func genSocketFile(appInfo *snap.AppInfo) string {
serviceTemplate := `[Unit]
# Auto-generated, DO NO EDIT
Description=Socket for snap application {{.App.Snap.Name}}.{{.App.Name}}
PartOf={{.ServiceFileName}}
X-Snappy=yes
[Socket]
ListenStream={{.App.ListenStream}}
{{if .App.SocketMode}}SocketMode={{.App.SocketMode}}{{end}}
[Install]
WantedBy={{.SocketTargetUnit}}
`
var templateOut bytes.Buffer
t := template.Must(template.New("wrapper").Parse(serviceTemplate))
wrapperData := struct {
App *snap.AppInfo
ServiceFileName string
SocketTargetUnit string
}{
App: appInfo,
ServiceFileName: filepath.Base(appInfo.ServiceFile()),
SocketTargetUnit: systemd.SocketsTarget,
}
if err := t.Execute(&templateOut, wrapperData); err != nil {
// this can never happen, except we forget a variable
logger.Panicf("Unable to execute template: %v", err)
}
return templateOut.String()
}
