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;
  
  public abstract class ZstdTrait {
    protected static final byte[] MAGIC = new byte[] {'Z', 'S', 'T', 'D', 'B', 'l', 'o', 'c', 'k'};
    protected static final int MAGIC_LENGTH = MAGIC.length;
  
    public static final int HEADER_LENGTH =
        MAGIC_LENGTH // magic bytes
            + 1 // compress method
            + 4 // compressed length
            + 4 // decompressed length
            + 4; // checksum
  
    protected static final int COMPRESSION_METHOD_RAW = 0x10;
    protected static final int COMPRESSION_METHOD_ZSTD = 0x30;
  }
  