how to write to channels periodically

[W T]

Hi,

I want to run some main-thread on the server which periodically checks something, later this will be some watchdog-process.

How can I reach all channels from that main thread ? 

Snippets:

....
        bootstrap.setPipelineFactory(new ChannelPipelineFactory() {
            public ChannelPipeline getPipeline() {
                return Channels.pipeline(
                        new BasicFrameDecoder()
                        ,new DiscardServerHandler());
            }
        });

        bootstrap.setOption("child.tcpNoDelay", true);
        bootstrap.setOption("child.keepAlive", true);
        System.out.print("Binding to " + host + ":" + port + ".\n");
        bootstrap.bind(new InetSocketAddress(host, port));
     // Create and start the thread
        Thread thread = new MainLoopThread();
        thread.start();
....

///////////////

public class MainLoopThread extends Thread {
    // This method is called when the thread runs
    
    private Timer timer;
    private int seconds = 3;
    
    
    public void run() {
        System.out.println("Thread MainLoop started.");
        timer = new Timer();
        timer.schedule(new RemindTask(), seconds * 1000);        
    }

}

///////////////

class RemindTask extends TimerTask {
    private int iterations = 0;
    
    public void run() {
        System.out.println("Timer [" + iterations + "]");
        iterations++;
        
        // how to reach the channels of the connected users ?
        
        
    }
}

As you can see the RemindTask wants to reach the channels.


In my ServerHandler I keep track of the channels like this:

static final ChannelGroup channels = new DefaultChannelGroup();

And the channelConnected event adds a channel to that group and the channelDisconnected event removes it.

How do I access the ChannelGroup from my thread ? I can't just instantiate the ServerHandler again from my TimerTask and then call some public method of the ServerHandler ? 

Thanks in advance!


 		 	   		  
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