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;
  
  import org.apache.kafka.common.Uuid;
  import org.apache.kafka.common.record.BaseRecords;
  import org.apache.kafka.common.record.MemoryRecords;
  import org.apache.kafka.common.record.UnalignedMemoryRecords;
  
  import java.nio.ByteBuffer;
  
  public interface Writable {
      void writeByte(byte val);
      void writeShort(short val);
      void writeInt(int val);
      void writeLong(long val);
      void writeDouble(double val);
      void writeByteArray(byte[] arr);
      void writeUnsignedVarint(int i);
      void writeByteBuffer(ByteBuffer buf);
      void writeVarint(int i);
      void writeVarlong(long i);
  
      default void writeRecords(BaseRecords records) {
          if (records instanceof MemoryRecords) {
              MemoryRecords memRecords = (MemoryRecords) records;
              writeByteBuffer(memRecords.buffer());
          } else if (records instanceof UnalignedMemoryRecords) {
              UnalignedMemoryRecords memRecords = (UnalignedMemoryRecords) records;
              writeByteBuffer(memRecords.buffer());
          } else {
              throw new UnsupportedOperationException("Unsupported record type " + records.getClass());
          }
      }
  
      default void writeUuid(Uuid uuid) {
          writeLong(uuid.getMostSignificantBits());
          writeLong(uuid.getLeastSignificantBits());
      }
  
      default void writeUnsignedShort(int i) {
          // The setter functions in the generated code prevent us from setting
          // ints outside the valid range of a short.
          writeShort((short) i);
      }
  
      default void writeUnsignedInt(long i) {
          writeInt((int) i);
      }
  }
  