2240 lines
79 KiB
Rust
2240 lines
79 KiB
Rust
// Copyright 2015-2017 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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//! Blockchain database.
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use bloomchain as bc;
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use util::*;
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use rlp::*;
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use header::*;
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use super::extras::*;
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use transaction::*;
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use views::*;
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use log_entry::{LogEntry, LocalizedLogEntry};
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use receipt::Receipt;
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use blooms::{Bloom, BloomGroup};
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use blockchain::block_info::{BlockInfo, BlockLocation, BranchBecomingCanonChainData};
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use blockchain::best_block::{BestBlock, BestAncientBlock};
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use types::blockchain_info::BlockChainInfo;
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use types::tree_route::TreeRoute;
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use blockchain::update::ExtrasUpdate;
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use blockchain::{CacheSize, ImportRoute, Config};
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use db::{self, Writable, Readable, CacheUpdatePolicy};
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use cache_manager::CacheManager;
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use encoded;
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const LOG_BLOOMS_LEVELS: usize = 3;
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const LOG_BLOOMS_ELEMENTS_PER_INDEX: usize = 16;
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/// Interface for querying blocks by hash and by number.
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pub trait BlockProvider {
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/// Returns true if the given block is known
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/// (though not necessarily a part of the canon chain).
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fn is_known(&self, hash: &H256) -> bool;
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/// Get the first block of the best part of the chain.
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/// Return `None` if there is no gap and the first block is the genesis.
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/// Any queries of blocks which precede this one are not guaranteed to
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/// succeed.
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fn first_block(&self) -> Option<H256>;
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/// Get the number of the first block.
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fn first_block_number(&self) -> Option<BlockNumber> {
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self.first_block().map(|b| self.block_number(&b).expect("First block is always set to an existing block or `None`. Existing block always has a number; qed"))
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}
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/// Get the best block of an first block sequence if there is a gap.
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fn best_ancient_block(&self) -> Option<H256>;
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/// Get the number of the first block.
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fn best_ancient_number(&self) -> Option<BlockNumber> {
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self.best_ancient_block().map(|h| self.block_number(&h).expect("Ancient block is always set to an existing block or `None`. Existing block always has a number; qed"))
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}
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/// Get raw block data
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fn block(&self, hash: &H256) -> Option<encoded::Block>;
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/// Get the familial details concerning a block.
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fn block_details(&self, hash: &H256) -> Option<BlockDetails>;
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/// Get the hash of given block's number.
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fn block_hash(&self, index: BlockNumber) -> Option<H256>;
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/// Get the address of transaction with given hash.
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fn transaction_address(&self, hash: &H256) -> Option<TransactionAddress>;
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/// Get receipts of block with given hash.
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fn block_receipts(&self, hash: &H256) -> Option<BlockReceipts>;
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/// Get the partial-header of a block.
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fn block_header(&self, hash: &H256) -> Option<Header> {
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self.block_header_data(hash).map(|header| header.decode())
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}
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/// Get the header RLP of a block.
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fn block_header_data(&self, hash: &H256) -> Option<encoded::Header>;
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/// Get the block body (uncles and transactions).
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fn block_body(&self, hash: &H256) -> Option<encoded::Body>;
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/// Get a list of uncles for a given block.
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/// Returns None if block does not exist.
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fn uncles(&self, hash: &H256) -> Option<Vec<Header>> {
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self.block_body(hash).map(|body| body.uncles())
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}
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/// Get a list of uncle hashes for a given block.
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/// Returns None if block does not exist.
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fn uncle_hashes(&self, hash: &H256) -> Option<Vec<H256>> {
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self.block_body(hash).map(|body| body.uncle_hashes())
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}
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/// Get the number of given block's hash.
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fn block_number(&self, hash: &H256) -> Option<BlockNumber> {
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self.block_details(hash).map(|details| details.number)
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}
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/// Get transaction with given transaction hash.
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fn transaction(&self, address: &TransactionAddress) -> Option<LocalizedTransaction> {
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self.block_body(&address.block_hash)
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.and_then(|body| self.block_number(&address.block_hash)
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.and_then(|n| body.view().localized_transaction_at(&address.block_hash, n, address.index)))
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}
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/// Get transaction receipt.
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fn transaction_receipt(&self, address: &TransactionAddress) -> Option<Receipt> {
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self.block_receipts(&address.block_hash).and_then(|br| br.receipts.into_iter().nth(address.index))
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}
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/// Get a list of transactions for a given block.
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/// Returns None if block does not exist.
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fn transactions(&self, hash: &H256) -> Option<Vec<LocalizedTransaction>> {
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self.block_body(hash)
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.and_then(|body| self.block_number(hash)
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.map(|n| body.view().localized_transactions(hash, n)))
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}
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/// Returns reference to genesis hash.
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fn genesis_hash(&self) -> H256 {
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self.block_hash(0).expect("Genesis hash should always exist")
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}
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/// Returns the header of the genesis block.
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fn genesis_header(&self) -> Header {
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self.block_header(&self.genesis_hash())
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.expect("Genesis header always stored; qed")
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}
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/// Returns numbers of blocks containing given bloom.
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fn blocks_with_bloom(&self, bloom: &H2048, from_block: BlockNumber, to_block: BlockNumber) -> Vec<BlockNumber>;
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/// Returns logs matching given filter.
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fn logs<F>(&self, blocks: Vec<BlockNumber>, matches: F, limit: Option<usize>) -> Vec<LocalizedLogEntry>
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where F: Fn(&LogEntry) -> bool, Self: Sized;
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}
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#[derive(Debug, Hash, Eq, PartialEq, Clone)]
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enum CacheId {
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BlockHeader(H256),
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BlockBody(H256),
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BlockDetails(H256),
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BlockHashes(BlockNumber),
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TransactionAddresses(H256),
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BlocksBlooms(LogGroupPosition),
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BlockReceipts(H256),
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}
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impl bc::group::BloomGroupDatabase for BlockChain {
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fn blooms_at(&self, position: &bc::group::GroupPosition) -> Option<bc::group::BloomGroup> {
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let position = LogGroupPosition::from(position.clone());
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let result = self.db.read_with_cache(db::COL_EXTRA, &self.blocks_blooms, &position).map(Into::into);
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self.cache_man.lock().note_used(CacheId::BlocksBlooms(position));
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result
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}
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}
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/// Structure providing fast access to blockchain data.
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///
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/// **Does not do input data verification.**
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pub struct BlockChain {
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// All locks must be captured in the order declared here.
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blooms_config: bc::Config,
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best_block: RwLock<BestBlock>,
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// Stores best block of the first uninterrupted sequence of blocks. `None` if there are no gaps.
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// Only updated with `insert_unordered_block`.
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best_ancient_block: RwLock<Option<BestAncientBlock>>,
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// Stores the last block of the last sequence of blocks. `None` if there are no gaps.
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// This is calculated on start and does not get updated.
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first_block: Option<H256>,
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// block cache
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block_headers: RwLock<HashMap<H256, Bytes>>,
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block_bodies: RwLock<HashMap<H256, Bytes>>,
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// extra caches
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block_details: RwLock<HashMap<H256, BlockDetails>>,
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block_hashes: RwLock<HashMap<BlockNumber, H256>>,
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transaction_addresses: RwLock<HashMap<H256, TransactionAddress>>,
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blocks_blooms: RwLock<HashMap<LogGroupPosition, BloomGroup>>,
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block_receipts: RwLock<HashMap<H256, BlockReceipts>>,
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db: Arc<KeyValueDB>,
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cache_man: Mutex<CacheManager<CacheId>>,
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pending_best_block: RwLock<Option<BestBlock>>,
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pending_block_hashes: RwLock<HashMap<BlockNumber, H256>>,
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pending_block_details: RwLock<HashMap<H256, BlockDetails>>,
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pending_transaction_addresses: RwLock<HashMap<H256, Option<TransactionAddress>>>,
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}
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impl BlockProvider for BlockChain {
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/// Returns true if the given block is known
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/// (though not necessarily a part of the canon chain).
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fn is_known(&self, hash: &H256) -> bool {
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self.db.exists_with_cache(db::COL_EXTRA, &self.block_details, hash)
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}
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fn first_block(&self) -> Option<H256> {
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self.first_block.clone()
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}
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fn best_ancient_block(&self) -> Option<H256> {
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self.best_ancient_block.read().as_ref().map(|b| b.hash.clone())
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}
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fn best_ancient_number(&self) -> Option<BlockNumber> {
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self.best_ancient_block.read().as_ref().map(|b| b.number)
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}
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/// Get raw block data
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fn block(&self, hash: &H256) -> Option<encoded::Block> {
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match (self.block_header_data(hash), self.block_body(hash)) {
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(Some(header), Some(body)) => {
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let mut block = RlpStream::new_list(3);
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let body_rlp = body.rlp();
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block.append_raw(header.rlp().as_raw(), 1);
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block.append_raw(body_rlp.at(0).as_raw(), 1);
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block.append_raw(body_rlp.at(1).as_raw(), 1);
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Some(encoded::Block::new(block.out()))
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},
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_ => None,
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}
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}
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/// Get block header data
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fn block_header_data(&self, hash: &H256) -> Option<encoded::Header> {
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// Check cache first
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{
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let read = self.block_headers.read();
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if let Some(v) = read.get(hash) {
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return Some(encoded::Header::new(v.clone()));
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}
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}
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// Check if it's the best block
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{
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let best_block = self.best_block.read();
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if &best_block.hash == hash {
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return Some(encoded::Header::new(
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Rlp::new(&best_block.block).at(0).as_raw().to_vec()
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))
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}
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}
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// Read from DB and populate cache
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let opt = self.db.get(db::COL_HEADERS, hash)
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.expect("Low level database error. Some issue with disk?");
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let result = match opt {
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Some(b) => {
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let bytes: Bytes = UntrustedRlp::new(&b).decompress(RlpType::Blocks).to_vec();
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let mut write = self.block_headers.write();
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write.insert(hash.clone(), bytes.clone());
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Some(encoded::Header::new(bytes))
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},
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None => None
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};
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self.cache_man.lock().note_used(CacheId::BlockHeader(hash.clone()));
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result
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}
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/// Get block body data
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fn block_body(&self, hash: &H256) -> Option<encoded::Body> {
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// Check cache first
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{
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let read = self.block_bodies.read();
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if let Some(v) = read.get(hash) {
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return Some(encoded::Body::new(v.clone()));
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}
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}
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// Check if it's the best block
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{
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let best_block = self.best_block.read();
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if &best_block.hash == hash {
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return Some(encoded::Body::new(Self::block_to_body(&best_block.block)));
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}
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}
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// Read from DB and populate cache
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let opt = self.db.get(db::COL_BODIES, hash)
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.expect("Low level database error. Some issue with disk?");
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let result = match opt {
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Some(b) => {
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let bytes: Bytes = UntrustedRlp::new(&b).decompress(RlpType::Blocks).to_vec();
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let mut write = self.block_bodies.write();
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write.insert(hash.clone(), bytes.clone());
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Some(encoded::Body::new(bytes))
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},
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None => None
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};
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self.cache_man.lock().note_used(CacheId::BlockBody(hash.clone()));
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result
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}
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/// Get the familial details concerning a block.
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fn block_details(&self, hash: &H256) -> Option<BlockDetails> {
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let result = self.db.read_with_cache(db::COL_EXTRA, &self.block_details, hash);
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self.cache_man.lock().note_used(CacheId::BlockDetails(hash.clone()));
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result
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}
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/// Get the hash of given block's number.
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fn block_hash(&self, index: BlockNumber) -> Option<H256> {
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let result = self.db.read_with_cache(db::COL_EXTRA, &self.block_hashes, &index);
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self.cache_man.lock().note_used(CacheId::BlockHashes(index));
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result
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}
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/// Get the address of transaction with given hash.
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fn transaction_address(&self, hash: &H256) -> Option<TransactionAddress> {
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let result = self.db.read_with_cache(db::COL_EXTRA, &self.transaction_addresses, hash);
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self.cache_man.lock().note_used(CacheId::TransactionAddresses(hash.clone()));
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result
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}
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/// Get receipts of block with given hash.
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fn block_receipts(&self, hash: &H256) -> Option<BlockReceipts> {
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let result = self.db.read_with_cache(db::COL_EXTRA, &self.block_receipts, hash);
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self.cache_man.lock().note_used(CacheId::BlockReceipts(hash.clone()));
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result
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}
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/// Returns numbers of blocks containing given bloom.
