func()

in plugins/mux/match_interceptor.go [34:73]

• 32 lines of code
• 15 McCabe index (conditional complexity)

func (n *MatchInterceptor) AfterInvoke(invocation operator.Invocation, results ...interface{}) error {
	// only process with matched route
	if matched, ok := results[0].(bool); !ok || !matched {
		return nil
	}
	match, ok := invocation.Args()[1].(*RouteMatch)
	req := invocation.Args()[0].(*http.Request)
	if !ok || match == nil || match.Route == nil || req == nil {
		return nil
	}

	span := tracing.ActiveSpan()
	if span == nil {
		return nil
	}

	// find matched template
	var routePrefix, routePath string
	for _, matcher := range match.Route.matchers {
		if regexp, ok := matcher.(*routeRegexp); ok && regexp != nil {
			if regexp.regexpType == 2 {
				routePrefix = regexp.template
			} else if regexp.regexpType == 0 {
				routePath = regexp.template
			}
		}
	}

	opName := routePrefix
	if routePath != "" {
		opName = routePath
	}

	// re-set the operation name if route path/prefix not empty
	if opName != "" {
		span.SetOperationName(req.Method + ":" + opName)
	}

	return nil
}