Github user xwu0226 commented on a diff in the pull request: https://github.com/apache/spark/pull/13212#discussion_r64281350 --- Diff: sql/core/src/main/scala/org/apache/spark/sql/execution/command/resources.scala --- @@ -46,3 +51,52 @@ case class AddFileCommand(path: String) extends RunnableCommand { Seq.empty[Row] } } + +/** + * Return a list of file paths that are added to resources. + * If file paths are provided, return the ones that are added to resources. + */ +case class ListFilesCommand(files: Seq[String] = Seq.empty[String]) extends RunnableCommand { + override val output: Seq[Attribute] = { + AttributeReference("Results", StringType, nullable = false)() :: Nil + } + override def run(sparkSession: SparkSession): Seq[Row] = { + val fileList = sparkSession.sparkContext.listFiles() + if (files.size > 0) { + files.map { f => + val uri = new URI(f) + val schemeCorrectedPath = uri.getScheme match { + case null | "local" => new File(f).getCanonicalFile.toURI.toString + case _ => f + } + new Path(schemeCorrectedPath).toUri.toString + }.collect { + case f if fileList.contains(f) => f + }.map(Row(_)) + } else { + fileList.map(Row(_)) + } + } +} + +/** + * Return a list of jar files that are added to resources. + * If jar files are provided, return the ones that are added to resources. + */ +case class ListJarsCommand(jars: Seq[String] = Seq.empty[String]) extends RunnableCommand { + override val output: Seq[Attribute] = { + AttributeReference("Results", StringType, nullable = false)() :: Nil + } + override def run(sparkSession: SparkSession): Seq[Row] = { + val jarList = sparkSession.sparkContext.listJars() + if (jars.size > 0) { + jars.map { f => + new Path(f).getName + }.flatMap {f => + jarList.filter(_.contains(f)) + }.map(Row(_)) + } else { + jarList.map(Row(_)) + } + } --- End diff -- Yes. this looks nicer. I will update to use this format. Thanks!
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