| /* |
| * 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.drill.exec.metrics; |
| |
| import java.lang.management.ManagementFactory; |
| import java.lang.management.OperatingSystemMXBean; |
| import java.lang.management.RuntimeMXBean; |
| import java.util.Map; |
| |
| import com.codahale.metrics.Gauge; |
| import com.codahale.metrics.Metric; |
| import com.codahale.metrics.MetricSet; |
| import com.google.common.collect.ImmutableMap; |
| |
| /** |
| * Creates a Cpu GaugeSet |
| */ |
| @SuppressWarnings("restriction") |
| public class CpuGaugeSet implements MetricSet { |
| |
| private final OperatingSystemMXBean osMxBean = ManagementFactory.getOperatingSystemMXBean(); |
| private final RuntimeMXBean runtimeMxBean = ManagementFactory.getRuntimeMXBean(); |
| |
| @Override |
| public Map<String, Metric> getMetrics() { |
| |
| // We create each CPU gauge using an anonymous inner class that fetches |
| // its metric from the relevant Java MX bean. |
| |
| Gauge<Double> osLoadAvgGauge = new Gauge<Double>() { |
| @Override |
| public Double getValue() { |
| return osMxBean.getSystemLoadAverage(); |
| } |
| }; |
| |
| // Sun/Oracle runtimes only, c.f. DRILL-6702 and DRILL-8446. |
| Gauge<Double> procLoadAvgGauge = new Gauge<Double>() { |
| private boolean canUseSunInternalBean = true; |
| |
| @Override |
| @SuppressWarnings("restriction") |
| public Double getValue() { |
| if (!canUseSunInternalBean) { |
| return null; |
| } |
| |
| // Make a single attempt to cast to the com.sun internal class. The mere |
| // mention of com.sun must happen inside a try block. |
| try { |
| return ((com.sun.management.OperatingSystemMXBean)osMxBean).getProcessCpuLoad(); |
| |
| } catch (NoClassDefFoundError | ClassCastException e) { |
| org.slf4j.LoggerFactory.getLogger(CpuGaugeSet.class).warn( |
| "The process load gauge is not supported on this Java runtime: {}", |
| System.getProperty("java.vm.name") |
| ); |
| canUseSunInternalBean = false; |
| return null; |
| } |
| } |
| }; |
| |
| Gauge<Long> uptimeGauge = new Gauge<Long>() { |
| @Override |
| public Long getValue() { |
| return runtimeMxBean.getUptime(); |
| } |
| }; |
| |
| return ImmutableMap.of( |
| "os.load.avg", osLoadAvgGauge, |
| "drillbit.load.avg", procLoadAvgGauge, |
| "drillbit.uptime", uptimeGauge |
| ); |
| } |
| } |