/// <summary>
/// Method that is called each time a delegate needs to be created
/// </summary>
/// <param name="scope"></param>
/// <param name="disposalScope"></param>
/// <param name="context"></param>
/// <returns></returns>
public TDelegate CreateDelegate(IExportLocatorScope scope, IDisposalScope disposalScope,
IInjectionContext context)
{
var funcClass = new FuncClass(scope, disposalScope, context, _action, _injectionContextCreator, _arg1Id, _arg2Id, _arg3Id, _arg4Id, _arg5Id);
return((TDelegate)((object)_funcMethodInfo.CreateDelegate(typeof(TDelegate), funcClass)));
}
private object InternalLocate(IExportLocatorScope scope, IDisposalScope disposalScope, Type type, ActivationStrategyFilter consider, object key, IInjectionContext injectionContext, bool allowNull, bool isDynamic)
{
if (type == typeof(ILocatorService) || type == typeof(IExportLocatorScope))
{
return(scope);
}
if (isDynamic)
{
if (type.IsArray)
{
return(DynamicArray(scope, disposalScope, type, consider, injectionContext));
}
if (type.IsConstructedGenericType && type.GetGenericTypeDefinition() == typeof(IEnumerable <>))
{
return(DynamicIEnumerable(scope, disposalScope, type, consider, injectionContext));
}
}
var compiledDelegate = InternalFieldStorage.ActivationStrategyCompiler.FindDelegate(this, type, consider, key, injectionContext, InternalFieldStorage.MissingExportStrategyProviders != ImmutableLinkedList <IMissingExportStrategyProvider> .Empty);
if (compiledDelegate != null)
{
if (key == null && consider == null)
{
compiledDelegate = AddObjectFactory(type, compiledDelegate);
}
return(compiledDelegate(scope, disposalScope ?? (DisposalScope ?? DisposalScopeProvider.ProvideDisposalScope(scope)), injectionContext));
}
if (Parent != null)
{
var injectionScopeParent = (IInjectionScope)Parent;
return(injectionScopeParent.LocateFromChildScope(scope, disposalScope, type, injectionContext, consider, key, allowNull, isDynamic));
}
if (type == typeof(IInjectionScope) &&
ScopeConfiguration.Behaviors.AllowInjectionScopeLocation)
{
return(scope);
}
var value = ScopeConfiguration.Implementation.Locate <IInjectionContextValueProvider>()
.GetValueFromInjectionContext(scope, type, null, injectionContext, !allowNull);
if (value != null)
{
return(value);
}
if (!allowNull)
{
throw new LocateException(new StaticInjectionContext(type));
}
return(null);
}
/// <summary>
/// Default constructor
/// </summary>
/// <param name="scope"></param>
/// <param name="disposalScope"></param>
/// <param name="context"></param>
/// <param name="action"></param>
/// <param name="injectionContextCreator"></param>
public FuncClass(IExportLocatorScope scope, IDisposalScope disposalScope, IInjectionContext context, ActivationStrategyDelegate action, IInjectionContextCreator injectionContextCreator)
{
_scope = scope;
_disposalScope = disposalScope;
_context = context;
_action = action;
_injectionContextCreator = injectionContextCreator;
}
private void AddToScope(IDisposalScope scope, ManualResetEvent syncEvent)
{
syncEvent.WaitOne();
for (int i = 0; i < 10000; i++)
{
scope.AddDisposable(new DisposableItem());
}
}
private void AddToScopeWithCleanup(IDisposalScope scope, ManualResetEvent syncEvent, Action <DisposableItem> action)
{
syncEvent.WaitOne();
for (int i = 0; i < 10000; i++)
{
scope.AddDisposable(new DisposableItem(), action);
}
}
/// <summary>
/// Create GraceOptional instance.
