delete unused `servername_ratelimiter` semaphore now

Signed-off-by: strawberry <strawberry@puppygock.gay>

src/service/globals/mod.rs

@@ -25,7 +25,7 @@
 	DeviceId, OwnedDeviceId, OwnedEventId, OwnedRoomId, OwnedServerName, OwnedServerSigningKeyId, OwnedUserId,
 	RoomVersionId, ServerName, UserId,
 };
-use tokio::sync::{broadcast, watch::Receiver, Mutex, RwLock, Semaphore};
+use tokio::sync::{broadcast, watch::Receiver, Mutex, RwLock};
 use tracing::{error, info, trace};
 use tracing_subscriber::{EnvFilter, Registry};
 use url::Url;
@@ -57,7 +57,6 @@ pub(crate) struct Service<'a> {
 	pub(crate) bad_event_ratelimiter: Arc<RwLock<HashMap<OwnedEventId, RateLimitState>>>,
 	pub(crate) bad_signature_ratelimiter: Arc<RwLock<HashMap<Vec<String>, RateLimitState>>>,
 	pub(crate) bad_query_ratelimiter: Arc<RwLock<HashMap<OwnedServerName, RateLimitState>>>,
-	pub(crate) servername_ratelimiter: Arc<RwLock<HashMap<OwnedServerName, Arc<Semaphore>>>>,
 	pub(crate) sync_receivers: RwLock<HashMap<(OwnedUserId, OwnedDeviceId), SyncHandle>>,
 	pub(crate) roomid_mutex_insert: RwLock<HashMap<OwnedRoomId, Arc<Mutex<()>>>>,
 	pub(crate) roomid_mutex_state: RwLock<HashMap<OwnedRoomId, Arc<Mutex<()>>>>,
@@ -161,7 +160,6 @@ pub(crate) fn load(
 			bad_event_ratelimiter: Arc::new(RwLock::new(HashMap::new())),
 			bad_signature_ratelimiter: Arc::new(RwLock::new(HashMap::new())),
 			bad_query_ratelimiter: Arc::new(RwLock::new(HashMap::new())),
-			servername_ratelimiter: Arc::new(RwLock::new(HashMap::new())),
 			roomid_mutex_state: RwLock::new(HashMap::new()),
 			roomid_mutex_insert: RwLock::new(HashMap::new()),
 			roomid_mutex_federation: RwLock::new(HashMap::new()),

src/service/mod.rs

@@ -211,7 +211,6 @@ async fn memory_usage(&self) -> String {
 			.len();
 		let resolver_overrides_cache = self.globals.resolver.overrides.read().unwrap().len();
 		let resolver_destinations_cache = self.globals.resolver.destinations.read().await.len();
-		let servername_ratelimiter = self.globals.servername_ratelimiter.read().await.len();
 		let bad_event_ratelimiter = self.globals.bad_event_ratelimiter.read().await.len();
 		let bad_query_ratelimiter = self.globals.bad_query_ratelimiter.read().await.len();
 		let bad_signature_ratelimiter = self.globals.bad_signature_ratelimiter.read().await.len();
@@ -226,7 +225,6 @@ async fn memory_usage(&self) -> String {
 roomid_spacehierarchy_cache: {roomid_spacehierarchy_cache}
 resolver_overrides_cache: {resolver_overrides_cache}
 resolver_destinations_cache: {resolver_destinations_cache}
-servername_ratelimiter: {servername_ratelimiter}
 bad_event_ratelimiter: {bad_event_ratelimiter}
 bad_query_ratelimiter: {bad_query_ratelimiter}
 bad_signature_ratelimiter: {bad_signature_ratelimiter}
@@ -291,15 +289,12 @@ async fn clear_caches(&self, amount: u32) {
 			self.globals.resolver.resolver.clear_cache();
 		}
 		if amount > 8 {
-			self.globals.servername_ratelimiter.write().await.clear();
-		}
-		if amount > 9 {
 			self.globals.bad_event_ratelimiter.write().await.clear();
 		}
-		if amount > 10 {
+		if amount > 9 {
 			self.globals.bad_query_ratelimiter.write().await.clear();
 		}
-		if amount > 11 {
+		if amount > 10 {
 			self.globals.bad_signature_ratelimiter.write().await.clear();
 		}
 	}