1 files changed, 88 insertions, 0 deletions
diff --git a/vendor/k8s.io/client-go/rest/versions.go b/vendor/k8s.io/client-go/rest/versions.go
new file mode 100644
index 000000000..9d41812f2
--- /dev/null
+++ b/vendor/k8s.io/client-go/rest/versions.go
@@ -0,0 +1,88 @@
+/*
+Copyright 2014 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package rest
+
+import (
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"path"
+
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+)
+
+const (
+	legacyAPIPath  = "/api"
+	defaultAPIPath = "/apis"
+)
+
+// TODO: Is this obsoleted by the discovery client?
+
+// ServerAPIVersions returns the GroupVersions supported by the API server.
+// It creates a RESTClient based on the passed in config, but it doesn't rely
+// on the Version and Codec of the config, because it uses AbsPath and
+// takes the raw response.
+func ServerAPIVersions(c *Config) (groupVersions []string, err error) {
+	transport, err := TransportFor(c)
+	if err != nil {
+		return nil, err
+	}
+	client := http.Client{Transport: transport}
+
+	configCopy := *c
+	configCopy.GroupVersion = nil
+	configCopy.APIPath = ""
+	baseURL, _, err := defaultServerUrlFor(&configCopy)
+	if err != nil {
+		return nil, err
+	}
+	// Get the groupVersions exposed at /api
+	originalPath := baseURL.Path
+	baseURL.Path = path.Join(originalPath, legacyAPIPath)
+	resp, err := client.Get(baseURL.String())
+	if err != nil {
+		return nil, err
+	}
+	var v metav1.APIVersions
+	defer resp.Body.Close()
+	err = json.NewDecoder(resp.Body).Decode(&v)
+	if err != nil {
+		return nil, fmt.Errorf("unexpected error: %v", err)
+	}
+
+	groupVersions = append(groupVersions, v.Versions...)
+	// Get the groupVersions exposed at /apis
+	baseURL.Path = path.Join(originalPath, defaultAPIPath)
+	resp2, err := client.Get(baseURL.String())
+	if err != nil {
+		return nil, err
+	}
+	var apiGroupList metav1.APIGroupList
+	defer resp2.Body.Close()
+	err = json.NewDecoder(resp2.Body).Decode(&apiGroupList)
+	if err != nil {
+		return nil, fmt.Errorf("unexpected error: %v", err)
+	}
+
+	for _, g := range apiGroupList.Groups {
+		for _, gv := range g.Versions {
+			groupVersions = append(groupVersions, gv.GroupVersion)
+		}
+	}
+
+	return groupVersions, nil
+}