func (m *dbConn) MesgChan() <-chan schema.Message { return datasource.SourceIterChannel(m.CreateIterator(), m.md.exit) }
func (m *StaticDataSource) MesgChan(filter expr.Node) <-chan datasource.Message { iter := m.CreateIterator(filter) return datasource.SourceIterChannel(iter, filter, m.exit) }