public RestApiException(HttpResponseStatusCode statusCode, string reasonPhrase, RestApiErrorJsonModel errorModel)
: base(GetErrorMessage(statusCode, reasonPhrase, errorModel))
{
StatusCode = statusCode;
ReasonPhrase = reasonPhrase;
ErrorModel = errorModel;
}
private async ValueTask <Stream> InternalExecuteAsync(FormattedRoute route, IRestRequestContent content, IRestRequestOptions options)
{
content?.Validate();
var request = new DefaultRestRequest(route, content, options);
var defaultOptions = options as DefaultRestRequestOptions;
defaultOptions?.RequestAction?.Invoke(request);
await RateLimiter.EnqueueRequestAsync(request).ConfigureAwait(false);
var response = await request.WaitForCompletionAsync().ConfigureAwait(false);
defaultOptions?.HeadersAction?.Invoke(new DefaultRestResponseHeaders(response.HttpResponse.Headers));
var responseStream = await response.HttpResponse.ReadAsync().ConfigureAwait(false);
var statusCode = (int)response.HttpResponse.Code;
if (statusCode > 199 && statusCode < 300)
{
return(responseStream);
}
if (statusCode > 499 && statusCode < 600)
{
throw new RestApiException(response.HttpResponse.Code, response.HttpResponse.ReasonPhrase, null);
}
RestApiErrorJsonModel errorModel = null;
try
{
errorModel = Serializer.Deserialize <RestApiErrorJsonModel>(responseStream);
}
catch (Exception ex)
{
Logger.LogError(ex, "An exception occurred while attempting to deserialize the error model.");
}
finally
{
await responseStream.DisposeAsync().ConfigureAwait(false);
}
throw new RestApiException(response.HttpResponse.Code, response.HttpResponse.ReasonPhrase, errorModel);
}
private static string GetMessage(HttpResponseStatusCode statusCode, RestApiErrorJsonModel errorModel)
{
// We create an easily readable exception message, example:
// HTTP: 400 BadRequest. Error message: Invalid Form Body
var message = $"HTTP: {(Enum.IsDefined(statusCode) ? $"{(int) statusCode} {statusCode}" : statusCode)}. Error message: {errorModel.Message}";
// We check if Discord provided more detailed error messages.
if (errorModel.ExtensionData.TryGetValue("errors", out var errors) && errors is IJsonObject errorsObject)
{
// We extract the errors from the structure shown below.
var extracted = ExtractErrors(errorsObject);
// We append the errors the message created above, example:
// embed.fields[0].name: "Must be 256 or fewer in length."
// embed.fields[1].value: "This field is required"
message += $"\n{string.Join('\n', extracted.Select(x => $"{x.Key}: {x.Value ?? "unknown error"}"))}";
}
public RestApiException(HttpResponseStatusCode statusCode, RestApiErrorJsonModel errorModel)
: base($"HTTP {(Enum.IsDefined(statusCode) ? $"{(int) statusCode} {statusCode}" : statusCode)}. Error message: {errorModel.Message}")
{
StatusCode = statusCode;
ErrorModel = errorModel;
}
public RestApiException(HttpResponseStatusCode statusCode, RestApiErrorJsonModel errorModel)
: base(GetMessage(statusCode, errorModel))
{
StatusCode = statusCode;
ErrorModel = errorModel;
}
