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pubsub.rs
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pubsub.rs
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use futures::future::pending;
use futures::stream::StreamExt;
use ipfs::Node;
use std::time::Duration;
use tokio::time::timeout;
mod common;
use common::{spawn_nodes, Topology};
#[tokio::test]
async fn subscribe_only_once() {
let a = Node::new("test_node").await;
let _stream = a.pubsub_subscribe("some_topic".into()).await.unwrap();
a.pubsub_subscribe("some_topic".into()).await.unwrap_err();
}
#[tokio::test]
async fn resubscribe_after_unsubscribe() {
let a = Node::new("test_node").await;
let mut stream = a.pubsub_subscribe("topic".into()).await.unwrap();
a.pubsub_unsubscribe("topic").await.unwrap();
// sender has been dropped
assert_eq!(stream.next().await, None);
drop(a.pubsub_subscribe("topic".into()).await.unwrap());
}
#[tokio::test]
async fn unsubscribe_via_drop() {
let a = Node::new("test_node").await;
let msgs = a.pubsub_subscribe("topic".into()).await.unwrap();
assert_eq!(a.pubsub_subscribed().await.unwrap(), &["topic"]);
drop(msgs);
let empty: &[&str] = &[];
assert_eq!(a.pubsub_subscribed().await.unwrap(), empty);
}
#[tokio::test]
async fn can_publish_without_subscribing() {
let a = Node::new("test_node").await;
a.pubsub_publish("topic".into(), b"foobar".to_vec())
.await
.unwrap()
}
#[tokio::test]
async fn publish_between_two_nodes_single_topic() {
use futures::stream::StreamExt;
let nodes = spawn_nodes(2, Topology::Line).await;
let topic = "shared".to_owned();
let mut a_msgs = nodes[0].pubsub_subscribe(topic.clone()).await.unwrap();
let mut b_msgs = nodes[1].pubsub_subscribe(topic.clone()).await.unwrap();
// need to wait to see both sides so that the messages will get through
let mut appeared = false;
for _ in 0..100usize {
if nodes[0]
.pubsub_peers(Some(topic.clone()))
.await
.unwrap()
.contains(&nodes[1].id)
&& nodes[1]
.pubsub_peers(Some(topic.clone()))
.await
.unwrap()
.contains(&nodes[0].id)
{
appeared = true;
break;
}
timeout(Duration::from_millis(100), pending::<()>())
.await
.unwrap_err();
}
assert!(
appeared,
"timed out before both nodes appeared as pubsub peers"
);
nodes[0]
.pubsub_publish(topic.clone(), b"foobar".to_vec())
.await
.unwrap();
nodes[1]
.pubsub_publish(topic.clone(), b"barfoo".to_vec())
.await
.unwrap();
// the order is not defined, but both should see the other's message and the message they sent
let expected = [
// first node should witness it's the message it sent
(&[topic.clone()], nodes[0].id, b"foobar", nodes[0].id),
// second node should witness first nodes message, and so on.
(&[topic.clone()], nodes[0].id, b"foobar", nodes[1].id),
(&[topic.clone()], nodes[1].id, b"barfoo", nodes[0].id),
(&[topic.clone()], nodes[1].id, b"barfoo", nodes[1].id),
]
.iter()
.cloned()
.map(|(topics, sender, data, witness)| (topics.to_vec(), sender, data.to_vec(), witness))
.collect::<Vec<_>>();
let mut actual = Vec::new();
for (st, own_peer_id) in &mut [
(b_msgs.by_ref(), nodes[1].id),
(a_msgs.by_ref(), nodes[0].id),
] {
let received = timeout(
Duration::from_secs(2),
st.take(2)
// Arc::try_unwrap will fail sometimes here as the sender side in src/p2p/pubsub.rs:305
// can still be looping
.map(|msg| (*msg).clone())
.map(|msg| (msg.topics, msg.source, msg.data, *own_peer_id))
.collect::<Vec<_>>(),
)
.await
.unwrap();
actual.extend(received);
}
// sort the received messages both in expected and actual to make sure they are comparable;
// order of receiving is not part of the tuple and shouldn't matter.
