org.apache.flink.runtime.messages.checkpoint.AbstractCheckpointMessage Maven / Gradle / Ivy
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* 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,
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* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.flink.runtime.messages.checkpoint;
import org.apache.flink.api.common.JobID;
import org.apache.flink.runtime.executiongraph.ExecutionAttemptID;
/**
* The base class of all checkpoint messages.
*/
public abstract class AbstractCheckpointMessage implements java.io.Serializable {
private static final long serialVersionUID = 186780414819428178L;
/** The job to which this message belongs */
private final JobID job;
/** The task execution that is source/target of the checkpoint message */
private final ExecutionAttemptID taskExecutionId;
/** The ID of the checkpoint that this message coordinates */
private final long checkpointId;
protected AbstractCheckpointMessage(JobID job, ExecutionAttemptID taskExecutionId, long checkpointId) {
if (job == null || taskExecutionId == null) {
throw new NullPointerException();
}
this.job = job;
this.taskExecutionId = taskExecutionId;
this.checkpointId = checkpointId;
}
// --------------------------------------------------------------------------------------------
public JobID getJob() {
return job;
}
public ExecutionAttemptID getTaskExecutionId() {
return taskExecutionId;
}
public long getCheckpointId() {
return checkpointId;
}
// --------------------------------------------------------------------------------------------
@Override
public int hashCode() {
return job.hashCode() + taskExecutionId.hashCode() + (int) (checkpointId ^ (checkpointId >>> 32));
}
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
else if (o instanceof AbstractCheckpointMessage) {
AbstractCheckpointMessage that = (AbstractCheckpointMessage) o;
return this.job.equals(that.job) && this.taskExecutionId.equals(that.taskExecutionId) &&
this.checkpointId == that.checkpointId;
}
else {
return false;
}
}
@Override
public String toString() {
return "(" + checkpointId + ':' + job + '/' + taskExecutionId + ')';
}
}