[MM-22133] Allow exporting and importing archived channels (#23724)

server/channels/store/retrylayer/retrylayer.go

@@ -1216,6 +1216,27 @@ func (s *RetryLayerChannelStore) GetByNames(team_id string, names []string, allo
 
 }
 
+func (s *RetryLayerChannelStore) GetByNamesIncludeDeleted(team_id string, names []string, allowFromCache bool) ([]*model.Channel, error) {
+
+	tries := 0
+	for {
+		result, err := s.ChannelStore.GetByNamesIncludeDeleted(team_id, names, allowFromCache)
+		if err == nil {
+			return result, nil
+		}
+		if !isRepeatableError(err) {
+			return result, err
+		}
+		tries++
+		if tries >= 3 {
+			err = errors.Wrap(err, "giving up after 3 consecutive repeatable transaction failures")
+			return result, err
+		}
+		timepkg.Sleep(100 * timepkg.Millisecond)
+	}
+
+}
+
 func (s *RetryLayerChannelStore) GetChannelCounts(teamID string, userID string) (*model.ChannelCounts, error) {
 
 	tries := 0
@@ -1237,11 +1258,11 @@ func (s *RetryLayerChannelStore) GetChannelCounts(teamID string, userID string)
 
 }
 
-func (s *RetryLayerChannelStore) GetChannelMembersForExport(userID string, teamID string) ([]*model.ChannelMemberForExport, error) {
+func (s *RetryLayerChannelStore) GetChannelMembersForExport(userID string, teamID string, includeArchivedChannel bool) ([]*model.ChannelMemberForExport, error) {
 
 	tries := 0
 	for {
-		result, err := s.ChannelStore.GetChannelMembersForExport(userID, teamID)
+		result, err := s.ChannelStore.GetChannelMembersForExport(userID, teamID, includeArchivedChannel)
 		if err == nil {
 			return result, nil
 		}
@@ -6892,11 +6913,11 @@ func (s *RetryLayerPostStore) GetOldestEntityCreationTime() (int64, error) {
 
 }
 
-func (s *RetryLayerPostStore) GetParentsForExportAfter(limit int, afterID string) ([]*model.PostForExport, error) {
+func (s *RetryLayerPostStore) GetParentsForExportAfter(limit int, afterID string, includeArchivedChannels bool) ([]*model.PostForExport, error) {
 
 	tries := 0
 	for {
-		result, err := s.PostStore.GetParentsForExportAfter(limit, afterID)
+		result, err := s.PostStore.GetParentsForExportAfter(limit, afterID, includeArchivedChannels)
 		if err == nil {
 			return result, nil
 		}