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PMM-13697 postgres exporter changes for transaction duration to determine stage… #293

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PMM-13697 postgres exporter changes for transaction duration to determine stage… #293

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2f156dd
postgres exporter changes for transaction duration to determine stage…
Feb 5, 2025
6ff01c2
PMM-13697 fix indentation.
BupycHuk Feb 5, 2025
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13 changes: 7 additions & 6 deletions cmd/postgres_exporter/postgres_exporter.go
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Original file line number Diff line number Diff line change
Expand Up @@ -258,12 +258,13 @@ var builtinMetricMaps = map[string]intermediateMetricMap{
},
"pg_stat_activity": {
map[string]ColumnMapping{
"datname": {LABEL, "Name of this database", nil, nil},
"state": {LABEL, "connection state", nil, semver.MustParseRange(">=9.2.0")},
"usename": {LABEL, "Name of the user logged into this backend", nil, nil},
"application_name": {LABEL, "Name of the application that is connected to this backend", nil, nil},
"count": {GAUGE, "number of connections in this state", nil, nil},
"max_tx_duration": {GAUGE, "max duration in seconds any active transaction has been running", nil, nil},
"datname": {LABEL, "Name of this database", nil, nil},
"state": {LABEL, "connection state", nil, semver.MustParseRange(">=9.2.0")},
"usename": {LABEL, "Name of the user logged into this backend", nil, nil},
"application_name": {LABEL, "Name of the application that is connected to this backend", nil, nil},
"count": {GAUGE, "number of connections in this state", nil, nil},
"max_tx_duration": {GAUGE, "max duration in seconds any active transaction has been running", nil, nil},
"max_state_duration": {GAUGE, "max state change duration in seconds any active transaction has been", nil, nil},
},
true,
0,
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9 changes: 6 additions & 3 deletions cmd/postgres_exporter/queries.go
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Original file line number Diff line number Diff line change
Expand Up @@ -131,7 +131,8 @@ var queryOverrides = map[string][]OverrideQuery{
tmp2.usename,
tmp2.application_name,
COALESCE(count,0) as count,
COALESCE(max_tx_duration,0) as max_tx_duration
COALESCE(max_tx_duration,0) as max_tx_duration,
COALESCE(max_state_duration, 0) AS max_state_duration
FROM
(
VALUES ('active'),
Expand All @@ -149,7 +150,8 @@ var queryOverrides = map[string][]OverrideQuery{
usename,
application_name,
count(*) AS count,
MAX(EXTRACT(EPOCH FROM now() - xact_start))::float AS max_tx_duration
MAX(EXTRACT(EPOCH FROM now() - xact_start))::float AS max_tx_duration,
MAX(EXTRACT(EPOCH FROM now() - state_change))::float AS max_state_duration
FROM pg_stat_activity GROUP BY datname,state,usename,application_name) AS tmp2
ON tmp.state = tmp2.state AND pg_database.datname = tmp2.datname
`,
Expand All @@ -163,7 +165,8 @@ var queryOverrides = map[string][]OverrideQuery{
usename,
application_name,
COALESCE(count(*),0) AS count,
COALESCE(MAX(EXTRACT(EPOCH FROM now() - xact_start))::float,0) AS max_tx_duration
COALESCE(MAX(EXTRACT(EPOCH FROM now() - xact_start))::float,0) AS max_tx_duration,
COALESCE(MAX(EXTRACT(EPOCH FROM now() - state_change))::float,0) AS max_state_duration
FROM pg_stat_activity GROUP BY datname,usename,application_name
`,
},
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