io.micrometer.core.instrument.binder.jetty.JettyServerThreadPoolMetrics Maven / Gradle / Ivy
/*
* Copyright 2019 VMware, Inc.
*
* Licensed 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
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package io.micrometer.core.instrument.binder.jetty;
import io.micrometer.core.instrument.Gauge;
import io.micrometer.core.instrument.MeterRegistry;
import io.micrometer.core.instrument.Tag;
import io.micrometer.core.instrument.binder.MeterBinder;
import org.eclipse.jetty.util.thread.QueuedThreadPool;
import org.eclipse.jetty.util.thread.ThreadPool;
import org.eclipse.jetty.util.thread.ThreadPool.SizedThreadPool;
/**
* {@link MeterBinder} for Jetty {@link ThreadPool}.
*
* Pass the {@link ThreadPool} used with the Jetty {@link org.eclipse.jetty.server.Server
* Server}. For example:
* {@code
* QueuedThreadPool threadPool = new QueuedThreadPool();
* Server server = new Server(threadPool);
* new JettyServerThreadPoolMetrics(threadPool, tags).bindTo(registry);
* }
*
*
* @author Manabu Matsuzaki
* @author Andy Wilkinson
* @author Johnny Lim
* @since 1.1.0
* @see InstrumentedQueuedThreadPool
*/
public class JettyServerThreadPoolMetrics implements MeterBinder {
private final ThreadPool threadPool;
private final Iterable tags;
public JettyServerThreadPoolMetrics(ThreadPool threadPool, Iterable tags) {
this.threadPool = threadPool;
this.tags = tags;
}
@Override
public void bindTo(MeterRegistry registry) {
if (threadPool instanceof SizedThreadPool) {
SizedThreadPool sizedThreadPool = (SizedThreadPool) threadPool;
Gauge.builder("jetty.threads.config.min", sizedThreadPool, SizedThreadPool::getMinThreads)
.description("The minimum number of threads in the pool")
.tags(tags)
.register(registry);
Gauge.builder("jetty.threads.config.max", sizedThreadPool, SizedThreadPool::getMaxThreads)
.description("The maximum number of threads in the pool")
.tags(tags)
.register(registry);
if (threadPool instanceof QueuedThreadPool) {
QueuedThreadPool queuedThreadPool = (QueuedThreadPool) threadPool;
Gauge.builder("jetty.threads.busy", queuedThreadPool, QueuedThreadPool::getBusyThreads)
.description("The number of busy threads in the pool")
.tags(tags)
.register(registry);
Gauge.builder("jetty.threads.jobs", queuedThreadPool, QueuedThreadPool::getQueueSize)
.description("Number of jobs queued waiting for a thread")
.tags(tags)
.register(registry);
}
}
Gauge.builder("jetty.threads.current", threadPool, ThreadPool::getThreads)
.description("The total number of threads in the pool")
.tags(tags)
.register(registry);
Gauge.builder("jetty.threads.idle", threadPool, ThreadPool::getIdleThreads)
.description("The number of idle threads in the pool")
.tags(tags)
.register(registry);
}
}