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

Example 26 with AtmosphereResponse

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

the class AbstractReflectorAtmosphereHandler method onStateChange.

/**
 * Write the {@link AtmosphereResourceEvent#getMessage()} back to the client using
 * the {@link AtmosphereResponseImpl#getOutputStream()} or {@link AtmosphereResponseImpl#getWriter()}.
 * If a {@link org.atmosphere.cpr.Serializer} is defined, it will be invoked and the write operation
 * will be delegated to it.
 * <p/>
 * By default, this method will try to use {@link AtmosphereResponseImpl#getWriter()}.
 *
 * @param event the {@link AtmosphereResourceEvent#getMessage()}
 * @throws java.io.IOException
 */
@Override
public void onStateChange(AtmosphereResourceEvent event) throws IOException {
    Object message = event.getMessage();
    AtmosphereResource resource = event.getResource();
    AtmosphereResponse r = resource.getResponse();
    AtmosphereRequest request = resource.getRequest();
    boolean writeAsBytes = IOUtils.isBodyBinary(request);
    if (message == null) {
        logger.trace("Message was null for AtmosphereEvent {}", event);
        return;
    }
    if (resource.getSerializer() != null) {
        try {
            if (message instanceof List) {
                for (Object s : (List<Object>) message) {
                    resource.getSerializer().write(resource.getResponse().getOutputStream(), s);
                }
            } else {
                resource.getSerializer().write(resource.getResponse().getOutputStream(), message);
            }
        } catch (Throwable ex) {
            logger.warn("Serializer exception: message: {}", message, ex);
            throw new IOException(ex);
        }
    } else {
        boolean isUsingStream = true;
        Object o = resource.getRequest().getAttribute(PROPERTY_USE_STREAM);
        if (o != null) {
            isUsingStream = (Boolean) o;
        }
        if (!isUsingStream) {
            try {
                r.getWriter();
            } catch (IllegalStateException e) {
                isUsingStream = true;
            }
            if (writeAsBytes) {
                throw new IllegalStateException("Cannot write bytes using PrintWriter");
            }
        }
        if (message instanceof List) {
            Iterator<Object> i = ((List) message).iterator();
            try {
                Object s;
                while (i.hasNext()) {
                    s = i.next();
                    if (String.class.isAssignableFrom(s.getClass())) {
                        if (isUsingStream) {
                            r.getOutputStream().write(s.toString().getBytes(r.getCharacterEncoding()));
                        } else {
                            r.getWriter().write(s.toString());
                        }
                    } else if (byte[].class.isAssignableFrom(s.getClass())) {
                        if (isUsingStream) {
                            r.getOutputStream().write((byte[]) s);
                        } else {
                            r.getWriter().write(s.toString());
                        }
                    } else {
                        if (isUsingStream) {
                            r.getOutputStream().write(s.toString().getBytes(r.getCharacterEncoding()));
                        } else {
                            r.getWriter().write(s.toString());
                        }
                    }
                    i.remove();
                }
            } catch (IOException ex) {
                event.setMessage(new ArrayList<String>().addAll((List) message));
                throw ex;
            }
            if (isUsingStream) {
                r.getOutputStream().flush();
            } else {
                r.getWriter().flush();
            }
        } else {
            if (isUsingStream) {
                r.getOutputStream().write(writeAsBytes ? (byte[]) message : message.toString().getBytes(r.getCharacterEncoding()));
                r.getOutputStream().flush();
            } else {
                r.getWriter().write(message.toString());
                r.getWriter().flush();
            }
        }
    }
    postStateChange(event);
}

Example 27 with AtmosphereResponse

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

the class SimpleRestInterceptor method inspect.

