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// Copyright Verizon Media. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.model.container;
import com.yahoo.container.bundle.BundleInstantiationSpecification;
import com.yahoo.container.handler.threadpool.ContainerThreadPool;
import com.yahoo.container.handler.threadpool.ContainerThreadpoolConfig;
import com.yahoo.container.handler.threadpool.DefaultContainerThreadpool;
import com.yahoo.osgi.provider.model.ComponentModel;
import com.yahoo.text.XML;
import com.yahoo.vespa.model.container.component.SimpleComponent;
import org.w3c.dom.Element;
import java.util.Optional;
/**
* Component definition for a {@link java.util.concurrent.Executor} using {@link ContainerThreadPool}.
*
* @author bjorncs
*/
public class ContainerThreadpool extends SimpleComponent implements ContainerThreadpoolConfig.Producer {
private final String name;
private final UserOptions userOptions;
public ContainerThreadpool(String name, UserOptions userOptions) {
super(new ComponentModel(
BundleInstantiationSpecification.getFromStrings(
"threadpool@" + name,
DefaultContainerThreadpool.class.getName(),
null)));
this.name = name;
this.userOptions = userOptions;
}
@Override
public void getConfig(ContainerThreadpoolConfig.Builder builder) {
builder.name(this.name);
if (userOptions != null) {
builder.maxThreads(userOptions.maxThreads);
builder.minThreads(userOptions.minThreads);
builder.queueSize(userOptions.queueSize);
}
}
protected Optional<UserOptions> userOptions() { return Optional.ofNullable(userOptions); }
protected boolean hasUserOptions() { return userOptions().isPresent(); }
public static class UserOptions {
private final int maxThreads;
private final int minThreads;
private final int queueSize;
private UserOptions(int maxThreads, int minThreads, int queueSize) {
this.maxThreads = maxThreads;
this.minThreads = minThreads;
this.queueSize = queueSize;
}
public static Optional<UserOptions> fromXml(Element xml) {
Element element = XML.getChild(xml, "threadpool");
if (element == null) return Optional.empty();
return Optional.of(new UserOptions(
intOption(element, "max-threads"),
intOption(element, "min-threads"),
intOption(element, "queue-size")));
}
private static int intOption(Element element, String name) {
return Integer.parseInt(XML.getChild(element, name).getTextContent());
}
}
}
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