def serve_client(client):
config = DistConfig()
port = config.port('zookeeper')
rest_port = config.port('zookeeper-rest')
host = None
network_interface = hookenv.config().get('network_interface')
if network_interface:
host = get_ip_for_interface(network_interface)
client.send_connection(port, rest_port, host)
def serve_client(client):
config = DistConfig()
port = config.port('zookeeper')
rest_port = config.port('zookeeper-rest')
host = None
network_interface = hookenv.config().get('network_interface')
if network_interface:
host = get_ip_for_interface(network_interface)
client.send_connection(port, rest_port, host)
def stop_spark():
hookenv.status_set('maintenance', 'Stopping Livy REST server')
dist = DistConfig(data=layer.options('livy'))
livy = Livy(dist)
livy.close_ports()
livy.stop()
remove_state('livy.started')
hookenv.status_set('maintenance', 'Stopping Apache Spark')
dist = DistConfig(data=layer.options('apache-spark'))
spark = Spark(dist)
spark.close_ports()
spark.stop()
remove_state('spark.started')
def reconfigure_kafka_zk_instances_leaving(zkdeparting, zkavailable):
try:
zk_units = zkavailable.get_zookeeper_units()
hookenv.status_set('maintenance', 'Updating Kafka with departing Zookeeper instances ')
kafka = Kafka(DistConfig())
kafka.configure_kafka(zk_units)
kafka.restart()
zkdeparting.dismiss_departing()
hookenv.status_set('active', 'Ready')
except:
hookenv.log("Relation with Zookeeper not established. Stopping Kafka.")
kafka = Kafka(DistConfig())
kafka.stop()
remove_state('kafka.started')
hookenv.status_set('blocked', 'Waiting for connection to Zookeeper')
def restart_zookeeper_if_config_changed():
"""Restart Zookeeper if zoo.cfg has changed.
As peers come and go, zoo.cfg will be updated. When that file changes,
restart the Zookeeper service and set an appropriate status message.
"""
# Possibly update bind address
network_interface = hookenv.config().get('network_interface')
if data_changed("zookeeper.bind_address", network_interface):
zk = Zookeeper()
zk.update_bind_address()
zoo_cfg = DistConfig().path('zookeeper_conf') / 'zoo.cfg'
if any_file_changed([zoo_cfg]):
hookenv.status_set('maintenance',
'Server config changed: restarting Zookeeper')
zk = Zookeeper()
zk.stop()
zk.start()
zk_count = int(zk.get_zk_count())
extra_status = ""
if zk_count < 3:
extra_status = ": less than 3 is suboptimal"
elif (zk_count % 2 == 0):
extra_status = ": even number is suboptimal"
hookenv.status_set('active',
'Ready (%d zk units%s)' % (zk_count, extra_status))
else:
# Make sure zookeeper is running in any case
zk = Zookeeper()
zk.start()
zk.open_ports()
def install_livy(hadoop): # pylint: disable=w0613
dist = DistConfig(data=layer.options('livy'))
livy = Livy(dist)
if livy.verify_resources():
hookenv.status_set('maintenance', 'Installing Livy REST server')
livy.install()
set_state('livy.installed')
def get_dist_config():
from jujubigdata.utils import DistConfig # no available until after bootstrap
if not getattr(get_dist_config, 'value', None):
zeppelin_reqs = ['vendor', 'packages', 'dirs', 'ports']
get_dist_config.value = DistConfig(filename='dist.yaml', required_keys=zeppelin_reqs)
return get_dist_config.value
def install_kafka(*args):
kafka = Kafka(DistConfig())
if kafka.verify_resources():
hookenv.status_set('maintenance', 'Installing Kafka')
kafka.install()
kafka.open_ports()
set_state('kafka.installed')
def start_spark(hadoop): # pylint: disable=w0613
hookenv.status_set('maintenance', 'Setting up Apache Spark')
dist = DistConfig(data=layer.options('apache-spark'))
spark = Spark(dist)
spark.configure()
spark.start()
spark.open_ports()
set_state('spark.started')
def get_dist_config(required_keys=None):
required_keys = required_keys or [
'vendor', 'hadoop_version', 'packages', 'groups', 'users', 'dirs',
'ports'
]
dist = DistConfig(filename='dist.yaml', required_keys=required_keys)
opts = layer.options('apache-bigtop-base')
for key in ('hadoop_version', ):
if key in opts:
dist.dist_config[key] = opts[key]
for key in ('packages', 'groups'):
if key in opts:
dist.dist_config[key] = list(
set(dist.dist_config[key]) | set(opts[key]))
for key in ('users', 'dirs', 'ports'):
if key in opts:
dist.dist_config[key].update(opts[key])
return dist
def install_spark(hadoop): # pylint: disable=w0613
dist = DistConfig(data=layer.options('apache-spark'))
spark = Spark(dist)
if spark.verify_resources():