/// </summary>
/// <param name="scope"></param>
/// <param name="disposalScope"></param>
/// <param name="injectionContext"></param>
/// <returns></returns>
public GraceOptional <TResult> CreateOptional(
IExportLocatorScope scope,
IDisposalScope disposalScope,
IInjectionContext injectionContext)
{
return(new GraceOptional <TResult>(scope, qualifier, () =>
{
return (TResult)_delegate(scope, disposalScope, injectionContext);
}));
}
private object DynamicArray(IExportLocatorScope scope, IDisposalScope disposalScope, Type type, ActivationStrategyFilter consider, IInjectionContext injectionContext)
{
if (InternalFieldStorage.DynamicArrayLocator == null)
{
Interlocked.CompareExchange(ref InternalFieldStorage.DynamicArrayLocator,
ScopeConfiguration.Implementation.Locate <IDynamicArrayLocator>(), null);
}
return(InternalFieldStorage.DynamicArrayLocator.Locate(this, scope, disposalScope, type, consider, injectionContext));
}
/// <summary>
/// Dispose the container
/// </summary>
public void Dispose()
{
if (disposalScope != null)
{
instance.Dispose();
disposalScope.Dispose();
disposalScope = null;
}
}
/// <summary>
/// Add instance to disposal scope and return it
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="disposalScope"></param>
/// <param name="value"></param>
/// <returns></returns>
public static T AddToDisposalScope <T>(IDisposalScope disposalScope, T value)
{
var disposable = value as IDisposable;
if (disposable != null)
{
disposalScope.AddDisposable(disposable);
}
return(value);
}
/// <summary>
/// Method that creates one arg Func
/// </summary>
/// <param name="scope"></param>
/// <param name="disposalScope"></param>
/// <param name="context"></param>
/// <returns></returns>
public Func <TArg1, TResult> CreateFunc(IExportLocatorScope scope, IDisposalScope disposalScope, IInjectionContext context)
{
return(arg1 =>
{
var newContext = context?.Clone() ?? _injectionContextCreator.CreateContext(null);
newContext.SetExtraData(_arg1Id, arg1);
return (TResult)_action(scope, disposalScope, newContext);
});
}
/// <summary>
/// Default constructor
/// </summary>
/// <param name="scope"></param>
/// <param name="disposalScope"></param>
/// <param name="context"></param>
/// <param name="action"></param>
/// <param name="injectionContextCreator"></param>
/// <param name="arg1Id"></param>
/// <param name="arg2Id"></param>
/// <param name="arg3Id"></param>
/// <param name="arg4Id"></param>
public FuncClass(IExportLocatorScope scope, IDisposalScope disposalScope, IInjectionContext context, ActivationStrategyDelegate action, IInjectionContextCreator injectionContextCreator, string arg1Id, string arg2Id, string arg3Id, string arg4Id)
{
_scope = scope;
_disposalScope = disposalScope;
_context = context;
_action = action;
_injectionContextCreator = injectionContextCreator;
_arg1Id = arg1Id;
_arg2Id = arg2Id;
_arg3Id = arg3Id;
_arg4Id = arg4Id;
}
/// <summary>
/// static method to create enumerable dynamic
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="injectionScope"></param>
/// <param name="scope"></param>
/// <param name="disposalScope"></param>
/// <param name="consider"></param>
/// <param name="injectionContext"></param>
/// <returns></returns>
public static object EnumerableCreateMethod <T>(IInjectionScope injectionScope, IExportLocatorScope scope,
IDisposalScope disposalScope, ActivationStrategyFilter consider, IInjectionContext injectionContext)
{
var all = injectionScope.InternalLocateAll <T>(scope, disposalScope, typeof(T), injectionContext, consider, null);
if (injectionScope.ScopeConfiguration.Behaviors.CustomEnumerableCreator != null)
{
return(injectionScope.ScopeConfiguration.Behaviors.CustomEnumerableCreator.CreateEnumerable(scope, all.ToArray()));
}
return(all);
}
