Java Code Examples for org.eclipse.jetty.server.handler.HandlerCollection#setHandlers()

public void start() throws PulsarServerException {
    log.info("Starting web socket proxy at port {}", conf.getWebServicePort().get());
    RequestLogHandler requestLogHandler = new RequestLogHandler();
    Slf4jRequestLog requestLog = new Slf4jRequestLog();
    requestLog.setExtended(true);
    requestLog.setLogTimeZone(TimeZone.getDefault().getID());
    requestLog.setLogLatency(true);
    requestLogHandler.setRequestLog(requestLog);
    handlers.add(0, new ContextHandlerCollection());
    handlers.add(requestLogHandler);

    ContextHandlerCollection contexts = new ContextHandlerCollection();
    contexts.setHandlers(handlers.toArray(new Handler[handlers.size()]));

    HandlerCollection handlerCollection = new HandlerCollection();
    handlerCollection.setHandlers(new Handler[] { contexts, new DefaultHandler(), requestLogHandler });
    server.setHandler(handlerCollection);

    try {
        server.start();
    } catch (Exception e) {
        throw new PulsarServerException(e);
    }
}
 

public static void main( String[] args )
    throws Exception
{
    Server server = new Server( 8080 );

    WebAppContext webappcontext = new WebAppContext( "src/main/webapp", "/jaxrs" );

    ContextHandlerCollection servlet_contexts = new ContextHandlerCollection();
    webappcontext.setClassLoader( Thread.currentThread().getContextClassLoader() );
    HandlerCollection handlers = new HandlerCollection();
    handlers.setHandlers( new Handler[] { servlet_contexts, webappcontext, new DefaultHandler() } );

    server.setHandler( handlers );


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

protected static void startServers(String port) throws Exception {
    server = new org.eclipse.jetty.server.Server(Integer.parseInt(port));

    WebAppContext webappcontext = new WebAppContext();
    String contextPath = null;
    try {
        contextPath = JAXRSClientServerWebSocketSpringWebAppTest.class
            .getResource("/jaxrs_websocket").toURI().getPath();
    } catch (URISyntaxException e1) {
        e1.printStackTrace();
    }
    webappcontext.setContextPath("/webapp");

    webappcontext.setWar(contextPath);
    HandlerCollection handlers = new HandlerCollection();
    handlers.setHandlers(new Handler[] {webappcontext, new DefaultHandler()});
    server.setHandler(handlers);
    server.start();
}
 

protected Server() throws Exception {
    System.out.println("Starting Server");

    /**
     * Important: This code simply starts up a servlet container and adds
     * the web application in src/webapp to it. Normally you would be using
     * Jetty or Tomcat and have the webapp packaged as a WAR. This is simply
     * as a convenience so you do not need to configure your servlet
     * container to see CXF in action!
     */
    org.eclipse.jetty.server.Server server = new org.eclipse.jetty.server.Server(9002);

    WebAppContext webappcontext = new WebAppContext();
    webappcontext.setContextPath("/");

    webappcontext.setWar("target/GroovySpringSupport.war");

    HandlerCollection handlers = new HandlerCollection();
    handlers.setHandlers(new Handler[] {webappcontext, new DefaultHandler()});

    server.setHandler(handlers);
    server.start();
    System.out.println("Server ready...");
    server.join();
}
 

@Override
public void configure() throws Exception {
    server.addEventListener(mbeans());
    server.addConnector(plainConnector());

    ContextHandlerCollection handlers = new ContextHandlerCollection();
    deploymentManager.setContexts(handlers);

    createWebAppContext();

    JettyCustomErrorPageHandler errorHandler = new JettyCustomErrorPageHandler();
    webAppContext.setErrorHandler(errorHandler);
    webAppContext.setGzipHandler(gzipHandler());
    server.addBean(errorHandler);
    server.addBean(deploymentManager);

    HandlerCollection serverLevelHandlers = new HandlerCollection();
    serverLevelHandlers.setHandlers(new Handler[]{handlers});
    server.setHandler(serverLevelHandlers);

    performCustomConfiguration();
    server.setStopAtShutdown(true);
}
 

public static void main(String[] args) throws Exception {
	URI baseUri = UriBuilder.fromUri("http://localhost").port(SERVER_PORT)
			.build();
	ResourceConfig config = new ResourceConfig(Calculator.class);
	Server server = JettyHttpContainerFactory.createServer(baseUri, config,
			false);

