001package org.apache.maven.scm.provider.git.gitexe.command.update; 002 003/* 004 * Licensed to the Apache Software Foundation (ASF) under one 005 * or more contributor license agreements. See the NOTICE file 006 * distributed with this work for additional information 007 * regarding copyright ownership. The ASF licenses this file 008 * to you under the Apache License, Version 2.0 (the 009 * "License"); you may not use this file except in compliance 010 * with the License. You may obtain a copy of the License at 011 * 012 * http://www.apache.org/licenses/LICENSE-2.0 013 * 014 * Unless required by applicable law or agreed to in writing, 015 * software distributed under the License is distributed on an 016 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 017 * KIND, either express or implied. See the License for the 018 * specific language governing permissions and limitations 019 * under the License. 020 */ 021 022import java.io.File; 023 024import org.apache.maven.scm.ScmBranch; 025import org.apache.maven.scm.ScmException; 026import org.apache.maven.scm.ScmFileSet; 027import org.apache.maven.scm.ScmVersion; 028import org.apache.maven.scm.command.changelog.ChangeLogCommand; 029import org.apache.maven.scm.command.update.AbstractUpdateCommand; 030import org.apache.maven.scm.command.update.UpdateScmResult; 031import org.apache.maven.scm.command.update.UpdateScmResultWithRevision; 032import org.apache.maven.scm.provider.ScmProviderRepository; 033import org.apache.maven.scm.provider.git.command.GitCommand; 034import org.apache.maven.scm.provider.git.gitexe.command.GitCommandLineUtils; 035import org.apache.maven.scm.provider.git.gitexe.command.changelog.GitChangeLogCommand; 036import org.apache.maven.scm.provider.git.gitexe.command.diff.GitDiffCommand; 037import org.apache.maven.scm.provider.git.gitexe.command.diff.GitDiffRawConsumer; 038import org.apache.maven.scm.provider.git.repository.GitScmProviderRepository; 039import org.codehaus.plexus.util.cli.CommandLineUtils; 040import org.codehaus.plexus.util.cli.Commandline; 041 042/** 043 * @author Olivier Lamy 044 * @author <a href="mailto:struberg@yahoo.de">struberg</a> 045 * @since 10 august 2008 046 * 047 */ 048public class GitUpdateCommand 049 extends AbstractUpdateCommand 050 implements GitCommand 051{ 052 /** {@inheritDoc} */ 053 protected UpdateScmResult executeUpdateCommand( ScmProviderRepository repo, ScmFileSet fileSet, 054 ScmVersion scmVersion ) 055 throws ScmException 056 { 057 GitScmProviderRepository repository = (GitScmProviderRepository) repo; 058 059 if ( GitScmProviderRepository.PROTOCOL_FILE.equals( repository.getFetchInfo().getProtocol() ) 060 && repository.getFetchInfo().getPath().indexOf( fileSet.getBasedir().getPath() ) >= 0 ) 061 { 062 throw new ScmException( "remote repository must not be the working directory" ); 063 } 064 065 int exitCode; 066 067 CommandLineUtils.StringStreamConsumer stdout = new CommandLineUtils.StringStreamConsumer(); 068 CommandLineUtils.StringStreamConsumer stderr = new CommandLineUtils.StringStreamConsumer(); 069 070 // fir we need to get the current reversion 071 Commandline clRev = createLatestRevisionCommandLine( repository, fileSet.getBasedir(), scmVersion ); 072 GitLatestRevisionCommandConsumer consumerRev = new GitLatestRevisionCommandConsumer( getLogger() ); 073 exitCode = GitCommandLineUtils.execute( clRev, consumerRev, stderr, getLogger() ); 074 if ( exitCode != 0 ) 075 { 076 return new UpdateScmResult( clRev.toString(), "The git-log command failed.", 077 stderr.getOutput(), false ); 078 } 079 String origSha1 = consumerRev.getLatestRevision(); 080 081 Commandline cl = createCommandLine( repository, fileSet.getBasedir(), scmVersion ); 082 exitCode = GitCommandLineUtils.execute( cl, stdout, stderr, getLogger() ); 083 if ( exitCode != 0 ) 084 { 085 return new UpdateScmResult( cl.toString(), "The git-pull command failed.", 086 stderr.getOutput(), false ); 087 } 088 089 // we also need to log exactly what has been updated 090 GitDiffRawConsumer diffRawConsumer = new GitDiffRawConsumer( getLogger() ); 091 Commandline clDiffRaw = GitDiffCommand.createDiffRawCommandLine( fileSet.getBasedir(), origSha1 ); 092 exitCode = GitCommandLineUtils.execute( clDiffRaw, diffRawConsumer, stderr, getLogger() ); 093 if ( exitCode != 0 ) 094 { 095 return new UpdateScmResult( clDiffRaw.toString(), "The git-diff --raw command failed.", 096 stderr.getOutput(), false ); 097 } 098 099 100 // now let's get the latest version 101 consumerRev = new GitLatestRevisionCommandConsumer( getLogger() ); 102 exitCode = GitCommandLineUtils.execute( clRev, consumerRev, stderr, getLogger() ); 103 if ( exitCode != 0 ) 104 { 105 return new UpdateScmResult( clRev.toString(), "The git-log command failed.", 106 stderr.getOutput(), false ); 107 } 108 String latestRevision = consumerRev.getLatestRevision(); 109 110 return new UpdateScmResultWithRevision( cl.toString(), diffRawConsumer.getChangedFiles(), latestRevision ); 111 } 112 113 /** {@inheritDoc} */ 114 protected ChangeLogCommand getChangeLogCommand() 115 { 116 GitChangeLogCommand changelogCmd = new GitChangeLogCommand(); 117 changelogCmd.setLogger( getLogger() ); 118 119 return changelogCmd; 120 } 121 122 /** 123 * create the command line for updating the current branch with the info from the foreign repository. 124 */ 125 public static Commandline createCommandLine( GitScmProviderRepository repository, File workingDirectory, 126 ScmVersion scmVersion ) 127 { 128 Commandline cl = GitCommandLineUtils.getBaseGitCommandLine( workingDirectory, "pull" ); 129 130 cl.createArg().setLine( repository.getFetchUrl() ); 131 132 // now set the branch where we would like to pull from 133 if ( scmVersion instanceof ScmBranch ) 134 { 135 cl.createArg().setLine( scmVersion.getName() ); 136 } 137 138 return cl; 139 } 140 141 /** 142 * @param scmVersion a valid branch or <code>null</code> if the master branch should be taken 143 * @return CommandLine for getting the latest commit on the given branch 144 */ 145 public static Commandline createLatestRevisionCommandLine( GitScmProviderRepository repository, 146 File workingDirectory, ScmVersion scmVersion ) 147 { 148 Commandline cl = GitCommandLineUtils.getBaseGitCommandLine( workingDirectory, "log" ); 149 150 // only show exactly 1 commit 151 cl.createArg().setValue( "-n1" ); 152 153 // same as --topo-order, but ensure ordering of merges 154 cl.createArg().setValue( "--date-order" ); 155 156 if ( scmVersion != null && scmVersion instanceof ScmBranch && scmVersion.getName() != null 157 && scmVersion.getName().length() > 0 ) 158 { 159 // if any branch is given, lets take em 160 cl.createArg().setValue( scmVersion.getName() ); 161 } 162 // otherwise we work on HEAD/current branch 163 164 return cl; 165 } 166}