public async Task <TResponse> DeserializeResponseAsync(IResponseFuture inputStream, AsyncOperationInfo operationInfo)
{
var sw = Stopwatch.StartNew();
await ThreadingUtils.ContinueAtThreadPull();
var loggedResponseFuture = new LoggingResponseFutureDecorator(inputStream, MAX_AMOUNT_OF_BYTES_INSIDE_LOG_ENTRY);
TResponse response = null;
using (Logger.Indent)
{
Logger.LogInfo(null, "Чтение ответа...");
try
{
response = await deserializeResponseAsync(loggedResponseFuture, operationInfo);
logDataRead();
}
catch (TimeoutException ex)
{
logError(ex);
response = BuildErrorResponse(RequestStatus.READ_TIMEOUT);
}
catch (Exception ex)
{
logError(ex);
response = BuildErrorResponse(RequestStatus.DESERIALIZATION_ERROR);
}
}
return(response);
void logDataRead()
{
Logger.LogInfo(null, $"Пакет ответа был успешно прочитан{Global.NL}Полная длина: {loggedResponseFuture.ReadCount}, длительность чтения: {sw.Elapsed.TotalMilliseconds.ToString("F2")} мс{getBufferRepresentation()}");
}
void logError(Exception ex)
{
Logger.LogError(null, $"Ошибка во время чтения/десериализации пакета. Было прочитано: {loggedResponseFuture.ReadCount}, длительность чтения: {sw.Elapsed.TotalMilliseconds.ToString("F2")} мс{getBufferRepresentation()}", ex);
}
string getBufferRepresentation()
{
var tooManyData = loggedResponseFuture.StorageCount < loggedResponseFuture.ReadCount;
return($"{Global.NL}Первые {loggedResponseFuture.Capacity} байт из {loggedResponseFuture.ReadCount}".IfOrDefault(tooManyData) +
$"{Global.NL}Данные<HEX>:{loggedResponseFuture.Storage.Select(b => b.ToString("X2").PadLeft(3)).Aggregate(" ")}" +
$"{Global.NL}Данные<DEC>:{loggedResponseFuture.Storage.Select(b => b.ToString("D3").PadLeft(3)).Aggregate(" ")}");
}
}
protected override async Task <SalachovResponse> deserializeResponseAsync(IResponseFuture inputStream, AsyncOperationInfo operationInfo)
{
SalachovResponse result = null;
var answerIterator = new BackedResponseFutureDecorator(inputStream);
if (DeviceId == RUSDeviceId.ALL) // If broadcast
{
Logger.LogInfo(null, "Чтение ответа не требуется, поскольку запрос не предполагает ответа");
result = new SalachovResponse(this, RequestStatus.OK, ResponseData.NONE, ResponseData.NONE, ResponseData.NONE);
}
else
{
var header = await answerIterator.WaitAsync(4, WaitMode.EXACT, operationInfo);
var headerValid = header.SequenceEqual(_header);
var length = _hasLengthField
? bytesToWord(await answerIterator.WaitAsync(2, WaitMode.EXACT, operationInfo))
: 0;
var isLengthValid = _responseFullLength.IsUnknown
? true
: (length + _header.Length + 2 /* CRC */ + (_hasLengthField ? 2 : 0)) == _responseFullLength.Length;
var answerBody = await answerIterator.WaitAsync(length, WaitMode.EXACT, operationInfo);
var calculatedChecksum = _checksum.ComputeChecksum(answerIterator.Storage);
var sentChecksum = bytesToWord(await answerIterator.WaitAsync(2, WaitMode.EXACT, operationInfo));
var isCRCValid = calculatedChecksum == sentChecksum;
if (isCRCValid)
{
if (headerValid)
{
if (isLengthValid)
{
result = instantiateResponse(RequestStatus.OK);
}
else
{
Logger.LogError(null, $"Некорректная длина. Ожидалась: {_responseFullLength.Length.ToString("X2")}, пришла в пакете: {(_hasLengthField ? length.ToString("X2") : "NONE")}");
result = instantiateResponse(RequestStatus.WRONG_LENGTH);
}
}
else
{
Logger.LogError(null, $"Некорректный заголовок. Ожидалась: {_header.ToHex()}, пришла в пакете: {header.ToHex()}");
result = instantiateResponse(RequestStatus.WRONG_HEADER);
}
}
else
{
Logger.LogError(null, $"CRC не совпадает. Ожидалась: {calculatedChecksum.ToString("X2")}, пришла в пакете: {sentChecksum.ToString("X2")}");
result = instantiateResponse(RequestStatus.WRONG_CHECKSUM);
}
SalachovResponse instantiateResponse(RequestStatus status)
{
