mik-laj commented on a change in pull request #12388: URL: https://github.com/apache/airflow/pull/12388#discussion_r525542613
########## File path: airflow/providers/apache/kafka/hooks/kafka_producer.py ########## @@ -0,0 +1,88 @@ +# +# 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. + +from kafka import KafkaProducer + +from airflow.hooks.base_hook import BaseHook + + +class KafkaProducerHook(BaseHook): + """KafkaProducerHook Class.""" + + DEFAULT_HOST = 'localhost' + DEFAULT_PORT = 9092 + + def __init__(self, conn_id, topic): + super().__init__(None) + self.conn_id = conn_id + self._conn = None + self.server = None + self.consumer = None + self.producer = None + self.topic = topic + + def get_conn(self) -> KafkaProducer: + """ + Returns a Kafka Producer + + :return: + A Kafka Producer object. + """ + if not self._conn: + _conn = self.get_connection(self.conn_id) + service_options = _conn.extra_dejson + host = _conn.host or self.DEFAULT_HOST + port = _conn.port or self.DEFAULT_PORT + + self.server = f"""{host}:{port}""" + self.consumer = KafkaProducer(bootstrap_servers=self.server, **service_options) + return self.producer + + def send_message(self, topic, value=None, key=None, partition=None, timestamp_ms=None): + """ + Sends a message on the specified topic and partition. Keyed messages will be sent in order. + + :param topic: + :param value: + :param key: + :param partition: + :param timestamp_ms: + :return: + """ + producer = self.get_conn() + try: + future_record_metadata = producer.send( + topic, value=value, key=key, partition=partition, timestamp_ms=timestamp_ms + ) + finally: + producer.close() + return future_record_metadata + + def __repr__(self): + """ + A pretty version of the connection string. + + :return: + A pretty version of the connection string. + """ + connected = self.producer is not None + return '<KafkaProducerHook ' 'connected?=%s server=%s topic=%s>' % ( Review comment: ```suggestion return '<KafkaProducerHook connected?=%s server=%s topic=%s>' % ( ``` ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected]
