com.spotify.scio.smb.SmbIO.scala Maven / Gradle / Ivy

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/*
 * Copyright 2023 Spotify AB
 *
 * 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 com.spotify.scio.smb

import com.spotify.scio.ScioContext
import com.spotify.scio.coders.Coder
import com.spotify.scio.io.{KeyedIO, Tap, TapOf, TapT, TestIO}
import com.spotify.scio.util.ScioUtil
import org.apache.beam.sdk.extensions.smb.{BucketShardId, FileOperations}
import org.apache.beam.sdk.extensions.smb.SortedBucketSink.WriteResult
import org.apache.beam.sdk.io.fs.ResourceId
import org.apache.beam.sdk.values.{KV, PCollection, TupleTag}

import scala.jdk.CollectionConverters._

final class SmbIO[K, T](path: String, override val keyBy: T => K)(implicit
  override val keyCoder: Coder[K]
) extends TestIO[T]
    with KeyedIO[T] {
  override type KeyT = K
  override val tapT: TapT.Aux[T, T] = TapOf[T]
  override def testId: String = SmbIO.testId(path)
}

object SmbIO {
  def apply[K: Coder, T](path: String, keyBy: T => K): SmbIO[K, T] =
    new SmbIO[K, T](path, keyBy)

  def testId(paths: String*): String = {
    val normalizedPaths = paths.map(ScioUtil.strippedPath).sorted.mkString(",")
    s"SmbIO($normalizedPaths)"
  }

  private[scio] def tap[T: Coder](
    fileOperations: FileOperations[T],
    writeResult: WriteResult
  ): ScioContext => Tap[T] =
    (sc: ScioContext) => {
      val bucketFiles = sc
        .wrap(
          writeResult
            .expand()
            .get(new TupleTag("WrittenFiles"))
            .asInstanceOf[PCollection[KV[BucketShardId, ResourceId]]]
        )
        .materialize

      bucketFiles.underlying.flatMap(kv => fileOperations.iterator(kv.getValue).asScala)
    }
}