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#[macro_use]
extern crate tracing;
mod error;
mod io;
mod peer;
mod proto;
mod ptr;
mod routes;
mod server;
pub use error::{Error, Result};
pub(crate) use io::IoPair;
pub(crate) use peer::{DstAddr, Peer, PeerState, SourceAddr};
pub(crate) use proto::{Packet, PacketBuilder};
pub(crate) use ptr::AtomPtr;
pub(crate) use routes::Routes;
pub(crate) use server::{LockedStream, Server};
use async_std::sync::Arc;
use async_trait::async_trait;
use netmod::{self, Endpoint as EndpointExt, Frame, Target};
use serde::{Deserialize, Serialize};
#[derive(Clone, Copy, Debug, PartialEq, Eq, PartialOrd, Ord, Hash)]
pub enum Mode {
Static,
Dynamic,
}
#[derive(Clone, Copy, Debug, PartialEq, Eq, PartialOrd, Ord, Hash, Serialize, Deserialize)]
pub enum LinkType {
Bidirect,
Limited,
}
impl Default for LinkType {
fn default() -> Self {
Self::Bidirect
}
}
#[derive(Clone)]
pub struct Endpoint {
server: Arc<Server>,
routes: Arc<Routes>,
}
impl Endpoint {
#[tracing::instrument(level = "info")]
pub async fn new(addr: &str, port: u16, name: &str, mode: Mode) -> Result<Arc<Self>> {
info!("Initialising Tcp backend");
let routes = Routes::new(port);
let server = Server::new(Arc::clone(&routes), addr, port, mode).await?;
server.run();
Ok(Arc::new(Self { server, routes }))
}
pub fn mode(&self) -> Mode {
self.server.mode()
}
pub async fn stop(&self) {
self.server.stop();
self.routes.stop_all().await;
}
pub async fn add_peers(&self, peers: Vec<String>) -> Result<()> {
for p in peers.into_iter() {
if &p == "" && continue {}
let mut parts: Vec<_> = p.split(|x| x == ' ').collect();
let _type = parts.get(1);
let peer = match parts[0].parse().ok() {
Some(s) => s,
None => {
error!("Failed to parse peer info `{}`", parts[0]);
continue;
}
};
let t = match _type {
Some(&"limited") => LinkType::Limited,
_ => LinkType::Bidirect,
};
trace!(
"Adding peer: {} ({})",
peer,
match t {
LinkType::Limited => "limited",
LinkType::Bidirect => "",
}
);
self.routes.add_via_dst(peer, t).await;
}
Ok(())
}
}
#[async_trait]
impl EndpointExt for Endpoint {
fn size_hint(&self) -> usize {
0
}
async fn send(&self, frame: Frame, target: Target) -> netmod::Result<()> {
match target {
Target::Flood => {
let dsts = self.routes.all_dst().await;
for peer in dsts {
peer.send(Packet::Frame(frame.clone())).await;
}
}
Target::Single(id) => {
let peer = match self.routes.get_peer(id as usize).await {
Some(p) => Ok(p),
None => Err(netmod::Error::ConnectionLost),
}?;
peer.send(Packet::Frame(frame)).await;
}
}
Ok(())
}
async fn next(&self) -> netmod::Result<(Frame, Target)> {
Ok(self.server.next().await)
}
}