/// <summary>
/// Create lazy instance
/// </summary>
/// <param name="scope"></param>
/// <param name="disposalScope"></param>
/// <param name="injectionContext"></param>
/// <returns></returns>
public Lazy <TResult, TMetadata> CreateLazy(IExportLocatorScope scope, IDisposalScope disposalScope,
IInjectionContext injectionContext)
{
return(new Lazy <TResult, TMetadata>(() =>
{
if (_delegate == null)
{
_delegate = CompileDelegate();
}
return (TResult)_delegate(scope, disposalScope, injectionContext);
}, _metadata));
}
/// <summary>
/// Get value for object graph
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="scope"></param>
/// <param name="disposalScope"></param>
/// <param name="context"></param>
/// <param name="activationDelegate"></param>
/// <param name="uniqueId"></param>
/// <returns></returns>
public static T GetValue <T>(IExportLocatorScope scope, IDisposalScope disposalScope, IInjectionContext context, ActivationStrategyDelegate activationDelegate, string uniqueId)
{
var value = context.SharedData.GetExtraData(uniqueId);
if (value != null)
{
return((T)value);
}
value = activationDelegate(scope, disposalScope, context);
context.SharedData.SetExtraData(uniqueId, value);
return((T)value);
}
/// <summary>
/// Add to disposal scope or use default
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="disposalScope"></param>
/// <param name="tValue"></param>
/// <param name="defaultValue"></param>
/// <returns></returns>
public static T AddToDisposableScopeOrDefault <T>(IDisposalScope disposalScope, T tValue, T defaultValue)
{
if (tValue != null)
{
var disposable = tValue as IDisposable;
if (disposable != null)
{
disposalScope.AddDisposable(disposable);
}
return(tValue);
}
return(defaultValue);
}
/// <summary>
/// Check for null and then add to disposal scope
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="disposalScope"></param>
/// <param name="context"></param>
/// <param name="value"></param>
/// <returns></returns>
public static T CheckForNullAndAddToDisposalScope <T>(IDisposalScope disposalScope,
StaticInjectionContext context, T value)
{
if (value == null)
{
throw new NullValueProvidedException(context);
}
var disposable = value as IDisposable;
if (disposable != null)
{
disposalScope.AddDisposable(disposable);
}
return(value);
}
private object GetInstance(IExportLocatorScope scope, IDisposalScope disposalScope, IInjectionContext context,
ActivationStrategyDelegate activationDelegate)
{
var key = _keyFunc(scope, context);
var value = _singletons.GetValueOrDefault(key);
if (value != null)
{
return(value);
}
value = activationDelegate(scope, disposalScope, context);
value = ImmutableHashTree.ThreadSafeAdd(ref _singletons, key, value);
return(value);
}
private object SingletonActivation(IExportLocatorScope scope, IDisposalScope disposalScope,
IInjectionContext context)
{
if (_singleton != null)
{
return(_singleton);
}
lock (_lockObject)
{
if (_singleton == null)
{
_singleton = _activationDelegate(scope, disposalScope, context);
}
}
return(_singleton);
}
/// <summary>
/// Get disposal scope from http context
/// </summary>
/// <param name="locatorScope"></param>
/// <returns></returns>
public static IDisposalScope GetDisposalScopeFromHttpContext(IDisposalScope locatorScope)
{
if (HttpContext.Current == null ||
!(locatorScope is DependencyInjectionContainer))
{
return(locatorScope);
}
var disposalScope = HttpContext.Current.Items[_disposalScopeKey] as IDisposalScope;
if (disposalScope != null)
{
return(disposalScope);
}
disposalScope = new DisposalScope();
HttpContext.Current.Items[_disposalScopeKey] = disposalScope;
return(disposalScope);
}
/// <summary>
/// Get a value using lock to guarantee only one is created
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="scope"></param>
