internal ServiceDependency InstantiateDependency(ParameterInfo formalParameter, ContainerService.Builder builder) { ValueWithType actualArgument; if (builder.Arguments != null && builder.Arguments.TryGet(formalParameter.Name, out actualArgument)) { return(containerContext.Constant(formalParameter, actualArgument.value)); } var parameters = builder.Configuration.ParametersSource; object actualParameter; if (parameters != null && parameters.TryGet(formalParameter.Name, formalParameter.ParameterType, out actualParameter)) { return(containerContext.Constant(formalParameter, actualParameter)); } var dependencyConfiguration = builder.Configuration.GetOrNull(formalParameter); Type implementationType = null; if (dependencyConfiguration != null) { if (dependencyConfiguration.ValueAssigned) { return(containerContext.Constant(formalParameter, dependencyConfiguration.Value)); } if (dependencyConfiguration.Factory != null) { var dependencyBuilder = new ContainerService.Builder(new ServiceName(formalParameter.ParameterType)) { Context = builder.Context, DependencyName = formalParameter.Name }; builder.Context.Stack.Add(dependencyBuilder); dependencyBuilder.CreateInstanceBy(CallTarget.F(dependencyConfiguration.Factory), true); builder.Context.Stack.RemoveLast(); return(dependencyBuilder.GetService().AsDependency(containerContext, formalParameter.Name, false)); } implementationType = dependencyConfiguration.ImplementationType; } implementationType = implementationType ?? formalParameter.ParameterType; FromResourceAttribute resourceAttribute; if (implementationType == typeof(Stream) && formalParameter.TryGetCustomAttribute(out resourceAttribute)) { var resourceStream = builder.Type.Assembly.GetManifestResourceStream(builder.Type, resourceAttribute.Name); if (resourceStream == null) { return(containerContext.Error(null, formalParameter.Name, "can't find resource [{0}] in namespace of [{1}], assembly [{2}]", resourceAttribute.Name, builder.Type, builder.Type.Assembly.GetName().Name)); } return(containerContext.Resource(formalParameter, resourceAttribute.Name, resourceStream)); } var dependencyName = ServiceName.Parse(implementationType.UnwrapEnumerable(), InternalHelpers.ParseContracts(formalParameter)); if (dependencyName.Type.IsSimpleType()) { if (!formalParameter.HasDefaultValue) { return(containerContext.Error(null, formalParameter.Name, "parameter [{0}] of service [{1}] is not configured", formalParameter.Name, builder.Type.FormatName())); } return(containerContext.Constant(formalParameter, formalParameter.DefaultValue)); } var resultService = ResolveCore(dependencyName, false, null, builder.Context); if (resultService.Status.IsBad()) { return(containerContext.ServiceError(resultService)); } var isEnumerable = dependencyName.Type != implementationType; if (isEnumerable) { return(containerContext.Service(resultService, resultService.GetAllValues())); } if (resultService.Status == ServiceStatus.NotResolved) { if (formalParameter.HasDefaultValue) { return(containerContext.Service(resultService, formalParameter.DefaultValue)); } if (formalParameter.IsDefined <OptionalAttribute>() || formalParameter.IsDefined("CanBeNullAttribute")) { return(containerContext.Service(resultService, null)); } return(containerContext.NotResolved(resultService)); } return(resultService.AsDependency(containerContext, null, false)); }
private void InstantiateImplementation(ContainerService.Builder builder) { if (builder.DontUse()) { builder.SetComment("DontUse"); return; } var result = FactoryCreator.TryCreate(builder) ?? LazyCreator.TryCreate(builder); if (result != null) { builder.AddInstance(result, true, false); return; } if (NestedFactoryCreator.TryCreate(builder)) { return; } if (CtorFactoryCreator.TryCreate(builder)) { return; } if (builder.Type.IsDelegate()) { builder.SetError(string.Format("can't create delegate [{0}]", builder.Type.FormatName())); return; } var constructor = builder.Type.GetConstructor(); if (!constructor.isOk) { builder.SetError(constructor.errorMessage); return; } var formalParameters = constructor.value.GetParameters(); var