private void UpdateCollection()
{
var context = new ServiceRegisterDescriptorProviderContext();
for (var i = 0; i < _serviceRegisterDescriptorProviders.Length; i++)
{
_serviceRegisterDescriptorProviders[i].OnProvidersExecuting(context);
}
for (var i = _serviceRegisterDescriptorProviders.Length - 1; i >= 0; i--)
{
_serviceRegisterDescriptorProviders[i].OnProvidersExecuted(context);
}
_collection = new ServiceRegisterDescriptorCollection(
new ReadOnlyCollection <ServiceRegisterDescriptor>(context.Results));
}
/// <summary>
/// 使用反射从程序集中获取所有包含ServiceRegisterDescriptor特性的接口定义
/// </summary>
/// <param name="context"></param>
public void OnProvidersExecuting(ServiceRegisterDescriptorProviderContext context)
{
Assembly[] assemblys = AssemblyDiscovery.Discovery();
IEnumerable <Type> types = assemblys.SelectMany(m => m.GetTypes().Where(t => t.GetTypeInfo().GetCustomAttributes().Any(a => a.GetType() == typeof(ServiceRegisterDescriptorAttribute)))).ToList();
foreach (var type in types)
{
TypeInfo typeInfo = type.GetTypeInfo();
ServiceRegisterDescriptorAttribute attr = type.GetTypeInfo().GetCustomAttributes().FirstOrDefault(m => m.GetType() == typeof(ServiceRegisterDescriptorAttribute)) as ServiceRegisterDescriptorAttribute;
if (typeInfo.IsGenericTypeDefinition && attr.GenericType == null)
{
throw new NotSupportedException(nameof(attr));
}
Type[] impTypes = null;
if ((typeInfo.IsInterface || typeInfo.IsAbstract) && attr.Imp == null)
{
//从程序集中获取所有实现了该服务端类
if (typeInfo.IsGenericTypeDefinition && typeInfo.IsInterface)
{
impTypes = assemblys.SelectMany(m => m.GetTypes().Where(t => t.GetTypeInfo().IsClass&& !t.GetTypeInfo().IsAbstract&& t.GetTypeInfo().GetInterfaces().Any(i => i.GetTypeInfo().IsGenericType&& i.GetGenericTypeDefinition() == type))).ToArray();
}
else
{
if (typeInfo.IsInterface)
{
impTypes = assemblys.SelectMany(m => m.GetTypes().Where(t => t.GetTypeInfo().IsClass&& !t.GetTypeInfo().IsAbstract&& t.GetTypeInfo().GetInterfaces().Any(i => i == type))).ToArray();
}
else
{
impTypes = assemblys.SelectMany(m => m.GetTypes().Where(t => t.GetTypeInfo().IsClass&& !t.GetTypeInfo().IsAbstract&& t.GetTypeInfo().IsSubclassOf(type))).ToArray();
}
}
}
else if (attr.Imp != null)
{
impTypes = new Type[1] {
attr.Imp
};
}
else
{
impTypes = new Type[1] {
type
};
}
foreach (var imp in impTypes)
{
ServiceRegisterDescriptor d = new ServiceRegisterDescriptor
{
AllowMultipleImp = attr.AllowMultipleImp,
Imp = imp,
ServiceType = type,
LifeTime = attr.LifeTime
};
if (typeInfo.IsGenericType)
{
d.GenericParameterTypes = assemblys.SelectMany(m => m.GetTypes().Where(t => !t.GetTypeInfo().IsAbstract&& (t.GetTypeInfo().IsSubclassOf(attr.GenericType) || t == attr.GenericType))).ToArray();
}
context.Results.Add(d);
}
}
}
public void OnProvidersExecuted(ServiceRegisterDescriptorProviderContext context)
{
}