monasca-persister/monasca_persister/kafka/confluent_kafka_persister.py

36 lines
1.4 KiB
Python

# 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 monasca_common.kafka import client_factory
from monasca_persister.repositories import persister
from monasca_persister.repositories import singleton
class ConfluentKafkaPersister(persister.Persister, metaclass=singleton.Singleton):
def __init__(self, kafka_conf, repository, client_id=""):
super(ConfluentKafkaPersister, self).__init__(kafka_conf, repository)
self._consumer = client_factory.get_kafka_consumer(
kafka_url=kafka_conf.uri,
kafka_consumer_group=kafka_conf.group_id,
kafka_topic=kafka_conf.topic,
client_id=client_id,
repartition_callback=ConfluentKafkaPersister.flush,
commit_callback=self._flush,
max_commit_interval=kafka_conf.max_wait_time_seconds
)
@staticmethod
def flush(kafka_consumer, partitions):
p = ConfluentKafkaPersister()
p._flush()