// ValidateOptions ensures that a set of UnitOptions is valid; if not, an error
// is returned detailing the issue encountered. If there are several problems
// with a set of options, only the first is returned.
func ValidateOptions(opts []*schema.UnitOption) error {
uf := schema.MapSchemaUnitOptionsToUnitFile(opts)
// Sanity check using go-systemd's deserializer, which will do things
// like check for excessive line lengths
_, err := gsunit.Deserialize(gsunit.Serialize(uf.Options))
if err != nil {
return err
}
j := &job.Job{
Unit: *uf,
}
conflicts := pkg.NewUnsafeSet(j.Conflicts()...)
peers := pkg.NewUnsafeSet(j.Peers()...)
for _, peer := range peers.Values() {
for _, conflict := range conflicts.Values() {
matched, _ := path.Match(conflict, peer)
if matched {
return fmt.Errorf("unresolvable requirements: peer %q matches conflict %q", peer, conflict)
}
}
}
hasPeers := peers.Length() != 0
hasConflicts := conflicts.Length() != 0
_, hasReqTarget := j.RequiredTarget()
u := &job.Unit{
Unit: *uf,
}
isGlobal := u.IsGlobal()
switch {
case hasReqTarget && hasPeers:
return errors.New("MachineID cannot be used with Peers")
case hasReqTarget && hasConflicts:
return errors.New("MachineID cannot be used with Conflicts")
case hasReqTarget && isGlobal:
return errors.New("MachineID cannot be used with Global")
case isGlobal && hasPeers:
return errors.New("Global cannot be used with Peers")
case isGlobal && hasConflicts:
return errors.New("Global cannot be used with Conflicts")
}
return nil
}
func (u *UnitFile) Bytes() []byte {
b, _ := ioutil.ReadAll(unit.Serialize(u.Options))
return b
}