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com.itemis.maven.plugins.unleash.scm.providers.ScmProviderGit Maven / Gradle / Ivy
package com.itemis.maven.plugins.unleash.scm.providers;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;
import java.util.Collection;
import java.util.List;
import java.util.Set;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.eclipse.jgit.api.AddCommand;
import org.eclipse.jgit.api.CheckoutCommand;
import org.eclipse.jgit.api.CloneCommand;
import org.eclipse.jgit.api.CommitCommand;
import org.eclipse.jgit.api.CreateBranchCommand;
import org.eclipse.jgit.api.CreateBranchCommand.SetupUpstreamMode;
import org.eclipse.jgit.api.DeleteTagCommand;
import org.eclipse.jgit.api.FetchCommand;
import org.eclipse.jgit.api.Git;
import org.eclipse.jgit.api.LogCommand;
import org.eclipse.jgit.api.LsRemoteCommand;
import org.eclipse.jgit.api.MergeCommand;
import org.eclipse.jgit.api.MergeCommand.FastForwardMode;
import org.eclipse.jgit.api.PushCommand;
import org.eclipse.jgit.api.ResetCommand.ResetType;
import org.eclipse.jgit.api.RevertCommand;
import org.eclipse.jgit.api.TagCommand;
import org.eclipse.jgit.api.TransportCommand;
import org.eclipse.jgit.api.TransportConfigCallback;
import org.eclipse.jgit.api.errors.GitAPIException;
import org.eclipse.jgit.diff.DiffEntry;
import org.eclipse.jgit.diff.DiffFormatter;
import org.eclipse.jgit.lib.AnyObjectId;
import org.eclipse.jgit.lib.Constants;
import org.eclipse.jgit.lib.ObjectId;
import org.eclipse.jgit.lib.PersonIdent;
import org.eclipse.jgit.lib.Ref;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.merge.MergeStrategy;
import org.eclipse.jgit.revwalk.RevCommit;
import org.eclipse.jgit.storage.file.FileRepositoryBuilder;
import org.eclipse.jgit.transport.CredentialsProvider;
import org.eclipse.jgit.transport.PushResult;
import org.eclipse.jgit.transport.RemoteRefUpdate;
import org.eclipse.jgit.transport.RemoteRefUpdate.Status;
import org.eclipse.jgit.transport.SshSessionFactory;
import org.eclipse.jgit.transport.SshTransport;
import org.eclipse.jgit.transport.TagOpt;
import org.eclipse.jgit.transport.Transport;
import org.eclipse.jgit.transport.UsernamePasswordCredentialsProvider;
import com.google.common.base.Joiner;
import com.google.common.base.MoreObjects;
import com.google.common.base.Objects;
import com.google.common.base.Optional;
import com.google.common.collect.Lists;
import com.google.common.io.Closeables;
import com.itemis.maven.plugins.unleash.scm.ScmException;
import com.itemis.maven.plugins.unleash.scm.ScmOperation;
import com.itemis.maven.plugins.unleash.scm.ScmProvider;
import com.itemis.maven.plugins.unleash.scm.ScmProviderInitialization;
import com.itemis.maven.plugins.unleash.scm.annotations.ScmProviderType;
import com.itemis.maven.plugins.unleash.scm.providers.merge.UnleashGitFullMergeStrategy;
import com.itemis.maven.plugins.unleash.scm.providers.util.GitUtil;
import com.itemis.maven.plugins.unleash.scm.requests.BranchRequest;
import com.itemis.maven.plugins.unleash.scm.requests.CheckoutRequest;
import com.itemis.maven.plugins.unleash.scm.requests.CommitRequest;
import com.itemis.maven.plugins.unleash.scm.requests.CommitRequest.Builder;
import com.itemis.maven.plugins.unleash.scm.requests.DeleteBranchRequest;
import com.itemis.maven.plugins.unleash.scm.requests.DeleteTagRequest;
import com.itemis.maven.plugins.unleash.scm.requests.DiffRequest;
import com.itemis.maven.plugins.unleash.scm.requests.DiffRequest.DiffType;
import com.itemis.maven.plugins.unleash.scm.requests.HistoryRequest;
import com.itemis.maven.plugins.unleash.scm.requests.PushRequest;
import com.itemis.maven.plugins.unleash.scm.requests.RevertCommitsRequest;
import com.itemis.maven.plugins.unleash.scm.requests.TagRequest;
import com.itemis.maven.plugins.unleash.scm.requests.UpdateRequest;
import com.itemis.maven.plugins.unleash.scm.results.DiffObject;
import com.itemis.maven.plugins.unleash.scm.results.DiffResult;
import com.itemis.maven.plugins.unleash.scm.results.HistoryCommit;
import com.itemis.maven.plugins.unleash.scm.results.HistoryResult;
@ScmProviderType("git")
public class ScmProviderGit implements ScmProvider {
private static final String LOG_PREFIX = "Git - ";
private Logger log;
private Git git;
private PersonIdent personIdent;
private CredentialsProvider credentialsProvider;
private SshSessionFactory sshSessionFactory;
private File workingDir;
private List additionalThingsToPush;
private GitUtil util;
@Override
public void initialize(final ScmProviderInitialization initialization) {
this.log = initialization.getLogger().or(Logger.getLogger(ScmProvider.class.getName()));
this.workingDir = initialization.getWorkingDirectory();
this.additionalThingsToPush = Lists.newArrayList();
if (this.workingDir.exists() && this.workingDir.isDirectory() && this.workingDir.list().length > 0) {
try {
FileRepositoryBuilder builder = new FileRepositoryBuilder();
Repository repo = builder.findGitDir(this.workingDir).build();
this.git = Git.wrap(repo);
this.personIdent = new PersonIdent(repo);
this.util = new GitUtil(this.git);
} catch (IOException e) {
e.printStackTrace();
}
}
if (initialization.getUsername().isPresent()) {
this.credentialsProvider = new UsernamePasswordCredentialsProvider(initialization.getUsername().get(),
initialization.getPassword().or(""));
}
this.sshSessionFactory = new GitSshSessionFactory(initialization, log);
}
@Override
public void close() {
if (this.git != null) {
this.git.close();
}
}
@Override
public void checkout(CheckoutRequest request) throws ScmException {
if (this.log.isLoggable(Level.INFO)) {
