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Register MediatR handlers in Asp.Net 5 / vNext / Core
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namespace Microsoft.AspNet.Builder | |
{ | |
public static class MediatRExtensions | |
{ | |
public static IServiceCollection AddMediatR(this IServiceCollection services, params Assembly[] handlerAssemblies) | |
{ | |
services.AddTransient<IMediator>(x => new Mediator(x.GetService<SingleInstanceFactory>(), x.GetService<MultiInstanceFactory>())); | |
services.AddTransient<SingleInstanceFactory>(x => t => x.GetRequiredService(t)); | |
services.AddTransient<MultiInstanceFactory>(x => t => x.GetServices(t)); | |
foreach (var assembly in handlerAssemblies) | |
{ | |
foreach (var type in assembly.ExportedTypes.Select(t => t.GetTypeInfo()).Where(t => t.IsClass && !t.IsAbstract)) | |
{ | |
var interfaces = type.ImplementedInterfaces.Select(i => i.GetTypeInfo()).ToArray(); | |
foreach (var handlerType in interfaces.Where(i => i.IsGenericType && i.GetGenericTypeDefinition() == typeof(IAsyncRequestHandler<,>))) | |
{ | |
services.AddTransient(handlerType.AsType(), type.AsType()); | |
} | |
foreach (var handlerType in interfaces.Where(i => i.IsGenericType && i.GetGenericTypeDefinition() == typeof(INotificationHandler<>))) | |
{ | |
services.AddTransient(handlerType.AsType(), type.AsType()); | |
} | |
foreach (var handlerType in interfaces.Where(i => i.IsGenericType && i.GetGenericTypeDefinition() == typeof(IRequestHandler<,>))) | |
{ | |
services.AddTransient(handlerType.AsType(), type.AsType()); | |
} | |
} | |
} | |
return services; | |
} | |
} | |
} |
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