Line data    Source code

       1             : // Copyright (C) 2013 The Android Open Source Project
       2             : //
       3             : // Licensed under the Apache License, Version 2.0 (the "License");
       4             : // you may not use this file except in compliance with the License.
       5             : // You may obtain a copy of the License at
       6             : //
       7             : // http://www.apache.org/licenses/LICENSE-2.0
       8             : //
       9             : // Unless required by applicable law or agreed to in writing, software
      10             : // distributed under the License is distributed on an "AS IS" BASIS,
      11             : // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
      12             : // See the License for the specific language governing permissions and
      13             : // limitations under the License.
      14             : 
      15             : package com.google.gerrit.httpd;
      16             : 
      17             : import com.google.common.base.Strings;
      18             : import com.google.common.collect.ImmutableListMultimap;
      19             : import com.google.common.flogger.FluentLogger;
      20             : import com.google.gerrit.httpd.restapi.RestApiServlet;
      21             : import com.google.gerrit.server.documentation.QueryDocumentationExecutor;
      22             : import com.google.gerrit.server.documentation.QueryDocumentationExecutor.DocQueryException;
      23             : import com.google.gerrit.server.documentation.QueryDocumentationExecutor.DocResult;
      24             : import com.google.inject.Inject;
      25             : import com.google.inject.Singleton;
      26             : import java.io.IOException;
      27             : import java.util.List;
      28             : import javax.servlet.Filter;
      29             : import javax.servlet.FilterChain;
      30             : import javax.servlet.FilterConfig;
      31             : import javax.servlet.ServletException;
      32             : import javax.servlet.ServletRequest;
      33             : import javax.servlet.ServletResponse;
      34             : import javax.servlet.http.HttpServletRequest;
      35             : import javax.servlet.http.HttpServletResponse;
      36             : 
      37             : @Singleton
      38             : public class QueryDocumentationFilter implements Filter {
      39          99 :   private static final FluentLogger logger = FluentLogger.forEnclosingClass();
      40             : 
      41             :   private final QueryDocumentationExecutor searcher;
      42             : 
      43             :   @Inject
      44          99 :   QueryDocumentationFilter(QueryDocumentationExecutor searcher) {
      45          99 :     this.searcher = searcher;
      46          99 :   }
      47             : 
      48             :   @Override
      49          99 :   public void init(FilterConfig filterConfig) {}
      50             : 
      51             :   @Override
      52          99 :   public void destroy() {}
      53             : 
      54             :   @Override
      55             :   public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
      56             :       throws IOException, ServletException {
      57           0 :     HttpServletRequest req = (HttpServletRequest) request;
      58           0 :     if ("GET".equals(req.getMethod()) && !Strings.isNullOrEmpty(req.getParameter("q"))) {
      59           0 :       HttpServletResponse rsp = (HttpServletResponse) response;
      60             :       try {
      61           0 :         List<DocResult> result = searcher.doQuery(request.getParameter("q"));
      62           0 :         RestApiServlet.replyJson(req, rsp, false, ImmutableListMultimap.of(), result);
      63           0 :       } catch (DocQueryException e) {
      64           0 :         logger.atSevere().withCause(e).log("Doc search failed");
      65           0 :         rsp.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
      66           0 :       }
      67           0 :     } else {
      68           0 :       chain.doFilter(request, response);
      69             :     }
      70           0 :   }
      71             : }