How to use

getMessageBufferList

method

in

org.apache.rocketmq.store.GetMessageResult

@Override
public long position() {
  int pos = byteBufferHeader.position();
  List<ByteBuffer> messageBufferList = this.getMessageResult.getMessageBufferList();
  for (ByteBuffer bb : messageBufferList) {
    pos += bb.position();
  }
  return pos;
}

@Override
public long transferTo(WritableByteChannel target, long position) throws IOException {
  if (this.byteBufferHeader.hasRemaining()) {
    transferred += target.write(this.byteBufferHeader);
    return transferred;
  } else {
    List<ByteBuffer> messageBufferList = this.getMessageResult.getMessageBufferList();
    for (ByteBuffer bb : messageBufferList) {
      if (bb.hasRemaining()) {
        transferred += target.write(bb);
        return transferred;
      }
    }
  }
  return 0;
}

private List<MessageExt> decodeMsgList(GetMessageResult getMessageResult) {
  List<MessageExt> foundList = new ArrayList<>();
  try {
    List<ByteBuffer> messageBufferList = getMessageResult.getMessageBufferList();
    for (ByteBuffer bb : messageBufferList) {
      MessageExt msgExt = MessageDecoder.decode(bb);
      foundList.add(msgExt);
    }
  } finally {
    getMessageResult.release();
  }
  return foundList;
}

private byte[] readGetMessageResult(final GetMessageResult getMessageResult, final String group, final String topic,
  final int queueId) {
  final ByteBuffer byteBuffer = ByteBuffer.allocate(getMessageResult.getBufferTotalSize());
  long storeTimestamp = 0;
  try {
    List<ByteBuffer> messageBufferList = getMessageResult.getMessageBufferList();
    for (ByteBuffer bb : messageBufferList) {
      byteBuffer.put(bb);
      storeTimestamp = bb.getLong(MessageDecoder.MESSAGE_STORE_TIMESTAMP_POSTION);
    }
  } finally {
    getMessageResult.release();
  }
  this.brokerController.getBrokerStatsManager().recordDiskFallBehindTime(group, topic, queueId, this.brokerController.getMessageStore().now() - storeTimestamp);
  return byteBuffer.array();
}

@Override
public long position() {
  int pos = byteBufferHeader.position();
  List<ByteBuffer> messageBufferList = this.getMessageResult.getMessageBufferList();
  for (ByteBuffer bb : messageBufferList) {
    pos += bb.position();
  }
  return pos;
}

@Override
public long transferTo(WritableByteChannel target, long position) throws IOException {
  if (this.byteBufferHeader.hasRemaining()) {
    transferred += target.write(this.byteBufferHeader);
    return transferred;
  } else {
    List<ByteBuffer> messageBufferList = this.getMessageResult.getMessageBufferList();
    for (ByteBuffer bb : messageBufferList) {
      if (bb.hasRemaining()) {
        transferred += target.write(bb);
        return transferred;
      }
    }
  }
  return 0;
}

private byte[] readGetMessageResult(final GetMessageResult getMessageResult, final String group, final String topic,
  final int queueId) {
  final ByteBuffer byteBuffer = ByteBuffer.allocate(getMessageResult.getBufferTotalSize());
  long storeTimestamp = 0;
  try {
    List<ByteBuffer> messageBufferList = getMessageResult.getMessageBufferList();
    for (ByteBuffer bb : messageBufferList) {
      byteBuffer.put(bb);
      storeTimestamp = bb.getLong(MessageDecoder.MESSAGE_STORE_TIMESTAMP_POSTION);
    }
  } finally {
    getMessageResult.release();
  }
  this.brokerController.getBrokerStatsManager().recordDiskFallBehindTime(group, topic, queueId, this.brokerController.getMessageStore().now() - storeTimestamp);
  return byteBuffer.array();
}

@Override
public long position() {
  int pos = byteBufferHeader.position();
  List<ByteBuffer> messageBufferList = this.getMessageResult.getMessageBufferList();
  for (ByteBuffer bb : messageBufferList) {
    pos += bb.position();
  }
  return pos;
}

@Override
public long transferTo(WritableByteChannel target, long position) throws IOException {
  if (this.byteBufferHeader.hasRemaining()) {
    transferred += target.write(this.byteBufferHeader);
    return transferred;
  } else {
    List<ByteBuffer> messageBufferList = this.getMessageResult.getMessageBufferList();
    for (ByteBuffer bb : messageBufferList) {
      if (bb.hasRemaining()) {
        transferred += target.write(bb);
        return transferred;
      }
    }
  }
  return 0;
}

private List<MessageExt> decodeMsgList(GetMessageResult getMessageResult) {
  List<MessageExt> foundList = new ArrayList<>();
  try {
    List<ByteBuffer> messageBufferList = getMessageResult.getMessageBufferList();
    for (ByteBuffer bb : messageBufferList) {
      MessageExt msgExt = MessageDecoder.decode(bb);
      foundList.add(msgExt);
    }
  } finally {
    getMessageResult.release();
  }
  return foundList;
}

private byte[] readGetMessageResult(final GetMessageResult getMessageResult, final String group, final String topic,
  final int queueId) {
  final ByteBuffer byteBuffer = ByteBuffer.allocate(getMessageResult.getBufferTotalSize());
  long storeTimestamp = 0;
  try {
    List<ByteBuffer> messageBufferList = getMessageResult.getMessageBufferList();
    for (ByteBuffer bb : messageBufferList) {
      byteBuffer.put(bb);
      storeTimestamp = bb.getLong(MessageDecoder.MESSAGE_STORE_TIMESTAMP_POSTION);
    }
  } finally {
    getMessageResult.release();
  }
  this.brokerController.getBrokerStatsManager().recordDiskFallBehindTime(group, topic, queueId, this.brokerController.getMessageStore().now() - storeTimestamp);
  return byteBuffer.array();
}