protect writing to closed channel

hashicorp · Apr 18, 2016 · c3c3b66 · c3c3b66
1 parent fcd9a55
commit c3c3b66
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/client/driver/logging/rotator.go b/client/driver/logging/rotator.go
@@ -130,7 +130,9 @@ func (f *FileRotator) nextFile() error {
 		break
 	}
 	// Purge old files if we have more files than MaxFiles
-	if f.logFileIdx-f.oldestLogFileIdx >= f.MaxFiles {
+	f.closedLock.Lock()
+	defer f.closedLock.Unlock()
+	if f.logFileIdx-f.oldestLogFileIdx >= f.MaxFiles && !f.closed {
 		select {
 		case f.purgeCh <- struct{}{}:
 		default: