improvement: make more things async

src/client_server/context.rs

@@ -137,7 +137,7 @@ pub async fn get_context_route(
             .expect("All rooms have state"),
     };
 
-    let state_ids = db.rooms.state_full_ids(shortstatehash)?;
+    let state_ids = db.rooms.state_full_ids(shortstatehash).await?;
 
     let end_token = events_after
         .last()

src/client_server/membership.rs

@@ -29,7 +29,7 @@ use ruma::{
 };
 use serde_json::value::{to_raw_value, RawValue as RawJsonValue};
 use std::{
-    collections::{hash_map::Entry, BTreeMap, HashMap, HashSet},
+    collections::{hash_map::Entry, BTreeMap, HashMap},
     iter,
     sync::{Arc, RwLock},
     time::{Duration, Instant},
@@ -48,19 +48,20 @@ pub async fn join_room_by_id_route(
 ) -> Result<join_room_by_id::v3::Response> {
     let sender_user = body.sender_user.as_ref().expect("user is authenticated");
 
-    let mut servers: HashSet<_> = db
-        .rooms
-        .invite_state(sender_user, &body.room_id)?
-        .unwrap_or_default()
-        .iter()
-        .filter_map(|event| serde_json::from_str(event.json().get()).ok())
-        .filter_map(|event: serde_json::Value| event.get("sender").cloned())
-        .filter_map(|sender| sender.as_str().map(|s| s.to_owned()))
-        .filter_map(|sender| UserId::parse(sender).ok())
-        .map(|user| user.server_name().to_owned())
-        .collect();
-
-    servers.insert(body.room_id.server_name().to_owned());
+    let mut servers = Vec::new(); // There is no body.server_name for /roomId/join
+    servers.extend(
+        db.rooms
+            .invite_state(sender_user, &body.room_id)?
+            .unwrap_or_default()
+            .iter()
+            .filter_map(|event| serde_json::from_str(event.json().get()).ok())
+            .filter_map(|event: serde_json::Value| event.get("sender").cloned())
+            .filter_map(|sender| sender.as_str().map(|s| s.to_owned()))
+            .filter_map(|sender| UserId::parse(sender).ok())
+            .map(|user| user.server_name().to_owned()),
+    );
+
+    servers.push(body.room_id.server_name().to_owned());
 
     let ret = join_room_by_id_helper(
         &db,
@@ -91,19 +92,20 @@ pub async fn join_room_by_id_or_alias_route(
 
     let (servers, room_id) = match Box::<RoomId>::try_from(body.room_id_or_alias) {
         Ok(room_id) => {
-            let mut servers: HashSet<_> = db
-                .rooms
-                .invite_state(sender_user, &room_id)?
-                .unwrap_or_default()
-                .iter()
-                .filter_map(|event| serde_json::from_str(event.json().get()).ok())
-                .filter_map(|event: serde_json::Value| event.get("sender").cloned())
-                .filter_map(|sender| sender.as_str().map(|s| s.to_owned()))
-                .filter_map(|sender| UserId::parse(sender).ok())
-                .map(|user| user.server_name().to_owned())
-                .collect();
+            let mut servers = body.server_name.clone();
+            servers.extend(
+                db.rooms
+                    .invite_state(sender_user, &room_id)?
+                    .unwrap_or_default()
+                    .iter()
+                    .filter_map(|event| serde_json::from_str(event.json().get()).ok())
+                    .filter_map(|event: serde_json::Value| event.get("sender").cloned())
+                    .filter_map(|sender| sender.as_str().map(|s| s.to_owned()))
+                    .filter_map(|sender| UserId::parse(sender).ok())
+                    .map(|user| user.server_name().to_owned()),
+            );
 
-            servers.insert(room_id.server_name().to_owned());
+            servers.push(room_id.server_name().to_owned());
             (servers, room_id)
         }
         Err(room_alias) => {
@@ -413,7 +415,8 @@ pub async fn get_member_events_route(
     Ok(get_member_events::v3::Response {
         chunk: db
             .rooms
-            .room_state_full(&body.room_id)?
+            .room_state_full(&body.room_id)
+            .await?
             .iter()
             .filter(|(key, _)| key.0 == StateEventType::RoomMember)
             .map(|(_, pdu)| pdu.to_member_event().into())
@@ -462,7 +465,7 @@ async fn join_room_by_id_helper(
     db: &Database,
     sender_user: Option<&UserId>,
     room_id: &RoomId,
-    servers: &HashSet<Box<ServerName>>,
+    servers: &[Box<ServerName>],
     _third_party_signed: Option<&IncomingThirdPartySigned>,
 ) -> Result<join_room_by_id::v3::Response> {
     let sender_user = sender_user.expect("user is authenticated");
@@ -478,7 +481,7 @@ async fn join_room_by_id_helper(
     let state_lock = mutex_state.lock().await;
 
