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#!/usr/bin/env python3
# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements. See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
# the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import kafkautils
import subprocess
import sys
sys.path.append('lib') # Add our helpers to our path.
from charmhelpers.core import hookenv, host # noqa: E402
from charms.layer.apache_bigtop_base import get_layer_opts # noqa: E402
from charms.reactive import is_state # noqa: E402
from jujubigdata import utils # noqa: E402
if not is_state('kafka.started'):
kafkautils.fail('Kafka service not yet ready')
# Grab the business
topic_name = hookenv.action_get('topic')
topic_partition = hookenv.action_get('partition')
# Read the topic if kafka is running
if host.service_available('kafka-server') and host.service_running('kafka-server'):
host = subprocess.check_output(['hostname', '-s']).decode('utf8').strip()
port = get_layer_opts().port('kafka')
zookeepers = kafkautils.get_zookeepers()
try:
output = utils.run_as('kafka', '/usr/lib/kafka/bin/kafka-simple-consumer-shell.sh',
'--broker-list', '{}:{}'.format(host, port),
'--topic', topic_name,
'--partition', topic_partition,
'--no-wait-at-logend',
capture_output=True)
except subprocess.CalledProcessError as e:
kafkautils.fail('Kafka command failed: {}'.format(e.output))
else:
hookenv.action_set({'raw': output})
hookenv.action_set({'outcome': 'success'})
else:
kafkautils.fail('kafka-server service is not running')
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