X-Git-Url: https://git.openstreetmap.org./nominatim.git/blobdiff_plain/8b90ee4364b54b71b790cf52c1ccca31048437d7..63dc4b39bc6bc0bf5a95d0c1a8298f5349637a9e:/nominatim/config.py

diff --git a/nominatim/config.py b/nominatim/config.py
index bc3556f3..13d9cd8a 100644
--- a/nominatim/config.py
+++ b/nominatim/config.py
@@ -1,3 +1,9 @@
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# This file is part of Nominatim. (https://nominatim.org)
+#
+# Copyright (C) 2022 by the Nominatim developer community.
+# For a full list of authors see the git log.
 """
 Nominatim configuration accessor.
 """
@@ -12,7 +18,7 @@ from dotenv import dotenv_values
 from nominatim.errors import UsageError
 
 LOG = logging.getLogger()
-
+CONFIG_CACHE = {}
 
 def flatten_config_list(content, section=''):
     """ Flatten YAML configuration lists that contain include sections
@@ -175,14 +181,19 @@ class Configuration:
         """
         configfile = self.find_config_file(filename, config)
 
-        if configfile.suffix in ('.yaml', '.yml'):
-            return self._load_from_yaml(configfile)
+        if str(configfile) in CONFIG_CACHE:
+            return CONFIG_CACHE[str(configfile)]
 
-        if configfile.suffix == '.json':
+        if configfile.suffix in ('.yaml', '.yml'):
+            result = self._load_from_yaml(configfile)
+        elif configfile.suffix == '.json':
             with configfile.open('r') as cfg:
-                return json.load(cfg)
+                result = json.load(cfg)
+        else:
+            raise UsageError(f"Config file '{configfile}' has unknown format.")
 
-        raise UsageError(f"Config file '{configfile}' has unknown format.")
+        CONFIG_CACHE[str(configfile)] = result
+        return result
 
 
     def find_config_file(self, filename, config=None):