actualArguments = new object[formalParameters.Length]; var hasServiceNameParameters = false; for (var i = 0; i < formalParameters.Length; i++) { var formalParameter = formalParameters[i]; if (formalParameter.ParameterType == typeof(ServiceName)) { hasServiceNameParameters = true; continue; } var dependency = InstantiateDependency(formalParameter, builder).CastTo(formalParameter.ParameterType); builder.AddDependency(dependency, false); if (dependency.ContainerService != null) { builder.UnionUsedContracts(dependency.ContainerService); } if (builder.Status != ServiceStatus.Ok && !builder.Context.AnalizeDependenciesOnly) { return; } actualArguments[i] = dependency.Value; } foreach (var d in builder.Configuration.ImplicitDependencies) { var dependency = ResolveCore(ServiceName.Parse(d.Type, d.Contracts), false, null, builder.Context) .AsDependency(containerContext, null, false); dependency.Comment = "implicit"; builder.AddDependency(dependency, false); if (dependency.ContainerService != null) { builder.UnionUsedContracts(dependency.ContainerService); } if (builder.Status != ServiceStatus.Ok) { return; } } builder.EndResolveDependencies(); if (builder.Context.AnalizeDependenciesOnly) { return; } var dependenciesResolvedByArguments = builder.Arguments == null ? null : builder.Arguments.GetUsed(); List <string> unusedConfigurationKeys = null; foreach (var k in builder.Configuration.GetUnusedDependencyKeys()) { var resolvedByArguments = dependenciesResolvedByArguments != null && k.name != null && dependenciesResolvedByArguments.Contains(k.name); if (resolvedByArguments) { continue; } if (unusedConfigurationKeys == null) { unusedConfigurationKeys = new List <string>(); } unusedConfigurationKeys.Add(k.ToString()); } if (unusedConfigurationKeys != null) { builder.SetError(string.Format("unused dependency configurations [{0}]", unusedConfigurationKeys.JoinStrings(","))); return; } if (hasServiceNameParameters) { for (var i = 0; i < formalParameters.Length; i++) { if (formalParameters[i].ParameterType == typeof(ServiceName)) { actualArguments[i] = builder.GetFinalName(); } } } if (builder.CreateNew || builder.DeclaredContracts.Length == builder.FinalUsedContracts.Length) { builder.CreateInstanceBy(CallTarget.M(constructor.value, null, actualArguments), true); if (builder.CreateNew && builder.Arguments == null) { var compiledConstructor = constructor.value.Compile(); factoryCache.TryAdd(builder.GetFinalName(), () => { var instance = compiledConstructor(null, actualArguments); var component = instance as IInitializable; if (component != null) { component.Initialize(); } return(instance); }); } return; } var serviceForUsedContractsId = instanceCache.GetOrAdd(builder.GetFinalName(), createId); var acquireResult = serviceForUsedContractsId.AcquireInstantiateLock(); if (acquireResult.acquired) { builder.CreateInstanceBy(CallTarget.M(constructor.value, null, actualArguments), true); serviceForUsedContractsId.ReleaseInstantiateLock(builder.Context.AnalizeDependenciesOnly ? null : builder.GetService()); } else { builder.Reuse(acquireResult.alreadyConstructedService); } }
internal ContainerService ResolveCore(ServiceName name, bool createNew, IObjectAccessor arguments, ResolutionContext context) { var pushedContracts = context.Contracts.Push(name.Contracts); var declaredName = new ServiceName(name.Type, context.Contracts.Snapshot()); if (context.HasCycle(declaredName)) { var message = string.Format("cyclic dependency for service [{0}], stack\r\n{1}", declaredName.Type.FormatName(), context.FormatStack() + "\r\n\t" + declaredName); context.Contracts.RemoveLast(pushedContracts.pushedContractsCount); return ContainerService.Error(declaredName, message); } if (!pushedContracts.isOk) { const string messageFormat = "contract [{0}] already declared, stack\r\n{1}"; var message = string.Format(messageFormat, pushedContracts.duplicatedContractName, context.FormatStack() + "\r\n\t" + name); context.Contracts.RemoveLast(pushedContracts.pushedContractsCount); return ContainerService.Error(name, message); } context.ConstructingServices.Add(declaredName); ServiceConfiguration