Package org.apache.camel.component.http

Examples of org.apache.camel.component.http.HttpConsumer

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        String reply = template.requestBody(serverUri, "World", String.class);
        assertEquals("Bye World", reply);

        // now suspend jetty
        HttpConsumer consumer = (HttpConsumer) context.getRoute("route1").getConsumer();
        assertNotNull(consumer);

        // suspend
        consumer.suspend();

        try {
            template.requestBody(serverUri, "Moon", String.class);
            fail("Should throw exception");
        } catch (Exception e) {
            HttpOperationFailedException cause = assertIsInstanceOf(HttpOperationFailedException.class, e.getCause());
            assertEquals(503, cause.getStatusCode());
        }

        // resume
        consumer.resume();

        // and send request which should be processed
        reply = template.requestBody(serverUri, "Moon", String.class);
        assertEquals("Bye Moon", reply);
    }
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        throw new UnsupportedOperationException("You cannot create producer with servlet endpoint, please consider to use http or http4 endpoint.");
    }

    @Override
    public Consumer createConsumer(Processor processor) throws Exception {
        return new HttpConsumer(this, processor);
    }
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        return super.createProducer();
    }

    @Override
    public Consumer createConsumer(Processor processor) throws Exception {
        return new HttpConsumer(this, processor);
    }
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        return super.createProducer();
    }

    @Override
    public Consumer createConsumer(Processor processor) throws Exception {
        return new HttpConsumer(this, processor);
    }
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        return answer;
    }

    @Override
    public Consumer createConsumer(Processor processor) throws Exception {
        return new HttpConsumer(this, processor);
    }  
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    @Override
    protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        try {
            // Is there a consumer registered for the request.
            HttpConsumer consumer = resolve(request);
            if (consumer == null) {
                response.sendError(HttpServletResponse.SC_NOT_FOUND);
                return;
            }

            final Continuation continuation = ContinuationSupport.getContinuation(request, null);
            if (continuation.isNew()) {
                // Have the camel process the HTTP exchange.
                // final DefaultExchange exchange = new DefaultExchange(consumer.getEndpoint(), ExchangePattern.InOut);
                // exchange.setProperty(HttpConstants.SERVLET_REQUEST, request);
                // exchange.setProperty(HttpConstants.SERVLET_RESPONSE, response);
                // exchange.setIn(new HttpMessage(exchange, request));
                // boolean sync = consumer.getAsyncProcessor().process(exchange, new AsyncCallback() {
                //     public void done(boolean sync) {
                //        if (sync) {
                //            return;
                //        }
                //        continuation.setObject(exchange);
                //        continuation.resume();
                //    }
                //});

                //if (!sync) {
                    // Wait for the exchange to get processed.
                    // This might block until it completes or it might return via an exception and
                    // then this method is re-invoked once the the exchange has finished processing
                //    continuation.suspend(0);
                //}

                // HC: The getBinding() is interesting because it illustrates the
                // impedance miss-match between HTTP's stream oriented protocol, and
                // Camels more message oriented protocol exchanges.

                // now lets output to the response
                //consumer.getBinding().writeResponse(exchange, response);
                return;
            }

            if (continuation.isResumed()) {
                Exchange exchange = (Exchange)continuation.getObject();
                // now lets output to the response
                consumer.getBinding().writeResponse(exchange, response);
                return;
            }
        } catch (Exception e) {
            throw new ServletException(e);
        }
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        return super.createProducer();
    }

    @Override
    public Consumer createConsumer(Processor processor) throws Exception {
        return new HttpConsumer(this, processor);
    }  
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    @Override
    protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        try {
            // Is there a consumer registered for the request.
            HttpConsumer consumer = resolve(request);
            if (consumer == null) {
                response.sendError(HttpServletResponse.SC_NOT_FOUND);
                return;
            }

            final Continuation continuation = ContinuationSupport.getContinuation(request, null);
            if (continuation.isNew()) {
                // Have the camel process the HTTP exchange.
                // final DefaultExchange exchange = new DefaultExchange(consumer.getEndpoint(), ExchangePattern.InOut);
                // exchange.setProperty(HttpConstants.SERVLET_REQUEST, request);
                // exchange.setProperty(HttpConstants.SERVLET_RESPONSE, response);
                // exchange.setIn(new HttpMessage(exchange, request));
                // boolean sync = consumer.getAsyncProcessor().process(exchange, new AsyncCallback() {
                //     public void done(boolean sync) {
                //        if (sync) {
                //            return;
                //        }
                //        continuation.setObject(exchange);
                //        continuation.resume();
                //    }
                //});

                //if (!sync) {
                    // Wait for the exchange to get processed.
                    // This might block until it completes or it might return via an exception and
                    // then this method is re-invoked once the the exchange has finished processing
                //    continuation.suspend(0);
                //}

                // HC: The getBinding() is interesting because it illustrates the
                // impedance miss-match between HTTP's stream oriented protocol, and
                // Camels more message oriented protocol exchanges.

