/**
  * 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.iotdb.tsfile

import org.apache.hadoop.io.NullWritable
import org.apache.hadoop.mapreduce.{RecordWriter, TaskAttemptContext}
import org.apache.iotdb.tsfile.io.TsFileOutputFormat
import org.apache.iotdb.tsfile.write.record.TSRecord
import org.apache.spark.sql.execution.datasources.OutputWriter
import org.apache.spark.sql.types._
import org.apache.spark.sql.catalyst.InternalRow

private[tsfile] class TsFileOutputWriter(
                                          pathStr: String,
                                          dataSchema: StructType,
                                          options: Map[String, String],
                                          context: TaskAttemptContext) extends OutputWriter {

  private val recordWriter: RecordWriter[NullWritable, TSRecord] = {
    val fileSchema = Converter.toTsFileSchema(dataSchema, options)
    new TsFileOutputFormat(fileSchema).getRecordWriter(context)
  }

  override def write(row: InternalRow): Unit = {
    if (row != null) {
      val tsRecord = Converter.toTsRecord(row, dataSchema)
      tsRecord.foreach(r => {
        recordWriter.write(NullWritable.get(), r)
      })
    }
  }

  override def close(): Unit = {
    recordWriter.close(context)
  }
}
