InitServlet.java

/**
 * Copyright 2015 Google Inc. All Rights Reserved.
 * 
 * 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
 * 
 *      http://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.tests.usercode.testservlets;

import java.io.IOException;
import java.util.logging.Logger;

import javax.servlet.ServletConfig;
import javax.servlet.ServletContext;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * {@link HttpServlet} for testing initialization.
 */
public class InitServlet extends HttpServlet {
  private static final Logger LOG = Logger.getLogger(InitServlet.class.getName());

  ServletContext servletContext;

  @Override
  public void init(ServletConfig config) {
    servletContext = config.getServletContext();
    TestServletContextListener.addBackEndServiceInfoToServletContext(
        "InitServlet.init", servletContext);
  }

  @Override
  public void doGet(HttpServletRequest req, HttpServletResponse res) throws IOException {
    String attributeName = req.getParameter("attribute");
    if (attributeName == null) {
      res.sendError(400, "You must provide an attribute parameter");
    } else {
      res.getWriter().print(attributeName + "=" + servletContext.getAttribute(attributeName));
    }
  }
}