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Signed-off-by: Alex Ellis (OpenFaaS Ltd) <alexellis2@gmail.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,100 @@ | ||
| package systemd | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "fmt" | ||
| "os" | ||
| "path/filepath" | ||
| "text/template" | ||
|
|
||
| execute "github.com/alexellis/go-execute/pkg/v1" | ||
| ) | ||
|
|
||
| func Enable(unit string) error { | ||
| task := execute.ExecTask{Command: "systemctl", | ||
| Args: []string{"enable", unit}, | ||
| StreamStdio: false, | ||
| } | ||
|
|
||
| res, err := task.Execute() | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| if res.ExitCode != 0 { | ||
| return fmt.Errorf("error executing task %s %v, stderr: %s", task.Command, task.Args, res.Stderr) | ||
| } | ||
|
|
||
| return nil | ||
| } | ||
|
|
||
| func Start(unit string) error { | ||
| task := execute.ExecTask{Command: "systemctl", | ||
| Args: []string{"start", unit}, | ||
| StreamStdio: false, | ||
| } | ||
|
|
||
| res, err := task.Execute() | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| if res.ExitCode != 0 { | ||
| return fmt.Errorf("error executing task %s %v, stderr: %s", task.Command, task.Args, res.Stderr) | ||
| } | ||
|
|
||
| return nil | ||
| } | ||
|
|
||
| func DaemonReload() error { | ||
| task := execute.ExecTask{Command: "systemctl", | ||
| Args: []string{"daemon-reload"}, | ||
| StreamStdio: false, | ||
| } | ||
|
|
||
| res, err := task.Execute() | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| if res.ExitCode != 0 { | ||
| return fmt.Errorf("error executing task %s %v, stderr: %s", task.Command, task.Args, res.Stderr) | ||
| } | ||
|
|
||
| return nil | ||
| } | ||
|
|
||
| func InstallUnit(name string) error { | ||
|
|
||
| tmpl, err := template.ParseFiles("./hack/" + name + ".service") | ||
|
|
||
| wd, _ := os.Getwd() | ||
| var tpl bytes.Buffer | ||
| userData := struct { | ||
| Cwd string | ||
| }{ | ||
| Cwd: wd, | ||
| } | ||
|
|
||
| err = tmpl.Execute(&tpl, userData) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| err = writeUnit(name+".service", tpl.Bytes()) | ||
|
|
||
| if err != nil { | ||
| return err | ||
| } | ||
| return nil | ||
| } | ||
|
|
||
| func writeUnit(name string, data []byte) error { | ||
| f, err := os.Create(filepath.Join("/lib/systemd/system", name)) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| defer f.Close() | ||
| _, err = f.Write(data) | ||
| return err | ||
| } |