// MergeUpdate copies a subset of information from the input Registration
// into the Registration r. It returns true if an update was performed and the base object
// was changed, and false if no change was made.
func mergeUpdate(r *core.Registration, input core.Registration) bool {
var changed bool
// Note: we allow input.Contact to overwrite r.Contact even if the former is
// empty in order to allow users to remove the contact associated with
// a registration. Since the field type is a pointer to slice of pointers we
// can perform a nil check to differentiate between an empty value and a nil
// (e.g. not provided) value
if input.Contact != nil && !contactsEqual(r, input) {
r.Contact = input.Contact
changed = true
}
// If there is an agreement in the input and it's not the same as the base,
// then we update the base
if len(input.Agreement) > 0 && input.Agreement != r.Agreement {
r.Agreement = input.Agreement
changed = true
}
if features.Enabled(features.AllowKeyRollover) && input.Key != nil {
sameKey, _ := core.PublicKeysEqual(r.Key.Key, input.Key.Key)
if !sameKey {
r.Key = input.Key
changed = true
}
}
return changed
}
