| // Copyright (C) 2009 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.google.gerrit.httpd.rpc.project; |
| |
| import com.google.gerrit.common.data.ListBranchesResult; |
| import com.google.gerrit.common.errors.InvalidNameException; |
| import com.google.gerrit.common.errors.InvalidRevisionException; |
| import com.google.gerrit.httpd.rpc.Handler; |
| import com.google.gerrit.reviewdb.Branch; |
| import com.google.gerrit.reviewdb.Project; |
| import com.google.gerrit.server.IdentifiedUser; |
| import com.google.gerrit.server.git.GitRepositoryManager; |
| import com.google.gerrit.server.git.ReplicationQueue; |
| import com.google.gerrit.server.project.NoSuchProjectException; |
| import com.google.gerrit.server.project.ProjectControl; |
| import com.google.gerrit.server.project.RefControl; |
| import com.google.inject.Inject; |
| import com.google.inject.assistedinject.Assisted; |
| |
| import org.eclipse.jgit.errors.IncorrectObjectTypeException; |
| import org.eclipse.jgit.errors.MissingObjectException; |
| import org.eclipse.jgit.lib.Constants; |
| import org.eclipse.jgit.lib.ObjectId; |
| import org.eclipse.jgit.lib.Ref; |
| import org.eclipse.jgit.lib.RefUpdate; |
| import org.eclipse.jgit.lib.Repository; |
| import org.eclipse.jgit.revwalk.ObjectWalk; |
| import org.eclipse.jgit.revwalk.RevObject; |
| import org.eclipse.jgit.revwalk.RevWalk; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.io.IOException; |
| |
| class AddBranch extends Handler<ListBranchesResult> { |
| private static final Logger log = LoggerFactory.getLogger(AddBranch.class); |
| |
| interface Factory { |
| AddBranch create(@Assisted Project.NameKey projectName, |
| @Assisted("branchName") String branchName, |
| @Assisted("startingRevision") String startingRevision); |
| } |
| |
| private final ProjectControl.Factory projectControlFactory; |
| private final ListBranches.Factory listBranchesFactory; |
| private final IdentifiedUser identifiedUser; |
| private final GitRepositoryManager repoManager; |
| private final ReplicationQueue replication; |
| |
| private final Project.NameKey projectName; |
| private final String branchName; |
| private final String startingRevision; |
| |
| @Inject |
| AddBranch(final ProjectControl.Factory projectControlFactory, |
| final ListBranches.Factory listBranchesFactory, |
| final IdentifiedUser identifiedUser, |
| final GitRepositoryManager repoManager, |
| final ReplicationQueue replication, |
| |
| @Assisted Project.NameKey projectName, |
| @Assisted("branchName") String branchName, |
| @Assisted("startingRevision") String startingRevision) { |
| this.projectControlFactory = projectControlFactory; |
| this.listBranchesFactory = listBranchesFactory; |
| this.identifiedUser = identifiedUser; |
| this.repoManager = repoManager; |
| this.replication = replication; |
| |
| this.projectName = projectName; |
| this.branchName = branchName; |
| this.startingRevision = startingRevision; |
| } |
| |
| @Override |
| public ListBranchesResult call() throws NoSuchProjectException, |
| InvalidNameException, InvalidRevisionException, IOException { |
| final ProjectControl projectControl = |
| projectControlFactory.controlFor(projectName); |
| |
| String refname = branchName; |
| while (refname.startsWith("/")) { |
| refname = refname.substring(1); |
| } |
| if (!refname.startsWith(Constants.R_REFS)) { |
| refname = Constants.R_HEADS + refname; |
| } |
| if (!Repository.isValidRefName(refname)) { |
| throw new InvalidNameException(); |
| } |
| |
| final Branch.NameKey name = new Branch.NameKey(projectName, refname); |
| final RefControl refControl = projectControl.controlForRef(name); |
| final Repository repo = repoManager.openRepository(projectName.get()); |
| try { |
| final ObjectId revid = parseStartingRevision(repo); |
| final RevWalk rw = verifyConnected(repo, revid); |
| RevObject object = rw.parseAny(revid); |
| |
| if (refname.startsWith(Constants.R_HEADS)) { |
| // Ensure that what we start the branch from is a commit. If we |
| // were given a tag, deference to the commit instead. |
| // |
| try { |
| object = rw.parseCommit(object); |
| } catch (IncorrectObjectTypeException notCommit) { |
| throw new IllegalStateException(startingRevision + " not a commit"); |
| } |
| } |
| |
| if (!refControl.canCreate(rw, object)) { |
| throw new IllegalStateException("Cannot create " + refname); |
| } |
| |
| try { |
| final RefUpdate u = repo.updateRef(refname); |
| u.setExpectedOldObjectId(ObjectId.zeroId()); |
| u.setNewObjectId(object.copy()); |
| u.setRefLogIdent(identifiedUser.newRefLogIdent()); |
| u.setRefLogMessage("created via web from " + startingRevision, false); |
| final RefUpdate.Result result = u.update(rw); |
| switch (result) { |
| case FAST_FORWARD: |
| case NEW: |
| case NO_CHANGE: |
| replication.scheduleUpdate(name.getParentKey(), refname); |
| break; |
| default: { |
| final String msg = |
| "Cannot create branch " + name + ": " + result.name(); |
| log.error(msg); |
| throw new IOException(result.name()); |
| } |
| } |
| } catch (IOException err) { |
| log.error("Cannot create branch " + name, err); |
| throw err; |
| } |
| } finally { |
| repo.close(); |
| } |
| |
| return listBranchesFactory.create(projectName).call(); |
| } |
| |
| private ObjectId parseStartingRevision(final Repository repo) |
| throws InvalidRevisionException { |
| try { |
| final ObjectId revid = repo.resolve(startingRevision); |
| if (revid == null) { |
| throw new InvalidRevisionException(); |
| } |
| return revid; |
| } catch (IOException err) { |
| log.error("Cannot resolve \"" + startingRevision + "\" in project \"" |
| + projectName + "\"", err); |
| throw new InvalidRevisionException(); |
| } |
| } |
| |
| private RevWalk verifyConnected(final Repository repo, final ObjectId revid) |
| throws InvalidRevisionException { |
| try { |
| final ObjectWalk rw = new ObjectWalk(repo); |
| try { |
| rw.markStart(rw.parseCommit(revid)); |
| } catch (IncorrectObjectTypeException err) { |
| throw new InvalidRevisionException(); |
| } |
| for (final Ref r : repo.getAllRefs().values()) { |
| try { |
| rw.markUninteresting(rw.parseAny(r.getObjectId())); |
| } catch (MissingObjectException err) { |
| continue; |
| } |
| } |
| rw.checkConnectivity(); |
| return rw; |
| } catch (IncorrectObjectTypeException err) { |
| throw new InvalidRevisionException(); |
| } catch (MissingObjectException err) { |
| throw new InvalidRevisionException(); |
| } catch (IOException err) { |
| log.error("Repository \"" + repo.getDirectory() |
| + "\" may be corrupt; suggest running git fsck", err); |
| throw new InvalidRevisionException(); |
| } |
| } |
| } |