package org.apache.maven.wagon.tck.http.fixture;
   
   /*
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF licenses this file
    * to you 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.
   */
  
  import java.io.IOException;
  
  import javax.servlet.ServletException;
  import javax.servlet.http.HttpServlet;
  import javax.servlet.http.HttpServletRequest;
  import javax.servlet.http.HttpServletResponse;
  
  public class RedirectionServlet
      extends HttpServlet
  {
  
      private static final long serialVersionUID = 1L;
  
      private final String targetPath;
  
      private final int code;
  
      private final int maxRedirects;
  
      private int redirectCount = 0;
  
      private final String myPath;
  
      public RedirectionServlet( final int code, final String path )
      {
          this.code = code;
          this.targetPath = path;
          this.maxRedirects = 1;
          this.myPath = null;
      }
  
      public RedirectionServlet( final int code, final String myPath, final String targetPath, final int maxRedirects )
      {
          this.code = code;
          this.myPath = myPath;
          this.targetPath = targetPath;
          this.maxRedirects = maxRedirects;
      }
  
      public int getRedirectCount()
      {
          return redirectCount;
      }
  
      @Override
      protected void service( final HttpServletRequest req, final HttpServletResponse resp )
          throws ServletException, IOException
      {
          redirectCount++;
  
          if ( myPath == null )
          {
              resp.setStatus( code );
              resp.setHeader( "Location", targetPath );
          }
          else if ( maxRedirects < 0 )
          {
              resp.setStatus( code );
              resp.setHeader( "Location", myPath );
          }
          else if ( redirectCount <= maxRedirects )
          {
              resp.setStatus( code );
              resp.setHeader( "Location", myPath );
          }
          else
          {
              resp.setStatus( code );
              resp.setHeader( "Location", targetPath );
          }
      }
  
  }