     // Ask a remote server if we don't have this room
-    if !db.rooms.exists(room_id)? && room_id.server_name() != db.globals.server_name() {
+    if !db.rooms.exists(room_id)? {
         let mut make_join_response_and_server = Err(Error::BadServerResponse(
             "No server available to assist in joining.",
         ));
@@ -1032,6 +1035,13 @@ pub(crate) async fn invite_helper<'a>(
         return Ok(());
     }
 
+    if !db.rooms.is_joined(sender_user, &room_id)? {
+        return Err(Error::BadRequest(
+            ErrorKind::Forbidden,
+            "You don't have permission to view this room.",
+        ));
+    }
+
     let mutex_state = Arc::clone(
         db.globals
             .roomid_mutex_state

src/client_server/state.rs

@@ -124,7 +124,8 @@ pub async fn get_state_events_route(
     Ok(get_state_events::v3::Response {
         room_state: db
             .rooms
-            .room_state_full(&body.room_id)?
+            .room_state_full(&body.room_id)
+            .await?
             .values()
             .map(|pdu| pdu.to_state_event())
             .collect(),

src/client_server/sync.rs

@@ -230,18 +230,20 @@ async fn sync_helper(
     for room_id in all_joined_rooms {
         let room_id = room_id?;
 
-        // Get and drop the lock to wait for remaining operations to finish
-        // This will make sure the we have all events until next_batch
-        let mutex_insert = Arc::clone(
-            db.globals
-                .roomid_mutex_insert
-                .write()
-                .unwrap()
-                .entry(room_id.clone())
-                .or_default(),
-        );
-        let insert_lock = mutex_insert.lock().unwrap();
-        drop(insert_lock);
+        {
+            // Get and drop the lock to wait for remaining operations to finish
+            // This will make sure the we have all events until next_batch
+            let mutex_insert = Arc::clone(
+                db.globals
+                    .roomid_mutex_insert
+                    .write()
+                    .unwrap()
+                    .entry(room_id.clone())
+                    .or_default(),
+            );
+            let insert_lock = mutex_insert.lock().unwrap();
+            drop(insert_lock);
+        }
 
         let timeline_pdus;
         let limited;
@@ -296,10 +298,12 @@ async fn sync_helper(
 
         // Database queries:
 
-        let current_shortstatehash = db
-            .rooms
-            .current_shortstatehash(&room_id)?
-            .expect("All rooms have state");
+        let current_shortstatehash = if let Some(s) = db.rooms.current_shortstatehash(&room_id)? {
+            s
+        } else {
+            error!("Room {} has no state", room_id);
+            continue;
+        };
 
         let since_shortstatehash = db.rooms.get_token_shortstatehash(&room_id, since)?;
 
@@ -377,11 +381,12 @@ async fn sync_helper(
 
             let (joined_member_count, invited_member_count, heroes) = calculate_counts()?;
 
-            let current_state_ids = db.rooms.state_full_ids(current_shortstatehash)?;
+            let current_state_ids = db.rooms.state_full_ids(current_shortstatehash).await?;
 
             let mut state_events = Vec::new();
             let mut lazy_loaded = HashSet::new();
 
+            let mut i = 0;
             for (shortstatekey, id) in current_state_ids {
                 let (event_type, state_key) = db.rooms.get_statekey_from_short(shortstatekey)?;
 
@@ -394,6 +399,11 @@ async fn sync_helper(
                         }
                     };
                     state_events.push(pdu);
+
+                    i += 1;
+                    if i % 100 == 0 {
+                        tokio::task::yield_now().await;
+                    }
                 } else if !lazy_load_enabled
                     || body.full_state
                     || timeline_users.contains(&state_key)
@@ -411,6 +421,11 @@ async fn sync_helper(
                         lazy_loaded.insert(uid);
                     }
                     state_events.push(pdu);
+
+                    i += 1;
+                    if i % 100 == 0 {
+                        tokio::task::yield_now().await;
+                    }
                 }
             }
 
@@ -462,8 +477,8 @@ async fn sync_helper(
             let mut lazy_loaded = HashSet::new();
 
             if since_shortstatehash != current_shortstatehash {
-                let current_state_ids = db.rooms.state_full_ids(current_shortstatehash)?;
-                let since_state_ids = db.rooms.state_full_ids(since_shortstatehash)?;
+                let current_state_ids = db.rooms.state_full_ids(current_shortstatehash).await?;
+                let since_state_ids = db.rooms.state_full_ids(since_shortstatehash).await?;
 
                 for (key, id) in current_state_ids {
                     if body.full_state || since_state_ids.get(&key) != Some(&id) {
@@ -490,6 +505,7 @@ async fn sync_helper(
                         }
 
