snapshot of https://github.com/ThreeDotsLabs/watermill.git (master, 2026-09-15; blobs > 131072B omitted)

dev/update-examples-deps/main.go

@@ -0,0 +1,174 @@
+package main
+
+import (
+	"fmt"
+	"io"
+	"net/http"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"regexp"
+	"strings"
+	"sync"
+)
+
+var latestGoVersion string
+
+func main() {
+	latestGoVersion = getLatestGoVersionFromWebsite()
+
+	const workers = 5
+
+	wg := sync.WaitGroup{}
+	wg.Add(workers)
+
+	files := make(chan string)
+
+	for i := 0; i < workers; i++ {
+		go func() {
+			for file := range files {
+				dir := filepath.Dir(file)
+				if dir == "." {
+					continue
+				}
+
+				fmt.Println("update of", file, "@", dir)
+
+				if err := replaceGoInDockerCompose(dir); err != nil {
+					panic(err)
+				}
+
+				if err := updateDeps(dir, file); err != nil {
+					panic(err)
+				}
+
+				if err := updateWatermill(dir, file); err != nil {
+					panic(fmt.Sprintf("failed to update %s: %s", file, err))
+				}
+
+				if err := goModTidy(dir, file); err != nil {
+					panic(err)
+				}
+			}
+
+			wg.Done()
+		}()
+	}
+
+	for _, file := range getGomods() {
+		files <- file
+	}
+	close(files)
+
+	wg.Wait()
+}
+
+func getGomods() []string {
+	var fileList []string
+
+	err := filepath.Walk(".", func(path string, f os.FileInfo, err error) error {
+		if strings.Contains(path, "go.mod") {
+			fileList = append(fileList, path)
+		}
+		return nil
+	})
+
+	if err != nil {
+		panic(err)
+	}
+
+	return fileList
+}
+
+func getLatestGoVersionFromWebsite() string {
+	resp, err := http.Get("https://go.dev/VERSION?m=text")
+	if err != nil {
+		panic(err)
+	}
+	defer resp.Body.Close()
+
+	out, err := io.ReadAll(resp.Body)
+	if err != nil {
+		panic(err)
+	}
+
+	version := strings.Split(string(out), "\n")[0]
+	version = strings.TrimPrefix(version, "go")
+
+	// we only want the major.minor version
+	version = strings.Split(version, ".")[0] + "." + strings.Split(version, ".")[1]
+
+	return version
+}
+
+func goModTidy(dir string, file string) error {
+	cmd := []string{"go", "mod", "tidy", "-go=" + latestGoVersion}
+
+	fmt.Println("\nrunning", cmd, "in", dir)
+
+	cmd2 := exec.Command(cmd[0], cmd[1:]...)
+	cmd2.Dir = dir
+	cmd2.Stderr = os.Stderr
+	cmd2.Stdout = os.Stdout
+
+	return cmd2.Run()
+}
+
+// replaceGoInDockerCompose replaces the go version in the Dockerfile
+// using Go (not sed)
+func replaceGoInDockerCompose(dir string) error {
+	dockerComposeFile := filepath.Join(dir, "docker-compose.yml")
+
+	b, err := os.ReadFile(dockerComposeFile)
+	// return if not exist
+	if os.IsNotExist(err) {
+		return nil
+	}
+
+	if err != nil {
+		return err
+	}
+
+	pattern := `golang:1\.[0-9]+(?:\.[0-9]+)?`
+	re, err := regexp.Compile(pattern)
+	if err != nil {
+		return fmt.Errorf("failed to compile regex: %w", err)
+	}
+
+	newContent := re.ReplaceAllString(string(b), "golang:"+latestGoVersion)
+
+	err = os.WriteFile(dockerComposeFile, []byte(newContent), 0644)
+	if err != nil {
+		return fmt.Errorf("failed to write updated docker-compose.yml: %w", err)
+	}
+
+	return nil
+}
+
+func updateWatermill(dir string, file string) error {
+	c := []string{"go", "get", "-u", "github.com/ThreeDotsLabs/watermill@latest"}
+
+	fmt.Println("\nrunning", c, "in", dir)
+
+	cmd := exec.Command(c[0], c[1:]...)
+	cmd.Dir = dir
+	cmd.Stderr = os.Stderr
+	cmd.Stdout = os.Stdout
+	err := cmd.Run()
+
+	return err
+}
+
+func updateDeps(dir string, file string) error {
+	c := []string{"go", "get", "-u", "./..."}
+
+	fmt.Println("\nrunning", c, "in", dir)
+
+	cmd := exec.Command(c[0], c[1:]...)
+	cmd.Dir = dir
+	cmd.Stderr = os.Stderr
+	cmd.Stdout = os.Stdout
+	err := cmd.Run()
+
+	return err
+}