/// <summary>
/// Chains instances of <see cref="MiddlewareBase{TContext, TOut}"/> together using
/// the given inner as the inner middleware.
/// </summary>
/// <param name="inner">The innermost instance of <see cref="MiddlewareBase{TContext, TOut}"/>.</param>
/// <param name="middleware">The instances of <see cref="MiddlewareBase{TContext, TOut}"/> to add to the
/// returned composite <see cref="MiddlewareBase{TContext, TOut}"/>.</param>
/// <returns>A composite <see cref="MiddlewareBase{TContext, TOut}"/>.</returns>
public static MiddlewareBase <TIn, TOut> WithAsync <TIn, TOut>(
this MiddlewareBase <TIn, TOut> inner,
params Func <MiddlewareBase <TIn, TOut>, MiddlewareBase <TIn, TOut> >[] middleware)
{
if (inner == null)
{
throw new ArgumentNullException(nameof(inner));
}
if (middleware == null)
{
throw new ArgumentNullException(nameof(middleware));
}
if (middleware.Any(x => x == null))
{
throw new ArgumentException("All provided middlewares should be non-null", nameof(middleware));
}
var policy = inner;
foreach (var m in middleware)
{
policy = m(policy);
}
return(policy);
}
public MiddlewareBase <TContext, TOut> WithNext(MiddlewareBase <TContext, TOut> next)
{
_next = next;
return(this);
}
public MiddlewareBase(MiddlewareBase <TContext, TOut> next = null)
{
_next = next;
}
