What happened:

Consider this code:

logger := log.With(log.NewStdLogger(os.Stdout),
	"caller", log.DefaultCaller,
)

helper := log.NewHelper(logger)
helper.Info("foo")

srv := http.NewServer(
	http.Address(":9090"),
	http.Middleware(logging.Server(logger)),
)

helper.Info's caller field report where the helper.Info called (e.g. main.go:10). But logger in logger.Server is not.

What you expected to happen:

logger.Server's caller path "level" should same as "helper.Log"

How to reproduce it (as minimally and precisely as possible):

Please refer this repo.

Anything else we need to know?:

这绝对不是调一下 caller 层数或添加自定义 calller 逻辑（比如 for 循环匹配第一个不是 kratos 的目录）能解决的问题。

Environment:

• Kratos version (use kratos -v): v2.7.2
• Go version (use go version): 1.21.5
• OS (e.g: cat /etc/os-release): -
• Others: -