001/*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018package org.apache.hadoop.hbase.rest;
019
020import java.io.IOException;
021
022import javax.servlet.Filter;
023import javax.servlet.FilterChain;
024import javax.servlet.FilterConfig;
025import javax.servlet.ServletException;
026import javax.servlet.ServletRequest;
027import javax.servlet.ServletResponse;
028import javax.servlet.http.HttpServletRequest;
029import javax.servlet.http.HttpServletResponse;
030
031import org.slf4j.Logger;
032import org.slf4j.LoggerFactory;
033
034public class DummyFilter implements Filter {
035  private static final Logger LOG = LoggerFactory.getLogger(DummyFilter.class);
036
037  @Override
038  public void destroy() {
039  }
040
041  @Override
042  public void doFilter(ServletRequest paramServletRequest, ServletResponse paramServletResponse,
043      FilterChain paramFilterChain) throws IOException, ServletException {
044    if (paramServletRequest instanceof HttpServletRequest
045        && paramServletResponse instanceof HttpServletResponse) {
046      HttpServletRequest request = (HttpServletRequest) paramServletRequest;
047      HttpServletResponse response = (HttpServletResponse) paramServletResponse;
048
049      String path = request.getRequestURI();
050      LOG.info(path);
051      if (path.indexOf("/status/cluster") >= 0) {
052        LOG.info("Blocking cluster status request");
053        response.sendError(HttpServletResponse.SC_NOT_FOUND, "Cluster status cannot be requested.");
054      } else {
055        paramFilterChain.doFilter(request, response);
056      }
057    }
058  }
059
060  @Override
061  public void init(FilterConfig filterChain) throws ServletException {
062  }
063
064}