| /* |
| * 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 org.apache.samza.operators.functions; |
| |
| import java.io.Serializable; |
| import org.apache.samza.annotation.InterfaceStability; |
| import org.apache.samza.task.MessageCollector; |
| import org.apache.samza.task.TaskCoordinator; |
| |
| |
| /** |
| * Allows sending a message to an output system. |
| * |
| * @param <M> type of the input message |
| */ |
| @InterfaceStability.Unstable |
| @FunctionalInterface |
| public interface SinkFunction<M> extends InitableFunction, ClosableFunction, Serializable { |
| |
| /** |
| * Allows sending the provided message to an output {@link org.apache.samza.system.SystemStream} using |
| * the provided {@link MessageCollector}. Also provides access to the {@link TaskCoordinator} to request commits |
| * or shut the container down. |
| * |
| * @param message the input message to be sent to an output {@link org.apache.samza.system.SystemStream} |
| * @param messageCollector the {@link MessageCollector} to send the message |
| * @param taskCoordinator the {@link TaskCoordinator} to request commits or shutdown |
| */ |
| void apply(M message, MessageCollector messageCollector, TaskCoordinator taskCoordinator); |
| |
| } |