lighthouse/beacon_node/lighthouse_network/tests/common/behaviour.rs

396 lines
14 KiB
Rust
Raw Normal View History

// NOTE: Taken from libp2p's swarm's testing utils.
//
// Copyright 2020 Parity Technologies (UK) Ltd.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
use std::collections::HashMap;
use std::task::{Context, Poll};
use libp2p::core::connection::{ConnectedPoint, ConnectionId};
use libp2p::core::transport::ListenerId;
use libp2p::swarm::handler::{ConnectionHandler, DummyConnectionHandler, IntoConnectionHandler};
use libp2p::swarm::{DialError, NetworkBehaviour, NetworkBehaviourAction, PollParameters};
use libp2p::{Multiaddr, PeerId};
/// A `MockBehaviour` is a `NetworkBehaviour` that allows for
/// the instrumentation of return values, without keeping
/// any further state.
pub struct MockBehaviour<
THandler = DummyConnectionHandler,
TOutEvent = <DummyConnectionHandler as ConnectionHandler>::OutEvent,
> where
THandler: ConnectionHandler,
{
/// The prototype protocols handler that is cloned for every
/// invocation of `new_handler`.
pub handler_proto: THandler,
/// The addresses to return from `addresses_of_peer`.
pub addresses: HashMap<PeerId, Vec<Multiaddr>>,
/// The next action to return from `poll`.
///
/// An action is only returned once.
pub next_action: Option<NetworkBehaviourAction<TOutEvent, THandler>>,
}
impl<THandler, TOutEvent> MockBehaviour<THandler, TOutEvent>
where
THandler: ConnectionHandler,
{
pub fn new(handler_proto: THandler) -> Self {
MockBehaviour {
handler_proto,
addresses: HashMap::new(),
next_action: None,
}
}
}
impl<THandler, TOutEvent> NetworkBehaviour for MockBehaviour<THandler, TOutEvent>
where
THandler: ConnectionHandler + Clone,
THandler::OutEvent: Clone,
TOutEvent: Send + 'static,
{
type ConnectionHandler = THandler;
type OutEvent = TOutEvent;
fn new_handler(&mut self) -> Self::ConnectionHandler {
self.handler_proto.clone()
}
fn addresses_of_peer(&mut self, p: &PeerId) -> Vec<Multiaddr> {
self.addresses.get(p).map_or(Vec::new(), |v| v.clone())
}
fn inject_event(&mut self, _: PeerId, _: ConnectionId, _: THandler::OutEvent) {}
fn poll(
&mut self,
_: &mut Context,
_: &mut impl PollParameters,
) -> Poll<NetworkBehaviourAction<Self::OutEvent, Self::ConnectionHandler>> {
Option::take(&mut self.next_action).map_or(Poll::Pending, Poll::Ready)
}
}
/// A `CallTraceBehaviour` is a `NetworkBehaviour` that tracks invocations of callback methods and
/// their arguments, wrapping around an inner behaviour. It ensures certain invariants are met.
