org.apache.flink.runtime.akka.DefaultQuarantineHandler Maven / Gradle / Ivy
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* to you under the Apache License, Version 2.0 (the
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*
* http://www.apache.org/licenses/LICENSE-2.0
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*/
package org.apache.flink.runtime.akka;
import akka.actor.ActorSystem;
import akka.actor.Address;
import org.apache.flink.api.common.time.Time;
import org.apache.flink.util.Preconditions;
import org.slf4j.Logger;
import scala.concurrent.duration.FiniteDuration;
/**
* Default quarantine handler which logs the quarantining events, then shuts down the given
* actor system by sending Kill to all actors and then shutting the JVM down with the given
* exit code.
*/
public class DefaultQuarantineHandler implements QuarantineHandler {
private final FiniteDuration timeout;
private final int exitCode;
private final Logger log;
public DefaultQuarantineHandler(Time timeout, int exitCode, Logger log) {
Preconditions.checkNotNull(timeout);
this.timeout = new FiniteDuration(timeout.getSize(), timeout.getUnit());
this.exitCode = exitCode;
this.log = Preconditions.checkNotNull(log);
}
@Override
public void wasQuarantinedBy(String remoteSystem, ActorSystem actorSystem) {
Address actorSystemAddress = AkkaUtils.getAddress(actorSystem);
log.error("The actor system {} has been quarantined by {}. Shutting the actor system " +
"down to be able to reestablish a connection!", actorSystemAddress, remoteSystem);
shutdownActorSystem(actorSystem);
}
@Override
public void hasQuarantined(String remoteSystem, ActorSystem actorSystem) {
Address actorSystemAddress = AkkaUtils.getAddress(actorSystem);
log.error("The actor system {} has quarantined the remote actor system {}. Shutting " +
"the actor system down to be able to reestablish a connection!", actorSystemAddress, remoteSystem);
shutdownActorSystem(actorSystem);
}
private void shutdownActorSystem(ActorSystem actorSystem) {
// shut the actor system down
actorSystem.shutdown();
try {
// give it some time to complete the shutdown
actorSystem.awaitTermination(timeout);
} finally {
// now let's crash the JVM
System.exit(exitCode);
}
}
}