Implement custom function for parsing embedded JSON (nested JSON docs) about jmespath HOT 1 CLOSED

from jmespath import functions

class JmesPathSplunkExtraFunctions(functions.Functions):
    @functions.signature({'types': ['string', 'array']})
    def _func_jsonstr(self, s):
        if s is None:
            return None
        if isinstance(s, (list,tuple)):
            return [ json.loads(i) for i in s ]
        try:
            return json.loads(s)
        except:
            return s