mirror of
https://github.com/fluencelabs/rust-libp2p
synced 2025-04-29 20:52:15 +00:00
b5d993267f
Implements memory-based connection limits where the user can specify an absolute or a relative limit of the process' memory usage in relation to the available system memory. Related: #4252. Pull-Request: #4281.
90 lines
3.3 KiB
Rust
90 lines
3.3 KiB
Rust
// Copyright 2023 Protocol Labs.
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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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mod util;
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use libp2p_core::Multiaddr;
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use libp2p_identity::PeerId;
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use libp2p_memory_connection_limits::*;
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use std::time::Duration;
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use util::*;
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use libp2p_swarm::{dial_opts::DialOpts, DialError, Swarm};
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use libp2p_swarm_test::SwarmExt;
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#[test]
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fn max_bytes() {
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const CONNECTION_LIMIT: usize = 20;
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let max_allowed_bytes = CONNECTION_LIMIT * 1024 * 1024;
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let mut network = Swarm::new_ephemeral(|_| TestBehaviour {
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connection_limits: Behaviour::with_max_bytes(max_allowed_bytes),
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mem_consumer: ConsumeMemoryBehaviour1MBPending0Established::default(),
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});
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let addr: Multiaddr = "/memory/1234".parse().unwrap();
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let target = PeerId::random();
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// Exercise `dial` function to get more stable memory stats later
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network
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.dial(
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DialOpts::peer_id(target)
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.addresses(vec![addr.clone()])
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.build(),
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)
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.expect("Unexpected connection limit.");
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// Adds current mem usage to the limit and update
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let max_allowed_bytes_plus_base_usage =
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max_allowed_bytes + memory_stats::memory_stats().unwrap().physical_mem;
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network.behaviour_mut().connection_limits =
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Behaviour::with_max_bytes(max_allowed_bytes_plus_base_usage);
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for _ in 0..CONNECTION_LIMIT {
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network
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.dial(
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DialOpts::peer_id(target)
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.addresses(vec![addr.clone()])
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.build(),
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)
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.expect("Unexpected connection limit.");
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}
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std::thread::sleep(Duration::from_millis(100)); // Memory stats are only updated every 100ms internally, ensure they are up-to-date when we try to exceed it.
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match network
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.dial(DialOpts::peer_id(target).addresses(vec![addr]).build())
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.expect_err("Unexpected dialing success.")
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{
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DialError::Denied { cause } => {
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let exceeded = cause
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.downcast::<MemoryUsageLimitExceeded>()
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.expect("connection denied because of limit");
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assert_eq!(
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exceeded.max_allowed_bytes(),
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max_allowed_bytes_plus_base_usage
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);
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assert!(exceeded.process_physical_memory_bytes() >= exceeded.max_allowed_bytes());
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}
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e => panic!("Unexpected error: {e:?}"),
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}
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}
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