JvmMetricsMounter.java
/*
* #%L
* wcm.io
* %%
* Copyright (C) 2014 wcm.io
* %%
* 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.
* #L%
*/
package io.wcm.caravan.commons.metrics.impl;
import java.lang.management.ManagementFactory;
import org.apache.felix.scr.annotations.Activate;
import org.apache.felix.scr.annotations.Component;
import org.apache.felix.scr.annotations.Deactivate;
import org.apache.felix.scr.annotations.Reference;
import com.codahale.metrics.MetricRegistry;
import com.codahale.metrics.jvm.BufferPoolMetricSet;
import com.codahale.metrics.jvm.ClassLoadingGaugeSet;
import com.codahale.metrics.jvm.GarbageCollectorMetricSet;
import com.codahale.metrics.jvm.MemoryUsageGaugeSet;
import com.codahale.metrics.jvm.ThreadStatesGaugeSet;
/**
* Adds JVM details to the Metrics registry.
*/
@Component
public class JvmMetricsMounter {
private static final String PREFIX = "jvm";
@Reference
private MetricRegistry metricRegistry;
@Activate
protected void activate() {
metricRegistry.register(MetricRegistry.name(PREFIX, "gc"), new GarbageCollectorMetricSet());
metricRegistry.register(MetricRegistry.name(PREFIX, "buffers"), new BufferPoolMetricSet(ManagementFactory.getPlatformMBeanServer()));
metricRegistry.register(MetricRegistry.name(PREFIX, "memory"), new MemoryUsageGaugeSet());
metricRegistry.register(MetricRegistry.name(PREFIX, "threads"), new ThreadStatesGaugeSet());
metricRegistry.register(MetricRegistry.name(PREFIX, "classLoaders"), new ClassLoadingGaugeSet());
}
@Deactivate
protected void deactivate() {
metricRegistry.remove(MetricRegistry.name(PREFIX, "gc"));
metricRegistry.remove(MetricRegistry.name(PREFIX, "buffers"));
metricRegistry.remove(MetricRegistry.name(PREFIX, "memory"));
metricRegistry.remove(MetricRegistry.name(PREFIX, "threads"));
metricRegistry.remove(MetricRegistry.name(PREFIX, "classLoaders"));
}
}