org.apache.flink.runtime.webmonitor.retriever.impl.AkkaQueryServiceRetriever Maven / Gradle / Ivy
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* to you under the Apache License, Version 2.0 (the
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* 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.runtime.concurrent.FutureUtils;
import org.apache.flink.runtime.metrics.dump.MetricQueryService;
import org.apache.flink.runtime.webmonitor.retriever.MetricQueryServiceGateway;
import org.apache.flink.runtime.webmonitor.retriever.MetricQueryServiceRetriever;
import org.apache.flink.util.Preconditions;
import akka.actor.ActorSelection;
import akka.actor.ActorSystem;
import java.util.concurrent.CompletableFuture;
/**
* {@link MetricQueryServiceRetriever} implementation for Akka based {@link MetricQueryService}.
*/
public class AkkaQueryServiceRetriever implements MetricQueryServiceRetriever {
private final ActorSystem actorSystem;
private final Time lookupTimeout;
public AkkaQueryServiceRetriever(ActorSystem actorSystem, Time lookupTimeout) {
this.actorSystem = Preconditions.checkNotNull(actorSystem);
this.lookupTimeout = Preconditions.checkNotNull(lookupTimeout);
}
@Override
public CompletableFuture retrieveService(String queryServicePath) {
ActorSelection selection = actorSystem.actorSelection(queryServicePath);
return FutureUtils.toJava(selection.resolveOne(FutureUtils.toFiniteDuration(lookupTimeout))).thenApply(AkkaQueryServiceGateway::new);
}
}