                         state_events.push(pdu);
+                        tokio::task::yield_now().await;
                     }
                 }
             }
@@ -753,17 +769,19 @@ async fn sync_helper(
     for result in all_left_rooms {
         let (room_id, left_state_events) = result?;
 
-        // Get and drop the lock to wait for remaining operations to finish
-        let mutex_insert = Arc::clone(
-            db.globals
-                .roomid_mutex_insert
-                .write()
-                .unwrap()
-                .entry(room_id.clone())
-                .or_default(),
-        );
-        let insert_lock = mutex_insert.lock().unwrap();
-        drop(insert_lock);
+        {
+            // Get and drop the lock to wait for remaining operations to finish
+            let mutex_insert = Arc::clone(
+                db.globals
+                    .roomid_mutex_insert
+                    .write()
+                    .unwrap()
+                    .entry(room_id.clone())
+                    .or_default(),
+            );
+            let insert_lock = mutex_insert.lock().unwrap();
+            drop(insert_lock);
+        }
 
         let left_count = db.rooms.get_left_count(&room_id, &sender_user)?;
 
@@ -793,17 +811,19 @@ async fn sync_helper(
     for result in all_invited_rooms {
         let (room_id, invite_state_events) = result?;
 
-        // Get and drop the lock to wait for remaining operations to finish
-        let mutex_insert = Arc::clone(
-            db.globals
-                .roomid_mutex_insert
-                .write()
-                .unwrap()
-                .entry(room_id.clone())
-                .or_default(),
-        );
-        let insert_lock = mutex_insert.lock().unwrap();
-        drop(insert_lock);
+        {
+            // Get and drop the lock to wait for remaining operations to finish
+            let mutex_insert = Arc::clone(
+                db.globals
+                    .roomid_mutex_insert
+                    .write()
+                    .unwrap()
+                    .entry(room_id.clone())
+                    .or_default(),
+            );
+            let insert_lock = mutex_insert.lock().unwrap();
+            drop(insert_lock);
+        }
 
         let invite_count = db.rooms.get_invite_count(&room_id, &sender_user)?;
 

src/database/admin.rs

@@ -116,7 +116,7 @@ impl Admin {
                                 send_message(content, guard, &state_lock);
                             }
                             AdminRoomEvent::ProcessMessage(room_message) => {
-                                let reply_message = process_admin_message(&*guard, room_message);
+                                let reply_message = process_admin_message(&*guard, room_message).await;
 
                                 send_message(reply_message, guard, &state_lock);
                             }
@@ -143,7 +143,7 @@ impl Admin {
 }
 
 // Parse and process a message from the admin room
-fn process_admin_message(db: &Database, room_message: String) -> RoomMessageEventContent {
+async fn process_admin_message(db: &Database, room_message: String) -> RoomMessageEventContent {
     let mut lines = room_message.lines();
     let command_line = lines.next().expect("each string has at least one line");
     let body: Vec<_> = lines.collect();
@@ -161,7 +161,7 @@ fn process_admin_message(db: &Database, room_message: String) -> RoomMessageEven
         }
     };
 
-    match process_admin_command(db, admin_command, body) {
+    match process_admin_command(db, admin_command, body).await {
         Ok(reply_message) => reply_message,
         Err(error) => {
             let markdown_message = format!(
@@ -290,7 +290,7 @@ enum AdminCommand {
     EnableRoom { room_id: Box<RoomId> },
 }
 
-fn process_admin_command(
+async fn process_admin_command(
     db: &Database,
     command: AdminCommand,
     body: Vec<&str>,
@@ -404,7 +404,9 @@ fn process_admin_command(
                     Error::bad_database("Invalid room id field in event in database")
                 })?;
                 let start = Instant::now();
-                let count = server_server::get_auth_chain(room_id, vec![event_id], db)?.count();
+                let count = server_server::get_auth_chain(room_id, vec![event_id], db)
+                    .await?
+                    .count();
                 let elapsed = start.elapsed();
                 RoomMessageEventContent::text_plain(format!(
                     "Loaded auth chain with length {} in {:?}",

