finished async migration

Cargo.lock

@@ -132,6 +132,26 @@ version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3c07dab4369547dbe5114677b33fbbf724971019f3818172d59a97a61c774ffd"
 
+[[package]]
+name = "async-lock"
+version = "2.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "287272293e9d8c41773cec55e365490fe034813a2f172f502d6ddcf75b2f582b"
+dependencies = [
+ "event-listener",
+]
+
+[[package]]
+name = "async-timer"
+version = "0.7.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ba5fa6ed76cb2aa820707b4eb9ec46f42da9ce70b0eafab5e5e34942b38a44d5"
+dependencies = [
+ "libc",
+ "wasm-bindgen",
+ "winapi",
+]
+
 [[package]]
 name = "async-trait"
 version = "0.1.77"
@@ -700,6 +720,12 @@ dependencies = [
  "windows-sys 0.52.0",
 ]
 
+[[package]]
+name = "event-listener"
+version = "2.5.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0206175f82b8d6bf6652ff7d71a1e27fd2e4efde587fd368662814d6ec1d9ce0"
+
 [[package]]
 name = "fastrand"
 version = "2.0.1"
@@ -1171,6 +1197,7 @@ dependencies = [
  "ctrlc",
  "pkarr",
  "pknames_core",
+ "retainer",
  "simple-dns",
  "tokio",
  "ttl_cache",
@@ -1344,6 +1371,18 @@ version = "0.8.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c08c74e62047bb2de4ff487b251e4a92e24f48745648451635cec7d591162d9f"
 
+[[package]]
+name = "retainer"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "df8c01a8276c14d0f8d51ebcf8a48f0748f9f73f5f6b29e688126e6a52bcb145"
+dependencies = [
+ "async-lock",
+ "async-timer",
+ "log",
+ "rand",
+]
+
 [[package]]
 name = "rmp"
 version = "0.8.12"

Cargo.toml

@@ -18,3 +18,4 @@ chrono = "0.4.33"
 tokio = { version = "1.36.0", features = ["full"] }
 async-trait = "0.1.77"
 anyhow = "1.0.79"
+retainer = "0.3.0"

src/main.rs

@@ -15,9 +15,9 @@ struct MyHandler {
 }
 
 impl MyHandler {
-    pub fn new(max_cache_ttl: u64, config_dir_path: &str) -> Self {
+    pub async fn new(max_cache_ttl: u64, config_dir_path: &str) -> Self {
         Self {
-            pkarr: PknamesResolver::new(max_cache_ttl, config_dir_path),
+            pkarr: PknamesResolver::new(max_cache_ttl, config_dir_path).await,
         }
     }
 }
@@ -131,7 +131,7 @@ async fn main() -> Result<(), Box<dyn Error>> {
     }));
 
     let anydns = Builder::new()
-        .handler(MyHandler::new(cache_ttl, directory))
+        .handler(MyHandler::new(cache_ttl, directory).await)
         .verbose(verbose)
         .icann_resolver(forward)
         .listen(socket)

src/pkarr_cache.rs

@@ -1,28 +1,38 @@
-use std::time::Duration;
+use std::{sync::Arc, time::Duration};
 
 use pkarr::{dns::Packet, PublicKey};
-use ttl_cache::TtlCache;
+use retainer::Cache;
+use tokio::{sync::Mutex, task::JoinHandle};
+
 
 /**
  * Pkarr record ttl cache
  */
+#[derive(Clone)]
 pub struct PkarrPacketTtlCache {
-    cache: TtlCache<String, Vec<u8>>,
+    cache: Arc<Cache<String, Vec<u8>>>,
     max_cache_ttl: u64,
+    monitor: Arc<Mutex<JoinHandle<()>>>
 }
 
 impl PkarrPacketTtlCache {
-    pub fn new(max_cache_ttl: u64) -> Self {
+    pub async fn new(max_cache_ttl: u64) -> Self {
+        let cache: Arc<Cache<String, Vec<u8>>> = Arc::new(Cache::new());
+        let monitor = tokio::spawn(async move {
+            cache.monitor(4, 0.25, Duration::from_secs(3)).await
+        });
+        let monitor = Arc::new(Mutex::new(monitor));
         PkarrPacketTtlCache {
-            cache: TtlCache::new(100),
+            cache: Arc::new(Cache::new()),
             max_cache_ttl,
+            monitor
         }
     }
 
     /**
      * Adds packet and caches it for the ttl the least long lived answer is valid for.
      */
-    pub fn add(&mut self, pubkey: PublicKey, reply: Vec<u8>) {
+    pub async fn add(&mut self, pubkey: PublicKey, reply: Vec<u8>) {
         let default_ttl = 1200;
         let packet = Packet::parse(&reply).unwrap();
         let min_ttl = packet
@@ -36,11 +46,15 @@ impl PkarrPacketTtlCache {
         let ttl = ttl.min(self.max_cache_ttl);
         let ttl = Duration::from_secs(ttl as u64);
 
-        self.cache.insert(pubkey.to_z32(), reply, ttl);
+        self.cache.insert(pubkey.to_z32(), reply, ttl).await;
     }
 
