reorganize stats collector

src/session/stats/connections.rs

@@ -1,44 +0,0 @@
-use std::{
-    collections::HashMap,
-    net::{IpAddr, SocketAddr},
-    sync::RwLock,
-};
-
-/// Count peer connections (for the current server session)
-pub struct Connections(Option<RwLock<HashMap<IpAddr, usize>>>);
-
-impl Connections {
-    pub fn init(is_enabled: bool) -> Self {
-        if is_enabled {
-            Self(Some(RwLock::new(HashMap::with_capacity(100))))
-        } else {
-            Self(None)
-        }
-    }
-
-    pub fn add(&self, peer: &SocketAddr) {
-        if let Some(ref this) = self.0 {
-            this.write()
-                .unwrap()
-                .entry(peer.ip())
-                .and_modify(|c| *c += 1)
-                .or_insert(1);
-        }
-    }
-
-    pub fn count(&self) -> usize {
-        if let Some(ref this) = self.0 {
-            this.read().unwrap().len()
-        } else {
-            0
-        }
-    }
-
-    pub fn total(&self) -> usize {
-        if let Some(ref this) = self.0 {
-            this.read().unwrap().values().sum()
-        } else {
-            0
-        }
-    }
-}