src/database/rooms.rs

@@ -144,20 +144,28 @@ impl Rooms {
     /// Builds a StateMap by iterating over all keys that start
     /// with state_hash, this gives the full state for the given state_hash.
     #[tracing::instrument(skip(self))]
-    pub fn state_full_ids(&self, shortstatehash: u64) -> Result<BTreeMap<u64, Arc<EventId>>> {
+    pub async fn state_full_ids(&self, shortstatehash: u64) -> Result<BTreeMap<u64, Arc<EventId>>> {
         let full_state = self
             .load_shortstatehash_info(shortstatehash)?
             .pop()
             .expect("there is always one layer")
             .1;
-        full_state
-            .into_iter()
-            .map(|compressed| self.parse_compressed_state_event(compressed))
-            .collect()
+        let mut result = BTreeMap::new();
+        let mut i = 0;
+        for compressed in full_state.into_iter() {
+            let parsed = self.parse_compressed_state_event(compressed)?;
+            result.insert(parsed.0, parsed.1);
+
+            i += 1;
+            if i % 100 == 0 {
+                tokio::task::yield_now().await;
+            }
+        }
+        Ok(result)
     }
 
     #[tracing::instrument(skip(self))]
-    pub fn state_full(
+    pub async fn state_full(
         &self,
         shortstatehash: u64,
     ) -> Result<HashMap<(StateEventType, String), Arc<PduEvent>>> {
@@ -166,14 +174,13 @@ impl Rooms {
             .pop()
             .expect("there is always one layer")
             .1;
-        Ok(full_state
-            .into_iter()
-            .map(|compressed| self.parse_compressed_state_event(compressed))
-            .filter_map(|r| r.ok())
-            .map(|(_, eventid)| self.get_pdu(&eventid))
-            .filter_map(|r| r.ok().flatten())
-            .map(|pdu| {
-                Ok::<_, Error>((
+
+        let mut result = HashMap::new();
+        let mut i = 0;
+        for compressed in full_state {
+            let (_, eventid) = self.parse_compressed_state_event(compressed)?;
+            if let Some(pdu) = self.get_pdu(&eventid)? {
+                result.insert(
                     (
                         pdu.kind.to_string().into(),
                         pdu.state_key
@@ -182,10 +189,16 @@ impl Rooms {
                             .clone(),
                     ),
                     pdu,
-                ))
-            })
-            .filter_map(|r| r.ok())
-            .collect())
+                );
+            }
+
+            i += 1;
+            if i % 100 == 0 {
+                tokio::task::yield_now().await;
+            }
+        }
+
+        Ok(result)
     }
 
     /// Returns a single PDU from `room_id` with key (`event_type`, `state_key`).
@@ -228,7 +241,6 @@ impl Rooms {
     }
 
     /// Returns the state hash for this pdu.
-    #[tracing::instrument(skip(self))]
     pub fn pdu_shortstatehash(&self, event_id: &EventId) -> Result<Option<u64>> {
         self.eventid_shorteventid
             .get(event_id.as_bytes())?
@@ -531,7 +543,6 @@ impl Rooms {
         }
     }
 
-    #[tracing::instrument(skip(self, globals))]
     pub fn compress_state_event(
         &self,
         shortstatekey: u64,
@@ -548,7 +559,6 @@ impl Rooms {
     }
 
     /// Returns shortstatekey, event id
-    #[tracing::instrument(skip(self, compressed_event))]
     pub fn parse_compressed_state_event(
         &self,
         compressed_event: CompressedStateEvent,
@@ -707,7 +717,6 @@ impl Rooms {
     }
 
     /// Returns (shortstatehash, already_existed)
-    #[tracing::instrument(skip(self, globals))]
     fn get_or_create_shortstatehash(
         &self,
         state_hash: &StateHashId,
@@ -728,7 +737,6 @@ impl Rooms {
         })
     }
 
-    #[tracing::instrument(skip(self, globals))]
     pub fn get_or_create_shorteventid(
         &self,
         event_id: &EventId,
@@ -759,7 +767,6 @@ impl Rooms {
         Ok(short)
     }
 
-    #[tracing::instrument(skip(self))]
     pub fn get_shortroomid(&self, room_id: &RoomId) -> Result<Option<u64>> {
         self.roomid_shortroomid
             .get(room_id.as_bytes())?
@@ -770,7 +777,6 @@ impl Rooms {
             .transpose()
     }
 
-    #[tracing::instrument(skip(self))]
     pub fn get_shortstatekey(
         &self,
         event_type: &StateEventType,
@@ -808,7 +814,6 @@ impl Rooms {
         Ok(short)
     }
 
-    #[tracing::instrument(skip(self, globals))]
     pub fn get_or_create_shortroomid(
         &self,
         room_id: &RoomId,
@@ -826,7 +831,6 @@ impl Rooms {
         })
     }
 