this.log.info(LOG_PREFIX + "Checking out from remote repository.");
}
// check if local working dir is empty
if (this.workingDir.exists() && this.workingDir.list().length > 0) {
throw new ScmException(ScmOperation.CHECKOUT,
"Unable to checkout remote repository '" + request.getRemoteRepositoryUrl() + "'. Local working directory '"
+ this.workingDir.getAbsolutePath() + "' is not empty!");
}
try {
if (this.log.isLoggable(Level.FINE)) {
this.log.fine(LOG_PREFIX + "Cloning remote repository.");
StringBuilder message = new StringBuilder(LOG_PREFIX).append("Clone info:\n");
message.append("\t- WORKING_DIR: ").append(this.workingDir.getAbsolutePath()).append('\n');
message.append("\t- REMOTE_URL: ").append(request.getRemoteRepositoryUrl());
this.log.fine(message.toString());
}
CloneCommand clone = Git.cloneRepository().setDirectory(this.workingDir).setURI(request.getRemoteRepositoryUrl());
setAuthenticationDetails(clone);
if (!request.checkoutWholeRepository()) {
clone.setNoCheckout(true);
}
this.git = clone.call();
this.util = new GitUtil(this.git);
if (this.log.isLoggable(Level.FINE)) {
this.log.fine(LOG_PREFIX + "Cloning remote repository finished successfully.\n");
}
} catch (GitAPIException e) {
throw new ScmException(ScmOperation.CHECKOUT,
"Unable to clone remote git repository '" + request.getRemoteRepositoryUrl()
+ "' into local working directory '" + this.workingDir.getAbsolutePath() + "'.",
e);
}
if (!request.checkoutWholeRepository()) {
// 1. checkout single filepaths from the repository
String revision = request.getRevision().or(Constants.HEAD);
if (this.log.isLoggable(Level.FINE)) {
this.log.fine(LOG_PREFIX + "Checking out single files only.");
StringBuilder message = new StringBuilder(LOG_PREFIX).append("Checkout info:\n");
message.append("\t- FILES: ").append(Joiner.on(',').join(request.getPathsToCheckout())).append('\n');
message.append("\t- REVISION: ").append(revision);
this.log.fine(message.toString());
}
try {
CheckoutCommand checkout = this.git.checkout().setStartPoint(revision).setAllPaths(false);
for (String path : request.getPathsToCheckout()) {
checkout.addPath(path);
}
checkout.call();
} catch (GitAPIException e) {
throw new ScmException(ScmOperation.CHECKOUT,
"Unable to checkout commit with id '" + request.getRevision().get() + "' into local working directory '"
+ this.workingDir.getAbsolutePath() + "'.",
e);
}
} else if (request.checkoutBranch()) {
// 2. checkout a specific branch (and even a commit from this branch)
if (this.log.isLoggable(Level.FINE)) {
this.log.fine(LOG_PREFIX + "Checking out branch" + request.getBranch().get() + ".");
}
if (hasBranch(request.getBranch().get())) {
RevCommit startPoint = this.util.resolveCommit(request.getRevision(), request.getBranch());
if (this.log.isLoggable(Level.FINE)) {
StringBuilder message = new StringBuilder(LOG_PREFIX).append("Checkout info:\n");
message.append("\t- BRANCH: ").append(request.getBranch().get()).append('\n');
message.append("\t- REVISION: ").append(startPoint.getName());
this.log.fine(message.toString());
}
try {
CheckoutCommand checkout = this.git.checkout().setName(request.getBranch().get()).setCreateBranch(true)
.setUpstreamMode(SetupUpstreamMode.SET_UPSTREAM).setStartPoint(startPoint);
checkout.call();
} catch (GitAPIException e) {
throw new ScmException(ScmOperation.CHECKOUT, "Unable to checkout '" + request.getBranch().get()
+ "' into local working directory '" + this.workingDir.getAbsolutePath() + "'.", e);
}
} else {
if (this.log.isLoggable(Level.WARNING)) {
StringBuilder message = new StringBuilder(LOG_PREFIX)
.append("The remote repository contains no branch with name '").append(request.getBranch().get())
.append("'. Staying on current branch '").append(this.util.getCurrentBranchName()).append("'.");
this.log.warning(message.toString());
}
}
} else if (request.checkoutTag()) {
// 3. checkout a specific tag
if (this.log.isLoggable(Level.FINE)) {
this.log.fine(LOG_PREFIX + "Checking out tag" + request.getTag().get() + ".");
}
if (hasTag(request.getTag().get())) {
try {
CheckoutCommand checkout = this.git.checkout().setName(request.getTag().get());
checkout.call();
} catch (GitAPIException e) {
throw new ScmException(ScmOperation.CHECKOUT, "Unable to checkout tag '" + request.getTag().get()
+ "' into local working directory '" + this.workingDir.getAbsolutePath() + "'.", e);
}
} else {
if (this.log.isLoggable(Level.WARNING)) {
StringBuilder message = new StringBuilder(LOG_PREFIX)
.append("The remote repository contains no tag with name '").append(request.getTag().get())
.append("'. Staying on current branch '").append(this.util.getCurrentBranchName()).append("'.");
this.log.warning(message.toString());
}
}
} else if (request.getRevision().isPresent()) {
// 4. checkout a specific commit if no branch or tag is specified
if (this.log.isLoggable(Level.FINE)) {
this.log.fine(LOG_PREFIX + "Checking out a specific revision from current branch.");
StringBuilder message = new StringBuilder(LOG_PREFIX).append("Checkout info:\n");
message.append("\t- BRANCH: ").append(this.util.getCurrentBranchName()).append('\n');
message.append("\t- REVISION: ").append(request.getRevision().get());
this.log.fine(message.toString());
}
try {
CheckoutCommand checkout = this.git.checkout().setName(request.getRevision().get());
checkout.call();
} catch (GitAPIException e) {
throw new ScmException(ScmOperation.CHECKOUT,
"Unable to checkout commit with id '" + request.getRevision().get() + "' into local working directory '"
+ this.workingDir.getAbsolutePath() + "'.",
e);
}
}
if (this.log.isLoggable(Level.INFO)) {
