func installService(name, desc string) error {
exepath, err := exePath()
if err != nil {
return err
}
m, err := mgr.Connect()
if err != nil {
return err
}
defer m.Disconnect()
s, err := m.OpenService(name)
if err == nil {
s.Close()
return fmt.Errorf("service %s already exists", name)
}
s, err = m.CreateService(name, exepath, mgr.Config{DisplayName: desc})
if err != nil {
return err
}
defer s.Close()
err = eventlog.InstallAsEventCreate(name, eventlog.Error|eventlog.Warning|eventlog.Info)
if err != nil {
s.Delete()
return fmt.Errorf("SetupEventLogSource() failed: %s", err)
}
return nil
}
// installService attempts to install the btcd service. Typically this should
// be done by the msi installer, but it is provided here since it can be useful
// for development.
func installService() error {
// Get the path of the current executable. This is needed because
// os.Args[0] can vary depending on how the application was launched.
// For example, under cmd.exe it will only be the name of the app
// without the path or extension, but under mingw it will be the full
// path including the extension.
exePath, err := filepath.Abs(os.Args[0])
if err != nil {
return err
}
if filepath.Ext(exePath) == "" {
exePath += ".exe"
}
// Connect to the windows service manager.
serviceManager, err := mgr.Connect()
if err != nil {
return err
}
defer serviceManager.Disconnect()
// Ensure the service doesn't already exist.
service, err := serviceManager.OpenService(svcName)
if err == nil {
service.Close()
return fmt.Errorf("service %s already exists", svcName)
}
// Install the service.
service, err = serviceManager.CreateService(svcName, exePath, mgr.Config{
DisplayName: svcDisplayName,
Description: svcDesc,
})
if err != nil {
return err
}
defer service.Close()
// Support events to the event log using the standard "standard" Windows
// EventCreate.exe message file. This allows easy logging of custom
// messges instead of needing to create our own message catalog.
eventlog.Remove(svcName)
eventsSupported := uint32(eventlog.Error | eventlog.Warning | eventlog.Info)
err = eventlog.InstallAsEventCreate(svcName, eventsSupported)
if err != nil {
return err
}
return nil
}