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io.dropwizard.metrics.jetty10.InstrumentedQueuedThreadPool Maven / Gradle / Ivy
package io.dropwizard.metrics.jetty10;
import com.codahale.metrics.MetricRegistry;
import com.codahale.metrics.RatioGauge;
import org.eclipse.jetty.util.annotation.Name;
import org.eclipse.jetty.util.thread.QueuedThreadPool;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.ThreadFactory;
import static com.codahale.metrics.MetricRegistry.name;
public class InstrumentedQueuedThreadPool extends QueuedThreadPool {
private static final String NAME_UTILIZATION = "utilization";
private static final String NAME_UTILIZATION_MAX = "utilization-max";
private static final String NAME_SIZE = "size";
private static final String NAME_JOBS = "jobs";
private static final String NAME_JOBS_QUEUE_UTILIZATION = "jobs-queue-utilization";
private final MetricRegistry metricRegistry;
private String prefix;
public InstrumentedQueuedThreadPool(@Name("registry") MetricRegistry registry) {
this(registry, 200);
}
public InstrumentedQueuedThreadPool(@Name("registry") MetricRegistry registry,
@Name("maxThreads") int maxThreads) {
this(registry, maxThreads, 8);
}
public InstrumentedQueuedThreadPool(@Name("registry") MetricRegistry registry,
@Name("maxThreads") int maxThreads,
@Name("minThreads") int minThreads) {
this(registry, maxThreads, minThreads, 60000);
}
public InstrumentedQueuedThreadPool(@Name("registry") MetricRegistry registry,
@Name("maxThreads") int maxThreads,
@Name("minThreads") int minThreads,
@Name("queue") BlockingQueue queue) {
this(registry, maxThreads, minThreads, 60000, queue);
}
public InstrumentedQueuedThreadPool(@Name("registry") MetricRegistry registry,
@Name("maxThreads") int maxThreads,
@Name("minThreads") int minThreads,
@Name("idleTimeout") int idleTimeout) {
this(registry, maxThreads, minThreads, idleTimeout, null);
}
public InstrumentedQueuedThreadPool(@Name("registry") MetricRegistry registry,
@Name("maxThreads") int maxThreads,
@Name("minThreads") int minThreads,
@Name("idleTimeout") int idleTimeout,
@Name("queue") BlockingQueue queue) {
this(registry, maxThreads, minThreads, idleTimeout, queue, (ThreadGroup) null);
}
public InstrumentedQueuedThreadPool(@Name("registry") MetricRegistry registry,
@Name("maxThreads") int maxThreads,
@Name("minThreads") int minThreads,
@Name("idleTimeout") int idleTimeout,
@Name("queue") BlockingQueue queue,
@Name("prefix") String prefix) {
this(registry, maxThreads, minThreads, idleTimeout, -1, queue, null, null, prefix);
}
public InstrumentedQueuedThreadPool(@Name("registry") MetricRegistry registry,
@Name("maxThreads") int maxThreads,
@Name("minThreads") int minThreads,
@Name("idleTimeout") int idleTimeout,
@Name("queue") BlockingQueue queue,
@Name("threadFactory") ThreadFactory threadFactory) {
this(registry, maxThreads, minThreads, idleTimeout, -1, queue, null, threadFactory);
}
public InstrumentedQueuedThreadPool(@Name("registry") MetricRegistry registry,
@Name("maxThreads") int maxThreads,
@Name("minThreads") int minThreads,
@Name("idleTimeout") int idleTimeout,
@Name("queue") BlockingQueue queue,
@Name("threadGroup") ThreadGroup threadGroup) {
this(registry, maxThreads, minThreads, idleTimeout, -1, queue, threadGroup);
}
public InstrumentedQueuedThreadPool(@Name("registry") MetricRegistry registry,
@Name("maxThreads") int maxThreads,
@Name("minThreads") int minThreads,
@Name("idleTimeout") int idleTimeout,
@Name("reservedThreads") int reservedThreads,
@Name("queue") BlockingQueue queue,
@Name("threadGroup") ThreadGroup threadGroup) {
this(registry, maxThreads, minThreads, idleTimeout, reservedThreads, queue, threadGroup, null);
}
public InstrumentedQueuedThreadPool(@Name("registry") MetricRegistry registry,
@Name("maxThreads") int maxThreads,
@Name("minThreads") int minThreads,
@Name("idleTimeout") int idleTimeout,
@Name("reservedThreads") int reservedThreads,
@Name("queue") BlockingQueue queue,
@Name("threadGroup") ThreadGroup threadGroup,
@Name("threadFactory") ThreadFactory threadFactory) {
this(registry, maxThreads, minThreads, idleTimeout, reservedThreads, queue, threadGroup, threadFactory, null);
}
public InstrumentedQueuedThreadPool(@Name("registry") MetricRegistry registry,
@Name("maxThreads") int maxThreads,
@Name("minThreads") int minThreads,
@Name("idleTimeout") int idleTimeout,
@Name("reservedThreads") int reservedThreads,
@Name("queue") BlockingQueue queue,
@Name("threadGroup") ThreadGroup threadGroup,
@Name("threadFactory") ThreadFactory threadFactory,
@Name("prefix") String prefix) {
super(maxThreads, minThreads, idleTimeout, reservedThreads, queue, threadGroup, threadFactory);
this.metricRegistry = registry;
this.prefix = prefix;
}
public String getPrefix() {
return prefix;
}
public void setPrefix(String prefix) {
this.prefix = prefix;
}
@Override
protected void doStart() throws Exception {
super.doStart();
final String prefix = getMetricPrefix();
metricRegistry.register(name(prefix, NAME_UTILIZATION), new RatioGauge() {
@Override
protected Ratio getRatio() {
return Ratio.of(getThreads() - getIdleThreads(), getThreads());
}
});
metricRegistry.register(name(prefix, NAME_UTILIZATION_MAX), new RatioGauge() {
@Override
protected Ratio getRatio() {
return Ratio.of(getThreads() - getIdleThreads(), getMaxThreads());
}
});
// This assumes the QueuedThreadPool is using a BlockingArrayQueue or
// ArrayBlockingQueue for its queue, and is therefore a constant-time operation.
metricRegistry.registerGauge(name(prefix, NAME_SIZE), this::getThreads);
metricRegistry.registerGauge(name(prefix, NAME_JOBS), () -> getQueue().size());
metricRegistry.register(name(prefix, NAME_JOBS_QUEUE_UTILIZATION), new RatioGauge() {
@Override
protected Ratio getRatio() {
BlockingQueue queue = getQueue();
return Ratio.of(queue.size(), queue.size() + queue.remainingCapacity());
}
});
}
@Override
protected void doStop() throws Exception {
final String prefix = getMetricPrefix();
metricRegistry.remove(name(prefix, NAME_UTILIZATION));
metricRegistry.remove(name(prefix, NAME_UTILIZATION_MAX));
metricRegistry.remove(name(prefix, NAME_SIZE));
metricRegistry.remove(name(prefix, NAME_JOBS));
metricRegistry.remove(name(prefix, NAME_JOBS_QUEUE_UTILIZATION));
super.doStop();
}
private String getMetricPrefix() {
return this.prefix == null ? name(QueuedThreadPool.class, getName()) : name(this.prefix, getName());
}
}
