63 lines
1.9 KiB
Go
63 lines
1.9 KiB
Go
package db
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import (
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"context"
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"codeberg.org/u1f320/pronouns.cc/backend/log"
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"emperror.dev/errors"
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"github.com/prometheus/client_golang/prometheus"
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"github.com/prometheus/client_golang/prometheus/promauto"
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)
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func (db *DB) initMetrics() (err error) {
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err = prometheus.Register(prometheus.NewGaugeFunc(prometheus.GaugeOpts{
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Name: "pronouns_users_total",
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Help: "The total number of registered users",
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}, func() float64 {
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count, err := db.TotalUserCount(context.Background())
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if err != nil {
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log.Errorf("getting user count for metrics: %v", err)
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}
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return float64(count)
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}))
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if err != nil {
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return errors.Wrap(err, "registering user count gauge")
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}
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err = prometheus.Register(prometheus.NewGaugeFunc(prometheus.GaugeOpts{
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Name: "pronouns_members_total",
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Help: "The total number of registered members",
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}, func() float64 {
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count, err := db.TotalMemberCount(context.Background())
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if err != nil {
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log.Errorf("getting member count for metrics: %v", err)
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}
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return float64(count)
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}))
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if err != nil {
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return errors.Wrap(err, "registering member count gauge")
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}
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db.TotalRequests = promauto.NewCounter(prometheus.CounterOpts{
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Name: "pronouns_api_requests_total",
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Help: "The total number of API requests since the last restart",
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})
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return nil
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}
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func (db *DB) TotalUserCount(ctx context.Context) (numUsers int64, err error) {
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err = db.QueryRow(ctx, "SELECT COUNT(*) FROM users WHERE deleted_at IS NULL").Scan(&numUsers)
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if err != nil {
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return 0, errors.Wrap(err, "querying user count")
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}
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return numUsers, nil
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}
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func (db *DB) TotalMemberCount(ctx context.Context) (numMembers int64, err error) {
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err = db.QueryRow(ctx, "SELECT COUNT(*) FROM members WHERE unlisted = false AND user_id = ANY(SELECT id FROM users WHERE deleted_at IS NULL)").Scan(&numMembers)
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if err != nil {
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return 0, errors.Wrap(err, "querying member count")
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}
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return numMembers, nil
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}
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