fix mypy errors

Author: dklimpel

synapse/rest/admin/federation.py

@@ -19,10 +19,7 @@
 from synapse.http.servlet import RestServlet, parse_integer, parse_string
 from synapse.http.site import SynapseRequest
 from synapse.rest.admin._base import admin_patterns, assert_requester_is_admin
-from synapse.storage.databases.main.transactions import (
-    DestinationRetryTimings,
-    DestinationSortOrder,
-)
+from synapse.storage.databases.main.transactions import DestinationSortOrder
 from synapse.types import JsonDict
 
 if TYPE_CHECKING:
@@ -121,10 +118,19 @@ async def on_GET(
             destination
         )
 
-        if destination_retry_timings is None:
-            destination_retry_timings = DestinationRetryTimings(
-                failure_ts=None, retry_last_ts=0, retry_interval=0
-            )
+        retry_timing_respone: JsonDict = {}
+        if destination_retry_timings:
+            retry_timing_respone = {
+                "failure_ts": destination_retry_timings.failure_ts,
+                "retry_last_ts": destination_retry_timings.retry_last_ts,
+                "retry_interval": destination_retry_timings.retry_interval,
+            }
+        else:
+            retry_timing_respone = {
+                "failure_ts": None,
+                "retry_last_ts": 0,
+                "retry_interval": 0,
+            }
 
         last_successful_stream_ordering = (
             await self._store.get_destination_last_successful_stream_ordering(
@@ -134,10 +140,8 @@ async def on_GET(
 
         response = {
             "destination": destination,
-            "failure_ts": destination_retry_timings.failure_ts,
-            "retry_last_ts": destination_retry_timings.retry_last_ts,
-            "retry_interval": destination_retry_timings.retry_interval,
             "last_successful_stream_ordering": last_successful_stream_ordering,
+            **retry_timing_respone,
         }
 
         return HTTPStatus.OK, response

tests/rest/admin/test_federation.py

@@ -464,11 +464,12 @@ def _create_destination(
                 destination, failure_ts, retry_last_ts, retry_interval
             )
         )
-        self.get_success(
-            self.store.set_destination_last_successful_stream_ordering(
-                destination, last_successful_stream_ordering
+        if last_successful_stream_ordering is not None:
+            self.get_success(
+                self.store.set_destination_last_successful_stream_ordering(
+                    destination, last_successful_stream_ordering
+                )
             )
-        )
 
     def _create_destinations(self, number_destinations: int) -> None:
         """Create a number of destinations