@Override
        public Object read(SourceRecord record, @Nullable TableChange tableSchema, RowData rowData) {
            return getCanalData(record, tableSchema, (GenericRowData) rowData);
        }
It indicates the data streams with canal-json format.
inlong-sort/sort-flink/sort-flink-v1.13/sort-connectors/postgres-cdc/src/main/java/org/apache/inlong/sort/cdc/postgres/table/PostgreSQLReadableMetaData.java