Make token serializing/deserializing async (#8427)

The idea is that in future tokens will encode a mapping of instance to position. However, we don't want to include the full instance name in the string representation, so instead we'll have a mapping between instance name and an immutable integer ID in the DB that we can use instead. We'll then do the lookup when we serialize/deserialize the token (we could alternatively pass around an `Instance` type that includes both the name and ID, but that turns out to be a lot more invasive).

1 files changed, 4 insertions, 4 deletions

diff --git a/synapse/handlers/search.py b/synapse/handlers/search.py
index 6a76c20d79..e9402e6e2e 100644
--- a/synapse/handlers/search.py
+++ b/synapse/handlers/search.py
@@ -362,13 +362,13 @@ class SearchHandler(BaseHandler):
                     self.storage, user.to_string(), res["events_after"]
                 )
 
-                res["start"] = now_token.copy_and_replace(
+                res["start"] = await now_token.copy_and_replace(
                     "room_key", res["start"]
-                ).to_string()
+                ).to_string(self.store)
 
-                res["end"] = now_token.copy_and_replace(
+                res["end"] = await now_token.copy_and_replace(
                     "room_key", res["end"]
-                ).to_string()
+                ).to_string(self.store)
 
                 if include_profile:
                     senders = {