Import of https://github.com/ciena/voltctl at commit 40d61fbf3f910ed4017cf67c9c79e8e1f82a33a5
Change-Id: I8464c59e60d76cb8612891db3303878975b5416c
diff --git a/vendor/k8s.io/client-go/rest/transport.go b/vendor/k8s.io/client-go/rest/transport.go
new file mode 100644
index 0000000..bd5749d
--- /dev/null
+++ b/vendor/k8s.io/client-go/rest/transport.go
@@ -0,0 +1,117 @@
+/*
+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 (
+ "crypto/tls"
+ "errors"
+ "net/http"
+
+ "k8s.io/client-go/plugin/pkg/client/auth/exec"
+ "k8s.io/client-go/transport"
+)
+
+// TLSConfigFor returns a tls.Config that will provide the transport level security defined
+// by the provided Config. Will return nil if no transport level security is requested.
+func TLSConfigFor(config *Config) (*tls.Config, error) {
+ cfg, err := config.TransportConfig()
+ if err != nil {
+ return nil, err
+ }
+ return transport.TLSConfigFor(cfg)
+}
+
+// TransportFor returns an http.RoundTripper that will provide the authentication
+// or transport level security defined by the provided Config. Will return the
+// default http.DefaultTransport if no special case behavior is needed.
+func TransportFor(config *Config) (http.RoundTripper, error) {
+ cfg, err := config.TransportConfig()
+ if err != nil {
+ return nil, err
+ }
+ return transport.New(cfg)
+}
+
+// HTTPWrappersForConfig wraps a round tripper with any relevant layered behavior from the
+// config. Exposed to allow more clients that need HTTP-like behavior but then must hijack
+// the underlying connection (like WebSocket or HTTP2 clients). Pure HTTP clients should use
+// the higher level TransportFor or RESTClientFor methods.
+func HTTPWrappersForConfig(config *Config, rt http.RoundTripper) (http.RoundTripper, error) {
+ cfg, err := config.TransportConfig()
+ if err != nil {
+ return nil, err
+ }
+ return transport.HTTPWrappersForConfig(cfg, rt)
+}
+
+// TransportConfig converts a client config to an appropriate transport config.
+func (c *Config) TransportConfig() (*transport.Config, error) {
+ conf := &transport.Config{
+ UserAgent: c.UserAgent,
+ Transport: c.Transport,
+ WrapTransport: c.WrapTransport,
+ TLS: transport.TLSConfig{
+ Insecure: c.Insecure,
+ ServerName: c.ServerName,
+ CAFile: c.CAFile,
+ CAData: c.CAData,
+ CertFile: c.CertFile,
+ CertData: c.CertData,
+ KeyFile: c.KeyFile,
+ KeyData: c.KeyData,
+ },
+ Username: c.Username,
+ Password: c.Password,
+ BearerToken: c.BearerToken,
+ Impersonate: transport.ImpersonationConfig{
+ UserName: c.Impersonate.UserName,
+ Groups: c.Impersonate.Groups,
+ Extra: c.Impersonate.Extra,
+ },
+ Dial: c.Dial,
+ }
+
+ if c.ExecProvider != nil && c.AuthProvider != nil {
+ return nil, errors.New("execProvider and authProvider cannot be used in combination")
+ }
+
+ if c.ExecProvider != nil {
+ provider, err := exec.GetAuthenticator(c.ExecProvider)
+ if err != nil {
+ return nil, err
+ }
+ if err := provider.UpdateTransportConfig(conf); err != nil {
+ return nil, err
+ }
+ }
+ if c.AuthProvider != nil {
+ provider, err := GetAuthProvider(c.Host, c.AuthProvider, c.AuthConfigPersister)
+ if err != nil {
+ return nil, err
+ }
+ conf.Wrap(provider.WrapTransport)
+ }
+ return conf, nil
+}
+
+// Wrap adds a transport middleware function that will give the caller
+// an opportunity to wrap the underlying http.RoundTripper prior to the
+// first API call being made. The provided function is invoked after any
+// existing transport wrappers are invoked.
+func (c *Config) Wrap(fn transport.WrapperFunc) {
+ c.WrapTransport = transport.Wrappers(c.WrapTransport, fn)
+}