fix(cache): Don't compare ManagedFields (introduced in 1.18)

This fixes #76.

It should be noted, that in future maybe this field needs to be
checked again since it is used for server-side-apply of kubectl.

Author: Christoph Bühler

src/KubeOps/Operator/Caching/ResourceCache.cs

@@ -13,6 +13,7 @@ internal class ResourceCache<TEntity> : IResourceCache<TEntity>
         where TEntity : IKubernetesObject<V1ObjectMeta>
     {
         private const string ResourceVersion = "ResourceVersion";
+        private const string ManagedFields = "ManagedFields";
         private const string Finalizers = "Metadata.Finalizers";
         private const string Status = "Status";
 
@@ -21,7 +22,7 @@ internal class ResourceCache<TEntity> : IResourceCache<TEntity>
             {
                 Caching = true,
                 AutoClearCache = false,
-                MembersToIgnore = new List<string> { ResourceVersion },
+                MembersToIgnore = new List<string> { ResourceVersion, ManagedFields },
             });
 
         private readonly IDictionary<string, TEntity> _cache = new ConcurrentDictionary<string, TEntity>();
@@ -91,8 +92,6 @@ private CacheComparisonResult CompareCache(TEntity resource)
 
         private bool Exists(TEntity resource) => _cache.ContainsKey(resource.Metadata.Uid);
 
-        private bool Exists(string id) => _cache.ContainsKey(id);
-
         private void Remove(string resourceUid)
         {
             _cache.Remove(resourceUid);

tests/KubeOps.TestOperator/Entities/V1TestEntity.cs

@@ -1,6 +1,5 @@
 using k8s.Models;
 using KubeOps.Operator.Entities;
-using KubeOps.Operator.Entities.Annotations;
 
 namespace KubeOps.TestOperator.Entities
 {
@@ -17,7 +16,7 @@ public class V1TestEntityStatus
         public string Status { get; set; } = string.Empty;
     }
 
-    [KubernetesEntity(Group = "testing.dev", ApiVersion = "v1", Kind = "testentity", PluralName = "testentities")]
+    [KubernetesEntity(Group = "testing.dev", ApiVersion = "v1", Kind = "TestEntity")]
     public class V1TestEntity : CustomKubernetesEntity<V1TestEntitySpec, V1TestEntityStatus>
     {
     }

tests/KubeOps.TestOperator/Entities/V2TestEntity.cs

@@ -20,7 +20,7 @@ public class V2TestEntityStatus
         public string Status { get; set; } = string.Empty;
     }
 
-    [KubernetesEntity(Group = "testing.dev", ApiVersion = "v2", Kind = "testentity", PluralName = "testentities")]
+    [KubernetesEntity(Group = "testing.dev", ApiVersion = "v2", Kind = "TestEntity")]
     public class V2TestEntity : CustomKubernetesEntity<V2TestEntitySpec, V2TestEntityStatus>
     {
     }