using raven-go properly

errors.go

// trace generates raven traceback
func trace() *raven.Stacktrace {
	return raven.NewStacktrace(0, 3, []string{"myproject"})
}

// HandleError handles error like logging, mail notification.
func HandleError(err error) {
	packet := &raven.Packet{Message: err.Error(), Interfaces: []raven.Interface{raven.NewException(err, trace())}}
	// here we use Sentry instance created once in config instead of instantiating it every time
	config.Config.Sentry.Client.Capture(packet, nil)
}