Hello world

cmd/lazysecrets/update.go

@@ -0,0 +1,80 @@
+package main
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"strings"
+	"time"
+
+	"git.kebcloud.no/keb/lazysecrets/internal/config"
+	"git.kebcloud.no/keb/lazysecrets/internal/ui/app"
+	"git.kebcloud.no/keb/lazysecrets/internal/update"
+)
+
+// updater is the app's way to find and install releases, replacing the
+// binary that's running, from the servers (config releases) or the
+// default ones.
+func updater(servers []string) *app.Updater {
+	c := &update.Client{Servers: servers}
+	return &app.Updater{
+		Latest: c.Latest,
+		Install: func(ctx context.Context, r update.Release) error {
+			exe, err := update.Executable()
+			if err != nil {
+				return err
+			}
+			return c.Install(ctx, r, exe)
+		},
+	}
+}
+
+// updateCmd is lazysecrets update [--check]: the newer release's
+// changelog, then (unless --check) install it.
+func updateCmd(configPath string, args []string) error {
+	check := len(args) == 1 && args[0] == "--check"
+	if len(args) > 0 && !check {
+		return errors.New("usage: lazysecrets update [--check]")
+	}
+	cfg, err := config.LoadAll(strings.Split(configPath, ","))
+	if err != nil {
+		return err
+	}
+	current := versionString()
+	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Minute)
+	defer cancel()
+	c := &update.Client{Servers: cfg.Releases}
+	r, err := c.Latest(ctx)
+	if err != nil {
+		return fmt.Errorf("looking for a newer lazysecrets: %w", err)
+	}
+	if !update.Newer(current, r.Tag) {
+		if !update.Newer(current, "v999.0.0") {
+			return fmt.Errorf("this is a development build (%s); the latest release is %s: install it with install.sh, or go install …@%s", current, r.Tag, r.Tag)
+		}
+		fmt.Printf("lazysecrets %s is the latest (%s)\n", current, r.Tag)
+		return nil
+	}
+	fmt.Printf("lazysecrets %s is out (you have %s):\n\n%s\n\n", r.Tag, current, indent(r.Notes()))
+	if check {
+		fmt.Println("lazysecrets update installs it.")
+		return nil
+	}
+	exe, err := update.Executable()
+	if err != nil {
+		return err
+	}
+	fmt.Printf("Updating %s…\n", exe)
+	if err := c.Install(ctx, r, exe); err != nil {
+		return err
+	}
+	fmt.Printf("Updated to %s.\n", r.Tag)
+	return nil
+}
+
+func indent(s string) string {
+	if s == "" {
+		return "  (no changelog)"
+	}
+	return "  " + strings.ReplaceAll(s, "\n", "\n  ")
+}