ae989d7722
Add support for --container flag, which sets an explicit container name for exec operations. Defaults to `controller`. Signed-off-by: Jacob Henner <code@ventricle.us>
88 lines
2.5 KiB
Go
88 lines
2.5 KiB
Go
/*
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Copyright 2019 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package backends
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import (
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"fmt"
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"github.com/spf13/cobra"
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"k8s.io/cli-runtime/pkg/genericclioptions"
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"k8s.io/ingress-nginx/cmd/plugin/kubectl"
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"k8s.io/ingress-nginx/cmd/plugin/request"
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"k8s.io/ingress-nginx/cmd/plugin/util"
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)
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// CreateCommand creates and returns this cobra subcommand
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func CreateCommand(flags *genericclioptions.ConfigFlags) *cobra.Command {
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var pod, deployment, selector, container *string
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cmd := &cobra.Command{
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Use: "backends",
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Short: "Inspect the dynamic backend information of an ingress-nginx instance",
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RunE: func(cmd *cobra.Command, args []string) error {
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backend, err := cmd.Flags().GetString("backend")
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if err != nil {
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return err
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}
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onlyList, err := cmd.Flags().GetBool("list")
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if err != nil {
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return err
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}
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if onlyList && backend != "" {
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return fmt.Errorf("--list and --backend cannot both be specified")
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}
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util.PrintError(backends(flags, *pod, *deployment, *selector, *container, backend, onlyList))
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return nil
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},
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}
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pod = util.AddPodFlag(cmd)
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deployment = util.AddDeploymentFlag(cmd)
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selector = util.AddSelectorFlag(cmd)
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container = util.AddContainerFlag(cmd)
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cmd.Flags().String("backend", "", "Output only the information for the given backend")
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cmd.Flags().Bool("list", false, "Output a newline-separated list of backend names")
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return cmd
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}
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func backends(flags *genericclioptions.ConfigFlags, podName string, deployment string, selector string, container string, backend string, onlyList bool) error {
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var command []string
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if onlyList {
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command = []string{"/dbg", "backends", "list"}
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} else if backend != "" {
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command = []string{"/dbg", "backends", "get", backend}
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} else {
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command = []string{"/dbg", "backends", "all"}
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}
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pod, err := request.ChoosePod(flags, podName, deployment, selector)
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if err != nil {
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return err
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}
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out, err := kubectl.PodExecString(flags, &pod, container, command)
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if err != nil {
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return err
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}
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fmt.Print(out)
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return nil
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}
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