	ContextHandler contextHandler = new ContextHandler("/rest");
	contextHandler.setHandler(server.getHandler());
	
	ProtectionDomain protectionDomain = EmbeddedServer.class
			.getProtectionDomain();
	URL location = protectionDomain.getCodeSource().getLocation();
	
	ResourceHandler resourceHandler = new ResourceHandler();
	resourceHandler.setWelcomeFiles(new String[] { "index.html" });
	resourceHandler.setResourceBase(location.toExternalForm());
	System.out.println(location.toExternalForm());
	HandlerCollection handlerCollection = new HandlerCollection();
	handlerCollection.setHandlers(new Handler[] { resourceHandler,
			contextHandler, new DefaultHandler() });
	server.setHandler(handlerCollection);
	server.start();
	server.join();
}
 

protected static void startServers(String port) throws Exception {
    server = new org.eclipse.jetty.server.Server(Integer.parseInt(port));

    WebAppContext webappcontext = new WebAppContext();
    String contextPath = null;
    try {
        contextPath = JAXRSClientServerWebSocketSpringWebAppTest.class
            .getResource("/jaxrs_websocket").toURI().getPath();
    } catch (URISyntaxException e1) {
        e1.printStackTrace();
    }
    webappcontext.setContextPath("/webapp");

    webappcontext.setWar(contextPath);
    HandlerCollection handlers = new HandlerCollection();
    handlers.setHandlers(new Handler[] {webappcontext, new DefaultHandler()});
    server.setHandler(handlers);
    server.start();
}
 

private static void initServer(Properties properties) throws Exception {
    Integer port = Integer.valueOf(properties.getProperty("server.port"));
    String host = properties.getProperty("server.host");

    Integer clientId = Integer.valueOf(properties.getProperty("client.id"));
    String clientSecret = properties.getProperty("client.secret");

    HandlerCollection handlers = new HandlerCollection();

    ResourceHandler resourceHandler = new ResourceHandler();
    resourceHandler.setDirectoriesListed(true);
    resourceHandler.setWelcomeFiles(new String[]{"index.html"});
    resourceHandler.setResourceBase(Application.class.getResource("/static").getPath());

    VkApiClient vk = new VkApiClient(new HttpTransportClient());
    handlers.setHandlers(new Handler[]{resourceHandler, new RequestHandler(vk, clientId, clientSecret, host)});

    Server server = new Server(port);
    server.setHandler(handlers);

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

private static void initServer(Properties properties) throws Exception {
    Integer port = Integer.valueOf(properties.getProperty("server.port"));
    String host = properties.getProperty("server.host");

    Integer clientId = Integer.valueOf(properties.getProperty("client.id"));
    String clientSecret = properties.getProperty("client.secret");

    HandlerCollection handlers = new HandlerCollection();

    ResourceHandler resourceHandler = new ResourceHandler();
    resourceHandler.setDirectoriesListed(true);
    resourceHandler.setWelcomeFiles(new String[]{"index.html"});
    resourceHandler.setResourceBase(Application.class.getResource("/static").getPath());

    VkApiClient vk = new VkApiClient(new HttpTransportClient());
    handlers.setHandlers(new Handler[]{resourceHandler, new RequestHandler(vk, clientId, clientSecret, host)});

    Server server = new Server(port);
    server.setHandler(handlers);

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

protected Server() throws Exception {
    System.out.println("Starting Server");

    /**
     * Important: This code simply starts up a servlet container and adds
     * the web application in src/webapp to it. Normally you would be using
     * Jetty or Tomcat and have the webapp packaged as a WAR. This is simply
     * as a convenience so you do not need to configure your servlet
     * container to see CXF in action!
     */
    org.eclipse.jetty.server.Server server = new org.eclipse.jetty.server.Server(9002);

    WebAppContext webappcontext = new WebAppContext();
    webappcontext.setContextPath("/");

    webappcontext.setWar("target/JavaFirstSpringSupport.war");

