Pass wrapper version as env var in the process runner (#5)

Author: Jackenmen

.gitignore

@@ -4,5 +4,6 @@ dist/
 /.venv
 /redbot-update
 *.exe
+generated_*.go
 **/resources/generated/
 resources_windows.syso

go/build_tools/generate_versioninfo/main.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	"encoding/json"
+	"fmt"
 	"os"
 	"path/filepath"
 	"text/template"
@@ -38,7 +39,8 @@ func main() {
 		panic(err)
 	}
 	generateAppManifestFile(v)
-	generateVersionInfoFile(v)
+	generateVersionInfoJsonFile(v)
+	generateVersionInfoGoFile(v)
 }
 
 // generate app manifest
@@ -59,7 +61,7 @@ func generateAppManifestFile(v PythonProjectVersion) {
 }
 
 // generate versioninfo.json
-func generateVersionInfoFile(v PythonProjectVersion) {
+func generateVersionInfoJsonFile(v PythonProjectVersion) {
 	data, err := os.ReadFile(filepath.Join(baseResourcesDir, "versioninfo.json"))
 	if err != nil {
 		panic(err)
@@ -83,3 +85,15 @@ func generateVersionInfoFile(v PythonProjectVersion) {
 		panic(err)
 	}
 }
+
+func generateVersionInfoGoFile(v PythonProjectVersion) {
+	f, err := os.Create("generated_versioninfo.go")
+	if err != nil {
+		panic(err)
+	}
+	fmt.Fprintf(f, `// Code generated by go/build_tools/generate_versioninfo. DO NOT EDIT.
+package main
+
+const wrapperVersion = %#v
+`, v.String())
+}

go/cmd/redbot-update/main.go

@@ -104,7 +104,7 @@ func main() {
 	logger := slog.New(slog.NewMultiHandler(handlers...))
 	slog.SetDefault(logger)
 
-	slog.Debug("redbot-update wrapper started", "pid", pidLogValue{})
+	slog.Debug("redbot-update wrapper started", "wrapperVersion", wrapperVersion, "pid", pidLogValue{})
 
 	exe, err := osutils.GetExecutableWithPreservedSymlinks(DefaultProgramName)
 	if err != nil {
@@ -163,7 +163,7 @@ func main() {
 		}
 	}
 
-	runner := NewProcessRunner(exe, pythonExe)
+	runner := NewProcessRunner(wrapperVersion, exe, pythonExe)
 	if err := runner.Start(); err != nil {
 		fmt.Printf("Failed to start the process:\n%v\n", err)
 		os.Exit(1)

go/cmd/redbot-update/runner.go

@@ -61,18 +61,20 @@ func (o *SpawnProcessRequestOutput) SetRequestType(v string) {
 }
 
 type ProcessRunner struct {
-	currentCmd *exec.Cmd
-	wrapperExe string
-	runnerDir  string
-	pythonExe  string
-	startArgs  []string
+	currentCmd     *exec.Cmd
+	wrapperVersion string
+	wrapperExe     string
+	runnerDir      string
+	pythonExe      string
+	startArgs      []string
 }
 
-func NewProcessRunner(wrapperExe, pythonExe string) *ProcessRunner {
+func NewProcessRunner(wrapperVersion, wrapperExe, pythonExe string) *ProcessRunner {
 	return &ProcessRunner{
-		wrapperExe: wrapperExe,
-		pythonExe:  pythonExe,
-		startArgs:  append([]string{"-m", "redbot._update"}, os.Args[1:]...),
+		wrapperVersion: wrapperVersion,
+		wrapperExe:     wrapperExe,
+		pythonExe:      pythonExe,
+		startArgs:      append([]string{"-m", "redbot._update"}, os.Args[1:]...),
 	}
 }
 
@@ -228,6 +230,7 @@ func (r *ProcessRunner) Start() error {
 	cmd.Stdout = os.Stdout
 	cmd.Stderr = os.Stderr
 	cmd.Env = append(os.Environ(),
+		"REDBOT_UPDATE_RUNNER_WRAPPER_VERSION="+r.wrapperVersion,
 		"REDBOT_UPDATE_RUNNER_WRAPPER_EXE="+r.wrapperExe,
 		"REDBOT_UPDATE_RUNNER_DIR="+r.runnerDir,
 	)