public IxResolver( IxHost host, IIxInstance ownerInstance, [CanBeNull] IxResolveContext parentContext, [CanBeNull] IxResolveFrame parentFrame) { if (host == null) { throw new ArgumentNullException(nameof(host)); } if (ownerInstance == null) { throw new ArgumentNullException(nameof(ownerInstance)); } if (parentFrame != null) { if (parentContext == null) { throw new ArgumentNullException(); } } Host = host; OwnerInstance = ownerInstance; ParentFrame = parentFrame; ParentContext = parentContext; }
private async ValueTask <IIxInstanceLock> Resolve( IIxInstance originInstance, IxIdentifier identifier, IxResolveContext context, [CanBeNull] IxResolveFrame frame) { if (originInstance == null) { throw new ArgumentNullException(nameof(originInstance)); } if (context == null) { throw new ArgumentNullException(nameof(context)); } if (originInstance.ProviderNode.Host != this) { throw new InvalidOperationException("You cannot use resolver from different host."); } ////if (context.IsFailed) ////{ //// throw new InvalidOperationException("You cannot do anything inside failed resolve context."); ////} return(await ResolveHandler.Delegate(originInstance, identifier, context, frame)); }
/// <summary> /// Resolves list of <c>dependencies</c> from the specified origin. TODO: Implement <c>this</c> method with parallel /// resolution. /// </summary> /// <typeparam name="TResult">Target operation result type.</typeparam> /// <param name="originInstance">Origin instance. Where <c>dependencies</c> are queried.</param> /// <param name="dependencies">List of dependency identifiers.</param> /// <param name="context">Resolve <c>context</c>.</param> /// <param name="frame">The resolve sequence frame.</param> /// <param name="targetOperation">Operation that should be performed with resolved <c>dependencies</c>.</param> /// <returns>Result of target opration.</returns> public async ValueTask <TResult> ResolveList <TResult>( IIxInstance originInstance, HashSet <IxIdentifier> dependencies, IxResolveContext context, [CanBeNull] IxResolveFrame frame, Func <Dictionary <IxIdentifier, IIxInstance>, ValueTask <TResult> > targetOperation) { if (originInstance == null) { throw new ArgumentNullException(nameof(originInstance)); } if (dependencies == null) { throw new ArgumentNullException(nameof(dependencies)); } if (context == null) { throw new ArgumentNullException(nameof(context)); } if (targetOperation == null) { throw new ArgumentNullException(nameof(targetOperation)); } using (HashSet <IxIdentifier> .Enumerator enumerator = dependencies.GetEnumerator()) { var result = new Dictionary <IxIdentifier, IIxInstance>(); async ValueTask <TResult> ResolveItem() { // ReSharper disable once AccessToDisposedClosure if (!enumerator.MoveNext()) { return(await targetOperation(result)); } // ReSharper disable once AccessToDisposedClosure IxIdentifier identifier = enumerator.Current; using (IIxInstanceLock instanceLock = await Resolve(originInstance, identifier, context, frame)) { result.Add(identifier, instanceLock.Target); TResult resultItem = await ResolveItem(); if (identifier.Type == typeof(IIxResolver)) { (instanceLock.Target as IxResolver)?.ClearParentResolveContext(); } return(resultItem); } } return(await ResolveItem()); } }
private async ValueTask <IIxInstanceLock> RegistrationScopeBinder( IIxInstance originInstance, IxResolvePath resolvePath, IxResolveContext context, [CanBeNull] IxResolveFrame frame, IxResolveBoundDelegate resolveBound) { IIxInstance curInstance = originInstance; Critical.Assert(resolvePath.Path.Any(), "Registration scope binder does not support empty path."); lock (InstanceTreeSyncRoot) { while (curInstance != null) { if (curInstance.ProviderNode == resolvePath.Root) { break; } curInstance = curInstance.ParentInstance; } } if (curInstance == null) { throw new InvalidOperationException("Resolve algorithms problems"); } Func <IIxInstance, int, ValueTask <IIxInstanceLock> > resolvePathElements = null; resolvePathElements = async(parentInstance, index) => { if (index < resolvePath.Path.Count - 1) { using (IIxInstanceLock instanceLock = await Resolve( parentInstance, resolvePath.Path[index].Identifier, context, frame)) { return(await resolvePathElements(instanceLock.Target, index + 1)); } } return(await resolveBound(parentInstance, resolvePath.Path.Last(), context)); }; IIxInstanceLock resultInstanceLock = await resolvePathElements(curInstance, 0); return(resultInstanceLock); }
