Fixed incorrect conversion between integer types (#172)

Co-authored-by: Mikhail Grigorev <grigorev_mm@magnit.ru>

Author: cherts

internal/collector/collector.go

@@ -2,16 +2,15 @@
 package collector
 
 import (
+	"maps"
 	"strconv"
 	"sync"
 
-	"github.com/jackc/pgx/v4"
-
 	"github.com/cherts/pgscv/internal/filter"
 	"github.com/cherts/pgscv/internal/log"
 	"github.com/cherts/pgscv/internal/model"
+	"github.com/jackc/pgx/v4"
 	"github.com/prometheus/client_golang/prometheus"
-	"maps"
 )
 
 // Factories defines collector functions which used for collecting metrics.

internal/collector/config.go

@@ -94,11 +94,11 @@ func newPostgresServiceConfig(connStr string, connTimeout int) (postgresServiceC
 	var setting string
 
 	// Get role connection limit.
-	err = conn.Conn().QueryRow(context.Background(), "SELECT rolconnlimit FROM pg_roles WHERE rolname = user").Scan(&setting)
+	err = conn.Conn().QueryRow(context.Background(), "SELECT rolconnlimit FROM pg_roles WHERE rolname = USER").Scan(&setting)
 	if err != nil {
 		return config, fmt.Errorf("failed to get rolconnlimit setting from pg_roles, %s, please check user grants", err)
 	}
-	rolConnLimit, err := strconv.ParseInt(setting, 10, 64)
+	rolConnLimit, err := strconv.ParseInt(setting, 10, 32)
 	if err != nil {
 		return config, err
 	}