let mut expected = expected;
expected.sort_unstable();
actual.sort_unstable();
assert_eq!(
actual, expected,
"sent and received messages must be present on both nodes' streams"
);
drop(b_msgs);
let mut disappeared = false;
for _ in 0..100usize {
if !nodes[0]
.pubsub_peers(Some(topic.clone()))
.await
.unwrap()
.contains(&nodes[1].id)
{
disappeared = true;
break;
}
timeout(Duration::from_millis(100), pending::<()>())
.await
.unwrap_err();
}
assert!(disappeared, "timed out before a saw b's unsubscription");
}
#[tokio::test]
async fn publish_between_two_nodes_different_topics() {
use futures::stream::StreamExt;
let nodes = spawn_nodes(2, Topology::Line).await;
let node_a = &nodes[0];
let node_b = &nodes[1];
let topic_a = "shared-a".to_owned();
let topic_b = "shared-b".to_owned();
// Node A subscribes to Topic B
// Node B subscribes to Topic A
let mut a_msgs = node_a.pubsub_subscribe(topic_b.clone()).await.unwrap();
let mut b_msgs = node_b.pubsub_subscribe(topic_a.clone()).await.unwrap();
// need to wait to see both sides so that the messages will get through
let mut appeared = false;
for _ in 0..100usize {
if node_a
.pubsub_peers(Some(topic_a.clone()))
.await
.unwrap()
.contains(&node_b.id)
&& node_b
.pubsub_peers(Some(topic_b.clone()))
.await
.unwrap()
.contains(&node_a.id)
{
appeared = true;
break;
}
timeout(Duration::from_millis(100), pending::<()>())
.await
.unwrap_err();
}
assert!(
appeared,
"timed out before both nodes appeared as pubsub peers"
);
// Each node publishes to their own topic
node_a
.pubsub_publish(topic_a.clone(), b"foobar".to_vec())
.await
.unwrap();
node_b
.pubsub_publish(topic_b.clone(), b"barfoo".to_vec())
.await
.unwrap();
// the order between messages is not defined, but both should see the other's message. since we
// receive messages first from node_b's stream we expect this order.
//
// in this test case the nodes are not expected to see their own message because nodes are not
// subscribing to the streams they are sending to.
let expected = [
(&[topic_a.clone()], node_a.id, b"foobar", node_b.id),
(&[topic_b.clone()], node_b.id, b"barfoo", node_a.id),
]
.iter()
.cloned()
.map(|(topics, sender, data, witness)| (topics.to_vec(), sender, data.to_vec(), witness))
.collect::<Vec<_>>();
let mut actual = Vec::new();
for (st, own_peer_id) in &mut [(b_msgs.by_ref(), node_b.id), (a_msgs.by_ref(), node_a.id)] {
let received = timeout(
Duration::from_secs(2),
st.take(1)
.map(|msg| (*msg).clone())
.map(|msg| (msg.topics, msg.source, msg.data, *own_peer_id))
.next(),
)
.await
.unwrap()
.unwrap();
actual.push(received);
}
// ordering is defined for expected and actual by the order of the looping above and the
// initial expected creation.
assert_eq!(expected, actual);
drop(b_msgs);
let mut disappeared = false;
for _ in 0..100usize {
if !node_a
.pubsub_peers(Some(topic_a.clone()))
.await
.unwrap()
.contains(&node_b.id)
{
disappeared = true;
break;
}
timeout(Duration::from_millis(100), pending::<()>())
.await
.unwrap_err();
}
assert!(disappeared, "timed out before a saw b's unsubscription");
}
#[cfg(any(feature = "test_go_interop", feature = "test_js_interop"))]
#[tokio::test]
#[ignore = "doesn't work yet"]
async fn pubsub_interop() {
use common::interop::{api_call, ForeignNode};
use futures::{future, pin_mut};
let rust_node = Node::new("rusty_boi").await;
let foreign_node = ForeignNode::new();
let foreign_api_port = foreign_node.api_port;
rust_node
.connect(foreign_node.addrs[0].clone())
.await
.unwrap();
const TOPIC: &str = "shared";
let _rust_sub_stream = rust_node.pubsub_subscribe(TOPIC.to_string()).await.unwrap();
let foreign_sub_answer = future::maybe_done(api_call(
foreign_api_port,
format!("pubsub/sub?arg={}", TOPIC),
));
pin_mut!(foreign_sub_answer);
assert_eq!(foreign_sub_answer.as_mut().output_mut(), None);
// need to wait to see both sides so that the messages will get through
let mut appeared = false;
for _ in 0..100usize {
if rust_node
.pubsub_peers(Some(TOPIC.to_string()))
.await
.unwrap()
.contains(&foreign_node.id)
&& api_call(foreign_api_port, &format!("pubsub/peers?arg={}", TOPIC))
.await
.contains(&rust_node.id.to_string())
{
appeared = true;
break;
}
timeout(Duration::from_millis(200), pending::<()>())
.await
.unwrap_err();
}
assert!(
appeared,
"timed out before both nodes appeared as pubsub peers"
);
}