Using mem node

mem node

Using the mem node standalone with predefined data as a lookup table.

def default_map = 
    '{"key1":"topic/1/new", "key2":"topic/2/new", "key3":"topic/3/new"}'

%% setup the mem node with the json-map, we can reference this map later in lambda expressions with
%% the key `topic_lookup`
|mem() 
.key('topic_lookup')
.default(default_map)
.default_json()