__':
main()
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