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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,170 @@ | ||
| -- | ||
| -- E-Maj: migration from 3.0.0 to <devel> | ||
| -- | ||
| -- This software is distributed under the GNU General Public License. | ||
| -- | ||
| -- This script upgrades an existing installation of E-Maj extension. | ||
| -- | ||
|
|
||
| -- complain if this script is executed in psql, rather than via an ALTER EXTENSION statement | ||
| \echo Use "ALTER EXTENSION emaj UPDATE TO..." to upgrade the E-Maj extension. \quit | ||
|
|
||
| --SET client_min_messages TO WARNING; | ||
| SET client_min_messages TO NOTICE; | ||
|
|
||
| ------------------------------------ | ||
| -- -- | ||
| -- checks -- | ||
| -- -- | ||
| ------------------------------------ | ||
| -- Check that the upgrade conditions are met. | ||
| DO | ||
| $do$ | ||
| DECLARE | ||
| v_emajVersion TEXT; | ||
| v_groupList TEXT; | ||
| BEGIN | ||
| -- check the current role is a superuser | ||
| PERFORM 0 FROM pg_roles WHERE rolname = current_user AND rolsuper; | ||
| IF NOT FOUND THEN | ||
| RAISE EXCEPTION 'E-Maj upgrade: the current user (%) is not a superuser.', current_user; | ||
| END IF; | ||
| -- the emaj version registered in emaj_param must be '3.0.0' | ||
| SELECT param_value_text INTO v_emajVersion FROM emaj.emaj_param WHERE param_key = 'emaj_version'; | ||
| IF v_emajVersion <> '3.0.0' THEN | ||
| RAISE EXCEPTION 'E-Maj upgrade: the current E-Maj version (%) is not 3.0.0',v_emajVersion; | ||
| END IF; | ||
| -- the installed postgres version must be at least 9.5 | ||
| IF current_setting('server_version_num')::int < 90500 THEN | ||
| RAISE EXCEPTION 'E-Maj upgrade: the current PostgreSQL version (%) is not compatible with the new E-Maj version. The PostgreSQL version should be at least 9.5.', current_setting('server_version'); | ||
| END IF; | ||
| -- no existing group must have been created with a postgres version prior 8.4 | ||
| SELECT string_agg(group_name, ', ') INTO v_groupList FROM emaj.emaj_group | ||
| WHERE cast(to_number(substring(group_pg_version FROM E'^(\\d+)'),'99') * 100 + | ||
| to_number(substring(group_pg_version FROM E'^\\d+\\.(\\d+)'),'99') AS INTEGER) < 804; | ||
| IF v_groupList IS NOT NULL THEN | ||
| RAISE EXCEPTION 'E-Maj upgrade: groups "%" have been created with a too old postgres version (< 8.4). Drop these groups before upgrading. ',v_groupList; | ||
| END IF; | ||
| END; | ||
| $do$; | ||
|
|
||
| -- OK, the upgrade operation can start... | ||
|
|
||
| -- insert the upgrade begin record in the operation history | ||
| INSERT INTO emaj.emaj_hist (hist_function, hist_event, hist_object, hist_wording) | ||
| VALUES ('EMAJ_INSTALL','BEGIN','E-Maj <devel>', 'Upgrade from 3.0.0 started'); | ||
|
|
||
| -- lock emaj_group table to avoid any concurrent E-Maj activity | ||
| LOCK TABLE emaj.emaj_group IN EXCLUSIVE MODE; | ||
|
|
||
| -- disable the event triggers | ||
| SELECT emaj._disable_event_triggers(); | ||
|
|
||
| ---------------------------------------------- | ||
| -- -- | ||
| -- emaj enums, tables, views and sequences -- | ||
| -- -- | ||
| ---------------------------------------------- | ||
|
|
||
|
|
||
| -- | ||
| -- add created or recreated tables and sequences to the list of content to save by pg_dump | ||
| -- | ||
|
|
||
| ------------------------------------ | ||
| -- -- | ||
| -- emaj types -- | ||
| -- -- | ||
| ------------------------------------ | ||
|
|
||
| ------------------------------------ | ||
| -- -- | ||
| -- emaj functions -- | ||
| -- -- | ||
| ------------------------------------ | ||
| -- recreate functions that have been previously dropped in the tables structure upgrade step and will not be recreated later in this script | ||
