blob: ba41724f938e0378c6196001d4fe7f8b26efe719 [file] [log] [blame]
/*
* 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;
}
}