Fact Caching doesn't appear to save all facts

[Adam Copley]

I wrote a custom fact which sits on a server and pulls out an array of supervisord programs:

#!/usr/bin/env python2.7

import os

import sys

import json

# Config to read

supervisord_config = '/etc/supervisord.conf';

# Define the main function

def main():

  file_object = open(supervisord_config, 'r');

  program_list = [];

  for line in file_object:

    if "programs" not in line:

      if "program:" in line:

        programs =  line.split(":")[1];

        programs =  programs.split("]")[0];

        program_list.append(programs);

  print json.dumps(program_list);

# Run the main function

if os.path.exists(supervisord_config):

  main()

else:

  sys.exit(1)

Running the setup module against the server, to be able to access the facts, this the above returns:

"ansible_local": {

            "supervisord_default": [

                "imageprocess",

                "replaceimage",

                "mobile_imageprocess",

                "mobile_replaceimage"

            ],

        },

That is correct and i can manipulate the output within tasks and templates perfectly, however i require one template to utilise facts from other servers and so i wanted to utilise the fact_caching functionality, however the above fact doesnt appear to be stored properly in the cache:

"supervisord_default": {},

That is all that the cache has..

How can i get it so that the cache has the correct data?