/// <summary>
/// Recursively validates <paramref name="instance"/>.
/// </summary>
/// <param name="instance">The object to validate.</param>
/// <param name="results">A collection to hold each failed validation.</param>
/// <param name="validateAllProperties">true to validate all properties; if false, only required attributes are validated.</param>
/// <param name="prefix">The prefix to append to the field name when validation fails.</param>
/// <returns>true if the object validates; otherwise, false.</returns>
/// <exception cref="ArgumentNullException"><paramref name="instance"/> is null.</exception>
private static bool TryValidateObject(object instance, ICollection <ValidationResult> results, bool validateAllProperties, string prefix)
{
GuardClauses.IsNotNull(nameof(instance), instance);
var tempResults = new List <ValidationResult>();
ValidationContext validationContext = new ValidationContext(instance);
var isValid = Validator.TryValidateObject(instance, validationContext, tempResults, validateAllProperties: validateAllProperties);
foreach (var item in tempResults)
{
IEnumerable <string> memberNames = item.MemberNames.Select(name => (!string.IsNullOrEmpty(prefix) ? prefix + "." : string.Empty) + name);
results.Add(new ValidationResult(item.ErrorMessage, memberNames));
}
foreach (var prop in instance.GetType().GetProperties())
{
if (prop.PropertyType != typeof(string))
{
var value = prop.GetValue(instance);
if (value == null)
{
continue;
}
else if (value is IEnumerable <object> list)
{
var memberPrefix = (!string.IsNullOrEmpty(prefix) ? prefix + "." : string.Empty) + prop.Name;
int i = 0;
foreach (var item in list)
{
if (!TryValidateObject(item, results, validateAllProperties, $"{memberPrefix}[{i}]"))
{
isValid = false;
}
i++;
}
}
else
{
var memberPrefix = (!string.IsNullOrEmpty(prefix) ? prefix + "." : string.Empty) + prop.Name;
if (!TryValidateObject(value, results, validateAllProperties, memberPrefix))
{
isValid = false;
}
}
}
}
return(isValid);
}
/// <summary>
/// Initializes a new instance of the <see cref="ConditionalMiddleware"/> class.
/// </summary>
/// <param name="pipeline">The pipeline. Required.</param>
/// <param name="condition">The condition to evaluate. Required.</param>
/// <param name="configure">Configures the branch. Optional.</param>
/// <param name="rejoinPipeline">Determines if the branch should rejoin the main pipeline or not.</param>
public ConditionalMiddleware(
IMiddlewarePipeline pipeline,
Func <HttpContext, bool> condition,
Action <IMiddlewarePipeline> configure,
bool rejoinPipeline)
{
GuardClauses.IsNotNull(nameof(pipeline), pipeline);
GuardClauses.IsNotNull(nameof(condition), condition);
this.pipeline = pipeline;
this.configure = configure;
this.condition = condition;
this.rejoinPipeline = rejoinPipeline;
}
/// <summary>
/// Initializes a new instance of the <see cref="MiddlewarePipeline"/> class.
/// </summary>
/// <param name="httpContextAccessor">The HTTP context accessor.</param>
public MiddlewarePipeline(IHttpContextAccessor httpContextAccessor)
{
GuardClauses.IsNotNull(nameof(httpContextAccessor), httpContextAccessor);
this.httpContextAccessor = httpContextAccessor;
}
/// <summary>
/// Initializes a new instance of the <see cref="FunctionMiddleware"/> class.
/// </summary>
/// <param name="func">The task to be executed.</param>
public FunctionMiddleware(Func <HttpContext, Task <IActionResult> > func)
{
GuardClauses.IsNotNull(nameof(func), func);
this.func = func;
}