From 61407986b40e28b590961d364f5618bbe7d44e94 Mon Sep 17 00:00:00 2001
From: Mark Haines <mark.haines@matrix.org>
Date: Wed, 30 Mar 2016 16:18:46 +0100
Subject: [PATCH] Add a entry to current_state_resets table when the current
 state is reset

---
 synapse/storage/events.py | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/synapse/storage/events.py b/synapse/storage/events.py
index a4b8995496..bd4d503b6d 100644
--- a/synapse/storage/events.py
+++ b/synapse/storage/events.py
@@ -205,6 +205,15 @@ class EventsStore(SQLBaseStore):
             txn.call_after(self.get_joined_hosts_for_room.invalidate, (event.room_id,))
             txn.call_after(self.get_room_name_and_aliases, event.room_id)
 
+            # Add an entry to the current_state_resets table to record the point
+            # where we clobbered the current state
+            stream_order = event.internal_metadata.stream_ordering
+            self._simple_insert_txn(
+                txn,
+                table="current_state_resets",
+                values={"event_stream_ordering": stream_order}
+            )
+
             self._simple_delete_txn(
                 txn,
                 table="current_state_events",