github地址:

https://github.com/judwhite/go-svc

svc封装了Service接口用于程序的初始化、启动以及退出

type Service interface {    // Init is called before the program/service is started and after it's    // determined if the program is running as a Windows Service.    Init(Environment) error    // Start is called after Init. This method must be non-blocking.    Start() error    // Stop is called in response to syscall.SIGINT, syscall.SIGTERM, or when a    // Windows Service is stopped.    Stop() error}

通过调用Run方法，监听系统的信号量，在收到退出信号的时候执行Stop()方法

// Run runs your Service.//// Run will block until one of the signals specified in sig is received.// If sig is empty syscall.SIGINT and syscall.SIGTERM are used by default.func Run(service Service, sig ...os.Signal) error {    env := environment{}    if err := service.Init(env); err != nil {        return err    }    if err := service.Start(); err != nil {        return err    }    if len(sig) == 0 {        sig = []os.Signal{syscall.SIGINT, syscall.SIGTERM}    }    signalChan := make(chan os.Signal, 1)    signalNotify(signalChan, sig...)    <-signalChan    return service.Stop()}

针对Windows系统做特殊处理

// Run runs an implementation of the Service interface.//// Run will block until the Windows Service is stopped or Ctrl+C is pressed if// running from the console.//// Stopping the Windows Service and Ctrl+C will call the Service's Stop method to// initiate a graceful shutdown.//// Note that WM_CLOSE is not handled (end task) and the Service's Stop method will// not be called.//// The sig parameter is to keep parity with the non-Windows API. Only syscall.SIGINT// (Ctrl+C) can be handled on Windows. Nevertheless, you can override the default// signals which are handled by specifying sig.func Run(service Service, sig ...os.Signal) error {    var err error    interactive, err := svcIsAnInteractiveSession()    if err != nil {        return err    }    if len(sig) == 0 {        sig = []os.Signal{syscall.SIGINT}    }    ws := &windowsService{        i:             service,        isInteractive: interactive,        signals:       sig,    }    if ws.IsWindowsService() {        // the working directory for a Windows Service is C:\Windows\System32        // this is almost certainly not what the user wants.        dir := filepath.Dir(os.Args[0])        if err = os.Chdir(dir); err != nil {            return err        }    }    if err = service.Init(ws); err != nil {        return err    }    return ws.run()}