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fn blocks_with_bloom(&self, bloom: &H2048, from_block: BlockNumber, to_block: BlockNumber) -> Vec<BlockNumber> {
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let range = from_block as bc::Number..to_block as bc::Number;
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let chain = bc::group::BloomGroupChain::new(self.blooms_config, self);
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chain.with_bloom(&range, &Bloom::from(bloom.clone()).into())
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.into_iter()
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.map(|b| b as BlockNumber)
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.collect()
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}
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fn logs<F>(&self, mut blocks: Vec<BlockNumber>, matches: F, limit: Option<usize>) -> Vec<LocalizedLogEntry>
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where F: Fn(&LogEntry) -> bool, Self: Sized {
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// sort in reverse order
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blocks.sort_by(|a, b| b.cmp(a));
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let mut log_index = 0;
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let mut logs = blocks.into_iter()
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.filter_map(|number| self.block_hash(number).map(|hash| (number, hash)))
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.filter_map(|(number, hash)| self.block_receipts(&hash).map(|r| (number, hash, r.receipts)))
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.filter_map(|(number, hash, receipts)| self.block_body(&hash).map(|ref b| (number, hash, receipts, b.transaction_hashes())))
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.flat_map(|(number, hash, mut receipts, mut hashes)| {
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if receipts.len() != hashes.len() {
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warn!("Block {} ({}) has different number of receipts ({}) to transactions ({}). Database corrupt?", number, hash, receipts.len(), hashes.len());
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assert!(false);
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}
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log_index = receipts.iter().fold(0, |sum, receipt| sum + receipt.logs.len());
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let receipts_len = receipts.len();
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hashes.reverse();
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receipts.reverse();
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receipts.into_iter()
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.map(|receipt| receipt.logs)
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.zip(hashes)
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.enumerate()
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.flat_map(move |(index, (mut logs, tx_hash))| {
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let current_log_index = log_index;
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let no_of_logs = logs.len();
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log_index -= no_of_logs;
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logs.reverse();
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logs.into_iter()
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.enumerate()
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.map(move |(i, log)| LocalizedLogEntry {
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entry: log,
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block_hash: hash,
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block_number: number,
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transaction_hash: tx_hash,
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// iterating in reverse order
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transaction_index: receipts_len - index - 1,
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transaction_log_index: no_of_logs - i - 1,
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log_index: current_log_index - i - 1,
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})
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})
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})
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.filter(|log_entry| matches(&log_entry.entry))
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.take(limit.unwrap_or(::std::usize::MAX))
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.collect::<Vec<LocalizedLogEntry>>();
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logs.reverse();
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logs
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}
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}
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/// An iterator which walks the blockchain towards the genesis.
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#[derive(Clone)]
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pub struct AncestryIter<'a> {
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current: H256,
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chain: &'a BlockChain,
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}
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impl<'a> Iterator for AncestryIter<'a> {
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type Item = H256;
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fn next(&mut self) -> Option<H256> {
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if self.current.is_zero() {
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None
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} else {
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self.chain.block_details(&self.current)
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.map(|details| mem::replace(&mut self.current, details.parent))
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}
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}
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}
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/// An iterator which walks all epoch transitions.
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/// Returns epoch transitions.
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pub struct EpochTransitionIter<'a> {
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chain: &'a BlockChain,
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prefix_iter: Box<Iterator<Item=(Box<[u8]>, Box<[u8]>)> + 'a>,
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}
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impl<'a> Iterator for EpochTransitionIter<'a> {
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type Item = (u64, EpochTransition);
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fn next(&mut self) -> Option<Self::Item> {
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loop {
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match self.prefix_iter.next() {
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Some((key, val)) => {
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// iterator may continue beyond values beginning with this
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// prefix.
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if !key.starts_with(&EPOCH_KEY_PREFIX[..]) { return None }
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let transitions: EpochTransitions = ::rlp::decode(&val[..]);
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// if there are multiple candidates, at most one will be on the
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// canon chain.
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for transition in transitions.candidates.into_iter() {
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let is_in_canon_chain = self.chain.block_hash(transition.block_number)
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.map_or(false, |hash| hash == transition.block_hash);
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if is_in_canon_chain {
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return Some((transitions.number, transition))
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}
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}
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// some epochs never occurred on the main chain.
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}
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None => return None,
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}
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}
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}
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}
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impl BlockChain {
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/// Create new instance of blockchain from given Genesis.
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pub fn new(config: Config, genesis: &[u8], db: Arc<KeyValueDB>) -> BlockChain {
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// 400 is the avarage size of the key
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let cache_man = CacheManager::new(config.pref_cache_size, config.max_cache_size, 400);
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let mut bc = BlockChain {
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blooms_config: bc::Config {
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levels: LOG_BLOOMS_LEVELS,
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elements_per_index: LOG_BLOOMS_ELEMENTS_PER_INDEX,
|
|
},
|
|
first_block: None,
|
|
best_block: RwLock::new(BestBlock::default()),
|
|
best_ancient_block: RwLock::new(None),
|
|
block_headers: RwLock::new(HashMap::new()),
|
|
block_bodies: RwLock::new(HashMap::new()),
|
|
block_details: RwLock::new(HashMap::new()),
|
|
block_hashes: RwLock::new(HashMap::new()),
|
|
transaction_addresses: RwLock::new(HashMap::new()),
|
|
blocks_blooms: RwLock::new(HashMap::new()),
|
|
block_receipts: RwLock::new(HashMap::new()),
|
|
db: db.clone(),
|
|
cache_man: Mutex::new(cache_man),
|
|
pending_best_block: RwLock::new(None),
|
|
pending_block_hashes: RwLock::new(HashMap::new()),
|
|
pending_block_details: RwLock::new(HashMap::new()),
|
|
pending_transaction_addresses: RwLock::new(HashMap::new()),
|
|
};
|
|
|
|
// load best block
|
|
let best_block_hash = match bc.db.get(db::COL_EXTRA, b"best").unwrap() {
|
|
Some(best) => {
|
|
H256::from_slice(&best)
|
|
}
|
|
None => {
|
|
// best block does not exist
|
|
// we need to insert genesis into the cache
|
|
let block = BlockView::new(genesis);
|
|
let header = block.header_view();
|
|
let hash = block.sha3();
|
|
|
|
let details = BlockDetails {
|
|
number: header.number(),
|
|
total_difficulty: header.difficulty(),
|
|
parent: header.parent_hash(),
|
|
children: vec![]
|
|
};
|
|
|
|
let mut batch = DBTransaction::new();
|
|
batch.put(db::COL_HEADERS, &hash, block.header_rlp().as_raw());
|
|
batch.put(db::COL_BODIES, &hash, &Self::block_to_body(genesis));
|
|
|
|
batch.write(db::COL_EXTRA, &hash, &details);
|
|
batch.write(db::COL_EXTRA, &header.number(), &hash);
|
|
|
|
batch.put(db::COL_EXTRA, b"best", &hash);
|
|
bc.db.write(batch).expect("Low level database error. Some issue with disk?");
|
|
hash
|
|
}
|
|
};
|
|
|
|
{
|
|
// Fetch best block details
|
|
let best_block_number = bc.block_number(&best_block_hash).unwrap();
|
|
let best_block_total_difficulty = bc.block_details(&best_block_hash).unwrap().total_difficulty;
|
|
let best_block_rlp = bc.block(&best_block_hash).unwrap().into_inner();
|
|
let best_block_timestamp = BlockView::new(&best_block_rlp).header().timestamp();
|
|
|
|
let raw_first = bc.db.get(db::COL_EXTRA, b"first").unwrap().map(|v| v.to_vec());
|
|
let mut best_ancient = bc.db.get(db::COL_EXTRA, b"ancient").unwrap().map(|h| H256::from_slice(&h));
|
|
let best_ancient_number;
|
|
if best_ancient.is_none() && best_block_number > 1 && bc.block_hash(1).is_none() {
|
|
best_ancient = Some(bc.genesis_hash());
|
|
best_ancient_number = Some(0);
|
|
} else {
|
|
best_ancient_number = best_ancient.as_ref().and_then(|h| bc.block_number(h));
|
|
}
|
|
|
|
// binary search for the first block.
|
|
match raw_first {
|
|
None => {
|
|
let (mut f, mut hash) = (best_block_number, best_block_hash);
|
|
let mut l = best_ancient_number.unwrap_or(0);
|
|
|
|
loop {
|
|
if l >= f { break; }
|
|
|
|
let step = (f - l) >> 1;
|
|
let m = l + step;
|
|
|
|
match bc.block_hash(m) {
|
|
Some(h) => { f = m; hash = h },
|
|
None => { l = m + 1 },
|
|
}
|
|
}
|
|
|
|
if hash != bc.genesis_hash() {
|
|
trace!("First block calculated: {:?}", hash);
|
|
let mut batch = db.transaction();
|
|
batch.put(db::COL_EXTRA, b"first", &hash);
|
|
db.write(batch).expect("Low level database error.");
|
|
bc.first_block = Some(hash);
|
|
}
|
|
},
|
|
Some(raw_first) => {
|
|
bc.first_block = Some(H256::from_slice(&raw_first));
|
|
},
|
|
}
|
|
|
|
// and write them
|
|
let mut best_block = bc.best_block.write();
|
|
*best_block = BestBlock {
|
|
number: best_block_number,
|
|
total_difficulty: best_block_total_difficulty,
|
|
hash: best_block_hash,
|
|
timestamp: best_block_timestamp,
|
|
block: best_block_rlp,
|
|
};
|
|
|
|
if let (Some(hash), Some(number)) = (best_ancient, best_ancient_number) {
|
|
let mut best_ancient_block = bc.best_ancient_block.write();
|
|
*best_ancient_block = Some(BestAncientBlock {
|
|
hash: hash,
|
|
number: number,
|
|
});
|
|
}
|
|
}
|
|
|
|
bc
|
|
}
|
|
|
|
/// Returns true if the given parent block has given child
|
|
/// (though not necessarily a part of the canon chain).
|
|
fn is_known_child(&self, parent: &H256, hash: &H256) -> bool {
|
|
self.db.read_with_cache(db::COL_EXTRA, &self.block_details, parent).map_or(false, |d| d.children.contains(hash))
|
|
}
|
|
|
|
/// Rewind to a previous block
|
|
#[cfg(test)]
|
|
fn rewind(&self) -> Option<H256> {
|
|
use db::Key;
|
|
let mut batch =self.db.transaction();
|
|
// track back to the best block we have in the blocks database
|
|
if let Some(best_block_hash) = self.db.get(db::COL_EXTRA, b"best").unwrap() {
|
|
let best_block_hash = H256::from_slice(&best_block_hash);
|
|
if best_block_hash == self.genesis_hash() {
|
|
return None;
|
|
}
|
|
if let Some(extras) = self.db.read(db::COL_EXTRA, &best_block_hash) as Option<BlockDetails> {
|
|
type DetailsKey = Key<BlockDetails, Target=H264>;
|
|
batch.delete(db::COL_EXTRA, &(DetailsKey::key(&best_block_hash)));
|
|
let hash = extras.parent;
|
|
let range = extras.number as bc::Number .. extras.number as bc::Number;
|
|
let chain = bc::group::BloomGroupChain::new(self.blooms_config, self);
|
|
let changes = chain.replace(&range, vec![]);
|
|
for (k, v) in changes {
|
|
batch.write(db::COL_EXTRA, &LogGroupPosition::from(k), &BloomGroup::from(v));
|
|
}
|
|
batch.put(db::COL_EXTRA, b"best", &hash);
|
|
|
|
let best_block_total_difficulty = self.block_details(&hash).unwrap().total_difficulty;
|
|
let best_block_rlp = self.block(&hash).unwrap().into_inner();
|
|
|
|
let mut best_block = self.best_block.write();
|
|
*best_block = BestBlock {
|
|
number: extras.number - 1,
|
|
total_difficulty: best_block_total_difficulty,
|
|
hash: hash,
|
|
timestamp: BlockView::new(&best_block_rlp).header().timestamp(),
|
|
block: best_block_rlp,
|
|
};
|
|
// update parent extras
|
|
if let Some(mut details) = self.db.read(db::COL_EXTRA, &hash) as Option<BlockDetails> {
|
|
details.children.clear();
|
|
batch.write(db::COL_EXTRA, &hash, &details);
|
|
}
|
|
self.db.write(batch).expect("Writing to db failed");
|
|
self.block_details.write().clear();
|
|
self.block_hashes.write().clear();
|
|
self.block_headers.write().clear();
|
|
self.block_bodies.write().clear();
|
|
self.block_receipts.write().clear();
|
|
return Some(hash);
|
|
}
|
|
}
|
|
|
|
None
|
|
}
|
|
|
|
/// Returns a tree route between `from` and `to`, which is a tuple of:
|
|
///
|
|
/// - a vector of hashes of all blocks, ordered from `from` to `to`.
