load config from env

1 files changed, 31 insertions, 0 deletions

diff --git a/talerbank/talerconfig.py b/talerbank/talerconfig.py
index e8dd384..74d6aff 100644
--- a/talerbank/talerconfig.py
+++ b/talerbank/talerconfig.py
@@ -1,3 +1,26 @@
+#  This file is part of TALER
+#  (C) 2016 INRIA
+#
+#  TALER is free software; you can redistribute it and/or modify it under the
+#  terms of the GNU Affero General Public License as published by the Free Software
+#  Foundation; either version 3, or (at your option) any later version.
+#
+#  TALER is distributed in the hope that it will be useful, but WITHOUT ANY
+#  WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+#  A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+#
+#  You should have received a copy of the GNU General Public License along with
+#  TALER; see the file COPYING.  If not, If not, see <http://www.gnu.org/licenses/>
+#
+#  @author Florian Dold
+
+"""
+Parse GNUnet-style configurations in pure Python
+"""
+
+# FIXME: make sure that autovivification of config entries
+# does not leave garbage behind (use weakrefs!)
+
 import logging
 import collections
 import os
@@ -111,6 +134,14 @@ class TalerConfig:
             return
         logger.warn("no base directory found")
 
+    def load_env(self, dirname, *args, **kwargs):
+        """
+        Load file from environment variable TALER_CONFIG_FILE
+        or from default location if the variable is not set.
+        """
+        filename = os.environ.get("TALER_CONFIG_FILE")
+        self.load_file(filename, *args, **kwargs)
+
     def load_dir(self, dirname):
         try:
             files = os.listdir(dirname)