com.teamscale.GitRepositoryHelper.kt Maven / Gradle / Ivy

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A Gradle plugin that supports collecting Testwise Coverage and uploading reports to Teamscale.

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package com.teamscale

import com.teamscale.client.CommitDescriptor
import org.eclipse.jgit.api.Git
import org.eclipse.jgit.lib.ObjectId
import org.eclipse.jgit.lib.Repository
import org.eclipse.jgit.revwalk.RevCommit
import org.eclipse.jgit.revwalk.RevWalk
import java.io.File
import java.io.IOException

/** Helper class for Git repository actions. */
object GitRepositoryHelper {

    /** Returns the last commit in the given git repository. */
    @Throws(IOException::class)
    fun getHeadCommitDescriptor(baseDirectory: File): Pair {
        val git = Git.open(baseDirectory)
        val repository = git.repository
        val branch = repository.branch
        val commit = getCommit(repository, branch)
        val commitTimeSeconds = commit.commitTime.toLong()
        val ref = repository.refDatabase.findRef("HEAD").objectId.name
        return Pair(CommitDescriptor(branch, commitTimeSeconds * 1000L), ref)
    }

    /** Returns the commit denoted by the given commit id/tag/head.  */
    @Throws(IOException::class)
    private fun getCommit(repository: Repository, revisionBranchOrTag: String): RevCommit {
        val revWalk = RevWalk(repository)
        try {
            val head = repository.refDatabase.findRef(revisionBranchOrTag)
            return if (head != null) {
                revWalk.parseCommit(head.leaf.objectId)
            } else revWalk.parseCommit(ObjectId.fromString(revisionBranchOrTag))
        } finally {
            revWalk.close()
        }
    }
}