fix: improve log support

Signed-off-by: closetool <[email protected]>

adapter.go

@@ -26,9 +26,11 @@ import (
 	"github.com/jackc/pgconn"
 	"gorm.io/driver/mysql"
 	"gorm.io/driver/postgres"
+
 	//"gorm.io/driver/sqlite"
 	"gorm.io/driver/sqlserver"
 	"gorm.io/gorm"
+	"gorm.io/gorm/logger"
 )
 
 const (
@@ -278,6 +280,11 @@ func (a *Adapter) open() error {
 	return a.createTable()
 }
 
+// AddLogger adds logger to db
+func (a *Adapter) AddLogger(l logger.Interface) {
+	a.db = a.db.Session(&gorm.Session{Logger: l, Context: a.db.Statement.Context})
+}
+
 func (a *Adapter) close() error {
 	a.db = nil
 	return nil

adapter_test.go

@@ -16,6 +16,7 @@ package gormadapter
 
 import (
 	"log"
+	"os"
 	"testing"
 
 	"github.com/casbin/casbin/v2"
@@ -27,6 +28,7 @@ import (
 	"gorm.io/driver/mysql"
 	"gorm.io/driver/postgres"
 	"gorm.io/gorm"
+	"gorm.io/gorm/logger"
 )
 
 func testGetPolicy(t *testing.T, e *casbin.Enforcer, res [][]string) {
@@ -428,7 +430,19 @@ func TestAdapters(t *testing.T) {
 	testUpdatePolicies(t, a)
 	testUpdateFilteredPolicies(t, a)
 
+	a = initAdapter(t, "mysql", "root:@tcp(127.0.0.1:3306)/", "casbin", "casbin_rule")
+	a.AddLogger(logger.New(log.New(os.Stdout, "\r\n", log.LstdFlags), logger.Config{}))
+	testUpdatePolicy(t, a)
+	testUpdatePolicies(t, a)
+	testUpdateFilteredPolicies(t, a)
+
+	a = initAdapter(t, "postgres", "user=postgres password=postgres host=127.0.0.1 port=5432 sslmode=disable")
+	testUpdatePolicy(t, a)
+	testUpdatePolicies(t, a)
+	testUpdateFilteredPolicies(t, a)
+
 	a = initAdapter(t, "postgres", "user=postgres password=postgres host=127.0.0.1 port=5432 sslmode=disable")
+	a.AddLogger(logger.New(log.New(os.Stdout, "\r\n", log.LstdFlags), logger.Config{}))
 	testUpdatePolicy(t, a)
 	testUpdatePolicies(t, a)
 	testUpdateFilteredPolicies(t, a)