statusd.py now works with json modul

the deamon now uses the python modul json to read and write the api file. the
function replace_entry() is removed.

statusd.py

@@ -9,6 +9,7 @@
 import socket
 import os
 import logging
+import json
 from time import time, ctime, sleep
 from sys import exit, byteorder
 
@@ -82,26 +83,6 @@ def bytes2int(raw_data):
     return data
 
 
-def replace_entry(line, new):
-    '''
-    The function becomes two strings and replaces the second part of the
-    first string from ":" until end with the second string. Than appends a
-    "," and returns the result.
-
-    !!! Todo: needs exception handling !!!
-
-    param 1: string
-    param 2: string
-    return: string
-    '''
-    array = line.split(':')
-    logging.debug('Replace {} with {}'.format(array[1], new))
-    array[1] = ''.join((new, ','))
-    line = ':'.join((array[0], array[1]))
-    return line
-
-
-
 def change_status(raw_data, api):
     '''
     Becomes the received byte and the path to API file. Grabs the content of
@@ -121,21 +102,13 @@ def change_status(raw_data, api):
             logging.debug('API file is writable')
             with open(api, 'w') as api_file:
                 logging.debug('API file open successfull')
-                for line in data.splitlines():
+                data["state"]["open"] = status
-                    if line.strip().startswith('"state":'):
+                data["state"]["lastchange"] = timestamp
-                        edit = True
+                try:
-                    elif edit == True and line.strip().startswith('"open":'):
+                    json.dump(data, api_file, indent=4)
-                        line = replace_entry(line, status)
+                except Exception as e:
-                    elif edit == True and line.strip().startswith('"lastchange":'):
+                    logging.error('Failed to change API file')
-                        line = replace_entry(line, timestamp)
+                    logging.error('{}'.format(e))
-                        edit = False
-                    try:
-                        api_file.write(line)
-                        api_file.write('\n')
-                    except Exception as e:
-                        logging.error('Failed to write line to API file')
-                        logging.error('Line: {}'.format(line))
-                        logging.error('{}'.format(e))
                 logging.debug('API file changed')
         else:
             logging.error('API file is not writable. Wrong permissions?')
@@ -158,12 +131,12 @@ def read_api(api):
        with open(api, 'r') as api_file:
            logging.debug('API opened successfull')
            try:
-              api_data = api_file.read()
+              api_json_data = json.load(api_file)
-              logging.debug('API read successfull')
+              logging.debug('API file read successfull')
            except Exception as e:
                logging.error('Failed to read API file(): {}'.format(e))
                return False
-       return (api_data)
+       return (api_json_data)
     logging.error('Failed to read API file')
     return False