private boolean isNonFastForwardUpdate()

in src/main/java/com/googlesource/gerrit/plugins/refprotection/RefUpdateListener.java [153:168]

• 14 lines of code
• 2 McCabe index (conditional complexity)

  private boolean isNonFastForwardUpdate(RefUpdatedEvent event, ProjectResource project)
      throws RepositoryNotFoundException, IOException {
    if (isRefDeleted(event)) {
      // Can't be non-fast-forward if the ref was deleted, and
      // attempting a check would cause a MissingObjectException.
      return false;
    }
    RefUpdateAttribute refUpdate = event.refUpdate.get();
    try (Repository repo = repoManager.openRepository(project.getNameKey())) {
      try (RevWalk walk = new RevWalk(repo)) {
        RevCommit oldCommit = walk.parseCommit(repo.resolve(refUpdate.oldRev));
        RevCommit newCommit = walk.parseCommit(repo.resolve(refUpdate.newRev));
        return !walk.isMergedInto(oldCommit, newCommit);
      }
    }
  }