pub struct CallTraceBehaviour<TInner>
where
TInner: NetworkBehaviour,
{
inner: TInner,
pub addresses_of_peer: Vec<PeerId>,
pub inject_connection_established: Vec<(PeerId, ConnectionId, ConnectedPoint, usize)>,
pub inject_connection_closed: Vec<(PeerId, ConnectionId, ConnectedPoint, usize)>,
pub inject_event: Vec<(
PeerId,
ConnectionId,
<<TInner::ConnectionHandler as IntoConnectionHandler>::Handler as ConnectionHandler>::OutEvent,
)>,
pub inject_dial_failure: Vec<Option<PeerId>>,
pub inject_new_listener: Vec<ListenerId>,
pub inject_new_listen_addr: Vec<(ListenerId, Multiaddr)>,
pub inject_new_external_addr: Vec<Multiaddr>,
pub inject_expired_listen_addr: Vec<(ListenerId, Multiaddr)>,
pub inject_expired_external_addr: Vec<Multiaddr>,
pub inject_listener_error: Vec<ListenerId>,
pub inject_listener_closed: Vec<(ListenerId, bool)>,
pub poll: usize,
}
impl<TInner> CallTraceBehaviour<TInner>
where
TInner: NetworkBehaviour,
{
pub fn new(inner: TInner) -> Self {
Self {
inner,
addresses_of_peer: Vec::new(),
inject_connection_established: Vec::new(),
inject_connection_closed: Vec::new(),
inject_event: Vec::new(),
inject_dial_failure: Vec::new(),
inject_new_listener: Vec::new(),
inject_new_listen_addr: Vec::new(),
inject_new_external_addr: Vec::new(),
inject_expired_listen_addr: Vec::new(),
inject_expired_external_addr: Vec::new(),
inject_listener_error: Vec::new(),
inject_listener_closed: Vec::new(),
poll: 0,
}
}
#[allow(dead_code)]
pub fn reset(&mut self) {
self.addresses_of_peer = Vec::new();
self.inject_connection_established = Vec::new();
self.inject_connection_closed = Vec::new();
self.inject_event = Vec::new();
self.inject_dial_failure = Vec::new();
self.inject_new_listen_addr = Vec::new();
self.inject_new_external_addr = Vec::new();
self.inject_expired_listen_addr = Vec::new();
self.inject_listener_error = Vec::new();
self.inject_listener_closed = Vec::new();
self.poll = 0;
}
pub fn inner(&mut self) -> &mut TInner {
&mut self.inner
}
/// Checks that when the expected number of closed connection notifications are received, a
/// given number of expected disconnections have been received as well.
///
/// Returns if the first condition is met.
pub fn assert_disconnected(
&self,
expected_closed_connections: usize,
expected_disconnections: usize,
) -> bool {
if self.inject_connection_closed.len() == expected_closed_connections {
assert_eq!(
self.inject_connection_closed
.iter()
.filter(|(.., remaining_established)| { *remaining_established == 0 })
.count(),
expected_disconnections
);
return true;
}
false
}
/// Checks that when the expected number of established connection notifications are received,
/// a given number of expected connections have been received as well.
///
/// Returns if the first condition is met.
pub fn assert_connected(
&self,
expected_established_connections: usize,
expected_connections: usize,
) -> bool {
if self.inject_connection_established.len() == expected_established_connections {
assert_eq!(
self.inject_connection_established
.iter()
.filter(|(.., reported_aditional_connections)| {
*reported_aditional_connections == 0
})
.count(),
expected_connections
);
return true;
}
false
}
}
impl<TInner> NetworkBehaviour for CallTraceBehaviour<TInner>
where
TInner: NetworkBehaviour,
<<TInner::ConnectionHandler as IntoConnectionHandler>::Handler as ConnectionHandler>::OutEvent:
Clone,
{
type ConnectionHandler = TInner::ConnectionHandler;
type OutEvent = TInner::OutEvent;
fn new_handler(&mut self) -> Self::ConnectionHandler {
self.inner.new_handler()
}
fn addresses_of_peer(&mut self, p: &PeerId) -> Vec<Multiaddr> {
self.addresses_of_peer.push(*p);
self.inner.addresses_of_peer(p)
}
fn inject_connection_established(
&mut self,
p: &PeerId,
c: &ConnectionId,
e: &ConnectedPoint,
errors: Option<&Vec<Multiaddr>>,
other_established: usize,
) {
let mut other_peer_connections = self
.inject_connection_established
.iter()
.rev() // take last to first
.filter_map(|(peer, .., other_established)| {
if p == peer {
Some(other_established)
} else {
None
}