-    #[tracing::instrument(skip(self, globals))]
     pub fn get_or_create_shortstatekey(
         &self,
         event_type: &StateEventType,
@@ -867,7 +871,6 @@ impl Rooms {
         Ok(short)
     }
 
-    #[tracing::instrument(skip(self))]
     pub fn get_eventid_from_short(&self, shorteventid: u64) -> Result<Arc<EventId>> {
         if let Some(id) = self
             .shorteventid_cache
@@ -896,7 +899,6 @@ impl Rooms {
         Ok(event_id)
     }
 
-    #[tracing::instrument(skip(self))]
     pub fn get_statekey_from_short(&self, shortstatekey: u64) -> Result<(StateEventType, String)> {
         if let Some(id) = self
             .shortstatekey_cache
@@ -940,12 +942,12 @@ impl Rooms {
 
     /// Returns the full room state.
     #[tracing::instrument(skip(self))]
-    pub fn room_state_full(
+    pub async fn room_state_full(
         &self,
         room_id: &RoomId,
     ) -> Result<HashMap<(StateEventType, String), Arc<PduEvent>>> {
         if let Some(current_shortstatehash) = self.current_shortstatehash(room_id)? {
-            self.state_full(current_shortstatehash)
+            self.state_full(current_shortstatehash).await
         } else {
             Ok(HashMap::new())
         }
@@ -982,14 +984,12 @@ impl Rooms {
     }
 
     /// Returns the `count` of this pdu's id.
-    #[tracing::instrument(skip(self))]
     pub fn pdu_count(&self, pdu_id: &[u8]) -> Result<u64> {
         utils::u64_from_bytes(&pdu_id[pdu_id.len() - size_of::<u64>()..])
             .map_err(|_| Error::bad_database("PDU has invalid count bytes."))
     }
 
     /// Returns the `count` of this pdu's id.
-    #[tracing::instrument(skip(self))]
     pub fn get_pdu_count(&self, event_id: &EventId) -> Result<Option<u64>> {
         self.eventid_pduid
             .get(event_id.as_bytes())?
@@ -1018,7 +1018,6 @@ impl Rooms {
     }
 
     /// Returns the json of a pdu.
-    #[tracing::instrument(skip(self))]
     pub fn get_pdu_json(&self, event_id: &EventId) -> Result<Option<CanonicalJsonObject>> {
         self.eventid_pduid
             .get(event_id.as_bytes())?
@@ -1037,7 +1036,6 @@ impl Rooms {
     }
 
     /// Returns the json of a pdu.
-    #[tracing::instrument(skip(self))]
     pub fn get_outlier_pdu_json(&self, event_id: &EventId) -> Result<Option<CanonicalJsonObject>> {
         self.eventid_outlierpdu
             .get(event_id.as_bytes())?
@@ -1048,7 +1046,6 @@ impl Rooms {
     }
 
     /// Returns the json of a pdu.
-    #[tracing::instrument(skip(self))]
     pub fn get_non_outlier_pdu_json(
         &self,
         event_id: &EventId,
@@ -1068,7 +1065,6 @@ impl Rooms {
     }
 
     /// Returns the pdu's id.
-    #[tracing::instrument(skip(self))]
     pub fn get_pdu_id(&self, event_id: &EventId) -> Result<Option<Vec<u8>>> {
         self.eventid_pduid.get(event_id.as_bytes())
     }
@@ -1076,7 +1072,6 @@ impl Rooms {
     /// Returns the pdu.
     ///
     /// Checks the `eventid_outlierpdu` Tree if not found in the timeline.
-    #[tracing::instrument(skip(self))]
     pub fn get_non_outlier_pdu(&self, event_id: &EventId) -> Result<Option<PduEvent>> {
         self.eventid_pduid
             .get(event_id.as_bytes())?
@@ -1095,7 +1090,6 @@ impl Rooms {
     /// Returns the pdu.
     ///
     /// Checks the `eventid_outlierpdu` Tree if not found in the timeline.
-    #[tracing::instrument(skip(self))]
     pub fn get_pdu(&self, event_id: &EventId) -> Result<Option<Arc<PduEvent>>> {
         if let Some(p) = self.pdu_cache.lock().unwrap().get_mut(event_id) {
             return Ok(Some(Arc::clone(p)));
@@ -1132,7 +1126,6 @@ impl Rooms {
     /// Returns the pdu.
     ///
     /// This does __NOT__ check the outliers `Tree`.
-    #[tracing::instrument(skip(self))]
     pub fn get_pdu_from_id(&self, pdu_id: &[u8]) -> Result<Option<PduEvent>> {
         self.pduid_pdu.get(pdu_id)?.map_or(Ok(None), |pdu| {
             Ok(Some(
@@ -1143,7 +1136,6 @@ impl Rooms {
     }
 