@Override
public Action inspect(final AtmosphereResource r) {
    if (AtmosphereResource.TRANSPORT.WEBSOCKET != r.transport() && AtmosphereResource.TRANSPORT.SSE != r.transport() && AtmosphereResource.TRANSPORT.POLLING != r.transport()) {
        LOG.debug("Skipping for non websocket 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.debug("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.debug("Registrering suspended resource: {}", srid);
            suspendedResponses.put(srid, event.getResource().getResponse());
            AsyncIOWriter writer = event.getResource().getResponse().getAsyncIOWriter();
            if (writer == null) {
                writer = new AtmosphereInterceptorWriter();
                r.getResponse().asyncIOWriter(writer);
            }
            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.debug("Unregistrering suspended resource: {}", srid);
            suspendedResponses.remove(srid);
        }
    });
    AtmosphereRequest request = r.getRequest();
    if (request.getAttribute(REQUEST_DISPATCHED) == null) {
        try {
            // REVISIT use a more efficient approach for the detached mode (i.e.,avoid reading the message into a string)
            // read the message entity and dispatch a service call
            String body = IOUtils.readEntirelyAsString(r).toString();
            LOG.debug("Request message: '{}'", body);
            if (body.length() == 0) {
                // TODO we might want to move this heartbeat scheduling after the handshake phase (if that is added)
                if ((AtmosphereResource.TRANSPORT.WEBSOCKET == r.transport() || AtmosphereResource.TRANSPORT.SSE == r.transport()) && request.getAttribute(HEARTBEAT_SCHEDULED) == null) {
                    r.suspend();
                    scheduleHeartbeat(r);
                    request.setAttribute(HEARTBEAT_SCHEDULED, "true");
                    return Action.SUSPEND;
                }
                return Action.CANCELLED;
            }
            AtmosphereRequest ar = createAtmosphereRequest(request, body);
            if (ar == null) {
                return Action.CANCELLED;
            }
            AtmosphereResponse response = r.getResponse();
            ar.localAttributes().put(REQUEST_DISPATCHED, "true");
            request.removeAttribute(FrameworkConfig.INJECTED_ATMOSPHERE_RESOURCE);
            response.request(ar);
            attachWriter(r);
            Action action = r.getAtmosphereConfig().framework().doCometSupport(ar, response);
            if (action.type() == Action.TYPE.SUSPEND) {
                ar.destroyable(false);
                response.destroyable(false);
            }
            return Action.CANCELLED;
        } catch (IOException | ServletException e) {
            LOG.error("Failed to process", e);
        }
    }
    return Action.CONTINUE;
}

Example 28 with AtmosphereResponse

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

the class TrackMessageSizeInterceptor method inspect.

@Override
public Action inspect(final AtmosphereResource r) {
    if (AtmosphereResource.TRANSPORT.UNDEFINED == r.transport() || Utils.webSocketMessage(r))
        return Action.CONTINUE;
    final AtmosphereResponse response = r.getResponse();
    super.inspect(r);
    AsyncIOWriter writer = response.getAsyncIOWriter();
    if (AtmosphereInterceptorWriter.class.isAssignableFrom(writer.getClass())) {
        ((AtmosphereInterceptorWriter) writer).interceptor(interceptor);
    } else {
        logger.warn("Unable to apply {}. Your AsyncIOWriter must implement {}", getClass().getName(), AtmosphereInterceptorWriter.class.getName());
    }
    return Action.CONTINUE;
}

Example 29 with AtmosphereResponse

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

the class DefaultProtocolInterceptorTest method testCreateResponseWithHeadersFiltering.

@Test
public void testCreateResponseWithHeadersFiltering() throws Exception {
    DefaultProtocolInterceptor dpi = new DefaultProtocolInterceptor();
    AtmosphereRequest request = AtmosphereRequestImpl.newInstance();
    AtmosphereResponse response = AtmosphereResponseImpl.newInstance();
    AtmosphereResourceImpl resource = new AtmosphereResourceImpl();
    resource.transport(AtmosphereResource.TRANSPORT.WEBSOCKET);
    request.localAttributes().put(FrameworkConfig.ATMOSPHERE_RESOURCE, resource);
    response.request(request);
    String payload = "hello cxf";
    String contentType = "text/plain";
    response.headers().put("Content-Type", contentType);
    byte[] transformed = dpi.createResponse(response, payload.getBytes(), true);
    verifyTransformed("200", new String[] { "Content-Type", contentType }, payload, transformed);
    response.headers().put("X-fruit", "peach");
    response.headers().put("X-vegetable", "tomato");
    transformed = dpi.createResponse(response, payload.getBytes(), true);
    verifyTransformed("200", new String[] { "Content-Type", contentType }, payload, transformed);
    dpi.includedheaders("X-f.*");
    transformed = dpi.createResponse(response, payload.getBytes(), true);
    verifyTransformed("200", new String[] { "Content-Type", contentType, "X-Fruit", "peach" }, payload, transformed);
    dpi.includedheaders("X-.*");
    transformed = dpi.createResponse(response, payload.getBytes(), true);
    verifyTransformed("200", new String[] { "Content-Type", contentType, "X-Fruit", "peach", "X-vegetable", "tomato" }, payload, transformed);
    dpi.excludedheaders(".*able");
    transformed = dpi.createResponse(response, payload.getBytes(), true);
    verifyTransformed("200", new String[] { "Content-Type", contentType, "X-Fruit", "peach" }, payload, transformed);
}