public async Task Invoke(HttpContext context)
{
try
{
await _next(context);
}
catch (Exception ex)
{
try
{
context.TraceIdentifier = Guid.NewGuid().ToString();
_logger.LogError(context.TraceIdentifier, ex);
}
catch (Exception ex2)
{
_logger.LogError(0, ex2, "An exception was thrown attempting to execute the error handler.");
}
}
try
{
await _next.Invoke(context);
}
catch (Exception ex)
{
context.TraceIdentifier = Guid.NewGuid().ToString();
_logger.LogError(context.TraceIdentifier, ex, ex.Message);
context.Response.StatusCode = 500;
}
if (!context.Response.HasStarted && context.Response.StatusCode != StatusCodes.Status204NoContent)
{
context.Response.ContentType = "application/json";
ResponseDTO response;
switch (context.Response.StatusCode)
{
case 401:
response = ResponseDTO.Fail("User not authenticated");
break;
case 403:
response = ResponseDTO.Fail("User not authorized");
break;
default:
response = ResponseDTO.FailWithRequestId(context.TraceIdentifier, "An error has ocurred.");
break;
}
var json = JsonConvert.SerializeObject(response, new JsonSerializerSettings {
ContractResolver = new CamelCasePropertyNamesContractResolver()
});
await context.Response.WriteAsync(json);
}
}