this.log.info(LOG_PREFIX + "Checkout finished successfully!");
}
}
@Override
public String commit(CommitRequest request) throws ScmException {
if (this.log.isLoggable(Level.INFO)) {
this.log.info(LOG_PREFIX + "Committing local changes.");
}
if (!this.util.isDirty(request.getPathsToCommit())) {
if (this.log.isLoggable(Level.INFO)) {
this.log.info(LOG_PREFIX + "Nothing to commit here.");
}
return request.push() ? getLatestRemoteRevision() : getLocalRevision();
}
if (this.log.isLoggable(Level.FINE)) {
StringBuilder message = new StringBuilder(LOG_PREFIX + "Commit info:\n");
message.append("\t- WORKING_DIR: ").append(this.workingDir.getAbsolutePath()).append('\n');
message.append("\t- MERGE_STRATEGY: ").append(request.getMergeStrategy()).append('\n');
message.append("\t- PUSH: ").append(request.push()).append('\n');
message.append("\t- COMMIT_ALL_CHANGES: ").append(request.commitAllChanges());
if (!request.commitAllChanges()) {
message.append("\n\t- FILES: ").append(Joiner.on(',').join(request.getPathsToCommit()));
}
this.log.fine(message.toString());
}
// add all changes to be committed (either everything or the specified paths)
AddCommand add = this.git.add();
if (request.commitAllChanges()) {
if (request.includeUntrackedFiles()) {
add.addFilepattern(".");
} else {
for (String path : this.util.getUncommittedChangedPaths()) {
add.addFilepattern(path);
}
}
} else {
for (String path : request.getPathsToCommit()) {
add.addFilepattern(path);
}
}
try {
add.call();
} catch (GitAPIException e) {
throw new ScmException(ScmOperation.COMMIT, "Unable to add local changes to the index.", e);
}
// commit all added changes
CommitCommand commit = this.git.commit().setMessage(request.getMessage()).setCommitter(this.personIdent);
if (request.commitAllChanges()) {
commit.setAll(true);
} else {
for (String path : request.getPathsToCommit()) {
commit.setOnly(path);
}
}
String newRevision = null;
try {
RevCommit result = commit.call();
newRevision = result.getName();
} catch (GitAPIException e) {
throw new ScmException(ScmOperation.DELETE_TAG, "Could not commit chanhes of local repository.", e);
}
if (request.push()) {
PushRequest pr = PushRequest.builder().mergeStrategy(request.getMergeStrategy())
.mergeClient(request.getMergeClient().orNull()).build();
push(pr);
newRevision = getLatestRemoteRevision();
}
if (this.log.isLoggable(Level.INFO)) {
this.log.info(LOG_PREFIX + "Commit finished successfully. New revision is: " + newRevision);
}
return newRevision;
}
@Override
public String push(PushRequest request) throws ScmException {
if (this.log.isLoggable(Level.INFO)) {
this.log.info(LOG_PREFIX + "Pushing local changes to remote repository.");
}
String localBranchName = this.util.getCurrentBranchName();
String remoteBranchName = this.util.getRemoteBranchName(localBranchName);
String remoteName = this.util.getRemoteName(localBranchName);
String remoteUrl = this.util.getConnectionUrlOfRemote(remoteName);
if (this.log.isLoggable(Level.FINE)) {
StringBuilder message = new StringBuilder(LOG_PREFIX + "Push info:\n");
message.append("\t- WORKING_DIR: ").append(this.workingDir.getAbsolutePath()).append('\n');
message.append("\t- LOCAL_BRANCH: ").append(localBranchName).append('\n');
message.append("\t- REMOTE_BRANCH: ").append(remoteBranchName).append('\n');
message.append("\t- REMOTE: ").append(remoteName).append('\n');
message.append("\t- REMOTE_URL: ").append(remoteUrl).append('\n');
message.append("\t- MERGE_STRATEGY: ").append(request.getMergeStrategy()).append('\n');
this.log.fine(message.toString());
}
// 1. update the local repository before pushing to remote
UpdateRequest ur = UpdateRequest.builder().mergeStrategy(request.getMergeStrategy())
.mergeClient(request.getMergeClient().orNull()).build();
update(ur);
try {
// 2. push local changes to remote repository
PushCommand push = this.git.push().setRemote(remoteName).setAtomic(true).setPushAll().setPushTags();
setAuthenticationDetails(push);
for (String additional : this.additionalThingsToPush) {
push.add(additional);
}
Iterable results = push.call();
Status failureStatus = null;
String reason = null;
resultLoop: for (PushResult result : results) {
Collection updates = result.getRemoteUpdates();
for (RemoteRefUpdate update : updates) {
if (update.getStatus() != Status.OK && update.getStatus() != Status.UP_TO_DATE) {
failureStatus = update.getStatus();
reason = update.getMessage();
break resultLoop;
}
}
}
if (failureStatus != null) {
StringBuilder message = new StringBuilder(
"Could not push local changes to the remote repository due to the following error: [").append(failureStatus)
.append("] ");
if (reason != null) {
message.append(reason);
}
throw new ScmException(ScmOperation.PUSH, message.toString());
}
this.additionalThingsToPush.clear();
} catch (GitAPIException e) {
throw new ScmException(ScmOperation.PUSH, "Could not push local commits to remote repository", e);
}
String newRemoteRevision = getLatestRemoteRevision();
if (this.log.isLoggable(Level.INFO)) {
this.log.info(LOG_PREFIX + "Push finished successfully. New remote revision is: " + newRemoteRevision);
}
return newRemoteRevision;
}
@Override
public String update(UpdateRequest request) throws ScmException {
if (this.log.isLoggable(Level.INFO)) {
this.log.info(LOG_PREFIX + "Updating local repository with remote changes.");
}
String localBranchName = this.util.getCurrentBranchName();
String remoteBranchName = this.util.getRemoteBranchName(localBranchName);
String remoteName = this.util.getRemoteName(localBranchName);
String connectionUrl = this.util.getConnectionUrlOfRemote(remoteName);
// TODO update paths only?
