diff --git a/contrib/log/aliyun/aliyun.go b/contrib/log/aliyun/aliyun.go
index b45eed74b..46abd7e48 100644
--- a/contrib/log/aliyun/aliyun.go
+++ b/contrib/log/aliyun/aliyun.go
@@ -73,6 +73,10 @@ func WithAccessSecret(as string) Option {
 
 type Option func(alc *options)
 
+func (a *aliyunLog) Close() error {
+	return a.producer.Close(5000)
+}
+
 func (a *aliyunLog) Log(level klog.Level, keyvals ...interface{}) error {
 	buf := level.String()
 	levelTitle := "level"
diff --git a/contrib/log/zap/zap.go b/contrib/log/zap/zap.go
index 8c0918065..411bd1c11 100644
--- a/contrib/log/zap/zap.go
+++ b/contrib/log/zap/zap.go
@@ -46,3 +46,7 @@ func (l *Logger) Log(level log.Level, keyvals ...interface{}) error {
 func (l *Logger) Sync() error {
 	return l.log.Sync()
 }
+
+func (l *Logger) Close() error {
+	return l.log.Sync()
+}
diff --git a/log/global.go b/log/global.go
index 6dbc722a8..f75b07e64 100644
--- a/log/global.go
+++ b/log/global.go
@@ -49,7 +49,7 @@ func Log(level Level, keyvals ...interface{}) {
 
 // Context with context logger.
 func Context(ctx context.Context) *Helper {
-	return NewHelper(WithContext(ctx, global))
+	return NewHelper(WithContext(ctx, global.Logger))
 }
 
 // Debug logs a message at debug level.
diff --git a/log/log.go b/log/log.go
index 264dd8c45..c1fad7703 100644
--- a/log/log.go
+++ b/log/log.go
@@ -43,7 +43,7 @@ func With(l Logger, kv ...interface{}) Logger {
 	kvs = append(kvs, kv...)
 	kvs = append(kvs, c.prefix...)
 	return &logger{
-		logger:    l,
+		logger:    c.logger,
 		prefix:    kvs,
 		hasValuer: containsValuer(kvs),
 		ctx:       c.ctx,
@@ -58,7 +58,7 @@ func WithContext(ctx context.Context, l Logger) Logger {
 		return &logger{logger: l, ctx: ctx}
 	}
 	return &logger{
-		logger:    l,
+		logger:    c.logger,
 		prefix:    c.prefix,
 		hasValuer: c.hasValuer,
 		ctx:       ctx,
diff --git a/log/std.go b/log/std.go
index 8d79f5c53..6f2539816 100644
--- a/log/std.go
+++ b/log/std.go
@@ -45,3 +45,7 @@ func (l *stdLogger) Log(level Level, keyvals ...interface{}) error {
 	l.pool.Put(buf)
 	return nil
 }
+
+func (l *stdLogger) Close() error {
+	return nil
+}
diff --git a/log/value.go b/log/value.go
index 36782f0dd..5aceffeb5 100644
--- a/log/value.go
+++ b/log/value.go
@@ -10,7 +10,7 @@ import (
 
 var (
 	// DefaultCaller is a Valuer that returns the file and line.
-	DefaultCaller = Caller(3)
+	DefaultCaller = Caller(4)
 
 	// DefaultTimestamp is a Valuer that returns the current wallclock time.
 	DefaultTimestamp = Timestamp(time.RFC3339)
@@ -30,20 +30,7 @@ func Value(ctx context.Context, v interface{}) interface{} {
 // Caller returns a Valuer that returns a pkg/file:line description of the caller.
 func Caller(depth int) Valuer {
 	return func(context.Context) interface{} {
-		d := depth
-		_, file, line, _ := runtime.Caller(d)
-		if strings.LastIndex(file, "/log/filter.go") > 0 {
-			d++
-			_, file, line, _ = runtime.Caller(d)
-		}
-		if strings.LastIndex(file, "/log/helper.go") > 0 {
-			d++
-			_, file, line, _ = runtime.Caller(d)
-		}
-		if strings.LastIndex(file, "/log/global.go") > 0 {
-			d++
-			_, file, line, _ = runtime.Caller(d)
-		}
+		_, file, line, _ := runtime.Caller(depth)
 		idx := strings.LastIndexByte(file, '/')
 		return file[idx+1:] + ":" + strconv.Itoa(line)
 	}