rqbit/crates/librqbit/src/tests/e2e.rs
2024-08-15 10:40:48 +01:00

276 lines
9.3 KiB
Rust

use std::{
net::{Ipv4Addr, SocketAddr},
time::Duration,
};
use anyhow::bail;
use futures::{stream::FuturesUnordered, StreamExt};
use librqbit_core::magnet::Magnet;
use rand::Rng;
use tokio::{
spawn,
time::{interval, timeout},
};
use tracing::{error_span, info, Instrument};
use crate::{
create_torrent,
tests::test_util::{create_default_random_dir_with_torrents, TestPeerMetadata},
AddTorrentOptions, AddTorrentResponse, Session, SessionOptions,
};
#[tokio::test(flavor = "multi_thread", worker_threads = 64)]
async fn test_e2e_download() {
let _ = tracing_subscriber::fmt::try_init();
// 1. Create a torrent
// Ideally (for a more complicated test) with N files, and at least N pieces that span 2 files.
let piece_length: u32 = 16384 * 2; // TODO: figure out if this should be multiple of chunk size or not
let file_length: usize = 1000 * 1000;
let num_files: usize = 64;
let tempdir =
create_default_random_dir_with_torrents(num_files, file_length, Some("rqbit_e2e"));
let torrent_file = create_torrent(
dbg!(tempdir.path()),
crate::CreateTorrentOptions {
piece_length: Some(piece_length),
..Default::default()
},
)
.await
.unwrap();
let num_servers = 128;
let torrent_file_bytes = torrent_file.as_bytes().unwrap();
let mut futs = FuturesUnordered::new();
// 2. Start N servers that are serving that torrent, and return their IP:port combos.
// Disable DHT on each.
for i in 0u8..num_servers {
let torrent_file_bytes = torrent_file_bytes.clone();
let (tx, rx) = tokio::sync::oneshot::channel();
let tempdir = tempdir.path().to_owned();
spawn(
async move {
let peer_id = TestPeerMetadata {
server_id: i,
max_random_sleep_ms: rand::thread_rng().gen_range(0u8..16),
}
.as_peer_id();
let session = crate::Session::new_with_opts(
std::env::temp_dir().join("does_not_exist"),
SessionOptions {
disable_dht: true,
disable_dht_persistence: true,
dht_config: None,
persistence: None,
peer_id: Some(peer_id),
peer_opts: None,
listen_port_range: Some(15100..17000),
enable_upnp_port_forwarding: false,
default_storage_factory: None,
defer_writes_up_to: None,
..Default::default()
},
)
.await
.unwrap();
info!("started session");
let handle = session
.add_torrent(
crate::AddTorrent::TorrentFileBytes(torrent_file_bytes),
Some(AddTorrentOptions {
overwrite: true,
output_folder: Some(tempdir.to_str().unwrap().to_owned()),
..Default::default()
}),
)
.await
.unwrap();
let h = handle.into_handle().unwrap();
let mut interval = interval(Duration::from_millis(100));
info!("added torrent");
loop {
interval.tick().await;
let is_live = h
.with_state(|s| match s {
crate::ManagedTorrentState::Initializing(_) => Ok(false),
crate::ManagedTorrentState::Live(l) => {
if !l.is_finished() {
bail!("torrent went live, but expected it to be finished");
}
Ok(true)
}
crate::ManagedTorrentState::Error(e) => bail!("error: {e:?}"),
_ => bail!("broken state"),
})
.unwrap();
if is_live {
break;
}
}
info!("torrent is live");
tx.send(SocketAddr::new(
std::net::IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1)),
session.tcp_listen_port().unwrap(),
))
}
.instrument(error_span!("server", server = i)),
);
futs.push(timeout(Duration::from_secs(30), rx));
}
let mut peers = Vec::new();
while let Some(addr) = futs.next().await {
peers.push(addr.unwrap().unwrap());
}
info!("started all servers, starting client");
let client_iters = std::env::var("E2E_CLIENT_ITERS")
.ok()
.and_then(|v| v.parse().ok())
.unwrap_or(1usize);
let magnet = Magnet::from_id20(torrent_file.info_hash(), Vec::new()).to_string();
// 3. Start a client with the initial peers, and download the file.
for _ in 0..client_iters {
let outdir = tempfile::TempDir::with_prefix("rqbit_e2e_client").unwrap();
let session = Session::new_with_opts(
outdir.path().to_owned(),
SessionOptions {
disable_dht: true,
disable_dht_persistence: true,
dht_config: None,
persistence: None,
listen_port_range: None,
enable_upnp_port_forwarding: false,
..Default::default()
},
)
.await
.unwrap();
info!("started client session");
let (id, handle) = {
let r = session
.add_torrent(
crate::AddTorrent::Url((&magnet).into()),
Some(AddTorrentOptions {
initial_peers: Some(peers.clone()),
// only_files: Some(vec![0]),
overwrite: false,
..Default::default()
}),
)
.await
.unwrap();
match r {
AddTorrentResponse::AlreadyManaged(_, _) => todo!(),
AddTorrentResponse::ListOnly(_) => todo!(),
AddTorrentResponse::Added(id, h) => (id, h),
}
};
info!("added handle");
{
let stats_printer = {
let handle = handle.clone();
async move {
let mut interval = interval(Duration::from_millis(100));
loop {
interval.tick().await;
let stats = handle.stats();
let live = match &stats.live {
Some(live) => live,
None => continue,
};
let pstats = &live.snapshot.peer_stats;
info!(
progress_percent =
format!("{}", stats.progress_percent_human_readable()),
peers = format!("{:?}", pstats),
);
}
}
}
.instrument(error_span!("stats_printer"));
let timeout = timeout(Duration::from_secs(180), handle.wait_until_completed());
tokio::pin!(stats_printer);
tokio::pin!(timeout);
let mut stats_finished = false;
loop {
tokio::select! {
r = &mut timeout => {
r.unwrap().unwrap();
break;
}
_ = &mut stats_printer, if !stats_finished => {
stats_finished = true;
}
}
}
}
info!("handle is completed");
session.delete(id, false).await.unwrap();
info!("deleted handle");
// 4. After downloading, recheck its integrity.
let handle = session
.add_torrent(
crate::AddTorrent::TorrentFileBytes(torrent_file_bytes.clone()),
Some(AddTorrentOptions {
paused: true,
overwrite: true,
..Default::default()
}),
)
.await
.unwrap()
.into_handle()
.unwrap();
info!("re-added handle");
timeout(Duration::from_secs(30), async {
let mut interval = interval(Duration::from_millis(100));
loop {
interval.tick().await;
let b = handle
.with_state(|s| match s {
crate::ManagedTorrentState::Initializing(_) => Ok(false),
crate::ManagedTorrentState::Paused(p) => {
assert_eq!(p.chunk_tracker.get_hns().needed_bytes, 0);
Ok(true)
}
_ => bail!("bugged state"),
})
.unwrap();
if b {
break;
}
}
})
.await
.unwrap();
info!("all good");
}
}