com.google.apphosting.runtime.jetty.ee8.NamedDefaultServlet Maven / Gradle / Ivy

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/*
 * Copyright 2021 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.google.apphosting.runtime.jetty.ee8;

import java.io.IOException;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/** Servlet to handled named dispatches to "default" */
public class NamedDefaultServlet extends HttpServlet {
  RequestDispatcher dispatcher;

  @Override
  public void init() throws ServletException {
    dispatcher = getServletContext().getNamedDispatcher("_ah_default");
  }

  @Override
  protected void doGet(HttpServletRequest request, HttpServletResponse response)
      throws ServletException, IOException {
    if (dispatcher == null) {
      response.sendError(500);
    } else {
      boolean included = request.getAttribute(RequestDispatcher.INCLUDE_REQUEST_URI) != null;
      if (included) {
        dispatcher.include(request, response);
      } else {
        dispatcher.forward(request, response);
      }
    }
  }

  @Override
  protected void doPost(HttpServletRequest request, HttpServletResponse response)
      throws ServletException, IOException {
    doGet(request, response);
  }

  @Override
  protected void doTrace(HttpServletRequest request, HttpServletResponse response)
      throws ServletException, IOException {
    response.sendError(HttpServletResponse.SC_METHOD_NOT_ALLOWED);
  }
}