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Signed-off-by: Zachary Caldarola <zmc2005@gmail.com>
This commit is contained in:
Zachary Caldarola 2023-01-28 17:05:45 -05:00
parent 9b13780d14
commit 600ad185cf
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GPG Key ID: 1422E0B90A2D0CC4
1 changed files with 20 additions and 7 deletions
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27
collector/pg_replication_slots.go → collector/replication_slots.go
View File

@ -44,16 +44,22 @@ var pgReplicationSlot = map[string]*prometheus.Desc{
"last lsn confirmed flushed to the replication slot", "last lsn confirmed flushed to the replication slot",
[]string{"slot_name"}, nil, []string{"slot_name"}, nil,
), ),
"is_active": prometheus.NewDesc(
"pg_replication_slot_is_active",
"last lsn confirmed flushed to the replication slot",
[]string{"slot_name"}, nil,
),
} }
func (PGReplicationSlotCollector) Update(ctx context.Context, db *sql.DB, ch chan<- prometheus.Metric) error { func (PGReplicationSlotCollector) Update(ctx context.Context, db *sql.DB, ch chan<- prometheus.Metric) error {
rows, err := db.QueryContext(ctx, rows, err := db.QueryContext(ctx,
`SELECT `SELECT
slot_name, slot_name,
pg_current_wal_lsn() AS current_wal_lsn, pg_current_wal_lsn() - '0/0' AS current_wal_lsn,
confirmed_flush_lsn coalesce(confirmed_flush_lsn, '0/0') - '0/0',
FROM active
pg_replication_slots;`) FROM
pg_replication_slots;`)
if err != nil { if err != nil {
return err return err
} }
@ -63,7 +69,8 @@ func (PGReplicationSlotCollector) Update(ctx context.Context, db *sql.DB, ch cha
var slot_name string var slot_name string
var wal_lsn int64 var wal_lsn int64
var flush_lsn int64 var flush_lsn int64
if err := rows.Scan(&slot_name, &wal_lsn, &flush_lsn); err != nil { var is_active int
if err := rows.Scan(&slot_name, &wal_lsn, &flush_lsn, &is_active); err != nil {
return err return err
} }
@ -71,9 +78,15 @@ func (PGReplicationSlotCollector) Update(ctx context.Context, db *sql.DB, ch cha
pgReplicationSlot["current_wal_lsn"], pgReplicationSlot["current_wal_lsn"],
prometheus.GaugeValue, float64(wal_lsn), slot_name, prometheus.GaugeValue, float64(wal_lsn), slot_name,
) )
if (is_active == 1) {
ch <- prometheus.MustNewConstMetric(
pgReplicationSlot["confirmed_flush_lsn"],
prometheus.GaugeValue, float64(flush_lsn), slot_name,
)
}
ch <- prometheus.MustNewConstMetric( ch <- prometheus.MustNewConstMetric(
pgReplicationSlot["confirmed_flush_lsn"], pgReplicationSlot["is_active"],
prometheus.GaugeValue, float64(flush_lsn), slot_name, prometheus.GaugeValue, int(flush_lsn), slot_name,
) )
} }
if err := rows.Err(); err != nil { if err := rows.Err(); err != nil {