| // Copyright (C) 2010 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.gerrit.server.query.change.QueryProcessor; |
| import com.google.gerrit.server.query.change.QueryProcessor.OutputFormat; |
| import com.google.gson.Gson; |
| import com.google.inject.Inject; |
| import com.google.inject.Provider; |
| import com.google.inject.Singleton; |
| |
| import java.io.IOException; |
| |
| import javax.servlet.ServletOutputStream; |
| import javax.servlet.http.HttpServlet; |
| import javax.servlet.http.HttpServletRequest; |
| import javax.servlet.http.HttpServletResponse; |
| |
| @Singleton |
| public class ChangeQueryServlet extends HttpServlet { |
| private static final long serialVersionUID = 1L; |
| private final Provider<QueryProcessor> processor; |
| |
| @Inject |
| ChangeQueryServlet(Provider<QueryProcessor> processor) { |
| this.processor = processor; |
| } |
| |
| @Override |
| protected void doGet(HttpServletRequest req, HttpServletResponse rsp) |
| throws IOException { |
| rsp.setContentType("text/json"); |
| rsp.setCharacterEncoding("UTF-8"); |
| |
| QueryProcessor p = processor.get(); |
| OutputFormat format = OutputFormat.JSON; |
| try { |
| format = OutputFormat.valueOf(get(req, "format", format.toString())); |
| } catch (IllegalArgumentException err) { |
| error(rsp, "invalid format"); |
| return; |
| } |
| |
| switch (format) { |
| case JSON: |
| rsp.setContentType("text/json"); |
| rsp.setCharacterEncoding("UTF-8"); |
| break; |
| |
| case TEXT: |
| rsp.setContentType("text/plain"); |
| rsp.setCharacterEncoding("UTF-8"); |
| break; |
| |
| default: |
| error(rsp, "invalid format"); |
| return; |
| } |
| |
| p.setIncludeCurrentPatchSet(get(req, "current-patch-set", false)); |
| p.setIncludePatchSets(get(req, "patch-sets", false)); |
| p.setIncludeApprovals(get(req, "all-approvals", false)); |
| p.setOutput(rsp.getOutputStream(), format); |
| p.query(get(req, "q", "status:open")); |
| } |
| |
| private static void error(HttpServletResponse rsp, String message) |
| throws IOException { |
| ErrorMessage em = new ErrorMessage(); |
| em.message = message; |
| |
| ServletOutputStream out = rsp.getOutputStream(); |
| try { |
| out.write(new Gson().toJson(em).getBytes("UTF-8")); |
| out.write('\n'); |
| out.flush(); |
| } finally { |
| out.close(); |
| } |
| } |
| |
| private static String get(HttpServletRequest req, String name, String val) { |
| String v = req.getParameter(name); |
| if (v == null || v.isEmpty()) { |
| return val; |
| } |
| return v; |
| } |
| |
| private static boolean get(HttpServletRequest req, String name, boolean val) { |
| String v = req.getParameter(name); |
| if (v == null || v.isEmpty()) { |
| return val; |
| } |
| return "true".equalsIgnoreCase(v); |
| } |
| |
| public static class ErrorMessage { |
| public final String type = "error"; |
| public String message; |
| } |
| } |