Add an error when apiVersion is missing

The apiVersion field is generally required by kubernetes objects... it's
surprising that this situation wasn't already caught by an error when
decoding or getting a mapping.

Refs:
 - https://issues.redhat.com/browse/ACM-7127

Signed-off-by: Justin Kulikauskas <jkulikau@redhat.com>

controllers/configurationpolicy_controller.go

@@ -1849,6 +1849,20 @@ func (r *ConfigurationPolicyReconciler) getMapping(
 		return nil, result
 	}
 
+	if gvk.Group == "" && gvk.Version == "" {
+		err := fmt.Errorf("object template at index [%v] in policy `%v` missing apiVersion", index, policy.Name)
+
+		log.Error(err, "Can not get mapping for object")
+
+		result = &objectTmplEvalResult{
+			events: []objectTmplEvalEvent{
+				{compliant: false, reason: "K8s object definition error", message: err.Error()},
+			},
+		}
+
+		return nil, result
+	}
+
 	// initializes a mapping between Kind and APIVersion to a resource name
 	r.lock.RLock()
 	mapper := restmapper.NewDiscoveryRESTMapper(r.apiGroups)

test/e2e/case34_enforce_w_status_test.go

@@ -61,6 +61,24 @@ var _ = Describe("Test compliance events of enforced policies that define a stat
 	})
 
 	AfterAll(func() {
+		if CurrentSpecReport().Failed() {
+			By("Test failed, getting relevant compliance events for debugging")
+			events := utils.GetMatchingEvents(clientManaged, testNamespace,
+				policyName, cfgPlcName, ".*", defaultTimeoutSeconds)
+
+			for _, ev := range events {
+				GinkgoWriter.Println("---")
+				GinkgoWriter.Println("Name:", ev.Name)
+				GinkgoWriter.Println("Reason:", ev.Reason)
+				GinkgoWriter.Println("Message:", ev.Message)
+				GinkgoWriter.Println("FirstTimestamp:", ev.FirstTimestamp)
+				GinkgoWriter.Println("LastTimestamp:", ev.LastTimestamp)
+				GinkgoWriter.Println("Count:", ev.Count)
+				GinkgoWriter.Println("Type:", ev.Type)
+				GinkgoWriter.Println("---")
+			}
+		}
+
 		utils.Kubectl("delete", "policy", policyName, "-n", "managed", "--ignore-not-found")
 		configPlc := utils.GetWithTimeout(clientManagedDynamic, gvrConfigPolicy,
 			cfgPlcName, "managed", false, defaultTimeoutSeconds,

test/e2e/case35_no_apiversion_test.go

@@ -0,0 +1,48 @@
+// Copyright (c) 2023 Red Hat, Inc.
+// Copyright Contributors to the Open Cluster Management project
+
+package e2e
+
+import (
+	. "github.com/onsi/ginkgo/v2"
+	. "github.com/onsi/gomega"
+
+	"open-cluster-management.io/config-policy-controller/test/utils"
+)
+
+var _ = Describe("Test a policy with an objectDefinition that is missing apiVersion", Ordered, func() {
+	const (
+		rsrcPath   = "../resources/case35_no_apiversion/"
+		policyYAML = rsrcPath + "policy.yaml"
+		policyName = "case35-parent"
+		cfgPlcYAML = rsrcPath + "config-policy.yaml"
+		cfgPlcName = "case35-cfgpol"
+	)
+
+	It("Should have the expected events", func() {
+		By("Setting up the policy")
+		createConfigPolicyWithParent(policyYAML, policyName, cfgPlcYAML)
+
+		By("Checking there is a NonCompliant event on the policy")
+		Eventually(func() interface{} {
+			return utils.GetMatchingEvents(clientManaged, testNamespace,
+				policyName, cfgPlcName, "^NonCompliant;.*missing apiVersion", defaultTimeoutSeconds)
+		}, defaultTimeoutSeconds, 5).ShouldNot(BeEmpty())
+
+		By("Checking there are no Compliant events on the policy")
+		Consistently(func() interface{} {
+			return utils.GetMatchingEvents(clientManaged, testNamespace,
+				policyName, cfgPlcName, "^Compliant;", defaultTimeoutSeconds)
+		}, defaultTimeoutSeconds, 5).Should(BeEmpty())
+	})
+
+	AfterAll(func() {
+		utils.Kubectl("delete", "policy", policyName, "-n", "managed", "--ignore-not-found")
+		configPlc := utils.GetWithTimeout(clientManagedDynamic, gvrConfigPolicy,
+			cfgPlcName, "managed", false, defaultTimeoutSeconds,
+		)
+		Expect(configPlc).To(BeNil())
+		utils.Kubectl("delete", "event", "--field-selector=involvedObject.name="+policyName, "-n", "managed")
+		utils.Kubectl("delete", "event", "--field-selector=involvedObject.name="+cfgPlcName, "-n", "managed")
+	})
+})

test/resources/case35_no_apiversion/config-policy.yaml

@@ -0,0 +1,23 @@
+apiVersion: policy.open-cluster-management.io/v1
+kind: ConfigurationPolicy
+metadata:
+  name: case35-cfgpol
+  ownerReferences:
+  - apiVersion: policy.open-cluster-management.io/v1
+    blockOwnerDeletion: false
+    controller: true
+    kind: Policy
+    name: case35-parent
+    uid: 08bae967-4262-498a-84e9-d1f0e321b41e # to be replaced!
+spec:
+  remediationAction: enforce
+  severity: low
+  object-templates:
+    - complianceType: musthave
+      objectDefinition:
+        kind: ConfigMap
+        metadata:
+          name: case35-cfgmap
+          namespace: default
+        data:
+          foo: bar

test/resources/case35_no_apiversion/policy.yaml

@@ -0,0 +1,24 @@
+apiVersion: policy.open-cluster-management.io/v1
+kind: Policy
+metadata:
+  name: case35-parent
+spec:
+  disabled: false
+  remediationAction: enforce
+  policy-templates:
+    - objectDefinition:
+        apiVersion: policy.open-cluster-management.io/v1
+        kind: ConfigurationPolicy
+        metadata:
+          name: case35-cfgpol
+        spec:
+          remediationAction: enforce
+          object-templates:
+            - complianceType: musthave
+              objectDefinition:
+                kind: ConfigMap
+                metadata:
+                  name: case35-cfgmap
+                  namespace: default
+                data:
+                  foo: bar