add selfupdate (#51)

* add selfupdate

* Bump golang 1.23 sub version

* Remove systemd restart from autoupdate

* we don't need os exec anymore

* cleanup

* Simplify version logic

* Update: Checksum verification successful message

.github/workflows/push.yaml

@@ -16,7 +16,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-22.04]
-        go: ["1.22.7", "1.23.1"]
+        go: ["1.22.7", "1.23.3"]
         goos: [linux]
         goarch: [amd64, arm64]
 

cmd/root.go

@@ -88,6 +88,7 @@ func init() {
 	rootCommand.AddCommand(versionCommand)
 	rootCommand.AddCommand(configureCmd)
 	rootCommand.AddCommand(newDiagnosticsCommand())
+	rootCommand.AddCommand(newSelfupdateCommand())
 }
 
 func isDockerSnap() bool {

cmd/selfupdate.go

@@ -0,0 +1,249 @@
+package cmd
+
+import (
+	"crypto/sha256"
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"os"
+	"path/filepath"
+	"runtime"
+	"strings"
+	"time"
+
+	"github.com/pelican-dev/wings/system"
+	"github.com/spf13/cobra"
+)
+
+var updateArgs struct {
+	repoOwner string
+	repoName  string
+	force     bool
+}
+
+func newSelfupdateCommand() *cobra.Command {
+	command := &cobra.Command{
+		Use:   "update",
+		Short: "Update wings to the latest version",
+		Run:   selfupdateCmdRun,
+	}
+
+	command.Flags().StringVar(&updateArgs.repoOwner, "repo-owner", "pelican-dev", "GitHub repository owner")
+	command.Flags().StringVar(&updateArgs.repoName, "repo-name", "wings", "GitHub repository name")
+	command.Flags().BoolVar(&updateArgs.force, "force", false, "Force update even if on latest version")
+
+	return command
+}
+
+func selfupdateCmdRun(_ *cobra.Command, _ []string) {
+	currentVersion := system.Version
+	if currentVersion == "" {
+		fmt.Println("Error: current version is not defined")
+		return
+	}
+
+	if currentVersion == "develop" && !updateArgs.force {
+		fmt.Println("Running in development mode. Use --force to override.")
+		return
+	}
+
+	fmt.Printf("Current version: %s\n", currentVersion)
+
+	// Fetch the latest release tag from GitHub API
+	latestVersionTag, err := fetchLatestGitHubRelease()
+	if err != nil {
+		fmt.Printf("Failed to fetch latest version: %v\n", err)
+		return
+	}
+
+	currentVersionTag := "v" + currentVersion
+	if currentVersion == "develop" {
+		currentVersionTag = currentVersion
+	}
+
+	if latestVersionTag == currentVersionTag && !updateArgs.force {
+		fmt.Printf("You are running the latest version: %s\n", currentVersion)
+		return
+	}
+
+	binaryName := determineBinaryName()
+	if binaryName == "" {
+		fmt.Printf("Error: unsupported architecture: %s\n", runtime.GOARCH)
+		return
+	}
+
+	fmt.Printf("Updating from %s to %s\n", currentVersionTag, latestVersionTag)
+
+	if err := performUpdate(latestVersionTag, binaryName); err != nil {
+		fmt.Printf("Update failed: %v\n", err)
+		return
+	}
+
+	fmt.Println("\nUpdate successful! Please restart the wings service (e.g., systemctl restart wings)")
+}
+
+func performUpdate(version, binaryName string) error {
+	downloadURL := fmt.Sprintf("https://github.com/%s/%s/releases/download/%s/%s",
+		updateArgs.repoOwner, updateArgs.repoName, version, binaryName)
+	checksumURL := fmt.Sprintf("https://github.com/%s/%s/releases/download/%s/checksums.txt",
+		updateArgs.repoOwner, updateArgs.repoName, version)
+
+	tmpDir, err := os.MkdirTemp("", "wings-update-*")
+	if err != nil {
+		return fmt.Errorf("failed to create temp directory: %v", err)
+	}
+	defer os.RemoveAll(tmpDir)
+
+	checksumPath := filepath.Join(tmpDir, "checksums.txt")
+	if err := downloadWithProgress(checksumURL, checksumPath); err != nil {
