openethereum/ethcore/src/block.rs

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// Copyright 2015-2017 Parity Technologies (UK) Ltd.
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// This file is part of Parity.
// Parity is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// Parity is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with Parity. If not, see <http://www.gnu.org/licenses/>.
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//! Blockchain block.
use std::cmp;
use std::sync::Arc;
use std::collections::HashSet;
use rlp::{UntrustedRlp, RlpStream, Encodable, Decodable, DecoderError};
use util::{Bytes, Address, Hashable, U256, H256, ordered_trie_root, SHA3_NULL_RLP};
use util::error::{Mismatch, OutOfBounds};
use basic_types::{LogBloom, Seal};
use vm::{EnvInfo, LastHashes};
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use engines::Engine;
use error::{Error, BlockError, TransactionError};
use factory::Factories;
use header::Header;
use receipt::Receipt;
use state::State;
use state_db::StateDB;
use trace::FlatTrace;
use transaction::{UnverifiedTransaction, SignedTransaction};
use verification::PreverifiedBlock;
use views::BlockView;
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/// A block, encoded as it is on the block chain.
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#[derive(Default, Debug, Clone, PartialEq)]
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pub struct Block {
/// The header of this block.
pub header: Header,
/// The transactions in this block.
pub transactions: Vec<UnverifiedTransaction>,
/// The uncles of this block.
pub uncles: Vec<Header>,
}
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impl Block {
/// Returns true if the given bytes form a valid encoding of a block in RLP.
pub fn is_good(b: &[u8]) -> bool {
UntrustedRlp::new(b).as_val::<Block>().is_ok()
}
Snapshot creation and restoration (#1679) * to_rlp takes self by-reference * clean up some derefs * out-of-order insertion for blockchain * implement block rebuilder without verification * group block chunk header into struct * block rebuilder does verification * integrate snapshot service with client service; flesh out implementation more * initial implementation of snapshot service * remove snapshottaker trait * snapshot writer trait with packed and loose implementations * write chunks using "snapshotwriter" in service * have snapshot taking use snapshotwriter * implement snapshot readers * back up client dbs when replacing * use snapshot reader in snapshot service * describe offset format * use new get_db_path in parity, allow some errors in service * blockchain formatting * implement parity snapshot * implement snapshot restore * force blocks to be submitted in order * fix bug loading block hashes in packed reader * fix seal field loading * fix uncle hash computation * fix a few bugs * store genesis state in db. reverse block chunk order in packed writer * allow out-of-order import for blocks * bring restoration types together * only snapshot the last 30000 blocks * restore into overlaydb instead of journaldb * commit version to database * use memorydbs and commit directly * fix trie test compilation * fix failing tests * sha3_null_rlp, not H256::zero * move overlaydb to ref_overlaydb, add new overlaydb without on-disk rc * port archivedb to new overlaydb * add deletion mode tests for overlaydb * use new overlaydb, check state root at end * share chain info between state and block snapshotting * create blocks snapshot using blockchain directly * allow snapshot from arbitrary block, remove panickers from snapshot creation * begin test framework * blockchain chunking test * implement stateproducer::tick * state snapshot test * create block and state chunks concurrently, better restoration informant * fix tests * add deletion mode tests for overlaydb * address comments * more tests * Fix up tests. * remove a few printlns * add a little more documentation to `commit` * fix tests * fix ref_overlaydb test names * snapshot command skeleton * revert ref_overlaydb renaming * reimplement snapshot commands * fix many errors * everything but inject * get ethcore compiling * get snapshot tests passing again * instrument snapshot commands again * fix fallout from other changes, mark snapshots as experimental * optimize injection patterns * do two injections * fix up tests * take snapshots from 1000 blocks efore * address minor comments * fix a few io crate related errors * clarify names about total difficulty [ci skip]
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/// Get the RLP-encoding of the block with or without the seal.
pub fn rlp_bytes(&self, seal: Seal) -> Bytes {
let mut block_rlp = RlpStream::new_list(3);
self.header.stream_rlp(&mut block_rlp, seal);
block_rlp.append_list(&self.transactions);
block_rlp.append_list(&self.uncles);
block_rlp.out()
}
}
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impl Decodable for Block {
fn decode(rlp: &UntrustedRlp) -> Result<Self, DecoderError> {
if rlp.as_raw().len() != rlp.payload_info()?.total() {
return Err(DecoderError::RlpIsTooBig);
}
if rlp.item_count()? != 3 {
return Err(DecoderError::RlpIncorrectListLen);
}
Ok(Block {
header: rlp.val_at(0)?,
transactions: rlp.list_at(1)?,
uncles: rlp.list_at(2)?,
})
}
}
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/// An internal type for a block's common elements.
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#[derive(Clone)]
pub struct ExecutedBlock {
header: Header,
transactions: Vec<SignedTransaction>,
uncles: Vec<Header>,
receipts: Vec<Receipt>,
transactions_set: HashSet<H256>,
state: State<StateDB>,
traces: Option<Vec<Vec<FlatTrace>>>,
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}
/// A set of references to `ExecutedBlock` fields that are publicly accessible.
