diff --git a/synapse/storage/feedback.py b/synapse/storage/feedback.py
new file mode 100644
index 0000000000..2b421e3342
--- /dev/null
+++ b/synapse/storage/feedback.py
@@ -0,0 +1,74 @@
+# -*- coding: utf-8 -*-
+# Copyright 2014 matrix.org
+#
+# 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.
+from ._base import SQLBaseStore, Table
+from synapse.api.events.room import FeedbackEvent
+
+import collections
+import json
+
+
+class FeedbackStore(SQLBaseStore):
+
+ def store_feedback(self, room_id, msg_id, msg_sender_id,
+ fb_sender_id, fb_type, content):
+ return self._simple_insert(FeedbackTable.table_name, dict(
+ room_id=room_id,
+ msg_id=msg_id,
+ msg_sender_id=msg_sender_id,
+ fb_sender_id=fb_sender_id,
+ fb_type=fb_type,
+ content=content,
+ ))
+
+ def get_feedback(self, room_id=None, msg_id=None, msg_sender_id=None,
+ fb_sender_id=None, fb_type=None):
+ query = FeedbackTable.select_statement(
+ "msg_sender_id = ? AND room_id = ? AND msg_id = ? " +
+ "AND fb_sender_id = ? AND feedback_type = ? " +
+ "ORDER BY id DESC LIMIT 1")
+ return self._execute(
+ FeedbackTable.decode_single_result,
+ query, msg_sender_id, room_id, msg_id, fb_sender_id, fb_type,
+ )
+
+ def get_max_feedback_id(self):
+ return self._simple_max_id(FeedbackTable.table_name)
+
+
+class FeedbackTable(Table):
+ table_name = "feedback"
+
+ fields = [
+ "id",
+ "content",
+ "feedback_type",
+ "fb_sender_id",
+ "msg_id",
+ "room_id",
+ "msg_sender_id"
+ ]
+
+ class EntryType(collections.namedtuple("FeedbackEntry", fields)):
+
+ def as_event(self, event_factory):
+ return event_factory.create_event(
+ etype=FeedbackEvent.TYPE,
+ room_id=self.room_id,
+ msg_id=self.msg_id,
+ msg_sender_id=self.msg_sender_id,
+ user_id=self.fb_sender_id,
+ feedback_type=self.feedback_type,
+ content=json.loads(self.content),
+ )
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