chore: add database log

core/db/db.go

@@ -44,9 +44,7 @@ func (s *DB) Session(meter float64) *Session {
 
 // Persist creates or updates a transaction in the database
 func (s *DB) Persist(session interface{}) {
-	s.log.TRACE.Printf("store: %+v", session)
-
 	if err := s.db.Save(session).Error; err != nil {
-		s.log.ERROR.Printf("store: %v", err)
+		s.log.ERROR.Printf("persist: %v", err)
 	}
 }

server/db/db.go

@@ -6,6 +6,7 @@ import (
 	"path/filepath"
 	"strings"
 
+	"github.com/evcc-io/evcc/util"
 	"github.com/glebarez/sqlite"
 	"github.com/mitchellh/go-homedir"
 	"gorm.io/gorm"
@@ -34,7 +35,9 @@ func New(driver, dsn string) (*gorm.DB, error) {
 		return nil, fmt.Errorf("invalid database type: %s not in [sqlite]", driver)
 	}
 
-	return gorm.Open(dialect, &gorm.Config{})
+	return gorm.Open(dialect, &gorm.Config{
+		Logger: &Logger{util.NewLogger("db")},
+	})
 }
 
 func NewInstance(driver, dsn string) (err error) {

server/db/log.go

@@ -0,0 +1,34 @@
+package db
+
+import (
+	"context"
+	"time"
+
+	"github.com/evcc-io/evcc/util"
+	"gorm.io/gorm/logger"
+)
+
+type Logger struct {
+	log *util.Logger
+}
+
+func (l *Logger) LogMode(logger.LogLevel) logger.Interface {
+	return l
+}
+
+func (l *Logger) Info(_ context.Context, msg string, val ...interface{}) {
+	l.log.INFO.Printf(msg, val...)
+}
+
+func (l *Logger) Warn(_ context.Context, msg string, val ...interface{}) {
+	l.log.WARN.Printf(msg, val...)
+}
+
+func (l *Logger) Error(_ context.Context, msg string, val ...interface{}) {
+	l.log.ERROR.Printf(msg, val...)
+}
+
+func (l *Logger) Trace(_ context.Context, begin time.Time, fc func() (sql string, rowsAffected int64), err error) {
+	sql, rows := fc()
+	l.log.TRACE.Println(sql, rows, err)
+}