| /** |
| * 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. |
| */ |
| package kafka.producer.async |
| |
| import java.util.Properties |
| import kafka.producer.SyncProducer |
| import kafka.serializer.Encoder |
| |
| /** |
| * Handler that dispatches the batched data from the queue of the |
| * asynchronous producer. |
| */ |
| trait EventHandler[T] { |
| /** |
| * Initializes the event handler using a Properties object |
| * @param props the properties used to initialize the event handler |
| */ |
| def init(props: Properties) {} |
| |
| /** |
| * Callback to dispatch the batched data and send it to a Kafka server |
| * @param events the data sent to the producer |
| * @param producer the low-level producer used to send the data |
| */ |
| def handle(events: Seq[QueueItem[T]], producer: SyncProducer, encoder: Encoder[T]) |
| |
| /** |
| * Cleans up and shuts down the event handler |
| */ |
| def close {} |
| } |