    HandlerCollection handlers = new HandlerCollection();
    handlers.setHandlers(new Handler[] {webappcontext, new DefaultHandler()});

    server.setHandler(handlers);
    server.start();
    System.out.println("Server ready...");
    server.join();
}
 

public static void main(String args[]) throws Exception {
	org.eclipse.jetty.server.Server adminServer = new org.eclipse.jetty.server.Server();
	ServerConnector connector = new ServerConnector(adminServer);
	connector.setPort(8083);
	adminServer.setConnectors(new Connector[]{ connector });
	
	Constraint constraint = new Constraint();
	constraint.setName(Constraint.__BASIC_AUTH);
	constraint.setRoles(new String[] {"admin_role"});
	constraint.setAuthenticate(true);
	
	ConstraintMapping cm = new ConstraintMapping();
	cm.setConstraint(constraint);
	cm.setPathSpec("/*");
	
	HashLoginService loginService = new HashLoginService("Please enter Chipster Admin username and password");
	loginService.update("chipster", 
			new Password("chipster"), 
			new String[] {"admin_role"});
	
	ConstraintSecurityHandler sh = new ConstraintSecurityHandler();
	sh.setLoginService(loginService);
	sh.addConstraintMapping(cm);
	
	WebAppContext context = new WebAppContext();
	File war = new File("../chipster/dist/admin-web.war");
	//File war = new File("webapps/admin-web.war");
	context.setWar(war.getAbsolutePath());
	System.out.println(war.getAbsolutePath());
       context.setContextPath("/");
			
       context.setHandler(sh);
	HandlerCollection handlers = new HandlerCollection();
	handlers.setHandlers(new Handler[] {context, new DefaultHandler()});
			
	adminServer.setHandler(handlers);
       adminServer.start();
}
 

public String startJetty(Class<? extends HttpServlet> loginServletClass) throws Exception {
    Server server = new Server(0);

    ResourceHandler resourceHandler = new ResourceHandler();
    MimeTypes mimeTypes = new MimeTypes();
    mimeTypes.addMimeMapping("json", "application/json");
    resourceHandler.setMimeTypes(mimeTypes);
    URL url = this.getClass().getResource(".");
    resourceHandler.setBaseResource(new FileResource(url));
    resourceHandler.setWelcomeFiles(new String[] {"changes.json", "projects.json", "account.json"});

    ServletContextHandler servletContextHandler = new ServletContextHandler();
    servletContextHandler.addServlet(loginServletClass, "/login/");

    ServletContextHandler basicAuthContextHandler = new ServletContextHandler(ServletContextHandler.SECURITY);
    basicAuthContextHandler.setSecurityHandler(basicAuth("foo", "bar", "Gerrit Auth"));
    basicAuthContextHandler.setContextPath("/a");

    HandlerCollection handlers = new HandlerCollection();
    handlers.setHandlers(new Handler[] {
        servletContextHandler,
        resourceHandler,
        basicAuthContextHandler
    });
    server.setHandler(handlers);

    server.start();

    Connector connector = server.getConnectors()[0];
    String host = "localhost";
    int port = connector.getLocalPort();
    return String.format("http://%s:%s", host, port);
}
 

private static void initServer(Properties properties) throws Exception {
    Integer port = Integer.valueOf(properties.getProperty("server.port"));
    String host = properties.getProperty("server.host");
    HandlerCollection handlers = new HandlerCollection();

    ConfirmationCodeRequestHandler confirmationCodeRequestHandler = null;

    GetCallbackServersResponse getCallbackServersResponse = vk.groups().getCallbackServers(actor, actor.getGroupId()).execute();
    CallbackServer callbackServer = isServerExist(getCallbackServersResponse.getItems(), host);

    if (callbackServer == null) {
        GetCallbackConfirmationCodeResponse getCallbackConfirmationCodeResponse = vk().groups().getCallbackConfirmationCode(actor, actor.getGroupId()).execute();
        String confirmationCode = getCallbackConfirmationCodeResponse.getCode();
        confirmationCodeRequestHandler = new ConfirmationCodeRequestHandler(confirmationCode);
    }

    CallbackRequestHandler callbackRequestHandler = new CallbackRequestHandler();

    if (callbackServer == null) {
        handlers.setHandlers(new Handler[]{confirmationCodeRequestHandler, callbackRequestHandler});
    } else {
        handlers.setHandlers(new Handler[]{callbackRequestHandler}); //temp solution
    }