configuration = null; Exception configurationException = null; try { configuration = GetConfiguration(declaredName.Type, context); } catch (Exception e) { configurationException = e; } var actualName = configuration != null && configuration.FactoryDependsOnTarget && context.Stack.Count > 0 ? declaredName.AddContracts(context.TopBuilder.Type.FormatName()) : declaredName; ContainerServiceId id = null; if (!createNew) { id = instanceCache.GetOrAdd(actualName, createId); var acquireResult = id.AcquireInstantiateLock(); if (!acquireResult.acquired) { context.ConstructingServices.Remove(declaredName); context.Contracts.RemoveLast(pushedContracts.pushedContractsCount); return acquireResult.alreadyConstructedService; } } var builder = new ContainerService.Builder(actualName); context.Stack.Add(builder); builder.Context = context; builder.DeclaredContracts = actualName.Contracts; if (configuration == null) builder.SetError(configurationException); else { builder.SetConfiguration(configuration); builder.ExpandedUnions = context.Contracts.TryExpandUnions(Configuration); if (builder.ExpandedUnions.HasValue) { var poppedContracts = context.Contracts.PopMany(builder.ExpandedUnions.Value.contracts.Length); foreach (var c in builder.ExpandedUnions.Value.contracts.CartesianProduct()) { var childService = ResolveCore(new ServiceName(name.Type, c), createNew, arguments, context); builder.LinkTo(containerContext, childService, null); if (builder.Status.IsBad()) break; } context.Contracts.PushNoCheck(poppedContracts); } else { builder.CreateNew = createNew; builder.Arguments = arguments; Instantiate(builder); } } context.ConstructingServices.Remove(declaredName); context.Contracts.RemoveLast(pushedContracts.pushedContractsCount); context.Stack.RemoveLast(); var result = builder.GetService(); if (id != null) id.ReleaseInstantiateLock(builder.Context.AnalizeDependenciesOnly ? null : result); return result; }
internal ContainerService ResolveCore(ServiceName name, bool createNew, IObjectAccessor arguments, ResolutionContext context) { var pushedContracts = context.Contracts.Push(name.Contracts); var declaredName = new ServiceName(name.Type, context.Contracts.Snapshot()); if (context.HasCycle(declaredName)) { var message = string.Format("cyclic dependency for service [{0}], stack\r\n{1}", declaredName.Type.FormatName(), context.FormatStack() + "\r\n\t" + declaredName); context.Contracts.RemoveLast(pushedContracts.pushedContractsCount); return(ContainerService.Error(declaredName, message)); } if (!pushedContracts.isOk) { const string messageFormat = "contract [{0}] already declared, stack\r\n{1}"; var message = string.Format(messageFormat, pushedContracts.duplicatedContractName, context.FormatStack() + "\r\n\t" + name); context.Contracts.RemoveLast(pushedContracts.pushedContractsCount); return(ContainerService.Error(name, message)); } context.ConstructingServices.Add(declaredName); ServiceConfiguration configuration = null; Exception configurationException = null; try { configuration = GetConfiguration(declaredName.Type, context); } catch (Exception e) { configurationException = e; } var actualName = configuration != null && configuration.FactoryDependsOnTarget && context.Stack.Count > 0 ? declaredName.AddContracts(context.TopBuilder.Type.FormatName()) : declaredName; ContainerServiceId id = null; if (!createNew) { id = instanceCache.GetOrAdd(actualName, createId); var acquireResult = id.AcquireInstantiateLock(); if (!acquireResult.acquired) { context.ConstructingServices.Remove(declaredName); context.Contracts.RemoveLast(pushedContracts.pushedContractsCount); return(acquireResult.alreadyConstructedService); } } var builder = new ContainerService.Builder(actualName); context.Stack.Add(builder); builder.Context = context; builder.DeclaredContracts = actualName.Contracts; if (configuration == null) { builder.SetError(configurationException); } else { builder.SetConfiguration(configuration); builder.ExpandedUnions = context.Contracts.TryExpandUnions(Configuration); if (builder.ExpandedUnions.HasValue) { var poppedContracts = context.Contracts.PopMany(builder.ExpandedUnions.Value.contracts.Length); foreach (var c in builder.ExpandedUnions.Value.contracts.CartesianProduct()) { var childService = ResolveCore(new ServiceName(name.Type, c), createNew, arguments, context); builder.LinkTo(containerContext, childService, null); if (builder.Status.IsBad()) { break; } } context.Contracts.PushNoCheck(poppedContracts); } else { builder.CreateNew = createNew; builder.Arguments = arguments; Instantiate(builder); } } context.ConstructingServices.Remove(declaredName); context.Contracts.RemoveLast(pushedContracts.pushedContractsCount); context.Stack.RemoveLast(); var result = builder.GetService(); if (id != null) { id.ReleaseInstantiateLock(builder.Context.AnalizeDependenciesOnly ? null : result); } return(result); }
internal ServiceDependency InstantiateDependency(ParameterInfo formalParameter, ContainerService.Builder builder) { ValueWithType actualArgument; if (builder.Arguments != null && builder.Arguments.TryGet(formalParameter.Name, out actualArgument)) return containerContext.Constant(formalParameter, actualArgument.value); var parameters = builder.Configuration.ParametersSource; object actualParameter; if (parameters != null && parameters.TryGet(formalParameter.Name, formalParameter.ParameterType, out actualParameter)) return containerContext.Constant(formalParameter, actualParameter); var dependencyConfiguration = builder.Configuration.GetOrNull(formalParameter); Type implementationType = null; if (dependencyConfiguration != null) { if (dependencyConfiguration.ValueAssigned) return containerContext.Constant(formalParameter, dependencyConfiguration.Value); if (dependencyConfiguration.Factory != null) { var dependencyBuilder = new ContainerService.Builder(new ServiceName(formalParameter.ParameterType)) { Context = builder.Context, DependencyName = formalParameter.Name }; builder.Context.Stack.Add(dependencyBuilder); dependencyBuilder.CreateInstanceBy(CallTarget.F(dependencyConfiguration.Factory), true); builder.Context.Stack.RemoveLast(); return dependencyBuilder.GetService().AsDependency(containerContext, formalParameter.Name, false); } implementationType = dependencyConfiguration.ImplementationType; } implementationType = implementationType ?? formalParameter.ParameterType; FromResourceAttribute resourceAttribute; if (implementationType == typeof (Stream) && formalParameter.TryGetCustomAttribute(out resourceAttribute)) { var resourceStream = builder.Type.Assembly.GetManifestResourceStream(builder.Type, resourceAttribute.Name); if (resourceStream == null) return containerContext.Error(null, formalParameter.Name, "can't find resource [{0}] in namespace of [{1}], assembly [{2}]", resourceAttribute.Name, builder.Type, builder.Type.Assembly.GetName().Name); return containerContext.Resource(formalParameter, resourceAttribute.Name, resourceStream); } var dependencyName = ServiceName.Parse(implementationType.UnwrapEnumerable(), InternalHelpers.ParseContracts(formalParameter)); if (dependencyName.Type.IsSimpleType()) { if (!formalParameter.HasDefaultValue) return containerContext.Error(null, formalParameter.Name, "parameter [{0}] of service [{1}] is not configured", formalParameter.Name, builder.Type.FormatName()); return containerContext.Constant(formalParameter, formalParameter.DefaultValue); } var resultService = ResolveCore(dependencyName, false, null, builder.Context); if (resultService.Status.IsBad()) return containerContext.ServiceError(resultService); var isEnumerable = dependencyName.Type != implementationType; if (isEnumerable) return containerContext.Service(resultService, resultService.GetAllValues()); if (resultService.Status == ServiceStatus.NotResolved) { if (formalParameter.HasDefaultValue) return containerContext.Service(resultService, formalParameter.DefaultValue); if (formalParameter.IsDefined<OptionalAttribute>() || formalParameter.IsDefined("CanBeNullAttribute")) return containerContext.Service(resultService, null); return containerContext.NotResolved(resultService); } return resultService.AsDependency(containerContext, null, false); }