/*
 * 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.connect.client

import java.io.{ByteArrayOutputStream, File, FileOutputStream, ObjectOutputStream}

import org.apache.spark.sql.catalyst.encoders.AgnosticEncoders.PrimitiveIntEncoder
import org.apache.spark.sql.connect.common.UdfPacket

/**
 * Generates the serialized UdfPacket binary used by UDFClassLoadingE2ESuite.
 * Run at build time via TestJarTask.buildJarAndRun.
 */
object StubClassDummyUdfPacker {
  def main(args: Array[String]): Unit = {
    val packet = new UdfPacket(
      new StubClassDummyUdf().udf,
      Seq(PrimitiveIntEncoder),
      PrimitiveIntEncoder)
    val bos = new ByteArrayOutputStream()
    val oos = new ObjectOutputStream(bos)
    oos.writeObject(packet)
    oos.flush()
    val fos = new FileOutputStream(new File(args(0)))
    try { fos.write(bos.toByteArray) } finally { fos.close() }
  }
}
