/// <summary>
/// Creates a <see cref="ServiceProvider"/> containing services from the provided <see cref="IServiceCollection"/>
/// optionally enabling scope validation.
/// </summary>
/// <param name="services">The <see cref="IServiceCollection"/> containing service descriptors.</param>
/// <param name="options">
/// Configures various service provider behaviors.
/// </param>
/// <returns>The <see cref="ServiceProvider"/>.</returns>
public static ServiceProvider BuildServiceProvider(this IServiceCollection services, ServiceProviderOptions options)
{
if (services == null)
{
throw new ArgumentNullException(nameof(services));
}
if (options == null)
{
throw new ArgumentNullException(nameof(options));
}
IServiceProviderEngine engine;
#if !NETSTANDARD2_1
engine = new DynamicServiceProviderEngine(services);
#else
if (RuntimeFeature.IsDynamicCodeCompiled)
{
engine = new DynamicServiceProviderEngine(services);
}
else
{
// Don't try to compile Expressions/IL if they are going to get interpreted
engine = new RuntimeServiceProviderEngine(services);
}
#endif
return(new ServiceProvider(services, engine, options));
}
// We are not testing singleton here because singleton resolutions always got through
// runtime resolver and there is no sense to eliminating call from there
public void BuildExpressionElidesDisposableCaptureForNonDisposableServices(ServiceLifetime lifetime)
{
IServiceCollection descriptors = new ServiceCollection();
descriptors.Add(ServiceDescriptor.Describe(typeof(ServiceA), typeof(ServiceA), lifetime));
descriptors.Add(ServiceDescriptor.Describe(typeof(ServiceB), typeof(ServiceB), lifetime));
descriptors.Add(ServiceDescriptor.Describe(typeof(ServiceC), typeof(ServiceC), lifetime));
descriptors.AddScoped <ServiceB>();
descriptors.AddTransient <ServiceC>();
var disposables = new List <object>();
var provider = new DynamicServiceProviderEngine(descriptors);
provider.Root._captureDisposableCallback = obj =>
{
disposables.Add(obj);
};
var callSite = provider.CallSiteFactory.GetCallSite(typeof(ServiceC), new CallSiteChain());
var compiledCallSite = CompileCallSite(callSite, provider);
var serviceC = (ServiceC)compiledCallSite(provider.Root);
Assert.Empty(disposables);
}
public void DoesNotThrowWhenServiceIsUsedAsEnumerableAndNotInOneCallSite()
{
var descriptors = new ServiceCollection();
descriptors.AddTransient <ServiceA>();
descriptors.AddTransient <ServiceD>();
descriptors.AddTransient <ServiceE>();
var provider = new DynamicServiceProviderEngine(descriptors);
var callSite1 = provider.CallSiteFactory.GetCallSite(typeof(ServiceE), new CallSiteChain());
var compileCallSite = CompileCallSite(callSite1, provider);
Assert.NotNull(compileCallSite);
}
public void BuiltExpressionCanResolveNestedScopedService()
{
var descriptors = new ServiceCollection();
descriptors.AddScoped <ServiceA>();
descriptors.AddScoped <ServiceB>();
descriptors.AddScoped <ServiceC>();
var provider = new DynamicServiceProviderEngine(descriptors, null);
var callSite = provider.CallSiteFactory.CreateCallSite(typeof(ServiceC), new CallSiteChain());
var compiledCallSite = CompileCallSite(callSite, provider);
var serviceC = (ServiceC)compiledCallSite(provider.Root);
Assert.NotNull(serviceC.ServiceB.ServiceA);
Assert.Equal(serviceC, Invoke(callSite, provider));
}
private ServiceProviderEngine GetEngine()
{
ServiceProviderEngine engine;
#if NETFRAMEWORK || NETSTANDARD2_0
engine = new DynamicServiceProviderEngine(this);
#else
if (RuntimeFeature.IsDynamicCodeCompiled)
{
engine = new DynamicServiceProviderEngine(this);
}
else
{
// Don't try to compile Expressions/IL if they are going to get interpreted
engine = RuntimeServiceProviderEngine.Instance;
}
#endif
return(engine);
}
// We are not testing singleton here because singleton resolutions always got through
