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.common.network.protocol;
  
  /**
   * SerdeVersion represents which ser/de version the message is deserialized from / will be
   * serialized into. For V1 (used by legacy java engine), the ser/de is dependent on java's
   * serialization stack, and the leading byte would be 0xAC according to Java's serialization stack.
   * For V2 (used by cpp client), the ser/de is language-agnostic, the leading byte would be 0xFF as
   * defined in CelebornCpp module. In this way, messages from/for different version could be
   * distinguished and ser/de accordingly.
   */
  public enum SerdeVersion {
    V1((byte) 0xAC),
    V2((byte) 0xFF);
  
    private final byte marker;
  
    SerdeVersion(byte marker) {
      this.marker = marker;
    }
  
    public byte getMarker() {
      return marker;
    }
  }
  