ai.h2o.sparkling.ml.models.HasBinaryModel.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,
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* See the License for the specific language governing permissions and
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package ai.h2o.sparkling.ml.models
import java.io.{File, FileInputStream, InputStream}
import ai.h2o.sparkling.utils.SparkSessionUtils
import ai.h2o.sparkling.utils.ScalaUtils.withResource
import org.apache.spark.SparkFiles
private[models] trait HasBinaryModel {
private var binaryModelFileName: Option[String] = None
private[sparkling] def setBinaryModel(model: InputStream): this.type =
setBinaryModel(model, binaryModelName = "binaryModel")
private[sparkling] def setBinaryModel(model: InputStream, binaryModelName: String): this.type = {
val modelFile = SparkSessionUtils.inputStreamToTempFile(model, binaryModelName, ".bin")
setBinaryModel(modelFile)
this
}
private[sparkling] def setBinaryModel(model: File): this.type = {
val sparkSession = SparkSessionUtils.active
binaryModelFileName = Some(model.getName)
if (getBinaryModel().isDefined && getBinaryModel().get.exists()) {
// Copy content to a new temp file
withResource(new FileInputStream(model)) { inputStream =>
setBinaryModel(inputStream, binaryModelFileName.get)
}
} else {
sparkSession.sparkContext.addFile(model.getAbsolutePath)
}
this
}
private[sparkling] def getBinaryModel(): Option[File] =
binaryModelFileName.map(path => new File(SparkFiles.get(path)))
}