    Server server = new Server(port);
    server.setHandler(handlers);

    server.start();

    if (callbackServer == null) {
        AddCallbackServerResponse addServerResponse = vk.groups().addCallbackServer(actor, actor.getGroupId(), host, "YouTrack Bot").execute();
        Integer serverId = addServerResponse.getServerId();
        vk.groups().setCallbackSettings(actor, serverId).messageNew(true).execute();
    }

    server.join();
}
 

/**
 * Start the server with a http port and optional javamelody parameters.
 * @param port Http port
 * @param parameters Optional javamelody parameters
 * @throws Exception e
 */
public static void start(int port, Map<Parameter, String> parameters) throws Exception {
	// Init jetty
	server = new Server(port);
	final ContextHandlerCollection contexts = new ContextHandlerCollection();
	final ServletContextHandler context = new ServletContextHandler(contexts, "/",
			ServletContextHandler.SESSIONS);

	final net.bull.javamelody.MonitoringFilter monitoringFilter = new net.bull.javamelody.MonitoringFilter();
	monitoringFilter.setApplicationType("Standalone");
	final FilterHolder filterHolder = new FilterHolder(monitoringFilter);
	if (parameters != null) {
		for (final Map.Entry<Parameter, String> entry : parameters.entrySet()) {
			final net.bull.javamelody.Parameter parameter = entry.getKey();
			final String value = entry.getValue();
			filterHolder.setInitParameter(parameter.getCode(), value);
		}
	}
	context.addFilter(filterHolder, "/*",
			EnumSet.of(DispatcherType.INCLUDE, DispatcherType.REQUEST));

	context.addEventListener(new SessionListener());

	final RequestLogHandler requestLogHandler = new RequestLogHandler();
	contexts.addHandler(requestLogHandler);

	final HandlerCollection handlers = new HandlerCollection();
	handlers.setHandlers(new Handler[] { contexts });
	server.setHandler(handlers);

	server.start();
}
 

/**
 * Start the server with a http port and optional javamelody parameters.
 * @param port Http port
 * @param parameters Optional javamelody parameters
 * @throws Exception e
 */
public static void start(int port, Map<Parameter, String> parameters) throws Exception {
	// Init jetty
	final Server server = new Server(port);
	final ContextHandlerCollection contexts = new ContextHandlerCollection();
	final ServletContextHandler context = new ServletContextHandler(contexts, "/",
			ServletContextHandler.SESSIONS);

	final net.bull.javamelody.MonitoringFilter monitoringFilter = new net.bull.javamelody.MonitoringFilter();
	monitoringFilter.setApplicationType("Standalone");
	final FilterHolder filterHolder = new FilterHolder(monitoringFilter);
	if (parameters != null) {
		for (final Map.Entry<Parameter, String> entry : parameters.entrySet()) {
			final net.bull.javamelody.Parameter parameter = entry.getKey();
			final String value = entry.getValue();
			filterHolder.setInitParameter(parameter.getCode(), value);
		}
	}
	context.addFilter(filterHolder, "/*",
			EnumSet.of(DispatcherType.INCLUDE, DispatcherType.REQUEST));

	final RequestLogHandler requestLogHandler = new RequestLogHandler();
	contexts.addHandler(requestLogHandler);

	final HandlerCollection handlers = new HandlerCollection();
	handlers.setHandlers(new Handler[] { contexts });
	server.setHandler(handlers);

	server.start();
}
 

public void start() {

	try {
		// initialise config and logging
		DirectoryLayout.initialiseServerLayout(Arrays.asList(new String[] {"webstart"}));
		Configuration configuration = DirectoryLayout.getInstance().getConfiguration();
		logger = Logger.getLogger(WebstartJettyServer.class);
		if (logger.isDebugEnabled()) {
			System.setProperty("DEBUG", "true");
		}

		// initialise jetty
		jettyInstance = new Server();
		ServerConnector connector = new ServerConnector(jettyInstance);
		connector.setPort(configuration.getInt("webstart", "port"));
		jettyInstance.setConnectors(new Connector[]{ connector });

