Work on rooms/state, database, alias, directory, edus services, event_handler, lazy_loading, metadata, outlier, and pdu_metadata

src/service/rooms/state/data.rs

@@ -1,16 +1,24 @@
 pub trait Data {
+    /// Returns the last state hash key added to the db for the given room.
     fn get_room_shortstatehash(room_id: &RoomId);
+
+    /// Update the current state of the room.
+    fn set_room_state(room_id: &RoomId, new_shortstatehash: u64
+        _mutex_lock: &MutexGuard<'_, StateLock>, // Take mutex guard to make sure users get the room state mutex
+    );
+
+    /// Associates a state with an event.
+    fn set_event_state(shorteventid: u64, shortstatehash: u64) -> Result<()> {
+
+    /// Returns all events we would send as the prev_events of the next event.
+    fn get_forward_extremities(room_id: &RoomId) -> Result<HashSet<Arc<EventId>>>;
+
+    /// Replace the forward extremities of the room.
+    fn set_forward_extremities(
+        room_id: &RoomId,
+        event_ids: impl IntoIterator<Item = &'_ EventId> + Debug,
+        _mutex_lock: &MutexGuard<'_, StateLock>, // Take mutex guard to make sure users get the room state mutex
+    ) -> Result<()> {
 }
 
-    /// Returns the last state hash key added to the db for the given room.
-    #[tracing::instrument(skip(self))]
-    pub fn current_shortstatehash(&self, room_id: &RoomId) -> Result<Option<u64>> {
-        self.roomid_shortstatehash
-            .get(room_id.as_bytes())?
-            .map_or(Ok(None), |bytes| {
-                Ok(Some(utils::u64_from_bytes(&bytes).map_err(|_| {
-                    Error::bad_database("Invalid shortstatehash in roomid_shortstatehash")
-                })?))
-            })
-    }
-
+pub struct StateLock;