/// <summary>
/// Registers all the <see cref="IValidator{T}"/> found in the given assembly.
/// </summary>
/// <param name="options">The mediator options</param>
/// <param name="assembly">The assembly to scan</param>
/// <param name="lifetime">The validators lifetime</param>
/// <returns>The options instance after changes</returns>
/// <exception cref="ArgumentNullException"></exception>
public static MediatorOptions AddValidatorsFromAssembly(this MediatorOptions options,
Assembly assembly, ServiceLifetime lifetime = ServiceLifetime.Singleton)
{
#if NETSTANDARD1_1
var exportedTypes = assembly.ExportedTypes.Select(t => t.GetTypeInfo());
#else
var exportedTypes = assembly.ExportedTypes;
#endif
foreach (var t in exportedTypes.Where(t => t.IsClass && !t.IsAbstract))
{
#if NETSTANDARD1_1
var implementedInterfaces = t.ImplementedInterfaces.Select(i => i.GetTypeInfo());
#else
var implementedInterfaces = t.GetInterfaces();
#endif
foreach (var i in implementedInterfaces.Where(e => e.IsGenericType && e.GetGenericTypeDefinition() == typeof(IValidator <>)))
{
#if NETSTANDARD1_1
var serviceType = i.AsType();
var implementationType = t.AsType();
#else
var serviceType = i;
var implementationType = t;
#endif
options.Services.Add(new ServiceDescriptor(serviceType, implementationType, lifetime));
}
}
return(options);
}
/// <summary>
/// Registers all the <see cref="IValidator{T}"/> found in the assembly of the given type.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="options"></param>
/// <param name="lifetime"></param>
/// <returns></returns>
public static MediatorOptions AddValidatorsFromAssemblyOf <T>(this MediatorOptions options, ServiceLifetime lifetime = ServiceLifetime.Singleton)
{
#if NETSTANDARD1_1
return(options.AddValidatorsFromAssembly(typeof(T).GetTypeInfo().Assembly, lifetime));
#else
return(options.AddValidatorsFromAssembly(typeof(T).Assembly, lifetime));
#endif
}
/// <summary>
/// Registers all the command, query and event handlers found in the given type assembly.
/// </summary>
/// <typeparam name="T">The type to scan the assembly</typeparam>
/// <param name="options">The mediator options</param>
/// <param name="lifetime">The handlers lifetime</param>
/// <returns>The options instance after changes</returns>
/// <exception cref="ArgumentNullException"></exception>
public static MediatorOptions AddHandlersFromAssemblyOf <T>(this MediatorOptions options,
ServiceLifetime lifetime = ServiceLifetime.Transient)
{
#if NETSTANDARD1_1
return(options.AddHandlersFromAssembly(typeof(T).GetTypeInfo().Assembly, lifetime));
#else
return(options.AddHandlersFromAssembly(typeof(T).Assembly, lifetime));
#endif
}
/// <summary>
/// Configures the given factory for mediator <see cref="IPipeline"/> instances.
/// Registration order will be kept when executing the pipeline.
/// </summary>
/// <param name="options">The mediator options</param>
/// <param name="factory">The pipeline factory</param>
/// <param name="lifetime">The pipeline lifetime</param>
/// <returns>The options instance after changes</returns>
/// <exception cref="ArgumentNullException"></exception>
public static MediatorOptions AddPipeline(
this MediatorOptions options, Func <IServiceProvider, IPipeline> factory, ServiceLifetime lifetime = ServiceLifetime.Transient)
{
if (options == null)
{
throw new ArgumentNullException(nameof(options));
}
options.Services.Add(new ServiceDescriptor(typeof(IPipeline), factory, lifetime));
return(options);
}
/// <summary>
/// Configures the given type as a mediator <see cref="IPipeline"/>.
/// Registration order will be kept when executing the pipeline.
/// </summary>
/// <typeparam name="T">The pipeline type</typeparam>
/// <param name="options">The mediator options</param>
/// <param name="lifetime">The pipeline lifetime</param>
/// <returns>The options instance after changes</returns>
/// <exception cref="ArgumentNullException"></exception>
public static MediatorOptions AddPipeline <T>(this MediatorOptions options, ServiceLifetime lifetime = ServiceLifetime.Transient)
where T : class, IPipeline
{
if (options == null)
{
throw new ArgumentNullException(nameof(options));
}
options.Services.Add(new ServiceDescriptor(typeof(IPipeline), typeof(T), lifetime));
return(options);
}
/// <summary>
/// Registers a <see cref="ValidationPipeline"/>.
/// </summary>
/// <param name="options">The mediator registration options</param>
/// <param name="config">Configures the pipeline options</param>
/// <param name="lifetime">The pipeline lifetime</param>
/// <returns></returns>
/// <exception cref="ArgumentNullException"></exception>
public static MediatorOptions AddPipelineForValidation(
this MediatorOptions options, Action <ValidationPipelineOptions> config = null, ServiceLifetime lifetime = ServiceLifetime.Transient)
{
if (config != null)
{
options.Services.Configure(config);
}
options.AddPipeline <ValidationPipeline>(lifetime);
return(options);
}
public static IServiceCollection AddMediator(this IServiceCollection services, Action <MediatorOptions> options)
{
var optionsInstance = new MediatorOptions();
options(optionsInstance);
RegisterAssembly(services, optionsInstance);
var handlerTypes = services
.SelectMany(d => {
var interfaces = d.ServiceType.GetInterfaces().Select(iface => (type: d.ServiceType, iface));
return(d.ServiceType.IsInterface
? interfaces.Concat(new[] { (type: d.ServiceType, iface: d.ServiceType) })
/// <summary>
/// Registers a <see cref="EFCoreTransactionPipeline{TDbContext}"/>.
