apigo/templates/_main.go
2024-10-20 09:03:45 +08:00

198 lines
4.8 KiB
Go

package main
import (
"fmt"
"os"
"os/exec"
"path/filepath"
"regexp"
"strings"
"syscall"
"time"
"apigo.cc/gojs"
{{range $pkg, $ver := .Module}}
_ "{{$pkg}}"
{{- end}}
{{range $pkg, $ver := .ExtraImport}}
_ "{{$pkg}}"
{{- end}}
"github.com/ssgo/log"
"github.com/ssgo/u"
)
var appName = "{{.Name}}"
var appVersion = "{{.Version}}"
var idFixMatcher = regexp.MustCompile(`[^a-zA-Z0-9_]`)
// TODO embed .CacheFiles
func init() {
{{- range $alias, $pkg := .ModuleAlias }}
gojs.Alias("{{$alias}}", "{{$pkg}}")
{{- end}}
}
func main() {
if appName == "" {
appName = filepath.Base(os.Args[0])
appName = strings.TrimSuffix(appName, ".exe")
}
if appVersion == "" {
appVersion = "0.0.1"
}
args := os.Args[1:]
if len(args) > 0 {
if args[0] == "help" || args[0] == "--help" || args[0] == "-h" {
printUsage()
return
}
if args[0] == "version" || args[0] == "--version" || args[0] == "-v" {
fmt.Println(appName, appVersion)
return
}
if args[0] == "export" || args[0] == "-e" {
gojs.ExportForDev()
return
}
}
cmd := ""
if len(args) > 0 && (args[0] == "start" || args[0] == "stop" || args[0] == "restart" || args[0] == "test") {
cmd = args[0]
args = args[1:]
}
id := ""
mainFile := "{{.Main}}"
isWatch := false
mainArgs := make([]any, 0)
for i := 0; i < len(args); i++ {
arg := args[i]
if strings.HasPrefix(arg, "-") {
switch arg[1:] {
case "id":
i++
strings.TrimSpace(args[i])
case "main":
i++
strings.TrimSpace(args[i])
case "w":
isWatch = true
}
} else {
mainArgs = append(mainArgs, arg)
}
}
if !u.FileExists(mainFile) {
log.DefaultLogger.Error("main file not found", "mainFile", mainFile)
return
}
if id == "" {
id = fmt.Sprintf("%s_%s_%s", appName, mainFile, appVersion)
}
id = idFixMatcher.ReplaceAllString(id, "_")
homeDir, _ := os.UserHomeDir()
pidFile := filepath.Join(homeDir, ".pids", id+".pid")
pid := u.Int(u.ReadFileN(pidFile))
fmt.Println(appName, appVersion, mainFile, id, pidFile, pid)
switch cmd {
case "start":
if pid > 0 && checkProcess(pid) {
log.DefaultLogger.Info("process already started", "pid", pid)
} else {
startProcess(pidFile, mainFile)
}
case "stop":
if pid > 0 {
killProcess(pid, mainFile)
_ = os.Remove(pidFile)
}
case "restart":
if pid > 0 {
killProcess(pid, mainFile)
_ = os.Remove(pidFile)
}
startProcess(pidFile, mainFile)
case "test":
if pid > 0 {
killProcess(pid, mainFile)
_ = os.Remove(pidFile)
}
startProcess(pidFile, mainFile)
default:
if isWatch {
gojs.WatchRun(mainFile, mainArgs...)
} else {
gojs.RunFile(mainFile, mainArgs...)
gojs.WaitAll()
}
}
}
func startProcess(pidFile string, mainFile string) {
var cmd *exec.Cmd
cmd = exec.Command(os.Args[0], "-main", mainFile)
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
if err := cmd.Start(); err == nil {
u.WriteFile(pidFile, u.String(cmd.Process.Pid))
log.DefaultLogger.Info("started", "appName", appName, "appVersion", appVersion, "mainFile", mainFile, "pid", cmd.Process.Pid)
} else {
log.DefaultLogger.Error("start failed", "appName", appName, "appVersion", appVersion, "mainFile", mainFile, "err", err)
}
}
func kill(pid int, sig os.Signal) error {
if proc, err := os.FindProcess(pid); err == nil {
return proc.Signal(sig)
} else {
return err
}
}
func killProcess(pid int, mainFile string) {
if err := kill(pid, syscall.SIGTERM); err == nil {
log.DefaultLogger.Info("killing", "appName", appName, "appVersion", appVersion, "mainFile", mainFile, "pid", pid)
t1 := time.Now().UnixMilli()
for i := 0; i < 100; i++ {
if !checkProcess(pid) {
log.DefaultLogger.Info("killed", "appName", appName, "appVersion", appVersion, "mainFile", mainFile, "pid", pid, "usedTime", (time.Duration(time.Now().UnixMilli()-t1) * time.Millisecond).String())
return
}
time.Sleep(100 * time.Millisecond)
}
err := kill(pid, syscall.SIGKILL)
if checkProcess(pid) {
log.DefaultLogger.Error("fource kill failed", "appName", appName, "appVersion", appVersion, "mainFile", mainFile, "pid", pid, "err", err)
} else {
log.DefaultLogger.Info("fource killed", "appName", appName, "appVersion", appVersion, "mainFile", mainFile, "pid", pid)
}
}
}
func checkProcess(pid int) bool {
// return kill(pid, 0) == nil
_, err := os.FindProcess(pid)
return err == nil
}
func printUsage() {
fmt.Println(appName, appVersion)
fmt.Println("Usage:")
fmt.Println(" ", appName, "[-main mainFile] ...", "run script")
fmt.Println(" ", appName, "version", "- show version")
fmt.Println(" ", appName, "export", "- export for development")
fmt.Println(" ", appName, "start [-id id] [-main mainFile]", "start server")
fmt.Println(" ", appName, "stop [-id id]", "stop server")
fmt.Println(" ", appName, "restart [-id id] [-main mainFile]", "restart server")
fmt.Println(" ", appName, "help", "- show help")
}