public ScmResult executeTagCommand()

in maven-scm-providers/maven-scm-providers-git/maven-scm-provider-jgit/src/main/java/org/apache/maven/scm/provider/git/jgit/command/tag/JGitTagCommand.java [59:111]

42 lines of code
7 McCabe index (conditional complexity)


    public ScmResult executeTagCommand(
            ScmProviderRepository repo, ScmFileSet fileSet, String tag, ScmTagParameters scmTagParameters)
            throws ScmException {
        if (tag == null || tag.trim().isEmpty()) {
            throw new ScmException("tag name must be specified");
        }

        if (!fileSet.getFileList().isEmpty()) {
            throw new ScmException("This provider doesn't support tagging subsets of a directory");
        }

        String escapedTagName = tag.trim().replace(' ', '_');

        Git git = null;
        try {
            git = JGitUtils.openRepo(fileSet.getBasedir());

            // tag the revision
            String tagMessage = scmTagParameters.getMessage();
            Ref tagRef = git.tag()
                    .setName(escapedTagName)
                    .setMessage(tagMessage)
                    .setForceUpdate(false)
                    .call();

            if (repo.isPushChanges()) {
                logger.info("push tag [" + escapedTagName + "] to remote...");
                JGitUtils.push(git, (GitScmProviderRepository) repo, new RefSpec(Constants.R_TAGS + escapedTagName));
            }

            // search for the tagged files
            RevWalk revWalk = new RevWalk(git.getRepository());
            RevCommit commit = revWalk.parseCommit(tagRef.getObjectId());
            revWalk.close();

            final TreeWalk walk = new TreeWalk(git.getRepository());
            walk.reset(); // drop the first empty tree, which we do not need here
            walk.setRecursive(true);
            walk.addTree(commit.getTree());

            List<ScmFile> taggedFiles = new ArrayList<>();
            while (walk.next()) {
                taggedFiles.add(new ScmFile(walk.getPathString(), ScmFileStatus.CHECKED_OUT));
            }
            walk.close();

            return new TagScmResult("JGit tag", taggedFiles);
        } catch (Exception e) {
            throw new ScmException("JGit tag failure!", e);
        } finally {
            JGitUtils.closeRepo(git);
        }
    }