/// <summary>
/// Releases item from pool's locked item list
/// </summary>
public void ReleasePoolItem <TService>(TService service)
{
BuiltServiceDescriptor descriptor = _services[typeof(TService)];
IServicePool pool = (IServicePool)descriptor.Instance;
pool.ReleaseInstance(service);
}
internal object GetWithDescriptor(BuiltServiceDescriptor descriptor, IContainerScope scope)
{
if (descriptor.IsPool)
{
return(GetFromPool(descriptor, scope));
}
if (descriptor.Implementation == ImplementationType.Scoped && scope == null)
{
throw new ScopeException($"{descriptor.ServiceType.ToTypeString()} is registered as scoped service but trying to create instance when scope is null");
}
object service;
if (scope != null && descriptor.Implementation == ImplementationType.Scoped)
{
service = scope.Get(descriptor.ServiceType);
}
else
{
service = descriptor.CreateInstance(this, scope);
}
return(ApplyAfterGet(descriptor, service));
}
internal object Get(Type serviceType, bool executedFromScope, IContainerScope scope = null)
{
//throw new NullReferenceException($"Could not get service from container: {typeof(TService).ToTypeString()}");
//throw new KeyNotFoundException($"Service type is not found: {serviceType.ToTypeString()}");
BuiltServiceDescriptor descriptor = _services[serviceType];
if (descriptor.IsPool)
{
return(GetFromPool(descriptor, scope));
}
if (descriptor.Implementation == ImplementationType.Scoped && scope == null)
{
throw new ScopeException($"{serviceType.ToTypeString()} is registered as scoped service but trying to create instance when scope is null");
}
if (descriptor.Instance != null)
{
return(ApplyAfterGet(descriptor, descriptor.Instance));
}
object service;
if (!executedFromScope && scope != null && descriptor.Implementation == ImplementationType.Scoped)
{
service = scope.Get(serviceType);
}
else
{
service = descriptor.CreateInstance(this, scope);
}
return(ApplyAfterGet(descriptor, service));
}
private void FillParameterDescriptors(BuiltServiceDescriptor descriptor, BuiltServiceDescriptor root)
{
if (descriptor.Parameters == null)
{
return;
}
if (root.Parameters != null && descriptor.Parameters != null)
{
if (descriptor.Parameters.Contains(root.ServiceType))
{
throw new CircularReferenceException($"Circular reference between {root.ServiceType.ToTypeString()} and {descriptor.ServiceType.ToTypeString()}");
}
}
foreach (Type type in descriptor.Parameters)
{
if (!_services.ContainsKey(type))
{
throw new MissingReferenceException($"{descriptor.ServiceType.ToTypeString()} requires {type.ToTypeString()} but it's not registered");
}
BuiltServiceDescriptor parameterDescriptor = _services[type];
descriptor.ParameterDescriptors.Add(parameterDescriptor);
FillParameterDescriptors(parameterDescriptor, root);
}
}
public object CreateInstance(TwinoServiceProvider provider, IContainerScope scope = null)
{
if (!IsPool && Instance != null)
{
return(Instance);
}
object service;
if (ImplementationFactory != null)
{
service = ImplementationFactory(provider);
ExecuteAfterCreated(service);
return(service);
}
if (Parameters == null || Parameters.Length == 0)
{
service = _instanceCreatorFunctionParameterless();
ExecuteAfterCreated(service);
return(service);
}
if (Parameters.Length == 1)
{
BuiltServiceDescriptor descriptor = ParameterDescriptors[0];
object parameter = provider.GetWithDescriptor(descriptor, scope);
service = _instanceCreatorFunctionOneParameter(parameter);
ExecuteAfterCreated(service);
return(service);
}
object[] p = new object[ParameterDescriptors.Count];
for (int i = 0; i < p.Length; i++)
{
BuiltServiceDescriptor descriptor = ParameterDescriptors[i];
p[i] = provider.GetWithDescriptor(descriptor, scope);
}
service = _instanceCreatorFunctionMultipleParameters(p);
ExecuteAfterCreated(service);
return(service);
}
private object ApplyAfterGet(BuiltServiceDescriptor descriptor, object service)
{
if (descriptor.ProxyInstance != null)
{
service = descriptor.ProxyInstance.Proxy(service);
}
else if (descriptor.ProxyType != null)
{
IServiceProxy proxy = (IServiceProxy)Get(descriptor.ProxyType);
service = proxy.Proxy(service);
}
if (descriptor.Implementation == ImplementationType.Singleton)
{
descriptor.Instance = service;
}
return(service);
}
private object GetFromPool(BuiltServiceDescriptor descriptor, IContainerScope scope)
{
IServicePool pool = (IServicePool)descriptor.Instance;
PoolServiceDescriptor pdesc = pool.GetAndLock(scope);
if (pdesc == null)
{
throw new NullReferenceException($"{descriptor.ServiceType.ToTypeString()} Service is not registered in the container");
}
if (pool.Type == ImplementationType.Scoped && scope == null)
{
throw new ScopeException($"{descriptor.ServiceType.ToTypeString()} is registered as Scoped but scope parameter is null for IServiceContainer.Get method");
}
if (scope != null)
{
scope.UsePoolItem(pool, pdesc);
}
return(pdesc.GetInstance());
}
private BuiltServiceDescriptor BuildItem(TwinoServiceDescriptor descriptor, IEnumerable <TwinoServiceDescriptor> services)
{
ConstructorHelper ctorHelper = new ConstructorHelper(services);
BuiltServiceDescriptor builtDescriptor = new BuiltServiceDescriptor(descriptor.Implementation,
descriptor.ServiceType,
descriptor.ImplementationType);
builtDescriptor.Instance = descriptor.Instance;
builtDescriptor.ImplementationFactory = descriptor.ImplementationFactory;
builtDescriptor.IsPool = descriptor.IsPool;
builtDescriptor.AfterCreatedMethod = descriptor.AfterCreatedMethod;
//we need to find a ctor to create instance
if (builtDescriptor.IsPool || builtDescriptor.Instance == null && builtDescriptor.ImplementationFactory == null)
{
ConstructorInfo constructorInfo = ctorHelper.FindAvailableConstructor(descriptor.ImplementationType);
if (constructorInfo == null)
{
throw new IocConstructorException($"{descriptor.ServiceType.ToTypeString()} does not have available constructor");
}
builtDescriptor.Build(constructorInfo);
}
_services.Add(descriptor.ServiceType, builtDescriptor);
if (builtDescriptor.IsPool)
{
if (builtDescriptor.Instance is IServicePoolInternal pool)
{
pool.SetBuiltDescriptor(builtDescriptor);
}
}
return(builtDescriptor);
}