		// webstart front page
		ServletContextHandler wsRoot = new ServletContextHandler(jettyInstance, "/", false, false);
		wsRoot.setResourceBase(DirectoryLayout.WEB_ROOT + "/");
		wsRoot.addServlet(new ServletHolder(new DefaultServlet()), "/*");
		
		// dynamic jnlp servlet
		wsRoot.addServlet(new ServletHolder(new JnlpServlet()), "/servlet.jnlp");

		// tooleditor web app
		WebAppContext context = new WebAppContext();
		context.setWar(new File(DirectoryLayout.getInstance().getWebappsDir(), "tool-editor.war").getAbsolutePath());
        context.setContextPath("/tool-editor");
		
        // seems to work like this, no idea if this is correct way to do it
		HandlerCollection handlers = new HandlerCollection();
		handlers.setHandlers(new Handler[] {context, wsRoot});
		jettyInstance.setHandler(handlers);
		
		jettyInstance.start();

		// create keep-alive thread and register shutdown hook
		KeepAliveShutdownHandler.init(this);
		
		logger.info("webstart is up and running [" + ApplicationConstants.VERSION + "]");
		logger.info("[mem: " + SystemMonitorUtil.getMemInfo() + "]");

	} catch (Exception e) {
		e.printStackTrace();
		logger.error(e, e);
	}
}
 

public void start(Keeper keeper) {
    log.info("Starting REST server");

    ResourceConfig resourceConfig = new ResourceConfig();
    resourceConfig.packages("com.ucar.datalink.worker.core.runtime.rest.resources");
    resourceConfig.register(new FastJsonProvider());
    resourceConfig.register(RootResource.class);
    resourceConfig.register(new TasksResource(keeper));
    resourceConfig.register(RestExceptionMapper.class);
    resourceConfig.register(FlushResource.class);
    resourceConfig.register(HBaseMetaResource.class);
    resourceConfig.register(WorkerResource.class);

    ServletContainer servletContainer = new ServletContainer(resourceConfig);
    ServletHolder servletHolder = new ServletHolder(servletContainer);

    ServletContextHandler context = new ServletContextHandler(ServletContextHandler.SESSIONS);
    context.setContextPath("/");
    context.addServlet(servletHolder, "/*");

    String allowedOrigins = config.getString(WorkerConfig.ACCESS_CONTROL_ALLOW_ORIGIN_CONFIG);
    if (allowedOrigins != null && !allowedOrigins.trim().isEmpty()) {
        FilterHolder filterHolder = new FilterHolder(new CrossOriginFilter());
        filterHolder.setName("cross-origin");
        filterHolder.setInitParameter(CrossOriginFilter.ALLOWED_ORIGINS_PARAM, allowedOrigins);
        String allowedMethods = config.getString(WorkerConfig.ACCESS_CONTROL_ALLOW_METHODS_CONFIG);
        if (allowedMethods != null && !allowedOrigins.trim().isEmpty()) {
            filterHolder.setInitParameter(CrossOriginFilter.ALLOWED_METHODS_PARAM, allowedMethods);
        }
        context.addFilter(filterHolder, "/*", EnumSet.of(DispatcherType.REQUEST));
    }

    RequestLogHandler requestLogHandler = new RequestLogHandler();
    Slf4jRequestLog requestLog = new Slf4jRequestLog();
    requestLog.setLoggerName(RestServer.class.getCanonicalName());
    requestLog.setLogLatency(true);
    requestLogHandler.setRequestLog(requestLog);

    HandlerCollection handlers = new HandlerCollection();
    handlers.setHandlers(new Handler[]{context, new DefaultHandler(), requestLogHandler});

    /* Needed for graceful shutdown as per `setStopTimeout` documentation */
    StatisticsHandler statsHandler = new StatisticsHandler();
    statsHandler.setHandler(handlers);
    jettyServer.setHandler(statsHandler);
    jettyServer.setStopTimeout(GRACEFUL_SHUTDOWN_TIMEOUT_MS);
    jettyServer.setStopAtShutdown(true);

    try {
        jettyServer.start();
    } catch (Exception e) {
        throw new DatalinkException("Unable to start REST server", e);
    }

    log.info("REST server listening at " + jettyServer.getURI() + ", advertising URL " + advertisedUrl());
}
 

private void init() {
    server = new Server(webServerExecutor);

