p2p: remove net directory

5 files changed, 0 insertions, 400 deletions

diff --git a/p2p/src/net/connection_queue.rs b/p2p/src/net/connection_queue.rs
deleted file mode 100644
index 4c0de28..0000000
--- a/p2p/src/net/connection_queue.rs
+++ /dev/null
@@ -1,52 +0,0 @@
-use std::{collections::VecDeque, sync::Arc};
-
-use smol::{channel::Sender, lock::Mutex};
-
-use karyons_core::async_utils::CondVar;
-
-use karyons_net::Conn;
-
-use crate::net::ConnDirection;
-
-pub struct NewConn {
-    pub direction: ConnDirection,
-    pub conn: Conn,
-    pub disconnect_signal: Sender<()>,
-}
-
-/// Connection queue
-pub struct ConnQueue {
-    queue: Mutex<VecDeque<NewConn>>,
-    conn_available: CondVar,
-}
-
-impl ConnQueue {
-    pub fn new() -> Arc<Self> {
-        Arc::new(Self {
-            queue: Mutex::new(VecDeque::new()),
-            conn_available: CondVar::new(),
-        })
-    }
-
-    /// Push a connection into the queue and wait for the disconnect signal
-    pub async fn handle(&self, conn: Conn, direction: ConnDirection) {
-        let (disconnect_signal, chan) = smol::channel::bounded(1);
-        let new_conn = NewConn {
-            direction,
-            conn,
-            disconnect_signal,
-        };
-        self.queue.lock().await.push_back(new_conn);
-        self.conn_available.signal();
-        let _ = chan.recv().await;
-    }
-
-    /// Receive the next connection in the queue
-    pub async fn next(&self) -> NewConn {
-        let mut queue = self.queue.lock().await;
-        while queue.is_empty() {
-            queue = self.conn_available.wait(queue).await;
-        }
-        queue.pop_front().unwrap()
-    }
-}
diff --git a/p2p/src/net/connector.rs b/p2p/src/net/connector.rs
deleted file mode 100644
index 72dc0d8..0000000
--- a/p2p/src/net/connector.rs
+++ /dev/null
@@ -1,125 +0,0 @@
-use std::{future::Future, sync::Arc};
-
-use log::{trace, warn};
-
-use karyons_core::{
-    async_utils::{Backoff, TaskGroup, TaskResult},
-    Executor,
-};
-use karyons_net::{dial, Conn, Endpoint, NetError};
-
-use crate::{
-    monitor::{ConnEvent, Monitor},
-    Result,
-};
-
-use super::slots::ConnectionSlots;
-
-/// Responsible for creating outbound connections with other peers.
-pub struct Connector {
-    /// Managing spawned tasks.
-    task_group: TaskGroup,
-
-    /// Manages available outbound slots.
-    connection_slots: Arc<ConnectionSlots>,
-
-    /// The maximum number of retries allowed before successfully
-    /// establishing a connection.
-    max_retries: usize,
-
-    /// Responsible for network and system monitoring.
-    monitor: Arc<Monitor>,
-}
-
-impl Connector {
-    /// Creates a new Connector
-    pub fn new(
-        max_retries: usize,
-        connection_slots: Arc<ConnectionSlots>,
-        monitor: Arc<Monitor>,
-    ) -> Arc<Self> {
-        Arc::new(Self {
-            task_group: TaskGroup::new(),
-            monitor,
-            connection_slots,
-            max_retries,
-        })
-    }
-
-    /// Shuts down the connector
-    pub async fn shutdown(&self) {
-        self.task_group.cancel().await;
-    }
-
-    /// Establish a connection to the specified `endpoint`. If the connection
-    /// attempt fails, it performs a backoff and retries until the maximum allowed
-    /// number of retries is exceeded. On a successful connection, it returns a
-    /// `Conn` instance.
-    ///
-    /// This method will block until it finds an available slot.
-    pub async fn connect(&self, endpoint: &Endpoint) -> Result<Conn> {
-        self.connection_slots.wait_for_slot().await;
-        self.connection_slots.add();
-
-        let mut retry = 0;
-        let backoff = Backoff::new(500, 2000);
-        while retry < self.max_retries {
-            let conn_result = dial(endpoint).await;
-
-            if let Ok(conn) = conn_result {
-                self.monitor
-                    .notify(&ConnEvent::Connected(endpoint.clone()).into())
-                    .await;
-                return Ok(conn);
-            }
-
-            self.monitor
-                .notify(&ConnEvent::ConnectRetried(endpoint.clone()).into())
-                .await;
-
-            backoff.sleep().await;
-
-            warn!("try to reconnect {endpoint}");
-            retry += 1;
-        }
-
-        self.monitor
-            .notify(&ConnEvent::ConnectFailed(endpoint.clone()).into())
-            .await;
-
-        self.connection_slots.remove().await;
-        Err(NetError::Timeout.into())
-    }
-
-    /// Establish a connection to the given `endpoint`. For each new connection,
-    /// it invokes the provided `callback`, and pass the connection to the callback.
