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--- a
+++ b/ForgeTracker/forgetracker/plugins.py
@@ -0,0 +1,32 @@
+import logging
+
+from tg import config
+from pylons import app_globals as g
+
+log = logging.getLogger(__name__)
+
+
+class ImportIdConverter(object):
+    '''
+    An interface to provide authentication services for Allura.
+
+    To provide a new converter, expose an entry point in setup.py:
+
+        [allura.tickets.import_id_converter]
+        mylegacy = foo.bar:LegacyConverter
+
+    Then in your .ini file, set tickets.import_id_converter=mylegacy
+    '''
+
+    @classmethod
+    def get(cls):
+        converter = config.get('tickets.import_id_converter')
+        if converter:
+            return g.entry_points['allura.tickets.import_id_converter'][converter]()
+        return cls()
+
+    def simplify(self, import_id):
+        return import_id
+
+    def expand(self, url_part, app_instance):
+        return url_part