feat: add log writer for gorm and add New func for log (#155)

* feat: add logger writer for gorm

* feat: fix check cond

* feat: add New func for creating a custom logger

* docs: update changelog

CHANGELOG.md

@@ -4,6 +4,7 @@
 
 - feat: support async flush log to disk
 - feat: add re-entry and automatic renewal for redis lock
+- feat: add gorm logger
 - chore: using gorm offical plguin for tracing and metrics
 
 ## v1.9.0

pkg/log/logger.go

@@ -49,7 +49,7 @@ func loadConf() (ret *Config, err error) {
 	return &cfg, nil
 }
 
-// Init init log
+// Init init log and return a global logger
 func Init(opts ...Option) Logger {
 	var err error
 	cfg, err := loadConf()
@@ -72,6 +72,22 @@ func Init(opts ...Option) Logger {
 	return log
 }
 
+// New create a customer logger
+func New(opts ...Option) Logger {
+	var err error
+	cfg, err := loadConf()
+	if err != nil {
+		panic(fmt.Sprintf("log: New load logger conf err: %v", err))
+	}
+
+	l, err := newLoggerWithCallerSkip(cfg, 1, opts...)
+	if err != nil {
+		_ = fmt.Errorf("log: New newLoggerWithCallerSkip err: %v", err)
+	}
+
+	return l
+}
+
 // GetLogger return a log
 func GetLogger() Logger {
 	return log

pkg/storage/orm/log_writer.go

@@ -0,0 +1,22 @@
+package orm
+
+import (
+	"fmt"
+
+	"github.com/go-eagle/eagle/pkg/log"
+	"gorm.io/gorm/logger"
+)
+
+type LoggerWriter struct {
+	log log.Logger
+}
+
+func NewLogWriter(log log.Logger) logger.Writer {
+	return &LoggerWriter{
+		log: log,
+	}
+}
+
+func (l *LoggerWriter) Printf(s string, v ...interface{}) {
+	l.log.Info(fmt.Sprintf(s, v...))
+}

pkg/storage/orm/orm.go

@@ -35,6 +35,8 @@ var (
 	DBMap = make(map[string]*gorm.DB)
 	// DBLock database locker
 	DBLock sync.Mutex
+	// logWriter log writer
+	LogWriter logger.Writer
 )
 
 // Config database config
@@ -239,9 +241,17 @@ func gormConfig(c *Config) *gorm.Config {
 	}
 	// 只打印慢查询
 	if c.SlowThreshold > 0 {
+		var writer logger.Writer
+		//将标准输出作为Writer
+		writer = log.New(os.Stdout, "\r\n", log.LstdFlags)
+		// use custom logger
+		if LogWriter != nil {
+			writer = LogWriter
+		}
+
+		// new logger with writer
 		config.Logger = logger.New(
-			//将标准输出作为Writer
-			log.New(os.Stdout, "\r\n", log.LstdFlags),
+			writer,
 			logger.Config{
 				//设定慢查询时间阈值
 				SlowThreshold: c.SlowThreshold, // nolint: golint