cb2ec23cee
To let other OpenStack projects move forward with new versions of kafka-python we're forking kafka-python and embedding it in monasca-common. This allows us to migrate to the new async interfaces provided by more recent kafka clients over time and not block other projects. Requiring pykafka to allow us to have ~4x more throughput once we write to their async interfaces. Change-Id: Ifb6ab67ce1335a5ec4ed7dd8b0027dc9d46a6dda Depends-On: I26f9c588f2818059ab6ba24f9fad8e213798a39c
57 lines
1.7 KiB
Python
57 lines
1.7 KiB
Python
# Copyright (c) 2015 Hewlett-Packard Development Company, L.P.
|
|
#
|
|
# 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.
|
|
|
|
import logging
|
|
import time
|
|
|
|
import monasca_common.kafka_lib.client as kafka_client
|
|
import monasca_common.kafka_lib.producer as kafka_producer
|
|
|
|
log = logging.getLogger(__name__)
|
|
|
|
|
|
class KafkaProducer(object):
|
|
"""Adds messages to a kafka topic
|
|
|
|
"""
|
|
|
|
def __init__(self, url):
|
|
"""Init
|
|
|
|
url - kafka connection details
|
|
"""
|
|
self._kafka = kafka_client.KafkaClient(url)
|
|
self._producer = kafka_producer.KeyedProducer(
|
|
self._kafka,
|
|
async=False,
|
|
req_acks=kafka_producer.KeyedProducer.ACK_AFTER_LOCAL_WRITE,
|
|
ack_timeout=2000)
|
|
|
|
def publish(self, topic, messages, key=None):
|
|
"""Takes messages and puts them on the supplied kafka topic
|
|
|
|
"""
|
|
|
|
if not isinstance(messages, list):
|
|
messages = [messages]
|
|
|
|
try:
|
|
if key is None:
|
|
key = int(time.time() * 1000)
|
|
self._producer.send_messages(topic, str(key), *messages)
|
|
except Exception:
|
|
log.exception('Error publishing to {} topic.'.format(topic))
|
|
raise
|