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feat: bump bf-core 0.13, add CommitsProvider, FileInfoProvider
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138
src/main/kotlin/org/jetbrains/research/ictl/riskypatterns/jgit/CommitsProvider.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,138 @@ | ||
| package org.jetbrains.research.ictl.riskypatterns.jgit | ||
|
|
||
| import org.eclipse.jgit.diff.DiffEntry.ChangeType | ||
| import org.eclipse.jgit.diff.DiffFormatter | ||
| import org.eclipse.jgit.lib.Constants | ||
| import org.eclipse.jgit.lib.ObjectReader | ||
| import org.eclipse.jgit.lib.Repository | ||
| import org.eclipse.jgit.revwalk.RevCommit | ||
| import org.eclipse.jgit.revwalk.RevWalk | ||
| import org.eclipse.jgit.revwalk.filter.CommitTimeRevFilter | ||
| import org.eclipse.jgit.treewalk.CanonicalTreeParser | ||
| import org.eclipse.jgit.treewalk.EmptyTreeIterator | ||
| import org.eclipse.jgit.treewalk.TreeWalk | ||
| import org.eclipse.jgit.util.io.NullOutputStream | ||
| import org.jetbrains.research.ictl.riskypatterns.calculation.BusFactorConstants | ||
| import org.jetbrains.research.ictl.riskypatterns.calculation.entities.CommitInfo | ||
| import org.jetbrains.research.ictl.riskypatterns.calculation.entities.DiffEntry | ||
| import org.jetbrains.research.ictl.riskypatterns.calculation.entities.UserInfo | ||
| import java.time.Duration | ||
| import java.util.* | ||
|
|
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| class CommitsProvider(private val repository: Repository, private val dayGap: Long = BusFactorConstants.DAYS_GAP) : Iterable<CommitInfo> { | ||
| override fun iterator(): Iterator<CommitInfo> = RepoIterator(repository, dayGap) | ||
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| class RepoIterator(private val repository: Repository, private val dayGap: Long) : Iterator<CommitInfo>, AutoCloseable { | ||
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| companion object { | ||
| fun jgitToLibChangeType(changeType: ChangeType): DiffEntry.ChangeType { | ||
| return when (changeType) { | ||
| ChangeType.ADD -> DiffEntry.ChangeType.ADD | ||
| ChangeType.RENAME -> DiffEntry.ChangeType.RENAME | ||
| ChangeType.MODIFY -> DiffEntry.ChangeType.MODIFY | ||
| ChangeType.COPY -> DiffEntry.ChangeType.COPY | ||
| ChangeType.DELETE -> DiffEntry.ChangeType.DELETE | ||
| } | ||
| } | ||
| } | ||
|
|
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| private val revWalk = RevWalk(repository) | ||
| private val iterator: Iterator<RevCommit> | ||
| private val reader: ObjectReader = repository.newObjectReader() | ||
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| init { | ||
| val lastCommit = revWalk.parseCommit(repository.resolve(Constants.HEAD)) | ||
| revWalk.markStart(lastCommit) | ||
| val beforeDate = lastCommit.commitDate() | ||
| val afterDate = afterDate(lastCommit) | ||
| revWalk.revFilter = CommitTimeRevFilter.between(afterDate, beforeDate) | ||
| iterator = revWalk.iterator() | ||
| } | ||
|
|
||
| override fun hasNext(): Boolean { | ||
| val hasNext = iterator.hasNext() | ||
| if (!hasNext) { | ||
| close() | ||
| } | ||
| return hasNext | ||
| } | ||
|
|
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| override fun next(): CommitInfo { | ||
| val commit = iterator.next() | ||
| return convertJgitCommit(commit) | ||
| } | ||
|
|
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| private fun getDiffsWithoutText( | ||
| commit: RevCommit, | ||
| reader: ObjectReader, | ||
| repository: Repository, | ||
| ): List<org.eclipse.jgit.diff.DiffEntry> { | ||
| val oldTreeIter = if (commit.parents.isNotEmpty()) { | ||
| val firstParent = commit.parents[0] | ||
| val treeParser = CanonicalTreeParser() | ||
| treeParser.reset(reader, firstParent.tree) | ||
| treeParser | ||
| } else { | ||
| EmptyTreeIterator() | ||
| } | ||
| val newTreeIter = CanonicalTreeParser() | ||
| newTreeIter.reset(reader, commit.tree) | ||
|
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| val treeWalk = TreeWalk(repository) | ||
| treeWalk.isRecursive = true | ||
| treeWalk.addTree(oldTreeIter) | ||
| treeWalk.addTree(newTreeIter) | ||
|
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| val diffFormatter = getDiffFormatter(repository) | ||
| return diffFormatter.scan(oldTreeIter, newTreeIter) | ||
| } | ||
|
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| private fun convertJgitCommit(commit: RevCommit): CommitInfo { | ||
| val authorEmail = commit.authorIdent.emailAddress | ||
| val committerEmail = commit.committerIdent.emailAddress | ||
| val authorCommitTimestamp = commit.authorIdent.`when`.time | ||