/// <param name="disposalScope"></param>
/// <param name="context"></param>
/// <param name="activationDelegate"></param>
/// <param name="uniqueId"></param>
/// <returns></returns>
public static T GetValueGuaranteeOnce <T>(IExportLocatorScope scope, IDisposalScope disposalScope, IInjectionContext context, ActivationStrategyDelegate activationDelegate, string uniqueId)
{
var value = context.SharedData.GetExtraData(uniqueId);
if (value == null)
{
lock (context.SharedData.GetLockObject("SingletonPerAncestor|" + uniqueId))
{
value = context.SharedData.GetExtraData(uniqueId);
if (value == null)
{
value = activationDelegate(scope, disposalScope, context);
context.SharedData.SetExtraData(uniqueId, value);
}
}
}
return((T)value);
}
/// <summary>
/// Configuration object constructor
/// </summary>
/// <param name="configuration"></param>
/// <param name="parent"></param>
/// <param name="name"></param>
public InjectionScope(IInjectionScopeConfiguration configuration, IInjectionScope parent, string name) :
base(parent, name, new ImmutableHashTree <Type, ActivationStrategyDelegate> [configuration.CacheArraySize])
{
configuration.SetInjectionScope(this);
InternalFieldStorage.ScopeConfiguration = configuration;
InternalFieldStorage.InjectionContextCreator = configuration.Implementation.Locate <IInjectionContextCreator>();
InternalFieldStorage.CanLocateTypeService = configuration.Implementation.Locate <ICanLocateTypeService>();
InternalFieldStorage.ActivationStrategyCompiler = configuration.Implementation.Locate <IActivationStrategyCompiler>();
InternalFieldStorage.StrategyCollectionContainer =
AddDisposable(configuration.Implementation.Locate <IActivationStrategyCollectionContainer <ICompiledExportStrategy> >());
InternalFieldStorage.DecoratorCollectionContainer =
AddDisposable(configuration.Implementation.Locate <IActivationStrategyCollectionContainer <ICompiledDecoratorStrategy> >());
for (var i = 0; i <= ArrayLengthMinusOne; i++)
{
ActivationDelegates[i] = ImmutableHashTree <Type, ActivationStrategyDelegate> .Empty;
}
if (configuration.AutoRegisterUnknown && Parent == null)
{
InternalFieldStorage.MissingExportStrategyProviders =
InternalFieldStorage.MissingExportStrategyProviders.Add(
configuration.Implementation.Locate <IMissingExportStrategyProvider>());
}
if (configuration.SupportFuncType)
{
StrategyCollectionContainer.AddStrategy(new FuncTypeStrategy(this));
}
DisposalScopeProvider = configuration.DisposalScopeProvider;
DisposalScope = DisposalScopeProvider == null ? this : null;
}
/// <summary>
/// Internal locate all method
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="scope"></param>
/// <param name="disposalScope"></param>
/// <param name="type"></param>
/// <param name="extraData"></param>
/// <param name="consider"></param>
/// <param name="comparer"></param>
/// <returns></returns>
List <T> IInjectionScope.InternalLocateAll <T>(IExportLocatorScope scope, IDisposalScope disposalScope, Type type, object extraData, ActivationStrategyFilter consider, IComparer <T> comparer)
{
var returnList = new List <T>();
var context = CreateInjectionContextFromExtraData(typeof(T), extraData);
var collection = StrategyCollectionContainer.GetActivationStrategyCollection(type);
if (collection != null)
{
LocateEnumerablesFromStrategyCollection(collection, scope, disposalScope, type, context, consider, returnList);
}
if (type.IsConstructedGenericType)
{
var genericType = type.GetGenericTypeDefinition();
collection = StrategyCollectionContainer.GetActivationStrategyCollection(genericType);
if (collection != null)
{
LocateEnumerablesFromStrategyCollection(collection, scope, disposalScope, type, context, consider, returnList);
}
}
var injectionParent = Parent as IInjectionScope;