|
|
///
|
|
/// - common ancestor of these blocks.
|
|
///
|
|
/// - an index where best common ancestor would be
|
|
///
|
|
/// 1.) from newer to older
|
|
///
|
|
/// - bc: `A1 -> A2 -> A3 -> A4 -> A5`
|
|
/// - from: A5, to: A4
|
|
/// - route:
|
|
///
|
|
/// ```json
|
|
/// { blocks: [A5], ancestor: A4, index: 1 }
|
|
/// ```
|
|
///
|
|
/// 2.) from older to newer
|
|
///
|
|
/// - bc: `A1 -> A2 -> A3 -> A4 -> A5`
|
|
/// - from: A3, to: A4
|
|
/// - route:
|
|
///
|
|
/// ```json
|
|
/// { blocks: [A4], ancestor: A3, index: 0 }
|
|
/// ```
|
|
///
|
|
/// 3.) fork:
|
|
///
|
|
/// - bc:
|
|
///
|
|
/// ```text
|
|
/// A1 -> A2 -> A3 -> A4
|
|
/// -> B3 -> B4
|
|
/// ```
|
|
/// - from: B4, to: A4
|
|
/// - route:
|
|
///
|
|
/// ```json
|
|
/// { blocks: [B4, B3, A3, A4], ancestor: A2, index: 2 }
|
|
/// ```
|
|
///
|
|
/// If the tree route verges into pruned or unknown blocks,
|
|
/// `None` is returned.
|
|
pub fn tree_route(&self, from: H256, to: H256) -> Option<TreeRoute> {
|
|
macro_rules! otry {
|
|
($e:expr) => { match $e { Some(x) => x, None => return None } }
|
|
}
|
|
|
|
let mut from_branch = vec![];
|
|
let mut to_branch = vec![];
|
|
|
|
let mut from_details = otry!(self.block_details(&from));
|
|
let mut to_details = otry!(self.block_details(&to));
|
|
let mut current_from = from;
|
|
let mut current_to = to;
|
|
|
|
// reset from && to to the same level
|
|
while from_details.number > to_details.number {
|
|
from_branch.push(current_from);
|
|
current_from = from_details.parent.clone();
|
|
from_details = otry!(self.block_details(&from_details.parent));
|
|
}
|
|
|
|
while to_details.number > from_details.number {
|
|
to_branch.push(current_to);
|
|
current_to = to_details.parent.clone();
|
|
to_details = otry!(self.block_details(&to_details.parent));
|
|
}
|
|
|
|
assert_eq!(from_details.number, to_details.number);
|
|
|
|
// move to shared parent
|
|
while current_from != current_to {
|
|
from_branch.push(current_from);
|
|
current_from = from_details.parent.clone();
|
|
from_details = otry!(self.block_details(&from_details.parent));
|
|
|
|
to_branch.push(current_to);
|
|
current_to = to_details.parent.clone();
|
|
to_details = otry!(self.block_details(&to_details.parent));
|
|
}
|
|
|
|
let index = from_branch.len();
|
|
|
|
from_branch.extend(to_branch.into_iter().rev());
|
|
|
|
Some(TreeRoute {
|
|
blocks: from_branch,
|
|
ancestor: current_from,
|
|
index: index
|
|
})
|
|
}
|
|
|
|
/// Inserts a verified, known block from the canonical chain.
|
|
///
|
|
/// Can be performed out-of-order, but care must be taken that the final chain is in a correct state.
|
|
/// This is used by snapshot restoration and when downloading missing blocks for the chain gap.
|
|
/// `is_best` forces the best block to be updated to this block.
|
|
/// `is_ancient` forces the best block of the first block sequence to be updated to this block.
|
|
/// Supply a dummy parent total difficulty when the parent block may not be in the chain.
|
|
/// Returns true if the block is disconnected.
|
|
pub fn insert_unordered_block(&self, batch: &mut DBTransaction, bytes: &[u8], receipts: Vec<Receipt>, parent_td: Option<U256>, is_best: bool, is_ancient: bool) -> bool {
|
|
let block = BlockView::new(bytes);
|
|
let header = block.header_view();
|
|
let hash = header.sha3();
|
|
|
|
if self.is_known(&hash) {
|
|
return false;
|
|
}
|
|
|
|
assert!(self.pending_best_block.read().is_none());
|
|
|
|
let block_rlp = UntrustedRlp::new(bytes);
|
|
let compressed_header = block_rlp.at(0).unwrap().compress(RlpType::Blocks);
|
|
let compressed_body = UntrustedRlp::new(&Self::block_to_body(bytes)).compress(RlpType::Blocks);
|
|
|
|
// store block in db
|
|
batch.put(db::COL_HEADERS, &hash, &compressed_header);
|
|
batch.put(db::COL_BODIES, &hash, &compressed_body);
|
|
|
|
let maybe_parent = self.block_details(&header.parent_hash());
|
|
|
|
if let Some(parent_details) = maybe_parent {
|
|
// parent known to be in chain.
|
|
let info = BlockInfo {
|
|
hash: hash.clone(),
|
|
number: header.number(),
|
|
total_difficulty: parent_details.total_difficulty + header.difficulty(),
|
|
location: BlockLocation::CanonChain,
|
|
};
|
|
|
|
self.prepare_update(batch, ExtrasUpdate {
|
|
block_hashes: self.prepare_block_hashes_update(bytes, &info),
|
|
block_details: self.prepare_block_details_update(bytes, &info),
|
|
block_receipts: self.prepare_block_receipts_update(receipts, &info),
|
|
blocks_blooms: self.prepare_block_blooms_update(bytes, &info),
|
|
transactions_addresses: self.prepare_transaction_addresses_update(bytes, &info),
|
|
info: info,
|
|
timestamp: header.timestamp(),
|
|
block: bytes
|
|
}, is_best);
|
|
|
|
if is_ancient {
|
|
let mut best_ancient_block = self.best_ancient_block.write();
|
|
let ancient_number = best_ancient_block.as_ref().map_or(0, |b| b.number);
|
|
if self.block_hash(header.number() + 1).is_some() {
|
|
batch.delete(db::COL_EXTRA, b"ancient");
|
|
*best_ancient_block = None;
|
|
} else if header.number() > ancient_number {
|
|
batch.put(db::COL_EXTRA, b"ancient", &hash);
|
|
*best_ancient_block = Some(BestAncientBlock {
|
|
hash: hash,
|
|
number: header.number(),
|
|
});
|
|
}
|
|
}
|
|
|
|
false
|
|
} else {
|
|
// parent not in the chain yet. we need the parent difficulty to proceed.
|
|
let d = parent_td
|
|
.expect("parent total difficulty always supplied for first block in chunk. only first block can have missing parent; qed");
|
|
|
|
let info = BlockInfo {
|
|
hash: hash,
|
|
number: header.number(),
|
|
total_difficulty: d + header.difficulty(),
|
|
location: BlockLocation::CanonChain,
|
|
};
|
|
|
|
let block_details = BlockDetails {
|
|
number: header.number(),
|
|
total_difficulty: info.total_difficulty,
|
|
parent: header.parent_hash(),
|
|
children: Vec::new(),
|
|
};
|
|
|
|
let mut update = HashMap::new();
|
|
update.insert(hash, block_details);
|
|
|
|
self.prepare_update(batch, ExtrasUpdate {
|
|
block_hashes: self.prepare_block_hashes_update(bytes, &info),
|
|
block_details: update,
|
|
block_receipts: self.prepare_block_receipts_update(receipts, &info),
|
|
blocks_blooms: self.prepare_block_blooms_update(bytes, &info),
|
|
transactions_addresses: self.prepare_transaction_addresses_update(bytes, &info),
|
|
info: info,
|
|
timestamp: header.timestamp(),
|
|
block: bytes,
|
|
}, is_best);
|
|
true
|
|
}
|
|
}
|
|
|
|
/// Insert an epoch transition. Provide an epoch number being transitioned to
|
|
/// and epoch transition object.
|
|
///
|
|
/// The block the transition occurred at should have already been inserted into the chain.
|
|
pub fn insert_epoch_transition(&self, batch: &mut DBTransaction, epoch_num: u64, transition: EpochTransition) {
|
|
let mut transitions = match self.db.read(db::COL_EXTRA, &epoch_num) {
|
|
Some(existing) => existing,
|
|
None => EpochTransitions {
|
|
number: epoch_num,
|
|
candidates: Vec::with_capacity(1),
|
|
}
|
|
};
|
|
|
|
// ensure we don't write any duplicates.
|
|
if transitions.candidates.iter().find(|c| c.block_hash == transition.block_hash).is_none() {
|
|
transitions.candidates.push(transition);
|
|
batch.write(db::COL_EXTRA, &epoch_num, &transitions);
|
|
}
|
|
}
|
|
|
|
/// Iterate over all epoch transitions.
|
|
pub fn epoch_transitions(&self) -> EpochTransitionIter {
|
|
let iter = self.db.iter_from_prefix(db::COL_EXTRA, &EPOCH_KEY_PREFIX[..]);
|
|
EpochTransitionIter {
|
|
chain: self,
|
|
prefix_iter: iter,
|
|
}
|
|
}
|
|
|
|
/// Add a child to a given block. Assumes that the block hash is in
|
|
/// the chain and the child's parent is this block.
|
|
///
|
|
/// Used in snapshots to glue the chunks together at the end.
|
|
pub fn add_child(&self, batch: &mut DBTransaction, block_hash: H256, child_hash: H256) {
|
|
let mut parent_details = self.block_details(&block_hash)
|
|
.unwrap_or_else(|| panic!("Invalid block hash: {:?}", block_hash));
|
|
|
|
parent_details.children.push(child_hash);
|
|
|
|
let mut update = HashMap::new();
|
|
update.insert(block_hash, parent_details);
|
|
|
|
|
|
let mut write_details = self.block_details.write();
|
|
batch.extend_with_cache(db::COL_EXTRA, &mut *write_details, update, CacheUpdatePolicy::Overwrite);
|
|
|
|
self.cache_man.lock().note_used(CacheId::BlockDetails(block_hash));
|
|
}
|
|
|
|
#[cfg_attr(feature="dev", allow(similar_names))]
|
|
/// Inserts the block into backing cache database.
|
|
/// Expects the block to be valid and already verified.
|
|
/// If the block is already known, does nothing.
|
|
pub fn insert_block(&self, batch: &mut DBTransaction, bytes: &[u8], receipts: Vec<Receipt>) -> ImportRoute {
|
|
// create views onto rlp
|
|
let block = BlockView::new(bytes);
|
|
let header = block.header_view();
|
|
let hash = header.sha3();
|
|
|
|
if self.is_known_child(&header.parent_hash(), &hash) {
|
|
return ImportRoute::none();
|
|
}
|
|
|
|
assert!(self.pending_best_block.read().is_none());
|
|
|
|
// store block in db
|
|
batch.put_compressed(db::COL_HEADERS, &hash, block.header_rlp().as_raw().to_vec());
|
|
batch.put_compressed(db::COL_BODIES, &hash, Self::block_to_body(bytes));
|
|
|
|
let info = self.block_info(&header);
|
|
|
|
if let BlockLocation::BranchBecomingCanonChain(ref d) = info.location {
|
|
info!(target: "reorg", "Reorg to {} ({} {} {})",
|
|
Colour::Yellow.bold().paint(format!("#{} {}", info.number, info.hash)),
|
|
Colour::Red.paint(d.retracted.iter().join(" ")),
|
|
Colour::White.paint(format!("#{} {}", self.block_details(&d.ancestor).expect("`ancestor` is in the route; qed").number, d.ancestor)),
|
|
Colour::Green.paint(d.enacted.iter().join(" "))
|
|
);
|
|
}
|
|
|
|
self.prepare_update(batch, ExtrasUpdate {
|
|
block_hashes: self.prepare_block_hashes_update(bytes, &info),
|
|
block_details: self.prepare_block_details_update(bytes, &info),
|
|
block_receipts: self.prepare_block_receipts_update(receipts, &info),
|
|
blocks_blooms: self.prepare_block_blooms_update(bytes, &info),
|
|
transactions_addresses: self.prepare_transaction_addresses_update(bytes, &info),
|
|
info: info.clone(),
|
|
timestamp: header.timestamp(),
|
|
block: bytes,
|
|
}, true);
|
|
|
|
ImportRoute::from(info)
|
|
}
|
|
|
|
/// Get inserted block info which is critical to prepare extras updates.