if (this.log.isLoggable(Level.FINE)) {
this.log.fine(LOG_PREFIX + "Fetching remote updates.");
StringBuilder message = new StringBuilder(LOG_PREFIX).append("Fetch info:\n");
message.append("\t- WORKING_DIR: ").append(this.workingDir.getAbsolutePath()).append('\n');
message.append("\t- REMOTE: ").append(remoteName).append('\n');
message.append("\t- REMOTE_URL: ").append(connectionUrl);
this.log.fine(message.toString());
}
try {
FetchCommand fetch = this.git.fetch().setRemote(remoteName).setTagOpt(TagOpt.AUTO_FOLLOW)
.setRemoveDeletedRefs(true);
setAuthenticationDetails(fetch);
fetch.call();
} catch (GitAPIException e) {
throw new ScmException(ScmOperation.UPDATE,
"Could not fetch changes from Git remote '" + remoteName + " [" + connectionUrl + "]'.", e);
}
MergeCommand merge = this.git.merge().setFastForward(FastForwardMode.FF).setCommit(true).setMessage("Merge");
switch (request.getMergeStrategy()) {
case USE_LOCAL:
merge.setStrategy(MergeStrategy.OURS);
break;
case USE_REMOTE:
merge.setStrategy(MergeStrategy.THEIRS);
break;
case FULL_MERGE:
merge.setStrategy(new UnleashGitFullMergeStrategy(request.getMergeClient().get()));
break;
case DO_NOT_MERGE:
// nothing to do here!
break;
default:
throw new UnsupportedOperationException(
"Unknown merge strategy! API and implementation versions are incompatible!");
}
String requestedRevision = request.getTargetRevision().or(getLatestRemoteRevision());
try {
ObjectId revision = this.git.getRepository().resolve(requestedRevision);
merge.include(revision);
} catch (Exception e) {
throw new ScmException(ScmOperation.MERGE, "No Git commit id found for String '" + requestedRevision + "'.", e);
}
if (this.log.isLoggable(Level.FINE)) {
this.log.fine(LOG_PREFIX + "Merging remote updates into local working copy.");
StringBuilder message = new StringBuilder(LOG_PREFIX).append("Merge info:\n");
message.append("\t- WORKING_DIR: ").append(this.workingDir.getAbsolutePath()).append('\n');
message.append("\t- REMOTE: ").append(remoteName).append('\n');
message.append("\t- REMOTE_BRANCH: ").append(remoteBranchName).append('\n');
message.append("\t- REMOTE_REVISION: ").append(requestedRevision).append('\n');
message.append("\t- LOCAL_BRANCH: ").append(localBranchName).append('\n');
message.append("\t- LOCAL_REVISION: ").append(getLocalRevision()).append('\n');
message.append("\t- MERGE_STRATEGY: ").append(request.getMergeStrategy());
this.log.fine(message.toString());
}
try {
merge.call();
} catch (GitAPIException e) {
throw new ScmException(ScmOperation.MERGE, "Could not merge changes fetched from Git remote '" + remoteName + " ["
+ connectionUrl + "]' into local working copy '" + this.workingDir.getAbsolutePath() + "'.", e);
}
String newRevision = getLocalRevision();
if (this.log.isLoggable(Level.INFO)) {
this.log.info(LOG_PREFIX + "Update finished successfully. New revision is: " + newRevision);
}
return newRevision;
}
@Override
public String tag(TagRequest request) throws ScmException {
if (this.log.isLoggable(Level.INFO)) {
this.log.info(LOG_PREFIX + "Tagging local repository with '" + request.getTagName() + "'");
}
if (this.log.isLoggable(Level.FINE)) {
StringBuilder message = new StringBuilder(LOG_PREFIX).append("Tag info:\n");
message.append("\t- WORKING_DIR: ").append(this.workingDir.getAbsolutePath()).append('\n');
message.append("\t- TAG_NAME: ").append(request.getTagName()).append('\n');
message.append("\t- USE_WORKING_COPY: ").append(request.tagFromWorkingCopy()).append('\n');
if (request.tagFromWorkingCopy()) {
message.append("\t- COMMIT_BEFORE_TAGGING: ").append(request.commitBeforeTagging()).append('\n');
message.append("\t- MERGE_STRATEGY: ").append(request.getMergeStrategy());
} else {
message.append("\t- REMOTE_URL: ").append(request.getRemoteRepositoryUrl()).append('\n');
message.append("\t- REVISION: ").append(request.getRevision());
}
this.log.fine(message.toString());
}
if (request.tagFromWorkingCopy()) {
// 1. commit the changes (no merging because we stay local!)
String preTagCommitMessage = request.getPreTagCommitMessage()
.or("Preparation for tag creation (Tag name: '" + request.getTagName() + "').");
Builder builder = CommitRequest.builder().message(preTagCommitMessage);
if (request.includeUntrackedFiles()) {
builder.includeUntrackedFiles();
}
commit(builder.build());
try {
// 2. tag local revision
TagCommand tag = this.git.tag().setName(request.getTagName()).setMessage(request.getMessage())
.setAnnotated(true).setTagger(this.personIdent);
tag.call();
} catch (GitAPIException e) {
throw new ScmException(ScmOperation.TAG, "An error occurred during local Git tag creation.", e);
}
if (!request.commitBeforeTagging()) {
try {
// 3. deletes the local commit that had been done for tag creation.
this.git.reset().setMode(ResetType.MIXED).setRef(Constants.HEAD + "~1").call();
} catch (GitAPIException e) {
throw new ScmException(ScmOperation.TAG,
"An error occurred during local commit resetting (no pre-tag commit was requested).", e);
}
}
String newRevision;
String tagPushName = GitUtil.TAG_NAME_PREFIX + request.getTagName();
if (request.push()) {
if (request.commitBeforeTagging()) {
// if the commit shall be kept, push everything with update of the local WC!
