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src/main/scala/org/embulk/output/s3_parquet/CatalogRegistrator.scala
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| Original file line number | Diff line number | Diff line change |
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| package org.embulk.output.s3_parquet | ||
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| import java.util.{Optional, Map => JMap} | ||
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| import com.amazonaws.services.glue.model.{Column, CreateTableRequest, DeleteTableRequest, GetTableRequest, SerDeInfo, StorageDescriptor, TableInput} | ||
| import org.apache.parquet.hadoop.metadata.CompressionCodecName | ||
| import org.embulk.config.{Config, ConfigDefault, ConfigException} | ||
| import org.embulk.output.s3_parquet.aws.Aws | ||
| import org.embulk.output.s3_parquet.CatalogRegistrator.ColumnOptions | ||
| import org.embulk.spi.Schema | ||
| import org.embulk.spi.`type`.{BooleanType, DoubleType, JsonType, LongType, StringType, TimestampType, Type} | ||
| import org.slf4j.{Logger, LoggerFactory} | ||
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| import scala.jdk.CollectionConverters._ | ||
| import scala.util.Try | ||
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| object CatalogRegistrator | ||
| { | ||
| trait Task | ||
| extends org.embulk.config.Task | ||
| { | ||
| @Config("catalog_id") | ||
| @ConfigDefault("null") | ||
| def getCatalogId: Optional[String] | ||
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| @Config("database") | ||
| def getDatabase: String | ||
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| @Config("table") | ||
| def getTable: String | ||
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| @Config("column_options") | ||
| @ConfigDefault("{}") | ||
| def getColumnOptions: JMap[String, ColumnOptions] | ||
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| @Config("operation_if_exists") | ||
| @ConfigDefault("\"delete\"") | ||
| def getOperationIfExists: String | ||
| } | ||
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| trait ColumnOptions | ||
| { | ||
| @Config("type") | ||
| def getType: String | ||
| } | ||
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| def apply(aws: Aws, | ||
| task: Task, | ||
| schema: Schema, | ||
| location: String, | ||
| compressionCodec: CompressionCodecName, | ||
| loggerOption: Option[Logger] = None): CatalogRegistrator = | ||
| { | ||
| new CatalogRegistrator(aws, task, schema, location, compressionCodec, loggerOption) | ||
| } | ||
| } | ||
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| class CatalogRegistrator(aws: Aws, | ||
| task: CatalogRegistrator.Task, | ||
| schema: Schema, | ||
| location: String, | ||
| compressionCodec: CompressionCodecName, | ||
| loggerOption: Option[Logger] = None) | ||
| { | ||
| val logger: Logger = loggerOption.getOrElse(LoggerFactory.getLogger(classOf[CatalogRegistrator])) | ||
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| def run(): Unit = | ||
| { | ||
| if (doesTableExists()) { | ||
| task.getOperationIfExists match { | ||
| case "skip" => | ||
| logger.info(s"Skip to register the table: ${task.getDatabase}.${task.getTable}") | ||
| return | ||
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| case "delete" => | ||
| logger.info(s"Delete the table: ${task.getDatabase}.${task.getTable}") | ||
| deleteTable() | ||
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| case unknown => | ||
| throw new ConfigException(s"Unsupported operation: $unknown") | ||
| } | ||
| } | ||
| registerNewParquetTable() | ||
| showNewTableInfo() | ||
| } | ||
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| def showNewTableInfo(): Unit = | ||
| { | ||
| val req = new GetTableRequest() | ||
| task.getCatalogId.ifPresent(cid => req.setCatalogId(cid)) | ||
| req.setDatabaseName(task.getDatabase) | ||
| req.setName(task.getTable) | ||
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| val t = aws.withGlue(_.getTable(req)).getTable | ||
| logger.info(s"Created a table: ${t.toString}") | ||
| } | ||
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| def doesTableExists(): Boolean = | ||
| { | ||
| val req = new GetTableRequest() | ||
| task.getCatalogId.ifPresent(cid => req.setCatalogId(cid)) | ||
| req.setDatabaseName(task.getDatabase) | ||
| req.setName(task.getTable) | ||
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| Try(aws.withGlue(_.getTable(req))).isSuccess | ||
| } | ||
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| def deleteTable(): Unit = | ||
| { | ||
| val req = new DeleteTableRequest() | ||
| task.getCatalogId.ifPresent(cid => req.setCatalogId(cid)) | ||
| req.setDatabaseName(task.getDatabase) | ||
| req.setName(task.getTable) | ||
| aws.withGlue(_.deleteTable(req)) | ||
| } | ||
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| def registerNewParquetTable(): Unit = | ||
| { | ||
| logger.info(s"Create a new table: ${task.getDatabase}.${task.getTable}") | ||
| val req = new CreateTableRequest() | ||
| task.getCatalogId.ifPresent(cid => req.setCatalogId(cid)) | ||
| req.setDatabaseName(task.getDatabase) | ||
| req.setTableInput(new TableInput() | ||
| .withName(task.getTable) | ||
| .withDescription("Created by embulk-output-s3_parquet") | ||
| .withTableType("EXTERNAL_TABLE") | ||
| .withParameters(Map("EXTERNAL" -> "TRUE", | ||
| "classification" -> "parquet", | ||
| "parquet.compression" -> compressionCodec.name()).asJava) | ||
| .withStorageDescriptor(new StorageDescriptor() | ||
| .withColumns(getGlueSchema: _*) | ||
| .withLocation(location) | ||
| .withCompressed(isCompressed) | ||
| .withInputFormat("org.apache.hadoop.hive.ql.io.parquet.MapredParquetInputFormat") | ||
| .withOutputFormat("org.apache.hadoop.hive.ql.io.parquet.MapredParquetOutputFormat") | ||
| .withSerdeInfo(new SerDeInfo() | ||
| .withSerializationLibrary("org.apache.hadoop.hive.ql.io.parquet.serde.ParquetHiveSerDe") | ||
| .withParameters(Map("serialization.format" -> "1").asJava) | ||
| ) | ||
| ) | ||
| ) | ||
| aws.withGlue(_.createTable(req)) | ||
| } | ||
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| private def getGlueSchema: Seq[Column] = | ||
| { | ||
| val columnOptions: Map[String, ColumnOptions] = task.getColumnOptions.asScala.toMap | ||
| schema.getColumns.asScala.toSeq.map { c => | ||
| val cType: String = | ||
| if (columnOptions.contains(c.getName)) columnOptions(c.getName).getType | ||
| else convertEmbulkType2GlueType(c.getType) | ||
| new Column() | ||
| .withName(c.getName) | ||
| .withType(cType) | ||
| } | ||
| } | ||
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| private def convertEmbulkType2GlueType(t: Type): String = | ||
| { | ||
| t match { | ||
| case _: BooleanType => "boolean" | ||
| case _: LongType => "bigint" | ||
| case _: DoubleType => "double" | ||
| case _: StringType => "string" | ||
| case _: TimestampType => "string" | ||
| case _: JsonType => "string" | ||
| case unknown => throw new ConfigException(s"Unsupported embulk type: ${unknown.getName}") | ||
| } | ||
| } | ||
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| private def isCompressed: Boolean = | ||
| { | ||
| !compressionCodec.equals(CompressionCodecName.UNCOMPRESSED) | ||
| } | ||
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| } |
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