Re-implement unread counts (again) (#8059)

1 files changed, 26 insertions, 0 deletions

diff --git a/synapse/storage/databases/main/schema/delta/58/15unread_count.sql b/synapse/storage/databases/main/schema/delta/58/15unread_count.sql
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index 0000000000..b451e8663a
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+++ b/synapse/storage/databases/main/schema/delta/58/15unread_count.sql
@@ -0,0 +1,26 @@
+/* Copyright 2020 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.
+ */
+
+-- We're hijacking the push actions to store unread messages and unread counts (specified
+-- in MSC2654) because doing otherwise would result in either performance issues or
+-- reimplementing a consequent bit of the push actions.
+
+-- Add columns to event_push_actions and event_push_actions_staging to track unread
+-- messages and calculate unread counts.
+ALTER TABLE event_push_actions_staging ADD COLUMN unread SMALLINT NOT NULL DEFAULT 0;
+ALTER TABLE event_push_actions ADD COLUMN unread SMALLINT NOT NULL DEFAULT 0;
+
+-- Add column to event_push_summary
+ALTER TABLE event_push_summary ADD COLUMN unread_count BIGINT NOT NULL DEFAULT 0;
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