// isModifiedPredicate creates a predicate that returns true when the given unit file is modified
func (d *Deployment) isModifiedPredicate(sg scalingGroupUnits, f scheduler.Scheduler, ui *stateUI) func(string) bool {
return func(unitName string) bool {
if d.force {
return true
}
ui.MessageSink <- fmt.Sprintf("Checking %s for modifications", unitName)
cat, err := f.Cat(unitName)
if err != nil {
ui.Verbosef("Failed to cat '%s': %#v\n", unitName, err)
return true // Assume it is modified
}
newUnit, err := sg.get(unitName)
if err != nil {
ui.Verbosef("Failed to read new '%s' unit: %#v\n", unitName, err)
return true // Assume it is modified
}
if !compareUnitContent(unitName, cat, newUnit.Content(), ui) {
return true
}
ui.Verbosef("Unit '%s' has not changed\n", unitName)
return false
}
}
