Java tutorial
/******************************************************************************* * Copyright (c) 2011, 2013 IBM Corporation and others. * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/epl-v10.html * * Contributors: * IBM Corporation - initial API and implementation *******************************************************************************/ package org.eclipse.orion.server.git.servlets; import java.net.URI; import java.util.List; import javax.servlet.ServletException; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.eclipse.core.runtime.IPath; import org.eclipse.core.runtime.IStatus; import org.eclipse.jgit.api.*; import org.eclipse.jgit.api.CreateBranchCommand.SetupUpstreamMode; import org.eclipse.jgit.lib.Ref; import org.eclipse.jgit.lib.Repository; import org.eclipse.orion.internal.server.servlets.ProtocolConstants; import org.eclipse.orion.internal.server.servlets.ServletResourceHandler; import org.eclipse.orion.internal.server.servlets.task.TaskJobHandler; import org.eclipse.orion.server.core.LogHelper; import org.eclipse.orion.server.core.ServerStatus; import org.eclipse.orion.server.git.BaseToCloneConverter; import org.eclipse.orion.server.git.GitConstants; import org.eclipse.orion.server.git.jobs.ListBranchesJob; import org.eclipse.orion.server.git.objects.Branch; import org.eclipse.orion.server.servlets.OrionServlet; import org.eclipse.osgi.util.NLS; import org.json.JSONObject; public class GitBranchHandlerV1 extends AbstractGitHandler { public static int PAGE_SIZE = 50; GitBranchHandlerV1(ServletResourceHandler<IStatus> statusHandler) { super(statusHandler); } @Override protected boolean handleGet(RequestInfo requestInfo) throws ServletException { String gitSegment = requestInfo.gitSegment; HttpServletRequest request = requestInfo.request; HttpServletResponse response = requestInfo.response; Repository db = requestInfo.db; IPath filePath = requestInfo.filePath; try { if (gitSegment == null) { // branch list: expected path /git/branch/file/{filePath} ListBranchesJob job; String commits = request.getParameter(GitConstants.KEY_TAG_COMMITS); int commitsNumber = commits == null ? 0 : Integer.parseInt(commits); String page = request.getParameter("page"); //$NON-NLS-1$ if (page != null) { int pageNo = Integer.parseInt(page); int pageSize = request.getParameter("pageSize") == null ? PAGE_SIZE //$NON-NLS-1$ : Integer.parseInt(request.getParameter("pageSize")); //$NON-NLS-1$ job = new ListBranchesJob(TaskJobHandler.getUserId(request), filePath, BaseToCloneConverter.getCloneLocation(getURI(request), BaseToCloneConverter.BRANCH_LIST), commitsNumber, pageNo, pageSize, request.getRequestURI()); } else { job = new ListBranchesJob(TaskJobHandler.getUserId(request), filePath, BaseToCloneConverter .getCloneLocation(getURI(request), BaseToCloneConverter.BRANCH_LIST), commitsNumber); } return TaskJobHandler.handleTaskJob(request, response, job, statusHandler); } // branch details: expected path /git/branch/{name}/file/{filePath} List<Ref> branches = new Git(db).branchList().call(); JSONObject result = null; URI cloneLocation = BaseToCloneConverter.getCloneLocation(getURI(request), BaseToCloneConverter.BRANCH); for (Ref ref : branches) { if (Repository.shortenRefName(ref.getName()).equals(gitSegment)) { result = new Branch(cloneLocation, db, ref).toJSON(); break; } } if (result == null) { String msg = NLS.bind("Branch {0} not found", gitSegment); return statusHandler.handleRequest(request, response, new ServerStatus(IStatus.ERROR, HttpServletResponse.SC_NOT_FOUND, msg, null)); } OrionServlet.writeJSONResponse(request, response, result); return true; } catch (Exception e) { final ServerStatus error = new ServerStatus(IStatus.ERROR, HttpServletResponse.SC_INTERNAL_SERVER_ERROR, "An error occured when looking for a branch.", e); LogHelper.log(error); return statusHandler.handleRequest(request, response, error); } } @Override protected boolean handlePost(RequestInfo requestInfo) throws ServletException { String gitSegment = requestInfo.gitSegment; HttpServletRequest request = requestInfo.request; HttpServletResponse response = requestInfo.response; Repository db = requestInfo.db; IPath filePath = requestInfo.filePath; JSONObject toCreate = requestInfo.getJSONRequest(); try { if (gitSegment == null) { // expected path /gitapi/branch/file/{filePath} String branchName = toCreate.optString(ProtocolConstants.KEY_NAME, null); String startPoint = toCreate.optString(GitConstants.KEY_BRANCH_NAME, null); if (branchName == null || branchName.isEmpty()) { if (startPoint == null || startPoint.isEmpty()) return statusHandler.handleRequest(request, response, new ServerStatus(IStatus.ERROR, HttpServletResponse.SC_BAD_REQUEST, "Branch name must be provided", null)); else { String shortName = Repository.shortenRefName(startPoint); branchName = shortName.substring(shortName.indexOf("/") + 1); //$NON-NLS-1$ } } CreateBranchCommand cc = new Git(db).branchCreate(); cc.setName(branchName); if (startPoint != null && !startPoint.isEmpty()) { cc.setStartPoint(startPoint); cc.setUpstreamMode(SetupUpstreamMode.TRACK); } Ref ref = cc.call(); URI cloneLocation = BaseToCloneConverter.getCloneLocation(getURI(request), BaseToCloneConverter.BRANCH_LIST); JSONObject result = new Branch(cloneLocation, db, ref).toJSON(); OrionServlet.writeJSONResponse(request, response, result); response.setHeader(ProtocolConstants.HEADER_LOCATION, result.getString(ProtocolConstants.KEY_LOCATION)); response.setStatus(HttpServletResponse.SC_CREATED); return true; } String msg = NLS.bind("Failed to create a branch for {0}", filePath); //$NON-NLS-1$ return statusHandler.handleRequest(request, response, new ServerStatus(IStatus.ERROR, HttpServletResponse.SC_BAD_REQUEST, msg, null)); } catch (Exception e) { return statusHandler.handleRequest(request, response, new ServerStatus(IStatus.ERROR, HttpServletResponse.SC_INTERNAL_SERVER_ERROR, "An error occured when creating a branch.", e)); } } @Override protected boolean handleDelete(RequestInfo requestInfo) throws ServletException { String gitSegment = requestInfo.gitSegment; HttpServletRequest request = requestInfo.request; HttpServletResponse response = requestInfo.response; Git git = requestInfo.git; try { if (gitSegment != null) { DeleteBranchCommand cc = git.branchDelete(); cc.setBranchNames(gitSegment); // TODO: the force flag should be passed in the API call cc.setForce(true); cc.call(); // TODO: do something with the result return true; } return false; } catch (Exception e) { return statusHandler.handleRequest(request, response, new ServerStatus(IStatus.ERROR, HttpServletResponse.SC_INTERNAL_SERVER_ERROR, "An error occured when removing a branch.", e)); } } }