@Override
    public List<String> getMetricLabelList() {
        return Arrays.asList(Constants.DATABASE_NAME, Constants.SCHEMA_NAME, Constants.TABLE_NAME);
    }
The configuration for Postgres CDC source.
inlong-sort/sort-flink/sort-flink-v1.13/sort-connectors/postgres-cdc/src/main/java/org/apache/inlong/sort/cdc/postgres/source/config/PostgresSourceConfig.java