| /* |
| * 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 WatermarkMessage is a control message that is sent out to next stage |
| * with a watermark timestamp and the task that produces the watermark. |
| */ |
| public class WatermarkMessage extends ControlMessage { |
| private final long timestamp; |
| |
| public WatermarkMessage(long watermark) { |
| this(watermark, null); |
| } |
| |
| @JsonCreator |
| public WatermarkMessage(@JsonProperty("timestamp") long timestamp, |
| @JsonProperty("task-name") String taskName) { |
| super(taskName); |
| this.timestamp = timestamp; |
| } |
| |
| public long getTimestamp() { |
| return timestamp; |
| } |
| |
| @Override |
| public int hashCode() { |
| final int prime = 31; |
| int result = super.hashCode(); |
| result = prime * result + Long.hashCode(timestamp); |
| return result; |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (this == obj) |
| return true; |
| if (obj == null) |
| return false; |
| if (getClass() != obj.getClass()) |
| return false; |
| if (!super.equals(obj)) |
| return false; |
| |
| final WatermarkMessage other = (WatermarkMessage) obj; |
| if (timestamp != other.timestamp) { |
| return false; |
| } |
| return true; |
| } |
| } |