public async ValueTask <IIxInstanceLock> Resolve( IxIdentifier identifier, IReadOnlyDictionary <IxIdentifier, object> arguments = null) { var context = new IxResolveContext( OwnerInstance, ParentContext, arguments ?? new Dictionary <IxIdentifier, object>()); using (new IxInstancePinLock(OwnerInstance)) { return(await Host.Resolve(OwnerInstance, identifier, context, ParentFrame)); } }
public IxResolveContext( IIxInstance originInstance, [CanBeNull] IxResolveContext parentContext, IReadOnlyDictionary <IxIdentifier, object> arguments) { Critical.CheckedAssert(originInstance != null, "Origin instance should be null."); Critical.CheckedAssert(arguments != null, "Arguments dictionary should not be null."); Arguments = arguments; _originInstance = originInstance; ParentContext = parentContext; _rootContext = parentContext?._rootContext ?? this; Critical.CheckedAssert(_rootContext != null, "Root context should not be null."); }
/// <summary> /// Second initialization phase. /// </summary> /// <param name="config">Host configuration.</param> /// <returns>Async execution TPL task.</returns> public async Task Initialize(IIxHostConfig config) { var allConfigNodes = new HashSet <IIxProviderNodeConfig>(); config.Nodes.Add( new IxStdProviderConfig { Identifier = new IxIdentifier(typeof(IIxHost)), InstanceBuilder = new IxExistingInstanceFactoryConfig <IIxHost>(this), DisposeHandler = obj => TaskEx.CompletedTask }); Action <IIxProviderNodeConfig, IxProviderNode> buildNodeAction = null; buildNodeAction = (nodeConfig, parentNode) => { if (!allConfigNodes.Add(nodeConfig)) { throw new InvalidOperationException( "Configuration contains the same object multiple times. Currently it's not allowed to avoid visitor cycles."); } IxProviderNode node = ProviderNodeBuilder.Delegate(nodeConfig, parentNode); // parent node is null only for root scope. if (parentNode == null) { _rootScope = (IxScope)node; } foreach (IIxProviderNodeConfig childConfig in nodeConfig.Nodes) { buildNodeAction(childConfig, node); } }; buildNodeAction(config, null); Action <IxProviderNode> importRegistrationsFromChildren = null; importRegistrationsFromChildren = node => { foreach (IxProviderNode child in node.Nodes) { importRegistrationsFromChildren(child); // Applying export to parent filter // while Blocking from exporting resolve pathes with zero-length. foreach (KeyValuePair <IxIdentifier, IxResolvePath> kvp in child.VisibleNodes.Where( x => child.ExportToParentFilter(x.Key) && x.Value.Path.Any())) { if (node.VisibleNodes.ContainsKey(kvp.Key)) { throw new InvalidOperationException("Export to parent node conflict."); } node.VisibleNodes.Add(kvp.Key, kvp.Value.ReRoot(node)); } } }; importRegistrationsFromChildren(_rootScope); Action <IxProviderNode> exportRegistrationsToChildren = null; exportRegistrationsToChildren = node => { KeyValuePair <IxIdentifier, IxResolvePath>[] registrationsToExport = node.VisibleNodes.Where(x => node.ExportFilter(x.Key)).ToArray(); if (!registrationsToExport.Any()) { return; } foreach (IxProviderNode child in node.Nodes) { foreach (KeyValuePair <IxIdentifier, IxResolvePath> kvp in registrationsToExport.Where(x => child.ImportFilter(x.Key))) { IxResolvePath resolvePath; if (child.VisibleNodes.TryGetValue(kvp.Key, out resolvePath)) { // Skipping self to children. if (resolvePath.Path.Any()) { // Direct cycle resolution replacement. if (!resolvePath.Target.ParentReplacementNodes.ContainsKey(kvp.Key)) { resolvePath.Target.ParentReplacementNodes.Add(kvp.Key, kvp.Value); } } } else { child.VisibleNodes.Add(kvp.Key, kvp.Value); } } exportRegistrationsToChildren(child); } }; exportRegistrationsToChildren(_rootScope); _rootScopeInstance = _rootScope.GetRootInstance(); var resolveContext = new IxResolveContext(_rootScopeInstance, null, new Dictionary <IxIdentifier, object>()); using (IIxInstanceLock rootResolverLock = await Resolve( _rootScopeInstance, new IxIdentifier(typeof(IIxResolver)), resolveContext, null)) { var resolver = (IxResolver)rootResolverLock.Target.Object; Critical.CheckedAssert( resolver.ParentContext == null && resolver.ParentFrame == null, "After resolve finished, resolver should not be bound to any context."); Resolver = resolver; } }
public void ClearParentResolveContext() { ParentFrame = null; ParentContext = null; }