Remove src and dest version - they are not used (now)

We will probably readd these as an opaque object passed down to
conversions that lets the caller get access to more info (like
a negotiated serializer).

pkg/conversion/converter.go

@@ -210,9 +210,6 @@ func (c ConversionFuncs) Merge(other ConversionFuncs) ConversionFuncs {
 
 // Meta is supplied by Scheme, when it calls Convert.
 type Meta struct {
-	SrcVersion  string
-	DestVersion string
-
 	// KeyNameMapping is an optional function which may map the listed key (field name)
 	// into a source and destination value.
 	KeyNameMapping FieldMappingFunc

pkg/conversion/converter_test.go

@@ -611,7 +611,7 @@ func TestConverter_meta(t *testing.T) {
 	checks := 0
 	err := c.RegisterConversionFunc(
 		func(in *Foo, out *Bar, s Scope) error {
-			if s.Meta() == nil || s.Meta().SrcVersion != "test" || s.Meta().DestVersion != "passes" {
+			if s.Meta() == nil {
 				t.Errorf("Meta did not get passed!")
 			}
 			checks++
@@ -624,7 +624,7 @@ func TestConverter_meta(t *testing.T) {
 	}
 	err = c.RegisterConversionFunc(
 		func(in *string, out *string, s Scope) error {
-			if s.Meta() == nil || s.Meta().SrcVersion != "test" || s.Meta().DestVersion != "passes" {
+			if s.Meta() == nil {
 				t.Errorf("Meta did not get passed a second time!")
 			}
 			checks++
@@ -634,7 +634,7 @@ func TestConverter_meta(t *testing.T) {
 	if err != nil {
 		t.Fatalf("Unexpected error: %v", err)
 	}
-	err = c.Convert(&Foo{}, &Bar{}, 0, &Meta{SrcVersion: "test", DestVersion: "passes"})
+	err = c.Convert(&Foo{}, &Bar{}, 0, &Meta{})
 	if err != nil {
 		t.Fatalf("Unexpected error: %v", err)
 	}

pkg/conversion/deep_copy_generated.go

@@ -174,8 +174,6 @@ func DeepCopy_conversion_Equalities(in Equalities, out *Equalities, c *Cloner) e
 }
 
 func DeepCopy_conversion_Meta(in Meta, out *Meta, c *Cloner) error {
-	out.SrcVersion = in.SrcVersion
-	out.DestVersion = in.DestVersion
 	if in.KeyNameMapping == nil {
 		out.KeyNameMapping = nil
 	} else if newVal, err := c.DeepCopy(in.KeyNameMapping); err != nil {

pkg/runtime/scheme.go

@@ -124,11 +124,8 @@ func (s *Scheme) nameFunc(t reflect.Type) string {
 
 // fromScope gets the input version, desired output version, and desired Scheme
 // from a conversion.Scope.
-func (s *Scheme) fromScope(scope conversion.Scope) (inVersion, outVersion string, scheme *Scheme) {
-	scheme = s
-	inVersion = scope.Meta().SrcVersion
-	outVersion = scope.Meta().DestVersion
-	return inVersion, outVersion, scheme
+func (s *Scheme) fromScope(scope conversion.Scope) *Scheme {
+	return s
 }
 
 // Converter allows access to the converter for the scheme
@@ -532,10 +529,7 @@ func (s *Scheme) ConvertToVersion(in Object, outVersion string) (Object, error)
 
 // generateConvertMeta constructs the meta value we pass to Convert.
 func (s *Scheme) generateConvertMeta(srcGroupVersion, destGroupVersion unversioned.GroupVersion, in interface{}) (conversion.FieldMatchingFlags, *conversion.Meta) {
-	flags, meta := s.converter.DefaultMeta(reflect.TypeOf(in))
-	meta.SrcVersion = srcGroupVersion.String()
-	meta.DestVersion = destGroupVersion.String()
-	return flags, meta
+	return s.converter.DefaultMeta(reflect.TypeOf(in))
 }
 
 func setTargetVersion(obj Object, raw *Scheme, gv unversioned.GroupVersion) {

pkg/runtime/scheme_test.go

@@ -570,24 +570,12 @@ func TestMetaValues(t *testing.T) {
 	err := s.AddConversionFuncs(
 		func(in *InternalSimple, out *ExternalSimple, scope conversion.Scope) error {
 			t.Logf("internal -> external")
-			if e, a := internalGV.String(), scope.Meta().SrcVersion; e != a {
-				t.Fatalf("Expected '%v', got '%v'", e, a)
-			}
-			if e, a := externalGV.String(), scope.Meta().DestVersion; e != a {
-				t.Fatalf("Expected '%v', got '%v'", e, a)
-			}
 			scope.Convert(&in.TestString, &out.TestString, 0)
 			internalToExternalCalls++
 			return nil
 		},
 		func(in *ExternalSimple, out *InternalSimple, scope conversion.Scope) error {
 			t.Logf("external -> internal")
-			if e, a := externalGV.String(), scope.Meta().SrcVersion; e != a {
-				t.Errorf("Expected '%v', got '%v'", e, a)
-			}
-			if e, a := internalGV.String(), scope.Meta().DestVersion; e != a {
-				t.Fatalf("Expected '%v', got '%v'", e, a)
-			}
 			scope.Convert(&in.TestString, &out.TestString, 0)
 			externalToInternalCalls++
 			return nil
@@ -643,12 +631,6 @@ func TestMetaValuesUnregisteredConvert(t *testing.T) {
 	// Register functions to verify that scope.Meta() gets set correctly.
 	err := s.AddConversionFuncs(
 		func(in *InternalSimple, out *ExternalSimple, scope conversion.Scope) error {
-			if e, a := "unknown/unknown", scope.Meta().SrcVersion; e != a {
-				t.Fatalf("Expected '%v', got '%v'", e, a)
-			}
-			if e, a := "unknown/unknown", scope.Meta().DestVersion; e != a {
-				t.Fatalf("Expected '%v', got '%v'", e, a)
-			}
 			scope.Convert(&in.TestString, &out.TestString, 0)
 			internalToExternalCalls++
 			return nil