stream_traffic: Update get_streams_traffic to return None for zephyr realm.

Instead of having a "realm.is_zephyr_mirror_realm" check for every
get_streams_traffic call, this commit udpates get_streams_traffic to
accept realm as parameter and return "None" for zephyr mirror realm.

zerver/actions/streams.py

@@ -210,10 +210,7 @@ def do_reactivate_stream(
         event_time=timezone_now(),
     )
 
-    recent_traffic = None
-    if not realm.is_zephyr_mirror_realm:
-        # We do not need stream traffic data for streams in zephyr mirroring realm.
-        recent_traffic = get_streams_traffic({stream.id})
+    recent_traffic = get_streams_traffic({stream.id}, realm)
 
     # All admins always get to know about private streams' existence,
     # but we only subscribe the realm owners.
@@ -443,11 +440,8 @@ def send_stream_creation_events_for_previously_inaccessible_streams(
     altered_user_dict: Dict[int, Set[int]],
     altered_guests: Set[int],
 ) -> None:
-    recent_traffic = None
-    if not realm.is_zephyr_mirror_realm:
-        # We do not need stream traffic data for streams in zephyr mirroring realm.
     stream_ids = set(altered_user_dict.keys())
-        recent_traffic = get_streams_traffic(stream_ids)
+    recent_traffic = get_streams_traffic(stream_ids, realm)
 
     for stream_id, stream_users_ids in altered_user_dict.items():
         stream = stream_dict[stream_id]
@@ -1046,10 +1040,7 @@ def do_change_stream_permission(
         non_guest_user_ids = set(active_non_guest_user_ids(stream.realm_id))
         notify_stream_creation_ids = non_guest_user_ids - old_can_access_stream_user_ids
 
-        recent_traffic = None
-        if not realm.is_zephyr_mirror_realm:
-            # We do not need stream traffic data for streams in zephyr mirroing realm.
-            recent_traffic = get_streams_traffic({stream.id})
+        recent_traffic = get_streams_traffic({stream.id}, realm)
         send_stream_creation_event(realm, stream, list(notify_stream_creation_ids), recent_traffic)
 
         # Add subscribers info to the stream object. We need to send peer_add

zerver/lib/stream_traffic.py

@@ -6,9 +6,16 @@ from django.utils.timezone import now as timezone_now
 
 from analytics.lib.counts import COUNT_STATS
 from analytics.models import StreamCount
+from zerver.models import Realm
 
 
-def get_streams_traffic(stream_ids: Set[int]) -> Dict[int, int]:
+def get_streams_traffic(
+    stream_ids: Set[int], realm: Optional[Realm] = None
+) -> Optional[Dict[int, int]]:
+    if realm is not None and realm.is_zephyr_mirror_realm:
+        # We do not need traffic data for streams in zephyr mirroring realm.
+        return None
+
     stat = COUNT_STATS["messages_in_stream:is_bot:day"]
     traffic_from = timezone_now() - datetime.timedelta(days=28)
 

zerver/lib/streams.py

@@ -941,11 +941,8 @@ def do_get_streams(
             # Don't bother going to the database with no valid sources
             return []
 
-    recent_traffic = None
-    if not user_profile.realm.is_zephyr_mirror_realm:
-        # We do not need stream traffic data for streams in zephyr mirroring realm.
     stream_ids = {stream.id for stream in streams}
-        recent_traffic = get_streams_traffic(stream_ids)
+    recent_traffic = get_streams_traffic(stream_ids, user_profile.realm)
 
     stream_dicts = [stream_to_dict(stream, recent_traffic) for stream in streams]
     stream_dicts.sort(key=lambda elt: elt["name"])

zerver/lib/subscription_info.py

@@ -431,6 +431,7 @@ def gather_subscriptions_helper(
 
     traffic_stream_ids = {get_stream_id(sub_dict) for sub_dict in sub_dicts}
     recent_traffic = get_streams_traffic(stream_ids=traffic_stream_ids)
+    assert recent_traffic is not None
 
     # Okay, now we finally get to populating our main results, which
     # will be these three lists.

zerver/views/streams.py

@@ -895,10 +895,7 @@ def get_stream_backend(
 ) -> HttpResponse:
     (stream, sub) = access_stream_by_id(user_profile, stream_id, allow_realm_admin=True)
 
-    recent_traffic = None
-    if not user_profile.realm.is_zephyr_mirror_realm:
-        # We do not need stream traffic data in zephyr mirroring realm.
-        recent_traffic = get_streams_traffic({stream.id})
+    recent_traffic = get_streams_traffic({stream.id}, user_profile.realm)
     return json_success(request, data={"stream": stream_to_dict(stream, recent_traffic)})