|
|
fn block_info(&self, header: &HeaderView) -> BlockInfo {
|
|
let hash = header.sha3();
|
|
let number = header.number();
|
|
let parent_hash = header.parent_hash();
|
|
let parent_details = self.block_details(&parent_hash).unwrap_or_else(|| panic!("Invalid parent hash: {:?}", parent_hash));
|
|
let is_new_best = parent_details.total_difficulty + header.difficulty() > self.best_block_total_difficulty();
|
|
|
|
BlockInfo {
|
|
hash: hash,
|
|
number: number,
|
|
total_difficulty: parent_details.total_difficulty + header.difficulty(),
|
|
location: if is_new_best {
|
|
// on new best block we need to make sure that all ancestors
|
|
// are moved to "canon chain"
|
|
// find the route between old best block and the new one
|
|
let best_hash = self.best_block_hash();
|
|
let route = self.tree_route(best_hash, parent_hash)
|
|
.expect("blocks being imported always within recent history; qed");
|
|
|
|
assert_eq!(number, parent_details.number + 1);
|
|
|
|
match route.blocks.len() {
|
|
0 => BlockLocation::CanonChain,
|
|
_ => {
|
|
let retracted = route.blocks.iter().take(route.index).cloned().collect::<Vec<_>>().into_iter().collect::<Vec<_>>();
|
|
let enacted = route.blocks.into_iter().skip(route.index).collect::<Vec<_>>();
|
|
BlockLocation::BranchBecomingCanonChain(BranchBecomingCanonChainData {
|
|
ancestor: route.ancestor,
|
|
enacted: enacted,
|
|
retracted: retracted,
|
|
})
|
|
}
|
|
}
|
|
} else {
|
|
BlockLocation::Branch
|
|
}
|
|
}
|
|
}
|
|
|
|
/// Prepares extras update.
|
|
fn prepare_update(&self, batch: &mut DBTransaction, update: ExtrasUpdate, is_best: bool) {
|
|
|
|
{
|
|
let mut write_receipts = self.block_receipts.write();
|
|
batch.extend_with_cache(db::COL_EXTRA, &mut *write_receipts, update.block_receipts, CacheUpdatePolicy::Remove);
|
|
}
|
|
|
|
{
|
|
let mut write_blocks_blooms = self.blocks_blooms.write();
|
|
batch.extend_with_cache(db::COL_EXTRA, &mut *write_blocks_blooms, update.blocks_blooms, CacheUpdatePolicy::Remove);
|
|
}
|
|
|
|
// These cached values must be updated last with all four locks taken to avoid
|
|
// cache decoherence
|
|
{
|
|
let mut best_block = self.pending_best_block.write();
|
|
// update best block
|
|
match update.info.location {
|
|
BlockLocation::Branch => (),
|
|
_ => if is_best {
|
|
batch.put(db::COL_EXTRA, b"best", &update.info.hash);
|
|
*best_block = Some(BestBlock {
|
|
hash: update.info.hash,
|
|
number: update.info.number,
|
|
total_difficulty: update.info.total_difficulty,
|
|
timestamp: update.timestamp,
|
|
block: update.block.to_vec(),
|
|
});
|
|
},
|
|
}
|
|
let mut write_hashes = self.pending_block_hashes.write();
|
|
let mut write_details = self.pending_block_details.write();
|
|
let mut write_txs = self.pending_transaction_addresses.write();
|
|
|
|
batch.extend_with_cache(db::COL_EXTRA, &mut *write_details, update.block_details, CacheUpdatePolicy::Overwrite);
|
|
batch.extend_with_cache(db::COL_EXTRA, &mut *write_hashes, update.block_hashes, CacheUpdatePolicy::Overwrite);
|
|
batch.extend_with_option_cache(db::COL_EXTRA, &mut *write_txs, update.transactions_addresses, CacheUpdatePolicy::Overwrite);
|
|
}
|
|
}
|
|
|
|
/// Apply pending insertion updates
|
|
pub fn commit(&self) {
|
|
let mut pending_best_block = self.pending_best_block.write();
|
|
let mut pending_write_hashes = self.pending_block_hashes.write();
|
|
let mut pending_block_details = self.pending_block_details.write();
|
|
let mut pending_write_txs = self.pending_transaction_addresses.write();
|
|
|
|
let mut best_block = self.best_block.write();
|
|
let mut write_block_details = self.block_details.write();
|
|
let mut write_hashes = self.block_hashes.write();
|
|
let mut write_txs = self.transaction_addresses.write();
|
|
// update best block
|
|
if let Some(block) = pending_best_block.take() {
|
|
*best_block = block;
|
|
}
|
|
|
|
let pending_txs = mem::replace(&mut *pending_write_txs, HashMap::new());
|
|
let (retracted_txs, enacted_txs) = pending_txs.into_iter().partition::<HashMap<_, _>, _>(|&(_, ref value)| value.is_none());
|
|
|
|
let pending_hashes_keys: Vec<_> = pending_write_hashes.keys().cloned().collect();
|
|
let enacted_txs_keys: Vec<_> = enacted_txs.keys().cloned().collect();
|
|
let pending_block_hashes: Vec<_> = pending_block_details.keys().cloned().collect();
|
|
|
|
write_hashes.extend(mem::replace(&mut *pending_write_hashes, HashMap::new()));
|
|
write_txs.extend(enacted_txs.into_iter().map(|(k, v)| (k, v.expect("Transactions were partitioned; qed"))));
|
|
write_block_details.extend(mem::replace(&mut *pending_block_details, HashMap::new()));
|
|
|
|
for hash in retracted_txs.keys() {
|
|
write_txs.remove(hash);
|
|
}
|
|
|
|
let mut cache_man = self.cache_man.lock();
|
|
for n in pending_hashes_keys {
|
|
cache_man.note_used(CacheId::BlockHashes(n));
|
|
}
|
|
|
|
for hash in enacted_txs_keys {
|
|
cache_man.note_used(CacheId::TransactionAddresses(hash));
|
|
}
|
|
|
|
for hash in pending_block_hashes {
|
|
cache_man.note_used(CacheId::BlockDetails(hash));
|
|
}
|
|
}
|
|
|
|
/// Iterator that lists `first` and then all of `first`'s ancestors, by hash.
|
|
pub fn ancestry_iter(&self, first: H256) -> Option<AncestryIter> {
|
|
if self.is_known(&first) {
|
|
Some(AncestryIter {
|
|
current: first,
|
|
chain: self,
|
|
})
|
|
} else {
|
|
None
|
|
}
|
|
}
|
|
|
|
/// Given a block's `parent`, find every block header which represents a valid possible uncle.
|
|
pub fn find_uncle_headers(&self, parent: &H256, uncle_generations: usize) -> Option<Vec<Header>> {
|
|
self.find_uncle_hashes(parent, uncle_generations).map(|v| v.into_iter().filter_map(|h| self.block_header(&h)).collect())
|
|
}
|
|
|
|
/// Given a block's `parent`, find every block hash which represents a valid possible uncle.
|
|
pub fn find_uncle_hashes(&self, parent: &H256, uncle_generations: usize) -> Option<Vec<H256>> {
|
|
if !self.is_known(parent) { return None; }
|
|
|
|
let mut excluded = HashSet::new();
|
|
let ancestry = match self.ancestry_iter(parent.clone()) {
|
|
Some(iter) => iter,
|
|
None => return None,
|
|
};
|
|
|
|
for a in ancestry.clone().take(uncle_generations) {
|
|
if let Some(uncles) = self.uncle_hashes(&a) {
|
|
excluded.extend(uncles);
|
|
excluded.insert(a);
|
|
} else {
|
|
break
|
|
}
|
|
}
|
|
|
|
let mut ret = Vec::new();
|
|
for a in ancestry.skip(1).take(uncle_generations) {
|
|
if let Some(details) = self.block_details(&a) {
|
|
ret.extend(details.children.iter().filter(|h| !excluded.contains(h)))
|
|
} else {
|
|
break
|
|
}
|
|
}
|
|
|
|
Some(ret)
|
|
}
|
|
|
|
/// This function returns modified block hashes.
|
|
fn prepare_block_hashes_update(&self, block_bytes: &[u8], info: &BlockInfo) -> HashMap<BlockNumber, H256> {
|
|
let mut block_hashes = HashMap::new();
|
|
let block = BlockView::new(block_bytes);
|
|
let header = block.header_view();
|
|
let number = header.number();
|
|
|
|
match info.location {
|
|
BlockLocation::Branch => (),
|
|
BlockLocation::CanonChain => {
|
|
block_hashes.insert(number, info.hash.clone());
|
|
},
|
|
BlockLocation::BranchBecomingCanonChain(ref data) => {
|
|
let ancestor_number = self.block_number(&data.ancestor).expect("Block number of ancestor is always in DB");
|
|
let start_number = ancestor_number + 1;
|
|
|
|
for (index, hash) in data.enacted.iter().cloned().enumerate() {
|
|
block_hashes.insert(start_number + index as BlockNumber, hash);
|
|
}
|
|
|
|
block_hashes.insert(number, info.hash.clone());
|
|
}
|
|
}
|
|
|
|
block_hashes
|
|
}
|
|
|
|
/// This function returns modified block details.
|
|
/// Uses the given parent details or attempts to load them from the database.
|
|
fn prepare_block_details_update(&self, block_bytes: &[u8], info: &BlockInfo) -> HashMap<H256, BlockDetails> {
|
|
let block = BlockView::new(block_bytes);
|
|
let header = block.header_view();
|
|
let parent_hash = header.parent_hash();
|
|
|
|
// update parent
|
|
let mut parent_details = self.block_details(&parent_hash).unwrap_or_else(|| panic!("Invalid parent hash: {:?}", parent_hash));
|
|
parent_details.children.push(info.hash.clone());
|
|
|
|
// create current block details
|
|
let details = BlockDetails {
|
|
number: header.number(),
|
|
total_difficulty: info.total_difficulty,
|
|
parent: parent_hash.clone(),
|
|
children: vec![]
|
|
};
|
|
|
|
// write to batch
|
|
let mut block_details = HashMap::new();
|
|
block_details.insert(parent_hash, parent_details);
|
|
block_details.insert(info.hash.clone(), details);
|
|
block_details
|
|
}
|
|
|
|
/// This function returns modified block receipts.
|
|
fn prepare_block_receipts_update(&self, receipts: Vec<Receipt>, info: &BlockInfo) -> HashMap<H256, BlockReceipts> {
|
|
let mut block_receipts = HashMap::new();
|
|
block_receipts.insert(info.hash.clone(), BlockReceipts::new(receipts));
|
|
block_receipts
|
|
}
|
|
|
|
/// This function returns modified transaction addresses.
|
|
fn prepare_transaction_addresses_update(&self, block_bytes: &[u8], info: &BlockInfo) -> HashMap<H256, Option<TransactionAddress>> {
|
|
let block = BlockView::new(block_bytes);
|
|
let transaction_hashes = block.transaction_hashes();
|
|
|
|
match info.location {
|
|
BlockLocation::CanonChain => {
|
|
transaction_hashes.into_iter()
|
|
.enumerate()
|
|
.map(|(i ,tx_hash)| {
|
|
(tx_hash, Some(TransactionAddress {
|
|
block_hash: info.hash.clone(),
|
|
index: i
|
|
}))
|
|
})
|
|
.collect()
|
|
},
|
|
BlockLocation::BranchBecomingCanonChain(ref data) => {
|
|
let addresses = data.enacted.iter()
|
|
.flat_map(|hash| {
|
|
let body = self.block_body(hash).expect("Enacted block must be in database.");
|
|
let hashes = body.transaction_hashes();
|
|
hashes.into_iter()
|
|
.enumerate()
|
|
.map(|(i, tx_hash)| (tx_hash, Some(TransactionAddress {
|
|
block_hash: hash.clone(),
|
|
index: i,
|
|
})))
|
|
.collect::<HashMap<H256, Option<TransactionAddress>>>()
|
|
});
|
|
|
|
let current_addresses = transaction_hashes.into_iter()
|
|
.enumerate()
|
|
.map(|(i ,tx_hash)| {
|
|
(tx_hash, Some(TransactionAddress {
|
|
block_hash: info.hash.clone(),
|
|
index: i
|
|
}))
|
|
});
|
|
|
|
let retracted = data.retracted.iter().flat_map(|hash| {
|
|
let body = self.block_body(hash).expect("Retracted block must be in database.");
|
|
let hashes = body.transaction_hashes();
|
|
hashes.into_iter().map(|hash| (hash, None)).collect::<HashMap<H256, Option<TransactionAddress>>>()
|
|
});
|
|
|
|
// The order here is important! Don't remove transaction if it was part of enacted blocks as well.
