def configure_kafka(zk):
hookenv.status_set('maintenance', 'Setting up Kafka')
kafka = Kafka()
zks = zk.zookeepers()
network_interface = hookenv.config().get('network_interface')
kafka.configure_kafka(zks, network_interface)
kafka.start()
set_state('kafka.started')
hookenv.status_set('active', 'Ready')
def install_kafka(*args):
kafka = Kafka()
if kafka.verify_resources():
hookenv.status_set('maintenance', 'Installing Kafka')
kafka.install()
kafka.open_ports()
set_state('kafka.installed')
def update_config(zk):
"""Configure ready zookeepers and restart kafka if needed.
Also restart if network_interface has changed.
As zks come and go, server.properties will be updated. When that file
changes, restart Kafka and set appropriate status messages.
"""
hookenv.log('Checking Zookeeper configuration')
kafka = Kafka()
zks = zk.zookeepers()
network_interface = hookenv.config().get('network_interface')
kafka.configure_kafka(zks, network_interface)
server_cfg = DistConfig().path('kafka_conf') / 'server.properties'
if any_file_changed([server_cfg]):
hookenv.status_set('maintenance', 'Server config changed: restarting Kafka')
hookenv.log('Server config changed: restarting Kafka')
kafka.restart()
hookenv.status_set('active', 'Ready')
def install_kafka(*args):
kafka = Kafka()
if kafka.verify_resources():
hookenv.status_set('maintenance', 'Installing Kafka')
kafka.install()
kafka.open_ports()
set_state('kafka.installed')
def configure_kafka(zk):
hookenv.status_set('maintenance', 'Setting up Kafka')
kafka = Kafka()
zks = zk.zookeepers()
network_interface = hookenv.config().get('network_interface')
kafka.configure_kafka(zks, network_interface)
kafka.start()
set_state('kafka.started')
hookenv.status_set('active', 'Ready')
def update_config(zk):
"""Configure ready zookeepers and restart kafka if needed.
Also restart if network_interface has changed.
As zks come and go, server.properties will be updated. When that file
changes, restart Kafka and set appropriate status messages.
"""
hookenv.log('Checking Zookeeper configuration')
kafka = Kafka()
zks = zk.zookeepers()
network_interface = hookenv.config().get('network_interface')
kafka.configure_kafka(zks, network_interface)
server_cfg = DistConfig().path('kafka_conf') / 'server.properties'
if any_file_changed([server_cfg]):
hookenv.status_set('maintenance', 'Server config changed: restarting Kafka')
hookenv.log('Server config changed: restarting Kafka')
kafka.restart()
hookenv.status_set('active', 'Ready')
def stop_kafka_waiting_for_zookeeper_ready():
hookenv.status_set('maintenance', 'Zookeeper not ready, stopping Kafka')
kafka = Kafka()
kafka.stop()
remove_state('kafka.started')
hookenv.status_set('waiting', 'Waiting for Zookeeper to become ready')
def stop_kafka_waiting_for_zookeeper_ready():
hookenv.status_set('maintenance', 'Zookeeper not ready, stopping Kafka')
kafka = Kafka()
kafka.stop()
remove_state('kafka.started')
hookenv.status_set('waiting', 'Waiting for Zookeeper to become ready')
