/// <summary>
/// Inject MediatR into IServiceCollection
/// </summary>
/// <param name="services">The instance of <see cref="IServiceCollection"/></param>
/// <returns></returns>
public static IServiceCollection AddIngosMediatR(this IServiceCollection services,
Action <IngosMediatRDescriptionOptions> setupAction)
{
if (setupAction == null)
{
throw new ArgumentNullException(nameof(setupAction));
}
// Get mediatr config options
//
var options = new IngosMediatRDescriptionOptions();
setupAction?.Invoke(options);
return(AddMediatRService(services, options));
}
/// <summary>
/// Add MediatR
/// </summary>
/// <param name="services">The collection of services</param>
/// <param name="options">The mediatr config options</param>
/// <returns></returns>
public static IServiceCollection AddMediatRService(IServiceCollection services, IngosMediatRDescriptionOptions options)
{
// Get Startup's type
var mediators = new List <Type> {
options.StartupClassType
};
// The base request interface's type
var parentRequestType = typeof(IRequest <>);
// The base notification interface's type
var parentNotificationType = typeof(INotification);
foreach (var item in options.Assemblies)
{
var instances = Assembly.Load(item).GetTypes();
foreach (var instance in instances)
{
// Get the interfaces info
//
var baseInterfaces = instance.GetInterfaces();
if (baseInterfaces.Count() == 0 || !baseInterfaces.Any())
{
continue;
}
// Get all class which inheritance the IRequest<T> interface
//
var requestTypes = baseInterfaces.Where(i => i.IsGenericType &&
i.GetGenericTypeDefinition() == parentRequestType);
if (requestTypes.Count() != 0 || requestTypes.Any())
{
mediators.Add(instance);
}
// Get all class which inheritance the INotification interface
//
var notificationTypes = baseInterfaces.Where(i => i.FullName == parentNotificationType.FullName);
if (notificationTypes.Count() != 0 || notificationTypes.Any())
{
mediators.Add(instance);
}
}
}
// Add mediators
services.AddMediatR(mediators.ToArray());
return(services);
}
