How to use

messageOffset

method

in

io.zeebe.dispatcher.impl.log.DataFrameDescriptor

public void wrap(final DirectBuffer buffer, final int offset) {
 this.fragmentOffset = offset;
 this.messageOffset = messageOffset(fragmentOffset);
 this.buffer = buffer;
}

public void wrap(final DirectBuffer buffer, final int offset) {
 this.fragmentOffset = offset;
 this.messageOffset = messageOffset(fragmentOffset);
 this.buffer = buffer;
}

public static long getPosition(final DirectBuffer buffer, final int offset) {
 return buffer.getLong(positionOffset(messageOffset(offset)), Protocol.ENDIANNESS);
}

public static long getPosition(final DirectBuffer buffer, final int offset) {
 return buffer.getLong(positionOffset(messageOffset(offset)), Protocol.ENDIANNESS);
}

 @Override
 public DirectBuffer next() {
  final int framedFragmentLength =
    bufferView.getInt(DataFrameDescriptor.lengthOffset(iterationOffset));
  final int fragmentLength = DataFrameDescriptor.messageLength(framedFragmentLength);
  final int messageOffset = DataFrameDescriptor.messageOffset(iterationOffset);
  buffer.wrap(bufferView, messageOffset, fragmentLength);
  iterationOffset += DataFrameDescriptor.alignedLength(framedFragmentLength);
  return buffer;
 }
}

 @Override
 public DirectBuffer next() {
  final int framedFragmentLength =
    bufferView.getInt(DataFrameDescriptor.lengthOffset(iterationOffset));
  final int fragmentLength = DataFrameDescriptor.messageLength(framedFragmentLength);
  final int messageOffset = DataFrameDescriptor.messageOffset(iterationOffset);
  buffer.wrap(bufferView, messageOffset, fragmentLength);
  iterationOffset += DataFrameDescriptor.alignedLength(framedFragmentLength);
  return buffer;
 }
}

  channelReadBufferView.getInt(DataFrameDescriptor.lengthOffset(offset));
final int msgLength = DataFrameDescriptor.messageLength(framedLength);
final int msgOffset = DataFrameDescriptor.messageOffset(offset);
final int frameLength = DataFrameDescriptor.alignedLength(framedLength);

  channelReadBufferView.getInt(DataFrameDescriptor.lengthOffset(offset));
final int msgLength = DataFrameDescriptor.messageLength(framedLength);
final int msgOffset = DataFrameDescriptor.messageOffset(offset);
final int frameLength = DataFrameDescriptor.alignedLength(framedLength);

@SuppressWarnings("restriction")
public int appendFrame(
  final LogBufferPartition partition,
  final int activePartitionId,
  final DirectBuffer msg,
  final int start,
  final int length,
  final int streamId) {
 final int partitionSize = partition.getPartitionSize();
 final int framedLength = framedLength(length);
 final int alignedFrameLength = alignedLength(framedLength);
 // move the tail of the partition
 final int frameOffset = partition.getAndAddTail(alignedFrameLength);
 int newTail = frameOffset + alignedFrameLength;
 if (newTail <= (partitionSize - HEADER_LENGTH)) {
  final UnsafeBuffer buffer = partition.getDataBuffer();
  // write negative length field
  buffer.putIntOrdered(lengthOffset(frameOffset), -framedLength);
  UNSAFE.storeFence();
  buffer.putShort(typeOffset(frameOffset), TYPE_MESSAGE);
  buffer.putInt(streamIdOffset(frameOffset), streamId);
  buffer.putBytes(messageOffset(frameOffset), msg, start, length);
  // commit the message
  buffer.putIntOrdered(lengthOffset(frameOffset), framedLength);
 } else {
  newTail = onEndOfPartition(partition, frameOffset);
 }
 return newTail;
}

@SuppressWarnings("restriction")
public int appendFrame(
  final LogBufferPartition partition,
  final int activePartitionId,
  final DirectBuffer msg,
  final int start,
  final int length,
  final int streamId) {
 final int partitionSize = partition.getPartitionSize();
 final int framedLength = framedLength(length);
 final int alignedFrameLength = alignedLength(framedLength);
 // move the tail of the partition
 final int frameOffset = partition.getAndAddTail(alignedFrameLength);
 int newTail = frameOffset + alignedFrameLength;
 if (newTail <= (partitionSize - HEADER_LENGTH)) {
  final UnsafeBuffer buffer = partition.getDataBuffer();
  // write negative length field
  buffer.putIntOrdered(lengthOffset(frameOffset), -framedLength);
  UNSAFE.storeFence();
  buffer.putShort(typeOffset(frameOffset), TYPE_MESSAGE);
  buffer.putInt(streamIdOffset(frameOffset), streamId);
  buffer.putBytes(messageOffset(frameOffset), msg, start, length);
  // commit the message
  buffer.putIntOrdered(lengthOffset(frameOffset), framedLength);
 } else {
  newTail = onEndOfPartition(partition, frameOffset);
 }
 return newTail;
}

final int handlerResult =
  frgHandler.onFragment(
    buffer, messageOffset(fragmentOffset), messageLength, streamId, isMarkedAsFailed);

final int handlerResult =
  frgHandler.onFragment(
    buffer, messageOffset(fragmentOffset), messageLength, streamId, isMarkedAsFailed);