| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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 org.apache.solr.metrics; |
| |
| import java.lang.management.BufferPoolMXBean; |
| import java.lang.management.ManagementFactory; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| |
| import com.codahale.metrics.Gauge; |
| import com.codahale.metrics.Metric; |
| import com.codahale.metrics.MetricSet; |
| |
| /** |
| * This is an alternative implementation of {@link com.codahale.metrics.jvm.BufferPoolMetricSet} that |
| * doesn't need an MBean server. |
| */ |
| public class AltBufferPoolMetricSet implements MetricSet { |
| |
| @Override |
| public Map<String, Metric> getMetrics() { |
| final Map<String, Metric> metrics = new HashMap<>(); |
| List<BufferPoolMXBean> pools = ManagementFactory.getPlatformMXBeans(BufferPoolMXBean.class); |
| for (final BufferPoolMXBean pool : pools) { |
| String name = pool.getName(); |
| metrics.put(name + ".Count", (Gauge<Long>)() -> pool.getCount()); |
| metrics.put(name + ".MemoryUsed", (Gauge<Long>)() -> pool.getMemoryUsed()); |
| metrics.put(name + ".TotalCapacity", (Gauge<Long>)() -> pool.getTotalCapacity()); |
| } |
| return metrics; |
| } |
| } |