|
|
||
|
|
||
| --<begin_functions> pattern used by the tool that extracts and insert the functions definition | ||
|
|
||
| --<end_functions> pattern used by the tool that extracts and insert the functions definition | ||
| ------------------------------------------ | ||
| -- -- | ||
| -- event triggers and related functions -- | ||
| -- -- | ||
| ------------------------------------------ | ||
|
|
||
| ------------------------------------ | ||
| -- -- | ||
| -- emaj roles and rights -- | ||
| -- -- | ||
| ------------------------------------ | ||
| REVOKE ALL ON ALL FUNCTIONS IN SCHEMA emaj FROM PUBLIC; | ||
|
|
||
| GRANT ALL ON ALL TABLES IN SCHEMA emaj TO emaj_adm; | ||
| GRANT ALL ON ALL SEQUENCES IN SCHEMA emaj TO emaj_adm; | ||
| GRANT EXECUTE ON ALL FUNCTIONS IN SCHEMA emaj TO emaj_adm; | ||
|
|
||
| GRANT SELECT ON ALL TABLES IN SCHEMA emaj TO emaj_viewer; | ||
| GRANT SELECT ON ALL SEQUENCES IN SCHEMA emaj TO emaj_viewer; | ||
| REVOKE SELECT ON TABLE emaj.emaj_param FROM emaj_viewer; | ||
|
|
||
|
|
||
| ------------------------------------ | ||
| -- -- | ||
| -- complete the upgrade -- | ||
| -- -- | ||
| ------------------------------------ | ||
|
|
||
| -- enable the event triggers | ||
| DO | ||
| $tmp$ | ||
| DECLARE | ||
| v_event_trigger_array TEXT[]; | ||
| BEGIN | ||
| -- build the event trigger names array from the pg_event_trigger table | ||
| SELECT coalesce(array_agg(evtname),ARRAY[]::TEXT[]) INTO v_event_trigger_array | ||
| FROM pg_catalog.pg_event_trigger WHERE evtname LIKE 'emaj%' AND evtenabled = 'D'; | ||
| -- call the _enable_event_triggers() function | ||
| PERFORM emaj._enable_event_triggers(v_event_trigger_array); | ||
| END; | ||
| $tmp$; | ||
|
|
||
| -- Set comments for all internal functions, | ||
| -- by directly inserting a row in the pg_description table for all emaj functions that do not have yet a recorded comment | ||
| INSERT INTO pg_catalog.pg_description (objoid, classoid, objsubid, description) | ||
| SELECT pg_proc.oid, pg_class.oid, 0 , 'E-Maj internal function' | ||
| FROM pg_catalog.pg_proc, pg_catalog.pg_class | ||
| WHERE pg_class.relname = 'pg_proc' | ||
| AND pg_proc.oid IN -- list all emaj functions that do not have yet a comment in pg_description | ||
| (SELECT pg_proc.oid | ||
| FROM pg_catalog.pg_proc | ||
| JOIN pg_catalog.pg_namespace ON (pronamespace=pg_namespace.oid) | ||
| LEFT OUTER JOIN pg_catalog.pg_description ON (pg_description.objoid = pg_proc.oid | ||
| AND classoid = (SELECT oid FROM pg_catalog.pg_class WHERE relname = 'pg_proc') | ||
| AND objsubid = 0) | ||
| WHERE nspname = 'emaj' AND (proname LIKE E'emaj\\_%' OR proname LIKE E'\\_%') | ||
| AND pg_description.description IS NULL | ||
| ); | ||
|
|
||
| -- update the version id in the emaj_param table | ||
| UPDATE emaj.emaj_param SET param_value_text = '<devel>' WHERE param_key = 'emaj_version'; | ||
|
|
||
| -- insert the upgrade end record in the operation history | ||
| INSERT INTO emaj.emaj_hist (hist_function, hist_event, hist_object, hist_wording) | ||
| VALUES ('EMAJ_INSTALL','END','E-Maj <devel>', 'Upgrade from 3.0.0 completed'); | ||
|
|
||
| -- post installation checks | ||
| DO | ||
| $tmp$ | ||
| DECLARE | ||
| BEGIN | ||
| -- check the max_prepared_transactions GUC value | ||
| IF current_setting('max_prepared_transactions')::int <= 1 THEN | ||
| RAISE WARNING 'E-Maj upgrade: as the max_prepared_transactions parameter value (%) on this cluster is too low, no parallel rollback is possible.', current_setting('max_prepared_transactions'); | ||
| END IF; | ||
| END; | ||
| $tmp$; | ||
|
|
||
| RESET default_tablespace; | ||
| SET client_min_messages TO default; |
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