     /// Returns the pdu as a `BTreeMap<String, CanonicalJsonValue>`.
-    #[tracing::instrument(skip(self))]
     pub fn get_pdu_json_from_id(&self, pdu_id: &[u8]) -> Result<Option<CanonicalJsonObject>> {
         self.pduid_pdu.get(pdu_id)?.map_or(Ok(None), |pdu| {
             Ok(Some(
@@ -1232,7 +1224,6 @@ impl Rooms {
     }
 
     /// Returns the pdu from the outlier tree.
-    #[tracing::instrument(skip(self))]
     pub fn get_pdu_outlier(&self, event_id: &EventId) -> Result<Option<PduEvent>> {
         self.eventid_outlierpdu
             .get(event_id.as_bytes())?

src/server_server.rs

@@ -691,7 +691,7 @@ pub async fn send_transaction_message_route(
                 .roomid_mutex_federation
                 .write()
                 .unwrap()
-                .entry(room_id.clone())
+                .entry(room_id.to_owned())
                 .or_default(),
         );
         let mutex_lock = mutex.lock().await;
@@ -1054,6 +1054,25 @@ pub(crate) async fn handle_incoming_pdu<'a>(
             }
         }
 
+        if let Some((time, tries)) = db
+            .globals
+            .bad_event_ratelimiter
+            .read()
+            .unwrap()
+            .get(&*prev_id)
+        {
+            // Exponential backoff
+            let mut min_elapsed_duration = Duration::from_secs(5 * 60) * (*tries) * (*tries);
+            if min_elapsed_duration > Duration::from_secs(60 * 60 * 24) {
+                min_elapsed_duration = Duration::from_secs(60 * 60 * 24);
+            }
+
+            if time.elapsed() < min_elapsed_duration {
+                info!("Backing off from {}", prev_id);
+                continue;
+            }
+        }
+
         if errors >= 5 {
             break;
         }
@@ -1068,7 +1087,6 @@ pub(crate) async fn handle_incoming_pdu<'a>(
                 .write()
                 .unwrap()
                 .insert(room_id.to_owned(), ((*prev_id).to_owned(), start_time));
-            let event_id = pdu.event_id.clone();
             if let Err(e) = upgrade_outlier_to_timeline_pdu(
                 pdu,
                 json,
@@ -1081,7 +1099,21 @@ pub(crate) async fn handle_incoming_pdu<'a>(
             .await
             {
                 errors += 1;
-                warn!("Prev event {} failed: {}", event_id, e);
+                warn!("Prev event {} failed: {}", prev_id, e);
+                match db
+                    .globals
+                    .bad_event_ratelimiter
+                    .write()
+                    .unwrap()
+                    .entry((*prev_id).to_owned())
+                {
+                    hash_map::Entry::Vacant(e) => {
+                        e.insert((Instant::now(), 1));
+                    }
+                    hash_map::Entry::Occupied(mut e) => {
+                        *e.get_mut() = (Instant::now(), e.get().1 + 1)
+                    }
+                }
             }
             let elapsed = start_time.elapsed();
             db.globals
@@ -1091,7 +1123,7 @@ pub(crate) async fn handle_incoming_pdu<'a>(
                 .remove(&room_id.to_owned());
             warn!(
                 "Handling prev event {} took {}m{}s",
-                event_id,
+                prev_id,
                 elapsed.as_secs() / 60,
                 elapsed.as_secs() % 60
             );
@@ -1321,8 +1353,11 @@ async fn upgrade_outlier_to_timeline_pdu(
             .pdu_shortstatehash(prev_event)
             .map_err(|_| "Failed talking to db".to_owned())?;
 
-        let state =
-            prev_event_sstatehash.map(|shortstatehash| db.rooms.state_full_ids(shortstatehash));
+        let state = if let Some(shortstatehash) = prev_event_sstatehash {
+            Some(db.rooms.state_full_ids(shortstatehash).await)
+        } else {
+            None
+        };
 
         if let Some(Ok(mut state)) = state {
             info!("Using cached state");
@@ -1378,6 +1413,7 @@ async fn upgrade_outlier_to_timeline_pdu(
                 let mut leaf_state: BTreeMap<_, _> = db
                     .rooms
                     .state_full_ids(sstatehash)
+                    .await
                     .map_err(|_| "Failed to ask db for room state.".to_owned())?;
 
                 if let Some(state_key) = &prev_event.state_key {
@@ -1409,6 +1445,7 @@ async fn upgrade_outlier_to_timeline_pdu(
 
                 auth_chain_sets.push(
                     get_auth_chain(room_id, starting_events, db)
+                        .await
                         .map_err(|_| "Failed to load auth chain.".to_owned())?
                         .collect(),
                 );
@@ -1535,6 +1572,7 @@ async fn upgrade_outlier_to_timeline_pdu(
     let state_at_incoming_event =
         state_at_incoming_event.expect("we always set this to some above");
 
