Examples with AsyncIOWriter org.atmosphere.cpr.AsyncIOWriter used on opensource projects

Example 1 with AsyncIOWriter

use of org.atmosphere.cpr.AsyncIOWriter in project atmosphere-play by Atmosphere.

the class PlayAsyncIOWriter method transform.

protected byte[] transform(AtmosphereResponse response, byte[] b, int offset, int length) throws IOException {
    AsyncIOWriter a = response.getAsyncIOWriter();
    try {
        response.asyncIOWriter(buffer);
        invokeInterceptor(response, b, offset, length);
        return buffer.stream().toByteArray();
    } finally {
        buffer.close(null);
        response.asyncIOWriter(a);
    }
}

Example 2 with AsyncIOWriter

use of org.atmosphere.cpr.AsyncIOWriter in project cxf by apache.

the class DefaultProtocolInterceptor method attachWriter.

private void attachWriter(final AtmosphereResource r) {
    AtmosphereResponse res = r.getResponse();
    AsyncIOWriter writer = res.getAsyncIOWriter();
    if (writer instanceof AtmosphereInterceptorWriter) {
        AtmosphereInterceptorWriter.class.cast(writer).interceptor(interceptor, 0);
    }
}

Example 3 with AsyncIOWriter

use of org.atmosphere.cpr.AsyncIOWriter in project cxf by apache.

the class DefaultProtocolInterceptor method inspect.

@Override
public Action inspect(final AtmosphereResource r) {
    LOG.log(Level.FINE, "inspect");
    if (AtmosphereResource.TRANSPORT.WEBSOCKET != r.transport() && AtmosphereResource.TRANSPORT.SSE != r.transport() && AtmosphereResource.TRANSPORT.POLLING != r.transport()) {
        LOG.fine("Skipping ignorable request");
        return Action.CONTINUE;
    }
    if (AtmosphereResource.TRANSPORT.POLLING == r.transport()) {
        final String saruuid = (String) r.getRequest().getAttribute(ApplicationConfig.SUSPENDED_ATMOSPHERE_RESOURCE_UUID);
        final AtmosphereResponse suspendedResponse = suspendedResponses.get(saruuid);
        LOG.fine("Attaching a proxy writer to suspended response");
        r.getResponse().asyncIOWriter(new AtmosphereInterceptorWriter() {

            @Override
            public AsyncIOWriter write(AtmosphereResponse r, String data) throws IOException {
                suspendedResponse.write(data);
                suspendedResponse.flushBuffer();
                return this;
            }

            @Override
            public AsyncIOWriter write(AtmosphereResponse r, byte[] data) throws IOException {
                suspendedResponse.write(data);
                suspendedResponse.flushBuffer();
                return this;
            }

            @Override
            public AsyncIOWriter write(AtmosphereResponse r, byte[] data, int offset, int length) throws IOException {
                suspendedResponse.write(data, offset, length);
                suspendedResponse.flushBuffer();
                return this;
            }

            @Override
            public void close(AtmosphereResponse response) throws IOException {
            }
        });
        // REVISIT we need to keep this response's asyncwriter alive so that data can be written to the
        // suspended response, but investigate if there is a better alternative.
        r.getResponse().destroyable(false);
        return Action.CONTINUE;
    }
    r.addEventListener(new AtmosphereResourceEventListenerAdapter() {

        @Override
        public void onSuspend(AtmosphereResourceEvent event) {
            final String srid = (String) event.getResource().getRequest().getAttribute(ApplicationConfig.SUSPENDED_ATMOSPHERE_RESOURCE_UUID);
            LOG.log(Level.FINE, "Registrering suspended resource: {}", srid);
            suspendedResponses.put(srid, event.getResource().getResponse());
            AsyncIOWriter writer = event.getResource().getResponse().getAsyncIOWriter();
            if (writer instanceof AtmosphereInterceptorWriter) {
                ((AtmosphereInterceptorWriter) writer).interceptor(interceptor);
            }
        }

        @Override
        public void onDisconnect(AtmosphereResourceEvent event) {
            super.onDisconnect(event);
            final String srid = (String) event.getResource().getRequest().getAttribute(ApplicationConfig.SUSPENDED_ATMOSPHERE_RESOURCE_UUID);
            LOG.log(Level.FINE, "Unregistrering suspended resource: {}", srid);
            suspendedResponses.remove(srid);
        }
    });
    AtmosphereRequest request = r.getRequest();
    if (request.getAttribute(REQUEST_DISPATCHED) == null) {
        AtmosphereResponse response = null;
        AtmosphereFramework framework = r.getAtmosphereConfig().framework();
        try {
            byte[] data = WebSocketUtils.readBody(request.getInputStream());
            if (data.length == 0) {
                if (AtmosphereResource.TRANSPORT.WEBSOCKET == r.transport() || AtmosphereResource.TRANSPORT.SSE == r.transport()) {
                    r.suspend();
                    return Action.SUSPEND;
                }
                return Action.CANCELLED;
            }
            if (LOG.isLoggable(Level.FINE)) {
                LOG.log(Level.FINE, "inspecting data {0}", new String(data));
            }
            try {
                AtmosphereRequest ar = createAtmosphereRequest(request, data);
                response = new WrappedAtmosphereResponse(r.getResponse(), ar);
                ar.localAttributes().put(REQUEST_DISPATCHED, "true");
                String refid = ar.getHeader(WebSocketConstants.DEFAULT_REQUEST_ID_KEY);
                if (refid != null) {
                    ar.localAttributes().put(WebSocketConstants.DEFAULT_REQUEST_ID_KEY, refid);
                }
                // This is a new request, we must clean the Websocket AtmosphereResource.
                request.removeAttribute(FrameworkConfig.INJECTED_ATMOSPHERE_RESOURCE);
                response.request(ar);
                attachWriter(r);
                Action action = framework.doCometSupport(ar, response);
                if (action.type() == Action.TYPE.SUSPEND) {
                    ar.destroyable(false);
                    response.destroyable(false);
                }
            } catch (Exception e) {
                LOG.log(Level.WARNING, "Error during request dispatching", e);
                if (response == null) {
                    response = new WrappedAtmosphereResponse(r.getResponse(), request);
                }
                if (e instanceof InvalidPathException) {
                    response.setIntHeader(WebSocketUtils.SC_KEY, 400);
                } else {
                    response.setIntHeader(WebSocketUtils.SC_KEY, 500);
                }
                OutputStream out = response.getOutputStream();
                out.write(createResponse(response, null, true));
                out.close();
            }
            return Action.CANCELLED;
        } catch (IOException e) {
            LOG.log(Level.WARNING, "Error during protocol processing", e);
        }
    } else {
        request.destroyable(false);
    }
    return Action.CONTINUE;
}

