io.watchcat.node.metrics.Processes.java Source code

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Here is the source code for io.watchcat.node.metrics.Processes.java

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/**
 * The MIT License (MIT)
 *
 * Copyright (c) 2014 Thomas Cashman
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
package io.watchcat.node.metrics;

import io.watchcat.node.metrics.domain.Process;
import io.watchcat.node.util.ShellCommand;

import java.util.Collections;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import java.util.concurrent.atomic.AtomicReference;

import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.common.xcontent.XContentFactory;
import org.springframework.stereotype.Component;

/**
 *
 *
 * @author Thomas Cashman
 */
@Component
public class Processes implements Runnable {
    private ShellCommand command;
    private AtomicReference<LinkedList<Process>> processes;

    public Processes() {
        command = new ShellCommand(
                "/bin/ps aux | /usr/bin/awk 'NR>1{print $1\",\"$2\",\"$3\",\"$4\",\"$5\",\"$6\",\"$7\",\"$8\",\"$9\",\"$10\",\"$11}'");

        processes = new AtomicReference<LinkedList<Process>>(new LinkedList<Process>());
    }

    @Override
    public void run() {
        String[] lines = command.execute().split("\n");

        LinkedList<Process> result = new LinkedList<Process>();
        for (int i = 0; i < lines.length; i++) {
            String[] details = lines[i].split(",");

            Process process = new Process();
            process.setUser(details[0]);
            process.setPid(Long.parseLong(details[1]));
            process.setCpuUsage(Double.parseDouble(details[2]));
            process.setMemoryUsage(Double.parseDouble(details[3]));
            process.setVsz(Integer.parseInt(details[4]));
            process.setRss(Integer.parseInt(details[5]));
            process.setTty(details[6]);
            process.setStat(details[7]);
            process.setStart(details[8]);
            process.setTime(details[9]);
            process.setCommand(details[10].trim());
            result.add(process);
        }
        Collections.sort(result);
        processes.set(result);
    }

    public List<Process> getProcesses() {
        return processes.get();
    }

    public XContentBuilder toJson(long timestamp) {
        try {
            XContentBuilder builder = XContentFactory.jsonBuilder();
            builder = builder.startObject();
            builder = builder.field("timestamp", timestamp);
            builder = builder.startArray("processes");

            Iterator<Process> iterator = processes.get().iterator();
            while (iterator.hasNext()) {
                Process process = iterator.next();
                builder = builder.startObject();
                builder = builder.field("user", process.getUser());
                builder = builder.field("pid", process.getPid());
                builder = builder.field("cpu", process.getCpuUsage());
                builder = builder.field("memory", process.getMemoryUsage());
                builder = builder.field("vsz", process.getVsz());
                builder = builder.field("rss", process.getRss());
                builder = builder.field("tty", process.getTty());
                builder = builder.field("stat", process.getStat());
                builder = builder.field("start", process.getStart());
                builder = builder.field("time", process.getTime());
                builder = builder.field("command", process.getCommand());
                builder = builder.endObject();
            }

            builder = builder.endArray();
            builder = builder.endObject();
            return builder;
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }
}