-    pub async fn connect_with_cback<'a, Fut>(
-        self: &Arc<Self>,
-        ex: Executor<'a>,
-        endpoint: &Endpoint,
-        callback: impl FnOnce(Conn) -> Fut + Send + 'a,
-    ) -> Result<()>
-    where
-        Fut: Future<Output = Result<()>> + Send + 'a,
-    {
-        let conn = self.connect(endpoint).await?;
-
-        let selfc = self.clone();
-        let endpoint = endpoint.clone();
-        let on_disconnect = |res| async move {
-            if let TaskResult::Completed(Err(err)) = res {
-                trace!("Outbound connection dropped: {err}");
-            }
-            selfc
-                .monitor
-                .notify(&ConnEvent::Disconnected(endpoint.clone()).into())
-                .await;
-            selfc.connection_slots.remove().await;
-        };
-
-        self.task_group
-            .spawn(ex.clone(), callback(conn), on_disconnect);
-
-        Ok(())
-    }
-}
diff --git a/p2p/src/net/listener.rs b/p2p/src/net/listener.rs
deleted file mode 100644
index d1a7bfb..0000000
--- a/p2p/src/net/listener.rs
+++ /dev/null
@@ -1,142 +0,0 @@
-use std::{future::Future, sync::Arc};
-
-use log::{error, info, trace};
-
-use karyons_core::{
-    async_utils::{TaskGroup, TaskResult},
-    Executor,
-};
-
-use karyons_net::{listen, Conn, Endpoint, Listener as NetListener};
-
-use crate::{
-    monitor::{ConnEvent, Monitor},
-    Result,
-};
-
-use super::slots::ConnectionSlots;
-
-/// Responsible for creating inbound connections with other peers.
-pub struct Listener {
-    /// Managing spawned tasks.
-    task_group: TaskGroup,
-
-    /// Manages available inbound slots.
-    connection_slots: Arc<ConnectionSlots>,
-
-    /// Responsible for network and system monitoring.
-    monitor: Arc<Monitor>,
-}
-
-impl Listener {
-    /// Creates a new Listener
-    pub fn new(connection_slots: Arc<ConnectionSlots>, monitor: Arc<Monitor>) -> Arc<Self> {
-        Arc::new(Self {
-            connection_slots,
-            task_group: TaskGroup::new(),
-            monitor,
-        })
-    }
-
-    /// Starts a listener on the given `endpoint`. For each incoming connection
-    /// that is accepted, it invokes the provided `callback`, and pass the
-    /// connection to the callback.
-    ///
-    /// Returns the resloved listening endpoint.
-    pub async fn start<'a, Fut>(
-        self: &Arc<Self>,
-        ex: Executor<'a>,
-        endpoint: Endpoint,
-        // https://github.com/rust-lang/rfcs/pull/2132
-        callback: impl FnOnce(Conn) -> Fut + Clone + Send + 'a,
-    ) -> Result<Endpoint>
-    where
-        Fut: Future<Output = Result<()>> + Send + 'a,
-    {
-        let listener = match listen(&endpoint).await {
-            Ok(listener) => {
-                self.monitor
-                    .notify(&ConnEvent::Listening(endpoint.clone()).into())
-                    .await;
-                listener
-            }
-            Err(err) => {
-                error!("Failed to listen on {endpoint}: {err}");
-                self.monitor
-                    .notify(&ConnEvent::ListenFailed(endpoint).into())
-                    .await;
-                return Err(err.into());
-            }
-        };
-
-        let resolved_endpoint = listener.local_endpoint()?;
-
-        info!("Start listening on {endpoint}");
-
-        let selfc = self.clone();
-        self.task_group.spawn(
-            ex.clone(),
-            selfc.listen_loop(ex.clone(), listener, callback),
-            |res| async move {
-                if let TaskResult::Completed(Err(err)) = res {
-                    error!("Listen loop stopped: {endpoint} {err}");
-                }
-            },
-        );
-        Ok(resolved_endpoint)
-    }
-
-    /// Shuts down the listener
-    pub async fn shutdown(&self) {
-        self.task_group.cancel().await;
-    }
-
-    async fn listen_loop<'a, Fut>(
-        self: Arc<Self>,
-        ex: Executor<'a>,
-        listener: Box<dyn NetListener>,
-        callback: impl FnOnce(Conn) -> Fut + Clone + Send + 'a,
-    ) -> Result<()>
-    where
-        Fut: Future<Output = Result<()>> + Send + 'a,
-    {
-        loop {
-            // Wait for an available inbound slot.
