| /* |
| * 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.metric.cgroup; |
| |
| import java.io.IOException; |
| import java.util.Map; |
| import org.apache.storm.container.cgroup.SubSystemType; |
| import org.apache.storm.container.cgroup.core.CgroupCore; |
| import org.apache.storm.container.cgroup.core.CpuCore; |
| |
| /** |
| * Report the guaranteed number of ms this worker has requested. |
| * It gets the result from cpu.shares. |
| * Use this when org.apache.storm.container.cgroup.CgroupManager is used as the storm.resource.isolation.plugin. |
| */ |
| public class CGroupCpuGuarantee extends CGroupMetricsBase<Long> { |
| long previousTime = -1; |
| |
| public CGroupCpuGuarantee(Map<String, Object> conf) { |
| super(conf, SubSystemType.cpu); |
| } |
| |
| @Override |
| public Long getDataFrom(CgroupCore core) throws IOException { |
| CpuCore cpu = (CpuCore) core; |
| Long msGuarantee = null; |
| long now = System.currentTimeMillis(); |
| if (previousTime > 0) { |
| long shares = cpu.getCpuShares(); |
| //By convention each share corresponds to 1% of a CPU core |
| // or 100 = 1 core full time. So the guaranteed number of ms |
| // (approximately) should be ... |
| msGuarantee = (shares * (now - previousTime)) / 100; |
| } |
| previousTime = now; |
| return msGuarantee; |
| } |
| } |