82 lines
2.4 KiB
Rust
82 lines
2.4 KiB
Rust
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// Copyright 2015-2018 Parity Technologies (UK) Ltd.
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// This file is part of Parity.
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// Parity is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// Parity is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with Parity. If not, see <http://www.gnu.org/licenses/>.
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//! Stores recently seen bad blocks.
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use bytes::{Bytes, ToPretty};
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use ethereum_types::H256;
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use itertools::Itertools;
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use memory_cache::MemoryLruCache;
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use parking_lot::RwLock;
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use verification::queue::kind::blocks::Unverified;
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/// Recently seen bad blocks.
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pub struct BadBlocks {
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last_blocks: RwLock<MemoryLruCache<H256, (Unverified, String)>>,
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}
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impl Default for BadBlocks {
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fn default() -> Self {
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BadBlocks {
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last_blocks: RwLock::new(MemoryLruCache::new(8 * 1024 * 1024)),
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}
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}
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}
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impl BadBlocks {
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/// Reports given RLP as invalid block.
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pub fn report(&self, raw: Bytes, message: String) {
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match Unverified::from_rlp(raw) {
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Ok(unverified) => {
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error!(
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target: "client",
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"\nBad block detected: {}\nRLP: {}\nHeader: {:?}\nUncles: {}\nTransactions:{}\n",
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message,
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unverified.bytes.to_hex(),
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unverified.header,
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unverified.uncles
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.iter()
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.enumerate()
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.map(|(index, uncle)| format!("[Uncle {}] {:?}", index, uncle))
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.join("\n"),
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unverified.transactions
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.iter()
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.enumerate()
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.map(|(index, tx)| format!("[Tx {}] {:?}", index, tx))
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.join("\n"),
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);
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self.last_blocks.write().insert(unverified.header.hash(), (unverified, message));
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},
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Err(err) => {
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error!(target: "client", "Bad undecodable block detected: {}\n{:?}", message, err);
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},
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}
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}
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/// Returns a list of recently detected bad blocks with error descriptions.
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pub fn bad_blocks(&self) -> Vec<(Unverified, String)> {
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self.last_blocks.read()
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.backstore()
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.iter()
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.map(|(_k, (unverified, message))| (
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Unverified::from_rlp(unverified.bytes.clone())
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.expect("Bytes coming from UnverifiedBlock so decodable; qed"),
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message.clone(),
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))
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.collect()
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}
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}
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