faasd/pkg/systemd/systemd.go
Alex Ellis (OpenFaaS Ltd) d135999d3b Set working directory for faasd / faas-containerd
* faasd writes secrets to wd + /secrets/*
* faas-containerd is passed a custom path to use to load the
secrets

Both services gain their work /run/ folders for temporary and
working files. Tested on RPi3 e2e with faasd install.

Signed-off-by: Alex Ellis (OpenFaaS Ltd) <alexellis2@gmail.com>
2020-01-05 12:00:43 +00:00

103 lines
1.9 KiB
Go

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, tokens map[string]string) error {
if len(tokens["Cwd"]) == 0 {
return fmt.Errorf("key Cwd expected in tokens parameter")
}
tmplName := "./hack/" + name + ".service"
tmpl, err := template.ParseFiles(tmplName)
if err != nil {
return fmt.Errorf("error loading template %s, error %s", tmplName, err)
}
var tpl bytes.Buffer
err = tmpl.Execute(&tpl, tokens)
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
}