lib/db, lib/protocol: Never need empty-version entries (fixes #6961) (#6962)

Avoid havoc when discovering locally-deleted-upgraded files during repair / need calculation... Co-authored-by: Simon Frei <freisim93@gmail.com>
2020-09-07 20:18:25 +02:00
parent e19728d8cc
commit 674fca3868
4 changed files with 81 additions and 7 deletions
@@ -127,6 +127,11 @@ func (v Vector) Counter(id ShortID) uint64 {
 	return 0
 }

+// IsEmpty returns true when there are no counters.
+func (v Vector) IsEmpty() bool {
+	return len(v.Counters) == 0
+}
+
 // DropOthers removes all counters, keeping only the one with given id. If there
 // is no such counter, an empty Vector is returned.
 func (v Vector) DropOthers(id ShortID) Vector {