public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value)
{
if (value is string)
{
Udi udi;
if (UdiParser.TryParse((string)value, out udi))
{
return(udi);
}
}
return(base.ConvertFrom(context, culture, value));
}
/// <summary>
/// Scan for deploy <see cref="IServiceConnector"/> in assemblies for known UDI types.
/// </summary>
/// <param name="typeLoader"></param>
public static void ScanDeployServiceConnectorsForUdiTypes(TypeLoader typeLoader)
{
if (typeLoader is null)
{
throw new ArgumentNullException(nameof(typeLoader));
}
if (_scanned)
{
return;
}
lock (ScanLocker)
{
// Scan for unknown UDI types
// there is no way we can get the "registered" service connectors, as registration
// happens in Deploy, not in Core, and the Udi class belongs to Core - therefore, we
// just pick every service connectors - just making sure that not two of them
// would register the same entity type, with different udi types (would not make
// much sense anyways)
var connectors = typeLoader.GetTypes <IServiceConnector>();
var result = new Dictionary <string, UdiType>();
foreach (var connector in connectors)
{
var attrs = connector.GetCustomAttributes <UdiDefinitionAttribute>(false);
foreach (var attr in attrs)
{
if (result.TryGetValue(attr.EntityType, out var udiType) && udiType != attr.UdiType)
{
throw new Exception(string.Format("Entity type \"{0}\" is declared by more than one IServiceConnector, with different UdiTypes.", attr.EntityType));
}
result[attr.EntityType] = attr.UdiType;
}
}
// merge these into the known list
foreach (var item in result)
{
UdiParser.RegisterUdiType(item.Key, item.Value);
}
_scanned = true;
}
}
/// <summary>
/// Registers a single <see cref="IServiceConnector"/> to add it's UDI type.
/// </summary>
/// <typeparam name="T"></typeparam>
public static void RegisterServiceConnector <T>()
where T : IServiceConnector
{
var result = new Dictionary <string, UdiType>();
var connector = typeof(T);
var attrs = connector.GetCustomAttributes <UdiDefinitionAttribute>(false);
foreach (var attr in attrs)
{
if (result.TryGetValue(attr.EntityType, out var udiType) && udiType != attr.UdiType)
{
throw new Exception(string.Format("Entity type \"{0}\" is declared by more than one IServiceConnector, with different UdiTypes.", attr.EntityType));
}
result[attr.EntityType] = attr.UdiType;
}
// merge these into the known list
foreach (var item in result)
{
UdiParser.RegisterUdiType(item.Key, item.Value);
}
}
/// <summary>
/// Creates a root Udi for an entity type.
/// </summary>
/// <param name="entityType">The entity type.</param>
/// <returns>The root Udi for the entity type.</returns>
public static Udi Create(string entityType)
{
return(UdiParser.GetRootUdi(entityType));
}