org.apache.flink.runtime.checkpoint.CheckpointCoordinatorDeActivator Maven / Gradle / Ivy
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* Licensed to the Apache Software Foundation (ASF) under one
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* 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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*/
package org.apache.flink.runtime.checkpoint;
import org.apache.flink.api.common.JobID;
import org.apache.flink.runtime.executiongraph.JobStatusListener;
import org.apache.flink.runtime.jobgraph.JobStatus;
import static org.apache.flink.util.Preconditions.checkNotNull;
/**
* This actor listens to changes in the JobStatus and activates or deactivates the periodic
* checkpoint scheduler.
*/
public class CheckpointCoordinatorDeActivator implements JobStatusListener {
private final CheckpointCoordinator coordinator;
public CheckpointCoordinatorDeActivator(CheckpointCoordinator coordinator) {
this.coordinator = checkNotNull(coordinator);
}
@Override
public void jobStatusChanges(JobID jobId, JobStatus newJobStatus, long timestamp, Throwable error) {
if (newJobStatus == JobStatus.RUNNING) {
// start the checkpoint scheduler
coordinator.startCheckpointScheduler();
} else {
// anything else should stop the trigger for now
coordinator.stopCheckpointScheduler();
}
}
}