-            self.connection_slots.wait_for_slot().await;
-            let result = listener.accept().await;
-
-            let conn = match result {
-                Ok(c) => {
-                    self.monitor
-                        .notify(&ConnEvent::Accepted(c.peer_endpoint()?).into())
-                        .await;
-                    c
-                }
-                Err(err) => {
-                    error!("Failed to accept a new connection: {err}");
-                    self.monitor.notify(&ConnEvent::AcceptFailed.into()).await;
-                    return Err(err.into());
-                }
-            };
-
-            self.connection_slots.add();
-
-            let selfc = self.clone();
-            let endpoint = conn.peer_endpoint()?;
-            let on_disconnect = |res| async move {
-                if let TaskResult::Completed(Err(err)) = res {
-                    trace!("Inbound connection dropped: {err}");
-                }
-                selfc
-                    .monitor
-                    .notify(&ConnEvent::Disconnected(endpoint).into())
-                    .await;
-                selfc.connection_slots.remove().await;
-            };
-
-            let callback = callback.clone();
-            self.task_group
-                .spawn(ex.clone(), callback(conn), on_disconnect);
-        }
-    }
-}
diff --git a/p2p/src/net/mod.rs b/p2p/src/net/mod.rs
deleted file mode 100644
index 9cdc748..0000000
--- a/p2p/src/net/mod.rs
+++ /dev/null
@@ -1,27 +0,0 @@
-mod connection_queue;
-mod connector;
-mod listener;
-mod slots;
-
-pub use connection_queue::ConnQueue;
-pub use connector::Connector;
-pub use listener::Listener;
-pub use slots::ConnectionSlots;
-
-use std::fmt;
-
-/// Defines the direction of a network connection.
-#[derive(Clone, Debug)]
-pub enum ConnDirection {
-    Inbound,
-    Outbound,
-}
-
-impl fmt::Display for ConnDirection {
-    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        match self {
-            ConnDirection::Inbound => write!(f, "Inbound"),
-            ConnDirection::Outbound => write!(f, "Outbound"),
-        }
-    }
-}
diff --git a/p2p/src/net/slots.rs b/p2p/src/net/slots.rs
deleted file mode 100644
index 99f0a78..0000000
--- a/p2p/src/net/slots.rs
+++ /dev/null
@@ -1,54 +0,0 @@
-use std::sync::atomic::{AtomicUsize, Ordering};
-
-use karyons_core::async_utils::CondWait;
-
-/// Manages available inbound and outbound slots.
-pub struct ConnectionSlots {
-    /// A condvar for notifying when a slot become available.
-    signal: CondWait,
-    /// The number of occupied slots
-    slots: AtomicUsize,
-    /// The maximum number of slots.
-    max_slots: usize,
-}
-
-impl ConnectionSlots {
-    /// Creates a new ConnectionSlots
-    pub fn new(max_slots: usize) -> Self {
-        Self {
-            signal: CondWait::new(),
-            slots: AtomicUsize::new(0),
-            max_slots,
-        }
-    }
-
-    /// Returns the number of occupied slots
-    pub fn load(&self) -> usize {
-        self.slots.load(Ordering::SeqCst)
-    }
-
-    /// Increases the occupied slots by one.
-    pub fn add(&self) {
-        self.slots.fetch_add(1, Ordering::SeqCst);
-    }
-
-    /// Decreases the occupied slots by one and notifies the waiting signal
-    /// to start accepting/connecting new connections.
-    pub async fn remove(&self) {
-        self.slots.fetch_sub(1, Ordering::SeqCst);
-        if self.slots.load(Ordering::SeqCst) < self.max_slots {
-            self.signal.signal().await;
-        }
-    }
-
-    /// Waits for a slot to become available.
-    pub async fn wait_for_slot(&self) {
-        if self.slots.load(Ordering::SeqCst) < self.max_slots {
-            return;
-        }
-
-        // Wait for a signal
-        self.signal.wait().await;
-        self.signal.reset().await;
-    }
-}