@Override
    public void configurationUpdated(SystemModel configurationObject) {
      SystemModelInterrogator interrogator = new SystemModelInterrogator(ports);
      Optional<ReposeCluster> cluster = interrogator.getLocalCluster(configurationObject);
      Optional<Node> node = interrogator.getLocalNode(configurationObject);

      if (cluster.isPresent() && node.isPresent()) {
        localDomain = cluster.get();
        localHost = node.get();

        List<Destination> destinations = new ArrayList<>();

        destinations.addAll(localDomain.getDestinations().getEndpoint());
        destinations.addAll(localDomain.getDestinations().getTarget());
        for (Destination powerApiHost : destinations) {
          configuredHosts.put(powerApiHost.getId(), powerApiHost);
        }

        isInitialized = true;

        healthCheckServiceProxy.resolveIssue(SYSTEM_MODEL_CONFIG_HEALTH_REPORT);
      } else {
        LOG.error(
            "Unable to identify the local host in the system model - please check your system-model.cfg.xml");
        healthCheckServiceProxy.reportIssue(
            SYSTEM_MODEL_CONFIG_HEALTH_REPORT,
            "Unable to identify the "
                + "local host in the system model - please check your system-model.cfg.xml",
            Severity.BROKEN);
      }
    }
  @Override
  public void route(
      MutableHttpServletRequest servletRequest, MutableHttpServletResponse servletResponse)
      throws IOException, ServletException, URISyntaxException {
    DestinationLocation location = null;

    if (!StringUtilities.isBlank(defaultDst)) {
      servletRequest.addDestination(defaultDst, servletRequest.getRequestURI(), -1);
    }
    RouteDestination routingDestination = servletRequest.getDestination();
    String rootPath = "";

    if (routingDestination != null) {
      Destination configDestinationElement =
          destinations.get(routingDestination.getDestinationId());
      if (configDestinationElement == null) {
        LOG.warn(
            "Invalid routing destination specified: "
                + routingDestination.getDestinationId()
                + " for domain: "
                + domain.getId());
        ((HttpServletResponse) servletResponse).setStatus(HttpStatusCode.NOT_FOUND.intValue());
      } else {
        location =
            locationBuilder.build(
                configDestinationElement, routingDestination.getUri(), servletRequest);

        rootPath = configDestinationElement.getRootPath();
      }
    }

    if (location != null) {
      // According to the Java 6 javadocs the routeDestination passed into getContext:
      // "The given path [routeDestination] must begin with /, is interpreted relative to the
      // server's document root
      // and is matched against the context roots of other web applications hosted on this
      // container."
      final ServletContext targetContext = context.getContext(location.getUri().toString());

      if (targetContext != null) {
        // Capture this for Location header processing
        final HttpServletRequest originalRequest = (HttpServletRequest) servletRequest.getRequest();

        String uri =
            new DispatchPathBuilder(location.getUri().getPath(), targetContext.getContextPath())
                .build();
        final RequestDispatcher dispatcher = targetContext.getRequestDispatcher(uri);

        servletRequest.setRequestUrl(new StringBuffer(location.getUrl().toExternalForm()));
        servletRequest.setRequestUri(location.getUri().getPath());
        requestHeaderService.setVia(servletRequest);
        requestHeaderService.setXForwardedFor(servletRequest);
        if (dispatcher != null) {
          LOG.debug("Attempting to route to " + location.getUri());
          LOG.debug("Request URL: " + ((HttpServletRequest) servletRequest).getRequestURL());
          LOG.debug("Request URI: " + ((HttpServletRequest) servletRequest).getRequestURI());
          LOG.debug("Context path = " + targetContext.getContextPath());

          final long startTime = System.currentTimeMillis();
          try {
            reportingService.incrementRequestCount(routingDestination.getDestinationId());
            dispatcher.forward(servletRequest, servletResponse);
            final long stopTime = System.currentTimeMillis();
            reportingService.recordServiceResponse(
                routingDestination.getDestinationId(),
                servletResponse.getStatus(),
                (stopTime - startTime));
            responseHeaderService.fixLocationHeader(
                originalRequest,
                servletResponse,
                routingDestination,
                location.getUri().toString(),
                rootPath);
          } catch (ClientHandlerException e) {
            if (e.getCause() instanceof ReadLimitReachedException) {
              LOG.error("Error reading request content", e);
              servletResponse.sendError(
                  HttpStatusCode.REQUEST_ENTITY_TOO_LARGE.intValue(),
                  "Error reading request content");
              servletResponse.setLastException(e);
            } else {
              LOG.error("Connection Refused to " + location.getUri() + " " + e.getMessage(), e);
              ((HttpServletResponse) servletResponse)
                  .setStatus(HttpStatusCode.SERVICE_UNAVAIL.intValue());
            }
          }
        }
      }
    }
  }
 private void addDestinations(List<? extends Destination> destList) {
   for (Destination dest : destList) {
     destinations.put(dest.getId(), dest);
   }
 }