org.apache.spark.sql.execution.command.resources.scala Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.spark.sql.execution.command
import java.io.File
import java.net.URI
import org.apache.hadoop.fs.Path
import org.apache.spark.sql.{Row, SparkSession}
import org.apache.spark.sql.catalyst.expressions.{Attribute, AttributeReference}
import org.apache.spark.sql.types.{IntegerType, StringType, StructField, StructType}
/**
* Adds a jar to the current session so it can be used (for UDFs or serdes).
*/
case class AddJarCommand(path: String) extends RunnableCommand {
override val output: Seq[Attribute] = {
val schema = StructType(
StructField("result", IntegerType, nullable = false) :: Nil)
schema.toAttributes
}
override def run(sparkSession: SparkSession): Seq[Row] = {
sparkSession.sessionState.resourceLoader.addJar(path)
Seq(Row(0))
}
}
/**
* Adds a file to the current session so it can be used.
*/
case class AddFileCommand(path: String) extends RunnableCommand {
override def run(sparkSession: SparkSession): Seq[Row] = {
sparkSession.sparkContext.addFile(path)
Seq.empty[Row]
}
}
/**
* Returns 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(_))
}
}
}
/**
* Returns 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.nonEmpty) {
for {
jarName <- jars.map(f => new Path(f).getName)
jarPath <- jarList if jarPath.contains(jarName)
} yield Row(jarPath)
} else {
jarList.map(Row(_))
}
}
}