})
.take(other_established);
// We are informed that there are `other_established` additional connections. Ensure that the
// number of previous connections is consistent with this
if let Some(&prev) = other_peer_connections.next() {
if prev < other_established {
assert_eq!(
prev,
other_established - 1,
"Inconsistent connection reporting"
)
}
assert_eq!(other_peer_connections.count(), other_established - 1);
} else {
assert_eq!(other_established, 0)
}
self.inject_connection_established
.push((*p, *c, e.clone(), other_established));
self.inner
.inject_connection_established(p, c, e, errors, other_established);
}
fn inject_connection_closed(
&mut self,
p: &PeerId,
c: &ConnectionId,
e: &ConnectedPoint,
handler: <Self::ConnectionHandler as IntoConnectionHandler>::Handler,
remaining_established: usize,
) {
let mut other_closed_connections = self
.inject_connection_established
.iter()
.rev() // take last to first
.filter_map(|(peer, .., remaining_established)| {
if p == peer {
Some(remaining_established)
} else {
None
}
})
.take(remaining_established);
// We are informed that there are `other_established` additional connections. Ensure that the
// number of previous connections is consistent with this
if let Some(&prev) = other_closed_connections.next() {
if prev < remaining_established {
assert_eq!(
prev,
remaining_established - 1,
"Inconsistent closed connection reporting"
)
}
assert_eq!(other_closed_connections.count(), remaining_established - 1);
} else {
assert_eq!(remaining_established, 0)
}
assert!(
self.inject_connection_established
.iter()
.any(|(peer, conn_id, endpoint, _)| (peer, conn_id, endpoint) == (p, c, e)),
"`inject_connection_closed` is called only for connections for \
which `inject_connection_established` was called first."
);
self.inject_connection_closed
.push((*p, *c, e.clone(), remaining_established));
self.inner
.inject_connection_closed(p, c, e, handler, remaining_established);
}
fn inject_event(
&mut self,
p: PeerId,
c: ConnectionId,
e: <<Self::ConnectionHandler as IntoConnectionHandler>::Handler as ConnectionHandler>::OutEvent,
) {
assert!(
self.inject_connection_established
.iter()
.any(|(peer_id, conn_id, ..)| *peer_id == p && c == *conn_id),
"`inject_event` is called for reported connections."
);
assert!(
!self
.inject_connection_closed
.iter()
.any(|(peer_id, conn_id, ..)| *peer_id == p && c == *conn_id),
"`inject_event` is never called for closed connections."
);
self.inject_event.push((p, c, e.clone()));
self.inner.inject_event(p, c, e);
}
fn inject_dial_failure(
&mut self,
p: Option<PeerId>,
handler: Self::ConnectionHandler,
error: &DialError,
) {
self.inject_dial_failure.push(p);
self.inner.inject_dial_failure(p, handler, error);
}
fn inject_new_listener(&mut self, id: ListenerId) {
self.inject_new_listener.push(id);
self.inner.inject_new_listener(id);
}
fn inject_new_listen_addr(&mut self, id: ListenerId, a: &Multiaddr) {
self.inject_new_listen_addr.push((id, a.clone()));
self.inner.inject_new_listen_addr(id, a);
}
fn inject_expired_listen_addr(&mut self, id: ListenerId, a: &Multiaddr) {
self.inject_expired_listen_addr.push((id, a.clone()));
self.inner.inject_expired_listen_addr(id, a);
}
fn inject_new_external_addr(&mut self, a: &Multiaddr) {
self.inject_new_external_addr.push(a.clone());
self.inner.inject_new_external_addr(a);
}
fn inject_expired_external_addr(&mut self, a: &Multiaddr) {
self.inject_expired_external_addr.push(a.clone());
self.inner.inject_expired_external_addr(a);
}
fn inject_listener_error(&mut self, l: ListenerId, e: &(dyn std::error::Error + 'static)) {
self.inject_listener_error.push(l);
self.inner.inject_listener_error(l, e);
}
fn inject_listener_closed(&mut self, l: ListenerId, r: Result<(), &std::io::Error>) {
self.inject_listener_closed.push((l, r.is_ok()));
self.inner.inject_listener_closed(l, r);
}
fn poll(
&mut self,
cx: &mut Context,
args: &mut impl PollParameters,
) -> Poll<NetworkBehaviourAction<Self::OutEvent, Self::ConnectionHandler>> {
self.poll += 1;
self.inner.poll(cx, args)
}
}