112 lines
3.5 KiB
Go
112 lines
3.5 KiB
Go
package kube
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import (
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"errors"
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"fmt"
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"io"
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"os"
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"github.com/containers/common/pkg/completion"
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"github.com/containers/podman/v5/cmd/podman/common"
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"github.com/containers/podman/v5/cmd/podman/registry"
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"github.com/containers/podman/v5/cmd/podman/utils"
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"github.com/containers/podman/v5/pkg/domain/entities"
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"github.com/spf13/cobra"
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)
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var (
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applyOptions = entities.ApplyOptions{}
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applyDescription = `Command applies a podman container, pod, volume, or kube yaml to a Kubernetes cluster when a kubeconfig file is given.`
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applyCmd = &cobra.Command{
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Use: "apply [options] [CONTAINER...|POD...|VOLUME...]",
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Short: "Deploy a podman container, pod, volume, or Kubernetes yaml to a Kubernetes cluster",
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Long: applyDescription,
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RunE: apply,
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ValidArgsFunction: common.AutocompleteForKube,
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Example: `podman kube apply ctrName volName
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podman kube apply --namespace project -f fileName`,
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}
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)
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func init() {
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registry.Commands = append(registry.Commands, registry.CliCommand{
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Command: applyCmd,
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Parent: kubeCmd,
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})
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applyFlags(applyCmd)
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}
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func applyFlags(cmd *cobra.Command) {
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flags := cmd.Flags()
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flags.SetNormalizeFunc(utils.AliasFlags)
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kubeconfigFlagName := "kubeconfig"
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flags.StringVarP(&applyOptions.Kubeconfig, kubeconfigFlagName, "k", os.Getenv("KUBECONFIG"), "Path to the kubeconfig file for the Kubernetes cluster")
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_ = cmd.RegisterFlagCompletionFunc(kubeconfigFlagName, completion.AutocompleteDefault)
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namespaceFlagName := "ns"
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flags.StringVarP(&applyOptions.Namespace, namespaceFlagName, "", "", "The namespace to deploy the workload to on the Kubernetes cluster")
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_ = cmd.RegisterFlagCompletionFunc(namespaceFlagName, completion.AutocompleteNone)
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caCertFileFlagName := "ca-cert-file"
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flags.StringVarP(&applyOptions.CACertFile, caCertFileFlagName, "", "", "Path to the CA cert file for the Kubernetes cluster.")
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_ = cmd.RegisterFlagCompletionFunc(caCertFileFlagName, completion.AutocompleteDefault)
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fileFlagName := "file"
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flags.StringVarP(&applyOptions.File, fileFlagName, "f", "", "Path to the Kubernetes yaml file to deploy.")
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_ = cmd.RegisterFlagCompletionFunc(fileFlagName, completion.AutocompleteDefault)
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serviceFlagName := "service"
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flags.BoolVarP(&applyOptions.Service, serviceFlagName, "s", false, "Create a service object for the container being deployed.")
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}
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func apply(cmd *cobra.Command, args []string) error {
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if cmd.Flags().Changed("file") && cmd.Flags().Changed("service") {
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return errors.New("cannot set --service and --file at the same time")
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}
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kubeconfig, err := cmd.Flags().GetString("kubeconfig")
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if err != nil {
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return err
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}
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if kubeconfig == "" {
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return errors.New("kubeconfig not given, unable to connect to cluster")
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}
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var reader io.Reader
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if cmd.Flags().Changed("file") {
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yamlFile := applyOptions.File
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if yamlFile == "-" {
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yamlFile = os.Stdin.Name()
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}
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f, err := os.Open(yamlFile)
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if err != nil {
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return err
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}
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defer f.Close()
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reader = f
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} else {
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generateOptions.Service = applyOptions.Service
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report, err := registry.ContainerEngine().GenerateKube(registry.GetContext(), args, generateOptions)
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if err != nil {
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return err
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}
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if r, ok := report.Reader.(io.ReadCloser); ok {
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defer r.Close()
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}
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reader = report.Reader
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}
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fmt.Println("Deploying to cluster...")
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if err = registry.ContainerEngine().KubeApply(registry.GetContext(), reader, applyOptions); err != nil {
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return err
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}
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fmt.Println("Successfully deployed workloads to cluster!")
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return nil
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}
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