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DatabricksPlugin.scala
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DatabricksPlugin.scala
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/*
* Copyright 2020 ABSA Group Limited
*
* Licensed 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 za.co.absa.spline.harvester.plugin.embedded
import org.apache.spark.sql.catalyst.catalog.CatalogTable
import org.apache.spark.sql.catalyst.plans.logical.LogicalPlan
import org.apache.spark.sql.{SaveMode, SparkSession}
import za.co.absa.spline.agent.SplineAgent.FuncName
import za.co.absa.spline.commons.reflect.ReflectionUtils.extractValue
import za.co.absa.spline.commons.reflect.extractors.SafeTypeMatchingExtractor
import za.co.absa.spline.harvester.plugin.Plugin.{Precedence, WriteNodeInfo}
import za.co.absa.spline.harvester.plugin.embedded.DatabricksPlugin.`_: DataBricksCreateDeltaTableCommand`
import za.co.absa.spline.harvester.plugin.extractor.CatalogTableExtractor
import za.co.absa.spline.harvester.plugin.{Plugin, WriteNodeProcessing}
import za.co.absa.spline.harvester.qualifier.PathQualifier
import javax.annotation.Priority
import scala.language.reflectiveCalls
@Priority(Precedence.Normal)
class DatabricksPlugin(
pathQualifier: PathQualifier,
session: SparkSession)
extends Plugin
with WriteNodeProcessing {
private val extractor = new CatalogTableExtractor(session.catalog, pathQualifier)
override val writeNodeProcessor: PartialFunction[(FuncName, LogicalPlan), WriteNodeInfo] = {
case (_, `_: DataBricksCreateDeltaTableCommand`(command)) =>
val table = extractValue[CatalogTable](command, "table")
val saveMode = extractValue[SaveMode](command, "mode")
val query = extractValue[Option[LogicalPlan]](command, "query").get
extractor.asTableWrite(table, saveMode, query)
}
}
object DatabricksPlugin {
private object `_: DataBricksCreateDeltaTableCommand` extends SafeTypeMatchingExtractor[AnyRef](
"com.databricks.sql.transaction.tahoe.commands.CreateDeltaTableCommand")
}