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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.container.handler;
import com.yahoo.component.annotation.Inject;
import com.yahoo.component.AbstractComponent;
import com.yahoo.container.di.componentgraph.Provider;
import com.yahoo.container.handler.threadpool.ContainerThreadPool;
import com.yahoo.container.handler.threadpool.ContainerThreadpoolConfig;
import com.yahoo.container.handler.threadpool.ContainerThreadpoolImpl;
import com.yahoo.container.protect.ProcessTerminator;
import com.yahoo.jdisc.Metric;
import java.util.concurrent.Executor;
/**
* A configurable thread pool provider for the jdisc default threadpool.
* This provides the worker threads used for normal request processing.
* Request an {@link Executor} injected in your component constructor if you want to use it.
*
* @author Steinar Knutsen
* @author baldersheim
* @author bratseth
*/
public class ThreadPoolProvider extends AbstractComponent implements Provider<Executor> {
private final ContainerThreadPool threadpool;
@Inject
public ThreadPoolProvider(ThreadpoolConfig config, Metric metric) {
this.threadpool = new ContainerThreadpoolImpl(translateConfig(config), metric);
}
public ThreadPoolProvider(ThreadpoolConfig config, Metric metric, ProcessTerminator processTerminator) {
this.threadpool = new ContainerThreadpoolImpl(translateConfig(config), metric, processTerminator);
}
/**
* The underlying {@link ContainerThreadPool} uses a different config definition ({@link ContainerThreadpoolConfig})
* as {@link ThreadpoolConfig} is currently public api.
*/
private static ContainerThreadpoolConfig translateConfig(ThreadpoolConfig config) {
return new ContainerThreadpoolConfig(
new ContainerThreadpoolConfig.Builder()
.maxThreads(config.maxthreads())
.minThreads(config.corePoolSize())
.name(config.name())
.queueSize(config.queueSize())
.keepAliveTime(config.keepAliveTime())
.maxThreadExecutionTimeSeconds(config.maxThreadExecutionTimeSeconds()));
}
/**
* Get the Executor provided by this class. This Executor will by default
* also be used for search queries and processing requests.
*
* @return a possibly shared executor
*/
@Override
public Executor get() { return threadpool.executor(); }
/**
* Shut down the thread pool, give a grace period of 1 second before forcibly
* shutting down all worker threads.
*/
@Override
public void deconstruct() {
threadpool.close();
}
}
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