private static async Task HandleExceptionAsync(HttpContext context, Exception exception, ILogEngine logEngine)
{
var code = HttpStatusCode.InternalServerError;
var error = exception.Message;
if (exception is ResourceExistedException)
{
code = HttpStatusCode.Conflict;
}
else if (exception is PaymentRequiredException)
{
code = HttpStatusCode.PaymentRequired;
}
else if (exception is UnauthorizedException)
{
code = HttpStatusCode.Unauthorized;
}
else if (exception is NotAllowedException)
{
code = HttpStatusCode.Forbidden;
}
else if (exception is NotFoundException)
{
code = HttpStatusCode.NotFound;
}
else if (exception is InvalidParameterException)
{
code = HttpStatusCode.BadRequest;
}
else if (exception is DbUpdateConcurrencyException)
{
code = HttpStatusCode.RequestTimeout; error = "Db update concurrent conflict. Please retry";
}
else
{
logEngine.LogException(exception);
error = "Unexpected error";
}
var result = JsonConvert.SerializeObject(new { error = error });
context.Response.ContentType = "application/json";
context.Response.StatusCode = (int)code;
await context.Response.WriteAsync(result);
}
/// <summary>
/// Записывает в журнал сообщение об исключении
/// </summary>
/// <param name="type">Тип журнала</param>
/// <param name="level">Уровень сообщения</param>
/// <param name="exception">Исключение</param>
/// <param name="message">Сообщение</param>
/// <param name="parameters">Параметры формирования сообщения</param>
private static void LogException(LogType type, LogLevel level, Exception exception, string message, params object[] parameters)
{
try
{
ILogEngine logger = GetLogger(type);
if (logger == null)
{
return;
}
logger.LogException(level, exception, message, parameters);
}
catch (Exception le)
{
if (type != LogType.System)
{
Logger.LogException(LogType.System, LogLevel.Error, le, "Ошибка при записи в журнал {0}", type);
}
throw;
}
}