hookenv.status_set('maintenance', 'Installing Apache Spark')
spark.install()
spark.setup_spark_config()
spark.install_demo()
set_state('spark.installed')
def start_livy(hadoop): # pylint: disable=w0613
hookenv.status_set('maintenance', 'Setting up Livy REST server')
dist = DistConfig(data=layer.options('livy'))
livy = Livy(dist)
mode = hookenv.config()['spark_execution_mode']
livy.configure(mode)
livy.start()
livy.open_ports()
set_state('livy.started')
hookenv.status_set('active', 'Ready')
def get_dist_config(required_keys=None):
required_keys = required_keys or [
'vendor', 'hadoop_version', 'packages',
'groups', 'users', 'dirs', 'ports']
dist = DistConfig(filename='dist.yaml',
required_keys=required_keys)
opts = layer.options('hadoop-base')
for key in ('hadoop_version',):
if key in opts:
dist.dist_config[key] = opts[key]
for key in ('packages', 'groups'):
if key in opts:
dist.dist_config[key] = list(
set(dist.dist_config[key]) | set(opts[key])
)
for key in ('users', 'dirs', 'ports'):
if key in opts:
dist.dist_config[key].update(opts[key])
return dist
def reconfigure_kafka_new_zk_instances(zkjoining, zkavailable):
try:
zk_units = zkavailable.get_zookeeper_units()
hookenv.status_set('maintenance', 'Updating Kafka with new Zookeeper instances')
kafka = Kafka(DistConfig())
kafka.configure_kafka(zk_units)
kafka.restart()
zkjoining.dismiss_joining()
hookenv.status_set('active', 'Ready')
except:
hookenv.log("Relation with Zookeeper not established")
def reconfigure_spark(hadoop): # pylint: disable=w0613
config = hookenv.config()
if not data_changed('configuration', config):
return
hookenv.status_set('maintenance',
'Configuring Apache Spark and Livy REST server')
dist = DistConfig(data=layer.options('apache-spark'))
spark = Spark(dist)
dist = DistConfig(data=layer.options('livy'))
livy = Livy(dist)
livy.stop()
spark.stop()
spark.configure()
mode = hookenv.config()['spark_execution_mode']
livy.configure(mode)
spark.start()
livy.start()
hookenv.status_set('active', 'Ready')
def configure_kafka(zkjoining, zkavailable):
try:
zk_units = zkavailable.get_zookeeper_units()
hookenv.status_set('maintenance', 'Setting up Kafka')
kafka = Kafka(DistConfig())
kafka.configure_kafka(zk_units)
kafka.start()
zkjoining.dismiss_joining()
hookenv.status_set('active', 'Ready')
set_state('kafka.started')
except:
hookenv.log("Relation with Zookeeper not established")
def serve_client(client, zookeeper):
kafka_port = DistConfig().port('kafka')
host = hookenv.config().get('hostname')
if not host:
# If we've attempted to bind to a spefic ip address, and we
# haven't set a hostname that will resolve to that ip, just
# send the ip address along.
network_interface = hookenv.config().get('network_interface')
if network_interface:
host = get_ip_for_interface(network_interface)
client.send_connection(kafka_port, host=host)
client.send_zookeepers(zookeeper.zookeepers())
hookenv.log('Sent Kafka configuration to client')
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 serve_client(client, zookeeper):
kafka_port = DistConfig().port('kafka')
client.send_port(kafka_port)
client.send_zookeepers(zookeeper.zookeepers())
hookenv.log('Sent Kafka configuration to client')
def __init__(self, dist_config=None):
self._dist_config = dist_config or DistConfig(
data=layer.options('apache-bigtop-base'))
self._roles = ['zookeeper-server', 'zookeeper-client']
self._hosts = {}
def get_dist_config():
return DistConfig(data=layer.options('hadoop-client'))
def get_dist_config(keys):
from jujubigdata.utils import DistConfig
if not getattr(get_dist_config, 'value', None):
get_dist_config.value = DistConfig(filename='dist.yaml', required_keys=keys)
return get_dist_config.value
def client_present(client):
dist = DistConfig(data=layer.options("livy"))
rest_port = dist.port("livy")
client.send_rest_port(rest_port)
client.set_spark_started()
def client_present(client):
dist = DistConfig(data=layer.options('livy'))
rest_port = dist.port('livy')
client.send_rest_port(rest_port)
client.set_spark_started()
def serve_client(kafka_client, zookeeper):
kafka_port = DistConfig().port('kafka')
kafka_client.send_port(kafka_port)
kafka_client.send_zookeepers(zookeeper.get_zookeeper_units())
hookenv.log('Sending configuration to client')
def serve_client(client):
config = DistConfig()
port = config.port('zookeeper')
rest_port = config.port('zookeeper-rest')
client.send_port(port, rest_port)
