105 lines
2.8 KiB
Rust
105 lines
2.8 KiB
Rust
//! The `ncp` module implements the network control plane.
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use crdt::Crdt;
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use packet::{BlobRecycler, SharedBlob};
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use result::Result;
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use service::Service;
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use std::net::UdpSocket;
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use std::sync::atomic::{AtomicBool, Ordering};
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use std::sync::mpsc::channel;
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use std::sync::{Arc, RwLock};
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use std::thread::{self, JoinHandle};
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use streamer;
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pub struct Ncp {
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exit: Arc<AtomicBool>,
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thread_hdls: Vec<JoinHandle<()>>,
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}
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impl Ncp {
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pub fn new(
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crdt: &Arc<RwLock<Crdt>>,
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window: Arc<RwLock<Vec<Option<SharedBlob>>>>,
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gossip_listen_socket: UdpSocket,
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gossip_send_socket: UdpSocket,
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exit: Arc<AtomicBool>,
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) -> Result<Ncp> {
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let blob_recycler = BlobRecycler::default();
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let (request_sender, request_receiver) = channel();
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trace!(
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"Ncp: id: {:?}, listening on: {:?}",
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&crdt.read().unwrap().me[..4],
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gossip_listen_socket.local_addr().unwrap()
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);
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let t_receiver = streamer::blob_receiver(
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exit.clone(),
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blob_recycler.clone(),
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gossip_listen_socket,
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request_sender,
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)?;
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let (response_sender, response_receiver) = channel();
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let t_responder = streamer::responder(
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"ncp",
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gossip_send_socket,
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blob_recycler.clone(),
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response_receiver,
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);
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let t_listen = Crdt::listen(
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crdt.clone(),
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window,
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blob_recycler.clone(),
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request_receiver,
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response_sender.clone(),
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exit.clone(),
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);
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let t_gossip = Crdt::gossip(crdt.clone(), blob_recycler, response_sender, exit.clone());
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let thread_hdls = vec![t_receiver, t_responder, t_listen, t_gossip];
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Ok(Ncp { exit, thread_hdls })
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}
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pub fn close(self) -> thread::Result<()> {
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self.exit.store(true, Ordering::Relaxed);
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self.join()
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}
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}
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impl Service for Ncp {
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fn thread_hdls(self) -> Vec<JoinHandle<()>> {
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self.thread_hdls
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}
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fn join(self) -> thread::Result<()> {
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for thread_hdl in self.thread_hdls() {
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thread_hdl.join()?;
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}
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Ok(())
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}
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}
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#[cfg(test)]
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mod tests {
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use crdt::{Crdt, TestNode};
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use ncp::Ncp;
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use std::sync::atomic::AtomicBool;
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use std::sync::{Arc, RwLock};
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#[test]
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#[ignore]
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// test that stage will exit when flag is set
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fn test_exit() {
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let exit = Arc::new(AtomicBool::new(false));
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let tn = TestNode::new();
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let crdt = Crdt::new(tn.data.clone());
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let c = Arc::new(RwLock::new(crdt));
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let w = Arc::new(RwLock::new(vec![]));
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let d = Ncp::new(
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&c.clone(),
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w,
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tn.sockets.gossip,
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tn.sockets.gossip_send,
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exit.clone(),
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).unwrap();
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d.close().expect("thread join");
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}
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}
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