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