content: /*
   * Copyright 2014-2023 Real Logic Limited.
   *
   * Licensed 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
   *
   * https://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 io.aeron.protocol;
  
  import org.agrona.concurrent.UnsafeBuffer;
  
  import java.nio.ByteBuffer;
  
  import static java.nio.ByteOrder.LITTLE_ENDIAN;
  
  /**
   * HeaderFlyweight for Response Setup Message Frames.
   * <p>
   * <a target="_blank" href="https://github.com/aeron-io/aeron/wiki/Transport-Protocol-Specification#stream-setup">
   *     Stream Response Setup</a> wiki page.
   */
  public class ResponseSetupFlyweight extends HeaderFlyweight
  {
      /**
       * Header length in bytes.
       */
      public static final int HEADER_LENGTH = 20;
  
      /**
       * Offset in the frame at which the session-id field begins.
       */
      private static final int SESSION_ID_FIELD_OFFSET = 8;
  
      /**
       * Offset in the frame at which the stream-id field begins.
       */
      private static final int STREAM_ID_FIELD_OFFSET = 12;
  
      /**
       * Offset in the frame at which the response session-id field begins.
       */
      private static final int RESPONSE_SESSION_ID_FIELD_OFFSET = 16;
  
      /**
       * Default constructor which can later be used to wrap a frame.
       */
      public ResponseSetupFlyweight()
      {
      }
  
      /**
       * Construct the flyweight over a frame.
       *
       * @param buffer containing the frame.
       */
      public ResponseSetupFlyweight(final UnsafeBuffer buffer)
      {
          super(buffer);
      }
  
      /**
       * Construct the flyweight over a frame.
       *
       * @param buffer containing the frame.
       */
      public ResponseSetupFlyweight(final ByteBuffer buffer)
      {
          super(buffer);
      }
  
      /**
       * Get session id field.
       *
       * @return session id field.
       */
      public int sessionId()
      {
          return getInt(SESSION_ID_FIELD_OFFSET, LITTLE_ENDIAN);
      }
  
      /**
       * Set session id field.
       *
       * @param sessionId field value.
       * @return this for a fluent API.
       */
      public ResponseSetupFlyweight sessionId(final int sessionId)
      {
          putInt(SESSION_ID_FIELD_OFFSET, sessionId, LITTLE_ENDIAN);
  
          return this;
      }
  
      /**
       * Get stream id field.
       *
       * @return stream id field.
       */
      public int streamId()
      {
          return getInt(STREAM_ID_FIELD_OFFSET, LITTLE_ENDIAN);
      }
  
      /**
       * Set stream id field.
       *
       * @param streamId field value.
       * @return this for a fluent API.
       */
      public ResponseSetupFlyweight streamId(final int streamId)
      {
          putInt(STREAM_ID_FIELD_OFFSET, streamId, LITTLE_ENDIAN);
  
          return this;
      }
  
      /**
       * Get response session id field.
       *
       * @return response session id field.
       */
      public int responseSessionId()
      {
          return getInt(RESPONSE_SESSION_ID_FIELD_OFFSET, LITTLE_ENDIAN);
      }
  
      /**
       * Set stream id field.
       *
       * @param streamId field value.
       * @return this for a fluent API.
       */
      public ResponseSetupFlyweight responseSessionId(final int streamId)
      {
          putInt(RESPONSE_SESSION_ID_FIELD_OFFSET, streamId, LITTLE_ENDIAN);
  
          return this;
      }
  }
  