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use std::io::ErrorKind::{WouldBlock, Interrupted}; use std::os::unix::io::AsRawFd; use std::thread; use std::time::Duration; use std::net::SocketAddr; use std::sync::{ Arc, atomic::{AtomicBool, Ordering} }; use queen_io::{ epoll::{Epoll, Events, Token, Ready, EpollOpt}, queue::mpsc::Queue, tcp::TcpListener }; use rand::{SeedableRng, seq::SliceRandom, rngs::SmallRng}; use nson::msg; use crate::Queen; use crate::net::{NetWork, Packet, AccessFn}; use crate::net::tcp_ext::TcpExt; use crate::dict::*; use crate::error::Result; pub struct Node { queen: Queen, epoll: Epoll, events: Events, queues: Vec<Queue<Packet>>, listens: Vec<TcpListener>, rand: SmallRng, access_fn: Option<AccessFn>, pub tcp_keep_alive: bool, pub tcp_keep_idle: u32, pub tcp_keep_intvl: u32, pub tcp_keep_cnt: u32, pub run: Arc<AtomicBool> } impl Node { pub fn new( queen: Queen, works: usize, addrs: Vec<SocketAddr> ) -> Result<Node> { let run = Arc::new(AtomicBool::new(true)); let mut listens = Vec::new(); for addr in addrs { listens.push(TcpListener::bind(addr)?); } let mut queues = Vec::new(); for _ in 0..works { let queue: Queue<Packet> = Queue::new()?; queues.push(queue.clone()); let mut net_work = NetWork::new(queue, run.clone())?; thread::Builder::new().name("node_net".to_string()).spawn(move || { let ret = net_work.run(); if ret.is_err() { log::error!("net thread exit: {:?}", ret); } else { log::debug!("net thread exit"); } net_work.run.store(false, Ordering::Relaxed); }).unwrap(); } Ok(Node { queen, epoll: Epoll::new()?, events: Events::with_capacity(16), queues, listens, rand: SmallRng::from_entropy(), access_fn: None, tcp_keep_alive: true, tcp_keep_idle: 30, tcp_keep_intvl: 5, tcp_keep_cnt: 3, run }) } pub fn set_access_fn<F>(&mut self, f: F) where F: Fn(String) -> Option<String> + Send + Sync + 'static { self.access_fn = Some(Arc::new(Box::new(f))) } pub fn stop(&self) { self.run.store(false, Ordering::Relaxed); } pub fn is_run(&self) -> bool { self.run.load(Ordering::Relaxed) } pub fn run(&mut self) -> Result<()> { for (id, listen) in self.listens.iter().enumerate() { self.epoll.add(&listen.as_raw_fd(), Token(id), Ready::readable(), EpollOpt::edge())?; } while self.run.load(Ordering::Relaxed) && self.queen.is_run() { let size = match self.epoll.wait(&mut self.events, Some(Duration::from_secs(10))) { Ok(size) => size, Err(err) => { if err.kind() == Interrupted { continue; } else { return Err(err.into()) } } }; for i in 0..size { let event = self.events.get(i).unwrap(); let token = event.token(); if let Some(listen) = self.listens.get(token.0) { loop { let (socket, addr) = match listen.accept() { Ok(socket) => socket, Err(err) => { if err.kind() == WouldBlock { break; } else { return Err(err.into()) } } }; let attr = msg!{ ADDR: addr.to_string(), SECURE: self.access_fn.is_some() }; socket.set_keep_alive(self.tcp_keep_alive)?; socket.set_keep_idle(self.tcp_keep_idle as i32)?; socket.set_keep_intvl(self.tcp_keep_intvl as i32)?; socket.set_keep_cnt(self.tcp_keep_cnt as i32)?; match self.queen.connect(attr, None, None) { Ok(stream) => { if let Some(queue) = self.queues.choose(&mut self.rand) { queue.push(Packet::NewServ { stream, net_stream: socket, access_fn: self.access_fn.clone() }) } }, Err(err) => { log::error!("queen.connect: {:?}", err); } } } } } } Ok(()) } } impl Drop for Node { fn drop(&mut self) { self.run.store(false, Ordering::Relaxed); } }