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Limit the set of known extrinsics and blocks. (#1842)

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* Limit the set of known extrinsics and blocks.

* Update Cargo.lock

* Always insert and pop oldest entry if needed.

Always inserting first ensures that the element's LRU position is
updated.
This commit is contained in:
Toralf Wittner
2019-02-21 19:24:23 +01:00
committed by Gav Wood
parent 22aa8482ae
commit 4bf4b37185
5 changed files with 97 additions and 9 deletions
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substrate/core/network/src/protocol.rs
+9 -9
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@@ -29,15 +29,13 @@ use crate::sync::{ChainSync, Status as SyncStatus, SyncState};
use crate::service::{NetworkChan, NetworkMsg, TransactionPool, ExHashT};
use crate::config::{ProtocolConfig, Roles};
use rustc_hex::ToHex;
use std::collections::{BTreeMap, HashMap, HashSet};
use std::collections::{BTreeMap, HashMap};
use std::sync::Arc;
use std::thread;
use std::time;
use std::cmp;
use std::{cmp, num::NonZeroUsize, thread, time};
use log::{trace, debug, warn};
use crate::chain::Client;
use client::light::fetcher::ChangesProof;
use crate::error;
use crate::{error, util::LruHashSet};
const REQUEST_TIMEOUT_SEC: u64 = 40;
const TICK_TIMEOUT: time::Duration = time::Duration::from_millis(1000);
@@ -90,9 +88,9 @@ struct Peer<B: BlockT, H: ExHashT> {
/// Requests we are no longer insterested in.
obsolete_requests: HashMap<message::RequestId, time::Instant>,
/// Holds a set of transactions known to this peer.
known_extrinsics: HashSet<H>,
known_extrinsics: LruHashSet<H>,
/// Holds a set of blocks known to this peer.
known_blocks: HashSet<B::Hash>,
known_blocks: LruHashSet<B::Hash>,
/// Request counter,
next_request_id: message::RequestId,
}
@@ -685,6 +683,8 @@ impl<B: BlockT, S: NetworkSpecialization<B>, H: ExHashT> Protocol<B, S, H> {
}
}
let cache_limit = NonZeroUsize::new(1_000_000).expect("1_000_000 > 0; qed");
let peer = Peer {
info: PeerInfo {
protocol_version: status.version,
@@ -693,8 +693,8 @@ impl<B: BlockT, S: NetworkSpecialization<B>, H: ExHashT> Protocol<B, S, H> {
best_number: status.best_number
},
block_request: None,
known_extrinsics: HashSet::new(),
known_blocks: HashSet::new(),
known_extrinsics: LruHashSet::new(cache_limit),
known_blocks: LruHashSet::new(cache_limit),
next_request_id: 0,
obsolete_requests: HashMap::new(),
};