func (m *DefaultRESTMapper) KindFor(resource unversioned.GroupVersionResource) (unversioned.GroupVersionKind, error) {
kinds, err := m.KindsFor(resource)
if err != nil {
return unversioned.GroupVersionKind{}, err
}
// TODO for each group, choose the most preferred (first) version. This keeps us consistent with code today.
// eventually, we'll need a RESTMapper that is aware of what's available server-side and deconflicts that with
// user preferences
oneKindPerGroup := []unversioned.GroupVersionKind{}
groupsAdded := sets.String{}
for _, kind := range kinds {
if groupsAdded.Has(kind.Group) {
continue
}
oneKindPerGroup = append(oneKindPerGroup, kind)
groupsAdded.Insert(kind.Group)
}
if len(oneKindPerGroup) == 1 {
return oneKindPerGroup[0], nil
}
return unversioned.GroupVersionKind{}, fmt.Errorf("%v is ambiguous, got: %v", resource, kinds)
}
func (r *Requirement) Values() sets.String {
ret := sets.String{}
for k := range r.strValues {
ret.Insert(k)
}
return ret
}
// Index returns a list of items that match on the index function
// Index is thread-safe so long as you treat all items as immutable
func (c *threadSafeMap) Index(indexName string, obj interface{}) ([]interface{}, error) {
c.lock.RLock()
defer c.lock.RUnlock()
indexFunc := c.indexers[indexName]
if indexFunc == nil {
return nil, fmt.Errorf("Index with name %s does not exist", indexName)
}
indexKeys, err := indexFunc(obj)
if err != nil {
return nil, err
}
index := c.indices[indexName]
// need to de-dupe the return list. Since multiple keys are allowed, this can happen.
returnKeySet := sets.String{}
for _, indexKey := range indexKeys {
set := index[indexKey]
for _, key := range set.List() {
returnKeySet.Insert(key)
}
}
list := make([]interface{}, 0, returnKeySet.Len())
for absoluteKey := range returnKeySet {
list = append(list, c.items[absoluteKey])
}
return list, nil
}
// Test public interface
func doTestIndex(t *testing.T, indexer Indexer) {
mkObj := func(id string, val string) testStoreObject {
return testStoreObject{id: id, val: val}
}
// Test Index
expected := map[string]sets.String{}
expected["b"] = sets.NewString("a", "c")
expected["f"] = sets.NewString("e")
expected["h"] = sets.NewString("g")
indexer.Add(mkObj("a", "b"))
indexer.Add(mkObj("c", "b"))
indexer.Add(mkObj("e", "f"))
indexer.Add(mkObj("g", "h"))
{
for k, v := range expected {
found := sets.String{}
indexResults, err := indexer.Index("by_val", mkObj("", k))
if err != nil {
t.Errorf("Unexpected error %v", err)
}
for _, item := range indexResults {
found.Insert(item.(testStoreObject).id)
}
items := v.List()
if !found.HasAll(items...) {
t.Errorf("missing items, index %s, expected %v but found %v", k, items, found.List())
}
}
}
}
func ValidateThirdPartyResource(obj *extensions.ThirdPartyResource) field.ErrorList {
allErrs := field.ErrorList{}
allErrs = append(allErrs, apivalidation.ValidateObjectMeta(&obj.ObjectMeta, true, ValidateThirdPartyResourceName, field.NewPath("metadata"))...)
versions := sets.String{}
for ix := range obj.Versions {
version := &obj.Versions[ix]
if len(version.Name) == 0 {
allErrs = append(allErrs, field.Invalid(field.NewPath("versions").Index(ix).Child("name"), version, "must not be empty"))
}
if versions.Has(version.Name) {
allErrs = append(allErrs, field.Duplicate(field.NewPath("versions").Index(ix).Child("name"), version))
}
versions.Insert(version.Name)
}
return allErrs
}
// Test public interface
func doTestStore(t *testing.T, store Store) {
mkObj := func(id string, val string) testStoreObject {
return testStoreObject{id: id, val: val}
}
store.Add(mkObj("foo", "bar"))
if item, ok, _ := store.Get(mkObj("foo", "")); !ok {
t.Errorf("didn't find inserted item")
} else {
if e, a := "bar", item.(testStoreObject).val; e != a {
t.Errorf("expected %v, got %v", e, a)
}
}
store.Update(mkObj("foo", "baz"))
if item, ok, _ := store.Get(mkObj("foo", "")); !ok {
t.Errorf("didn't find inserted item")
} else {
if e, a := "baz", item.(testStoreObject).val; e != a {
t.Errorf("expected %v, got %v", e, a)
}
}
store.Delete(mkObj("foo", ""))
if _, ok, _ := store.Get(mkObj("foo", "")); ok {
t.Errorf("found deleted item??")
