func (s *LogStorage) AppLogCollection(appName string) *storage.Collection {
	if appName == "" {
		return nil
	}
	return s.Collection("logs_" + appName)
}
func (s *LogStorage) AppLogCollection(appName string) *storage.Collection {
	if appName == "" {
		return nil
	}
	return s.Collection("logs_" + appName)
}
func ( s * LogStorage ) AppLogCollection ( appName string ) * storage . Collection { if appName == " " { return nil } return s . Collection ( " " + appName ) }
// AppLogCollection returns the logs collection for one app from MongoDB.
AppLogCollection returns the logs collection for one app from MongoDB .