if (injectionParent != null)
{
returnList.AddRange(injectionParent.InternalLocateAll <T>(scope, disposalScope, type, context, consider, null));
}
if (comparer != null)
{
returnList.Sort(comparer);
}
return(returnList);
}
/// <summary>
/// Get a value dynamically
/// </summary>
/// <typeparam name="T">value to get</typeparam>
/// <param name="scope">scope</param>
/// <param name="disposalScope">disposal scope to use</param>
/// <param name="staticInjectionContext">static injection context </param>
/// <param name="context">context for call</param>
/// <param name="key"></param>
/// <param name="isRequired"></param>
/// <param name="hasDefault"></param>
/// <param name="defaultValue"></param>
/// <returns></returns>
public static T GetDynamicValue <T>(IExportLocatorScope scope, IDisposalScope disposalScope, StaticInjectionContext staticInjectionContext,
IInjectionContext context, object key, bool isRequired, bool hasDefault, object defaultValue)
{
var injectionScope = scope.GetInjectionScope();
var value = injectionScope.LocateFromChildScope(scope, disposalScope, typeof(T), context, null, key, true, true);
if (value != null)
{
return((T)value);
}
if (hasDefault)
{
return((T)defaultValue);
}
if (isRequired)
{
throw new LocateException(staticInjectionContext, $"Could not locate dynamic value for type {typeof(T).FullName}");
}
return(default(T));
}
public DisposalScopeInjectionService(IDisposalScope disposalScope)
{
DisposalScope = disposalScope;
}
/// <summary>
/// Method that creates Func
/// </summary>
/// <param name="scope"></param>
/// <param name="disposalScope"></param>
/// <param name="context"></param>
/// <returns></returns>
public Func <T1, T2, T3, T4, T5, TResult> CreateFunc(IExportLocatorScope scope, IDisposalScope disposalScope,
IInjectionContext context)
{
return((arg1, arg2, arg3, arg4, arg5) =>
{
var newContext = context?.Clone() ?? _injectionContextCreator.CreateContext(null);
newContext.SetExtraData(_t1Id, arg1);
newContext.SetExtraData(_t2Id, arg2);
newContext.SetExtraData(_t3Id, arg3);
newContext.SetExtraData(_t4Id, arg4);
newContext.SetExtraData(_t5Id, arg5);
return (TResult)_action(scope, disposalScope, newContext);
});
}
private void LocateEnumerablesFromStrategyCollection <TStrategy, TValue>(IActivationStrategyCollection <TStrategy> collection, IExportLocatorScope scope, IDisposalScope disposalScope, Type type, IInjectionContext context, ActivationStrategyFilter filter, List <TValue> returnList) where TStrategy : IWrapperOrExportActivationStrategy
{
foreach (var strategy in collection.GetStrategies())
{
if (strategy.HasConditions)
{
var pass = true;
foreach (var condition in strategy.Conditions)
{
if (!condition.MeetsCondition(strategy, new StaticInjectionContext(type)))
{
pass = false;
break;
}
}
if (!pass)
{
continue;
}
}
if (filter != null && !filter(strategy))
{
continue;
}
var activationDelegate = strategy.GetActivationStrategyDelegate(this, InternalFieldStorage.ActivationStrategyCompiler, type);
if (activationDelegate != null)
{
returnList.Add(
(TValue)activationDelegate(scope, disposalScope, context?.Clone()));
}
}
}
private static T AddDisposableWithCleanup <T>(IDisposalScope scope, T value, Action <T> cleanupAction) where T : IDisposalScope
{
return(GetDisposalScopeFromHttpContext(scope).AddDisposable(value, cleanupAction));
}
/// <summary>
///
/// </summary>
/// <param name="scope"></param>
/// <param name="disposalScope"></param>
/// <param name="exportName"></param>
/// <param name="extraData"></param>
/// <param name="consider"></param>
/// <returns></returns>
List <object> IInjectionScope.InternalLocateAllByName(IExportLocatorScope scope, IDisposalScope disposalScope, string exportName, object extraData, ActivationStrategyFilter consider)
{
