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https://github.com/timescale/timescaledb.git
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a409065285
Since multi-node is not supported on PG16, add errors to multi-node functions when run on this PostgreSQL version.
86 lines
3.5 KiB
SQL
86 lines
3.5 KiB
SQL
-- This file and its contents are licensed under the Apache License 2.0.
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-- Please see the included NOTICE for copyright information and
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-- LICENSE-APACHE for a copy of the license.
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-- This file is always prepended to all upgrade and downgrade scripts.
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SET LOCAL search_path TO pg_catalog, pg_temp;
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-- Disable parallel execution for the duration of the update process.
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-- This avoids version mismatch errors that would have beeen triggered by the
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-- parallel workers in ts_extension_check_version().
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SET LOCAL max_parallel_workers = 0;
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-- Triggers should be disabled during upgrades to avoid having them
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-- invoke functions that might load an old version of the shared
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-- library before those functions have been updated.
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DROP EVENT TRIGGER IF EXISTS timescaledb_ddl_command_end;
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DROP EVENT TRIGGER IF EXISTS timescaledb_ddl_sql_drop;
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-- Since we want to call the new version of restart_background_workers we
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-- create a function that points to that version. The proper restart_background_workers
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-- may either be in _timescaledb_internal or in _timescaledb_functions
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-- depending on the version we are upgrading from and we can't make
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-- the move in this location as the new schema might not have been set up.
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CREATE FUNCTION _timescaledb_internal._tmp_restart_background_workers()
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RETURNS BOOL
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AS '@LOADER_PATHNAME@', 'ts_bgw_db_workers_restart'
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LANGUAGE C VOLATILE;
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SELECT _timescaledb_internal._tmp_restart_background_workers();
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DROP FUNCTION _timescaledb_internal._tmp_restart_background_workers();
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-- Table for ACL and initprivs of tables.
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CREATE TABLE _timescaledb_internal.saved_privs(
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tmpnsp name,
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tmpname name,
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tmpacl aclitem[],
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tmpini aclitem[],
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UNIQUE (tmpnsp, tmpname));
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-- We save away both the ACL and the initprivs for all tables and
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-- views in the extension (but not for chunks and internal objects) so
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-- that we can restore them to the proper state after the update.
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INSERT INTO _timescaledb_internal.saved_privs
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SELECT nspname, relname, relacl, initprivs
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FROM pg_class cl JOIN pg_namespace ns ON ns.oid = relnamespace
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JOIN pg_init_privs ip ON ip.objoid = cl.oid AND ip.objsubid = 0 AND ip.classoid = 'pg_class'::regclass
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WHERE
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nspname IN ('_timescaledb_catalog', '_timescaledb_config')
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OR (
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relname IN ('hypertable_chunk_local_size', 'compressed_chunk_stats', 'bgw_job_stat', 'bgw_policy_chunk_stats')
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AND nspname = '_timescaledb_internal'
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)
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;
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-- ERROR if trying to update the extension on PG16 using Multi-Node
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DO $$
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DECLARE
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data_nodes TEXT;
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dist_hypertables TEXT;
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BEGIN
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IF current_setting('server_version_num')::int >= 160000 THEN
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SELECT string_agg(format('%I.%I', hypertable_schema, hypertable_name), ', ')
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INTO dist_hypertables
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FROM timescaledb_information.hypertables
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WHERE is_distributed IS TRUE;
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IF dist_hypertables IS NOT NULL THEN
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RAISE USING
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ERRCODE = 'feature_not_supported',
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MESSAGE = 'cannot upgrade because multi-node is not supported on PostgreSQL >= 16',
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DETAIL = 'The following distributed hypertables should be migrated to regular: '||dist_hypertables;
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END IF;
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SELECT string_agg(format('%I', node_name), ', ')
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INTO data_nodes
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FROM timescaledb_information.data_nodes;
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IF data_nodes IS NOT NULL THEN
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RAISE USING
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ERRCODE = 'feature_not_supported',
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MESSAGE = 'cannot upgrade because multi-node is not supported on PostgreSQL >= 16',
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DETAIL = 'The following data nodes should be removed: '||data_nodes;
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END IF;
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END IF;
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END $$;
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