func generateSnapServicesFile(app *snap.AppInfo, baseDir string) (string, error) {
if err := snap.ValidateApp(app); err != nil {
return "", err
}
desc := fmt.Sprintf("service %s for snap %s - autogenerated DO NO EDIT", app.Name, app.Snap.Name())
socketFileName := ""
if app.Socket {
socketFileName = filepath.Base(app.ServiceSocketFile())
}
return systemd.New(dirs.GlobalRootDir, nil).GenServiceFile(
&systemd.ServiceDescription{
SnapName: app.Snap.Name(),
AppName: app.Name,
Version: app.Snap.Version,
Revision: app.Snap.Revision,
Description: desc,
SnapPath: baseDir,
Start: app.Command,
Stop: app.Stop,
PostStop: app.PostStop,
StopTimeout: serviceStopTimeout(app),
AaProfile: app.SecurityTag(),
BusName: app.BusName,
Type: app.Daemon,
UdevAppName: app.SecurityTag(),
Socket: app.Socket,
SocketFileName: socketFileName,
Restart: app.RestartCond,
}), nil
}
func generateSnapSocketFile(app *snap.AppInfo, baseDir string) (string, error) {
if err := snap.ValidateApp(app); err != nil {
return "", err
}
// lp: #1515709, systemd will default to 0666 if no socket mode
// is specified
if app.SocketMode == "" {
app.SocketMode = "0660"
}
serviceFileName := filepath.Base(app.ServiceFile())
return systemd.New(dirs.GlobalRootDir, nil).GenSocketFile(
&systemd.ServiceDescription{
ServiceFileName: serviceFileName,
ListenStream: app.ListenStream,
SocketMode: app.SocketMode,
}), nil
}
func generateSnapBinaryWrapper(app *snap.AppInfo, pkgPath string) (string, error) {
wrapperTemplate := `#!/bin/sh
set -e
# snap info
{{.NewAppVars}}
if [ ! -d "$SNAP_USER_DATA" ]; then
mkdir -p "$SNAP_USER_DATA"
fi
export HOME="$SNAP_USER_DATA"
# Snap name is: {{.SnapName}}
# App name is: {{.AppName}}
ubuntu-core-launcher {{.UdevAppName}} {{.AaProfile}} {{.Target}} "$@"
`
if err := snap.ValidateApp(app); err != nil {
return "", err
}
actualBinPath := binPathForBinary(pkgPath, app)
var templateOut bytes.Buffer
t := template.Must(template.New("wrapper").Parse(wrapperTemplate))
wrapperData := struct {
SnapName string
AppName string
SnapArch string
SnapPath string
Version string
Revision int
UdevAppName string
Home string
Target string
AaProfile string
OldAppVars string
NewAppVars string
}{
SnapName: app.Snap.Name(),
AppName: app.Name,
SnapArch: arch.UbuntuArchitecture(),
SnapPath: pkgPath,
Version: app.Snap.Version,
Revision: app.Snap.Revision,
UdevAppName: app.SecurityTag(),
Home: "$HOME",
Target: actualBinPath,
AaProfile: app.SecurityTag(),
}
newVars := []string{}
for _, envVar := range append(
snapenv.GetBasicSnapEnvVars(wrapperData),
snapenv.GetUserSnapEnvVars(wrapperData)...) {
newVars = append(newVars, quoteEnvVar(envVar))
}
wrapperData.NewAppVars = strings.Join(newVars, "\n")
t.Execute(&templateOut, wrapperData)
return templateOut.String(), nil
}