private static void AddByConvention(this IServiceCollection serviceCollection, Action <ByConventionConfiguration> options)
{
if (serviceCollection == null)
{
throw new ArgumentNullException(nameof(serviceCollection));
}
if (options == null)
{
throw new ArgumentNullException(nameof(options));
}
var config = new ByConventionConfiguration();
options.Invoke(config);
foreach (Assembly assembly in config.Assemblies.Distinct())
{
serviceCollection.AddByConvention(assembly, config);
}
}
private static void AddByConvention(this IServiceCollection serviceCollection, Assembly assembly, ByConventionConfiguration configuration)
{
if (serviceCollection == null)
{
throw new ArgumentNullException(nameof(serviceCollection));
}
if (assembly == null)
{
throw new ArgumentNullException(nameof(assembly));
}
Type[] interfaces = assembly.ExportedTypes
.Where(x => x.IsInterface && x.IsPublic && !configuration.IgnoredTypes.Contains(x))
.ToArray();
Type[] classes = assembly.GetTypes()
.Where(x => !x.IsInterface && !x.IsAbstract)
.ToArray();
foreach (Type @interface in interfaces)
{
Type[] implementations = classes
.Where(@class =>
@interface.IsAssignableFrom(@class) &&
@interface.Assembly.Equals(@class.Assembly) &&
@interface.IsInExactNamespace(@class) &&
@interface.Name.Equals($"I{@class.Name}"))
.ToArray();
if (implementations.Length == 0)
{
continue;
}
if (implementations.Length > 1)
{
continue;
}
serviceCollection.TryAdd(new ServiceDescriptor(@interface, implementations.First(), configuration.Lifetime));
}
}
