| /** |
| * 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.storm.metrics.sigar; |
| |
| import org.hyperic.sigar.Sigar; |
| import org.hyperic.sigar.ProcCpu; |
| |
| import backtype.storm.metric.api.IMetric; |
| |
| import java.util.HashMap; |
| |
| /** |
| * A metric using Sigar to get User and System CPU utilization for a worker. |
| */ |
| public class CPUMetric implements IMetric { |
| private long _prevUser = 0; |
| private long _prevSys = 0; |
| private final Sigar _sigar; |
| private final long _pid; |
| |
| public CPUMetric() { |
| _sigar = new Sigar(); |
| _pid = _sigar.getPid(); |
| } |
| |
| @Override |
| public Object getValueAndReset() { |
| try { |
| ProcCpu cpu = _sigar.getProcCpu(_pid); |
| long userTotal = cpu.getUser(); |
| long sysTotal = cpu.getSys(); |
| long user = userTotal - _prevUser; |
| long sys = sysTotal - _prevSys; |
| _prevUser = userTotal; |
| _prevSys = sysTotal; |
| |
| HashMap<String, Long> ret = new HashMap<String, Long>(); |
| ret.put("user-ms", user); |
| ret.put("sys-ms", sys); |
| return ret; |
| } catch (Exception e) { |
| throw new RuntimeException(e); |
| } |
| } |
| } |