mirror of https://github.com/linkerd/linkerd2.git
95 lines
2.3 KiB
Go
95 lines
2.3 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/controller/api/public"
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pb "github.com/linkerd/linkerd2/controller/gen/public"
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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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)
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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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}
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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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}
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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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Run: func(cmd *cobra.Command, args []string) {
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configureAndRunVersion(options, os.Stdout, os.Stderr, newVersionClient)
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},
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}
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cmd.Args = cobra.NoArgs
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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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return cmd
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}
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func configureAndRunVersion(
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options *versionOptions,
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stdout io.Writer,
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stderr io.Writer,
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mkClient func() (pb.ApiClient, error),
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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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client, err := mkClient()
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if err != nil {
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fmt.Fprintf(stderr, "Error connecting to server: %s\n", err)
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os.Exit(1)
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}
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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, client)
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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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}
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}
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// This client does not do any validation
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func newVersionClient() (pb.ApiClient, error) {
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if apiAddr != "" {
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return public.NewInternalClient(controlPlaneNamespace, apiAddr)
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}
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kubeAPI, err := k8s.NewAPI(kubeconfigPath, kubeContext)
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if err != nil {
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return nil, err
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}
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return public.NewExternalClient(controlPlaneNamespace, kubeAPI)
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}
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