Refactor global code in configuration module

cfg.py

@@ -4,39 +4,65 @@ import os
 import ConfigParser
 from ConfigParser import SafeConfigParser
 
-def get_item(parser, section, name):
-    try:
-        return parser.get(section, name)
-    except (ConfigParser.NoSectionError, ConfigParser.NoOptionError):
-        print ("Configuration does not contain the {}.{} option.".format(
-               section, name))
-        raise
-
-parser = SafeConfigParser(
-    defaults={
-        'root':os.path.dirname(os.path.realpath(__file__)),
-        })
-parser.read(os.path.join(os.path.dirname(os.path.realpath(__file__)), 'plinth.config'))
-
-product_name = get_item(parser, 'Name', 'product_name')
-box_name = get_item(parser, 'Name', 'box_name')
-root = get_item(parser, 'Path', 'root')
-file_root = get_item(parser, 'Path', 'file_root')
-python_root = get_item(parser, 'Path', 'python_root')
-data_dir = get_item(parser, 'Path', 'data_dir')
-store_file = get_item(parser, 'Path', 'store_file')
-user_db = get_item(parser, 'Path', 'user_db')
-status_log_file = get_item(parser, 'Path', 'status_log_file')
-access_log_file = get_item(parser, 'Path', 'access_log_file')
-pidfile = get_item(parser, 'Path', 'pidfile')
-host = get_item(parser, 'Network', 'host')
-port = int(get_item(parser, 'Network', 'port'))
+product_name = None
+box_name = None
+root = None
+file_root = None
+python_root = None
+data_dir = None
+store_file = None
+user_db = None
+status_log_file = None
+access_log_file = None
+pidfile = None
+host = None
+port = None
 debug = False
 no_daemon = False
+session_key = '_username'
 
 main_menu = Menu()
 
-if store_file.endswith(".sqlite3"):
-    store_file = os.path.splitext(store_file)[0]
-if user_db.endswith(".sqlite3"):
-    user_db = os.path.splitext(user_db)[0]
+
+def read():
+    """Read configuration"""
+    directory = os.path.dirname(os.path.realpath(__file__))
+    parser = SafeConfigParser(
+        defaults={
+            'root': directory,
+        })
+    parser.read(os.path.join(directory, 'plinth.config'))
+
+    config_items = {('Name', 'product_name'),
+                    ('Name', 'box_name'),
+                    ('Path', 'root'),
+                    ('Path', 'file_root'),
+                    ('Path', 'python_root'),
+                    ('Path', 'data_dir'),
+                    ('Path', 'store_file'),
+                    ('Path', 'user_db'),
+                    ('Path', 'status_log_file'),
+                    ('Path', 'access_log_file'),
+                    ('Path', 'pidfile'),
+                    ('Network', 'host'),
+                    ('Network', 'port')}
+
+    for section, name in config_items:
+        try:
+            value = parser.get(section, name)
+            globals()[name] = value
+        except (ConfigParser.NoSectionError, ConfigParser.NoOptionError):
+            print ('Configuration does not contain the {}.{} option.'
+                   .format(section, name))
+            raise
+
+    global port  # pylint: disable-msg=W0603
+    port = int(port)
+
+    global store_file  # pylint: disable-msg=W0603
+    if store_file.endswith(".sqlite3"):
+        store_file = os.path.splitext(store_file)[0]
+
+    global user_db  # pylint: disable-msg=W0603
+    if user_db.endswith(".sqlite3"):
+        user_db = os.path.splitext(user_db)[0]

modules/lib/auth.py

@@ -6,8 +6,6 @@ from passlib.exc import PasswordSizeError
 import cfg
 from model import User
 
-cfg.session_key = '_username'
-
 
 def add_user(username, passphrase, name='', email='', expert=False):
     """Add a new user with specified username and passphrase.

plinth.py

@@ -3,7 +3,6 @@
 import argparse
 import os
 import sys
-import cfg
 import django.conf
 import django.core.wsgi
 
@@ -11,6 +10,7 @@ import cherrypy
 from cherrypy import _cpserver
 from cherrypy.process.plugins import Daemonizer
 
+import cfg
 import module_loader
 import plugin_mount
 import service
@@ -148,6 +148,8 @@ def main():
     """Intialize and start the application"""
     parse_arguments()
 
+    cfg.read()
+
     setup_logging()
 
     service.init()