From 3abab26458cc9fe8a77d5ccee664e87ce407ed58 Mon Sep 17 00:00:00 2001
From: Mark Haines <mark.haines@matrix.org>
Date: Fri, 13 May 2016 15:34:06 +0100
Subject: [PATCH] Add a slaved datastore for account data

---
 .../replication/slave/storage/account_data.py | 61 +++++++++++++++++++
 .../slave/storage/test_account_data.py        | 56 +++++++++++++++++
 2 files changed, 117 insertions(+)
 create mode 100644 synapse/replication/slave/storage/account_data.py
 create mode 100644 tests/replication/slave/storage/test_account_data.py

diff --git a/synapse/replication/slave/storage/account_data.py b/synapse/replication/slave/storage/account_data.py
new file mode 100644
index 000000000..f59b0eabb
--- /dev/null
+++ b/synapse/replication/slave/storage/account_data.py
@@ -0,0 +1,61 @@
+# -*- coding: utf-8 -*-
+# Copyright 2016 OpenMarket 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.
+
+from ._base import BaseSlavedStore
+from ._slaved_id_tracker import SlavedIdTracker
+from synapse.storage.account_data import AccountDataStore
+
+
+class SlavedAccountDataStore(BaseSlavedStore):
+
+    def __init__(self, db_conn, hs):
+        super(SlavedAccountDataStore, self).__init__(db_conn, hs)
+        self._account_data_id_gen = SlavedIdTracker(
+            db_conn, "account_data_max_stream_id", "stream_id",
+        )
+
+    get_global_account_data_by_type_for_users = (
+        AccountDataStore.__dict__["get_global_account_data_by_type_for_users"]
+    )
+
+    get_global_account_data_by_type_for_user = (
+        AccountDataStore.__dict__["get_global_account_data_by_type_for_user"]
+    )
+
+    def stream_positions(self):
+        result = super(SlavedAccountDataStore, self).stream_positions()
+        position = self._account_data_id_gen.get_current_token()
+        result["user_account_data"] = position
+        result["room_account_data"] = position
+        result["tag_account_data"] = position
+        return result
+
+    def process_replication(self, result):
+        stream = result.get("user_account_data")
+        if stream:
+            self._account_data_id_gen.advance(int(stream["position"]))
+            for row in stream["rows"]:
+                user_id, data_type = row[1:3]
+                self.get_global_account_data_by_type_for_user.invalidate(
+                    (data_type, user_id,)
+                )
+
+        stream = result.get("room_account_data")
+        if stream:
+            self._account_data_id_gen.advance(int(stream["position"]))
+
+        stream = result.get("tag_account_data")
+        if stream:
+            self._account_data_id_gen.advance(int(stream["position"]))
diff --git a/tests/replication/slave/storage/test_account_data.py b/tests/replication/slave/storage/test_account_data.py
new file mode 100644
index 000000000..da54d478c
--- /dev/null
+++ b/tests/replication/slave/storage/test_account_data.py
@@ -0,0 +1,56 @@
+# Copyright 2016 OpenMarket 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.
+
+
+from ._base import BaseSlavedStoreTestCase
+
+from synapse.replication.slave.storage.account_data import SlavedAccountDataStore
+
+from twisted.internet import defer
+
+USER_ID = "@feeling:blue"
+TYPE = "my.type"
+
+
+class SlavedAccountDataStoreTestCase(BaseSlavedStoreTestCase):
+
+    STORE_TYPE = SlavedAccountDataStore
+
+    @defer.inlineCallbacks
+    def test_user_account_data(self):
+        yield self.master_store.add_account_data_for_user(
+            USER_ID, TYPE, {"a": 1}
+        )
+        yield self.replicate()
+        yield self.check(
+            "get_global_account_data_by_type_for_user",
+            [TYPE, USER_ID], {"a": 1}
+        )
+        yield self.check(
+            "get_global_account_data_by_type_for_users",
+            [TYPE, [USER_ID]], {USER_ID: {"a": 1}}
+        )
+
+        yield self.master_store.add_account_data_for_user(
+            USER_ID, TYPE, {"a": 2}
+        )
+        yield self.replicate()
+        yield self.check(
+            "get_global_account_data_by_type_for_user",
+            [TYPE, USER_ID], {"a": 2}
+        )
+        yield self.check(
+            "get_global_account_data_by_type_for_users",
+            [TYPE, [USER_ID]], {USER_ID: {"a": 2}}
+        )