/// <summary>
/// Validates an instance of type <typeparamref name="TRequestBody" />,
/// according to it's attributes.
/// </summary>
/// <typeparam name="TRequestBody">
/// A type deriving from <see cref="Models.ModelsBase" />.
/// </typeparam>
/// <param name="loggerProvider">
/// An instance of <see cref="ILoggerProvider" />.
/// </param>
/// <param name="requestBody">
/// An instance of type <typeparamref name="TRequestBody" />.
/// </param>
/// <returns>
/// True if the instance passed validation, otherwise false.
/// </returns>
public static bool ValidateModel <TRequestBody>(
ILoggerProvider loggerProvider,
TRequestBody requestBody)
where TRequestBody : Models.ModelsBase
{
bool toReturn = false;
ValidationContext validationContext = new ValidationContext(
requestBody,
null,
null);
List <ValidationResult> validationResults =
new List <ValidationResult>();
loggerProvider.Debug($"Performing validation of {requestBody}...");
toReturn = Validator.TryValidateObject(
requestBody,
validationContext,
validationResults,
true);
if (toReturn)
{
loggerProvider.Info($"{requestBody} passed validation!");
}
else
{
string[] validationList = validationResults
.Select(ValidationResultToString)
.ToArray();
string validationListConcat =
string.Join(", ", validationList);
string validationFailuresDesc =
$"{validationResults.Count} validation error(s) were " +
$"highlighted. These are: {validationListConcat}";
loggerProvider.Warning(
$"{requestBody} failed validation. " +
$"{validationFailuresDesc}.");
}
return(toReturn);
}
private static TRequestBody ParseRequestBody <TRequestBody>(
HttpRequest httpRequest,
ILoggerProvider loggerProvider)
where TRequestBody : Models.ModelsBase
{
TRequestBody toReturn = null;
Type requestBodyType = typeof(TRequestBody);
loggerProvider.Debug("Reading the request body...");
string requestBody = null;
using (StreamReader streamReader = new StreamReader(httpRequest.Body))
{
requestBody = streamReader.ReadToEnd();
}
loggerProvider.Debug(
$"Request body: \"{requestBody}\". Parsing body into " +
$"{requestBodyType.Name} instance...");
try
{
toReturn = JsonConvert.DeserializeObject <TRequestBody>(
requestBody);
loggerProvider.Info($"Parsed: {toReturn}.");
}
catch (JsonReaderException jsonReaderException)
{
loggerProvider.Warning(
$"A {nameof(JsonReaderException)} was thrown when " +
$"deserialising the request body \"{requestBody}\". The " +
$"exception message: \"{jsonReaderException.Message}\".");
}
return(toReturn);
}