}
// Test List.
store.Add(mkObj("a", "b"))
store.Add(mkObj("c", "d"))
store.Add(mkObj("e", "e"))
{
found := sets.String{}
for _, item := range store.List() {
found.Insert(item.(testStoreObject).val)
}
if !found.HasAll("b", "d", "e") {
t.Errorf("missing items, found: %v", found)
}
if len(found) != 3 {
t.Errorf("extra items")
}
}
// Test Replace.
store.Replace([]interface{}{
mkObj("foo", "foo"),
mkObj("bar", "bar"),
}, "0")
{
found := sets.String{}
for _, item := range store.List() {
found.Insert(item.(testStoreObject).val)
}
if !found.HasAll("foo", "bar") {
t.Errorf("missing items")
}
if len(found) != 2 {
t.Errorf("extra items")
}
}
}
// NegotiateVersion queries the server's supported api versions to find
// a version that both client and server support.
// - If no version is provided, try registered client versions in order of
// preference.
// - If version is provided, but not default config (explicitly requested via
// commandline flag), and is unsupported by the server, print a warning to
// stderr and try client's registered versions in order of preference.
// - If version is config default, and the server does not support it,
// return an error.
func NegotiateVersion(client *Client, c *Config, requestedGV *unversioned.GroupVersion, clientRegisteredGVs []unversioned.GroupVersion) (*unversioned.GroupVersion, error) {
var err error
if client == nil {
client, err = New(c)
if err != nil {
return nil, err
}
}
clientVersions := sets.String{}
for _, gv := range clientRegisteredGVs {
clientVersions.Insert(gv.String())
}
groups, err := client.ServerGroups()
if err != nil {
// This is almost always a connection error, and higher level code should treat this as a generic error,
// not a negotiation specific error.
return nil, err
}
versions := ExtractGroupVersions(groups)
serverVersions := sets.String{}
for _, v := range versions {
serverVersions.Insert(v)
}
// If no version requested, use config version (may also be empty).
// make a copy of the original so we don't risk mutating input here or in the returned value
var preferredGV *unversioned.GroupVersion
switch {
case requestedGV != nil:
t := *requestedGV
preferredGV = &t
case c.GroupVersion != nil:
t := *c.GroupVersion
preferredGV = &t
}
// If version explicitly requested verify that both client and server support it.
// If server does not support warn, but try to negotiate a lower version.
if preferredGV != nil {
if !clientVersions.Has(preferredGV.String()) {
return nil, fmt.Errorf("client does not support API version %q; client supported API versions: %v", preferredGV, clientVersions)
}
if serverVersions.Has(preferredGV.String()) {
return preferredGV, nil
}
// If we are using an explicit config version the server does not support, fail.
if (c.GroupVersion != nil) && (*preferredGV == *c.GroupVersion) {
return nil, fmt.Errorf("server does not support API version %q", preferredGV)
}
}
for _, clientGV := range clientRegisteredGVs {
if serverVersions.Has(clientGV.String()) {
// Version was not explicitly requested in command config (--api-version).
// Ok to fall back to a supported version with a warning.
// TODO: caesarxuchao: enable the warning message when we have
// proper fix. Please refer to issue #14895.
// if len(version) != 0 {
// glog.Warningf("Server does not support API version '%s'. Falling back to '%s'.", version, clientVersion)
// }
t := clientGV
return &t, nil
}
}
return nil, fmt.Errorf("failed to negotiate an api version; server supports: %v, client supports: %v",
serverVersions, clientVersions)
}