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// Copyright (C) 2013 The Android Open Source Project
//
// 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.gerrit.httpd;
import com.google.common.base.Strings;
import com.google.common.collect.ImmutableListMultimap;
import com.google.gerrit.httpd.restapi.RestApiServlet;
import com.google.gerrit.server.documentation.QueryDocumentationExecutor;
import com.google.gerrit.server.documentation.QueryDocumentationExecutor.DocQueryException;
import com.google.gerrit.server.documentation.QueryDocumentationExecutor.DocResult;
import com.google.inject.Inject;
import com.google.inject.Singleton;
import java.io.IOException;
import java.util.List;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
@Singleton
public class QueryDocumentationFilter implements Filter {
private final Logger log = LoggerFactory.getLogger(QueryDocumentationFilter.class);
private final QueryDocumentationExecutor searcher;
@Inject
QueryDocumentationFilter(QueryDocumentationExecutor searcher) {
this.searcher = searcher;
}
@Override
public void init(FilterConfig filterConfig) {}
@Override
public void destroy() {}
@Override
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
throws IOException, ServletException {
HttpServletRequest req = (HttpServletRequest) request;
if ("GET".equals(req.getMethod()) && !Strings.isNullOrEmpty(req.getParameter("q"))) {
HttpServletResponse rsp = (HttpServletResponse) response;
try {
List<DocResult> result = searcher.doQuery(request.getParameter("q"));
RestApiServlet.replyJson(req, rsp, ImmutableListMultimap.of(), result);
} catch (DocQueryException e) {
log.error("Doc search failed:", e);
rsp.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
}
} else {
chain.doFilter(request, response);
}
}
}
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