Implemented anomaly and exception handle maps

[ElChache]

Anomaly handlers is map of functions indexed by step name that get called with a map {:ctx <ctx> :anomaly <anomaly>} when the step returns an anomaly.

Exception handlers is a map of functions indexed by step name that get called with a map {:ctx <ctx> :exception <exception>} when the step triggers an exception.

Both are given in the configuration map of fonda under :anomaly-handlers and :exception-handlers, and both are optional.

[arichiardi]

Awesome will check that soon

[arichiardi]

I have only one feature request on this feature 😀

Should this handler map have always keyword keys?

Even if the name a string we can convert it to keyword. It is more idiomatic and we can also directly use that keyword that resolves to a function without problems.

What do you think?

[ElChache]

Yes I totally agree to that, strings as keys in the maps didn't feel right. I also think the step names should be allowed to be keywords as well, either strings or keywords. I always write them as keywords and them get an error. That's a different issue tho. I'll implement that tomorrow, now I'm watching Barcelona Man U 😄 ⚽

[arichiardi]

I thought we already allow name to be a string or keyword but I will double check as well

[ElChache]

Yes right now steps must be strings:

(s/def ::name (s/nilable string?))

I think the proper approach would be to always convert the steps names and handler map keys into keywords. Then the user can use strings or keywords indifferently. What do you think?

[arichiardi]

Totally we should do that