update vendor

Signed-off-by: Roland.Ma <rolandma@yunify.com>

vendor/k8s.io/cli-runtime/pkg/genericclioptions/command_headers.go

@@ -0,0 +1,79 @@
+/*
+Copyright 2021 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 genericclioptions
+
+import (
+	"net/http"
+	"strings"
+
+	"github.com/google/uuid"
+	"github.com/spf13/cobra"
+)
+
+const (
+	kubectlCommandHeader = "X-Kubectl-Command"
+	kubectlSessionHeader = "X-Kubectl-Session"
+)
+
+// CommandHeaderRoundTripper adds a layer around the standard
+// round tripper to add Request headers before delegation. Implements
+// the go standard library "http.RoundTripper" interface.
+type CommandHeaderRoundTripper struct {
+	Delegate http.RoundTripper
+	Headers  map[string]string
+}
+
+// CommandHeaderRoundTripper adds Request headers before delegating to standard
+// round tripper. These headers are kubectl command headers which
+// detail the kubectl command. See SIG CLI KEP 859:
+//   https://github.com/kubernetes/enhancements/tree/master/keps/sig-cli/859-kubectl-headers
+func (c *CommandHeaderRoundTripper) RoundTrip(req *http.Request) (*http.Response, error) {
+	for header, value := range c.Headers {
+		req.Header.Set(header, value)
+	}
+	return c.Delegate.RoundTrip(req)
+}
+
+// ParseCommandHeaders fills in a map of X-Headers into the CommandHeaderRoundTripper. These
+// headers are then filled into each request. For details on X-Headers see:
+//   https://github.com/kubernetes/enhancements/tree/master/keps/sig-cli/859-kubectl-headers
+// Each call overwrites the previously parsed command headers (not additive).
+// TODO(seans3): Parse/add flags removing PII from flag values.
+func (c *CommandHeaderRoundTripper) ParseCommandHeaders(cmd *cobra.Command, args []string) {
+	if cmd == nil {
+		return
+	}
+	// Overwrites previously parsed command headers (headers not additive).
+	c.Headers = map[string]string{}
+	// Session identifier to aggregate multiple Requests from single kubectl command.
+	uid := uuid.New().String()
+	c.Headers[kubectlSessionHeader] = uid
+	// Iterate up the hierarchy of commands from the leaf command to create
+	// the full command string. Example: kubectl create secret generic
+	cmdStrs := []string{}
+	for cmd.HasParent() {
+		parent := cmd.Parent()
+		currName := strings.TrimSpace(cmd.Name())
+		cmdStrs = append([]string{currName}, cmdStrs...)
+		cmd = parent
+	}
+	currName := strings.TrimSpace(cmd.Name())
+	cmdStrs = append([]string{currName}, cmdStrs...)
+	if len(cmdStrs) > 0 {
+		c.Headers[kubectlCommandHeader] = strings.Join(cmdStrs, " ")
+	}
+}