                // now lets output to the response
                //consumer.getBinding().writeResponse(exchange, response);
                return;
            }

            if (continuation.isResumed()) {
                Exchange exchange = (Exchange)continuation.getObject();
                // now lets output to the response
                consumer.getBinding().writeResponse(exchange, response);
                return;
            }
        } catch (Exception e) {
            throw new ServletException(e);
        }
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        return super.createProducer();
    }

    @Override
    public Consumer createConsumer(Processor processor) throws Exception {
        return new HttpConsumer(this, processor);
    }
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    @Override
    protected void service(final HttpServletRequest request, final HttpServletResponse response) throws ServletException, IOException {
        log.trace("Service: {}", request);

        // is there a consumer registered for the request.
        HttpConsumer consumer = resolve(request);
        if (consumer == null) {
            response.sendError(HttpServletResponse.SC_NOT_FOUND);
            return;
        }

        if ("TRACE".equals(request.getMethod()) && !consumer.isTraceEnabled()) {
            response.sendError(HttpServletResponse.SC_METHOD_NOT_ALLOWED);
        }
       
        final Exchange result = (Exchange) request.getAttribute(EXCHANGE_ATTRIBUTE_NAME);
        if (result == null) {
            // no asynchronous result so leverage continuation
            final Continuation continuation = ContinuationSupport.getContinuation(request);
            if (continuation.isInitial() && continuationTimeout != null) {
                // set timeout on initial
                continuation.setTimeout(continuationTimeout);
            }

            // are we suspended and a request is dispatched initially?
            if (consumer.isSuspended() && continuation.isInitial()) {
                response.sendError(HttpServletResponse.SC_SERVICE_UNAVAILABLE);
                return;
            }

            if (continuation.isExpired()) {
                String id = (String) continuation.getAttribute(EXCHANGE_ATTRIBUTE_ID);
                // remember this id as expired
                expiredExchanges.put(id, id);
                log.warn("Continuation expired of exchangeId: {}", id);
                response.sendError(HttpServletResponse.SC_SERVICE_UNAVAILABLE);
                return;
            }

            // a new request so create an exchange
            final Exchange exchange = new DefaultExchange(consumer.getEndpoint(), ExchangePattern.InOut);
            if (consumer.getEndpoint().isBridgeEndpoint()) {
                exchange.setProperty(Exchange.SKIP_GZIP_ENCODING, Boolean.TRUE);
            }
            if (consumer.getEndpoint().isDisableStreamCache()) {
                exchange.setProperty(Exchange.DISABLE_HTTP_STREAM_CACHE, Boolean.TRUE);
            }
           
            HttpHelper.setCharsetFromContentType(request.getContentType(), exchange);
            exchange.setIn(new HttpMessage(exchange, request, response));

            log.trace("Suspending continuation of exchangeId: {}", exchange.getExchangeId());
            continuation.setAttribute(EXCHANGE_ATTRIBUTE_ID, exchange.getExchangeId());
            // must suspend before we process the exchange
            continuation.suspend();

            ClassLoader oldTccl = overrideTccl(exchange);
           
            log.trace("Processing request for exchangeId: {}", exchange.getExchangeId());
            // use the asynchronous API to process the exchange
           
            consumer.getAsyncProcessor().process(exchange, new AsyncCallback() {
                public void done(boolean doneSync) {
                    // check if the exchange id is already expired
                    boolean expired = expiredExchanges.remove(exchange.getExchangeId()) != null;
                    if (!expired) {
                        log.trace("Resuming continuation of exchangeId: {}", exchange.getExchangeId());
                        // resume processing after both, sync and async callbacks
                        continuation.setAttribute(EXCHANGE_ATTRIBUTE_NAME, exchange);
                        continuation.resume();
                    } else {
                        log.warn("Cannot resume expired continuation of exchangeId: {}", exchange.getExchangeId());
                    }
                }
            });

            if (oldTccl != null) {
                restoreTccl(exchange, oldTccl);
            }
           
            // return to let Jetty continuation to work as it will resubmit and invoke the service
            // method again when its resumed
            return;
        }

        try {
            log.trace("Resumed continuation and writing response for exchangeId: {}", result.getExchangeId());
            // now lets output to the response
            consumer.getBinding().writeResponse(result, response);
        } catch (IOException e) {
            log.error("Error processing request", e);
            throw e;
        } catch (Exception e) {
            log.error("Error processing request", e);
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