private void HandleClusterError(Exception error)
{
if (!error.IsClusterError())
{
return;
}
switch (Mode)
{
case AccessMode.Read:
// The user was trying to run a write in a read session
// So inform the user and let him try with a proper session mode
throw new ClientException("Write queries cannot be performed in READ access mode.");
case AccessMode.Write:
// The lead is no longer a leader, a.k.a. the write server no longer accepts writes
// However the server is still available for possible reads.
// Therefore we just remove it from ClusterView but keep it in connection pool.
_errorHandler.OnWriteError(_uri, Database);
throw new SessionExpiredException($"Server at {_uri} no longer accepts writes");
default:
throw new ArgumentOutOfRangeException($"Unsupported mode type {Mode}");
}
}
public override void OnError(Exception error)
{
if (error is ServiceUnavailableException)
{
_errorHandler.OnConnectionError(_uri, error);
throw new SessionExpiredException(
$"Server at {_uri} is no longer available due to error: {error.Message}.", error);
}
else if (error.IsClusterError())
{
switch (_mode)
{
case AccessMode.Read:
// The user was trying to run a write in a read session
// So inform the user and let him try with a proper session mode
throw new ClientException("Write queries cannot be performed in READ access mode.");
case AccessMode.Write:
// The lead is no longer a leader, a.k.a. the write server no longer accepts writes
// However the server is still available for possible reads.
// Therefore we just remove it from ClusterView but keep it in connection pool.
_errorHandler.OnWriteError(_uri);
throw new SessionExpiredException($"Server at {_uri} no longer accepts writes");
default:
throw new ArgumentOutOfRangeException($"Unsupported mode type {_mode}");
}
}
throw error;
}