PushRequest pr = PushRequest.builder().mergeStrategy(request.getMergeStrategy())
.mergeClient(request.getMergeClient().orNull()).build();
newRevision = push(pr);
} else {
// if the commit was deleted, just push the tag
String localBranchName = this.util.getCurrentBranchName();
String remoteName = this.util.getRemoteName(localBranchName);
String connectionUrl = this.util.getConnectionUrlOfRemote(remoteName);
try {
PushCommand push = this.git.push().setRemote(remoteName).add(tagPushName);
setAuthenticationDetails(push);
push.call();
newRevision = getLatestRemoteRevision();
} catch (GitAPIException e) {
throw new ScmException(ScmOperation.PUSH, "Unable to push locally created tag '" + request.getTagName()
+ "' to remote '" + remoteName + "[" + connectionUrl + "]+'.", e);
}
}
} else {
newRevision = getLocalRevision();
}
if (this.log.isLoggable(Level.INFO)) {
this.log.info(LOG_PREFIX + "Tag creation finished successfully. New revision is: " + newRevision);
}
return newRevision;
} else {
// TODO implement tagging from url!
// git doesn't support remote tagging but we could clone in bare mode, create the tag, push it and delete the
// cloned repo afterwards
throw new UnsupportedOperationException(
"This SCM provider doesn't support tagging from remote URLs only. This feature needs some workarounds and is scheduled for a later version.");
}
}
@Override
public boolean hasTag(String tagName) throws ScmException {
if (this.log.isLoggable(Level.INFO)) {
this.log.info(LOG_PREFIX + "Searching for Git tag '" + tagName + "'");
}
String localBranchName = this.util.getCurrentBranchName();
String remoteName = this.util.getRemoteName(localBranchName);
String remoteUrl = this.util.getConnectionUrlOfRemote(remoteName);
if (this.log.isLoggable(Level.FINE)) {
StringBuilder message = new StringBuilder(LOG_PREFIX).append("Query info:\n");
message.append("\t- TAG_NAME: ").append(tagName).append('\n');
message.append("\t- WORKING_DIR: ").append(this.workingDir.getAbsolutePath()).append('\n');
message.append("\t- REMOTE: ").append(remoteName).append('\n');
message.append("\t- REMOTE_URL: ").append(remoteUrl);
this.log.fine(message.toString());
}
try {
LsRemoteCommand lsRemote = this.git.lsRemote().setRemote(remoteName).setTags(true);
setAuthenticationDetails(lsRemote);
String tagRefName = GitUtil.TAG_NAME_PREFIX + tagName;
for (Ref tag : lsRemote.call()) {
if (Objects.equal(tag.getName(), tagRefName)) {
return true;
}
}
} catch (GitAPIException e) {
throw new ScmException(ScmOperation.INFO,
"An error occurred while querying the remote git repository for tag '" + tagName + "'.", e);
}
return false;
}
@Override
public String deleteTag(DeleteTagRequest request) throws ScmException {
if (this.log.isLoggable(Level.INFO)) {
this.log.info(LOG_PREFIX + "Deleting Git tag");
}
String localBranchName = this.util.getCurrentBranchName();
String remoteName = this.util.getRemoteName(localBranchName);
String remoteUrl = this.util.getConnectionUrlOfRemote(remoteName);
boolean hasRemoteTag = hasTag(request.getTagName());
// 1. fetch the tag from remote if it is not known locally and the remote one exists
if (!this.util.hasLocalTag(request.getTagName()) && hasRemoteTag) {
if (this.log.isLoggable(Level.FINE)) {
this.log.fine(LOG_PREFIX + "Fetching remote tag");
}
try {
FetchCommand fetch = this.git.fetch().setRemote(remoteName).setTagOpt(TagOpt.FETCH_TAGS);
setAuthenticationDetails(fetch);
fetch.call();
} catch (GitAPIException e) {
throw new ScmException(ScmOperation.DELETE_TAG, "Unable to fetch tags for deletion of tag '"
+ request.getTagName() + "' from remote '" + remoteName + "[" + remoteUrl + "]'.", e);
}
}
// proceed only if tag exists locally (if this is not the case at this point, it doesn't exist remotely either)
if (this.util.hasLocalTag(request.getTagName())) {
if (this.log.isLoggable(Level.FINE)) {
StringBuilder message = new StringBuilder(LOG_PREFIX).append("Tag info:\n");
message.append("\t- TAG_NAME: ").append(request.getTagName()).append('\n');
message.append("\t- REMOTE: ").append(remoteName).append('\n');
message.append("\t- REMOTE_URL: ").append(remoteUrl);
this.log.fine(message.toString());
}
try {
// 2. delete the tag locally
DeleteTagCommand deleteTag = this.git.tagDelete().setTags(GitUtil.TAG_NAME_PREFIX + request.getTagName());
deleteTag.call();
} catch (GitAPIException e) {
throw new ScmException(ScmOperation.DELETE_TAG,
"An error occurred during the local deletion of tag '" + request.getTagName() + "'.", e);
}
try {
// 3. if the tag exists in the remote repository the remote tag gets either deletet or will be scheduled for
// deletion on next push
if (hasRemoteTag) {
String tagPushName = ":" + GitUtil.TAG_NAME_PREFIX + request.getTagName();
if (request.push()) {
PushCommand push = this.git.push().setRemote(remoteName).add(tagPushName);
setAuthenticationDetails(push);
push.call();
} else {
this.additionalThingsToPush.add(tagPushName);
}
}
} catch (GitAPIException e) {
throw new ScmException(ScmOperation.DELETE_TAG, "An error occurred during the deletion of tag '"
+ request.getTagName() + "' from remote '" + remoteName + "[" + remoteUrl + "]'.", e);
}
}
return getLatestRemoteRevision();
}
@Override
public String branch(BranchRequest request) throws ScmException {
if (this.log.isLoggable(Level.INFO)) {
this.log.info(LOG_PREFIX + "Branching local repository.");
}
if (this.log.isLoggable(Level.FINE)) {
StringBuilder message = new StringBuilder(LOG_PREFIX).append("Branch info:\n");
message.append("\t- WORKING_DIR: ").append(this.workingDir.getAbsolutePath()).append('\n');
message.append("\t- BRANCH_NAME: ").append(request.getBranchName()).append('\n');
message.append("\t- USE_WORKING_COPY: ").append(request.branchFromWorkingCopy()).append('\n');
if (request.branchFromWorkingCopy()) {
message.append("\t- COMMIT_BEFORE_BRANCHING: ").append(request.commitBeforeBranching()).append('\n');
message.append("\t- MERGE_STRATEGY: ").append(request.getMergeStrategy());
} else {
message.append("\t- REMOTE_URL: ").append(request.getRemoteRepositoryUrl()).append('\n');
message.append("\t- REVISION: ").append(request.getRevision());
}
this.log.fine(message.toString());
}
if (request.branchFromWorkingCopy()) {
if (this.util.hasLocalBranch(request.getBranchName())) {
// QUESTION eventually checkout local branch instead?
