public static IGraphQLBuilder AddSelfActivatingSchema <TSchema>(this IGraphQLBuilder builder, ServiceLifetime serviceLifetime = ServiceLifetime.Singleton)
where TSchema : class, ISchema
{
if (serviceLifetime == ServiceLifetime.Transient && typeof(IDisposable).IsAssignableFrom(typeof(TSchema)))
{
// This scenario can cause a memory leak if the schema is requested from the root service provider.
// If it was requested from a scoped provider, then there is no reason to register it as transient.
// See following link:
// https://docs.microsoft.com/en-us/dotnet/core/extensions/dependency-injection-guidelines#disposable-transient-services-captured-by-container
throw new InvalidOperationException("A schema that implements IDisposable should not be registered as a transient service. " +
"See https://docs.microsoft.com/en-us/dotnet/core/extensions/dependency-injection-guidelines#disposable-transient-services-captured-by-container");
}
// Register the service with the DI provider as TSchema, overwriting any existing registration
builder.Register(provider =>
{
var selfActivatingServices = new SelfActivatingServiceProvider(provider);
var schema = ActivatorUtilities.CreateInstance <TSchema>(selfActivatingServices);
return(schema);
}, serviceLifetime);
// Now register the service as ISchema if not already registered.
builder.TryRegister <ISchema>(provider =>
{
var selfActivatingServices = new SelfActivatingServiceProvider(provider);
var schema = ActivatorUtilities.CreateInstance <TSchema>(selfActivatingServices);
return(schema);
}, serviceLifetime);
return(builder);
}
public static IGraphQLBuilder AddDataLoader(this IGraphQLBuilder builder)
{
builder.AddDocumentListener <DataLoaderDocumentListener>();
builder.Register <IDataLoaderContextAccessor, DataLoaderContextAccessor>(ServiceLifetime.Singleton);
return(builder);
}