// runtime resolver and there is no sense to eliminating call from there
public void BuildExpressionElidesDisposableCaptureForEnumerableServices(ServiceLifetime lifetime)
{
IServiceCollection descriptors = new ServiceCollection();
descriptors.Add(ServiceDescriptor.Describe(typeof(ServiceA), typeof(ServiceA), lifetime));
descriptors.Add(ServiceDescriptor.Describe(typeof(ServiceD), typeof(ServiceD), lifetime));
var disposables = new List <object>();
var provider = new DynamicServiceProviderEngine(descriptors, null);
provider.Root._captureDisposableCallback = obj =>
{
disposables.Add(obj);
};
var callSite = provider.CallSiteFactory.CreateCallSite(typeof(ServiceD), new HashSet <Type>());
var compiledCallSite = CompileCallSite(callSite, provider);
var serviceD = (ServiceD)compiledCallSite(provider.Root);
Assert.Empty(disposables);
}
public void BuildExpressionAddsDisposableCaptureForDisposableServices(ServiceLifetime lifetime)
{
IServiceCollection descriptors = new ServiceCollection();
descriptors.Add(ServiceDescriptor.Describe(typeof(ServiceA), typeof(DisposableServiceA), lifetime));
descriptors.Add(ServiceDescriptor.Describe(typeof(ServiceB), typeof(DisposableServiceB), lifetime));
descriptors.Add(ServiceDescriptor.Describe(typeof(ServiceC), typeof(DisposableServiceC), lifetime));
var disposables = new List <object>();
var provider = new DynamicServiceProviderEngine(descriptors, null);
provider.Root._captureDisposableCallback = obj =>
{
disposables.Add(obj);
};
var callSite = provider.CallSiteFactory.CreateCallSite(typeof(ServiceC), new CallSiteChain());
var compiledCallSite = CompileCallSite(callSite, provider);
var serviceC = (DisposableServiceC)compiledCallSite(provider.Root);
Assert.Equal(3, disposables.Count);
}
public void BuiltExpressionWillReturnResolvedServiceWhenAppropriate(
ServiceDescriptor[] descriptors, Type serviceType, Func <object, object, bool> compare)
{
var provider = new DynamicServiceProviderEngine(descriptors, null);
var callSite = provider.CallSiteFactory.CreateCallSite(serviceType, new CallSiteChain());
var collectionCallSite = provider.CallSiteFactory.CreateCallSite(typeof(IEnumerable <>).MakeGenericType(serviceType), new CallSiteChain());
var compiledCallSite = CompileCallSite(callSite, provider);
var compiledCollectionCallSite = CompileCallSite(collectionCallSite, provider);
var service1 = Invoke(callSite, provider);
var service2 = compiledCallSite(provider.Root);
var serviceEnumerator = ((IEnumerable)compiledCollectionCallSite(provider.Root)).GetEnumerator();
Assert.NotNull(service1);
Assert.True(compare(service1, service2));
// Service can be IEnumerable resolved. The IEnumerable should have exactly one element.
Assert.True(serviceEnumerator.MoveNext());
Assert.True(compare(service1, serviceEnumerator.Current));
Assert.False(serviceEnumerator.MoveNext());
}
public void BuiltExpressionRethrowsOriginalExceptionFromConstructor()
{
var descriptors = new ServiceCollection();
descriptors.AddTransient <ClassWithThrowingEmptyCtor>();
descriptors.AddTransient <ClassWithThrowingCtor>();
descriptors.AddTransient <IFakeService, FakeService>();
var provider = new DynamicServiceProviderEngine(descriptors);
var callSite1 = provider.CallSiteFactory.GetCallSite(typeof(ClassWithThrowingEmptyCtor), new CallSiteChain());
var compiledCallSite1 = CompileCallSite(callSite1, provider);
var callSite2 = provider.CallSiteFactory.GetCallSite(typeof(ClassWithThrowingCtor), new CallSiteChain());
var compiledCallSite2 = CompileCallSite(callSite2, provider);
var ex1 = Assert.Throws <Exception>(() => compiledCallSite1(provider.Root));
Assert.Equal(nameof(ClassWithThrowingEmptyCtor), ex1.Message);
var ex2 = Assert.Throws <Exception>(() => compiledCallSite2(provider.Root));
Assert.Equal(nameof(ClassWithThrowingCtor), ex2.Message);
}