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

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Here is the source code for io.watchcat.node.metrics.MemoryUsage.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.util.ShellCommand;

import java.util.concurrent.atomic.AtomicInteger;

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

/**
 * Gathers the current RAM and swap usage of the system
 *
 * @author Thomas Cashman
 */
@Component
public class MemoryUsage implements Runnable {
    private ShellCommand command;
    private AtomicInteger totalMemory;
    private AtomicInteger totalSwap;
    private AtomicInteger usedMemory;
    private AtomicInteger usedSwap;

    public MemoryUsage() {
        command = new ShellCommand(
                "/usr/bin/free -tmo | /usr/bin/awk '{print $1\",\"$2\",\"$3-$6-$7\",\"$4+$6+$7}'");

        totalMemory = new AtomicInteger();
        totalSwap = new AtomicInteger();
        usedMemory = new AtomicInteger();
        usedSwap = new AtomicInteger();
    }

    @Override
    public void run() {
        String result = command.execute();

        String[] lines = result.split("\n");

        String[] memory = lines[1].split(",");
        String[] swap = lines[2].split(",");

        totalMemory.set(Integer.parseInt(memory[1]));
        totalSwap.set(Integer.parseInt(swap[1]));

        usedMemory.set(Integer.parseInt(memory[2]));
        usedSwap.set(Integer.parseInt(swap[2]));
    }

    public XContentBuilder toJson(long timestamp) {
        try {
            XContentBuilder builder = XContentFactory.jsonBuilder();
            builder = builder.startObject();
            builder = builder.field("timestamp", timestamp);
            builder = builder.field("totalMemory", getTotalMemory());
            builder = builder.field("totalSwap", getTotalSwap());
            builder = builder.field("usedMemory", getUsedMemory());
            builder = builder.field("usedSwap", getUsedSwap());
            builder = builder.endObject();
            return builder;
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }

    @Override
    public String toString() {
        return "MemoryUsage [totalMemory=" + totalMemory.get() + "mb, totalSwap=" + totalSwap.get()
                + "mb, usedMemory=" + usedMemory.get() + "mb, usedSwap=" + usedSwap.get() + "mb]";
    }

    public int getTotalMemory() {
        return totalMemory.get();
    }

    public void setTotalMemory(int totalMemory) {
        this.totalMemory.set(totalMemory);
    }

    public int getTotalSwap() {
        return totalSwap.get();
    }

    public void setTotalSwap(int totalSwap) {
        this.totalSwap.set(totalSwap);
    }

    public int getUsedMemory() {
        return usedMemory.get();
    }

    public void setUsedMemory(int usedMemory) {
        this.usedMemory.set(usedMemory);
    }

    public int getUsedSwap() {
        return usedSwap.get();
    }

    public void setUsedSwap(int usedSwap) {
        this.usedSwap.set(usedSwap);
    }
}