-    pub fn get(&self, pubkey: &PublicKey) -> Option<Vec<u8>> {
+    pub async fn get(&self, pubkey: &PublicKey) -> Option<Vec<u8>> {
         let z32 = pubkey.to_z32();
-        self.cache.get(&z32).map(|value| value.clone())
+        self.cache.get(&z32).await.map(|value| value.clone())
+    }
+
+    pub async fn stop(self) {
+        self.monitor.lock().await.abort();
     }
 }

src/pkarr_resolver.rs

@@ -1,6 +1,4 @@
-use std::{
-    sync::{Arc, Mutex},
-};
+use std::sync::{Arc, Mutex};
 use anyhow::anyhow;
 
 use crate::{packet_lookup::resolve_query, pkarr_cache::PkarrPacketTtlCache};
@@ -25,14 +23,14 @@ impl SignedPacketTimestamp for SignedPacket {
 #[derive(Clone)]
 pub struct PkarrResolver {
     client: PkarrClient,
-    cache: Arc<Mutex<PkarrPacketTtlCache>>,
+    cache: PkarrPacketTtlCache,
 }
 
 impl PkarrResolver {
-    pub fn new(max_cache_ttl: u64) -> Self {
+    pub async fn new(max_cache_ttl: u64) -> Self {
         Self {
             client: PkarrClient::new(),
-            cache: Arc::new(Mutex::new(PkarrPacketTtlCache::new(max_cache_ttl))),
+            cache: PkarrPacketTtlCache::new(max_cache_ttl).await,
         }
     }
 
@@ -50,8 +48,7 @@ impl PkarrResolver {
     }
 
     async fn resolve_pubkey_respect_cache(&mut self, pubkey: &PublicKey) -> Option<Vec<u8>> {
-        let cache = self.cache.lock().unwrap();
-        let cached_opt = cache.get(pubkey);
+        let cached_opt = self.cache.get(pubkey).await;
         if cached_opt.is_some() {
             let reply_bytes = cached_opt.unwrap();
             return Some(reply_bytes);
@@ -63,8 +60,7 @@ impl PkarrResolver {
         };
         let signed_packet = packet_option.unwrap();
         let reply_bytes = signed_packet.packet().build_bytes_vec_compressed().unwrap();
-        let mut cache = self.cache.lock().unwrap();
-        cache.add(pubkey.clone(), reply_bytes.clone());
+        self.cache.add(pubkey.clone(), reply_bytes.clone()).await;
         Some(reply_bytes)
     }
 
@@ -168,7 +164,7 @@ mod tests {
         );
         query.questions.push(question);
 
-        let mut resolver = PkarrResolver::new(0);
+        let mut resolver = PkarrResolver::new(0).await;
         let result = resolver.resolve(&query.build_bytes_vec_compressed().unwrap()).await;
         assert!(result.is_ok());
         let reply_bytes = result.unwrap();
@@ -195,7 +191,7 @@ mod tests {
             true,
         );
         query.questions.push(question);
-        let mut resolver = PkarrResolver::new(0);
+        let mut resolver = PkarrResolver::new(0).await;
         let result = resolver.resolve(&query.build_bytes_vec_compressed().unwrap()).await;
         assert!(result.is_ok());
         let reply_bytes = result.unwrap();
@@ -219,7 +215,7 @@ mod tests {
             true,
         );
         query.questions.push(question);
-        let mut resolver = PkarrResolver::new(0);
+        let mut resolver = PkarrResolver::new(0).await;
         let result = resolver.resolve(&query.build_bytes_vec_compressed().unwrap()).await;
         assert!(result.is_err());
         // println!("{}", result.unwrap_err());
@@ -244,7 +240,7 @@ mod tests {
     async fn pkarr_invalid_packet1() {
         let pubkey = PkarrResolver::parse_pkarr_uri("7fmjpcuuzf54hw18bsgi3zihzyh4awseeuq5tmojefaezjbd64cy").unwrap();
 
-        let mut resolver = PkarrResolver::new(0);
+        let mut resolver = PkarrResolver::new(0).await;
         let _result = resolver.resolve_pubkey_respect_cache(&pubkey).await;
         // assert!(result.is_some());
     }

src/pknames_resolver.rs

@@ -13,9 +13,9 @@ pub struct PknamesResolver {
 }
 
 impl PknamesResolver {
-    pub fn new(max_cache_ttl: u64, config_dir_path: &str) -> Self {
+    pub async fn new(max_cache_ttl: u64, config_dir_path: &str) -> Self {
         PknamesResolver {
-            pkarr: PkarrResolver::new(max_cache_ttl),
+            pkarr: PkarrResolver::new(max_cache_ttl).await,
             config_dir_path: config_dir_path.to_string(),
         }
     }
@@ -80,7 +80,7 @@ mod tests {
 
     #[tokio::test]
     async fn query_pubkey() {
-        let mut pknames = PknamesResolver::new(1, "~/.pknames");
+        let mut pknames = PknamesResolver::new(1, "~/.pknames").await;
 
         let mut query = Packet::new_query(0);
         let name = Name::new("pknames.p2p").unwrap();