[FIXED] How to gracefully shutdown embeded jetty

Issue

I have an application runs on an embedded jetty server. Now i want to start/stop the server as a service. I use a script to start the server.

java $JAVA_OPTS -DREQ_JAVA_VERSION=$JAVA_VERSION -jar myjetty.jar

Main Class

Server server = new Server();
SelectChannelConnector connector = new SelectChannelConnector();
connector.setPort(PORT);
server.addConnector(connector);
HandlerCollection handlers = new HandlerCollection();
NCSARequestLog requestLog = new NCSARequestLog();
requestLog.setFilename(home + "/logs/access_" + logFileDateFormat
            + ".log");
requestLog.setFilenameDateFormat(logFileDateFormat);
requestLog.setRetainDays(10);
requestLog.setAppend(true);
requestLog.setExtended(false);
requestLog.setLogCookies(false);
requestLog.setLogTimeZone(TimeZone.getDefault().getID());
RequestLogHandler requestLogHandler = new RequestLogHandler();
requestLogHandler.setRequestLog(requestLog);
handlers.addHandler(requestLogHandler);
server.setHandler(handlers);
server.start();
server.join();

This starts the server.Stopping and/or Restarting an embedded Jetty instance via web call can be used to stop server but, How to stop the server from the script? and what changes should i make to shout down server in the main class.

Solution

There is no predefined solution to shut-down the Jetty server. The only ordered way to shut-down the Jetty server is to call the method stop() on the running server instance. You must implement the way how this method is called yourself.

You could achieve this (for example) by...

• implementing an RMI server thread and invoke the method from a RMI client
• implementing a JMX MBean and from a client call a method on that MBean
• implementing a custom handler like described in the link you have posted

If you only want to find a way which does not depend on additional tools like curl, than you could solve it for example like below (it's your own code with small modifications)

public class MyJetty {

    public static void main(String[] args) throws Exception {
        int PORT = 9103;
        String home = System.getProperty("user.home");
        String logFileDateFormat = "yyyy_MM_dd";

        // execute a request to http://localhost:9103/stop
        // instead of `curl -v http://localhost:9103/stop`
        if (args.length == 1 && "stop".equalsIgnoreCase(args[0])) {
            URL url = new URL("http", "localhost", PORT, "/stop");
            try (InputStream in = url.openStream()) {
                int r;
                while ((r = in.read()) != -1) {
                    System.out.write(r);
                }
                return;
            } catch (IOException ex) {
                System.err.println("stop Jetty failed: " + ex.getMessage());
            }
        }

        Server server = new Server();
        SelectChannelConnector connector = new SelectChannelConnector();
        connector.setPort(PORT);
        server.addConnector(connector);
        HandlerCollection handlers = new HandlerCollection();
        NCSARequestLog requestLog = new NCSARequestLog();
        requestLog.setFilename(home + "/logs/access_" + logFileDateFormat + ".log");
        requestLog.setFilenameDateFormat(logFileDateFormat);
        requestLog.setRetainDays(10);
        requestLog.setAppend(true);
        requestLog.setExtended(false);
        requestLog.setLogCookies(false);
        requestLog.setLogTimeZone(TimeZone.getDefault().getID());
        RequestLogHandler requestLogHandler = new RequestLogHandler();
        requestLogHandler.setRequestLog(requestLog);
        handlers.addHandler(requestLogHandler);

        // the class YourHandler is the one from your link
        handlers.addHandler(new YourHandler(server));

        server.setHandler(handlers);
        server.start();
        server.join();
    }
}

• start the server with java MyJetty
• stop the server with java MyJetty stop

Answered By - SubOptimal
Answer Checked By - Marilyn (JavaFixing Volunteer)