Add the peft registry module

examples/singa_peft/src/singa_peft/peft_registry.py

@@ -0,0 +1,52 @@
+#
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you 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.
+#
+
+class PeftRegistry:
+    """
+    PeftRegistry: the registry class for peft method
+    """
+
+    _tuners = {}
+
+    @classmethod
+    def register(cls, tuner_name):
+        r"""
+        Register the Tuner class decorator
+        Args:
+            tuner_name: the name of the Tuner
+
+        Returns: the class of decorator
+        """
+        def decorator(tuner_class):
+            cls._tuners[tuner_name] = tuner_class
+            return tuner_class
+        return decorator
+
+    @classmethod
+    def get_tuner(cls, tuner_name):
+        r"""
+        Get the Tuner class by name
+        Args:
+            tuner_name: the name of the Tuner
+
+        Returns: the class of the Tuner
+        """
+        if tuner_name not in cls._tuners:
+            raise ValueError(f"Unsupported peft method: {tuner_name}")
+        return cls._tuners[tuner_name]