I have a spring cloud stream app chaining together some functions. I need a nice way to log time taken for each function without having to wrap the logic for each in log and timing statements. I can do it if I write the function as an anonymous inner class and annotate the apply method but its a bit ugly

spring: cloud: function: definition: f1|f2|f3

@Bean
public Function<Message<String>, Message<String>> f1(){
  return f -> {
        do stuff
         return f;
    };
 }

public Function<Message<String>, Message<String>> f1(){
  return new Function<Message<String>, Message<String>>(){
    @LogTiming(name = f1)
    public Message<String> apply(Message<String> msg){  

 }

Any tips/examples would be great