protected void doGet()

in runtime/local_jetty12_ee10/src/main/java/com/google/appengine/tools/development/jetty/ee10/LocalResourceFileServlet.java [114:208]
79 lines of code
24 McCabe index (conditional complexity)

  protected void doGet(HttpServletRequest request, HttpServletResponse response)
      throws ServletException, IOException {
    String servletPath;
    String pathInfo;

    AppEngineWebXml appEngineWebXml = (AppEngineWebXml) getServletContext().getAttribute(
        "com.google.appengine.tools.development.appEngineWebXml");

    WebXml webXml = (WebXml) getServletContext().getAttribute(
        "com.google.appengine.tools.development.webXml");

    Boolean forwarded = request.getAttribute(__FORWARD_JETTY) != null;
    if (forwarded == null) {
      forwarded = Boolean.FALSE;
    }

    Boolean included = request.getAttribute(__INCLUDE_JETTY) != null;
    if (included != null && included) {
      servletPath = (String) request.getAttribute(__INCLUDE_SERVLET_PATH);
      pathInfo = (String) request.getAttribute(__INCLUDE_PATH_INFO);
      if (servletPath == null) {
        servletPath = request.getServletPath();
        pathInfo = request.getPathInfo();
      }
    } else {
      included = Boolean.FALSE;
      servletPath = request.getServletPath();
      pathInfo = request.getPathInfo();
    }

    String pathInContext = URIUtil.addPaths(servletPath, pathInfo);

    if (maybeServeWelcomeFile(pathInContext, included, request, response)) {
      // We served a welcome file (either via redirecting, forwarding, or including).
      return;
    }

    // Find the resource
    Resource resource = null;
    try {
      resource = getResource(pathInContext);

      // Handle resource
      if (resource != null && resource.isDirectory()) {
        if (included || staticFileUtils.passConditionalHeaders(request, response, resource)) {
          response.sendError(HttpServletResponse.SC_FORBIDDEN);
        }
      } else {
        if (resource == null || !resource.exists()) {
          logger.warning("No file found for: " + pathInContext);
          response.sendError(HttpServletResponse.SC_NOT_FOUND);
        } else {
          boolean isStatic = appEngineWebXml.includesStatic(resourceRoot + pathInContext);
          boolean isResource = appEngineWebXml.includesResource(
              resourceRoot + pathInContext);
          boolean usesRuntime = webXml.matches(pathInContext);
          Boolean isWelcomeFile = (Boolean)
              request.getAttribute("com.google.appengine.tools.development.isWelcomeFile");
          if (isWelcomeFile == null) {
            isWelcomeFile = false;
          }

          if (!isStatic && !usesRuntime && !(included || forwarded)) {
            logger.warning(
                "Can not serve "
                    + pathInContext
                    + " directly.  "
                    + "You need to include it in <static-files> in your "
                    + "appengine-web.xml.");
            response.sendError(HttpServletResponse.SC_NOT_FOUND);
            return;
          } else if (!isResource && !isWelcomeFile && (included || forwarded)) {
            logger.warning(
                "Could not serve "
                    + pathInContext
                    + " from a forward or "
                    + "include.  You need to include it in <resource-files> in "
                    + "your appengine-web.xml.");
            response.sendError(HttpServletResponse.SC_NOT_FOUND);
            return;
          }
          // passConditionalHeaders will set response headers, and
          // return true if we also need to send the content.
          if (included || staticFileUtils.passConditionalHeaders(request, response, resource)) {
            staticFileUtils.sendData(request, response, included, resource);
          }
        }
      }
    } finally {
      if (resource != null) {
        // TODO: how to release
        // resource.release();
      }
    }
  }