CreateNamespacedCustomObjectAsync unusable with AOT

[IvanJosipovic]

Describe the bug
When using the Aot NuGet Package, we're unable to use CreateNamespacedCustomObjectAsync as we're not able to pass a custom JsonTypeInfo object.

System.AggregateException : One or more errors occurred. (Value cannot be null. (Parameter 'jsonTypeInfo'))
---- System.ArgumentNullException : Value cannot be null. (Parameter 'jsonTypeInfo')
   at System.Threading.Tasks.Task.Wait()
   at MyClass..ctor(Object, Span`1)
   at System.Reflection.RuntimeConstructorInfo.Invoke(BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
----- Inner Stack Trace -----
   at System.ArgumentNullException.Throw(String paramName)
   at System.ArgumentNullException.ThrowIfNull(Object argument, String paramName)
   at System.Text.Json.JsonSerializer.Serialize(Object value, JsonTypeInfo jsonTypeInfo)
   at k8s.KubernetesJson.Serialize(Object value, JsonSerializerOptions jsonSerializerOptions)
   at k8s.Kubernetes.SendRequest[T](String relativeUri, HttpMethod method, IReadOnlyDictionary`2 customHeaders, T body, CancellationToken cancellationToken)
   at k8s.AbstractKubernetes.ICustomObjectsOperations_CreateNamespacedCustomObjectWithHttpMessagesAsync[T](Object body, String group, String version, String namespaceParameter, String plural, String dryRun, String fieldManager, String fieldValidation, Nullable`1 pretty, IReadOnlyDictionary`2 customHeaders, CancellationToken cancellationToken)
   at k8s.AbstractKubernetes.k8s.ICustomObjectsOperations.CreateNamespacedCustomObjectWithHttpMessagesAsync(Object body, String group, String version, String namespaceParameter, String plural, String dryRun, String fieldManager, String fieldValidation, Nullable`1 pretty, IReadOnlyDictionary`2 customHeaders, CancellationToken cancellationToken)
   at k8s.CustomObjectsOperationsExtensions.CreateNamespacedCustomObjectAsync(ICustomObjectsOperations operations, Object body, String group, String version, String namespaceParameter, String plural, String dryRun, String fieldManager, String fieldValidation, Nullable`1 pretty, CancellationToken cancellationToken)

Kubernetes C# SDK Client Version
KubernetesClient.Aot 17.0.14

To Reproduce
Use CreateNamespacedCustomObjectAsync with the KubernetesClient.Aot library loaded.

Expected behavior
CreateNamespacedCustomObjectAsync should allow us to pass a custom JsonSerializerOptions or JsonTypeInfo.

[tg123]

hmmm
sorry this is not yet supported :(
customobject is somewhat dynamic

[IvanJosipovic]

With #1677 we can now create our own JsonSerializerContext which allows us to use custom Kubernetes objects in AOT.

using k8s.Models;
using System.Text.Json.Serialization;
using static k8s.KubernetesJson;

namespace ConsoleApp1;

[JsonSerializable(typeof(MyCRD))]
[JsonSourceGenerationOptions(
    DefaultIgnoreCondition = JsonIgnoreCondition.WhenWritingNull,
    PropertyNamingPolicy = JsonKnownNamingPolicy.CamelCase,
    UseStringEnumConverter = true,
    Converters = new[] { typeof(Iso8601TimeSpanConverter), typeof(KubernetesDateTimeConverter), typeof(KubernetesDateTimeOffsetConverter), typeof(V1Status.V1StatusObjectViewConverter) })
]
public partial class MyCRDSourceGenerationContext : JsonSerializerContext
{
}

KubernetesJson.AddJsonOptions(x =>
{
    x.TypeInfoResolver = JsonTypeInfoResolver.Combine(SourceGenerationContext.Default, MyCRDSourceGenerationContext.Default);
});