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/*
 * 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.parquet.hadoop.codec;

import com.github.luben.zstd.BufferPool;
import com.github.luben.zstd.ZstdOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import org.apache.hadoop.io.compress.CompressionOutputStream;

public class ZstdCompressorStream extends CompressionOutputStream {

  private ZstdOutputStream zstdOutputStream;

  public ZstdCompressorStream(OutputStream stream, int level, int workers) throws IOException {
    super(stream);
    zstdOutputStream = new ZstdOutputStream(stream, level);
    zstdOutputStream.setWorkers(workers);
  }

  public ZstdCompressorStream(OutputStream stream, BufferPool pool, int level, int workers) throws IOException {
    super(stream);
    zstdOutputStream = new ZstdOutputStream(stream, pool);
    zstdOutputStream.setLevel(level);
    zstdOutputStream.setWorkers(workers);
  }

  public void write(byte[] b, int off, int len) throws IOException {
    zstdOutputStream.write(b, off, len);
  }

  public void write(int b) throws IOException {
    zstdOutputStream.write(b);
  }

  public void finish() throws IOException {
    // no-opt, doesn't apply to ZSTD
  }

  public void resetState() throws IOException {
    // no-opt, doesn't apply to ZSTD
  }

  @Override
  public void flush() throws IOException {
    zstdOutputStream.flush();
  }

  @Override
  public void close() throws IOException {
    try (ZstdOutputStream zos = this.zstdOutputStream) {
      zos.flush();
    }
  }
}