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.kafka.common.protocol;
  
  /**
   * Helper class which facilitates zero-copy network transmission. See {@link SendBuilder}.
   */
  public class MessageSizeAccumulator {
      private int totalSize = 0;
      private int zeroCopySize = 0;
  
      /**
       * Get the total size of the message.
       *
       * @return total size in bytes
       */
      public int totalSize() {
          return totalSize;
      }
  
      /**
       * Size excluding zero copy fields as specified by {@link #zeroCopySize}. This is typically the size of the byte
       * buffer used to serialize messages.
       */
      public int sizeExcludingZeroCopy() {
          return totalSize - zeroCopySize;
      }
  
      public void addZeroCopyBytes(int size) {
          zeroCopySize += size;
          totalSize += size;
      }
  
      public void addBytes(int size) {
          totalSize += size;
      }
  
      public void add(MessageSizeAccumulator size) {
          this.totalSize += size.totalSize;
          this.zeroCopySize += size.zeroCopySize;
      }
  
  }
  