| val committerTimestamp = commit.committerIdent.`when`.time | ||
| val diffEntries = getDiffsWithoutText(commit, reader, repository).map { | ||
| DiffEntry( | ||
| it.oldPath, | ||
| it.newPath, | ||
| jgitToLibChangeType(it.changeType), | ||
| ) | ||
| } | ||
| val numOfParents = commit.parents.size | ||
| val fullMessage = commit.fullMessage | ||
|
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| val authorUserInfo = UserInfo(commit.authorIdent.name, authorEmail) | ||
| val committerUserInfo = UserInfo(commit.committerIdent.name, committerEmail) | ||
|
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| val hash = commit.name | ||
|
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| return CommitInfo( | ||
| authorUserInfo, | ||
| committerUserInfo, | ||
| authorCommitTimestamp, | ||
| committerTimestamp, | ||
| diffEntries, | ||
| numOfParents, | ||
| fullMessage, | ||
| hash, | ||
| ) | ||
| } | ||
|
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| private fun getDiffFormatter(repository: Repository): DiffFormatter { | ||
| val diffFormatter = DiffFormatter(NullOutputStream.INSTANCE) | ||
| diffFormatter.setRepository(repository) | ||
| diffFormatter.isDetectRenames = true | ||
| return diffFormatter | ||
| } | ||
|
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| private fun RevCommit.commitDate() = Date(this.commitTime * 1000L) | ||
|
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| private fun afterDate(lastCommit: RevCommit) = | ||
| Date.from(lastCommit.commitDate().toInstant().minus(Duration.ofDays(dayGap))) | ||
|
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| override fun close() { | ||
| revWalk.close() | ||
| } | ||
| } | ||
| } |
72 changes: 72 additions & 0 deletions
72
src/main/kotlin/org/jetbrains/research/ictl/riskypatterns/jgit/FileInfoProvider.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,72 @@ | ||
| package org.jetbrains.research.ictl.riskypatterns.jgit | ||
|
|
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| import org.eclipse.jgit.errors.MissingObjectException | ||
| import org.eclipse.jgit.lib.Constants | ||
| import org.eclipse.jgit.lib.Repository | ||
| import org.eclipse.jgit.revwalk.RevWalk | ||
| import org.eclipse.jgit.treewalk.TreeWalk | ||
| import org.jetbrains.research.ictl.riskypatterns.calculation.BusFactor | ||
| import org.jetbrains.research.ictl.riskypatterns.calculation.entities.FileInfo | ||
|
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| class FileInfoProvider(private val repository: Repository) : Iterable<FileInfo> { | ||
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| override fun iterator(): Iterator<FileInfo> = FilePathToSizeRepoIterator(repository) | ||
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| class FilePathToSizeRepoIterator(repository: Repository) : Iterator<FileInfo>, AutoCloseable { | ||
| private val treeWalk = TreeWalk(repository) | ||
| private val reader = repository.newObjectReader() | ||
| private var value: FileInfo? = null | ||
|
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| init { | ||
| val revWalk = RevWalk(repository) | ||
| val lastCommit = revWalk.use { | ||
| it.parseCommit(repository.resolve(Constants.HEAD)) | ||
| } | ||
| treeWalk.addTree(lastCommit.tree) | ||
| treeWalk.isRecursive = false | ||
|
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| value = lookForValue() | ||
| } | ||
|
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| override fun hasNext(): Boolean { | ||
| val hasNext = value != null | ||
| if (!hasNext) { | ||
| close() | ||
| } | ||
| return hasNext | ||
| } | ||
|
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| override fun next(): FileInfo { | ||
| val v = value | ||
| if (v != null) { | ||
| value = lookForValue() | ||
| return v | ||
| } | ||
| throw Exception("No value found") | ||
| } | ||
|
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| private fun lookForValue(): FileInfo? { | ||
| while (treeWalk.next()) { | ||
| val filePath = treeWalk.pathString | ||
| var bytes = 0L | ||
| try { | ||
| bytes = reader.getObjectSize(treeWalk.getObjectId(0), Constants.OBJ_BLOB) | ||
| if (treeWalk.isSubtree) { | ||
| treeWalk.enterSubtree() | ||
| continue | ||
| } | ||
| } catch (e: MissingObjectException) { | ||
| BusFactor.log.warn("Missing blob : $filePath : ${e.message} ") | ||
| } | ||
| return FileInfo(filePath, bytes) | ||
| } | ||
|
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| return null | ||
| } | ||
|
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| override fun close() { | ||
| treeWalk.close() | ||
| reader.close() | ||
| } | ||
| } | ||
| } |
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