+		return fmt.Errorf("failed to download checksums: %v", err)
+	}
+
+	binaryPath := filepath.Join(tmpDir, binaryName)
+	if err := downloadWithProgress(downloadURL, binaryPath); err != nil {
+		return fmt.Errorf("failed to download binary: %v", err)
+	}
+
+	if err := verifyChecksum(binaryPath, checksumPath, binaryName); err != nil {
+		return fmt.Errorf("checksum verification failed: %v", err)
+	}
+
+	if err := os.Chmod(binaryPath, 0755); err != nil {
+		return fmt.Errorf("failed to set executable permissions: %v", err)
+	}
+
+	currentExecutable, err := os.Executable()
+	if err != nil {
+		return fmt.Errorf("failed to locate current executable: %v", err)
+	}
+
+	return os.Rename(binaryPath, currentExecutable)
+}
+
+func downloadWithProgress(url, dest string) error {
+	resp, err := http.Get(url)
+	if err != nil {
+		return err
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusOK {
+		return fmt.Errorf("unexpected status: %s", resp.Status)
+	}
+
+	out, err := os.Create(dest)
+	if err != nil {
+		return err
+	}
+	defer out.Close()
+
+	filename := filepath.Base(dest)
+	fmt.Printf("Downloading %s (%.2f MB)...\n", filename, float64(resp.ContentLength)/1024/1024)
+
+	pw := &progressWriter{
+		Writer:    out,
+		Total:     resp.ContentLength,
+		StartTime: time.Now(),
+	}
+
+	_, err = io.Copy(pw, resp.Body)
+	fmt.Println()
+	return err
+}
+
+func fetchLatestGitHubRelease() (string, error) {
+	apiURL := fmt.Sprintf("https://api.github.com/repos/%s/%s/releases/latest", updateArgs.repoOwner, updateArgs.repoName)
+
+	resp, err := http.Get(apiURL)
+	if err != nil {
+		return "", err
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusOK {
+		return "", fmt.Errorf("unexpected status code: %d", resp.StatusCode)
+	}
+
+	var releaseData struct {
+		TagName string `json:"tag_name"`
+	}
+	if err := json.NewDecoder(resp.Body).Decode(&releaseData); err != nil {
+		return "", err
+	}
+
+	return releaseData.TagName, nil
+}
+
+func determineBinaryName() string {
+	switch runtime.GOARCH {
+	case "amd64":
+		return "wings_linux_amd64"
+	case "arm64":
+		return "wings_linux_arm64"
+	default:
+		return ""
+	}
+}
+
+func verifyChecksum(binaryPath, checksumPath, binaryName string) error {
+	checksumData, err := os.ReadFile(checksumPath)
+	if err != nil {
+		return err
+	}
+
+	var expectedChecksum string
+	for _, line := range strings.Split(string(checksumData), "\n") {
+		if strings.HasSuffix(line, binaryName) {
+			parts := strings.Fields(line)
+			if len(parts) > 0 {
+				expectedChecksum = parts[0]
+			}
+			break
+		}
+	}
+	if expectedChecksum == "" {
+		return fmt.Errorf("checksum not found for %s", binaryName)
+	}
+
+	file, err := os.Open(binaryPath)
+	if err != nil {
+		return err
+	}
+	defer file.Close()
+
+	hasher := sha256.New()
+	if _, err := io.Copy(hasher, file); err != nil {
+		return err
+	}
+	actualChecksum := fmt.Sprintf("%x", hasher.Sum(nil))
+
+	if actualChecksum == expectedChecksum {
+		fmt.Printf("Checksum verification successful!\n")
+	}
+
+	if actualChecksum != expectedChecksum {
+		return fmt.Errorf("checksum mismatch: expected %s, got %s", expectedChecksum, actualChecksum)
+	}
+
+	return nil
+}
+
+type progressWriter struct {
+	io.Writer
+	Total     int64
+	Written   int64
+	StartTime time.Time
+}
+
+func (pw *progressWriter) Write(p []byte) (int, error) {
+	n, err := pw.Writer.Write(p)
+	pw.Written += int64(n)
+
+	if pw.Total > 0 {
+		percent := float64(pw.Written) / float64(pw.Total) * 100
+		fmt.Printf("\rProgress: %.2f%%", percent)
+	}
+
+	return n, err
+}