import json
import logging
import os.path

from landscape.lib.fs import read_file


def get_juju_info(config):
"""
Returns the Juju info or C{None} if the path referenced from
L{config} is not a file or that file isn't valid JSON.
"""
juju_filename = config.juju_filename
if not os.path.isfile(juju_filename):
return None
json_contents = read_file(juju_filename)
try:
juju_info = json.loads(json_contents)
except Exception:
logging.exception(
"Error attempting to read JSON from %s" % juju_filename)
return None
else:
if "api-addresses" in juju_info:
juju_info["api-addresses"] = juju_info["api-addresses"].split()
return juju_info