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#!/usr/bin/python
from base64 import b64decode
from charmhelpers.core.hookenv import (
log, ERROR, WARNING,
config,
is_relation_made,
relation_get,
relation_set,
relation_ids,
unit_get,
Hooks, UnregisteredHookError
)
from charmhelpers.fetch import (
apt_update,
apt_install,
filter_installed_packages,
)
from charmhelpers.core.host import (
restart_on_change,
lsb_release,
)
from charmhelpers.contrib.hahelpers.cluster import(
eligible_leader
)
from charmhelpers.contrib.hahelpers.apache import(
install_ca_cert
)
from charmhelpers.contrib.openstack.utils import (
configure_installation_source,
openstack_upgrade_available,
)
from charmhelpers.payload.execd import execd_preinstall
import sys
from quantum_utils import (
register_configs,
restart_map,
do_openstack_upgrade,
get_packages,
get_early_packages,
get_common_package,
valid_plugin,
configure_ovs,
reassign_agent_resources,
stop_services
)
hooks = Hooks()
CONFIGS = register_configs()
@hooks.hook('install')
def install():
execd_preinstall()
src = config('openstack-origin')
if (lsb_release()['DISTRIB_CODENAME'] == 'precise' and
src == 'distro'):
src = 'cloud:precise-folsom'
configure_installation_source(src)
apt_update(fatal=True)
if valid_plugin():
apt_install(filter_installed_packages(get_early_packages()),
fatal=True)
apt_install(filter_installed_packages(get_packages()),
fatal=True)
else:
log('Please provide a valid plugin config', level=ERROR)
sys.exit(1)
@hooks.hook('config-changed')
@restart_on_change(restart_map())
def config_changed():
global CONFIGS
if openstack_upgrade_available(get_common_package()):
CONFIGS = do_openstack_upgrade()
# Re-run joined hooks as config might have changed
for r_id in relation_ids('shared-db'):
db_joined(relation_id=r_id)
for r_id in relation_ids('pgsql-db'):
pgsql_db_joined(relation_id=r_id)
for r_id in relation_ids('amqp'):
amqp_joined(relation_id=r_id)
if valid_plugin():
CONFIGS.write_all()
configure_ovs()
else:
log('Please provide a valid plugin config', level=ERROR)
sys.exit(1)
@hooks.hook('upgrade-charm')
def upgrade_charm():
install()
config_changed()
@hooks.hook('shared-db-relation-joined')
def db_joined(relation_id=None):
if is_relation_made('pgsql-db'):
# raise error
e = ('Attempting to associate a mysql database when there is already '
'associated a postgresql one')
log(e, level=ERROR)
raise Exception(e)
relation_set(username=config('database-user'),
database=config('database'),
hostname=unit_get('private-address'),
relation_id=relation_id)
@hooks.hook('pgsql-db-relation-joined')
def pgsql_db_joined(relation_id=None):
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'),
relation_id=relation_id)
@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-departed')
@restart_on_change(restart_map())
def amqp_departed():
if 'amqp' not in CONFIGS.complete_contexts():
log('amqp relation incomplete. Peer not ready?')
return
CONFIGS.write_all()
@hooks.hook('shared-db-relation-changed',
'pgsql-db-relation-changed',
'amqp-relation-changed',
'cluster-relation-changed',
'cluster-relation-joined')
@restart_on_change(restart_map())
def db_amqp_changed():
CONFIGS.write_all()
@hooks.hook('quantum-network-service-relation-changed')
@restart_on_change(restart_map())
def nm_changed():
CONFIGS.write_all()
if relation_get('ca_cert'):
ca_crt = b64decode(relation_get('ca_cert'))
install_ca_cert(ca_crt)
@hooks.hook("cluster-relation-departed")
@restart_on_change(restart_map())
def cluster_departed():
if config('plugin') == 'nvp':
log('Unable to re-assign agent resources for failed nodes with nvp',
level=WARNING)
return
if eligible_leader(None):
reassign_agent_resources()
CONFIGS.write_all()
@hooks.hook('cluster-relation-broken')
@hooks.hook('stop')
def stop():
stop_services()
if __name__ == '__main__':
try:
hooks.execute(sys.argv)
except UnregisteredHookError as e:
log('Unknown hook {} - skipping.'.format(e))
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