Example 4 with AsyncIOWriter

use of org.atmosphere.cpr.AsyncIOWriter in project atmosphere by Atmosphere.

the class SSEAtmosphereInterceptor method inspect.

@Override
public Action inspect(final AtmosphereResource r) {
    if (Utils.webSocketMessage(r))
        return Action.CONTINUE;
    final AtmosphereResponse response = r.getResponse();
    final AtmosphereRequest request = r.getRequest();
    String accept = request.getHeader("Accept") == null ? "text/plain" : request.getHeader("Accept").trim();
    if (r.transport().equals(AtmosphereResource.TRANSPORT.SSE) || contentType.equalsIgnoreCase(accept)) {
        super.inspect(r);
        r.addEventListener(new P(response));
        AsyncIOWriter writer = response.getAsyncIOWriter();
        if (AtmosphereInterceptorWriter.class.isAssignableFrom(writer.getClass())) {
            AtmosphereInterceptorWriter.class.cast(writer).interceptor(new AsyncIOInterceptorAdapter() {

                private boolean padding() {
                    if (!r.isSuspended()) {
                        return writePadding(response);
                    }
                    return false;
                }

                @Override
                public void prePayload(AtmosphereResponse response, byte[] data, int offset, int length) {
                    boolean noPadding = padding();
                    // In that case, we must pad/protocol indenendently of the state of the AtmosphereResource
                    if (!noPadding || r.getRequest().getAttribute(CALLBACK_JAVASCRIPT_PROTOCOL) != null) {
                        // write other meta info such as (id, event, etc)?
                        response.write(DATA, true);
                    }
                }

                @Override
                public byte[] transformPayload(AtmosphereResponse response, byte[] responseDraft, byte[] data) throws IOException {
                    boolean noPadding = padding();
                    // In that case, we must pad/protocol indenendently of the state of the AtmosphereResource
                    if (!noPadding || r.getRequest().getAttribute(CALLBACK_JAVASCRIPT_PROTOCOL) != null) {
                        if (isMultilineData(responseDraft)) {
                            // return a padded multiline-data
                            return encodeMultilineData(responseDraft);
                        }
                    }
                    return responseDraft;
                }

                @Override
                public void postPayload(AtmosphereResponse response, byte[] data, int offset, int length) {
                    // In that case, we must pad/protocol indenendently of the state of the AtmosphereResource
                    if (r.isSuspended() || r.getRequest().getAttribute(CALLBACK_JAVASCRIPT_PROTOCOL) != null || r.getRequest().getAttribute(CONTAINER_RESPONSE) != null) {
                        response.write(END, true);
                    }
                    /**
                     * When used with https://github.com/remy/polyfills/blob/master/EventSource.js , we
                     * resume after every message.
                     */
                    String ua = r.getRequest().getHeader("User-Agent");
                    if (ua != null && ua.contains("MSIE")) {
                        try {
                            response.flushBuffer();
                        } catch (IOException e) {
                            logger.trace("", e);
                        }
                        r.resume();
                    }
                }
            });
        } else {
            logger.warn("Unable to apply {}. Your AsyncIOWriter must implement {}", getClass().getName(), AtmosphereInterceptorWriter.class.getName());
        }
    }
    return Action.CONTINUE;
}

Example 5 with AsyncIOWriter

use of org.atmosphere.cpr.AsyncIOWriter in project atmosphere by Atmosphere.

the class EncoderDecoderTest method testEncoder.

@Test
public void testEncoder() throws IOException, ServletException, InterruptedException {
    AtmosphereRequest request = new AtmosphereRequestImpl.Builder().pathInfo("/h").method("GET").build();
    AtmosphereResponse response = AtmosphereResponseImpl.newInstance();
    final AtomicReference<String> ref = new AtomicReference();
    response.asyncIOWriter(new AsyncIOWriterAdapter() {

        @Override
        public AsyncIOWriter write(AtmosphereResponse r, byte[] data) throws IOException {
            ref.set(new String(data));
            return this;
        }
    });
    framework.doCometSupport(request, response);
    assertNotNull(r.get());
    latch.get().await(5, TimeUnit.SECONDS);
    r.get().resume();
    assertNotNull(message.get());
    assertEquals(message.get(), "message");
    assertEquals(ref.get(), "message-yo!");
}