// SwaggerSchema retrieves and parses the swagger API schema the server supports.
func (d *DiscoveryClient) SwaggerSchema(version unversioned.GroupVersion) (*swagger.ApiDeclaration, error) {
if version.Empty() {
return nil, fmt.Errorf("groupVersion cannot be empty")
}
groupList, err := d.ServerGroups()
if err != nil {
return nil, err
}
groupVersions := unversioned.ExtractGroupVersions(groupList)
// This check also takes care the case that kubectl is newer than the running endpoint
if stringDoesntExistIn(version.String(), groupVersions) {
return nil, fmt.Errorf("API version: %v is not supported by the server. Use one of: %v", version, groupVersions)
}
var path string
if len(d.LegacyPrefix) > 0 && version == v1.SchemeGroupVersion {
path = "/swaggerapi" + d.LegacyPrefix + "/" + version.Version
} else {
path = "/swaggerapi/apis/" + version.Group + "/" + version.Version
}
body, err := d.Get().AbsPath(path).Do().Raw()
if err != nil {
return nil, err
}
var schema swagger.ApiDeclaration
err = json.Unmarshal(body, &schema)
if err != nil {
return nil, fmt.Errorf("got '%s': %v", string(body), err)
}
return &schema, nil
}
func TestGetServerGroupsWithV1Server(t *testing.T) {
server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
var obj interface{}
switch req.URL.Path {
case "/api":
obj = &unversioned.APIVersions{
Versions: []string{
"v1",
},
}
default:
w.WriteHeader(http.StatusNotFound)
return
}
output, err := json.Marshal(obj)
if err != nil {
t.Fatalf("unexpected encoding error: %v", err)
return
}
w.Header().Set("Content-Type", "application/json")
w.WriteHeader(http.StatusOK)
w.Write(output)
}))
defer server.Close()
client := NewDiscoveryClientForConfigOrDie(&rest.Config{Host: server.URL})
// ServerGroups should not return an error even if server returns error at /api and /apis
apiGroupList, err := client.ServerGroups()
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
groupVersions := unversioned.ExtractGroupVersions(apiGroupList)
if !reflect.DeepEqual(groupVersions, []string{"v1"}) {
t.Errorf("expected: %q, got: %q", []string{"v1"}, groupVersions)
}
}
// ServerResources returns the supported resources for all groups and versions.
func (d *DiscoveryClient) ServerResources() (map[string]*unversioned.APIResourceList, error) {
apiGroups, err := d.ServerGroups()
if err != nil {
return nil, err
}
groupVersions := unversioned.ExtractGroupVersions(apiGroups)
result := map[string]*unversioned.APIResourceList{}
for _, groupVersion := range groupVersions {
resources, err := d.ServerResourcesForGroupVersion(groupVersion)
if err != nil {
return nil, err
}
result[groupVersion] = resources
}
return result, nil
}
func TestGetServerGroupsWithBrokenServer(t *testing.T) {
for _, statusCode := range []int{http.StatusNotFound, http.StatusForbidden} {
server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
w.WriteHeader(statusCode)
}))
defer server.Close()
client := NewDiscoveryClientForConfigOrDie(&rest.Config{Host: server.URL})
// ServerGroups should not return an error even if server returns Not Found or Forbidden error at all end points
apiGroupList, err := client.ServerGroups()
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
groupVersions := unversioned.ExtractGroupVersions(apiGroupList)
if len(groupVersions) != 0 {
t.Errorf("expected empty list, got: %q", groupVersions)
}
}
}