content: /*
   * 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.celeborn.client.compress;
  
  import org.apache.celeborn.common.CelebornConf;
  import org.apache.celeborn.common.protocol.CompressionCodec;
  
  public interface Compressor {
  
    void initCompressBuffer(int maxDestLength);
  
    void compress(byte[] data, int offset, int length);
  
    int getCompressedTotalSize();
  
    byte[] getCompressedBuffer();
  
    default void writeIntLE(int i, byte[] buf, int off) {
      buf[off++] = (byte) i;
      buf[off++] = (byte) (i >>> 8);
      buf[off++] = (byte) (i >>> 16);
      buf[off++] = (byte) (i >>> 24);
    }
  
    static Compressor getCompressor(CelebornConf conf) {
      CompressionCodec codec = conf.shuffleCompressionCodec();
      int blockSize = conf.clientPushBufferMaxSize();
      switch (codec) {
        case LZ4:
          return new Lz4Compressor(blockSize);
        case ZSTD:
          int zstdLevel = conf.shuffleCompressionZstdCompressLevel();
          return new ZstdCompressor(blockSize, zstdLevel);
        default:
          throw new IllegalArgumentException("Unknown compression codec: " + codec);
      }
    }
  }
  