Import of https://github.com/ciena/voltctl at commit 40d61fbf3f910ed4017cf67c9c79e8e1f82a33a5
Change-Id: I8464c59e60d76cb8612891db3303878975b5416c
diff --git a/vendor/k8s.io/client-go/rest/url_utils.go b/vendor/k8s.io/client-go/rest/url_utils.go
new file mode 100644
index 0000000..a56d183
--- /dev/null
+++ b/vendor/k8s.io/client-go/rest/url_utils.go
@@ -0,0 +1,97 @@
+/*
+Copyright 2016 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 (
+ "fmt"
+ "net/url"
+ "path"
+
+ "k8s.io/apimachinery/pkg/runtime/schema"
+)
+
+// DefaultServerURL converts a host, host:port, or URL string to the default base server API path
+// to use with a Client at a given API version following the standard conventions for a
+// Kubernetes API.
+func DefaultServerURL(host, apiPath string, groupVersion schema.GroupVersion, defaultTLS bool) (*url.URL, string, error) {
+ if host == "" {
+ return nil, "", fmt.Errorf("host must be a URL or a host:port pair")
+ }
+ base := host
+ hostURL, err := url.Parse(base)
+ if err != nil || hostURL.Scheme == "" || hostURL.Host == "" {
+ scheme := "http://"
+ if defaultTLS {
+ scheme = "https://"
+ }
+ hostURL, err = url.Parse(scheme + base)
+ if err != nil {
+ return nil, "", err
+ }
+ if hostURL.Path != "" && hostURL.Path != "/" {
+ return nil, "", fmt.Errorf("host must be a URL or a host:port pair: %q", base)
+ }
+ }
+
+ // hostURL.Path is optional; a non-empty Path is treated as a prefix that is to be applied to
+ // all URIs used to access the host. this is useful when there's a proxy in front of the
+ // apiserver that has relocated the apiserver endpoints, forwarding all requests from, for
+ // example, /a/b/c to the apiserver. in this case the Path should be /a/b/c.
+ //
+ // if running without a frontend proxy (that changes the location of the apiserver), then
+ // hostURL.Path should be blank.
+ //
+ // versionedAPIPath, a path relative to baseURL.Path, points to a versioned API base
+ versionedAPIPath := DefaultVersionedAPIPath(apiPath, groupVersion)
+
+ return hostURL, versionedAPIPath, nil
+}
+
+// DefaultVersionedAPIPathFor constructs the default path for the given group version, assuming the given
+// API path, following the standard conventions of the Kubernetes API.
+func DefaultVersionedAPIPath(apiPath string, groupVersion schema.GroupVersion) string {
+ versionedAPIPath := path.Join("/", apiPath)
+
+ // Add the version to the end of the path
+ if len(groupVersion.Group) > 0 {
+ versionedAPIPath = path.Join(versionedAPIPath, groupVersion.Group, groupVersion.Version)
+
+ } else {
+ versionedAPIPath = path.Join(versionedAPIPath, groupVersion.Version)
+ }
+
+ return versionedAPIPath
+}
+
+// defaultServerUrlFor is shared between IsConfigTransportTLS and RESTClientFor. It
+// requires Host and Version to be set prior to being called.
+func defaultServerUrlFor(config *Config) (*url.URL, string, error) {
+ // TODO: move the default to secure when the apiserver supports TLS by default
+ // config.Insecure is taken to mean "I want HTTPS but don't bother checking the certs against a CA."
+ hasCA := len(config.CAFile) != 0 || len(config.CAData) != 0
+ hasCert := len(config.CertFile) != 0 || len(config.CertData) != 0
+ defaultTLS := hasCA || hasCert || config.Insecure
+ host := config.Host
+ if host == "" {
+ host = "localhost"
+ }
+
+ if config.GroupVersion != nil {
+ return DefaultServerURL(host, config.APIPath, *config.GroupVersion, defaultTLS)
+ }
+ return DefaultServerURL(host, config.APIPath, schema.GroupVersion{}, defaultTLS)
+}