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监控服务目前看下来，只在MPushServer服务中启用；

  • 监控服务
  • 总收集器
  • 线程池信息收集
  • ……

监控服务

1、初始化总收集器；
2、打印所有监控信息到控制台；
3、根据系统负载将线程栈、堆栈输出到本地文件；

MonitorService.java

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package com.mpush.monitor.service;

import com.mpush.api.common.Monitor;
import com.mpush.api.service.BaseService;
import com.mpush.api.service.Listener;
import com.mpush.monitor.data.MonitorResult;
import com.mpush.monitor.data.ResultCollector;
import com.mpush.tools.Utils;
import com.mpush.tools.common.JVMUtil;
import com.mpush.tools.config.CC;
import com.mpush.tools.log.Logs;
import com.mpush.tools.thread.ThreadNames;

import java.util.concurrent.Executor;
import java.util.concurrent.TimeUnit;

public class MonitorService extends BaseService implements Monitor, Runnable {

    private static final int FIRST_DUMP_JSTACK_LOAD_AVG = 2,
            SECOND_DUMP_JSTACK_LOAD_AVG = 4,
            THIRD_DUMP_JSTACK_LOAD_AVG = 6,
            FIRST_DUMP_JMAP_LOAD_AVG = 4;

    private static final String dumpLogDir = CC.mp.monitor.dump_dir;
    private static final boolean dumpEnabled = CC.mp.monitor.dump_stack;
    private static final boolean printLog = CC.mp.monitor.print_log;
    private static final long dumpPeriod = CC.mp.monitor.dump_period.getSeconds();

    private volatile boolean dumpFirstJstack = false;
    private volatile boolean dumpSecondJstack = false;
    private volatile boolean dumpThirdJstack = false;
    private volatile boolean dumpJmap = false;

    private final ResultCollector collector;

    private final ThreadPoolManager threadPoolManager;

    public MonitorService() {
        threadPoolManager = new ThreadPoolManager();
        collector = new ResultCollector(threadPoolManager);
    }

    private Thread thread;

    @Override
    public void run() {
        while (isRunning()) {
            MonitorResult result = collector.collect();

            if (printLog) {
                Logs.MONITOR.info(result.toJson());
            }

            if (dumpEnabled) {
                dump();
            }

            try {
                TimeUnit.SECONDS.sleep(dumpPeriod);
            } catch (InterruptedException e) {
                if (isRunning()) stop();
            }
        }
    }

    @Override
    protected void doStart(Listener listener) throws Throwable {
        if (printLog || dumpEnabled) {
            thread = Utils.newThread(ThreadNames.T_MONITOR, this);
            thread.setDaemon(true);
            thread.start();
        }
        listener.onSuccess();
    }

    @Override
    protected void doStop(Listener listener) throws Throwable {
        if (thread != null && thread.isAlive()) thread.interrupt();
        listener.onSuccess();
    }

    private void dump() {
        double load = collector.getJvmInfo().load();
        if (load > FIRST_DUMP_JSTACK_LOAD_AVG) {
            if (!dumpFirstJstack) {
                dumpFirstJstack = true;
                JVMUtil.dumpJstack(dumpLogDir);
            }
        }

        if (load > SECOND_DUMP_JSTACK_LOAD_AVG) {
            if (!dumpSecondJstack) {
                dumpSecondJstack = true;
                JVMUtil.dumpJmap(dumpLogDir);
            }
        }

        if (load > THIRD_DUMP_JSTACK_LOAD_AVG) {
            if (!dumpThirdJstack) {
                dumpThirdJstack = true;
                JVMUtil.dumpJmap(dumpLogDir);
            }
        }

        if (load > FIRST_DUMP_JMAP_LOAD_AVG) {
            if (!dumpJmap) {
                dumpJmap = true;
                JVMUtil.dumpJmap(dumpLogDir);
            }
        }
    }


    @Override
    public void monitor(String name, Thread thread) {

    }

    @Override
    public void monitor(String name, Executor executor) {
        threadPoolManager.register(name, executor);
    }

    public ThreadPoolManager getThreadPoolManager() {
        return threadPoolManager;
    }
}

总收集器

收集类型：

  • JVMInfo
  • JVMGC 垃圾回收
  • JVMMemory 堆
  • JVMThread 线程
  • JVMThreadPool 线程池

ResultCollector.java 监控信息收集器

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package com.mpush.monitor.data;

import com.mpush.monitor.quota.impl.*;
import com.mpush.monitor.service.ThreadPoolManager;

/**
 * Created by yxx on 2016/5/19.
 *
 * @author ohun@live.cn
 */
public class ResultCollector {
    private final JVMInfo jvmInfo;
    private final JVMGC jvmgc;
    private final JVMMemory jvmMemory;
    private final JVMThread jvmThread;
    private final JVMThreadPool jvmThreadPool;

    public ResultCollector(ThreadPoolManager threadPoolManager) {
        this.jvmInfo = new JVMInfo();
        this.jvmgc = new JVMGC();
        this.jvmMemory = new JVMMemory();
        this.jvmThread = new JVMThread();
        this.jvmThreadPool = new JVMThreadPool(threadPoolManager);
    }

    public MonitorResult collect() {
        MonitorResult result = new MonitorResult();
        result.addResult("jvm-info", jvmInfo.monitor());
        result.addResult("jvm-gc", jvmgc.monitor());
        result.addResult("jvm-memory", jvmMemory.monitor());
        result.addResult("jvm-thread", jvmThread.monitor());
        result.addResult("jvm-thread-pool", jvmThreadPool.monitor());
        return result;
    }

    public JVMInfo getJvmInfo() {
        return jvmInfo;
    }

    public JVMGC getJvmgc() {
        return jvmgc;
    }

    public JVMMemory getJvmMemory() {
        return jvmMemory;
    }

    public JVMThread getJvmThread() {
        return jvmThread;
    }

    public JVMThreadPool getJvmThreadPool() {
        return jvmThreadPool;
    }
}

线程池信息收集

获取各个线程池的信息，如corePoolSize、maxPoolSize、activeCount(workingThread)、poolSize(workThread)、queueSize(blockedTask)

组装为map.put(“event-bus”,poolInfo);

JVMThreadPool.java

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package com.mpush.monitor.quota.impl;

import com.mpush.monitor.quota.ThreadPoolQuota;
import com.mpush.monitor.service.ThreadPoolManager;
import io.netty.channel.EventLoopGroup;

import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.Executor;
import java.util.concurrent.ThreadPoolExecutor;

import static com.mpush.tools.Utils.getPoolInfo;


public class JVMThreadPool implements ThreadPoolQuota {
    private final ThreadPoolManager threadPoolManager;

    public JVMThreadPool(ThreadPoolManager threadPoolManager) {
        this.threadPoolManager = threadPoolManager;
    }

    @Override
    public Object monitor(Object... args) {
        Map<String, Object> result = new HashMap<>();
        Map<String, Executor> pools = threadPoolManager.getActivePools();
        for (Map.Entry<String, Executor> entry : pools.entrySet()) {
            String serviceName = entry.getKey();
            Executor executor = entry.getValue();
            if (executor instanceof ThreadPoolExecutor) {
                result.put(serviceName, getPoolInfo((ThreadPoolExecutor) executor));
            } else if (executor instanceof EventLoopGroup) {
                result.put(serviceName, getPoolInfo((EventLoopGroup) executor));
            }
        }
        return result;
    }
}



功能组件文章目录: