#    Copyright (C) 2015 vmware inc.
 #
 #    Author: Sharath George <sharathg@vmware.com>
 
 
 import json
 import collections
 
 class JsonWrapper(object):
 

     def __init__(self, filename):

         self.filename = filename

         self.data = None

     def read(self):

         try:
             with open(self.filename) as json_data:
                 self.data = json.load(json_data, object_pairs_hook=collections.OrderedDict)
         except Exception as _:
             raise Exception("Unable to read {}".format(self.filename))

         return self.data
 

     def write(self, data):

         self.data = data

         try:
             with open(self.filename, 'w') as outfile:
                 json.dump(data, outfile)
         except Exception as _:
             raise Exception("Unable to write {}".format(self.filename))