public TdsToken ReadToken(TdsResponseStream stream, Encoding encoder, FormatToken lastFormat)
{
var tokenType = (TokenType)stream.Read();
TdsToken token = null;
TokenDescriptor desc;
if (_tokenDescriptors.TryGetValue(tokenType, out desc))
{
if (desc.Builder == null)
{
token = CreateNotImplementedToken(desc, stream);
}
else
{
//_logger?.LogTrace($"Building token of type {tokenType}");
token = desc.Builder(desc, stream, encoder, lastFormat);
_logger?.LogTrace(token.ToString());
}
}
else
{
_logger?.LogError($"Unknown token of type {tokenType}");
throw new Exception($"Unknown token of type {tokenType}");
}
return(token);
}
private void EnvChangeRecived(TdsToken token)
{
var change = (EnvChangeToken)token;
foreach (var c in change.Changes)
{
switch (c.Type)
{
case EnvChangeToken.EnvType.TDS_ENV_DB:
Database = c.NewValue;
_logger?.LogInformation($"Database changed from {c.OldValue} to {c.NewValue}");
break;
case EnvChangeToken.EnvType.TDS_ENV_LANG:
Language = c.NewValue;
_logger?.LogInformation($"Language changed from {c.OldValue} to {c.NewValue}");
break;
case EnvChangeToken.EnvType.TDS_ENV_CHARSET:
Encoder = GetEncoder(c.NewValue);
_logger?.LogInformation($"Charset changed from {c.OldValue} to {c.NewValue} ({Encoder.WebName})");
break;
case EnvChangeToken.EnvType.TDS_ENV_PACKSIZE:
PacketSize = int.Parse(c.NewValue);
_logger?.LogInformation($"Packet size changed from {c.OldValue} to {c.NewValue}");
break;
default:
_logger?.LogWarning($"Unknown env change {c.Type} from {c.OldValue} to {c.NewValue}");
break;
}
}
}
public IEnumerable <TdsToken> GetResponseStream()
{
FormatToken format = null;
while (true)
{
if (!ResponseAtEnd)
{
TdsToken token = _tokenBuilder.ReadToken(_res, Encoder, format);
if (_tokenHandlers.TryGetValue(token.GetType(), out var handler))
{
handler(token);
}
if (token is FormatToken)
{
format = (FormatToken)token;
}
ResponseAtEnd = token.IsEndOfResponse();
yield return(token);
}
else
{
yield break;
}
}
}
private void TextMsgRecived(TdsToken token)
{
var msg = (TextMessageToken)token;
if (msg.Severity > 10)
{
_logger?.LogError($"Server error: {msg.GetMessage()}");
ResponseMessages.Add(msg);
ResponseIsError = true;
}
else
{
_logger?.LogInformation($"Server info: {msg.GetMessage()}");
ResponseMessages.Add(msg);
}
}
