begin to switch to configparser

To not have unwanted environment influence

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 = ()