Examples of AtmosphereHandler

org.atmosphere.cpr.AtmosphereHandler

Implementation of {@link AtmosphereHandler} allows creation ofevent-driven web applications which are hosted in the browser. An {@link AtmosphereHandler} allows a web application to suspend and resumean http response. An http response can be suspended {@link AtmosphereResource#suspend()}and later resume via {@link AtmosphereResource#resume()}. Messages can also be shared between suspended response and their associated {@link AtmosphereHandler}using a {@link Broadcaster}. Any invocation of {@link Broadcaster#broadcast(java.lang.Object)}will allow a suspended response to write the content of the message {@link AtmosphereHandler#onStateChange(org.atmosphere.cpr.AtmosphereResourceEvent)}.

A class implementing {@link AtmosphereHandler} must be thread safe

For example, a simple Chat based AtmosphereHandler will take the form of

  public AtmosphereResource<HttpServletRequest, HttpServletResponse> onRequest(AtmosphereResource<HttpServletRequest, HttpServletResponse> event) throws IOException { HttpServletRequest req = event.getRequest(); HttpServletResponse res = event.getResponse(); 
 res.setContentType("text/html"); res.addHeader("Cache-Control", "private"); res.addHeader("Pragma", "no-cache"); if (req.getMethod().equalsIgnoreCase("GET")) { event.suspend(); } else if (req.getMethod().equalsIgnoreCase("POST")) { res.setCharacterEncoding("UTF-8"); String action = req.getParameterValues("action")[0]; String name = req.getParameterValues("name")[0]; 
 if ("login".equals(action)) { event.getBroadcaster().broadcast( BEGIN_SCRIPT_TAG + toJsonp("System Message from " + event.getWebServerName(), name + " has joined.") + END_SCRIPT_TAG); res.getWriter().write("success"); res.getWriter().flush(); } else if ("post".equals(action)) { String message = req.getParameterValues("message")[0]; event.getBroadcaster().broadcast(BEGIN_SCRIPT_TAG + toJsonp(name, message) + END_SCRIPT_TAG); res.getWriter().write("success"); res.getWriter().flush(); } else { res.setStatus(422); 
 res.getWriter().write("success"); res.getWriter().flush(); } } } 
 public AtmosphereResource<HttpServletRequest, HttpServletResponse> onStateChange(AtmosphereResource<HttpServletRequest, HttpServletResponse> event) throws IOException { HttpServletRequest req = event.getRequest(); HttpServletResponse res = event.getResponse(); 
 if (event.isResuming() || event.isResumedOnTimedout()) { String script = BEGIN_SCRIPT_TAG + "window.parent.app.listen();\n" + END_SCRIPT_TAG; 
 res.getWriter().write(script); res.getWriter().flush(); } else { res.getWriter().write(event.getMessage().toString()); res.getWriter().flush(); } }

@author Jeanfrancois Arcand

Examples of org.atmosphere.cpr.AtmosphereHandler

    @Test
    public void status404FunctionTest() throws Exception {
        Config config = new Config.Builder()
                .port(port)
                .host("127.0.0.1")
                .resource("/suspend", new AtmosphereHandler() {


                    private final AtomicBoolean b = new AtomicBoolean(false);


                    @Override
                    public void onRequest(AtmosphereResource r) throws IOException {

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Examples of org.atmosphere.cpr.AtmosphereHandler

    @Test
    public void closedFireTest() throws Exception {
        Config config = new Config.Builder()
                .port(port)
                .host("127.0.0.1")
                .resource("/suspend", new AtmosphereHandler() {


                    @Override
                    public void onRequest(AtmosphereResource r) throws IOException {
                    }

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Examples of org.atmosphere.cpr.AtmosphereHandler

        final CountDownLatch l = new CountDownLatch(1);


        Config config = new Config.Builder()
                .port(port)
                .host("127.0.0.1")
                .resource("/suspend", new AtmosphereHandler() {


                    private final AtomicBoolean b = new AtomicBoolean(false);


                    @Override
                    public void onRequest(AtmosphereResource r) throws IOException {

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Examples of org.atmosphere.cpr.AtmosphereHandler

    @Test
    public void requestTimeoutTest() throws Exception {
        Config config = new Config.Builder()
                .port(port)
                .host("127.0.0.1")
                .resource("/suspend", new AtmosphereHandler() {


                    private final AtomicBoolean b = new AtomicBoolean(false);


                    @Override
                    public void onRequest(AtmosphereResource r) throws IOException {

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Examples of org.atmosphere.cpr.AtmosphereHandler

        final CountDownLatch l = new CountDownLatch(1);


        Config config = new Config.Builder()
                .port(port)
                .host("127.0.0.1")
                .resource("/suspend", new AtmosphereHandler() {


                    private final AtomicBoolean b = new AtomicBoolean(false);


                    @Override
                    public void onRequest(AtmosphereResource r) throws IOException {

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Examples of org.atmosphere.cpr.AtmosphereHandler

        final CountDownLatch l = new CountDownLatch(1);


        Config config = new Config.Builder()
                .port(port)
                .host("127.0.0.1")
                .resource("/suspend", new AtmosphereHandler() {


                    private final AtomicBoolean b = new AtomicBoolean(false);


                    @Override
                    public void onRequest(AtmosphereResource r) throws IOException {

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Examples of org.atmosphere.cpr.AtmosphereHandler

        final CountDownLatch l = new CountDownLatch(1);


        Config config = new Config.Builder()
                .port(port)
                .host("127.0.0.1")
                .resource("/suspend", new AtmosphereHandler() {


                    private final AtomicBoolean b = new AtomicBoolean(false);


                    @Override
                    public void onRequest(AtmosphereResource r) throws IOException {

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Examples of org.atmosphere.cpr.AtmosphereHandler

    @Test
    public void multipleFireBlockingTest() throws Exception {
        Config config = new Config.Builder()
                .port(port)
                .host("127.0.0.1")
                .resource("/suspend", new AtmosphereHandler() {


                    private final AtomicBoolean b = new AtomicBoolean(false);
                    private final AtomicInteger count = new AtomicInteger(2);
                    private final AtomicReference<StringBuffer> response = new AtomicReference<StringBuffer>(new StringBuffer());

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Examples of org.atmosphere.cpr.AtmosphereHandler

    @Test
    public void multipleFireTest() throws Exception {
        Config config = new Config.Builder()
                .port(port)
                .host("127.0.0.1")
                .resource("/suspend", new AtmosphereHandler() {


                    private final AtomicBoolean b = new AtomicBoolean(false);
                    private final AtomicInteger count = new AtomicInteger(2);
                    private final AtomicReference<StringBuffer> response = new AtomicReference<StringBuffer>(new StringBuffer());

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Examples of org.atmosphere.cpr.AtmosphereHandler

    @Test(enabled = false)
    public void basicLoadTest() throws IOException, InterruptedException {
        Config config = new Config.Builder()
                .port(port)
                .host("127.0.0.1")
                .resource("/", new AtmosphereHandler() {


                    @Override
                    public void onRequest(final AtmosphereResource r) throws IOException {
                        if (r.getRequest().getMethod().equalsIgnoreCase("GET")) {
                            r.addEventListener(new AtmosphereResourceEventListenerAdapter() {

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