Fix serialization errors when rotating notifications (#13118)

1 files changed, 35 insertions, 0 deletions

diff --git a/synapse/storage/schema/main/delta/72/01event_push_summary_receipt.sql b/synapse/storage/schema/main/delta/72/01event_push_summary_receipt.sql
new file mode 100644
index 0000000000..e45db61529
--- /dev/null
+++ b/synapse/storage/schema/main/delta/72/01event_push_summary_receipt.sql
@@ -0,0 +1,35 @@
+/* Copyright 2022 The Matrix.org Foundation C.I.C
+ *
+ * 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.
+ */
+
+-- Add a column that records the position of the read receipt for the user at
+-- the time we summarised the push actions. This is used to check if the counts
+-- are up to date after a new read receipt has been sent.
+--
+-- Null means that we can skip that check, as the row was written by an older
+-- version of Synapse that updated `event_push_summary` synchronously when
+-- persisting a new read receipt
+ALTER TABLE event_push_summary ADD COLUMN last_receipt_stream_ordering BIGINT;
+
+
+-- Tracks which new receipts we've handled
+CREATE TABLE event_push_summary_last_receipt_stream_id (
+    Lock CHAR(1) NOT NULL DEFAULT 'X' UNIQUE,  -- Makes sure this table only has one row.
+    stream_id BIGINT NOT NULL,
+    CHECK (Lock='X')
+);
+
+INSERT INTO event_push_summary_last_receipt_stream_id (stream_id)
+  SELECT COALESCE(MAX(stream_id), 0)
+  FROM receipts_linearized;