264 lines
6.7 KiB
MySQL
264 lines
6.7 KiB
MySQL
/* contrib/pg_stat_monitor/pg_stat_monitor--1.1.sql */
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-- complain if script is sourced in psql, rather than via CREATE EXTENSION
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\echo Use "CREATE EXTENSION pg_stat_monitor" to load this file. \quit
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-- Register functions.
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CREATE FUNCTION pg_stat_monitor_reset()
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RETURNS void
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AS 'MODULE_PATHNAME'
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LANGUAGE C PARALLEL SAFE;
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CREATE FUNCTION pg_stat_monitor_version()
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RETURNS text
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AS 'MODULE_PATHNAME'
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LANGUAGE C PARALLEL SAFE;
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CREATE FUNCTION get_histogram_timings()
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RETURNS text
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AS 'MODULE_PATHNAME'
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LANGUAGE C PARALLEL SAFE;
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CREATE FUNCTION range()
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RETURNS text[] AS $$
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SELECT string_to_array(get_histogram_timings(), ',');
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$$ LANGUAGE SQL;
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CREATE FUNCTION pg_stat_monitor_internal(IN showtext boolean,
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OUT bucket int8, -- 0
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OUT userid oid,
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OUT dbid oid,
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OUT client_ip int8,
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OUT queryid text, -- 4
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OUT planid text,
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OUT query text,
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OUT query_plan text,
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OUT state_code int8,
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OUT top_queryid text,
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OUT top_query text,
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OUT application_name text,
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OUT relations text, -- 11
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OUT cmd_type int,
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OUT elevel int,
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OUT sqlcode TEXT,
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OUT message text,
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OUT bucket_start_time text,
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OUT calls int8, -- 16
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OUT total_exec_time float8,
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OUT min_exec_time float8,
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OUT max_exec_time float8,
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OUT mean_exec_time float8,
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OUT stddev_exec_time float8,
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OUT rows_retrieved int8,
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OUT plans_calls int8, -- 23
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OUT total_plan_time float8,
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OUT min_plan_time float8,
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OUT max_plan_time float8,
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OUT mean_plan_time float8,
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OUT stddev_plan_time float8,
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OUT shared_blks_hit int8, -- 29
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OUT shared_blks_read int8,
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OUT shared_blks_dirtied int8,
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OUT shared_blks_written int8,
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OUT local_blks_hit int8,
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OUT local_blks_read int8,
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OUT local_blks_dirtied int8,
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OUT local_blks_written int8,
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OUT temp_blks_read int8,
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OUT temp_blks_written int8,
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OUT blk_read_time float8,
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OUT blk_write_time float8,
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OUT resp_calls text, -- 41
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OUT cpu_user_time float8,
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OUT cpu_sys_time float8,
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OUT wal_records int8,
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OUT wal_fpi int8,
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OUT wal_bytes numeric,
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OUT comments TEXT,
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OUT toplevel BOOLEAN
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)
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RETURNS SETOF record
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AS 'MODULE_PATHNAME', 'pg_stat_monitor'
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LANGUAGE C STRICT VOLATILE PARALLEL SAFE;
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CREATE OR REPLACE FUNCTION get_state(state_code int8) RETURNS TEXT AS
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$$
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SELECT
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CASE
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WHEN state_code = 0 THEN 'PARSING'
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WHEN state_code = 1 THEN 'PLANNING'
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WHEN state_code = 2 THEN 'ACTIVE'
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WHEN state_code = 3 THEN 'FINISHED'
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WHEN state_code = 4 THEN 'FINISHED WITH ERROR'
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END
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$$
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LANGUAGE SQL PARALLEL SAFE;
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CREATE or REPLACE FUNCTION get_cmd_type (cmd_type INTEGER) RETURNS TEXT AS
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$$
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SELECT
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CASE
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WHEN cmd_type = 0 THEN ''
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WHEN cmd_type = 1 THEN 'SELECT'
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WHEN cmd_type = 2 THEN 'UPDATE'
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WHEN cmd_type = 3 THEN 'INSERT'
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WHEN cmd_type = 4 THEN 'DELETE'
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WHEN cmd_type = 5 THEN 'UTILITY'
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WHEN cmd_type = 6 THEN 'NOTHING'
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END
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$$
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LANGUAGE SQL PARALLEL SAFE;
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CREATE FUNCTION pg_stat_monitor_settings(
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OUT name text,
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OUT value INTEGER,
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OUT default_value INTEGER,
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OUT description text,
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OUT minimum INTEGER,
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OUT maximum INTEGER,
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OUT restart INTEGER
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)
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RETURNS SETOF record
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AS 'MODULE_PATHNAME', 'pg_stat_monitor_settings'
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LANGUAGE C STRICT VOLATILE PARALLEL SAFE;
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CREATE VIEW pg_stat_monitor_settings AS SELECT
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name,
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value,
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default_value,
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description,
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minimum,
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maximum,
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restart
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FROM pg_stat_monitor_settings();
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-- Register a view on the function for ease of use.
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CREATE VIEW pg_stat_monitor AS SELECT
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bucket,
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bucket_start_time AS bucket_start_time,
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userid::regrole,
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datname,
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'0.0.0.0'::inet + client_ip AS client_ip,
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queryid,
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top_queryid,
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query,
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comments,
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planid,
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query_plan,
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top_query,
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application_name,
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string_to_array(relations, ',') AS relations,
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cmd_type,
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get_cmd_type(cmd_type) AS cmd_type_text,
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elevel,
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sqlcode,
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message,
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calls,
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total_exec_time,
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min_exec_time,
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max_exec_time,
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mean_exec_time,
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stddev_exec_time,
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rows_retrieved,
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plans_calls,
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total_plan_time,
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min_plan_time,
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max_plan_time,
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mean_plan_time,
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stddev_plan_time,
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shared_blks_hit,
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shared_blks_read,
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shared_blks_dirtied,
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shared_blks_written,
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local_blks_hit,
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local_blks_read,
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local_blks_dirtied,
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local_blks_written,
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temp_blks_read,
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temp_blks_written,
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blk_read_time,
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blk_write_time,
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(string_to_array(resp_calls, ',')) resp_calls,
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cpu_user_time,
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cpu_sys_time,
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wal_records,
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wal_fpi,
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wal_bytes,
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state_code,
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get_state(state_code) as state
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FROM pg_stat_monitor_internal(TRUE) p, pg_database d WHERE dbid = oid
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ORDER BY bucket_start_time;
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CREATE FUNCTION decode_error_level(elevel int)
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RETURNS text
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AS
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$$
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SELECT
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CASE
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WHEN elevel = 0 THEN ''
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WHEN elevel = 10 THEN 'DEBUG5'
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WHEN elevel = 11 THEN 'DEBUG4'
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WHEN elevel = 12 THEN 'DEBUG3'
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WHEN elevel = 13 THEN 'DEBUG2'
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WHEN elevel = 14 THEN 'DEBUG1'
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WHEN elevel = 15 THEN 'LOG'
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WHEN elevel = 16 THEN 'LOG_SERVER_ONLY'
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WHEN elevel = 17 THEN 'INFO'
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WHEN elevel = 18 THEN 'NOTICE'
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WHEN elevel = 19 THEN 'WARNING'
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WHEN elevel = 20 THEN 'ERROR'
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END
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$$
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LANGUAGE SQL PARALLEL SAFE;
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CREATE OR REPLACE FUNCTION histogram(_bucket int, _quryid text)
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RETURNS SETOF RECORD AS $$
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DECLARE
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rec record;
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BEGIN
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for rec in
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with stat as (select queryid, bucket, unnest(range()) as range, unnest(resp_calls)::int freq from pg_stat_monitor) select range, freq, repeat('■', (freq::float / max(freq) over() * 30)::int) as bar from stat where queryid = _quryid and bucket = _bucket
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loop
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return next rec;
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end loop;
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END
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$$ language plpgsql;
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CREATE FUNCTION pg_stat_monitor_hook_stats(
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OUT hook text,
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OUT min_time float8,
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OUT max_time float8,
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OUT total_time float8,
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OUT ncalls int8
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)
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RETURNS SETOF record
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AS 'MODULE_PATHNAME', 'pg_stat_monitor_hook_stats'
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LANGUAGE C STRICT VOLATILE PARALLEL SAFE;
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CREATE VIEW pg_stat_monitor_hook_stats AS SELECT
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hook,
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min_time,
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max_time,
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total_time,
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total_time / greatest(ncalls, 1) as avg_time,
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ncalls,
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ROUND(CAST(total_time / greatest(sum(total_time) OVER(), 0.00000001) * 100 as numeric), 2)::text || '%' as load_comparison
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FROM pg_stat_monitor_hook_stats();
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GRANT SELECT ON pg_stat_monitor TO PUBLIC;
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GRANT SELECT ON pg_stat_monitor_settings TO PUBLIC;
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-- Don't want this to be available to non-superusers.
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REVOKE ALL ON FUNCTION pg_stat_monitor_reset() FROM PUBLIC;
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