com.atlassian.jgitflow.core.JGitFlowInitCommand Maven / Gradle / Ivy
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The core java library implementing git flow
package com.atlassian.jgitflow.core;
import java.io.File;
import java.io.IOException;
import java.util.concurrent.Callable;
import com.atlassian.jgitflow.core.exception.AlreadyInitializedException;
import com.atlassian.jgitflow.core.exception.JGitFlowGitAPIException;
import com.atlassian.jgitflow.core.exception.JGitFlowIOException;
import com.atlassian.jgitflow.core.exception.SameBranchException;
import com.atlassian.jgitflow.core.util.GitHelper;
import com.google.common.base.Strings;
import org.eclipse.jgit.api.CreateBranchCommand;
import org.eclipse.jgit.api.Git;
import org.eclipse.jgit.api.errors.GitAPIException;
import org.eclipse.jgit.errors.ConfigInvalidException;
import org.eclipse.jgit.errors.IncorrectObjectTypeException;
import org.eclipse.jgit.errors.MissingObjectException;
import org.eclipse.jgit.errors.RepositoryNotFoundException;
import org.eclipse.jgit.lib.*;
import org.eclipse.jgit.revwalk.RevCommit;
import org.eclipse.jgit.revwalk.RevWalk;
/**
* Initializes a project for use with git flow
*
* Examples:
*
* Initialize with the defaults or throw an exception if it's already initialized
*
*
* JGitFlow flow = JGitFlow.init(new File("some dir"));
*
*
* Initialize with the defaults or return the instance if it's already initialized
*
*
* JGitFlow flow = JGitFlow.getOrInit(new File("some dir"));
*
*
* Initialize with custom overrides or return the instance if it's already initialized
*
*
* InitContext ctx = new InitContext();
* ctx.setMaster("GA");
*
* JGitFlow flow = JGitFlow.getOrInit(new File("some dir"), ctx);
*
*
* Initialize with custom overrides replacing any existing configuration
*
*
* InitContext ctx = new InitContext();
* ctx.setMaster("GA");
*
* JGitFlow flow = JGitFlow.forceInit(new File("some dir"), ctx);
*
*/
public class JGitFlowInitCommand implements Callable
{
private static final String SHORT_NAME = "init";
private File directory;
private boolean force;
private InitContext context;
JGitFlowReporter reporter;
private String defaultOriginUrl;
/**
* Create a new init command instance.
*
* An instance of this class is usually obtained by calling one of the static {@link com.atlassian.jgitflow.core.JGitFlow} init methods
*/
public JGitFlowInitCommand()
{
this.force = false;
this.reporter = new JGitFlowReporter();
}
/**
* @return A {@link com.atlassian.jgitflow.core.JGitFlow} instance
* @throws com.atlassian.jgitflow.core.exception.JGitFlowIOException
* @throws com.atlassian.jgitflow.core.exception.JGitFlowGitAPIException
* @throws com.atlassian.jgitflow.core.exception.AlreadyInitializedException
* @throws com.atlassian.jgitflow.core.exception.SameBranchException
*/
@Override
public JGitFlow call() throws JGitFlowIOException, JGitFlowGitAPIException, AlreadyInitializedException, SameBranchException
{
Git git = null;
reporter.debugCommandCall(SHORT_NAME);
if (null == this.context)
{
this.context = new InitContext();
}
try
{
git = getOrInitGit(directory);
}
catch (IOException e)
{
reporter.errorText(SHORT_NAME, e.getMessage());
reporter.endCommand();
throw new JGitFlowIOException(e);
}
catch (GitAPIException e)
{
reporter.errorText(SHORT_NAME, e.getMessage());
reporter.endCommand();
throw new JGitFlowGitAPIException(e);
}
Repository repo = git.getRepository();
GitFlowConfiguration gfConfig = new GitFlowConfiguration(git);
RevWalk walk = null;
try
{
String currentBranch = repo.getBranch();
//set origin if we need to
if (!Strings.isNullOrEmpty(defaultOriginUrl))
{
StoredConfig gitConfig = git.getRepository().getConfig();
String newOriginUrl = defaultOriginUrl;
if (defaultOriginUrl.startsWith("file://"))
{
File originFile = new File(defaultOriginUrl.substring(7));
newOriginUrl = "file://" + originFile.getCanonicalPath();
}
gitConfig.setString(ConfigConstants.CONFIG_REMOTE_SECTION, Constants.DEFAULT_REMOTE_NAME, "url", newOriginUrl);
gitConfig.setString(ConfigConstants.CONFIG_REMOTE_SECTION, Constants.DEFAULT_REMOTE_NAME, "fetch", "+refs/heads/*:refs/remotes/origin/*");
gitConfig.save();
gitConfig.load();
git.fetch().setRemote(Constants.DEFAULT_REMOTE_NAME).call();
}
if (!force && gfConfig.gitFlowIsInitialized())
{
reporter.errorText(SHORT_NAME, "git flow is already initialized and force flag is false");
reporter.endCommand();
throw new AlreadyInitializedException("Already initialized for git flow.");
}
//First setup master
if (gfConfig.hasMasterConfigured() && !force)
{
context.setMaster(gfConfig.getMaster());
}
//TODO: we should set an allowFetch flag and do a complete fetch before the local/remote checks if needed.
