logger

Overview ¶

INSTRUCTION:

Put the following code in initialize()

logid := GetNextLogID()
StartLogger(logid)

It is possible to add user defined regions for trace by adding:

defer trace.StartRegion(context.Background(), regionName).End()

For example, in order to add it to every handler of http, one can write a wrapper as follows:

handleFunc := func(p goji.Pattern, h func(http.ResponseWriter, *http.Request)) {
	regionName := GetFunctionName(h)
	mux.HandleFunc(p, func(a http.ResponseWriter, b *http.Request) {
		defer trace.StartRegion(context.Background(), regionName).End()
		h(a, b)
	})
}

If you are using echo, the following code works:

func TraceMiddleware(next echo.HandlerFunc) echo.HandlerFunc {
	return func(c echo.Context) error {
		defer trace.StartRegion(c.Request().Context(), c.Request().Method + " " + c.Path()).End()
		return next(c)
	}
}
func main() {
	e := echo.New()
	// ...
	e.Use(TraceMiddleware)
}