seems ok, but need to optimize for database write and read in the future

with cache etc

src/rendezvous_server.rs

@@ -29,6 +29,17 @@ struct Peer {
     last_reg_time: Instant,
 }
 
+impl Default for Peer {
+    fn default() -> Self {
+        Self {
+            socket_addr: "0.0.0.0:0".parse().unwrap(),
+            last_reg_time: Instant::now()
+                .checked_sub(std::time::Duration::from_secs(3600))
+                .unwrap(),
+        }
+    }
+}
+
 #[derive(Debug, Serialize, Deserialize, Default)]
 struct PeerSerde {
     #[serde(default)]
@@ -45,13 +56,23 @@ impl PeerMap {
     fn new() -> ResultType<Self> {
         Ok(Self {
             map: Default::default(),
-            db: super::SledAsync::new("./sled.db")?,
+            db: super::SledAsync::new("./sled.db", true)?,
         })
     }
 
     #[inline]
     fn insert(&mut self, key: String, peer: Peer) {
-        if self.map.write().unwrap().insert(key, peer).is_none() {}
+        let ip = peer.socket_addr.ip();
+        if self
+            .map
+            .write()
+            .unwrap()
+            .insert(key.clone(), peer)
+            .is_none()
+        {
+            let ip = ip.to_string();
+            self.db.insert(key, PeerSerde { ip });
+        }
     }
 
     #[inline]
@@ -61,7 +82,7 @@ impl PeerMap {
             return p;
         } else {
             if let Some(_) = self.db.get(key).await {
-                // to-do
+                return Some(Peer::default());
             }
         }
         None

src/sled_async.rs

@@ -18,11 +18,15 @@ pub struct SledAsync {
 }
 
 impl SledAsync {
-    pub fn new(path: &str) -> ResultType<Self> {
-        Ok(Self {
+    pub fn new(path: &str, run: bool) -> ResultType<Self> {
+        let mut res = Self {
             db: sled::open(path)?,
             tx: None,
-        })
+        };
+        if run {
+            res.run();
+        }
+        Ok(res)
     }
 
     pub fn run(&mut self) -> std::thread::JoinHandle<()> {
@@ -31,6 +35,7 @@ impl SledAsync {
         let db = self.db.clone();
         std::thread::spawn(move || {
             Self::io_loop(db, rx);
+            log::debug!("Exit SledAsync loop");
         })
     }
 
@@ -55,6 +60,13 @@ impl SledAsync {
         }
     }
 
+    pub fn _close(self, j: std::thread::JoinHandle<()>) {
+        if let Some(tx) = &self.tx {
+            allow_err!(tx.send(Action::Close));
+        }
+        allow_err!(j.join());
+    }
+
     pub async fn get(&mut self, key: String) -> Option<sled::IVec> {
         if let Some(tx) = &self.tx {
             let (tx_once, mut rx) = mpsc::channel::<Option<sled::IVec>>(1);
@@ -67,7 +79,7 @@ impl SledAsync {
     }
 
     #[inline]
-    pub fn deserialize<'a, T: serde::Deserialize<'a>>(v: &'a Option<sled::IVec>) -> Option<T> {
+    pub fn _deserialize<'a, T: serde::Deserialize<'a>>(v: &'a Option<sled::IVec>) -> Option<T> {
         if let Some(v) = v {
             if let Ok(v) = std::str::from_utf8(v) {
                 if let Ok(v) = serde_json::from_str::<T>(&v) {
@@ -78,9 +90,9 @@ impl SledAsync {
         None
     }
 
-    pub fn insert<'a, T: serde::Serialize>(&mut self, key: String, v: &T) {
+    pub fn insert<T: serde::Serialize>(&mut self, key: String, v: T) {
         if let Some(tx) = &self.tx {
-            if let Ok(v) = serde_json::to_vec(v) {
+            if let Ok(v) = serde_json::to_vec(&v) {
                 allow_err!(tx.send(Action::Insert((key, v))));
             }
         }