com.hazelcast.internal.metrics.metricsets.ClassLoadingMetricSet Maven / Gradle / Ivy
/*
* Copyright (c) 2008-2015, Hazelcast, Inc. All Rights Reserved.
*
* 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
*
* http://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 com.hazelcast.internal.metrics.metricsets;
import com.hazelcast.internal.metrics.MetricsRegistry;
import com.hazelcast.internal.metrics.LongProbe;
import java.lang.management.ClassLoadingMXBean;
import java.lang.management.ManagementFactory;
import static com.hazelcast.util.Preconditions.checkNotNull;
/**
* A Metric set for exposing {@link java.lang.management.ClassLoadingMXBean} metrics.
*/
public final class ClassLoadingMetricSet {
private ClassLoadingMetricSet() {
}
/**
* Registers all the metrics in this metric pack.
*
* @param metricsRegistry the MetricsRegistry upon which the metrics are registered.
*/
public static void register(MetricsRegistry metricsRegistry) {
checkNotNull(metricsRegistry, "metricsRegistry");
ClassLoadingMXBean mxBean = ManagementFactory.getClassLoadingMXBean();
metricsRegistry.register(mxBean, "classloading.loadedClassesCount",
new LongProbe() {
@Override
public long get(ClassLoadingMXBean classLoadingMXBean) {
return classLoadingMXBean.getLoadedClassCount();
}
}
);
metricsRegistry.register(mxBean, "classloading.totalLoadedClassesCount",
new LongProbe() {
@Override
public long get(ClassLoadingMXBean classLoadingMXBean) {
return classLoadingMXBean.getTotalLoadedClassCount();
}
}
);
metricsRegistry.register(mxBean, "classloading.unloadedClassCount",
new LongProbe() {
@Override
public long get(ClassLoadingMXBean classLoadingMXBean) {
return classLoadingMXBean.getUnloadedClassCount();
}
}
);
}
}