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

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Here is the source code for io.watchcat.node.metrics.DiskUsage.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.Disk;
import io.watchcat.node.util.ShellCommand;

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;

/**
 * Gathers disk usage figures for the system.
 * 
 * Note: All data is retrieved in megabytes
 *
 * @author Thomas Cashman
 */
@Component
public class DiskUsage implements Runnable {
    private ShellCommand command;
    private AtomicReference<LinkedList<Disk>> disks;

    public DiskUsage() {
        command = new ShellCommand("/bin/df --block-size=1M|awk '{print $1\",\"$2\",\"$3\",\"$4\",\"$5\",\"$6}'");
        disks = new AtomicReference<>(new LinkedList<Disk>());
    }

    @Override
    public void run() {
        LinkedList<Disk> result = new LinkedList<Disk>();
        String commandResult = command.execute();

        String[] lines = commandResult.split("\n");
        for (int i = 1; i < lines.length; i++) {
            String[] diskInfo = lines[i].split(",");
            Disk disk = new Disk(diskInfo[0], Integer.parseInt(diskInfo[1]), Integer.parseInt(diskInfo[2]),
                    Integer.parseInt(diskInfo[3]), Integer.parseInt(diskInfo[4].replace("%", "")), diskInfo[5]);
            result.add(disk);
        }

        disks.set(result);
    }

    @Override
    public String toString() {
        StringBuilder stringBuilder = new StringBuilder();
        stringBuilder.append("DiskUsage [disk=\n");

        List<Disk> items = disks.get();
        Iterator<Disk> iterator = items.iterator();
        while (iterator.hasNext()) {
            Disk disk = iterator.next();
            stringBuilder.append(disk);
            stringBuilder.append("\n");
        }
        stringBuilder.append("]");
        return stringBuilder.toString();
    }

    public List<Disk> getDisks() {
        return disks.get();
    }

    public void setDisks(LinkedList<Disk> disks) {
        this.disks.set(disks);
    }
}