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use std::io::Write;
use std::net::SocketAddr;
use std::sync::Arc;
use std::time::Duration;
use async_trait::async_trait;
use bytes::Bytes;
use futures::{stream, StreamExt};
use log::*;
use serde::{Deserialize, Serialize};
use structopt::StructOpt;
use tokio::sync::watch;
use sodiumoxide::crypto::auth;
use sodiumoxide::crypto::sign::ed25519;
use netapp::endpoint::*;
use netapp::message::*;
use netapp::peering::fullmesh::*;
use netapp::util::*;
use netapp::{NetApp, NodeID};
#[derive(StructOpt, Debug)]
#[structopt(name = "netapp")]
pub struct Opt {
#[structopt(long = "network-key", short = "n")]
network_key: Option<String>,
#[structopt(long = "private-key", short = "p")]
private_key: Option<String>,
#[structopt(long = "bootstrap-peer", short = "b")]
bootstrap_peers: Vec<String>,
#[structopt(long = "listen-addr", short = "l", default_value = "127.0.0.1:1980")]
listen_addr: String,
#[structopt(long = "public-addr", short = "a")]
public_addr: Option<String>,
}
#[tokio::main]
async fn main() {
env_logger::Builder::new()
.parse_env("RUST_LOG")
.format(|buf, record| {
writeln!(
buf,
"{} {} {} {}",
chrono::Local::now().format("%s%.6f"),
record.module_path().unwrap_or("_"),
record.level(),
record.args()
)
})
.init();
let opt = Opt::from_args();
let netid = match &opt.network_key {
Some(k) => auth::Key::from_slice(&hex::decode(k).unwrap()).unwrap(),
None => auth::gen_key(),
};
info!("Network key: {}", hex::encode(&netid));
let privkey = match &opt.private_key {
Some(k) => ed25519::SecretKey::from_slice(&hex::decode(k).unwrap()).unwrap(),
None => {
let (_pk, sk) = ed25519::gen_keypair();
sk
}
};
info!("Node private key: {}", hex::encode(&privkey));
info!("Node public key: {}", hex::encode(&privkey.public_key()));
let public_addr = opt.public_addr.map(|x| x.parse().unwrap());
let listen_addr: SocketAddr = opt.listen_addr.parse().unwrap();
info!("Node public address: {:?}", public_addr);
info!("Node listen address: {}", listen_addr);
let netapp = NetApp::new(0u64, netid.clone(), privkey.clone());
let mut bootstrap_peers = vec![];
for peer in opt.bootstrap_peers.iter() {
bootstrap_peers.push(parse_peer_addr(peer).expect("Invalid peer address"));
}
let peering = FullMeshPeeringStrategy::new(
netapp.clone(),
bootstrap_peers,
public_addr.map(|a| SocketAddr::new(a, listen_addr.port())),
);
info!("Add more peers to this mesh by running: fullmesh -n {} -l 127.0.0.1:$((1000 + $RANDOM)) -b {}@{}",
hex::encode(&netid),
hex::encode(&privkey.public_key()),
listen_addr);
let watch_cancel = netapp::util::watch_ctrl_c();
let example = Arc::new(Example {
netapp: netapp.clone(),
fullmesh: peering.clone(),
example_endpoint: netapp.endpoint("__netapp/examples/fullmesh.rs/Example".into()),
});
example.example_endpoint.set_handler(example.clone());
tokio::join!(
example.exchange_loop(watch_cancel.clone()),
netapp.listen(listen_addr, public_addr, watch_cancel.clone()),
peering.run(watch_cancel),
);
}
// ----
struct Example {
netapp: Arc<NetApp>,
fullmesh: Arc<FullMeshPeeringStrategy>,
example_endpoint: Arc<Endpoint<ExampleMessage, Self>>,
}
impl Example {
async fn exchange_loop(self: Arc<Self>, must_exit: watch::Receiver<bool>) {
let mut i = 12000;
while !*must_exit.borrow() {
tokio::time::sleep(Duration::from_secs(2)).await;
let peers = self.fullmesh.get_peer_list();
for p in peers.iter() {
let id = p.id;
if id == self.netapp.id {
continue;
}
i += 1;
let example_field = i;
let self2 = self.clone();
tokio::spawn(async move {
info!(
"Send example query {} to {}",
example_field,
hex::encode(id)
);
// Fake data stream with some delays in item production
let stream =
Box::pin(stream::iter([100, 200, 300, 400]).then(|x| async move {
tokio::time::sleep(Duration::from_millis(500)).await;
Ok(Bytes::from(vec![(x % 256) as u8; 133 * x]))
}));
match self2
.example_endpoint
.call_streaming(
&id,
Req::new(ExampleMessage { example_field })
.unwrap()
.with_stream(stream),
PRIO_NORMAL,
)
.await
{
Ok(resp) => {
let (resp, stream) = resp.into_parts();
info!(
"Got example response to {} from {}: {:?}",
example_field,
hex::encode(id),
resp
);
let mut stream = stream.unwrap();
while let Some(x) = stream.next().await {
info!("Response: stream got bytes {:?}", x.map(|b| b.len()));
}
}
Err(e) => warn!("Error with example request: {}", e),
}
});
}
}
}
}
#[async_trait]
impl StreamingEndpointHandler<ExampleMessage> for Example {
async fn handle(
self: &Arc<Self>,
mut msg: Req<ExampleMessage>,
_from: NodeID,
) -> Resp<ExampleMessage> {
info!(
"Got example message: {:?}, sending example response",
msg.msg()
);
let source_stream = msg.take_stream().unwrap();
// Return same stream with 300ms delay
let new_stream = Box::pin(source_stream.then(|x| async move {
tokio::time::sleep(Duration::from_millis(300)).await;
x
}));
Resp::new(ExampleResponse {
example_field: false,
})
.with_stream(new_stream)
}
}
#[derive(Serialize, Deserialize, Debug)]
struct ExampleMessage {
example_field: usize,
}
#[derive(Serialize, Deserialize, Debug)]
struct ExampleResponse {
example_field: bool,
}
impl Message for ExampleMessage {
type Response = ExampleResponse;
}
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