var context = CreateContext(extraData);
var returnList = new List <object>();
var collection = StrategyCollectionContainer.GetActivationStrategyCollectionByName(exportName);
foreach (var strategy in collection.GetStrategies())
{
if (consider == null || consider(strategy))
{
var activation = strategy.GetActivationStrategyDelegate(this,
InternalFieldStorage.ActivationStrategyCompiler, typeof(object));
returnList.Add(activation(scope, disposalScope, context.Clone()));
}
}
var injectionScopeParent = Parent as IInjectionScope;
if (injectionScopeParent != null)
{
returnList.AddRange(injectionScopeParent.InternalLocateAllByName(scope, disposalScope, exportName, context, consider));
}
return(returnList);
}
/// <summary>
/// Create func
/// </summary>
/// <param name="scope"></param>
/// <param name="disposalScope"></param>
/// <param name="context"></param>
/// <returns></returns>
public Func <TResult> CreateFunc(IExportLocatorScope scope, IDisposalScope disposalScope, IInjectionContext context)
{
return(() => (TResult)_action(scope, disposalScope, context));
}
/// <summary>
///
/// </summary>
/// <param name="childScope"></param>
/// <param name="disposalScope"></param>
/// <param name="name"></param>
/// <param name="extraData"></param>
/// <param name="consider"></param>
/// <param name="allowNull"></param>
/// <returns></returns>
object IInjectionScope.LocateByNameFromChildScope(IExportLocatorScope childScope, IDisposalScope disposalScope,
string name,
object extraData, ActivationStrategyFilter consider, bool allowNull)
{
var collection = StrategyCollectionContainer.GetActivationStrategyCollectionByName(name);
ICompiledExportStrategy strategy = null;
if (collection != null)
{
if (consider != null)
{
var context = new StaticInjectionContext(typeof(object));
strategy =
collection.GetStrategies()
.FirstOrDefault(
s => (!s.HasConditions || s.Conditions.All(con => con.MeetsCondition(s, context))) && consider(s));
}
else
{
strategy = collection.GetPrimary();
if (strategy == null)
{
var context = new StaticInjectionContext(typeof(object));
strategy = collection.GetStrategies()
.FirstOrDefault(
s => !s.HasConditions || s.Conditions.All(con => con.MeetsCondition(s, context)));
}
}
}
if (strategy != null)
{
var strategyDelegate =
strategy.GetActivationStrategyDelegate(this, InternalFieldStorage.ActivationStrategyCompiler, typeof(object));
return(strategyDelegate(childScope, disposalScope, CreateContext(extraData)));
}
if (Parent != null)
{
return(((IInjectionScope)Parent).LocateByNameFromChildScope(childScope, disposalScope, name, extraData,
consider, allowNull));
}
if (!allowNull)
{
throw new LocateException(new StaticInjectionContext(typeof(object)));
}
return(null);
}
/// <summary>
/// Locate an export from a child scope
/// </summary>
/// <param name="childScope">scope where the locate originated</param>
/// <param name="disposalScope"></param>
/// <param name="type">type to locate</param>
/// <param name="extraData"></param>
/// <param name="consider"></param>
/// <param name="key"></param>
/// <param name="allowNull"></param>
/// <param name="isDynamic"></param>
/// <returns>configuration object</returns>
object IInjectionScope.LocateFromChildScope(IExportLocatorScope childScope, IDisposalScope disposalScope, Type type, object extraData, ActivationStrategyFilter consider, object key, bool allowNull, bool isDynamic)
{
return(InternalLocate(childScope, disposalScope, type, consider, key, CreateInjectionContextFromExtraData(type, extraData), allowNull, isDynamic));
}
public DisposalScopeImportService(IDisposalScope scope)
{
Scope = scope;
}
private static T AddDisposable <T>(IDisposalScope scope, T value) where T : IDisposalScope
{
return(GetDisposalScopeFromHttpContext(scope).AddDisposable(value));
}