/*
 * 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.uima.ducc.agent.metrics.collectors;

import java.util.concurrent.Callable;

import org.apache.uima.ducc.agent.launcher.CGroupsManager;
import org.apache.uima.ducc.common.agent.metrics.cpu.DuccProcessCpuUsage;
import org.apache.uima.ducc.common.agent.metrics.cpu.ProcessCpuUsage;
import org.apache.uima.ducc.common.utils.DuccLogger;

public class ProcessCpuUsageCollector implements
		Callable<ProcessCpuUsage> {
	private String containerId=null;
	private CGroupsManager cgm=null;
	
	public ProcessCpuUsageCollector(DuccLogger logger, CGroupsManager mgr, String jobId ) {
		this.containerId = jobId;
		this.cgm = mgr;
	}

	public ProcessCpuUsage call() throws Exception {
		try {
			return new DuccProcessCpuUsage(collect());
		} catch (Exception e) {
			throw e;
		}
	}
	
	private long collect() throws Exception{
		// use cgroups manager to collect cpu usage
		return cgm.getCpuUsage(containerId);
	}
}