org.apache.flink.runtime.webmonitor.retriever.impl.AkkaJobManagerRetriever Maven / Gradle / Ivy
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* distributed with this work for additional information
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* 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
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package org.apache.flink.runtime.webmonitor.retriever.impl;
import org.apache.flink.api.common.time.Time;
import org.apache.flink.api.java.tuple.Tuple2;
import org.apache.flink.runtime.akka.AkkaJobManagerGateway;
import org.apache.flink.runtime.akka.AkkaUtils;
import org.apache.flink.runtime.concurrent.FutureUtils;
import org.apache.flink.runtime.concurrent.ScheduledExecutor;
import org.apache.flink.runtime.concurrent.akka.ActorSystemScheduledExecutorAdapter;
import org.apache.flink.runtime.instance.ActorGateway;
import org.apache.flink.runtime.instance.AkkaActorGateway;
import org.apache.flink.runtime.jobmaster.JobManagerGateway;
import org.apache.flink.runtime.webmonitor.retriever.LeaderGatewayRetriever;
import org.apache.flink.util.Preconditions;
import akka.actor.ActorRef;
import akka.actor.ActorSystem;
import java.util.UUID;
import java.util.concurrent.CompletableFuture;
/**
* {@link LeaderGatewayRetriever} implementation for Akka based JobManagers.
*/
public class AkkaJobManagerRetriever extends LeaderGatewayRetriever {
private final ActorSystem actorSystem;
private final Time timeout;
private final int retries;
private final Time retryDelay;
private final ScheduledExecutor scheduledExecutor;
public AkkaJobManagerRetriever(
ActorSystem actorSystem,
Time timeout,
int retries,
Time retryDelay) {
this.actorSystem = Preconditions.checkNotNull(actorSystem);
this.timeout = Preconditions.checkNotNull(timeout);
Preconditions.checkArgument(retries >= 0, "The number of retries must be >= 0.");
this.retries = retries;
this.retryDelay = Preconditions.checkNotNull(retryDelay);
this.scheduledExecutor = new ActorSystemScheduledExecutorAdapter(actorSystem);
}
@Override
protected CompletableFuture createGateway(CompletableFuture> leaderFuture) {
return FutureUtils.retryWithDelay(
() ->
leaderFuture.thenCompose(
(Tuple2 addressLeaderId) ->
FutureUtils.toJava(
AkkaUtils.getActorRefFuture(
addressLeaderId.f0,
actorSystem,
FutureUtils.toFiniteDuration(timeout)))
.thenApply(
(ActorRef jobManagerRef) -> {
ActorGateway leaderGateway = new AkkaActorGateway(
jobManagerRef,
addressLeaderId.f1);
return new AkkaJobManagerGateway(leaderGateway);
}
)),
retries,
retryDelay,
scheduledExecutor);
}
}