throw new ScmException(ScmOperation.BRANCH, "A local branch with this name already exists!");
}
if (hasBranch(request.getBranchName())) {
// QUESTION eventually fetch branch and create a local one tracking this one instead?
throw new ScmException(ScmOperation.BRANCH, "A remote branch with this name already exists!");
}
// 1. commit the changes if branching from WC is requested(no merging!)
if (!request.getRevision().isPresent()) {
String preBranchCommitMessage = request.getPreBranchCommitMessage() != null
? request.getPreBranchCommitMessage() : request.getMessage();
CommitRequest cr = CommitRequest.builder().message(preBranchCommitMessage).noMerge().build();
commit(cr);
}
try {
// 2. branch from WC
CreateBranchCommand branch = this.git.branchCreate().setName(request.getBranchName())
.setUpstreamMode(SetupUpstreamMode.TRACK).setStartPoint(request.getRevision().or(Constants.HEAD));
branch.call();
} catch (GitAPIException e) {
throw new ScmException(ScmOperation.BRANCH, "Could not create local branch '" + request.getBranchName()
+ "' in working copy '" + this.workingDir.getAbsolutePath() + "'", e);
}
// 3. deletes the local commit that had been done for branch creation.
if (!request.commitBeforeBranching()) {
try {
this.git.reset().setMode(ResetType.MIXED).setRef(Constants.HEAD + "~1").call();
} catch (GitAPIException e) {
throw new ScmException(ScmOperation.BRANCH,
"An error occurred during local commit resetting (no pre-branch commit was requested).", e);
}
}
String branchPushName = GitUtil.HEADS_NAME_PREFIX + request.getBranchName();
String newRevision;
if (request.push()) {
if (request.commitBeforeBranching()) {
// if the commit shall be kept, push everything with update of the local WC!
PushRequest pr = PushRequest.builder().mergeStrategy(request.getMergeStrategy())
.mergeClient(request.getMergeClient().orNull()).build();
newRevision = push(pr);
} else {
String localBranchName = this.util.getCurrentBranchName();
String remoteName = this.util.getRemoteName(localBranchName);
String connectionUrl = this.util.getConnectionUrlOfRemote(remoteName);
try {
PushCommand push = this.git.push().setRemote(remoteName).add(branchPushName);
setAuthenticationDetails(push);
push.call();
newRevision = getLatestRemoteRevision();
} catch (GitAPIException e) {
throw new ScmException(ScmOperation.PUSH, "Unable to push locally created branch '"
+ request.getBranchName() + "' to remote '" + remoteName + "[" + connectionUrl + "]+'.", e);
}
}
} else {
newRevision = getLocalRevision();
}
if (this.log.isLoggable(Level.INFO)) {
this.log.info(LOG_PREFIX + "Branch creation finished successfully. New revision is: " + newRevision);
}
return newRevision;
} else {
// TODO implement remote branching -> similar to remote tagging!
