monasca-api/monasca_api/common/messaging/kafka_publisher.py

63 lines
2.2 KiB
Python

# Copyright 2014,2017 Hewlett-Packard
#
# Licensed 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.
from oslo_config import cfg
from oslo_log import log
from monasca_api.common.messaging import exceptions
from monasca_api.common.messaging import publisher
import monasca_common.kafka.producer as kafka_producer
import monasca_common.kafka_lib.common as kafka_common
LOG = log.getLogger(__name__)
class KafkaPublisher(publisher.Publisher):
def __init__(self, topic):
if not cfg.CONF.kafka.uri:
raise Exception('Kafka is not configured correctly! '
'Use configuration file to specify Kafka '
'uri, for example: '
'uri=192.168.1.191:9092')
self.uri = cfg.CONF.kafka.uri
self.topic = topic
self.group = cfg.CONF.kafka.group
self.wait_time = cfg.CONF.kafka.wait_time
self.async = cfg.CONF.kafka.async
self.ack_time = cfg.CONF.kafka.ack_time
self.max_retry = cfg.CONF.kafka.max_retry
self.auto_commit = cfg.CONF.kafka.auto_commit
self.compact = cfg.CONF.kafka.compact
self.partitions = cfg.CONF.kafka.partitions
self.drop_data = cfg.CONF.kafka.drop_data
self._producer = kafka_producer.KafkaProducer(self.uri)
def close(self):
pass
def send_message(self, message):
try:
self._producer.publish(self.topic, message)
except (kafka_common.KafkaUnavailableError,
kafka_common.LeaderNotAvailableError):
LOG.exception('Error occurred while posting data to Kafka.')
raise exceptions.MessageQueueException()
except Exception:
LOG.exception('Unknown error.')
raise exceptions.MessageQueueException()