samza-api/src/main/java/org/apache/samza/system/EndOfStreamMessage.java

/*
 * 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.system;

import org.codehaus.jackson.annotate.JsonCreator;
import org.codehaus.jackson.annotate.JsonProperty;

/**
 *  The EndOfStreamMessage is a control message that is sent out to next stage
 *  once the task has consumed to the end of a bounded stream.
 */
public class EndOfStreamMessage extends ControlMessage {
  public EndOfStreamMessage() {
    this(null);
  }

  @JsonCreator
  public EndOfStreamMessage(@JsonProperty("task-name") String taskName) {
    super(taskName);
  }
}