Zabbix/partitioning
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feat: Initial commit for 8.0 branch. history_json was added.

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This commit is contained in:
Maksym Buz
2026-02-20 21:35:11 +00:00
parent 9d1b84225c
commit 9581dbdb62
31 changed files with 177 additions and 853991 deletions
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28
postgresql/procedures/02_maintenance.sql
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@@ -1,6 +1,5 @@
-- ============================================================================
-- SCRIPT: 02_maintenance.sql
-- DESCRIPTION: Core functions for Zabbix partitioning (Create, Drop, Maintain).
-- Core functions for Zabbix partitioning (Create, Drop, Maintain).
-- ============================================================================
-- Function to check if a partition exists
@@ -11,7 +10,6 @@ BEGIN
SELECT 1 FROM pg_class c
JOIN pg_namespace n ON n.oid = c.relnamespace
WHERE c.relname = p_partition_name
AND n.nspname = 'public'
);
END;
$$ LANGUAGE plpgsql;
@@ -28,8 +26,17 @@ DECLARE
v_start_ts bigint;
v_end_ts bigint;
v_suffix text;
v_parent_schema text;
BEGIN
-- (No changes needed for time here as passed params are already UTC-adjusted in caller)
-- Determine the schema of the parent table
SELECT n.nspname INTO v_parent_schema
FROM pg_class c
JOIN pg_namespace n ON n.oid = c.relnamespace
WHERE c.relname = p_parent_table;
IF NOT FOUND THEN
RAISE EXCEPTION 'Parent table % not found', p_parent_table;
END IF;
v_start_ts := extract(epoch from p_start_time)::bigint;
v_end_ts := extract(epoch from p_end_time)::bigint;
@@ -43,8 +50,8 @@ BEGIN
IF NOT partitions.partition_exists(v_partition_name) THEN
EXECUTE format(
'CREATE TABLE public.%I PARTITION OF public.%I FOR VALUES FROM (%s) TO (%s)',
v_partition_name, p_parent_table, v_start_ts, v_end_ts
'CREATE TABLE %I.%I PARTITION OF %I.%I FOR VALUES FROM (%s) TO (%s)',
v_parent_schema, v_partition_name, v_parent_schema, p_parent_table, v_start_ts, v_end_ts
);
END IF;
END;
@@ -61,16 +68,19 @@ DECLARE
v_partition record;
v_partition_date timestamp with time zone;
v_suffix text;
v_partition_schema text;
BEGIN
-- Calculate cutoff timestamp
v_cutoff_ts := extract(epoch from (now() - p_retention))::bigint;
FOR v_partition IN
SELECT
child.relname AS partition_name
child.relname AS partition_name,
n.nspname AS partition_schema
FROM pg_inherits
JOIN pg_class parent ON pg_inherits.inhparent = parent.oid
JOIN pg_class child ON pg_inherits.inhrelid = child.oid
JOIN pg_namespace n ON child.relnamespace = n.oid
WHERE parent.relname = p_parent_table
LOOP
-- Parse partition suffix to determine age
@@ -85,14 +95,14 @@ BEGIN
-- To be safe, adding 1 month to check vs cutoff.
IF extract(epoch from (v_partition_date + '1 month'::interval)) < v_cutoff_ts THEN
RAISE NOTICE 'Dropping old partition %', v_partition.partition_name;
EXECUTE format('DROP TABLE public.%I', v_partition.partition_name);
EXECUTE format('DROP TABLE %I.%I', v_partition.partition_schema, v_partition.partition_name);
COMMIT; -- Release lock immediately
END IF;
ELSIF length(v_suffix) = 8 THEN -- YYYYMMDD
v_partition_date := to_timestamp(v_suffix, 'YYYYMMDD') AT TIME ZONE 'UTC';
IF extract(epoch from (v_partition_date + '1 day'::interval)) < v_cutoff_ts THEN
RAISE NOTICE 'Dropping old partition %', v_partition.partition_name;
EXECUTE format('DROP TABLE public.%I', v_partition.partition_name);
EXECUTE format('DROP TABLE %I.%I', v_partition.partition_schema, v_partition.partition_name);
COMMIT; -- Release lock immediately
END IF;
END IF;