public static IServiceCollection ConfigureConfigTypes(this IServiceCollection services, IConfiguration configuration)
{
if (services == null)
{
throw new ArgumentNullException(nameof(services));
}
if (configuration == null)
{
throw new ArgumentNullException(nameof(configuration));
}
var assemblies = DefaultAssemblyLocator.Locate();
var configTypes = ConfigSectionAttribute.GetAllAppliedTypes(assemblies);
MethodInfo method = typeof(OptionsConfigurationServiceCollectionExtensions)
.GetMethod("Configure", new Type[] { typeof(IServiceCollection), typeof(IConfiguration) });
foreach (var configTypeInfo in configTypes)
{
var configSectionAttribute = configTypeInfo.GetCustomAttribute <ConfigSectionAttribute>();
var configSection = configuration.GetSection(configSectionAttribute.SectionName);
// https://github.com/aspnet/Options/blob/1.0.0-rc2/src/Microsoft.Extensions.Options.ConfigurationExtensions/OptionsServiceCollectionExtensions.cs#L12-L27
MethodInfo genericMethod = method.MakeGenericMethod(configTypeInfo.AsType());
genericMethod.Invoke(null, new object[] { services, configSection });
}
return(services);
}
public static TConfigType GetConfigType <TConfigType>(this IConfiguration configuration)
{
var assemblies = DefaultAssemblyLocator.Locate();
var configTypes = ConfigSectionAttribute.GetAllAppliedTypes(assemblies);
var configType = configTypes.FirstOrDefault(x => x.AsType() == typeof(TConfigType));
if (configType != null)
{
var configSectionAttribute = configType.GetCustomAttribute <ConfigSectionAttribute>();
var configInstance = Activator.CreateInstance(typeof(TConfigType));
var section = configuration.GetSection(configSectionAttribute.SectionName);
ConfigurationBinder.Bind(section, configInstance);
return((TConfigType)configInstance);
}
else
{
throw new InvalidOperationException($"'{typeof(TConfigType).FullName}' is not recognized as a config type.");
}
}
/// <remarks>
/// For usage of <code>ILibraryManager</code>, see: https://github.com/aspnet/SignalR-Server/blob/dae3e5331081093e038ba0d8bc74ccd8d9046a35/src/Microsoft.AspNetCore.SignalR.Server/Hubs/DefaultAssemblyLocator.cs
/// </remarks>
public static IEnumerable <ValidationResult> ValidateConfigTypes(this IConfiguration configuration)
{
var assemblies = DefaultAssemblyLocator.Locate();
var configTypes = ConfigSectionAttribute.GetAllAppliedTypes(assemblies);
return(configTypes.Select(configTypeInfo =>
{
var configSectionAttribute = configTypeInfo.GetCustomAttribute <ConfigSectionAttribute>();
var configInstance = Activator.CreateInstance(configTypeInfo.AsType());
var section = configuration.GetSection(configSectionAttribute.SectionName);
ConfigurationBinder.Bind(section, configInstance);
if (configInstance != null)
{
return Validate(configInstance);
}
else
{
throw new InvalidOperationException($"No config values for {configTypeInfo.FullName}.");
}
}).SelectMany(validationResults => validationResults));
}