| // Copyright (C) 2012 The Android Open Source Project |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| package com.googlesource.gerrit.plugins.github.git; |
| |
| import static com.google.gerrit.entities.RefNames.REFS_HEADS; |
| |
| import com.google.gerrit.entities.Account; |
| import com.google.gerrit.entities.BranchNameKey; |
| import com.google.gerrit.entities.Change; |
| import com.google.gerrit.entities.PatchSet; |
| import com.google.gerrit.entities.Project; |
| import com.google.gerrit.extensions.restapi.RestApiException; |
| import com.google.gerrit.index.query.QueryParseException; |
| import com.google.gerrit.index.query.QueryResult; |
| import com.google.gerrit.server.ChangeUtil; |
| import com.google.gerrit.server.IdentifiedUser; |
| import com.google.gerrit.server.IdentifiedUser.GenericFactory; |
| import com.google.gerrit.server.change.ChangeInserter; |
| import com.google.gerrit.server.change.PatchSetInserter; |
| import com.google.gerrit.server.notedb.ChangeNotes; |
| import com.google.gerrit.server.notedb.Sequences; |
| import com.google.gerrit.server.project.InvalidChangeOperationException; |
| import com.google.gerrit.server.project.NoSuchChangeException; |
| import com.google.gerrit.server.query.change.ChangeData; |
| import com.google.gerrit.server.query.change.ChangeQueryBuilder; |
| import com.google.gerrit.server.query.change.ChangeQueryProcessor; |
| import com.google.gerrit.server.query.change.InternalChangeQuery; |
| import com.google.gerrit.server.update.BatchUpdate; |
| import com.google.gerrit.server.update.UpdateException; |
| import com.google.inject.Inject; |
| import com.google.inject.Provider; |
| import java.io.IOException; |
| import java.time.Instant; |
| import java.util.Collections; |
| import java.util.List; |
| import org.eclipse.jgit.lib.ObjectId; |
| import org.eclipse.jgit.lib.Ref; |
| import org.eclipse.jgit.lib.Repository; |
| import org.eclipse.jgit.revwalk.FooterKey; |
| import org.eclipse.jgit.revwalk.RevCommit; |
| import org.eclipse.jgit.revwalk.RevWalk; |
| import org.eclipse.jgit.util.ChangeIdUtil; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| public class PullRequestCreateChange { |
| private static final Logger LOG = LoggerFactory.getLogger(PullRequestCreateChange.class); |
| private static final FooterKey CHANGE_ID = new FooterKey("Change-Id"); |
| |
| private final ChangeInserter.Factory changeInserterFactory; |
| private final PatchSetInserter.Factory patchSetInserterFactory; |
| private final GenericFactory userFactory; |
| private final Provider<InternalChangeQuery> queryProvider; |
| private final BatchUpdate.Factory updateFactory; |
| private final Provider<ChangeQueryProcessor> qp; |
| private final ChangeQueryBuilder changeQuery; |
| private final Sequences sequences; |
| |
| @Inject |
| PullRequestCreateChange( |
| ChangeInserter.Factory changeInserterFactory, |
| PatchSetInserter.Factory patchSetInserterFactory, |
| IdentifiedUser.GenericFactory userFactory, |
| Provider<InternalChangeQuery> queryProvider, |
| BatchUpdate.Factory batchUpdateFactory, |
| Provider<ChangeQueryProcessor> qp, |
| ChangeQueryBuilder changeQuery, |
| Sequences sequences) { |
| this.changeInserterFactory = changeInserterFactory; |
| this.patchSetInserterFactory = patchSetInserterFactory; |
| this.userFactory = userFactory; |
| this.queryProvider = queryProvider; |
| this.updateFactory = batchUpdateFactory; |
| this.qp = qp; |
| this.changeQuery = changeQuery; |
| this.sequences = sequences; |
| } |
| |
| public Change.Id addCommitToChange( |
| final Project project, |
| final Repository repo, |
| final String destinationBranch, |
| final Account.Id pullRequestOwner, |
| final RevCommit pullRequestCommit, |
| final String pullRequestMessage, |
| final String topic) |
| throws NoSuchChangeException, IOException, InvalidChangeOperationException, UpdateException, |
| RestApiException { |
| try (BatchUpdate bu = |
| updateFactory.create( |
| project.getNameKey(), userFactory.create(pullRequestOwner), Instant.now())) { |
| |
| return internalAddCommitToChange( |
| bu, |
| project, |
| repo, |
| destinationBranch, |
| pullRequestOwner, |
| pullRequestCommit, |
| pullRequestMessage, |
| topic); |
| } |
| } |
| |
| public Change.Id internalAddCommitToChange( |
| BatchUpdate bu, |
| final Project project, |
| final Repository repo, |
| final String destinationBranch, |
| final Account.Id pullRequestOwner, |
| final RevCommit pullRequestCommit, |
| final String pullRequestMesage, |
