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[release/6.0] Additional statistics when a ServiceProvider is created #58030

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Merged
ericstj merged 1 commit into from
Aug 24, 2021
Merged

[release/6.0] Additional statistics when a ServiceProvider is created #58030

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20 changes: 17 additions & 3 deletions src/libraries/Microsoft.Extensions.DependencyInjection/src/DependencyInjectionEventSource.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -79,9 +79,9 @@ public void ServiceRealizationFailed(string? exceptionMessage, int serviceProvid
[UnconditionalSuppressMessage("ReflectionAnalysis", "IL2026:RequiresUnreferencedCode",
Justification = "Parameters to this method are primitive and are trimmer safe.")]
[Event(7, Level = EventLevel.Informational, Keywords = Keywords.ServiceProviderInitialized)]
private void ServiceProviderBuilt(int serviceProviderHashCode, int singletonServices, int scopedServices, int transientServices)
private void ServiceProviderBuilt(int serviceProviderHashCode, int singletonServices, int scopedServices, int transientServices, int closedGenericsServices, int openGenericsServices)
{
WriteEvent(7, serviceProviderHashCode, singletonServices, scopedServices, transientServices);
WriteEvent(7, serviceProviderHashCode, singletonServices, scopedServices, transientServices, closedGenericsServices, openGenericsServices);
}

[UnconditionalSuppressMessage("ReflectionAnalysis", "IL2026:RequiresUnreferencedCode",
Expand Down Expand Up @@ -174,6 +174,8 @@ private void WriteServiceProviderBuilt(ServiceProvider provider)
int singletonServices = 0;
int scopedServices = 0;
int transientServices = 0;
int closedGenericsServices = 0;
int openGenericsServices = 0;

StringBuilder descriptorBuilder = new StringBuilder("{ \"descriptors\":[ ");
bool firstDescriptor = true;
Expand Down Expand Up @@ -202,11 +204,23 @@ private void WriteServiceProviderBuilt(ServiceProvider provider)
transientServices++;
break;
}

if (descriptor.ServiceType.IsGenericType)
{
if (descriptor.ServiceType.IsConstructedGenericType)
{
closedGenericsServices++;
}
else
{
openGenericsServices++;
}
}
}
descriptorBuilder.Append(" ] }");

int providerHashCode = provider.GetHashCode();
ServiceProviderBuilt(providerHashCode, singletonServices, scopedServices, transientServices);
ServiceProviderBuilt(providerHashCode, singletonServices, scopedServices, transientServices, closedGenericsServices, openGenericsServices);

string descriptorString = descriptorBuilder.ToString();
int chunkCount = descriptorString.Length / MaxChunkSize + (descriptorString.Length % MaxChunkSize > 0 ? 1 : 0);
Expand Down
18 changes: 16 additions & 2 deletions ...soft.Extensions.DependencyInjection/tests/DI.Tests/DependencyInjectionEventSourceTests.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -241,14 +241,18 @@ public void EmitsServiceProviderBuilt()
serviceCollection.AddScoped<IFakeMultipleService, FakeDisposableCallbackInnerService>();
serviceCollection.AddTransient<IFakeMultipleService, FakeDisposableCallbackInnerService>();
serviceCollection.AddSingleton<IFakeService, FakeDisposableCallbackInnerService>();
serviceCollection.AddScoped(typeof(IFakeOpenGenericService<>), typeof(FakeOpenGenericService<>));
serviceCollection.AddTransient<IFakeOpenGenericService<PocoClass>, FakeOpenGenericService<PocoClass>>();

using ServiceProvider provider = serviceCollection.BuildServiceProvider();

EventWrittenEventArgs serviceProviderBuiltEvent = _listener.EventData.Single(e => e.EventName == "ServiceProviderBuilt");
GetProperty<int>(serviceProviderBuiltEvent, "serviceProviderHashCode"); // assert hashcode exists as an int
Assert.Equal(4, GetProperty<int>(serviceProviderBuiltEvent, "singletonServices"));
Assert.Equal(1, GetProperty<int>(serviceProviderBuiltEvent, "scopedServices"));
Assert.Equal(2, GetProperty<int>(serviceProviderBuiltEvent, "transientServices"));
Assert.Equal(2, GetProperty<int>(serviceProviderBuiltEvent, "scopedServices"));
Assert.Equal(3, GetProperty<int>(serviceProviderBuiltEvent, "transientServices"));
Assert.Equal(1, GetProperty<int>(serviceProviderBuiltEvent, "closedGenericsServices"));
Assert.Equal(1, GetProperty<int>(serviceProviderBuiltEvent, "openGenericsServices"));
Assert.Equal(7, serviceProviderBuiltEvent.EventId);

EventWrittenEventArgs serviceProviderDescriptorsEvent = _listener.EventData.Single(e => e.EventName == "ServiceProviderDescriptors");
Expand Down Expand Up @@ -290,6 +294,16 @@ public void EmitsServiceProviderBuilt()
" \"serviceType\": \"Microsoft.Extensions.DependencyInjection.Specification.Fakes.IFakeService\",",
" \"lifetime\": \"Singleton\",",
" \"implementationType\": \"Microsoft.Extensions.DependencyInjection.Specification.Fakes.FakeDisposableCallbackInnerService\"",
" },",
" {",
" \"serviceType\": \"Microsoft.Extensions.DependencyInjection.Specification.Fakes.IFakeOpenGenericService`1[TValue]\",",
" \"lifetime\": \"Scoped\",",
" \"implementationType\": \"Microsoft.Extensions.DependencyInjection.Specification.Fakes.FakeOpenGenericService`1[TVal]\"",
" },",
" {",
" \"serviceType\": \"Microsoft.Extensions.DependencyInjection.Specification.Fakes.IFakeOpenGenericService`1[Microsoft.Extensions.DependencyInjection.Specification.Fakes.PocoClass]\",",
" \"lifetime\": \"Transient\",",
" \"implementationType\": \"Microsoft.Extensions.DependencyInjection.Specification.Fakes.FakeOpenGenericService`1[Microsoft.Extensions.DependencyInjection.Specification.Fakes.PocoClass]\"",
" }",
" ]",
"}"),
Expand Down