throw new UnsupportedOperationException(
"This SCM provider doesn't support tagging from remote URLs only. This feature needs some workarounds and is scheduled for a later version.");
}
}
@Override
public boolean hasBranch(String branchName) throws ScmException {
if (this.log.isLoggable(Level.INFO)) {
this.log.info(LOG_PREFIX + "Searching for Git branch");
}
String localBranchName = this.util.getCurrentBranchName();
String remoteName = this.util.getRemoteName(localBranchName);
String remoteUrl = this.util.getConnectionUrlOfRemote(remoteName);
if (this.log.isLoggable(Level.FINE)) {
StringBuilder message = new StringBuilder(LOG_PREFIX).append("Query info:\n");
message.append("\t- BRANCH_NAME: ").append(branchName).append('\n');
message.append("\t- WORKING_DIR: ").append(this.workingDir.getAbsolutePath()).append('\n');
message.append("\t- REMOTE: ").append(remoteName).append('\n');
message.append("\t- REMOTE_URL: ").append(remoteUrl);
this.log.fine(message.toString());
}
try {
LsRemoteCommand lsRemote = this.git.lsRemote().setRemote(remoteName).setHeads(true);
setAuthenticationDetails(lsRemote);
Collection[ branches = lsRemote.call();
for (Ref branch : branches) {
if (Objects.equal(branch.getName(), GitUtil.HEADS_NAME_PREFIX + branchName)) {
return true;
}
}
} catch (GitAPIException e) {
throw new ScmException(ScmOperation.INFO,
"An error occurred while querying the remote git repository for branch '" + branchName + "'.", e);
}
return false;
}
@Override
public String deleteBranch(DeleteBranchRequest request) throws ScmException {
if (this.log.isLoggable(Level.INFO)) {
this.log.info(LOG_PREFIX + "Deleting Git branch");
}
String localBranchName = this.util.getCurrentBranchName();
String remoteName = this.util.getRemoteName(localBranchName);
String remoteUrl = this.util.getConnectionUrlOfRemote(remoteName);
if (this.log.isLoggable(Level.FINE)) {
StringBuilder message = new StringBuilder(LOG_PREFIX).append("Branch info:\n");
message.append("\t- TAG_NAME: ").append(request.getBranchName()).append('\n');
message.append("\t- REMOTE: ").append(remoteName).append('\n');
message.append("\t- REMOTE_URL: ").append(remoteUrl);
this.log.fine(message.toString());
}
if (this.util.hasLocalBranch(request.getBranchName())) {
try {
this.git.branchDelete().setBranchNames(GitUtil.HEADS_NAME_PREFIX + request.getBranchName()).setForce(true)
.call();
} catch (GitAPIException e) {
e.printStackTrace();
}
}
if (hasBranch(request.getBranchName())) {
if (request.push()) {
try {
PushCommand push = this.git.push().setRemote(remoteName)
.add(":" + GitUtil.HEADS_NAME_PREFIX + request.getBranchName());
setAuthenticationDetails(push);
push.call();
} catch (GitAPIException e) {
e.printStackTrace();
}
} else {
this.additionalThingsToPush.add(":" + GitUtil.HEADS_NAME_PREFIX + request.getBranchName());
}
}
return getLatestRemoteRevision();
}
@Override
public String revertCommits(RevertCommitsRequest request) throws ScmException {
if (this.log.isLoggable(Level.INFO)) {
this.log.info(LOG_PREFIX + "Reverting Git commits");
}
if (this.log.isLoggable(Level.FINE)) {
StringBuilder message = new StringBuilder(LOG_PREFIX).append("Commit info:\n");
message.append("\t- FROM: ").append(request.getFromRevision()).append('\n');
message.append("\t- TO: ").append(request.getToRevision()).append('\n');
message.append("\t- MERGE_STRATEGY: ").append(request.getMergeStrategy()).append('\n');
this.log.fine(message.toString());
}
// update to HEAD revision first then revert commits!
UpdateRequest updateRequest = UpdateRequest.builder().mergeStrategy(request.getMergeStrategy())
.mergeClient(request.getMergeClient().orNull()).build();
update(updateRequest);
RevCommit from = this.util.resolveCommit(Optional.of(request.getFromRevision()), Optional.] absent());
RevCommit to = this.util.resolveCommit(Optional.of(request.getToRevision()), Optional. absent());
int diff = from.getCommitTime() - to.getCommitTime();
if (diff == 0) {
// nothing to revert! return the latest remote version
return getLatestRemoteRevision();
} else if (diff < 0) {
// older from version (wrong direction!
throw new ScmException(ScmOperation.REVERT_COMMITS,
"Error reverting commits in remote repository. \"FROM\" revision (" + request.getFromRevision()
+ ") is older than \"TO\" revision (" + request.getToRevision() + ")");
}
try {
RevertCommand revert = this.git.revert();
List commitsToRevert = this.util.resolveCommitRange(request.getToRevision(),
request.getFromRevision());
for (RevCommit commit : commitsToRevert) {
revert.include(commit);
}
switch (request.getMergeStrategy()) {
case USE_LOCAL:
revert.setStrategy(MergeStrategy.OURS);
break;
case USE_REMOTE:
revert.setStrategy(MergeStrategy.THEIRS);
break;
case FULL_MERGE:
revert.setStrategy(new UnleashGitFullMergeStrategy(request.getMergeClient().get()));
break;
case DO_NOT_MERGE:
// nothing to do here!
break;
default:
throw new UnsupportedOperationException(
"Unknown merge strategy! API and implementation versions are incompatible!");
}
revert.call();
} catch (Exception e) {
throw new ScmException(ScmOperation.REVERT_COMMITS, "An error occurred during the reversion of commits.", e);
}
String newRevision;
if (request.push()) {
PushRequest pr = PushRequest.builder().mergeStrategy(request.getMergeStrategy())
.mergeClient(request.getMergeClient().orNull()).build();
newRevision = push(pr);
} else {
newRevision = getLocalRevision();
}
if (this.log.isLoggable(Level.INFO)) {
this.log.info(LOG_PREFIX + "Revert finished successfully. New revision is: " + newRevision);
}
return newRevision;
}
@Override
public String getLocalRevision() {
try {
RevCommit revCommit = this.git.log().call().iterator().next();
return revCommit.getName();
} catch (GitAPIException e) {
throw new IllegalStateException("Could not determine the last revision commit of the local repository.", e);
}
}
@Override
public String getLatestRemoteRevision() {
try {
String localBranchName = this.util.getCurrentBranchName();
String remoteName = this.util.getRemoteBranchName(localBranchName);
LsRemoteCommand lsRemote = this.git.lsRemote().setHeads(true);
setAuthenticationDetails(lsRemote);
Collection[ branches = lsRemote.call();
for (Ref branch : branches) {
if (Objects.equal(branch.getTarget().getName(), remoteName)) {
return branch.getObjectId().getName();
}
}
} catch (Exception e) {
e.printStackTrace();
}
return "";
}
@Override
public String calculateTagConnectionString(String currentConnectionString, String tagName) {
// connection string only points to the git dir and branches/tags have to be specified and checked out separately
return currentConnectionString;
}
@Override
public String calculateBranchConnectionString(String currentConnectionString, String branchName) {
// connection string only points to the git dir and branches/tags have to be specified and checked out separately
return currentConnectionString;
}
@Override
public boolean isTagInfoIncludedInConnection() {
// connection string only points to the git dir and branches/tags have to be specified and checked out separately
return false;
}
@Override
// TODO logging!