+    info!("Starting auth check");
     // 11. Check the auth of the event passes based on the state of the event
     let check_result = state_res::event_auth::auth_check(
         &room_version,
@@ -1554,7 +1592,7 @@ async fn upgrade_outlier_to_timeline_pdu(
     if !check_result {
         return Err("Event has failed auth check with state at the event.".into());
     }
-    info!("Auth check succeeded.");
+    info!("Auth check succeeded");
 
     // We start looking at current room state now, so lets lock the room
 
@@ -1570,6 +1608,7 @@ async fn upgrade_outlier_to_timeline_pdu(
 
     // Now we calculate the set of extremities this room has after the incoming event has been
     // applied. We start with the previous extremities (aka leaves)
+    info!("Calculating extremities");
     let mut extremities = db
         .rooms
         .get_pdu_leaves(room_id)
@@ -1585,16 +1624,18 @@ async fn upgrade_outlier_to_timeline_pdu(
     // Only keep those extremities were not referenced yet
     extremities.retain(|id| !matches!(db.rooms.is_event_referenced(room_id, id), Ok(true)));
 
-    let current_sstatehash = db
-        .rooms
-        .current_shortstatehash(room_id)
-        .map_err(|_| "Failed to load current state hash.".to_owned())?
-        .expect("every room has state");
+    info!("Compressing state at event");
+    let state_ids_compressed = state_at_incoming_event
+        .iter()
+        .map(|(shortstatekey, id)| {
+            db.rooms
+                .compress_state_event(*shortstatekey, id, &db.globals)
+                .map_err(|_| "Failed to compress_state_event".to_owned())
+        })
+        .collect::<Result<_, _>>()?;
 
-    let current_state_ids = db
-        .rooms
-        .state_full_ids(current_sstatehash)
-        .map_err(|_| "Failed to load room state.")?;
+    // 13. Check if the event passes auth based on the "current state" of the room, if not "soft fail" it
+    info!("Starting soft fail auth check");
 
     let auth_events = db
         .rooms
@@ -1607,18 +1648,6 @@ async fn upgrade_outlier_to_timeline_pdu(
         )
         .map_err(|_| "Failed to get_auth_events.".to_owned())?;
 
-    let state_ids_compressed = state_at_incoming_event
-        .iter()
-        .map(|(shortstatekey, id)| {
-            db.rooms
-                .compress_state_event(*shortstatekey, id, &db.globals)
-                .map_err(|_| "Failed to compress_state_event".to_owned())
-        })
-        .collect::<Result<_, _>>()?;
-
-    // 13. Check if the event passes auth based on the "current state" of the room, if not "soft fail" it
-    info!("Starting soft fail auth check");
-
     let soft_fail = !state_res::event_auth::auth_check(
         &room_version,
         &incoming_pdu,
@@ -1651,6 +1680,19 @@ async fn upgrade_outlier_to_timeline_pdu(
     }
 
     if incoming_pdu.state_key.is_some() {
+        info!("Loading current room state ids");
+        let current_sstatehash = db
+            .rooms
+            .current_shortstatehash(room_id)
+            .map_err(|_| "Failed to load current state hash.".to_owned())?
+            .expect("every room has state");
+
+        let current_state_ids = db
+            .rooms
+            .state_full_ids(current_sstatehash)
+            .await
+            .map_err(|_| "Failed to load room state.")?;
+
         info!("Preparing for stateres to derive new room state");
         let mut extremity_sstatehashes = HashMap::new();
 
@@ -1738,6 +1780,7 @@ async fn upgrade_outlier_to_timeline_pdu(
                         state.iter().map(|(_, id)| id.clone()).collect(),
                         db,
                     )
+                    .await
                     .map_err(|_| "Failed to load auth chain.".to_owned())?
                     .collect(),
                 );
@@ -1899,11 +1942,17 @@ pub(crate) fn fetch_and_handle_outliers<'a>(
             let mut todo_auth_events = vec![Arc::clone(id)];
             let mut events_in_reverse_order = Vec::new();
             let mut events_all = HashSet::new();
+            let mut i = 0;
             while let Some(next_id) = todo_auth_events.pop() {
                 if events_all.contains(&next_id) {
                     continue;
                 }
 
