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;
021import javax.servlet.Filter;
022import javax.servlet.FilterChain;
023import javax.servlet.FilterConfig;
024import javax.servlet.ServletException;
025import javax.servlet.ServletRequest;
026import javax.servlet.ServletResponse;
027import javax.servlet.http.HttpServletRequest;
028import javax.servlet.http.HttpServletResponse;
029import org.slf4j.Logger;
030import org.slf4j.LoggerFactory;
031
032public class DummyFilter implements Filter {
033  private static final Logger LOG = LoggerFactory.getLogger(DummyFilter.class);
034
035  @Override
036  public void destroy() {
037  }
038
039  @Override
040  public void doFilter(ServletRequest paramServletRequest, ServletResponse paramServletResponse,
041    FilterChain paramFilterChain) throws IOException, ServletException {
042    if (
043      paramServletRequest instanceof HttpServletRequest
044        && paramServletResponse instanceof HttpServletResponse
045    ) {
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}