Question

我正在尝试实现一个简单的pub子示例，其中我有一个服务器并且正在向客户端发布关于正常运行时间的定期通知。

这是作为Windows服务的一部分运行的 - 与InnoSetup和launch4j以及Apache procrun / prunsrv捆绑在一起。

该线程不会超出上下文的创建范围。可能出现什么问题？

import java.io.IOException;
import java.util.Date;
import org.msgpack.MessagePack;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.zeromq.ZMQ;
import org.ocpsoft.prettytime.*;

/**
 * Notification service for updates to configuration in the logger
 * @author Aalhad
 */
public class NotificationServer extends Thread {

    private final Logger log = LoggerFactory.getLogger(this.getClass());
    private volatile boolean shouldRun;

    private PrettyTime upTime;
    private PreferenceManager prefMgr = PreferenceManager.getInstance();
    public ZMQ.Context context;
    public ZMQ.Socket pubSocket;

    public NotificationServer() {
        log.debug("Entered notification server constructor ......................");
        context = ZMQ.context(1);
        log.debug("THIS DOES NOT GET PRINTED ... it is as if we are blocking in ZMQ.context!!!");
        pubSocket = context.socket(ZMQ.PUB);
        pubSocket.bind("tcp://*:"+prefMgr.getNotificationPort());
        pubSocket.bind("ipc://powerlogger");

        log.debug("NotificationServer created");
    }

    @Override
    public void run() {
        log.debug("Entering run loop of Notification Server");
        setStarting();
        log.debug("Writing to tcp port: {}", prefMgr.getNotificationPort());
        upTime = new PrettyTime();        
        ConfigMessage msg = prefMgr.getConfigMessage();
        MessagePack msgPack = new MessagePack();
        byte[] sendBytes;

        try {
            log.debug("Going ahead and sending: {}", msg);
            sendBytes = msgPack.write(msg);
            pubSocket.send(sendBytes);
            log.debug("Finished sending msg");
        } catch (IOException ex) {
            log.error("Could not send first config notification",ex);
        }

        //On starts and restarts, we send the current configuration to our
        //subscribers
        String upSince;
        while (shouldRun()) {
            log.trace("In the notification loop");
            upSince = upTime.format(new Date(0));
            log.trace("============================================================== Started: {}", upSince );
            ConfigMessage cfgMsg = new ConfigMessage();
            cfgMsg.msgType = MessageType.UPSINCE;
            cfgMsg.message = upSince;

            try {
                // ..... code here to write the time into a
                // messagepack structure and publishing it 
                sleep(5000);
                log.trace("After sleeping in notification loop");
            } catch (InterruptedException ex) {
                log.error("Notification thread disturbed when sleeping.");
            }
        }
    }

    public synchronized void shutDown() {
        shouldRun = false;
        log.trace("Set shouldRun to false in discovery server");
        try {
            if (pubSocket != null) {
                pubSocket.close();
                context.term();
            }
        }
        catch(Exception e) {
            log.error("Interesting situation when trying to close the discovery socket when shutting down",e);
        }
    }

    public synchronized void setStarting() {
        shouldRun = true;        
    }

    private synchronized boolean shouldRun() {
        return shouldRun;
    }       
}

Answer 1

发现错误。这是一个在创建安装程序时忘记为服务提供jar的简单问题。日志没有显示找不到类。

固定。

线程不会超过ZMQ.context（1）

1 个答案: