Move queries from queries.yaml to collectors (#801)

Signed-off-by: Ben Kochie <superq@gmail.com>
2025-07-30 09:43:10 +03:00 · 2023-06-08 14:28:04 -07:00
parent 16430fc955
commit fe960c6b54
22 changed files with 1690 additions and 279 deletions
--- a/collector/pg_statio_user_tables.go
+++ b/collector/pg_statio_user_tables.go
@ -0,0 +1,182 @@
+// Copyright 2023 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package collector
+
+import (
+	"context"
+	"database/sql"
+
+	"github.com/go-kit/log"
+	"github.com/prometheus/client_golang/prometheus"
+)
+
+func init() {
+	registerCollector("statio_user_tables", defaultEnabled, NewPGStatIOUserTablesCollector)
+}
+
+type PGStatIOUserTablesCollector struct {
+	log log.Logger
+}
+
+const statioUserTableSubsystem = "statio_user_tables"
+
+func NewPGStatIOUserTablesCollector(config collectorConfig) (Collector, error) {
+	return &PGStatIOUserTablesCollector{log: config.logger}, nil
+}
+
+var (
+	statioUserTablesHeapBlksRead = prometheus.NewDesc(
+		prometheus.BuildFQName(namespace, statioUserTableSubsystem, "heap_blocks_read"),
+		"Number of disk blocks read from this table",
+		[]string{"datname", "schemaname", "relname"},
+		prometheus.Labels{},
+	)
+	statioUserTablesHeapBlksHit = prometheus.NewDesc(
+		prometheus.BuildFQName(namespace, statioUserTableSubsystem, "heap_blocks_hit"),
+		"Number of buffer hits in this table",
+		[]string{"datname", "schemaname", "relname"},
+		prometheus.Labels{},
+	)
+	statioUserTablesIdxBlksRead = prometheus.NewDesc(
+		prometheus.BuildFQName(namespace, statioUserTableSubsystem, "idx_blocks_read"),
+		"Number of disk blocks read from all indexes on this table",
+		[]string{"datname", "schemaname", "relname"},
+		prometheus.Labels{},
+	)
+	statioUserTablesIdxBlksHit = prometheus.NewDesc(
+		prometheus.BuildFQName(namespace, statioUserTableSubsystem, "idx_blocks_hit"),
+		"Number of buffer hits in all indexes on this table",
+		[]string{"datname", "schemaname", "relname"},
+		prometheus.Labels{},
+	)
+	statioUserTablesToastBlksRead = prometheus.NewDesc(
+		prometheus.BuildFQName(namespace, statioUserTableSubsystem, "toast_blocks_read"),
+		"Number of disk blocks read from this table's TOAST table (if any)",
+		[]string{"datname", "schemaname", "relname"},
+		prometheus.Labels{},
+	)
+	statioUserTablesToastBlksHit = prometheus.NewDesc(
+		prometheus.BuildFQName(namespace, statioUserTableSubsystem, "toast_blocks_hit"),
+		"Number of buffer hits in this table's TOAST table (if any)",
+		[]string{"datname", "schemaname", "relname"},
+		prometheus.Labels{},
+	)
+	statioUserTablesTidxBlksRead = prometheus.NewDesc(
+		prometheus.BuildFQName(namespace, statioUserTableSubsystem, "tidx_blocks_read"),
+		"Number of disk blocks read from this table's TOAST table indexes (if any)",
+		[]string{"datname", "schemaname", "relname"},
+		prometheus.Labels{},
+	)
+	statioUserTablesTidxBlksHit = prometheus.NewDesc(
+		prometheus.BuildFQName(namespace, statioUserTableSubsystem, "tidx_blocks_hit"),
+		"Number of buffer hits in this table's TOAST table indexes (if any)",
+		[]string{"datname", "schemaname", "relname"},
+		prometheus.Labels{},
+	)
+
+	statioUserTablesQuery = `SELECT
+		current_database() datname,
+		schemaname,
+		relname,
+		heap_blks_read,
+		heap_blks_hit,
+		idx_blks_read,
+		idx_blks_hit,
+		toast_blks_read,
+		toast_blks_hit,
+		tidx_blks_read,
+		tidx_blks_hit
+	FROM pg_statio_user_tables`
+)
+
+func (PGStatIOUserTablesCollector) Update(ctx context.Context, db *sql.DB, ch chan<- prometheus.Metric) error {
+	rows, err := db.QueryContext(ctx,
+		statioUserTablesQuery)
+
+	if err != nil {
+		return err
+	}
+	defer rows.Close()
+
+	for rows.Next() {
+		var datname string
+		var schemaname string
+		var relname string
+		var heapBlksRead int64
+		var heapBlksHit int64
+		var idxBlksRead int64
+		var idxBlksHit int64
+		var toastBlksRead int64
+		var toastBlksHit int64
+		var tidxBlksRead int64
+		var tidxBlksHit int64
+
+		if err := rows.Scan(&datname, &schemaname, &relname, &heapBlksRead, &heapBlksHit, &idxBlksRead, &idxBlksHit, &toastBlksRead, &toastBlksHit, &tidxBlksRead, &tidxBlksHit); err != nil {
+			return err
+		}
+
+		ch <- prometheus.MustNewConstMetric(
+			statioUserTablesHeapBlksRead,
+			prometheus.CounterValue,
+			float64(heapBlksRead),
+			datname, schemaname, relname,
+		)
+		ch <- prometheus.MustNewConstMetric(
+			statioUserTablesHeapBlksHit,
+			prometheus.CounterValue,
+			float64(heapBlksHit),
+			datname, schemaname, relname,
+		)
+		ch <- prometheus.MustNewConstMetric(
+			statioUserTablesIdxBlksRead,
+			prometheus.CounterValue,
+			float64(idxBlksRead),
+			datname, schemaname, relname,
+		)
+		ch <- prometheus.MustNewConstMetric(
+			statioUserTablesIdxBlksHit,
+			prometheus.CounterValue,
+			float64(idxBlksHit),
+			datname, schemaname, relname,
+		)
+		ch <- prometheus.MustNewConstMetric(
+			statioUserTablesToastBlksRead,
+			prometheus.CounterValue,
+			float64(toastBlksRead),
+			datname, schemaname, relname,
+		)
+		ch <- prometheus.MustNewConstMetric(
+			statioUserTablesToastBlksHit,
+			prometheus.CounterValue,
+			float64(toastBlksHit),
+			datname, schemaname, relname,
+		)
+		ch <- prometheus.MustNewConstMetric(
+			statioUserTablesTidxBlksRead,
+			prometheus.CounterValue,
+			float64(tidxBlksRead),
+			datname, schemaname, relname,
+		)
+		ch <- prometheus.MustNewConstMetric(
+			statioUserTablesTidxBlksHit,
+			prometheus.CounterValue,
+			float64(tidxBlksHit),
+			datname, schemaname, relname,
+		)
+	}
+	if err := rows.Err(); err != nil {
+		return err
+	}
+	return nil
+}