timescaledb/sql/setup_main.sql

-- Initializes a data node in the cluster.
CREATE OR REPLACE FUNCTION _timescaledb_internal.setup_main(restore BOOLEAN = FALSE)
    RETURNS void LANGUAGE PLPGSQL AS
$BODY$
DECLARE
    table_name NAME;
BEGIN

    DROP TRIGGER IF EXISTS trigger_main_on_change_chunk_index
    ON _timescaledb_catalog.chunk_index;
    CREATE TRIGGER trigger_main_on_change_chunk_index
    AFTER INSERT OR UPDATE OR DELETE ON _timescaledb_catalog.chunk_index
    FOR EACH ROW EXECUTE PROCEDURE _timescaledb_internal.on_change_chunk_index();

    DROP TRIGGER IF EXISTS trigger_main_on_change_chunk
    ON _timescaledb_catalog.chunk;
    CREATE TRIGGER trigger_main_on_change_chunk
    AFTER UPDATE OR DELETE OR INSERT ON _timescaledb_catalog.chunk
    FOR EACH ROW EXECUTE PROCEDURE _timescaledb_internal.on_change_chunk();

    -- no DELETE: it would be a no-op
    DROP TRIGGER IF EXISTS trigger_1_main_on_change_hypertable
    ON _timescaledb_catalog.hypertable;
    CREATE TRIGGER trigger_1_main_on_change_hypertable
    AFTER INSERT OR UPDATE OR DELETE ON _timescaledb_catalog.hypertable
    FOR EACH ROW EXECUTE PROCEDURE _timescaledb_internal.on_change_hypertable();

    -- no DELETE: it would be a no-op
    DROP TRIGGER IF EXISTS trigger_main_on_change_hypertable_index
    ON _timescaledb_catalog.hypertable_index;
    CREATE TRIGGER trigger_main_on_change_hypertable_index
    AFTER INSERT OR UPDATE OR DELETE ON _timescaledb_catalog.hypertable_index
    FOR EACH ROW EXECUTE PROCEDURE _timescaledb_internal.on_change_hypertable_index();


    -- No support for TRUNCATE currently, so have a trigger to prevent it on
    -- all meta tables.
    FOREACH table_name IN ARRAY ARRAY ['hypertable', 'hypertable_index',
    'dimension', 'dimension_slice', 'chunk_constraint'] :: NAME [] LOOP
        EXECUTE format(
            $$
                DROP TRIGGER IF EXISTS trigger_block_truncate ON _timescaledb_catalog.%1$s;
                CREATE TRIGGER trigger_block_truncate
                BEFORE TRUNCATE ON _timescaledb_catalog.%1$s
                FOR EACH STATEMENT EXECUTE PROCEDURE _timescaledb_internal.on_truncate_block();
            $$, table_name);
    END LOOP;

    CREATE EVENT TRIGGER ddl_create_index ON ddl_command_end
        WHEN tag IN ('create index')
        EXECUTE PROCEDURE _timescaledb_internal.ddl_process_create_index();

    CREATE EVENT TRIGGER ddl_alter_index ON ddl_command_end
        WHEN tag IN ('alter index')
        EXECUTE PROCEDURE _timescaledb_internal.ddl_process_alter_index();

    CREATE EVENT TRIGGER ddl_drop_index ON sql_drop
        WHEN tag IN ('drop index')
        EXECUTE PROCEDURE _timescaledb_internal.ddl_process_drop_index();

    CREATE EVENT TRIGGER ddl_create_trigger ON ddl_command_end
       WHEN tag IN ('create trigger')
       EXECUTE PROCEDURE _timescaledb_internal.ddl_process_create_trigger();

    CREATE EVENT TRIGGER ddl_check_drop_command
       ON sql_drop
       EXECUTE PROCEDURE _timescaledb_internal.ddl_process_drop_table();

    IF restore THEN
        ALTER EXTENSION timescaledb ADD EVENT TRIGGER ddl_create_index;
        ALTER EXTENSION timescaledb ADD EVENT TRIGGER ddl_alter_index;
        ALTER EXTENSION timescaledb ADD EVENT TRIGGER ddl_drop_index;
        ALTER EXTENSION timescaledb ADD EVENT TRIGGER ddl_create_trigger;
        ALTER EXTENSION timescaledb ADD EVENT TRIGGER ddl_check_drop_command;
    END IF;

END
$BODY$
SET client_min_messages = WARNING -- supress notices for trigger drops
;