package installer import ( "bytes" "fmt" "io/ioutil" "os" "path/filepath" "text/template" "git.rootprojects.org/root/watchdog.go/cmd/watchdog/installer/static" ) func install(c *Config) error { // Linux-specific config options if c.System { if "" == c.User { c.User = "root" } } if "" == c.Group { c.Group = c.User } serviceDir := "/etc/systemd/system/" // Check paths first serviceName := c.Name + ".service" if !c.System { // Not sure which of these it's supposed to be... // * ~/.local/share/systemd/user/watchdog.service // * ~/.config/systemd/user/watchdog.service // https://wiki.archlinux.org/index.php/Systemd/User serviceDir = filepath.Join(c.home, ".local/share/systemd/user") } err := os.MkdirAll(filepath.Dir(serviceDir), 0750) if nil != err { return err } // Create service file from template b, err := static.ReadFile("dist/etc/systemd/system/_name_.service.tmpl") if err != nil { return err } s := string(b) rw := &bytes.Buffer{} // not sure what the template name does, but whatever tmpl, err := template.New("service").Parse(s) if err != nil { return err } err = tmpl.Execute(rw, c) if nil != err { return err } // Write the file out servicePath := filepath.Join(serviceDir, serviceName) if err := ioutil.WriteFile(servicePath, rw.Bytes(), 0644); err != nil { return fmt.Errorf("ioutil.WriteFile error: %v", err) } // TODO template this as well? userspace := "" sudo := "sudo " if !c.System { userspace = "--user " sudo = "" } fmt.Printf("System service installed as '%s'.\n", servicePath) fmt.Printf("Run the following to start '%s':\n", c.Name) fmt.Printf("\t" + sudo + "systemctl " + userspace + "daemon-reload\n") fmt.Printf("\t"+sudo+"systemctl "+userspace+"restart %s.service\n", c.Name) fmt.Printf("\t"+sudo+"journalctl "+userspace+"-xefu %s\n", c.Name) return nil }