|
|
retracted.chain(addresses).chain(current_addresses).collect()
|
|
},
|
|
BlockLocation::Branch => HashMap::new(),
|
|
}
|
|
}
|
|
|
|
/// This functions returns modified blocks blooms.
|
|
///
|
|
/// To accelerate blooms lookups, blomms are stored in multiple
|
|
/// layers (BLOOM_LEVELS, currently 3).
|
|
/// ChainFilter is responsible for building and rebuilding these layers.
|
|
/// It returns them in HashMap, where values are Blooms and
|
|
/// keys are BloomIndexes. BloomIndex represents bloom location on one
|
|
/// of these layers.
|
|
///
|
|
/// To reduce number of queries to databse, block blooms are stored
|
|
/// in BlocksBlooms structure which contains info about several
|
|
/// (BLOOM_INDEX_SIZE, currently 16) consecutive blocks blooms.
|
|
///
|
|
/// Later, BloomIndexer is used to map bloom location on filter layer (BloomIndex)
|
|
/// to bloom location in database (BlocksBloomLocation).
|
|
///
|
|
fn prepare_block_blooms_update(&self, block_bytes: &[u8], info: &BlockInfo) -> HashMap<LogGroupPosition, BloomGroup> {
|
|
let block = BlockView::new(block_bytes);
|
|
let header = block.header_view();
|
|
|
|
let log_blooms = match info.location {
|
|
BlockLocation::Branch => HashMap::new(),
|
|
BlockLocation::CanonChain => {
|
|
let log_bloom = header.log_bloom();
|
|
if log_bloom.is_zero() {
|
|
HashMap::new()
|
|
} else {
|
|
let chain = bc::group::BloomGroupChain::new(self.blooms_config, self);
|
|
chain.insert(info.number as bc::Number, Bloom::from(log_bloom).into())
|
|
}
|
|
},
|
|
BlockLocation::BranchBecomingCanonChain(ref data) => {
|
|
let ancestor_number = self.block_number(&data.ancestor).unwrap();
|
|
let start_number = ancestor_number + 1;
|
|
let range = start_number as bc::Number..self.best_block_number() as bc::Number;
|
|
|
|
let mut blooms: Vec<bc::Bloom> = data.enacted.iter()
|
|
.map(|hash| self.block_header_data(hash).unwrap())
|
|
.map(|h| h.log_bloom())
|
|
.map(Bloom::from)
|
|
.map(Into::into)
|
|
.collect();
|
|
|
|
blooms.push(Bloom::from(header.log_bloom()).into());
|
|
|
|
let chain = bc::group::BloomGroupChain::new(self.blooms_config, self);
|
|
chain.replace(&range, blooms)
|
|
}
|
|
};
|
|
|
|
log_blooms.into_iter()
|
|
.map(|p| (From::from(p.0), From::from(p.1)))
|
|
.collect()
|
|
}
|
|
|
|
/// Get best block hash.
|
|
pub fn best_block_hash(&self) -> H256 {
|
|
self.best_block.read().hash.clone()
|
|
}
|
|
|
|
/// Get best block number.
|
|
pub fn best_block_number(&self) -> BlockNumber {
|
|
self.best_block.read().number
|
|
}
|
|
|
|
/// Get best block timestamp.
|
|
pub fn best_block_timestamp(&self) -> u64 {
|
|
self.best_block.read().timestamp
|
|
}
|
|
|
|
/// Get best block total difficulty.
|
|
pub fn best_block_total_difficulty(&self) -> U256 {
|
|
self.best_block.read().total_difficulty
|
|
}
|
|
|
|
/// Get best block header
|
|
pub fn best_block_header(&self) -> encoded::Header {
|
|
let block = self.best_block.read();
|
|
let raw = BlockView::new(&block.block).header_view().rlp().as_raw().to_vec();
|
|
encoded::Header::new(raw)
|
|
}
|
|
|
|
/// Get current cache size.
|
|
pub fn cache_size(&self) -> CacheSize {
|
|
CacheSize {
|
|
blocks: self.block_headers.read().heap_size_of_children() + self.block_bodies.read().heap_size_of_children(),
|
|
block_details: self.block_details.read().heap_size_of_children(),
|
|
transaction_addresses: self.transaction_addresses.read().heap_size_of_children(),
|
|
blocks_blooms: self.blocks_blooms.read().heap_size_of_children(),
|
|
block_receipts: self.block_receipts.read().heap_size_of_children(),
|
|
}
|
|
}
|
|
|
|
/// Ticks our cache system and throws out any old data.
|
|
pub fn collect_garbage(&self) {
|
|
let current_size = self.cache_size().total();
|
|
|
|
let mut block_headers = self.block_headers.write();
|
|
let mut block_bodies = self.block_bodies.write();
|
|
let mut block_details = self.block_details.write();
|
|
let mut block_hashes = self.block_hashes.write();
|
|
let mut transaction_addresses = self.transaction_addresses.write();
|
|
let mut blocks_blooms = self.blocks_blooms.write();
|
|
let mut block_receipts = self.block_receipts.write();
|
|
|
|
let mut cache_man = self.cache_man.lock();
|
|
cache_man.collect_garbage(current_size, | ids | {
|
|
for id in &ids {
|
|
match *id {
|
|
CacheId::BlockHeader(ref h) => { block_headers.remove(h); },
|
|
CacheId::BlockBody(ref h) => { block_bodies.remove(h); },
|
|
CacheId::BlockDetails(ref h) => { block_details.remove(h); }
|
|
CacheId::BlockHashes(ref h) => { block_hashes.remove(h); }
|
|
CacheId::TransactionAddresses(ref h) => { transaction_addresses.remove(h); }
|
|
CacheId::BlocksBlooms(ref h) => { blocks_blooms.remove(h); }
|
|
CacheId::BlockReceipts(ref h) => { block_receipts.remove(h); }
|
|
}
|
|
}
|
|
|
|
block_headers.shrink_to_fit();
|
|
block_bodies.shrink_to_fit();
|
|
block_details.shrink_to_fit();
|
|
block_hashes.shrink_to_fit();
|
|
transaction_addresses.shrink_to_fit();
|
|
blocks_blooms.shrink_to_fit();
|
|
block_receipts.shrink_to_fit();
|
|
|
|
block_headers.heap_size_of_children() +
|
|
block_bodies.heap_size_of_children() +
|
|
block_details.heap_size_of_children() +
|
|
block_hashes.heap_size_of_children() +
|
|
transaction_addresses.heap_size_of_children() +
|
|
blocks_blooms.heap_size_of_children() +
|
|
block_receipts.heap_size_of_children()
|
|
});
|
|
}
|
|
|
|
/// Create a block body from a block.
|
|
pub fn block_to_body(block: &[u8]) -> Bytes {
|
|
let mut body = RlpStream::new_list(2);
|
|
let block_rlp = Rlp::new(block);
|
|
body.append_raw(block_rlp.at(1).as_raw(), 1);
|
|
body.append_raw(block_rlp.at(2).as_raw(), 1);
|
|
body.out()
|
|
}
|
|
|
|
/// Returns general blockchain information
|
|
pub fn chain_info(&self) -> BlockChainInfo {
|
|
// ensure data consistencly by locking everything first
|
|
let best_block = self.best_block.read();
|
|
let best_ancient_block = self.best_ancient_block.read();
|
|
BlockChainInfo {
|
|
total_difficulty: best_block.total_difficulty.clone(),
|
|
pending_total_difficulty: best_block.total_difficulty.clone(),
|
|
genesis_hash: self.genesis_hash(),
|
|
best_block_hash: best_block.hash.clone(),
|
|
best_block_number: best_block.number,
|
|
best_block_timestamp: best_block.timestamp,
|
|
first_block_hash: self.first_block(),
|
|
first_block_number: From::from(self.first_block_number()),
|
|
ancient_block_hash: best_ancient_block.as_ref().map(|b| b.hash.clone()),
|
|
ancient_block_number: best_ancient_block.as_ref().map(|b| b.number),
|
|
}
|
|
}
|
|
|
|
#[cfg(test)]
|
|
pub fn db(&self) -> &Arc<KeyValueDB> {
|
|
&self.db
|
|
}
|
|
}
|
|
|
|
#[cfg(test)]
|
|
mod tests {
|
|
#![cfg_attr(feature="dev", allow(similar_names))]
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use std::sync::Arc;
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use rustc_serialize::hex::FromHex;
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use util::kvdb::KeyValueDB;
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use util::hash::*;
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use util::sha3::Hashable;
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use receipt::Receipt;
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use blockchain::{BlockProvider, BlockChain, Config, ImportRoute};
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use tests::helpers::*;
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use blockchain::generator::{ChainGenerator, ChainIterator, BlockFinalizer};
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use blockchain::extras::TransactionAddress;
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use views::BlockView;
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use transaction::{Transaction, Action};
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use log_entry::{LogEntry, LocalizedLogEntry};
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use ethkey::Secret;
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use header::BlockNumber;
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fn new_db() -> Arc<KeyValueDB> {
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Arc::new(::util::kvdb::in_memory(::db::NUM_COLUMNS.unwrap_or(0)))
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}
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fn new_chain(genesis: &[u8], db: Arc<KeyValueDB>) -> BlockChain {
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BlockChain::new(Config::default(), genesis, db)
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}
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#[test]
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fn should_cache_best_block() {
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// given
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let mut canon_chain = ChainGenerator::default();
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let mut finalizer = BlockFinalizer::default();
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let genesis = canon_chain.generate(&mut finalizer).unwrap();
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let first = canon_chain.generate(&mut finalizer).unwrap();
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let db = new_db();
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let bc = new_chain(&genesis, db.clone());
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assert_eq!(bc.best_block_number(), 0);
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// when
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let mut batch = db.transaction();
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bc.insert_block(&mut batch, &first, vec![]);
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assert_eq!(bc.best_block_number(), 0);
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bc.commit();
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// NOTE no db.write here (we want to check if best block is cached)
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// then
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assert_eq!(bc.best_block_number(), 1);
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assert!(bc.block(&bc.best_block_hash()).is_some(), "Best block should be queryable even without DB write.");
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}
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#[test]
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fn basic_blockchain_insert() {
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let mut canon_chain = ChainGenerator::default();
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let mut finalizer = BlockFinalizer::default();
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let genesis = canon_chain.generate(&mut finalizer).unwrap();
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let first = canon_chain.generate(&mut finalizer).unwrap();
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let genesis_hash = BlockView::new(&genesis).header_view().sha3();
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let first_hash = BlockView::new(&first).header_view().sha3();
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let db = new_db();
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let bc = new_chain(&genesis, db.clone());
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assert_eq!(bc.genesis_hash(), genesis_hash.clone());
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assert_eq!(bc.best_block_hash(), genesis_hash.clone());
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assert_eq!(bc.block_hash(0), Some(genesis_hash.clone()));
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assert_eq!(bc.block_hash(1), None);
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assert_eq!(bc.block_details(&genesis_hash).unwrap().children, vec![]);
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let mut batch = db.transaction();
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bc.insert_block(&mut batch, &first, vec![]);
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db.write(batch).unwrap();
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bc.commit();
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assert_eq!(bc.block_hash(0), Some(genesis_hash.clone()));
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assert_eq!(bc.best_block_number(), 1);
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assert_eq!(bc.best_block_hash(), first_hash.clone());
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assert_eq!(bc.block_hash(1), Some(first_hash.clone()));
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assert_eq!(bc.block_details(&first_hash).unwrap().parent, genesis_hash.clone());
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assert_eq!(bc.block_details(&genesis_hash).unwrap().children, vec![first_hash.clone()]);
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assert_eq!(bc.block_hash(2), None);
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}
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#[test]
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fn check_ancestry_iter() {
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let mut canon_chain = ChainGenerator::default();
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let mut finalizer = BlockFinalizer::default();
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let genesis = canon_chain.generate(&mut finalizer).unwrap();
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let genesis_hash = BlockView::new(&genesis).header_view().sha3();
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let db = new_db();
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let bc = new_chain(&genesis, db.clone());
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let mut block_hashes = vec![genesis_hash.clone()];
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let mut batch = db.transaction();
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for _ in 0..10 {
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let block = canon_chain.generate(&mut finalizer).unwrap();
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block_hashes.push(BlockView::new(&block).header_view().sha3());
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bc.insert_block(&mut batch, &block, vec![]);
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bc.commit();
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}
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db.write(batch).unwrap();
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block_hashes.reverse();
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assert_eq!(bc.ancestry_iter(block_hashes[0].clone()).unwrap().collect::<Vec<_>>(), block_hashes)
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}
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#[test]
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#[cfg_attr(feature="dev", allow(cyclomatic_complexity))]
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fn test_find_uncles() {
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let mut canon_chain = ChainGenerator::default();
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let mut finalizer = BlockFinalizer::default();
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let genesis = canon_chain.generate(&mut finalizer).unwrap();
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let b1b = canon_chain.fork(1).generate(&mut finalizer.fork()).unwrap();
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let b1a = canon_chain.generate(&mut finalizer).unwrap();
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let b2b = canon_chain.fork(1).generate(&mut finalizer.fork()).unwrap();
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let b2a = canon_chain.generate(&mut finalizer).unwrap();
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let b3b = canon_chain.fork(1).generate(&mut finalizer.fork()).unwrap();
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let b3a = canon_chain.generate(&mut finalizer).unwrap();
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let b4b = canon_chain.fork(1).generate(&mut finalizer.fork()).unwrap();
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let b4a = canon_chain.generate(&mut finalizer).unwrap();
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let b5b = canon_chain.fork(1).generate(&mut finalizer.fork()).unwrap();
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let b5a = canon_chain.generate(&mut finalizer).unwrap();
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let db = new_db();
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let bc = new_chain(&genesis, db.clone());
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let mut batch =db.transaction();
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for b in &[&b1a, &b1b, &b2a, &b2b, &b3a, &b3b, &b4a, &b4b, &b5a, &b5b] {
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bc.insert_block(&mut batch, b, vec![]);
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bc.commit();
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}
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bc.insert_block(&mut batch, &b1b, vec![]);
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bc.insert_block(&mut batch, &b2a, vec![]);
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bc.insert_block(&mut batch, &b2b, vec![]);
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bc.insert_block(&mut batch, &b3a, vec![]);
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bc.insert_block(&mut batch, &b3b, vec![]);
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bc.insert_block(&mut batch, &b4a, vec![]);
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bc.insert_block(&mut batch, &b4b, vec![]);
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bc.insert_block(&mut batch, &b5a, vec![]);
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bc.insert_block(&mut batch, &b5b, vec![]);
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db.write(batch).unwrap();
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assert_eq!(
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[&b4b, &b3b, &b2b].iter().map(|b| BlockView::new(b).header()).collect::<Vec<_>>(),
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bc.find_uncle_headers(&BlockView::new(&b4a).header_view().sha3(), 3).unwrap()
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);
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// TODO: insert block that already includes one of them as an uncle to check it's not allowed.
