/// <summary>
/// Dispatch a descriptor message to a consumer by reading the fields in the correct order.
/// </summary>
/// <param name="decoder"> which wraps the encoded message ready for reading. </param>
/// <param name="consumer"> to which the decoded fields should be passed. </param>
public static void DispatchDescriptor(RecordingDescriptorDecoder decoder, IRecordingDescriptorConsumer consumer)
{
consumer.OnRecordingDescriptor(
decoder.ControlSessionId(),
decoder.CorrelationId(),
decoder.RecordingId(),
decoder.StartTimestamp(),
decoder.StopTimestamp(),
decoder.StartPosition(),
decoder.StopPosition(),
decoder.InitialTermId(),
decoder.SegmentFileLength(),
decoder.TermBufferLength(),
decoder.MtuLength(),
decoder.SessionId(),
decoder.StreamId(),
decoder.StrippedChannel(),
decoder.OriginalChannel(),
decoder.SourceIdentity());
}
public ControlledFragmentHandlerAction OnFragment(IDirectBuffer buffer, int offset, int length, Header header)
{
if (isDispatchComplete)
{
return(ControlledFragmentHandlerAction.ABORT);
}
messageHeaderDecoder.Wrap(buffer, offset);
int schemaId = messageHeaderDecoder.SchemaId();
if (schemaId != MessageHeaderDecoder.SCHEMA_ID)
{
throw new ArchiveException("expected schemaId=" + MessageHeaderDecoder.SCHEMA_ID + ", actual=" +
schemaId);
}
int templateId = messageHeaderDecoder.TemplateId();
switch (templateId)
{
case ControlResponseDecoder.TEMPLATE_ID:
{
controlResponseDecoder.Wrap(
buffer,
offset + MessageHeaderEncoder.ENCODED_LENGTH,
messageHeaderDecoder.BlockLength(),
messageHeaderDecoder.Version());
if (controlResponseDecoder.ControlSessionId() == controlSessionId)
{
ControlResponseCode code = controlResponseDecoder.Code();
long correlationId = controlResponseDecoder.CorrelationId();
if (ControlResponseCode.RECORDING_UNKNOWN == code && correlationId == this.correlationId)
{
isDispatchComplete = true;
return(ControlledFragmentHandlerAction.BREAK);
}
if (ControlResponseCode.ERROR == code)
{
ArchiveException ex = new ArchiveException(
"response for correlationId=" + this.correlationId + ", error: " +
controlResponseDecoder.ErrorMessage(),
(int)controlResponseDecoder.RelevantId(),
correlationId);
if (correlationId == this.correlationId)
{
throw ex;
}
else
{
errorHandler?.Invoke(ex);
}
}
}
break;
}
case RecordingDescriptorDecoder.TEMPLATE_ID:
{
recordingDescriptorDecoder.Wrap(
buffer,
offset + MessageHeaderEncoder.ENCODED_LENGTH,
messageHeaderDecoder.BlockLength(),
messageHeaderDecoder.Version());
long correlationId = recordingDescriptorDecoder.CorrelationId();
if (controlSessionId == recordingDescriptorDecoder.ControlSessionId() &&
correlationId == this.correlationId)
{
consumer.OnRecordingDescriptor(
controlSessionId,
correlationId,
recordingDescriptorDecoder.RecordingId(),
recordingDescriptorDecoder.StartTimestamp(),
recordingDescriptorDecoder.StopTimestamp(),
recordingDescriptorDecoder.StartPosition(),
recordingDescriptorDecoder.StopPosition(),
recordingDescriptorDecoder.InitialTermId(),
recordingDescriptorDecoder.SegmentFileLength(),
recordingDescriptorDecoder.TermBufferLength(),
recordingDescriptorDecoder.MtuLength(),
recordingDescriptorDecoder.SessionId(),
recordingDescriptorDecoder.StreamId(),
recordingDescriptorDecoder.StrippedChannel(),
recordingDescriptorDecoder.OriginalChannel(),
recordingDescriptorDecoder.SourceIdentity());
if (0 == --remainingRecordCount)
{
isDispatchComplete = true;
return(ControlledFragmentHandlerAction.BREAK);
}
}
break;
}
}
return(ControlledFragmentHandlerAction.CONTINUE);
}
public virtual ControlledFragmentHandlerAction OnFragment(IDirectBuffer buffer, int offset, int length, Header header)
{
messageHeaderDecoder.Wrap(buffer, offset);
int templateId = messageHeaderDecoder.TemplateId();
switch (templateId)
{
case ControlResponseDecoder.TEMPLATE_ID:
controlResponseDecoder.Wrap(buffer, offset + MessageHeaderEncoder.ENCODED_LENGTH, messageHeaderDecoder.BlockLength(), messageHeaderDecoder.Version());
if (controlResponseDecoder.ControlSessionId() != controlSessionId)
{
break;
}
ControlResponseCode code = controlResponseDecoder.Code();
if (ControlResponseCode.RECORDING_UNKNOWN == code)
{
isDispatchComplete = true;
return(ControlledFragmentHandlerAction.BREAK);
}
if (ControlResponseCode.ERROR == code)
{
throw new System.InvalidOperationException("response for expectedCorrelationId=" + expectedCorrelationId + ", error: " + controlResponseDecoder.ErrorMessage());
}
break;
case RecordingDescriptorDecoder.TEMPLATE_ID:
recordingDescriptorDecoder.Wrap(buffer, offset + MessageHeaderEncoder.ENCODED_LENGTH, messageHeaderDecoder.BlockLength(), messageHeaderDecoder.Version());
long correlationId = recordingDescriptorDecoder.CorrelationId();
if (controlSessionId != recordingDescriptorDecoder.ControlSessionId() || correlationId != expectedCorrelationId)
{
break;
}
consumer.OnRecordingDescriptor(controlSessionId, correlationId, recordingDescriptorDecoder.RecordingId(), recordingDescriptorDecoder.StartTimestamp(), recordingDescriptorDecoder.StopTimestamp(), recordingDescriptorDecoder.StartPosition(), recordingDescriptorDecoder.StopPosition(), recordingDescriptorDecoder.InitialTermId(), recordingDescriptorDecoder.SegmentFileLength(), recordingDescriptorDecoder.TermBufferLength(), recordingDescriptorDecoder.MtuLength(), recordingDescriptorDecoder.SessionId(), recordingDescriptorDecoder.StreamId(), recordingDescriptorDecoder.StrippedChannel(), recordingDescriptorDecoder.OriginalChannel(), recordingDescriptorDecoder.SourceIdentity());
if (0 == --remainingRecordCount)
{
isDispatchComplete = true;
return(ControlledFragmentHandlerAction.BREAK);
}
break;
default:
throw new System.InvalidOperationException("Unknown templateId: " + templateId);
}
return(ControlledFragmentHandlerAction.CONTINUE);
}