Java tutorial
/******************************************************************************* * Copyright (c) 2014 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.Collection; import javax.servlet.ServletException; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.eclipse.core.runtime.IStatus; import org.eclipse.jgit.api.Git; import org.eclipse.jgit.api.StashCreateCommand; import org.eclipse.jgit.api.StashDropCommand; import org.eclipse.jgit.api.StashListCommand; import org.eclipse.jgit.api.errors.GitAPIException; import org.eclipse.jgit.api.errors.InvalidRefNameException; import org.eclipse.jgit.lib.PersonIdent; import org.eclipse.jgit.lib.Repository; import org.eclipse.jgit.revwalk.RevCommit; import org.eclipse.orion.internal.server.servlets.ServletResourceHandler; 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.StashApplyCommand; import org.eclipse.orion.server.git.objects.StashPage; import org.eclipse.orion.server.git.objects.StashRef; import org.eclipse.orion.server.servlets.OrionServlet; import org.eclipse.osgi.util.NLS; import org.json.JSONObject; public class GitStashHandlerV1 extends AbstractGitHandler { private final static int PAGE_SIZE = 50; GitStashHandlerV1(ServletResourceHandler<IStatus> statusHandler) { super(statusHandler); } /** * Helper method extracting the StashRef for the stash commit rev * * @param git * Git handler object * @param stashRev * Git commit name * @return StashRef wrapper object or <code>null</code> if the given commit is not present in the stash * @throws InvalidRefNameException * @throws GitAPIException */ protected StashRef getStashRef(Git git, String stashRev) throws InvalidRefNameException, GitAPIException { if (stashRev == null) return null; StashListCommand stashList = git.stashList(); Collection<RevCommit> stashedRefsCollection = stashList.call(); int k = 0; for (RevCommit rev : stashedRefsCollection) if (stashRev.equals(rev.getName())) return new StashRef(k); else ++k; return null; } /** * Helper method returning whether the stash is empty or not * * @param git * Git handler object * @return <code>true</code> iff the git stash is empty * @throws InvalidRefNameException * @throws GitAPIException */ protected boolean isStashEmpty(Git git) throws InvalidRefNameException, GitAPIException { StashListCommand stashList = git.stashList(); Collection<RevCommit> stashedRefsCollection = stashList.call(); return stashedRefsCollection.isEmpty(); } @Override protected boolean handlePost(RequestInfo requestInfo) throws ServletException { JSONObject requestPayload = requestInfo.getJSONRequest(); HttpServletRequest request = requestInfo.request; HttpServletResponse response = requestInfo.response; Repository db = requestInfo.db; String indexMessage = requestPayload.optString(GitConstants.KEY_STASH_INDEX_MESSAGE); String workingDirectoryMessage = requestPayload.optString(GitConstants.KEY_STASH_WORKING_DIRECTORY_MESSAGE); boolean includeUntracked = requestPayload.optBoolean(GitConstants.KEY_STASH_INCLUDE_UNTRACKED, false); try { Git git = new Git(db); StashCreateCommand stashCreate = git.stashCreate(); stashCreate.setPerson(new PersonIdent(db)); stashCreate.setIncludeUntracked(includeUntracked); if (!indexMessage.isEmpty()) stashCreate.setIndexMessage(indexMessage); if (!workingDirectoryMessage.isEmpty()) stashCreate.setWorkingDirectoryMessage(workingDirectoryMessage); stashCreate.call(); return true; } catch (Exception ex) { String msg = "An error occured for stash command."; return statusHandler.handleRequest(request, response, new ServerStatus(IStatus.ERROR, HttpServletResponse.SC_INTERNAL_SERVER_ERROR, msg, ex)); } } @Override protected boolean handlePut(RequestInfo requestInfo) throws ServletException { JSONObject requestPayload = requestInfo.getJSONRequest(); HttpServletRequest request = requestInfo.request; HttpServletResponse response = requestInfo.response; Repository db = requestInfo.db; /* gitapi/stash/<stashRev>/file/(...) */ String stashRev = requestInfo.gitSegment; boolean applyIndex = requestPayload.optBoolean(GitConstants.KEY_STASH_APPLY_INDEX, true); boolean applyUntracked = requestPayload.optBoolean(GitConstants.KEY_STASH_APPLY_UNTRACKED, true); try { Git git = new Git(db); /* check for empty stash */ if (isStashEmpty(git)) { String msg = "Failed to apply stashed changes due to an empty stash."; return statusHandler.handleRequest(request, response, new ServerStatus(IStatus.WARNING, HttpServletResponse.SC_BAD_REQUEST, msg, null)); } StashApplyCommand applyCommand = new StashApplyCommand(db); if (stashRev != null) { StashRef stashRef = getStashRef(git, stashRev); if (stashRef == null) { String msg = NLS.bind("Invalid stash reference {0}.", stashRev); return statusHandler.handleRequest(request, response, new ServerStatus(IStatus.ERROR, HttpServletResponse.SC_BAD_REQUEST, msg, null)); } applyCommand.setStashRef(stashRef.getStringRef()); applyCommand.setApplyUntracked(applyUntracked); applyCommand.setApplyIndex(applyIndex); applyCommand.call(); } else { /* git stash pop */ applyCommand.setApplyUntracked(applyUntracked); applyCommand.setApplyIndex(applyIndex); applyCommand.call(); StashDropCommand dropCommand = git.stashDrop(); dropCommand.setAll(false); dropCommand.call(); } return true; } catch (Exception ex) { String msg = "An error occured for stash command."; return statusHandler.handleRequest(request, response, new ServerStatus(IStatus.ERROR, HttpServletResponse.SC_INTERNAL_SERVER_ERROR, msg, ex)); } } @Override protected boolean handleGet(RequestInfo requestInfo) throws ServletException { HttpServletRequest request = requestInfo.request; HttpServletResponse response = requestInfo.response; Repository db = requestInfo.db; int page = request.getParameter("page") != null ? new Integer(request.getParameter("page")).intValue() : 1; //$NON-NLS-1$ //$NON-NLS-2$ int pageSize = request.getParameter("pageSize") != null //$NON-NLS-1$ ? new Integer(request.getParameter("pageSize")).intValue() //$NON-NLS-1$ : PAGE_SIZE; String messageFilter = request.getParameter("filter"); //$NON-NLS-1$ try { URI baseLocation = getURI(request); URI cloneLocation = BaseToCloneConverter.getCloneLocation(baseLocation, BaseToCloneConverter.COMMIT); Git git = new Git(db); StashListCommand stashList = git.stashList(); Collection<RevCommit> stashedRefsCollection = stashList.call(); StashPage stashPage = new StashPage(cloneLocation, db, stashedRefsCollection, page, pageSize, messageFilter); OrionServlet.writeJSONResponse(request, response, stashPage.toJSON()); return true; } catch (Exception ex) { String msg = "An error occured for stash command."; return statusHandler.handleRequest(request, response, new ServerStatus(IStatus.ERROR, HttpServletResponse.SC_INTERNAL_SERVER_ERROR, msg, ex)); } } @Override protected boolean handleDelete(RequestInfo requestInfo) throws ServletException { HttpServletRequest request = requestInfo.request; HttpServletResponse response = requestInfo.response; Repository db = requestInfo.db; /* gitapi/stash/<stashRev>/file/(...) */ String stashRev = requestInfo.gitSegment; try { Git git = new Git(db); /* check for empty stash */ if (isStashEmpty(git)) { String msg = "Failed to drop stashed changes due to an empty stash."; return statusHandler.handleRequest(request, response, new ServerStatus(IStatus.WARNING, HttpServletResponse.SC_BAD_REQUEST, msg, null)); } StashDropCommand dropCommand = git.stashDrop(); if (stashRev != null) { StashRef stashRef = getStashRef(git, stashRev); if (stashRef == null) { String msg = NLS.bind("Invalid stash reference {0}.", stashRev); return statusHandler.handleRequest(request, response, new ServerStatus(IStatus.ERROR, HttpServletResponse.SC_BAD_REQUEST, msg, null)); } dropCommand.setStashRef(stashRef.getRef()); } else dropCommand.setAll(true); dropCommand.call(); return true; } catch (Exception ex) { String msg = "An error occured for stash command."; return statusHandler.handleRequest(request, response, new ServerStatus(IStatus.ERROR, HttpServletResponse.SC_INTERNAL_SERVER_ERROR, msg, ex)); } } }