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}
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fn secret() -> Secret {
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Secret::from_slice(&"".sha3()).unwrap()
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}
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#[test]
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fn test_fork_transaction_addresses() {
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let mut canon_chain = ChainGenerator::default();
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let mut finalizer = BlockFinalizer::default();
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let genesis = canon_chain.generate(&mut finalizer).unwrap();
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let mut fork_chain = canon_chain.fork(1);
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let mut fork_finalizer = finalizer.fork();
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let t1 = Transaction {
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nonce: 0.into(),
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gas_price: 0.into(),
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gas: 100_000.into(),
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action: Action::Create,
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value: 100.into(),
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data: "601080600c6000396000f3006000355415600957005b60203560003555".from_hex().unwrap(),
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}.sign(&secret(), None);
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let b1a = canon_chain
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.with_transaction(t1.clone())
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.generate(&mut finalizer).unwrap();
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// Empty block
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let b1b = fork_chain
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.generate(&mut fork_finalizer).unwrap();
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let b2 = fork_chain
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.generate(&mut fork_finalizer).unwrap();
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let b1a_hash = BlockView::new(&b1a).header_view().sha3();
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let b2_hash = BlockView::new(&b2).header_view().sha3();
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let t1_hash = t1.hash();
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let db = new_db();
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let bc = new_chain(&genesis, db.clone());
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let mut batch = db.transaction();
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let _ = bc.insert_block(&mut batch, &b1a, vec![]);
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bc.commit();
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let _ = bc.insert_block(&mut batch, &b1b, vec![]);
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bc.commit();
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db.write(batch).unwrap();
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assert_eq!(bc.best_block_hash(), b1a_hash);
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assert_eq!(bc.transaction_address(&t1_hash), Some(TransactionAddress {
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block_hash: b1a_hash.clone(),
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index: 0,
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}));
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// now let's make forked chain the canon chain
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let mut batch = db.transaction();
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let _ = bc.insert_block(&mut batch, &b2, vec![]);
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bc.commit();
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db.write(batch).unwrap();
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// Transaction should be retracted
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assert_eq!(bc.best_block_hash(), b2_hash);
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assert_eq!(bc.transaction_address(&t1_hash), None);
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}
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#[test]
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fn test_overwriting_transaction_addresses() {
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let mut canon_chain = ChainGenerator::default();
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let mut finalizer = BlockFinalizer::default();
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let genesis = canon_chain.generate(&mut finalizer).unwrap();
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let mut fork_chain = canon_chain.fork(1);
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let mut fork_finalizer = finalizer.fork();
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let t1 = Transaction {
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nonce: 0.into(),
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gas_price: 0.into(),
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gas: 100_000.into(),
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action: Action::Create,
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value: 100.into(),
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data: "601080600c6000396000f3006000355415600957005b60203560003555".from_hex().unwrap(),
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}.sign(&secret(), None);
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let t2 = Transaction {
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nonce: 1.into(),
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gas_price: 0.into(),
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gas: 100_000.into(),
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action: Action::Create,
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value: 100.into(),
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data: "601080600c6000396000f3006000355415600957005b60203560003555".from_hex().unwrap(),
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}.sign(&secret(), None);
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let t3 = Transaction {
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nonce: 2.into(),
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gas_price: 0.into(),
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gas: 100_000.into(),
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action: Action::Create,
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value: 100.into(),
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data: "601080600c6000396000f3006000355415600957005b60203560003555".from_hex().unwrap(),
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}.sign(&secret(), None);
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let b1a = canon_chain
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.with_transaction(t1.clone())
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.with_transaction(t2.clone())
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.generate(&mut finalizer).unwrap();
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// insert transactions in different order
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let b1b = fork_chain
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.with_transaction(t2.clone())
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.with_transaction(t1.clone())
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.generate(&mut fork_finalizer).unwrap();
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let b2 = fork_chain
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.with_transaction(t3.clone())
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.generate(&mut fork_finalizer).unwrap();
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let b1a_hash = BlockView::new(&b1a).header_view().sha3();
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let b1b_hash = BlockView::new(&b1b).header_view().sha3();
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let b2_hash = BlockView::new(&b2).header_view().sha3();
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let t1_hash = t1.hash();
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let t2_hash = t2.hash();
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let t3_hash = t3.hash();
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let db = new_db();
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let bc = new_chain(&genesis, db.clone());
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let mut batch = db.transaction();
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let _ = bc.insert_block(&mut batch, &b1a, vec![]);
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bc.commit();
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let _ = bc.insert_block(&mut batch, &b1b, vec![]);
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bc.commit();
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db.write(batch).unwrap();
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assert_eq!(bc.best_block_hash(), b1a_hash);
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assert_eq!(bc.transaction_address(&t1_hash), Some(TransactionAddress {
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block_hash: b1a_hash.clone(),
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index: 0,
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}));
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assert_eq!(bc.transaction_address(&t2_hash), Some(TransactionAddress {
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block_hash: b1a_hash.clone(),
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index: 1,
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}));
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// now let's make forked chain the canon chain
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let mut batch = db.transaction();
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let _ = bc.insert_block(&mut batch, &b2, vec![]);
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bc.commit();
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db.write(batch).unwrap();
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assert_eq!(bc.best_block_hash(), b2_hash);
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assert_eq!(bc.transaction_address(&t1_hash), Some(TransactionAddress {
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block_hash: b1b_hash.clone(),
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index: 1,
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}));
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assert_eq!(bc.transaction_address(&t2_hash), Some(TransactionAddress {
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block_hash: b1b_hash.clone(),
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index: 0,
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}));
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assert_eq!(bc.transaction_address(&t3_hash), Some(TransactionAddress {
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block_hash: b2_hash.clone(),
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index: 0,
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}));
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}
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#[test]
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#[cfg_attr(feature="dev", allow(cyclomatic_complexity))]
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fn test_small_fork() {
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let mut canon_chain = ChainGenerator::default();
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let mut finalizer = BlockFinalizer::default();
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let genesis = canon_chain.generate(&mut finalizer).unwrap();
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let b1 = canon_chain.generate(&mut finalizer).unwrap();
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let b2 = canon_chain.generate(&mut finalizer).unwrap();
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let b3b = canon_chain.fork(1).generate(&mut finalizer.fork()).unwrap();
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let b3a = canon_chain.generate(&mut finalizer).unwrap();
