fix: ignore server managed fields for SSA matching

closes: operator-framework#2290

Signed-off-by: Steven Hawkins <[email protected]>

Author: shawkins

operator-framework-core/src/main/java/io/javaoperatorsdk/operator/processing/dependent/kubernetes/SSABasedGenericKubernetesResourceMatcher.java

@@ -41,6 +41,9 @@ public class SSABasedGenericKubernetesResourceMatcher<R extends HasMetadata> {
   public static final String APPLY_OPERATION = "Apply";
   public static final String DOT_KEY = ".";
 
+  private static final List<String> IGNORED_METADATA = Arrays.asList("creationTimestamp", "deletionTimestamp", "generation",
+      "selfLink", "uid");
+
   @SuppressWarnings("unchecked")
   public static <L extends HasMetadata> SSABasedGenericKubernetesResourceMatcher<L> getInstance() {
     return INSTANCE;
@@ -131,6 +134,7 @@ private static void removeIrrelevantValues(Map<String, Object> desiredMap) {
     var metadata = (Map<String, Object>) desiredMap.get(METADATA_KEY);
     metadata.remove(NAME_KEY);
     metadata.remove(NAMESPACE_KEY);
+    IGNORED_METADATA.forEach(metadata::remove);
     if (metadata.isEmpty()) {
       desiredMap.remove(METADATA_KEY);
     }

operator-framework-core/src/test/resources/io/javaoperatorsdk/operator/processing/dependent/kubernetes/deployment-with-managed-fields-additional-controller.yaml

@@ -4,7 +4,7 @@ metadata:
   annotations:
     deployment.kubernetes.io/revision: "1"
   creationTimestamp: "2023-06-01T08:43:47Z"
-  generation: 1
+  generation: 2
   managedFields:
     - apiVersion: apps/v1
       fieldsType: FieldsV1

operator-framework-core/src/test/resources/io/javaoperatorsdk/operator/processing/dependent/kubernetes/nginx-deployment.yaml

@@ -2,6 +2,7 @@ apiVersion: apps/v1 # for versions before 1.9.0 use apps/v1beta2
 kind: Deployment
 metadata:
   name: "test"
+  generation: 1
 spec:
   progressDeadlineSeconds: 600
   revisionHistoryLimit: 10