| /* |
| * 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.io.BufferedReader; |
| import java.io.InputStream; |
| import java.io.InputStreamReader; |
| import java.util.concurrent.Callable; |
| |
| import org.apache.uima.ducc.common.node.metrics.NodeLoadAverage; |
| import org.apache.uima.ducc.common.node.metrics.UptimeNodeLoadAverage; |
| |
| public class NodeLoadAverageCollector implements Callable<NodeLoadAverage> { |
| |
| public NodeLoadAverageCollector() { |
| } |
| |
| public NodeLoadAverage call() throws Exception { |
| return collect(); |
| } |
| |
| private NodeLoadAverage collect() throws Exception { |
| InputStream stream = null; |
| BufferedReader reader = null; |
| UptimeNodeLoadAverage uptimeLoadAverage = new UptimeNodeLoadAverage(); |
| ProcessBuilder pb = new ProcessBuilder("uptime"); |
| ; |
| pb.redirectErrorStream(true); |
| Process proc = pb.start(); |
| // spawn uptime command and scrape the output |
| stream = proc.getInputStream(); |
| reader = new BufferedReader(new InputStreamReader(stream)); |
| String line; |
| String regex = "\\s+"; |
| String filter = "load average:"; |
| // read the next line from ps output |
| while ((line = reader.readLine()) != null) { |
| int pos = 0; |
| if ((pos = line.indexOf(filter)) > -1) { |
| String la = line.substring(pos + filter.length()).replaceAll(regex, ""); |
| String[] averages = la.split(","); |
| uptimeLoadAverage.setLoadAvg1(averages[0]); |
| uptimeLoadAverage.setLoadAvg5(averages[1]); |
| uptimeLoadAverage.setLoadAvg15(averages[2]); |
| } |
| } |
| proc.waitFor(); |
| return uptimeLoadAverage; |
| } |
| } |