mirror of https://github.com/linkerd/linkerd2.git
115 lines
3.1 KiB
Go
115 lines
3.1 KiB
Go
package cmd
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import (
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"context"
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"fmt"
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"io"
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"os"
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"time"
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"github.com/linkerd/linkerd2/pkg/healthcheck"
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"github.com/linkerd/linkerd2/pkg/k8s"
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"github.com/linkerd/linkerd2/pkg/version"
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"github.com/spf13/cobra"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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)
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const defaultVersionString = "unavailable"
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type versionOptions struct {
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shortVersion bool
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onlyClientVersion bool
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proxy bool
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namespace string
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}
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func newVersionOptions() *versionOptions {
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return &versionOptions{
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shortVersion: false,
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onlyClientVersion: false,
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proxy: false,
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namespace: "",
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}
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}
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func newCmdVersion() *cobra.Command {
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options := newVersionOptions()
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cmd := &cobra.Command{
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Use: "version",
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Short: "Print the client and server version information",
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Args: cobra.NoArgs,
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RunE: func(cmd *cobra.Command, args []string) error {
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var k8sAPI *k8s.KubernetesAPI
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var err error
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if !options.onlyClientVersion {
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k8sAPI, err = k8s.NewAPI(kubeconfigPath, kubeContext, impersonate, impersonateGroup, 0)
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if err != nil {
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return err
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}
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}
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configureAndRunVersion(k8sAPI, options, os.Stdout)
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return nil
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},
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}
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cmd.PersistentFlags().BoolVar(&options.shortVersion, "short", options.shortVersion, "Print the version number(s) only, with no additional output")
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cmd.PersistentFlags().BoolVar(&options.onlyClientVersion, "client", options.onlyClientVersion, "Print the client version only")
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cmd.PersistentFlags().BoolVar(&options.proxy, "proxy", options.proxy, "Print data-plane versions")
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cmd.PersistentFlags().StringVarP(&options.namespace, "namespace", "n", options.namespace, "Namespace to use for --proxy versions (default: all namespaces)")
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return cmd
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}
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func configureAndRunVersion(
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k8sAPI *k8s.KubernetesAPI,
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options *versionOptions,
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stdout io.Writer,
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) {
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clientVersion := version.Version
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if options.shortVersion {
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fmt.Fprintln(stdout, clientVersion)
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} else {
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fmt.Fprintf(stdout, "Client version: %s\n", clientVersion)
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}
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if !options.onlyClientVersion {
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ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
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defer cancel()
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serverVersion, err := healthcheck.GetServerVersion(ctx, controlPlaneNamespace, k8sAPI)
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if err != nil {
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serverVersion = defaultVersionString
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}
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if options.shortVersion {
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fmt.Fprintln(stdout, serverVersion)
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} else {
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fmt.Fprintf(stdout, "Server version: %s\n", serverVersion)
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}
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if options.proxy {
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ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
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defer cancel()
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selector := fmt.Sprintf("%s=%s", k8s.ControllerNSLabel, controlPlaneNamespace)
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podList, err := k8sAPI.CoreV1().Pods(options.namespace).List(ctx, metav1.ListOptions{LabelSelector: selector})
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if err != nil {
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fmt.Fprintln(stdout, "Proxy versions: unavailable")
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} else {
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counts := make(map[string]int)
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for _, pod := range podList.Items {
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counts[k8s.GetProxyVersion(pod)]++
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}
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if len(counts) == 0 {
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fmt.Fprintln(stdout, "Proxy versions: unavailable")
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} else {
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fmt.Fprintln(stdout, "Proxy versions:")
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for version, count := range counts {
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fmt.Fprintf(stdout, "\t%s (%d pods)\n", version, count)
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}
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}
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}
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}
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}
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}
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