public HistoryResult getHistory(HistoryRequest request) throws ScmException {
HistoryResult.Builder historyBuilder = HistoryResult.builder();
if (request.getRemoteRepositoryUrl().isPresent()) {
throw new ScmException(ScmOperation.INFO, "Remote history retrieval is not supported by Git!");
}
try {
LogCommand logCommand = this.git.log();
if (request.getMessageFilters().isEmpty()) {
// set the limit of commits to be retrieved only if no filters are provided since the user wants to see the
// specified number of commits but some could be filtered out
logCommand.setMaxCount((int) request.getMaxResults());
}
AnyObjectId startId = getTagRevisionOrDefault(request.getStartTag(), request.getStartRevision().orNull());
AnyObjectId endId = getTagRevisionOrDefault(request.getEndTag(),
request.getEndRevision().or(this.git.getRepository().resolve("HEAD").name()));
if (startId != null && endId != null) {
logCommand.addRange(startId, endId);
} else if (startId != null) {
logCommand.add(startId);
} else if (endId != null) {
logCommand.add(endId);
}
Set] messageFilterPatterns = request.getMessageFilters();
int commitsAdded = 0;
for (RevCommit revCommit : logCommand.call()) {
if (commitsAdded == request.getMaxResults()) {
break;
}
if (isFilteredMessage(revCommit.getShortMessage(), messageFilterPatterns)) {
continue;
}
HistoryCommit.Builder b = HistoryCommit.builder();
b.setRevision(revCommit.getId().name());
b.setMessage(revCommit.getShortMessage());
PersonIdent authorIdent = revCommit.getAuthorIdent();
b.setAuthor(authorIdent.getName());
b.setDate(authorIdent.getWhen());
historyBuilder.addCommit(b.build());
commitsAdded++;
}
} catch (Exception e) {
throw new ScmException(ScmOperation.INFO, "Unable to retrieve the Git log history.", e);
}
return historyBuilder.build();
}
private boolean isFilteredMessage(String message, Set messageFilterPatterns) {
for (String filter : messageFilterPatterns) {
if (message.matches(filter)) {
return true;
}
}
return false;
}
private AnyObjectId getTagRevisionOrDefault(Optional tag, String defaultRevision) {
if (tag.isPresent()) {
try {
String tagName = GitUtil.TAG_NAME_PREFIX + tag.get();
for (Ref ref : this.git.tagList().call()) {
if (Objects.equal(tagName, ref.getName())) {
Ref peeledRef = this.git.getRepository().peel(ref);
return MoreObjects.firstNonNull(peeledRef.getPeeledObjectId(), peeledRef.getObjectId());
}
}
throw new ScmException(ScmOperation.INFO, "Could not find a tag with name " + tag.get());
} catch (Exception e) {
throw new ScmException(ScmOperation.INFO, "Unable to get the revision of the following tag: " + tag.get(), e);
}
}
return defaultRevision != null ? ObjectId.fromString(defaultRevision) : null;
}
@Override
public DiffResult getDiff(DiffRequest request) throws ScmException {
if (request.getSourceRemoteRepositoryUrl().isPresent() || request.getTargetRemoteRepositoryUrl().isPresent()) {
throw new ScmException(ScmOperation.DIFF,
"Diff creation has been requested from remote repositories. This feature is currently not supported by the Git SCM provider.");
}
String sourceRevision = request.getSourceRevision().or("HEAD");
ObjectId sourceId = null;
try {
sourceId = this.git.getRepository().resolve(sourceRevision);
} catch (Exception e) {
throw new ScmException(ScmOperation.DIFF,
"Unable to resolve source object id using the current repository: " + sourceRevision, e);
}
String targetRevision = request.getTargetRevision().or("HEAD");
ObjectId targetId = null;
try {
targetId = this.git.getRepository().resolve(targetRevision);
} catch (Exception e) {
throw new ScmException(ScmOperation.DIFF,
"Unable to resolve target object id using the current repository: " + sourceRevision, e);
}
DiffResult.Builder resultBuilder = DiffResult.builder();
ByteArrayOutputStream os = new ByteArrayOutputStream();
DiffFormatter df = new DiffFormatter(os);
df.setRepository(this.git.getRepository());
try {
List entries = df.scan(sourceId, targetId);
for (DiffEntry entry : entries) {
DiffObject.Builder b = DiffObject.builder();
switch (entry.getChangeType()) {
case ADD:
b.addition(entry.getNewPath());
break;
case DELETE:
b.deletion(entry.getOldPath());
break;
case MODIFY:
b.changed(entry.getOldPath());
if (request.getType() == DiffType.CHANGES_ONLY) {
df.format(entry);
df.flush();
String textualDiff = new String(os.toByteArray());
b.addTextualDiff(textualDiff);
os.reset();
}
break;
case RENAME:
b.moved(entry.getOldPath(), entry.getNewPath());
break;
case COPY:
b.copied(entry.getOldPath(), entry.getNewPath());
break;
}
if (request.getType() == DiffType.FULL) {
df.format(entry);
df.flush();
String textualDiff = new String(os.toByteArray());
b.addTextualDiff(textualDiff);
os.reset();
}
resultBuilder.addDiff(b.build());
}
} catch (Exception e) {
throw new ScmException(ScmOperation.DIFF, "Unable to calculate diff.", e);
} finally {
df.close();
try {
Closeables.close(os, true);
} catch (IOException e) {
// should never happen ;)
}
}
return resultBuilder.build();
}
private void setAuthenticationDetails(TransportCommand command) {
command.setCredentialsProvider(this.credentialsProvider);
command.setTransportConfigCallback(new TransportConfigCallback() {
@Override
public void configure(Transport transport) {
if (isSshTransport(transport)) {
SshTransport sshTransport = (SshTransport) transport;
sshTransport.setSshSessionFactory(ScmProviderGit.this.sshSessionFactory);
}
}
private boolean isSshTransport(Transport transport) {
return transport instanceof SshTransport;
}
});
}
}
