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convert multiple return values into a struct, add SelfLinker

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This commit is contained in:
Daniel Smith
2014-09-25 15:08:09 -07:00
parent 75b93cf7e9
commit b972f72248
4 changed files with 31 additions and 11 deletions
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30
pkg/api/latest/latest.go
View File

@@ -49,16 +49,36 @@ var Codec = v1beta1.Codec
// TODO: when versioning changes, make this part of each API definition.
var ResourceVersioner = runtime.NewJSONBaseResourceVersioner()
// SelfLinker can set or get the SelfLink field of all API types.
// TODO: when versioning changes, make this part of each API definition.
// TODO(lavalamp): Combine SelfLinker & ResourceVersioner interfaces, force all uses
// to go through the InterfacesFor method below.
var SelfLinker = runtime.NewJSONBaseSelfLinker()
// VersionInterfaces contains the interfaces one should use for dealing with types of a particular version.
type VersionInterfaces struct {
runtime.Codec
runtime.ResourceVersioner
runtime.SelfLinker
}
// InterfacesFor returns the default Codec and ResourceVersioner for a given version
// string, or an error if the version is not known.
func InterfacesFor(version string) (codec runtime.Codec, versioner runtime.ResourceVersioner, err error) {
func InterfacesFor(version string) (*VersionInterfaces, error) {
switch version {
case "v1beta1":
codec, versioner = v1beta1.Codec, ResourceVersioner
return &VersionInterfaces{
Codec: v1beta1.Codec,
ResourceVersioner: ResourceVersioner,
SelfLinker: SelfLinker,
}, nil
case "v1beta2":
codec, versioner = v1beta2.Codec, ResourceVersioner
return &VersionInterfaces{
Codec: v1beta2.Codec,
ResourceVersioner: ResourceVersioner,
SelfLinker: SelfLinker,
}, nil
default:
err = fmt.Errorf("unsupported storage version: %s (valid: %s)", version, strings.Join(Versions, ", "))
return nil, fmt.Errorf("unsupported storage version: %s (valid: %s)", version, strings.Join(Versions, ", "))
}
return
}

4
pkg/api/latest/latest_test.go
View File

@@ -146,11 +146,11 @@ func TestCodec(t *testing.T) {
}
func TestInterfacesFor(t *testing.T) {
if _, _, err := InterfacesFor(""); err == nil {
if _, err := InterfacesFor(""); err == nil {
t.Fatalf("unexpected non-error: %v", err)
}
for i, version := range append([]string{Version, OldestVersion}, Versions...) {
if codec, versioner, err := InterfacesFor(version); err != nil || codec == nil || versioner == nil {
if vi, err := InterfacesFor(version); err != nil || vi == nil {
t.Fatalf("%d: unexpected result: %v", i, err)
}
}