begin to switch to configparser

To not have unwanted environment influence

scripts/ucloud

@@ -3,10 +3,8 @@
 import argparse
 import logging
 import importlib
-
-# For the exception
-import decouple
 import sys
+import os
 
 COMMANDS = ['api', 'scheduler', 'host', 'filescanner', 'imagescanner', 'metadata']
 
@@ -15,20 +13,25 @@ if __name__ == "__main__":
 
     arg_parser = argparse.ArgumentParser(prog='ucloud',
                                          description='Open Source Cloud Management Software')
+    arg_parser.add_argument('-c', '--conf-dir', help="Configuration directory")
     arg_parser.add_argument('component', choices=COMMANDS)
     arg_parser.add_argument('component_args', nargs='*')
     args = arg_parser.parse_args()
 
     try:
         name = args.component
-
         mod = importlib.import_module("ucloud.{}.main".format(name))
         main = getattr(mod, "main")
+
+        if args.conf_dir:
+            print("setting conf")
+            os.environ['UCLOUD_CONF_DIR'] = args.conf_dir
+
         main()
 
-    except decouple.UndefinedValueError as e:
-        print(e)
-        sys.exit(1)
+    # except decouple.UndefinedValueError as e:
+    #     print(e)
+    #     sys.exit(1)
 
     except Exception as e:
         logging.exception(e)

ucloud/config.py

@@ -4,14 +4,46 @@ from ucloud.common.host import HostPool
 from ucloud.common.request import RequestPool
 from ucloud.common.vm import VmPool
 from ucloud.common.storage_handlers import FileSystemBasedImageStorageHandler, CEPHBasedImageStorageHandler
+
 from decouple import Config, RepositoryEnv, RepositoryEmpty
 
+# Replacing decouple inline
+import configparser
+import os
+import os.path
+
+import logging
+
+log = logging.getLogger("ucloud.config")
+
+
+conf_name = "ucloud.conf"
+
+try:
+    conf_dir = os.environ["UCLOUD_CONF_DIR"]
+except KeyError:
+    conf_dir = "/etc/ucloud"
+
+config_file = os.path.join(conf_dir, conf_name)
+
+config = configparser.ConfigParser()
+
+try:
+    with open(config_file, "r") as conf_fd:
+        conf.read(conf_fd)
+except FileNotFoundError:
+    log.warn("Configuration file not found - using defaults")
+
+
+# Compatibility to old code
+env_vars = config
+
 
 # Try importing config, but don't fail if it does not exist
-try:
-    env_vars = Config(RepositoryEnv('/etc/ucloud/ucloud.conf'))
-except FileNotFoundError:
-    env_vars = Config(RepositoryEmpty())
+# try:
+#     env_vars = Config(RepositoryEnv('/etc/ucloud/ucloud.conf'))
+# except FileNotFoundError:
+#     env_vars = Config(RepositoryEmpty())
 
 
 etcd_wrapper_args = ()