prometheus/postgres_exporter
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WIP: Add prelim multi-target support

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- Remove multi server support from new collector package
- Add http handler for multi-target support

Signed-off-by: Joe Adams <github@joeadams.io>
This commit is contained in:
Joe Adams
2022-02-25 11:45:15 -05:00
parent 58cc383e8c
commit 713461df98
8 changed files with 239 additions and 171 deletions
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11
collector/pg_database.go
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@ -15,6 +15,7 @@ package collector
import (
"context"
"database/sql"
"github.com/go-kit/log"
"github.com/prometheus/client_golang/prometheus"
@ -36,15 +37,11 @@ var pgDatabase = map[string]*prometheus.Desc{
"size_bytes": prometheus.NewDesc(
"pg_database_size_bytes",
"Disk space used by the database",
[]string{"datname", "server"}, nil,
[]string{"datname"}, nil,
),
}
func (PGDatabaseCollector) Update(ctx context.Context, server *server, ch chan<- prometheus.Metric) error {
db, err := server.GetDB()
if err != nil {
return err
}
func (PGDatabaseCollector) Update(ctx context.Context, db *sql.DB, ch chan<- prometheus.Metric) error {
rows, err := db.QueryContext(ctx,
`SELECT pg_database.datname
,pg_database_size(pg_database.datname)
@ -63,7 +60,7 @@ func (PGDatabaseCollector) Update(ctx context.Context, server *server, ch chan<-
ch <- prometheus.MustNewConstMetric(
pgDatabase["size_bytes"],
prometheus.GaugeValue, float64(size), datname, server.GetName(),
prometheus.GaugeValue, float64(size), datname,
)
}
if err := rows.Err(); err != nil {