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-rw-r--r--synapse/config/password_auth_providers.py22
-rw-r--r--synapse/util/module_loader.py41
2 files changed, 51 insertions, 12 deletions
diff --git a/synapse/config/password_auth_providers.py b/synapse/config/password_auth_providers.py
index 83762d089a..90824cab7f 100644
--- a/synapse/config/password_auth_providers.py
+++ b/synapse/config/password_auth_providers.py
@@ -15,13 +15,15 @@
 
 from ._base import Config, ConfigError
 
-import importlib
+from synapse.util.module_loader import load_module
 
 
 class PasswordAuthProviderConfig(Config):
     def read_config(self, config):
         self.password_providers = []
 
+        provider_config = None
+
         # We want to be backwards compatible with the old `ldap_config`
         # param.
         ldap_config = config.get("ldap_config", {})
@@ -38,19 +40,15 @@ class PasswordAuthProviderConfig(Config):
             if provider['module'] == "synapse.util.ldap_auth_provider.LdapAuthProvider":
                 from ldap_auth_provider import LdapAuthProvider
                 provider_class = LdapAuthProvider
+                try:
+                    provider_config = provider_class.parse_config(provider["config"])
+                except Exception as e:
+                    raise ConfigError(
+                        "Failed to parse config for %r: %r" % (provider['module'], e)
+                    )
             else:
-                # We need to import the module, and then pick the class out of
-                # that, so we split based on the last dot.
-                module, clz = provider['module'].rsplit(".", 1)
-                module = importlib.import_module(module)
-                provider_class = getattr(module, clz)
+                (provider_class, provider_config) = load_module(provider)
 
-            try:
-                provider_config = provider_class.parse_config(provider["config"])
-            except Exception as e:
-                raise ConfigError(
-                    "Failed to parse config for %r: %r" % (provider['module'], e)
-                )
             self.password_providers.append((provider_class, provider_config))
 
     def default_config(self, **kwargs):
diff --git a/synapse/util/module_loader.py b/synapse/util/module_loader.py
new file mode 100644
index 0000000000..4b51d7a77b
--- /dev/null
+++ b/synapse/util/module_loader.py
@@ -0,0 +1,41 @@
+# -*- coding: utf-8 -*-
+# Copyright 2017 New Vector Ltd
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import importlib
+
+from synapse.config._base import ConfigError
+
+def load_module(provider):
+    """ Loads a module with its config
+    Take a dict with keys 'module' (the module name) and 'config'
+    (the config dict).
+
+    Returns
+        Tuple of (provider class, parsed config object)
+    """
+    # We need to import the module, and then pick the class out of
+    # that, so we split based on the last dot.
+    module, clz = provider['module'].rsplit(".", 1)
+    module = importlib.import_module(module)
+    provider_class = getattr(module, clz)
+
+    try:
+        provider_config = provider_class.parse_config(provider["config"])
+    except Exception as e:
+        raise ConfigError(
+            "Failed to parse config for %r: %r" % (provider['module'], e)
+        )
+
+    return provider_class, provider_config