feat: support skipping api version

Readme.md

@@ -128,7 +128,7 @@ Usage: ./bin/kubeconform [OPTION]... [FILE OR FOLDER]...
   -schema-location value
         override schemas location search path (can be specified multiple times)
   -skip string
-        comma-separated list of kinds or GVKs to ignore
+        comma-separated list of kinds, api versions or GVKs to ignore
   -strict
         disallow additional properties not in schema or duplicated keys
   -summary
@@ -177,7 +177,7 @@ cat fixtures/valid.yaml  | ./bin/kubeconform -summary
 Summary: 1 resource found parsing stdin - Valid: 1, Invalid: 0, Errors: 0 Skipped: 0
 ```
 
-* Validating a file, ignoring its resource using both Kind, and GVK (Group, Version, Kind) notations
+* Validating a file, ignoring its resource using Kind, GVK (Group, Version, Kind), and Version notations
 ```
 # This will ignore ReplicationController for all apiVersions
 $ kubeconform -summary -skip ReplicationController fixtures/valid.yaml
@@ -186,6 +186,10 @@ Summary: 1 resource found in 1 file - Valid: 0, Invalid: 0, Errors: 0, Skipped:
 # This will ignore ReplicationController only for apiVersion v1
 $ kubeconform -summary -skip v1/ReplicationController fixtures/valid.yaml
 Summary: 1 resource found in 1 file - Valid: 0, Invalid: 0, Errors: 0, Skipped: 1
+
+# This will ignore any resource with apiVersion v1
+$ kubeconform -summary -skip v1 fixtures/valid.yaml
+Summary: 1 resource found in 1 file - Valid: 0, Invalid: 0, Errors: 0, Skipped: 1
 ```
 
 * Validating a folder, increasing the number of parallel workers

pkg/validator/validator.go

@@ -59,7 +59,7 @@ type Opts struct {
 	SkipKinds            map[string]struct{} // List of resource Kinds to ignore
 	RejectKinds          map[string]struct{} // List of resource Kinds to reject
 	KubernetesVersion    string              // Kubernetes Version - has to match one in https://github.com/instrumenta/kubernetes-json-schema
-	Strict               bool                // thros an error if resources contain undocumented fields
+	Strict               bool                // throws an error if resources contain undocumented fields
 	IgnoreMissingSchemas bool                // skip a resource if no schema for that resource can be found
 }
 
@@ -115,6 +115,9 @@ func (val *v) ValidateResource(res resource.Resource) Result {
 	// for skipping/rejecting resources) and the raw Kind.
 
 	skip := func(signature resource.Signature) bool {
+		if _, ok := val.opts.SkipKinds[signature.Version]; ok {
+			return ok
+		}
 		if _, ok := val.opts.SkipKinds[signature.GroupVersionKind()]; ok {
 			return ok
 		}

pkg/validator/validator_test.go

@@ -435,3 +435,37 @@ age: not a number
 		t.Errorf("Expected %+v, got %+v", expectedErrors, got.ValidationErrors)
 	}
 }
+
+func TestValidateSkip(t *testing.T) {
+	resource := resource.Resource{Bytes: []byte(`
+apiVersion: random.vendor/v1alpha3
+kind: SomeKind
+firstName: foo
+lastName: bar`)}
+
+	for _, testCase := range []struct {
+		name       string
+		skipOption string
+	}{
+		{"skip kind", "SomeKind"},
+		{"skip version/kind", "random.vendor/v1alpha3/SomeKind"},
+		{"skip apiVersion", "random.vendor/v1alpha3"},
+	} {
+
+		validator := v{
+			opts: Opts{
+				SkipKinds: map[string]struct{}{testCase.skipOption: {}},
+			},
+			schemaDownload: downloadSchema,
+		}
+
+		result := validator.ValidateResource(resource)
+		if result.Status != Skipped {
+			if result.Err != nil {
+				t.Errorf("Test '%s' - expected %d, got %d: %s", testCase.name, Skipped, result.Status, result.Err.Error())
+			} else {
+				t.Errorf("Test '%s' - expected %d, got %d", testCase.name, Skipped, result.Status)
+			}
+		}
+	}
+}