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let genesis_hash = BlockView::new(&genesis).header_view().sha3();
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let b1_hash= BlockView::new(&b1).header_view().sha3();
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let b2_hash= BlockView::new(&b2).header_view().sha3();
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let b3a_hash= BlockView::new(&b3a).header_view().sha3();
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let b3b_hash= BlockView::new(&b3b).header_view().sha3();
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// b3a is a part of canon chain, whereas b3b is part of sidechain
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let best_block_hash = b3a_hash.clone();
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let db = new_db();
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let bc = new_chain(&genesis, db.clone());
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let mut batch = db.transaction();
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let ir1 = bc.insert_block(&mut batch, &b1, vec![]);
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bc.commit();
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let ir2 = bc.insert_block(&mut batch, &b2, vec![]);
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bc.commit();
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let ir3b = bc.insert_block(&mut batch, &b3b, vec![]);
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bc.commit();
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db.write(batch).unwrap();
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assert_eq!(bc.block_hash(3).unwrap(), b3b_hash);
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let mut batch =db.transaction();
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let ir3a = bc.insert_block(&mut batch, &b3a, vec![]);
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bc.commit();
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db.write(batch).unwrap();
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assert_eq!(ir1, ImportRoute {
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enacted: vec![b1_hash],
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retracted: vec![],
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omitted: vec![],
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});
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assert_eq!(ir2, ImportRoute {
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enacted: vec![b2_hash],
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retracted: vec![],
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omitted: vec![],
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});
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assert_eq!(ir3b, ImportRoute {
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enacted: vec![b3b_hash],
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retracted: vec![],
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omitted: vec![],
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});
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assert_eq!(ir3a, ImportRoute {
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enacted: vec![b3a_hash],
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retracted: vec![b3b_hash],
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omitted: vec![],
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});
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assert_eq!(bc.best_block_hash(), best_block_hash);
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assert_eq!(bc.block_number(&genesis_hash).unwrap(), 0);
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assert_eq!(bc.block_number(&b1_hash).unwrap(), 1);
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assert_eq!(bc.block_number(&b2_hash).unwrap(), 2);
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assert_eq!(bc.block_number(&b3a_hash).unwrap(), 3);
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assert_eq!(bc.block_number(&b3b_hash).unwrap(), 3);
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assert_eq!(bc.block_hash(0).unwrap(), genesis_hash);
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assert_eq!(bc.block_hash(1).unwrap(), b1_hash);
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assert_eq!(bc.block_hash(2).unwrap(), b2_hash);
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assert_eq!(bc.block_hash(3).unwrap(), b3a_hash);
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// test trie route
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let r0_1 = bc.tree_route(genesis_hash.clone(), b1_hash.clone()).unwrap();
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assert_eq!(r0_1.ancestor, genesis_hash);
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assert_eq!(r0_1.blocks, [b1_hash.clone()]);
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assert_eq!(r0_1.index, 0);
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let r0_2 = bc.tree_route(genesis_hash.clone(), b2_hash.clone()).unwrap();
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assert_eq!(r0_2.ancestor, genesis_hash);
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assert_eq!(r0_2.blocks, [b1_hash.clone(), b2_hash.clone()]);
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assert_eq!(r0_2.index, 0);
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let r1_3a = bc.tree_route(b1_hash.clone(), b3a_hash.clone()).unwrap();
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assert_eq!(r1_3a.ancestor, b1_hash);
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assert_eq!(r1_3a.blocks, [b2_hash.clone(), b3a_hash.clone()]);
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assert_eq!(r1_3a.index, 0);
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let r1_3b = bc.tree_route(b1_hash.clone(), b3b_hash.clone()).unwrap();
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assert_eq!(r1_3b.ancestor, b1_hash);
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assert_eq!(r1_3b.blocks, [b2_hash.clone(), b3b_hash.clone()]);
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assert_eq!(r1_3b.index, 0);
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let r3a_3b = bc.tree_route(b3a_hash.clone(), b3b_hash.clone()).unwrap();
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assert_eq!(r3a_3b.ancestor, b2_hash);
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assert_eq!(r3a_3b.blocks, [b3a_hash.clone(), b3b_hash.clone()]);
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assert_eq!(r3a_3b.index, 1);
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let r1_0 = bc.tree_route(b1_hash.clone(), genesis_hash.clone()).unwrap();
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assert_eq!(r1_0.ancestor, genesis_hash);
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assert_eq!(r1_0.blocks, [b1_hash.clone()]);
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assert_eq!(r1_0.index, 1);
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let r2_0 = bc.tree_route(b2_hash.clone(), genesis_hash.clone()).unwrap();
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assert_eq!(r2_0.ancestor, genesis_hash);
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assert_eq!(r2_0.blocks, [b2_hash.clone(), b1_hash.clone()]);
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assert_eq!(r2_0.index, 2);
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|
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let r3a_1 = bc.tree_route(b3a_hash.clone(), b1_hash.clone()).unwrap();
|
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assert_eq!(r3a_1.ancestor, b1_hash);
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assert_eq!(r3a_1.blocks, [b3a_hash.clone(), b2_hash.clone()]);
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assert_eq!(r3a_1.index, 2);
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|
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let r3b_1 = bc.tree_route(b3b_hash.clone(), b1_hash.clone()).unwrap();
|
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assert_eq!(r3b_1.ancestor, b1_hash);
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assert_eq!(r3b_1.blocks, [b3b_hash.clone(), b2_hash.clone()]);
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assert_eq!(r3b_1.index, 2);
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|
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let r3b_3a = bc.tree_route(b3b_hash.clone(), b3a_hash.clone()).unwrap();
|
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assert_eq!(r3b_3a.ancestor, b2_hash);
|
|
assert_eq!(r3b_3a.blocks, [b3b_hash.clone(), b3a_hash.clone()]);
|
|
assert_eq!(r3b_3a.index, 1);
|
|
}
|
|
|
|
#[test]
|
|
fn test_reopen_blockchain_db() {
|
|
let mut canon_chain = ChainGenerator::default();
|
|
let mut finalizer = BlockFinalizer::default();
|
|
let genesis = canon_chain.generate(&mut finalizer).unwrap();
|
|
let first = canon_chain.generate(&mut finalizer).unwrap();
|
|
let genesis_hash = BlockView::new(&genesis).header_view().sha3();
|
|
let first_hash = BlockView::new(&first).header_view().sha3();
|
|
let db = new_db();
|
|
|
|
{
|
|
let bc = new_chain(&genesis, db.clone());
|
|
assert_eq!(bc.best_block_hash(), genesis_hash);
|
|
let mut batch =db.transaction();
|
|
bc.insert_block(&mut batch, &first, vec![]);
|
|
db.write(batch).unwrap();
|
|
bc.commit();
|
|
assert_eq!(bc.best_block_hash(), first_hash);
|
|
}
|
|
|
|
{
|
|
let bc = new_chain(&genesis, db.clone());
|
|
|
|
assert_eq!(bc.best_block_hash(), first_hash);
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn can_contain_arbitrary_block_sequence() {
|
|
let bc = generate_dummy_blockchain(50);
|
|
assert_eq!(bc.best_block_number(), 49);
|
|
}
|
|
|
|
#[test]
|
|
fn can_collect_garbage() {
|
|
let bc = generate_dummy_blockchain(3000);
|
|
|
|
assert_eq!(bc.best_block_number(), 2999);
|
|
let best_hash = bc.best_block_hash();
|
|
let mut block_header = bc.block_header(&best_hash);
|
|
|
|
while !block_header.is_none() {
|
|
block_header = bc.block_header(block_header.unwrap().parent_hash());
|
|
}
|
|
assert!(bc.cache_size().blocks > 1024 * 1024);
|
|
|
|
for _ in 0..2 {
|
|
bc.collect_garbage();
|
|
}
|
|
assert!(bc.cache_size().blocks < 1024 * 1024);
|
|
}
|
|
|
|
#[test]
|
|
fn can_contain_arbitrary_block_sequence_with_extra() {
|
|
let bc = generate_dummy_blockchain_with_extra(25);
|
|
assert_eq!(bc.best_block_number(), 24);
|
|
}
|
|
|
|
#[test]
|
|
fn can_contain_only_genesis_block() {
|
|
let bc = generate_dummy_empty_blockchain();
|
|
assert_eq!(bc.best_block_number(), 0);
|
|
}
|
|
|
|
#[test]
|
|
fn find_transaction_by_hash() {
|
|
let genesis = "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".from_hex().unwrap();
|
|
let b1 = "f904a8f901faa0ce1f26f798dd03c8782d63b3e42e79a64eaea5694ea686ac5d7ce3df5171d1aea01dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347948888f1f195afa192cfee860698584c030f4c9db1a0a65c2364cd0f1542d761823dc0109c6b072f14c20459598c5455c274601438f4a070616ebd7ad2ed6fb7860cf7e9df00163842351c38a87cac2c1cb193895035a2a05c5b4fc43c2d45787f54e1ae7d27afdb4ad16dfc567c5692070d5c4556e0b1d7b9010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000830200000183023ec683021536845685109780a029f07836e4e59229b3a065913afc27702642c683bba689910b2b2fd45db310d3888957e6d004a31802f902a7f85f800a8255f094aaaf5374fce5edbc8e2a8697c15331677e6ebf0b0a801ca0575da4e21b66fa764be5f74da9389e67693d066fb0d1312e19e17e501da00ecda06baf5a5327595f6619dfc2fcb3f2e6fb410b5810af3cb52d0e7508038e91a188f85f010a82520894bbbf5374fce5edbc8e2a8697c15331677e6ebf0b0a801ba04fa966bf34b93abc1bcd665554b7f316b50f928477b50be0f3285ead29d18c5ba017bba0eeec1625ab433746955e125d46d80b7fdc97386c51266f842d8e02192ef85f020a82520894bbbf5374fce5edbc8e2a8697c15331677e6ebf0b0a801ca004377418ae981cc32b1312b4a427a1d69a821b28db8584f5f2bd8c6d42458adaa053a1dba1af177fac92f3b6af0a9fa46a22adf56e686c93794b6a012bf254abf5f85f030a82520894bbbf5374fce5edbc8e2a8697c15331677e6ebf0b0a801ca04fe13febd28a05f4fcb2f451d7ddc2dda56486d9f8c79a62b0ba4da775122615a0651b2382dd402df9ebc27f8cb4b2e0f3cea68dda2dca0ee9603608f0b6f51668f85f040a82520894bbbf5374fce5edbc8e2a8697c15331677e6ebf0b0a801ba078e6a0ba086a08f8450e208a399bb2f2d2a0d984acd2517c7c7df66ccfab567da013254002cd45a97fac049ae00afbc43ed0d9961d0c56a3b2382c80ce41c198ddf85f050a82520894bbbf5374fce5edbc8e2a8697c15331677e6ebf0b0a801ba0a7174d8f43ea71c8e3ca9477691add8d80ac8e0ed89d8d8b572041eef81f4a54a0534ea2e28ec4da3b5b944b18c51ec84a5cf35f5b3343c5fb86521fd2d388f506f85f060a82520894bbbf5374fce5edbc8e2a8697c15331677e6ebf0b0a801ba034bd04065833536a10c77ee2a43a5371bc6d34837088b861dd9d4b7f44074b59a078807715786a13876d3455716a6b9cb2186b7a4887a5c31160fc877454958616c0".from_hex().unwrap();