    List<ServerConnector> connectors = new ArrayList<>();
    httpConnector = new ServerConnector(server, 1, 1);
    httpConnector.setPort(this.workerConfig.getWorkerPort());
    connectors.add(httpConnector);

    List<Handler> handlers = new ArrayList<>(4);
    handlers.add(
            newServletContextHandler("/admin", new ResourceConfig(Resources.getApiV2Resources()), workerService));
    handlers.add(
            newServletContextHandler("/admin/v2", new ResourceConfig(Resources.getApiV2Resources()), workerService));
    handlers.add(
            newServletContextHandler("/admin/v3", new ResourceConfig(Resources.getApiV3Resources()), workerService));
    // don't require auth for metrics or config routes
    handlers.add(newServletContextHandler("/", new ResourceConfig(Resources.getRootResources()), workerService, workerConfig.isAuthenticateMetricsEndpoint()));

    RequestLogHandler requestLogHandler = new RequestLogHandler();
    Slf4jRequestLog requestLog = new Slf4jRequestLog();
    requestLog.setExtended(true);
    requestLog.setLogTimeZone(TimeZone.getDefault().getID());
    requestLog.setLogLatency(true);
    requestLogHandler.setRequestLog(requestLog);
    handlers.add(0, new ContextHandlerCollection());
    handlers.add(requestLogHandler);

    ContextHandlerCollection contexts = new ContextHandlerCollection();
    contexts.setHandlers(handlers.toArray(new Handler[handlers.size()]));
    HandlerCollection handlerCollection = new HandlerCollection();
    handlerCollection.setHandlers(new Handler[] { contexts, new DefaultHandler(), requestLogHandler });
    server.setHandler(handlerCollection);

    if (this.workerConfig.getWorkerPortTls() != null) {
        try {
            SslContextFactory sslCtxFactory = SecurityUtility.createSslContextFactory(
                    this.workerConfig.isTlsAllowInsecureConnection(), this.workerConfig.getTlsTrustCertsFilePath(),
                    this.workerConfig.getTlsCertificateFilePath(), this.workerConfig.getTlsKeyFilePath(),
                    this.workerConfig.isTlsRequireTrustedClientCertOnConnect(),
                    true,
                    this.workerConfig.getTlsCertRefreshCheckDurationSec());
            httpsConnector = new ServerConnector(server, 1, 1, sslCtxFactory);
            httpsConnector.setPort(this.workerConfig.getWorkerPortTls());
            connectors.add(httpsConnector);
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    // Limit number of concurrent HTTP connections to avoid getting out of file descriptors
    connectors.forEach(c -> c.setAcceptQueueSize(MAX_CONCURRENT_REQUESTS / connectors.size()));
    server.setConnectors(connectors.toArray(new ServerConnector[connectors.size()]));
}
 

final Handler configureHandler() {
  ResourceConfig resourceConfig = new ResourceConfig();
  configureBaseApplication(resourceConfig, getMetricsTags());
  configureResourceExtensions(resourceConfig);
  setupResources(resourceConfig, getConfiguration());

  // Configure the servlet container
  ServletContainer servletContainer = new ServletContainer(resourceConfig);
  final FilterHolder servletHolder = new FilterHolder(servletContainer);

  ServletContextHandler context = new ServletContextHandler(ServletContextHandler.SESSIONS);
  context.setContextPath(path);

  ServletHolder defaultHolder = new ServletHolder("default", DefaultServlet.class);
  defaultHolder.setInitParameter("dirAllowed", "false");

  ResourceCollection staticResources = getStaticResources();
  if (staticResources != null) {
    context.setBaseResource(staticResources);
  }

  configureSecurityHandler(context);

  if (isCorsEnabled()) {
    String allowedOrigins = config.getString(RestConfig.ACCESS_CONTROL_ALLOW_ORIGIN_CONFIG);
    FilterHolder filterHolder = new FilterHolder(CrossOriginFilter.class);
    filterHolder.setName("cross-origin");
    filterHolder.setInitParameter(
            CrossOriginFilter.ALLOWED_ORIGINS_PARAM, allowedOrigins