| final String topic) |
| throws InvalidChangeOperationException, IOException, UpdateException, RestApiException { |
| if (destinationBranch == null || destinationBranch.length() == 0) { |
| throw new InvalidChangeOperationException("Destination branch cannot be null or empty"); |
| } |
| Ref destRef = repo.findRef(destinationBranch); |
| if (destRef == null) { |
| throw new InvalidChangeOperationException("Branch " + destinationBranch + " does not exist."); |
| } |
| |
| String pullRequestSha1 = pullRequestCommit.getId().getName(); |
| List<ChangeData> existingChanges = queryChangesForSha1(pullRequestSha1); |
| if (!existingChanges.isEmpty()) { |
| LOG.debug( |
| "Pull request commit ID " |
| + pullRequestSha1 |
| + " has been already uploaded as Change-Id=" |
| + existingChanges.get(0).getId()); |
| return null; |
| } |
| |
| Change.Key changeKey; |
| final List<String> idList = pullRequestCommit.getFooterLines(CHANGE_ID); |
| if (!idList.isEmpty()) { |
| final String idStr = idList.get(idList.size() - 1).trim(); |
| changeKey = Change.key(idStr); |
| } else { |
| final ObjectId computedChangeId = |
| ChangeIdUtil.computeChangeId( |
| pullRequestCommit.getTree(), |
| pullRequestCommit, |
| pullRequestCommit.getAuthorIdent(), |
| pullRequestCommit.getCommitterIdent(), |
| pullRequestMesage); |
| |
| changeKey = Change.key("I" + computedChangeId.name()); |
| } |
| |
| String branchName = destRef.getName(); |
| List<ChangeData> destChanges = |
| queryProvider |
| .get() |
| .byBranchKey( |
| BranchNameKey.create( |
| project.getNameKey(), |
| branchName.startsWith(REFS_HEADS) |
| ? branchName.substring(REFS_HEADS.length()) |
| : branchName), |
| changeKey); |
| |
| if (destChanges.size() > 1) { |
| throw new InvalidChangeOperationException( |
| "Multiple Changes with Change-ID " |
| + changeKey |
| + " already exist on the target branch: cannot add a new patch-set " |
| + destinationBranch); |
| } |
| |
| if (destChanges.size() == 1) { |
| // The change key exists on the destination branch: adding a new |
| // patch-set |
| ChangeData destChangeData = destChanges.get(0); |
| Change destChange = destChangeData.change(); |
| insertPatchSet( |
| bu, repo, destChange, pullRequestCommit, destChangeData.notes(), pullRequestMesage); |
| return destChange.getId(); |
| } |
| |
| // Change key not found on destination branch. We can create a new |
| // change. |
| return createNewChange( |
| bu, |
| changeKey, |
| project.getNameKey(), |
| destRef, |
| pullRequestOwner, |
| pullRequestCommit, |
| destinationBranch, |
| pullRequestMesage, |
| topic); |
| } |
| |
| private List<ChangeData> queryChangesForSha1(String pullRequestSha1) { |
| QueryResult<ChangeData> results; |
| try { |
| results = qp.get().query(changeQuery.commit(pullRequestSha1)); |
| return results.entities(); |
| } catch (QueryParseException e) { |
| LOG.error( |
| "Invalid SHA1 " + pullRequestSha1 + ": cannot query changes for this pull request", e); |
| return Collections.emptyList(); |
| } |
| } |
| |
| private void insertPatchSet( |
| BatchUpdate bu, |
| Repository git, |
| Change change, |
| RevCommit cherryPickCommit, |
| ChangeNotes changeNotes, |
| String pullRequestMessage) |
| throws IOException, UpdateException, RestApiException { |
| try (RevWalk revWalk = new RevWalk(git)) { |
| PatchSet.Id psId = ChangeUtil.nextPatchSetId(git, change.currentPatchSetId()); |
| |
| PatchSetInserter patchSetInserter = |
| patchSetInserterFactory.create(changeNotes, psId, cherryPickCommit); |
| patchSetInserter.setMessage(pullRequestMessage); |
| patchSetInserter.setValidate(false); |
| |
| bu.addOp(change.getId(), patchSetInserter); |
| bu.execute(); |
| } |
| } |
| |
| private Change.Id createNewChange( |
| BatchUpdate bu, |
| Change.Key changeKey, |
| Project.NameKey project, |
| Ref destRef, |
| Account.Id pullRequestOwner, |
| RevCommit pullRequestCommit, |
| String refName, |
| String pullRequestMessage, |
| String topic) |
| throws UpdateException, RestApiException, IOException { |
| Change change = |
| new Change( |
| changeKey, |
| Change.id(sequences.nextChangeId()), |
| pullRequestOwner, |
| BranchNameKey.create(project, destRef.getName()), |
| Instant.now()); |
| if (topic != null) { |
| change.setTopic(topic); |
| } |
| ChangeInserter ins = changeInserterFactory.create(change.getId(), pullRequestCommit, refName); |
| |
| ins.setMessage(pullRequestMessage); |
| bu.insertChange(ins); |
| bu.execute(); |
| |
| return ins.getChange().getId(); |
| } |
| } |