+                i += 1;
+                if i % 100 == 0 {
+                    tokio::task::yield_now().await;
+                }
+
                 if let Ok(Some(_)) = db.rooms.get_pdu(&next_id) {
                     trace!("Found {} in db", id);
                     continue;
@@ -2242,7 +2291,7 @@ fn append_incoming_pdu<'a>(
 }
 
 #[tracing::instrument(skip(starting_events, db))]
-pub(crate) fn get_auth_chain<'a>(
+pub(crate) async fn get_auth_chain<'a>(
     room_id: &RoomId,
     starting_events: Vec<Arc<EventId>>,
     db: &'a Database,
@@ -2251,10 +2300,15 @@ pub(crate) fn get_auth_chain<'a>(
 
     let mut buckets = vec![BTreeSet::new(); NUM_BUCKETS];
 
+    let mut i = 0;
     for id in starting_events {
         let short = db.rooms.get_or_create_shorteventid(&id, &db.globals)?;
         let bucket_id = (short % NUM_BUCKETS as u64) as usize;
         buckets[bucket_id].insert((short, id.clone()));
+        i += 1;
+        if i % 100 == 0 {
+            tokio::task::yield_now().await;
+        }
     }
 
     let mut full_auth_chain = HashSet::new();
@@ -2277,6 +2331,7 @@ pub(crate) fn get_auth_chain<'a>(
         let mut chunk_cache = HashSet::new();
         let mut hits2 = 0;
         let mut misses2 = 0;
+        let mut i = 0;
         for (sevent_id, event_id) in chunk {
             if let Some(cached) = db.rooms.get_auth_chain_from_cache(&[sevent_id])? {
                 hits2 += 1;
@@ -2292,6 +2347,11 @@ pub(crate) fn get_auth_chain<'a>(
                     auth_chain.len()
                 );
                 chunk_cache.extend(auth_chain.iter());
+
+                i += 1;
+                if i % 100 == 0 {
+                    tokio::task::yield_now().await;
+                }
             };
         }
         println!(
@@ -2512,7 +2572,7 @@ pub async fn get_event_authorization_route(
     let room_id = <&RoomId>::try_from(room_id_str)
         .map_err(|_| Error::bad_database("Invalid room id field in event in database"))?;
 
-    let auth_chain_ids = get_auth_chain(room_id, vec![Arc::from(&*body.event_id)], &db)?;
+    let auth_chain_ids = get_auth_chain(room_id, vec![Arc::from(&*body.event_id)], &db).await?;
 
     Ok(get_event_authorization::v1::Response {
         auth_chain: auth_chain_ids
@@ -2557,7 +2617,8 @@ pub async fn get_room_state_route(
 
     let pdus = db
         .rooms
-        .state_full_ids(shortstatehash)?
+        .state_full_ids(shortstatehash)
+        .await?
         .into_iter()
         .map(|(_, id)| {
             PduEvent::convert_to_outgoing_federation_event(
@@ -2566,7 +2627,8 @@ pub async fn get_room_state_route(
         })
         .collect();
 
-    let auth_chain_ids = get_auth_chain(&body.room_id, vec![Arc::from(&*body.event_id)], &db)?;
+    let auth_chain_ids =
+        get_auth_chain(&body.room_id, vec![Arc::from(&*body.event_id)], &db).await?;
 
     Ok(get_room_state::v1::Response {
         auth_chain: auth_chain_ids
@@ -2616,12 +2678,14 @@ pub async fn get_room_state_ids_route(
 
     let pdu_ids = db
         .rooms
-        .state_full_ids(shortstatehash)?
+        .state_full_ids(shortstatehash)
+        .await?
         .into_iter()
         .map(|(_, id)| (*id).to_owned())
         .collect();
 
-    let auth_chain_ids = get_auth_chain(&body.room_id, vec![Arc::from(&*body.event_id)], &db)?;
+    let auth_chain_ids =
+        get_auth_chain(&body.room_id, vec![Arc::from(&*body.event_id)], &db).await?;
 
     Ok(get_room_state_ids::v1::Response {
         auth_chain_ids: auth_chain_ids.map(|id| (*id).to_owned()).collect(),
@@ -2927,12 +2991,13 @@ async fn create_join_event(
         ))?;
     drop(mutex_lock);
 
-    let state_ids = db.rooms.state_full_ids(shortstatehash)?;
+    let state_ids = db.rooms.state_full_ids(shortstatehash).await?;
     let auth_chain_ids = get_auth_chain(
         room_id,
         state_ids.iter().map(|(_, id)| id.clone()).collect(),
         db,
-    )?;
+    )
+    .await?;
 
     let servers = db
         .rooms