    );
    String allowedMethods = config.getString(RestConfig.ACCESS_CONTROL_ALLOW_METHODS);
    String allowedHeaders = config.getString(RestConfig.ACCESS_CONTROL_ALLOW_HEADERS);
    if (allowedMethods != null && !allowedMethods.trim().isEmpty()) {
      filterHolder.setInitParameter(CrossOriginFilter.ALLOWED_METHODS_PARAM, allowedMethods);
    }
    if (allowedHeaders != null && !allowedHeaders.trim().isEmpty()) {
      filterHolder.setInitParameter(CrossOriginFilter.ALLOWED_HEADERS_PARAM, allowedHeaders);
    }
    // handle preflight cors requests at the filter level, do not forward down the filter chain
    filterHolder.setInitParameter(CrossOriginFilter.CHAIN_PREFLIGHT_PARAM, "false");
    context.addFilter(filterHolder, "/*", EnumSet.of(DispatcherType.REQUEST));
  }

  if (config.getString(RestConfig.RESPONSE_HTTP_HEADERS_CONFIG) != null
          && !config.getString(RestConfig.RESPONSE_HTTP_HEADERS_CONFIG).isEmpty()) {
    configureHttpResponsHeaderFilter(context);
  }

  configurePreResourceHandling(context);
  context.addFilter(servletHolder, "/*", null);
  configurePostResourceHandling(context);
  context.addServlet(defaultHolder, "/*");

  applyCustomConfiguration(context, REST_SERVLET_INITIALIZERS_CLASSES_CONFIG);

  RequestLogHandler requestLogHandler = new RequestLogHandler();
  requestLogHandler.setRequestLog(requestLog);

  HandlerCollection handlers = new HandlerCollection();
  handlers.setHandlers(new Handler[]{context, requestLogHandler});

  return handlers;
}
 

public void start() {
        log.info("Starting REST server");
        ResourceConfig resourceConfig = new ResourceConfig();
        resourceConfig.register(DataxResource.class);

        ServletContainer servletContainer = new ServletContainer(resourceConfig);
        ServletHolder servletHolder = new ServletHolder(servletContainer);

        ServletContextHandler context = new ServletContextHandler(ServletContextHandler.SESSIONS);
        context.setContextPath("/");
        context.addServlet(servletHolder, "/*");

        String allowedOrigins = System.getProperty(ACCESS_CONTROL_ALLOW_ORIGIN_CONFIG);
        if (allowedOrigins != null && !allowedOrigins.trim().isEmpty()) {
            FilterHolder filterHolder = new FilterHolder(new CrossOriginFilter());
            filterHolder.setName("cross-origin");
        filterHolder.setInitParameter(CrossOriginFilter.ALLOWED_ORIGINS_PARAM, allowedOrigins);
        String allowedMethods = System.getProperty(ACCESS_CONTROL_ALLOW_METHODS_CONFIG);
        if (allowedMethods != null && !allowedOrigins.trim().isEmpty()) {
            filterHolder.setInitParameter(CrossOriginFilter.ALLOWED_METHODS_PARAM, allowedMethods);
        }
            context.addFilter(filterHolder, "/*", EnumSet.of(DispatcherType.REQUEST));
    }

    RequestLogHandler requestLogHandler = new RequestLogHandler();
    Slf4jRequestLog requestLog = new Slf4jRequestLog();
    requestLog.setLoggerName(RestServer.class.getCanonicalName());
    requestLog.setLogLatency(true);
    requestLogHandler.setRequestLog(requestLog);


    HandlerCollection handlers = new HandlerCollection();
    handlers.setHandlers(new Handler[]{context, new DefaultHandler(), requestLogHandler});

    /* Needed for graceful shutdown as per `setStopTimeout` documentation */
    StatisticsHandler statsHandler = new StatisticsHandler();
    statsHandler.setHandler(handlers);
    jettyServer.setHandler(statsHandler);
    jettyServer.setStopTimeout(GRACEFUL_SHUTDOWN_TIMEOUT_MS);
    jettyServer.setStopAtShutdown(true);

    try {
        jettyServer.start();
    } catch (Exception e) {
        throw new RuntimeException("Unable to start REST server", e);
    }

    log.info("REST server listening at " + jettyServer.getURI() + ", advertising URL " + advertisedUrl());
}