public void Fact1()
{
services.AddScoped <TestService>();
using (var provider = services.BuildServiceProvider())
{
var rootInstance = provider.GetService <TestService>();
using (var sut = new ServiceScopeExtension(provider))
{
Assert.NotSame(provider, sut.ScopedServiceProvider);
var scopedService1 = sut.ScopedServiceProvider.GetService <TestService>();
var scopedService2 = sut.ScopedServiceProvider.GetService <TestService>();
Assert.NotSame(rootInstance, scopedService1);
Assert.Same(scopedService1, scopedService1);
}
}
}
/// <summary>
/// Returns a service object given the specified <see cref="InstanceContext"/> object.
/// </summary>
/// <param name="instanceContext">The current <see cref="InstanceContext"/> object.</param>
/// <param name="message">The message that triggered the creation of a service object.</param>
/// <returns>The service object.</returns>
/// <exception cref="ArgumentNullException">
/// Thrown if <paramref name="instanceContext" /> is <see langword="null" />.
/// </exception>
public object GetInstance(InstanceContext instanceContext, Message message)
{
if (instanceContext == null)
{
throw new ArgumentNullException(nameof(instanceContext));
}
var serviceScopeExtensions = new ServiceScopeExtension(serviceProvider);
instanceContext.Extensions.Add(serviceScopeExtensions);
try
{
return(serviceFactory(serviceScopeExtensions.ScopedServiceProvider));
}
catch (Exception)
{
serviceScopeExtensions.Dispose();
instanceContext.Extensions.Remove(serviceScopeExtensions);
throw;
}
}