|
|
let b1_hash: H256 = "f53f268d23a71e85c7d6d83a9504298712b84c1a2ba220441c86eeda0bf0b6e3".into();
|
|
|
|
let db = new_db();
|
|
let bc = new_chain(&genesis, db.clone());
|
|
let mut batch =db.transaction();
|
|
bc.insert_block(&mut batch, &b1, vec![]);
|
|
db.write(batch).unwrap();
|
|
bc.commit();
|
|
|
|
let transactions = bc.transactions(&b1_hash).unwrap();
|
|
assert_eq!(transactions.len(), 7);
|
|
for t in transactions {
|
|
assert_eq!(bc.transaction(&bc.transaction_address(&t.hash()).unwrap()).unwrap(), t);
|
|
}
|
|
}
|
|
|
|
fn insert_block(db: &Arc<KeyValueDB>, bc: &BlockChain, bytes: &[u8], receipts: Vec<Receipt>) -> ImportRoute {
|
|
let mut batch = db.transaction();
|
|
let res = bc.insert_block(&mut batch, bytes, receipts);
|
|
db.write(batch).unwrap();
|
|
bc.commit();
|
|
res
|
|
}
|
|
|
|
#[test]
|
|
fn test_logs() {
|
|
// given
|
|
let mut canon_chain = ChainGenerator::default();
|
|
let mut finalizer = BlockFinalizer::default();
|
|
let genesis = canon_chain.generate(&mut finalizer).unwrap();
|
|
// just insert dummy transaction so that #transactions=#receipts
|
|
let t1 = Transaction {
|
|
nonce: 0.into(),
|
|
gas_price: 0.into(),
|
|
gas: 100_000.into(),
|
|
action: Action::Create,
|
|
value: 101.into(),
|
|
data: "601080600c6000396000f3006000355415600957005b60203560003555".from_hex().unwrap(),
|
|
}.sign(&secret(), None);
|
|
let t2 = Transaction {
|
|
nonce: 0.into(),
|
|
gas_price: 0.into(),
|
|
gas: 100_000.into(),
|
|
action: Action::Create,
|
|
value: 102.into(),
|
|
data: "601080600c6000396000f3006000355415600957005b60203560003555".from_hex().unwrap(),
|
|
}.sign(&secret(), None);
|
|
let t3 = Transaction {
|
|
nonce: 0.into(),
|
|
gas_price: 0.into(),
|
|
gas: 100_000.into(),
|
|
action: Action::Create,
|
|
value: 103.into(),
|
|
data: "601080600c6000396000f3006000355415600957005b60203560003555".from_hex().unwrap(),
|
|
}.sign(&secret(), None);
|
|
let tx_hash1 = t1.hash();
|
|
let tx_hash2 = t2.hash();
|
|
let tx_hash3 = t3.hash();
|
|
let b1 = canon_chain.with_transaction(t1).with_transaction(t2).generate(&mut finalizer).unwrap();
|
|
let b2 = canon_chain.with_transaction(t3).generate(&mut finalizer).unwrap();
|
|
|
|
let db = new_db();
|
|
let bc = new_chain(&genesis, db.clone());
|
|
insert_block(&db, &bc, &b1, vec![Receipt {
|
|
state_root: Some(H256::default()),
|
|
gas_used: 10_000.into(),
|
|
log_bloom: Default::default(),
|
|
logs: vec![
|
|
LogEntry { address: Default::default(), topics: vec![], data: vec![1], },
|
|
LogEntry { address: Default::default(), topics: vec![], data: vec![2], },
|
|
],
|
|
},
|
|
Receipt {
|
|
state_root: Some(H256::default()),
|
|
gas_used: 10_000.into(),
|
|
log_bloom: Default::default(),
|
|
logs: vec![
|
|
LogEntry { address: Default::default(), topics: vec![], data: vec![3], },
|
|
],
|
|
}]);
|
|
insert_block(&db, &bc, &b2, vec![
|
|
Receipt {
|
|
state_root: Some(H256::default()),
|
|
gas_used: 10_000.into(),
|
|
log_bloom: Default::default(),
|
|
logs: vec![
|
|
LogEntry { address: Default::default(), topics: vec![], data: vec![4], },
|
|
],
|
|
}
|
|
]);
|
|
|
|
// when
|
|
let block1 = BlockView::new(&b1);
|
|
let block2 = BlockView::new(&b2);
|
|
let logs1 = bc.logs(vec![1, 2], |_| true, None);
|
|
let logs2 = bc.logs(vec![1, 2], |_| true, Some(1));
|
|
|
|
// then
|
|
assert_eq!(logs1, vec![
|
|
LocalizedLogEntry {
|
|
entry: LogEntry { address: Default::default(), topics: vec![], data: vec![1] },
|
|
block_hash: block1.hash(),
|
|
block_number: block1.header().number(),
|
|
transaction_hash: tx_hash1.clone(),
|
|
transaction_index: 0,
|
|
transaction_log_index: 0,
|
|
log_index: 0,
|
|
},
|
|
LocalizedLogEntry {
|
|
entry: LogEntry { address: Default::default(), topics: vec![], data: vec![2] },
|
|
block_hash: block1.hash(),
|
|
block_number: block1.header().number(),
|
|
transaction_hash: tx_hash1.clone(),
|
|
transaction_index: 0,
|
|
transaction_log_index: 1,
|
|
log_index: 1,
|
|
},
|
|
LocalizedLogEntry {
|
|
entry: LogEntry { address: Default::default(), topics: vec![], data: vec![3] },
|
|
block_hash: block1.hash(),
|
|
block_number: block1.header().number(),
|
|
transaction_hash: tx_hash2.clone(),
|
|
transaction_index: 1,
|
|
transaction_log_index: 0,
|
|
log_index: 2,
|
|
},
|
|
LocalizedLogEntry {
|
|
entry: LogEntry { address: Default::default(), topics: vec![], data: vec![4] },
|
|
block_hash: block2.hash(),
|
|
block_number: block2.header().number(),
|
|
transaction_hash: tx_hash3.clone(),
|
|
transaction_index: 0,
|
|
transaction_log_index: 0,
|
|
log_index: 0,
|
|
}
|
|
]);
|
|
assert_eq!(logs2, vec![
|
|
LocalizedLogEntry {
|
|
entry: LogEntry { address: Default::default(), topics: vec![], data: vec![4] },
|
|
block_hash: block2.hash(),
|
|
block_number: block2.header().number(),
|
|
transaction_hash: tx_hash3.clone(),
|
|
transaction_index: 0,
|
|
transaction_log_index: 0,
|
|
log_index: 0,
|
|
}
|
|
]);
|
|
}
|
|
|
|
#[test]
|
|
fn test_bloom_filter_simple() {
|
|
// TODO: From here
|
|
let bloom_b1: H2048 = "00000020000000000000000000000000000000000000000002000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000040000000000000010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000008000400000000000000000000002000".into();
|
|
|
|
let bloom_b2: H2048 = "00000000000000000000000000000000000000000000020000001000000000000000000000000000000000000000000000000000000000000000000000000000100000000000000000008000000000000000000000000000000000040000000000000000000000000000000000000000000000000000000000000000000000800000000000000000000000000000000000000000000000000000000000008000000000000000000000000000000000000000000000000000000000000000000000000000000000000002000000000000000000040000000000000000000000000000000000000000000000000000000000000000000000000000000000000000".into();
|
|
|
|
let bloom_ba: H2048 = "00000000000000000000000000000000000000000000020000000800000000000000000000000000000000000000000000000000000000000000000000000000100000000000000000008000000000000000000000000000000000040000000000000000000000000000000000000000000000000000000000000000000000800000000000000000000000000000000000000000000000000000000000008000000000000000000000000000000000000000000000000000000000000000000000000000000000000002000000000000000000040000000000000000000000000000000000000000000000000000000000000000000000000000000000000000".into();
|
|
|
|
let mut canon_chain = ChainGenerator::default();
|
|
let mut finalizer = BlockFinalizer::default();
|
|
let genesis = canon_chain.generate(&mut finalizer).unwrap();
|
|
let mut fork = canon_chain.fork(1);
|
|
let mut fork_finalizer = finalizer.fork();
|
|
let b1 = fork.with_bloom(bloom_b1.clone()).generate(&mut fork_finalizer).unwrap();
|
|
let b2 = fork.with_bloom(bloom_b2.clone()).generate(&mut fork_finalizer).unwrap();
|
|
let b3 = fork.with_bloom(bloom_ba.clone()).generate(&mut fork_finalizer).unwrap();
|
|
let b1a = canon_chain.with_bloom(bloom_ba.clone()).generate(&mut finalizer).unwrap();
|
|
let b2a = canon_chain.with_bloom(bloom_ba.clone()).generate(&mut finalizer).unwrap();
|
|
|
|
let db = new_db();
|
|
let bc = new_chain(&genesis, db.clone());
|
|
|
|
let blocks_b1 = bc.blocks_with_bloom(&bloom_b1, 0, 5);
|
|
let blocks_b2 = bc.blocks_with_bloom(&bloom_b2, 0, 5);
|
|
assert_eq!(blocks_b1, Vec::<BlockNumber>::new());
|
|
assert_eq!(blocks_b2, Vec::<BlockNumber>::new());
|
|
|
|
insert_block(&db, &bc, &b1, vec![]);
|
|
let blocks_b1 = bc.blocks_with_bloom(&bloom_b1, 0, 5);
|
|
let blocks_b2 = bc.blocks_with_bloom(&bloom_b2, 0, 5);
|
|
assert_eq!(blocks_b1, vec![1]);
|
|
assert_eq!(blocks_b2, Vec::<BlockNumber>::new());
|
|
|
|
insert_block(&db, &bc, &b2, vec![]);
|
|
let blocks_b1 = bc.blocks_with_bloom(&bloom_b1, 0, 5);
|
|
let blocks_b2 = bc.blocks_with_bloom(&bloom_b2, 0, 5);
|
|
assert_eq!(blocks_b1, vec![1]);
|
|
assert_eq!(blocks_b2, vec![2]);
|
|
|
|
// hasn't been forked yet
|
|
insert_block(&db, &bc, &b1a, vec![]);
|
|
let blocks_b1 = bc.blocks_with_bloom(&bloom_b1, 0, 5);
|
|
let blocks_b2 = bc.blocks_with_bloom(&bloom_b2, 0, 5);
|
|
let blocks_ba = bc.blocks_with_bloom(&bloom_ba, 0, 5);
|
|
assert_eq!(blocks_b1, vec![1]);
|
|
assert_eq!(blocks_b2, vec![2]);
|
|
assert_eq!(blocks_ba, Vec::<BlockNumber>::new());
|
|
|
|
// fork has happend
|
|
insert_block(&db, &bc, &b2a, vec![]);
|
|
let blocks_b1 = bc.blocks_with_bloom(&bloom_b1, 0, 5);
|
|
let blocks_b2 = bc.blocks_with_bloom(&bloom_b2, 0, 5);
|
|
let blocks_ba = bc.blocks_with_bloom(&bloom_ba, 0, 5);
|
|
assert_eq!(blocks_b1, Vec::<BlockNumber>::new());
|
|
assert_eq!(blocks_b2, Vec::<BlockNumber>::new());
|
|
assert_eq!(blocks_ba, vec![1, 2]);
|
|
|
|
// fork back
|
|
insert_block(&db, &bc, &b3, vec![]);
|
|
let blocks_b1 = bc.blocks_with_bloom(&bloom_b1, 0, 5);
|
|
let blocks_b2 = bc.blocks_with_bloom(&bloom_b2, 0, 5);
|
|
let blocks_ba = bc.blocks_with_bloom(&bloom_ba, 0, 5);
|
|
assert_eq!(blocks_b1, vec![1]);
|
|
assert_eq!(blocks_b2, vec![2]);
|
|
assert_eq!(blocks_ba, vec![3]);
|
|
}
|
|
|
|
#[test]
|
|
fn test_best_block_update() {
|
|
let mut canon_chain = ChainGenerator::default();
|
|
let mut finalizer = BlockFinalizer::default();
|
|
let genesis = canon_chain.generate(&mut finalizer).unwrap();
|
|
|
|
let db = new_db();
|
|
{
|
|
let bc = new_chain(&genesis, db.clone());
|
|
let uncle = canon_chain.fork(1).generate(&mut finalizer.fork()).unwrap();
|
|
|
|
let mut batch = db.transaction();
|
|
// create a longer fork
|
|
for _ in 0..5 {
|
|
let canon_block = canon_chain.generate(&mut finalizer).unwrap();
|
|
bc.insert_block(&mut batch, &canon_block, vec![]);
|
|
bc.commit();
|
|
}
|
|
|
|
assert_eq!(bc.best_block_number(), 5);
|
|
bc.insert_block(&mut batch, &uncle, vec![]);
|
|
db.write(batch).unwrap();
|
|
bc.commit();
|
|
}
|
|
|
|
// re-loading the blockchain should load the correct best block.
|
|
let bc = new_chain(&genesis, db);
|
|
assert_eq!(bc.best_block_number(), 5);
|
|
}
|
|
|
|
#[test]
|
|
fn test_rewind() {
|
|
let mut canon_chain = ChainGenerator::default();
|
|
let mut finalizer = BlockFinalizer::default();
|
|
let genesis = canon_chain.generate(&mut finalizer).unwrap();
|
|
let first = canon_chain.generate(&mut finalizer).unwrap();
|
|
let second = canon_chain.generate(&mut finalizer).unwrap();
|
|
let genesis_hash = BlockView::new(&genesis).header_view().sha3();
|
|
let first_hash = BlockView::new(&first).header_view().sha3();
|
|
let second_hash = BlockView::new(&second).header_view().sha3();
|
|
|
|
let db = new_db();
|
|
let bc = new_chain(&genesis, db.clone());
|
|
|
|
let mut batch =db.transaction();
|
|
bc.insert_block(&mut batch, &first, vec![]);
|
|
bc.commit();
|
|
bc.insert_block(&mut batch, &second, vec![]);
|
|
bc.commit();
|
|
db.write(batch).unwrap();
|
|
|
|
assert_eq!(bc.rewind(), Some(first_hash.clone()));
|
|
assert!(!bc.is_known(&second_hash));
|
|
assert_eq!(bc.best_block_number(), 1);
|
|
assert_eq!(bc.best_block_hash(), first_hash.clone());
|
|
|
|
assert_eq!(bc.rewind(), Some(genesis_hash.clone()));
|
|
assert_eq!(bc.rewind(), None);
|
|
}
|
|
|
|
#[test]
|
|
fn epoch_transitions_iter() {
|
|
use blockchain::extras::EpochTransition;
|
|
|
|
let mut canon_chain = ChainGenerator::default();
|
|
let mut finalizer = BlockFinalizer::default();
|
|
let genesis = canon_chain.generate(&mut finalizer).unwrap();
|
|
|
|
let db = new_db();
|
|
{
|
|
let bc = new_chain(&genesis, db.clone());
|
|
let uncle = canon_chain.fork(1).generate(&mut finalizer.fork()).unwrap();
|
|
|
|
let mut batch = db.transaction();
|
|
// create a longer fork
|
|
for i in 0..5 {
|
|
let canon_block = canon_chain.generate(&mut finalizer).unwrap();
|
|
let hash = BlockView::new(&canon_block).header_view().sha3();
|
|
|
|
bc.insert_block(&mut batch, &canon_block, vec![]);
|
|
bc.insert_epoch_transition(&mut batch, i, EpochTransition {
|
|
block_hash: hash,
|
|
block_number: i + 1,
|
|
proof: vec![],
|
|
state_proof: vec![],
|
|
});
|
|
bc.commit();
|
|
}
|
|
|
|
assert_eq!(bc.best_block_number(), 5);
|
|
|
|
let hash = BlockView::new(&uncle).header_view().sha3();
|
|
bc.insert_block(&mut batch, &uncle, vec![]);
|
|
bc.insert_epoch_transition(&mut batch, 999, EpochTransition {
|
|
block_hash: hash,
|
|
block_number: 1,
|
|
proof: vec![],
|
|
state_proof: vec![]
|
|
});
|
|
|
|
db.write(batch).unwrap();
|
|
bc.commit();
|
|
|
|
// epoch 999 not in canonical chain.
|
|
assert_eq!(bc.epoch_transitions().map(|(i, _)| i).collect::<Vec<_>>(), vec![0, 1, 2, 3, 4]);
|
|
}
|
|
|
|
// re-loading the blockchain should load the correct best block.
|
|
let bc = new_chain(&genesis, db);
|
|
|
|
assert_eq!(bc.best_block_number(), 5);
|
|
assert_eq!(bc.epoch_transitions().map(|(i, _)| i).collect::<Vec<_>>(), vec![0, 1, 2, 3, 4]);
|
|
}
|
|
}
|