/// </summary>
/// <param name="options">The mediator registration options</param>
/// <param name="config">Configures the pipeline options</param>
/// <param name="lifetime">The pipeline lifetime</param>
/// <returns></returns>
/// <exception cref="ArgumentNullException"></exception>
public static MediatorOptions AddPipelineForEFCoreTransaction <TDbContext>(
this MediatorOptions options, Action <EFCoreTransactionPipelineOptions> config = null, ServiceLifetime lifetime = ServiceLifetime.Transient)
where TDbContext : DbContext
{
if (config != null)
{
options.Services.Configure(config);
}
options.AddPipeline <EFCoreTransactionPipeline <TDbContext> >(lifetime);
return(options);
}
/// <summary>
/// Configures the given instance as a mediator <see cref="IPipeline"/>.
/// Registration order will be kept when executing the pipeline.
/// </summary>
/// <typeparam name="T">The pipeline type</typeparam>
/// <param name="options">The mediator options</param>
/// <param name="instance">The singleton instance</param>
/// <returns>The options instance after changes</returns>
/// <exception cref="ArgumentNullException"></exception>
public static MediatorOptions AddPipeline <T>(this MediatorOptions options, T instance)
where T : class, IPipeline
{
if (options == null)
{
throw new ArgumentNullException(nameof(options));
}
if (instance == null)
{
throw new ArgumentNullException(nameof(instance));
}
options.Services.Add(new ServiceDescriptor(typeof(IPipeline), instance));
return(options);
}
/// <summary>
/// Registers all the command, query and event handlers found in the given assembly.
/// </summary>
/// <param name="options">The mediator options</param>
/// <param name="assembly">The assembly to scan</param>
/// <param name="lifetime">The handlers lifetime</param>
/// <returns>The options instance after changes</returns>
/// <exception cref="ArgumentNullException"></exception>
public static MediatorOptions AddHandlersFromAssembly(this MediatorOptions options,
Assembly assembly, ServiceLifetime lifetime = ServiceLifetime.Transient)
{
if (options == null)
{
throw new ArgumentNullException(nameof(options));
}
if (assembly == null)
{
throw new ArgumentNullException(nameof(assembly));
}
#if NETSTANDARD1_1
var exportedTypes = assembly.ExportedTypes.Select(t => t.GetTypeInfo());
#else
var exportedTypes = assembly.ExportedTypes;
#endif
foreach (var t in exportedTypes.Where(t => t.IsClass && !t.IsAbstract))
{
#if NETSTANDARD1_1
var implementedInterfaces = t.ImplementedInterfaces.Select(i => i.GetTypeInfo());
#else
var implementedInterfaces = t.GetInterfaces();
#endif
foreach (var i in implementedInterfaces.Where(e => e.IsGenericType))
{
var iGenericType = i.GetGenericTypeDefinition();
if (iGenericType == typeof(ICommandHandler <>) ||
iGenericType == typeof(ICommandHandler <,>) ||
iGenericType == typeof(IEventHandler <>) ||
iGenericType == typeof(IQueryHandler <,>))
{
#if NETSTANDARD1_1
var serviceType = i.AsType();
var implementationType = t.AsType();
#else
var serviceType = i;
var implementationType = t;
#endif
options.Services.Add(new ServiceDescriptor(serviceType, implementationType, lifetime));
}
}
}
return(options);
}
/// <summary>
/// Configures the mediator into the <see cref="IServiceCollection"/>.
/// </summary>
/// <param name="services">The service collection</param>
/// <param name="config">An optional configurations action</param>
/// <returns>The service collection after changes</returns>
/// <exception cref="ArgumentNullException"></exception>
public static IServiceCollection AddMediator(this IServiceCollection services, Action <MediatorOptions> config = null)
{
var options = new MediatorOptions(services);
config?.Invoke(options);
services.TryAdd(new ServiceDescriptor(
typeof(IMediatorServiceProvider), typeof(MicrosoftMediatorServiceProvider), options.ServiceProviderLifetime));
services.TryAdd(new ServiceDescriptor(
typeof(IMediator), typeof(Mediator), options.Lifetime));
services.TryAdd(new ServiceDescriptor(
typeof(IFetcher <,>), typeof(MicrosoftFetcher <,>), ServiceLifetime.Transient));
services.TryAdd(new ServiceDescriptor(
typeof(ISender <>), typeof(MicrosoftSender <>), ServiceLifetime.Transient));
services.TryAdd(new ServiceDescriptor(
typeof(ISender <,>), typeof(MicrosoftSender <,>), ServiceLifetime.Transient));
services.TryAdd(new ServiceDescriptor(
typeof(IBroadcaster <>), typeof(MicrosoftBroadcaster <>), ServiceLifetime.Transient));
return(services);
}
public static IServiceCollection AddMediator(this IServiceCollection services, Action <MediatorOptions> config)
{
var options = new MediatorOptions(services);
config(options);
if (services.Contains(typeof(IMediator)))
{
return(services);
}
var mediatorLifetime = options.Lifetime;
services
.AddScoped <ServiceFactory>(provider => provider.GetService)
.AddSingleton(new PipelineCollection())
.Add(new ServiceDescriptor(typeof(IMediator), typeof(Mediator), mediatorLifetime));
services.Add(new ServiceDescriptor(typeof(ISender), ResolveMediator, mediatorLifetime));
services.Add(new ServiceDescriptor(typeof(IPublisher), ResolveMediator, mediatorLifetime));
return(services);
}
