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-rw-r--r--synapse/storage/databases/main/registration.py32
1 files changed, 31 insertions, 1 deletions
diff --git a/synapse/storage/databases/main/registration.py b/synapse/storage/databases/main/registration.py
index a83df7759d..16ba545740 100644
--- a/synapse/storage/databases/main/registration.py
+++ b/synapse/storage/databases/main/registration.py
@@ -1,7 +1,7 @@
 # -*- coding: utf-8 -*-
 # Copyright 2014-2016 OpenMarket Ltd
 # Copyright 2017-2018 New Vector Ltd
-# Copyright 2019 The Matrix.org Foundation C.I.C.
+# Copyright 2019,2020 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.
@@ -964,6 +964,36 @@ class RegistrationStore(RegistrationBackgroundUpdateStore):
             desc="add_access_token_to_user",
         )
 
+    def _set_device_for_access_token_txn(self, txn, token: str, device_id: str) -> str:
+        old_device_id = self.db_pool.simple_select_one_onecol_txn(
+            txn, "access_tokens", {"token": token}, "device_id"
+        )
+
+        self.db_pool.simple_update_txn(
+            txn, "access_tokens", {"token": token}, {"device_id": device_id}
+        )
+
+        self._invalidate_cache_and_stream(txn, self.get_user_by_access_token, (token,))
+
+        return old_device_id
+
+    async def set_device_for_access_token(self, token: str, device_id: str) -> str:
+        """Sets the device ID associated with an access token.
+
+        Args:
+            token: The access token to modify.
+            device_id: The new device ID.
+        Returns:
+            The old device ID associated with the access token.
+        """
+
+        return await self.db_pool.runInteraction(
+            "set_device_for_access_token",
+            self._set_device_for_access_token_txn,
+            token,
+            device_id,
+        )
+
     async def register_user(
         self,
         user_id: str,