Examples with Route org.apache.camel.Route used on opensource projects

Example 91 with Route

use of org.apache.camel.Route in project ddf by codice.

the class HttpProxyCamelHttpTransportServlet method doService.

@Override
protected void doService(HttpServletRequest oldRequest, HttpServletResponse response) throws ServletException, IOException {
    // Wrap request and clean the query String
    HttpProxyWrappedCleanRequest request = new HttpProxyWrappedCleanRequest(oldRequest);
    log.trace("Service: {}", LogSanitizer.sanitize(request));
    // Is there a consumer registered for the request.
    HttpConsumer consumer = resolve(request);
    if (consumer == null) {
        String path = request.getPathInfo();
        log.trace("Service Request Path = {}", LogSanitizer.sanitize(path));
        String endpointName = getEndpointNameFromPath(path);
        log.trace("Endpoint Name = {}", LogSanitizer.sanitize(endpointName));
        Route route = camelContext.getRoute(endpointName);
        try {
            if (route != null) {
                connect((HttpConsumer) route.getConsumer());
            }
        } catch (Exception e) {
            log.debug("Exception while creating consumer", e);
        }
        consumer = resolve(request);
    }
    try {
        if (consumer == null) {
            log.debug("No consumer to service request {}", LogSanitizer.sanitize(request));
            response.sendError(HttpServletResponse.SC_NOT_FOUND);
            return;
        }
        // are we suspended?
        if (consumer.getEndpoint().isSuspended()) {
            log.debug("Consumer suspended, cannot service request {}", LogSanitizer.sanitize(request));
            response.sendError(HttpServletResponse.SC_SERVICE_UNAVAILABLE);
            return;
        }
        if (consumer.getEndpoint().getHttpMethodRestrict() != null && !consumer.getEndpoint().getHttpMethodRestrict().equals(request.getMethod())) {
            response.sendError(HttpServletResponse.SC_METHOD_NOT_ALLOWED);
            return;
        }
        if ("TRACE".equals(request.getMethod()) && !consumer.getEndpoint().isTraceEnabled()) {
            response.sendError(HttpServletResponse.SC_METHOD_NOT_ALLOWED);
            return;
        }
    } catch (IOException e) {
        LOGGER.warn("Could not send error due to: {}", e.getMessage());
        LOGGER.debug("Could not send error due to: ", e);
    }
    if (consumer == null) {
        return;
    }
    // create exchange and set data on it
    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);
    }
    // we override the classloader before building the HttpMessage just in case the binding
    // does some class resolution
    ClassLoader oldTccl = overrideTccl(exchange);
    HttpHelper.setCharsetFromContentType(request.getContentType(), exchange);
    exchange.setIn(new HttpMessage(exchange, consumer.getEndpoint(), request, response));
    // set context path as header
    String contextPath = consumer.getEndpoint().getPath();
    exchange.getIn().setHeader("CamelServletContextPath", contextPath);
    String httpPath = (String) exchange.getIn().getHeader(Exchange.HTTP_PATH);
    // here we just remove the CamelServletContextPath part from the HTTP_PATH
    if (contextPath != null && httpPath.startsWith(contextPath)) {
        exchange.getIn().setHeader(Exchange.HTTP_PATH, httpPath.substring(contextPath.length()));
    }
    // we want to handle the UoW
    try {
        consumer.createUoW(exchange);
    } catch (Exception e) {
        log.debug(PROCESSING_ERROR_MSG, e);
        throw new ServletException(e);
    }
    try {
        if (log.isTraceEnabled()) {
            log.trace("Processing request for exchangeId: {}", exchange.getExchangeId());
        }
        // process the exchange
        consumer.getProcessor().process(exchange);
    } catch (Exception e) {
        exchange.setException(e);
    }
    try {
        // now lets output to the response
        if (log.isTraceEnabled()) {
            log.trace("Writing response for exchangeId: {}", exchange.getExchangeId());
        }
        Integer bs = consumer.getEndpoint().getResponseBufferSize();
        if (bs != null) {
            log.trace("Using response buffer size: {}", bs);
            response.setBufferSize(bs);
        }
        consumer.getBinding().writeResponse(exchange, response);
    } catch (IOException e) {
        log.debug(PROCESSING_ERROR_MSG, e);
        throw e;
    } catch (Exception e) {
        log.debug(PROCESSING_ERROR_MSG, e);
        throw new ServletException(e);
    } finally {
        consumer.doneUoW(exchange);
        restoreTccl(exchange, oldTccl);
    }
}