| // Copyright (C) 2017 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.googlesource.gerrit.plugins.lfs.locks; |
| |
| import static com.google.gerrit.extensions.api.lfs.LfsDefinitions.CONTENTTYPE_VND_GIT_LFS_JSON; |
| import static java.nio.charset.StandardCharsets.UTF_8; |
| import static org.apache.http.HttpStatus.SC_OK; |
| |
| import com.google.common.base.Supplier; |
| import com.google.common.base.Suppliers; |
| import com.google.gson.FieldNamingPolicy; |
| import com.google.gson.Gson; |
| import com.google.gson.GsonBuilder; |
| import java.io.BufferedReader; |
| import java.io.BufferedWriter; |
| import java.io.IOException; |
| import java.io.InputStreamReader; |
| import java.io.OutputStreamWriter; |
| import java.io.Reader; |
| import java.io.Writer; |
| import javax.servlet.http.HttpServletRequest; |
| import javax.servlet.http.HttpServletResponse; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| class LfsLocksContext { |
| private static final Logger log = LoggerFactory.getLogger(LfsLocksContext.class); |
| |
| public final String path; |
| |
| private final HttpServletRequest req; |
| private final HttpServletResponse res; |
| private final Supplier<Writer> writer; |
| private final Supplier<Reader> reader; |
| private final Gson gson; |
| |
| LfsLocksContext(final HttpServletRequest req, final HttpServletResponse res) { |
| this.path = req.getPathInfo().startsWith("/") ? req.getPathInfo() : "/" + req.getPathInfo(); |
| this.req = req; |
| this.res = res; |
| this.writer = |
| Suppliers.memoize( |
| new Supplier<Writer>() { |
| @Override |
| public Writer get() { |
| try { |
| return new BufferedWriter(new OutputStreamWriter(res.getOutputStream(), UTF_8)); |
| } catch (IOException e) { |
| throw new RuntimeException(e); |
| } |
| } |
| }); |
| this.reader = |
| Suppliers.memoize( |
| new Supplier<Reader>() { |
| @Override |
| public Reader get() { |
| try { |
| return new BufferedReader(new InputStreamReader(req.getInputStream(), UTF_8)); |
| } catch (IOException e) { |
| throw new RuntimeException(e); |
| } |
| } |
| }); |
| this.gson = createGson(); |
| setLfsResponseType(); |
| } |
| |
| String getHeader(String name) { |
| return req.getHeader(name); |
| } |
| |
| String getParam(String name) { |
| return req.getParameter(name); |
| } |
| |
| <T> T input(Class<T> clazz) { |
| return gson.fromJson(getReader(), clazz); |
| } |
| |
| <T> void sendResponse(T content) throws IOException { |
| res.setStatus(SC_OK); |
| gson.toJson(content, getWriter()); |
| getWriter().flush(); |
| } |
| |
| void sendError(int status, String message) throws IOException { |
| sendError(status, new Error(message)); |
| } |
| |
| void sendError(int status, Error error) throws IOException { |
| log.error(error.message); |
| res.setStatus(status); |
| gson.toJson(error, getWriter()); |
| getWriter().flush(); |
| } |
| |
| Writer getWriter() { |
| return writer.get(); |
| } |
| |
| Reader getReader() { |
| return reader.get(); |
| } |
| |
| void setLfsResponseType() { |
| res.setContentType(CONTENTTYPE_VND_GIT_LFS_JSON); |
| } |
| |
| private Gson createGson() { |
| return new GsonBuilder() |
| .setFieldNamingPolicy(FieldNamingPolicy.LOWER_CASE_WITH_UNDERSCORES) |
| .disableHtmlEscaping() |
| .create(); |
| } |
| |
| /** copied from org.eclipse.jgit.lfs.server.LfsProtocolServlet.Error */ |
| static class Error { |
| String message; |
| |
| Error(String m) { |
| this.message = m; |
| } |
| } |
| } |