64 lines
2.1 KiB
Python
64 lines
2.1 KiB
Python
# Copyright (c) 2015 Hewlett-Packard Development Company, L.P.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import kafka.client
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import kafka.producer
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import logging
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import monascastatsd
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import time
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from monasca_notification.processors.base import BaseProcessor
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log = logging.getLogger(__name__)
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class KafkaProducer(BaseProcessor):
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"""Adds messages to a kafka topic
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"""
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def __init__(self, url):
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"""Init
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url, group - kafka connection details
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"""
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self._statsd = monascastatsd.Client(name='monasca', dimensions=BaseProcessor.dimensions)
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self._kafka = kafka.client.KafkaClient(url)
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self._producer = kafka.producer.KeyedProducer(
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self._kafka,
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async=False,
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req_acks=kafka.producer.KeyedProducer.ACK_AFTER_LOCAL_WRITE,
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ack_timeout=2000)
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def publish(self, topic, messages):
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"""Takes messages and puts them on the supplied kafka topic
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"""
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published_to_kafka = self._statsd.get_counter(name='published_to_kafka')
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for message in messages:
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key = time.time() * 1000
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try:
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responses = self._producer.send(topic, key, message.to_json())
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except Exception:
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log.exception("error publishing message to kafka")
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continue
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published_to_kafka += 1
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log.debug('Published to topic {}, message {}'.format(topic, message.to_json()))
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for resp in responses:
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if resp.error != 0:
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log.error('Error publishing to {} topic, '
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'error message {}'.format(self.topic, resp.error))
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