return(new SalachovResponse(this, status,
new InMemoryResponseData(answerIterator.Storage),
new InMemoryResponseData(header),
new InMemoryResponseData(answerBody)));
}
}
return(result);
}
Task <IResponse> IRequest.DeserializeResponseAsync(IResponseFuture inputStream, AsyncOperationInfo operationInfo)
{
return(DeserializeResponseAsync(inputStream, operationInfo).ThenDo(r => (IResponse)r));
}
protected abstract Task <TResponse> deserializeResponseAsync(
IResponseFuture inputStream,
AsyncOperationInfo operationInfo);
public ResponseFutureProxyBase(IResponseFuture @base)
{
_base = @base ?? throw new ArgumentNullException(nameof(@base));
}
protected override async Task <IResponse> deserializeResponseAsync(IResponseFuture inputStream, AsyncOperationInfo operationInfo)
{
IResponse result = null;
Stream stream = createReadBuffer();
var dataRead = new StreamResponseData(stream);
switch (_responseInfo.ReadMode)
{
case ResponseReadMode.TILL_TIMEOUT:
try
{
var readTimeout = new Timeouter(CHUNK_READ_TIMEOUT);
while (true)
{
var piece = await inputStream.WaitAsync(READ_CHUNK_SIZE, WaitMode.NO_MORE_THAN, operationInfo);
await stream.WriteAsync(piece, 0, piece.Length);
operationInfo.Progress.AddProgress(piece.Length);
if (piece.Length != 0)
{
readTimeout.Restart();
}
readTimeout.ThrowIfTimeout();
}
}
catch (TimeoutException)
{
}
break;
case ResponseReadMode.CONSTRAINED_BY_ANSWER:
var max = _responseInfo.ResponseFullLength.IsUnknown
? long.MaxValue
: _responseInfo.ResponseFullLength.Length;
for (long i = 0; i < max; i++)
{
var data = await inputStream.WaitAsync(1, WaitMode.EXACT, operationInfo);
stream.WriteByte(data.Single());
operationInfo.Progress.AddProgress(1D / max);
}
break;
case ResponseReadMode.READ_BY_TARGET:
result = await _deviceRequest.DeserializeResponseAsync(inputStream, operationInfo);
break;
default:
throw new NotSupportedException();
}
if (result == null)
{
if (!_responseInfo.ResponseFullLength.IsUnknown &&
_responseInfo.ExpectedAnswer != null &&
!stream.AsEnumerable().Take((int)_responseInfo.ResponseFullLength.Length).SequenceEqual(_responseInfo.ExpectedAnswer))
{
result = new FTDIBoxResponse(this, RequestStatus.NOT_EXPECTED_RESPONSE_BYTES, dataRead, null, null);
}
else
{
await stream.FlushAsync(operationInfo.CancellationToken);
IResponseData serviceSection = null;
IResponseData bodySection = null;
switch (Address)
{
case FTDIBoxRequestAddress.HS_SET_LOW_SPEED_MODE:
case FTDIBoxRequestAddress.LS_SET_HIGH_SPEED_MODE:
case FTDIBoxRequestAddress.HS_ACTIVATE_CHANNEL4:
case FTDIBoxRequestAddress.LS_ACTIVATE_CHANNEL4:
break;
case FTDIBoxRequestAddress.HS_GET_FLASH_LENGTH:
case FTDIBoxRequestAddress.HS_READ_ALL_FLASH:
serviceSection = new ResponseDataAreaProxy(dataRead, dataRead.Count - 6, dataRead.Count);
bodySection = new ResponseDataAreaProxy(dataRead, 0, dataRead.Count - 6);
break;
case FTDIBoxRequestAddress.LS_DEVICE_REQUEST:
bodySection = dataRead;
break;
default:
throw new NotSupportedException();
}
result = new FTDIBoxResponse(this, RequestStatus.OK, dataRead, serviceSection, bodySection);
}
}
return(result);
Stream createReadBuffer()
{
Stream buffer = new MemoryStream();
if (Address == FTDIBoxRequestAddress.HS_READ_ALL_FLASH)
{
buffer = _scope.TryGetFirstParameter <FlashDumpStreamParameter>()?.Stream;
if (buffer == null)
{
var path = Path.GetTempFileName();
buffer = File.Open(path, FileMode.Open, FileAccess.ReadWrite, FileShare.Read);
Logger.LogInfo(null, $"Создан буфер чтения по пути {path}");
}
else
{
Logger.LogInfo(null, $"Буфер чтения предоставлен через параметр");
}
}
return(buffer);
}
}
public LoggingResponseFutureDecorator(IResponseFuture @base, int storageCapacity) : base(@base)
{
Capacity = storageCapacity;
}
public BackedResponseFutureDecorator(IResponseFuture @base) : base(@base)
{
}