//if no local master exists, but a remote does, check it out
if (!GitHelper.localBranchExists(git, context.getMaster()) && GitHelper.remoteBranchExists(git, context.getMaster(), reporter))
{
reporter.debugText(SHORT_NAME, "creating new local '" + context.getMaster() + "' branch from origin '" + context.getMaster() + "'");
git.branchCreate()
.setName(context.getMaster())
.setUpstreamMode(CreateBranchCommand.SetupUpstreamMode.SET_UPSTREAM)
.setStartPoint("origin/" + context.getMaster())
.call();
}
gfConfig.setMaster(context.getMaster());
//now setup develop
if (gfConfig.hasDevelopConfigured() && !force)
{
context.setDevelop(gfConfig.getDevelop());
}
if (context.getDevelop().equals(context.getMaster()))
{
reporter.errorText(SHORT_NAME, "master and develop branches configured with the same name: [" + context.getMaster() + "]");
reporter.endCommand();
throw new SameBranchException("master and develop branches cannot be the same: [" + context.getMaster() + "]");
}
reporter.infoText(SHORT_NAME, "setting develop in config to '" + context.getDevelop() + "'");
gfConfig.setDevelop(context.getDevelop());
//Creation of HEAD
walk = new RevWalk(repo);
ObjectId masterBranch = repo.resolve(Constants.R_HEADS + context.getMaster());
RevCommit masterCommit = null;
if (null != masterBranch)
{
try
{
masterCommit = walk.parseCommit(masterBranch);
}
catch (MissingObjectException e)
{
//ignore
}
catch (IncorrectObjectTypeException e)
{
//ignore
}
}
if (null == masterCommit)
{
reporter.debugText(SHORT_NAME, "no commits found on '" + context.getMaster() + "'. creating initial commit.");
RefUpdate refUpdate = repo.getRefDatabase().newUpdate(Constants.HEAD, false);
refUpdate.setForceUpdate(true);
refUpdate.link(Constants.R_HEADS + context.getMaster());
git.commit().setMessage("Initial Commit").call();
}
//creation of develop
if (!GitHelper.localBranchExists(git, context.getDevelop()))
{
if (GitHelper.remoteBranchExists(git, context.getDevelop(), reporter))
{
reporter.debugText(SHORT_NAME, "creating new local '" + context.getDevelop() + "' branch from origin '" + context.getDevelop() + "'");
git.branchCreate()
.setName(context.getDevelop())
.setUpstreamMode(CreateBranchCommand.SetupUpstreamMode.SET_UPSTREAM)
.setStartPoint("origin/" + context.getDevelop())
.call();
}
else
{
reporter.debugText(SHORT_NAME, "creating new local '" + context.getDevelop() + "' branch without origin");
git.branchCreate()
.setName(context.getDevelop())
.setUpstreamMode(CreateBranchCommand.SetupUpstreamMode.NOTRACK)
.call();
}
}
//don't do this as it breaks feature finish
//git.checkout().setName(context.getDevelop()).call();
//setup prefixes
for (String prefixName : gfConfig.getPrefixNames())
{
if (gfConfig.hasPrefixConfigured(prefixName) && !force)
{
context.setPrefix(prefixName, gfConfig.getPrefixValue(prefixName));
}
gfConfig.setPrefix(prefixName, context.getPrefix(prefixName));
}
if (!Strings.isNullOrEmpty(currentBranch) && !currentBranch.equals(repo.getBranch()) && (GitHelper.localBranchExists(git, currentBranch) || GitHelper.remoteBranchExists(git, currentBranch, reporter)))
{
git.checkout().setName(currentBranch).call();
}
}
catch (IOException e)
{
reporter.errorText(SHORT_NAME, e.getMessage());
reporter.flush();
throw new JGitFlowIOException(e);
}
catch (GitAPIException e)
{
reporter.errorText(SHORT_NAME, e.getMessage());
reporter.flush();
throw new JGitFlowGitAPIException(e);
}
catch (ConfigInvalidException e)
{
reporter.errorText(SHORT_NAME, e.getMessage());
reporter.flush();
throw new JGitFlowGitAPIException(e);
}
finally
{
if (null != walk)
{
walk.release();
}
reporter.endCommand();
}
return new JGitFlow(git, gfConfig, reporter);
}
/**
* Sets the project root folder
*
* @param directory
* @return {@code this}
*/
public JGitFlowInitCommand setDirectory(File directory)
{
this.directory = directory;
return this;
}
/**
* Set the initialization context
*
* @param context
* @return {@code this}
*/
public JGitFlowInitCommand setInitContext(InitContext context)
{
this.context = context;
return this;
}
/**
* Whether to override the current configuration
*
* @param force true to override, false(default) otherwise
* @return {@code this}
*/
public JGitFlowInitCommand setForce(boolean force)
{
this.force = force;
return this;
}
public JGitFlowInitCommand setDefaultOriginUrl(String defaultOriginUrl)
{
this.defaultOriginUrl = defaultOriginUrl;
return this;
}
private Git getOrInitGit(File folder) throws IOException, GitAPIException
{
reporter.debugMethod(SHORT_NAME, "getOrInitGit");
Git gitRepo;
try
{
reporter.debugText(SHORT_NAME, "looking for git folder in " + folder.getAbsolutePath());
RepositoryBuilder rb = new RepositoryBuilder()
.readEnvironment()
.findGitDir(folder);
File gitDir = rb.getGitDir();
if (null != gitDir)
{
reporter.debugText(SHORT_NAME, "found existing git folder");
gitRepo = Git.open(gitDir);
}
else
{
reporter.debugText(SHORT_NAME, "no git folder found, initializing");
gitRepo = Git.init().setDirectory(folder).call();
}
}
catch (RepositoryNotFoundException e)
{
reporter.debugText(SHORT_NAME, "no git folder found, initializing");
gitRepo = Git.init().setDirectory(folder).call();
}
reporter.endMethod();
return gitRepo;
}
}