Add last seen info to devices table.

This allows us to purge old user_ips entries without having to preserve
the latest last seen info for active devices.

1 files changed, 21 insertions, 0 deletions

diff --git a/synapse/storage/schema/delta/56/devices_last_seen.sql b/synapse/storage/schema/delta/56/devices_last_seen.sql
new file mode 100644

index 0000000000..8818eeeb7e
--- /dev/null
+++ b/synapse/storage/schema/delta/56/devices_last_seen.sql
@@ -0,0 +1,21 @@
+/* Copyright 2019 Matrix.org Foundation CIC
+ *
+ * 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.
+ */
+
+-- Track last seen information for a device in the devices table, rather
+-- than relying on it being in the user_ips table (which we want to be able
+-- to purge old entries from)
+ALTER TABLE devices ADD COLUMN last_seen BIGINT;
+ALTER TABLE devices ADD COLUMN ip TEXT;
+ALTER TABLE devices ADD COLUMN user_agent TEXT;