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pub struct BlockRefMut<'a> {
/// Block header.
pub header: &'a mut Header,
/// Block transactions.
pub transactions: &'a [SignedTransaction],
/// Block uncles.
pub uncles: &'a [Header],
/// Transaction receipts.
pub receipts: &'a [Receipt],
/// State.
pub state: &'a mut State<StateDB>,
/// Traces.
pub traces: &'a Option<Vec<Vec<FlatTrace>>>,
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}
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/// A set of immutable references to `ExecutedBlock` fields that are publicly accessible.
pub struct BlockRef<'a> {
/// Block header.
pub header: &'a Header,
/// Block transactions.
pub transactions: &'a [SignedTransaction],
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/// Block uncles.
pub uncles: &'a [Header],
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/// Transaction receipts.
pub receipts: &'a [Receipt],
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/// State.
pub state: &'a State<StateDB>,
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/// Traces.
pub traces: &'a Option<Vec<Vec<FlatTrace>>>,
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}
impl ExecutedBlock {
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/// Create a new block from the given `state`.
fn new(state: State<StateDB>, tracing: bool) -> ExecutedBlock {
ExecutedBlock {
header: Default::default(),
transactions: Default::default(),
uncles: Default::default(),
receipts: Default::default(),
transactions_set: Default::default(),
state: state,
traces: if tracing {Some(Vec::new())} else {None},
}
}
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/// Get a structure containing individual references to all public fields.
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pub fn fields_mut(&mut self) -> BlockRefMut {
BlockRefMut {
header: &mut self.header,
transactions: &self.transactions,
uncles: &self.uncles,
state: &mut self.state,
receipts: &self.receipts,
traces: &self.traces,
}
}
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/// Get a structure containing individual references to all public fields.
pub fn fields(&self) -> BlockRef {
BlockRef {
header: &self.header,
transactions: &self.transactions,
uncles: &self.uncles,
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state: &self.state,
receipts: &self.receipts,
traces: &self.traces,
}
}
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}
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/// Trait for a object that is a `ExecutedBlock`.
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pub trait IsBlock {
/// Get the `ExecutedBlock` associated with this object.
fn block(&self) -> &ExecutedBlock;
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/// Get the base `Block` object associated with this.
fn to_base(&self) -> Block {
Block {
header: self.header().clone(),
transactions: self.transactions().iter().cloned().map(Into::into).collect(),
uncles: self.uncles().to_vec(),
}
}
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/// Get the header associated with this object's block.
fn header(&self) -> &Header { &self.block().header }
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/// Get the final state associated with this object's block.
fn state(&self) -> &State<StateDB> { &self.block().state }
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/// Get all information on transactions in this block.
fn transactions(&self) -> &[SignedTransaction] { &self.block().transactions }
/// Get all information on receipts in this block.
fn receipts(&self) -> &[Receipt] { &self.block().receipts }
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/// Get all information concerning transaction tracing in this block.
fn traces(&self) -> &Option<Vec<Vec<FlatTrace>>> { &self.block().traces }
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/// Get all uncles in this block.
fn uncles(&self) -> &[Header] { &self.block().uncles }
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}
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/// Trait for a object that has a state database.
pub trait Drain {
/// Drop this object and return the underlying database.
fn drain(self) -> StateDB;
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}
impl IsBlock for ExecutedBlock {
fn block(&self) -> &ExecutedBlock { self }
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}
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/// Block that is ready for transactions to be added.
///
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/// It's a bit like a Vec<Transaction>, except that whenever a transaction is pushed, we execute it and
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/// maintain the system `state()`. We also archive execution receipts in preparation for later block creation.
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pub struct OpenBlock<'x> {
block: ExecutedBlock,
engine: &'x Engine,
last_hashes: Arc<LastHashes>,
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}
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/// Just like `OpenBlock`, except that we've applied `Engine::on_close_block`, finished up the non-seal header fields,
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/// and collected the uncles.
///
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/// There is no function available to push a transaction.
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#[derive(Clone)]
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pub struct ClosedBlock {
block: ExecutedBlock,
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uncle_bytes: Bytes,
last_hashes: Arc<LastHashes>,
unclosed_state: State<StateDB>,
}
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/// Just like `ClosedBlock` except that we can't reopen it and it's faster.
///
/// We actually store the post-`Engine::on_close_block` state, unlike in `ClosedBlock` where it's the pre.
#[derive(Clone)]
pub struct LockedBlock {
block: ExecutedBlock,
uncle_bytes: Bytes,
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}
/// A block that has a valid seal.
///
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/// The block's header has valid seal arguments. The block cannot be reversed into a `ClosedBlock` or `OpenBlock`.
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pub struct SealedBlock {
block: ExecutedBlock,
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uncle_bytes: Bytes,
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}
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impl<'x> OpenBlock<'x> {
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#[cfg_attr(feature="dev", allow(too_many_arguments))]
/// Create a new `OpenBlock` ready for transaction pushing.
pub fn new(
engine: &'x Engine,
factories: Factories,
tracing: bool,
db: StateDB,
parent: &Header,
last_hashes: Arc<LastHashes>,
author: Address,
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gas_range_target: (U256, U256),
extra_data: Bytes,
is_epoch_begin: bool,
) -> Result<Self, Error> {
let number = parent.number() + 1;
let state = State::from_existing(db, parent.state_root().clone(), engine.account_start_nonce(number), factories)?;
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let mut r = OpenBlock {
block: ExecutedBlock::new(state, tracing),
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engine: engine,
last_hashes: last_hashes.clone(),
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};
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r.block.header.set_parent_hash(parent.hash());
r.block.header.set_number(number);
r.block.header.set_author(author);
r.block.header.set_timestamp_now(parent.timestamp());
r.block.header.set_extra_data(extra_data);
r.block.header.note_dirty();
let gas_floor_target = cmp::max(gas_range_target.0, engine.params().min_gas_limit);
let gas_ceil_target = cmp::max(gas_range_target.1, gas_floor_target);
engine.populate_from_parent(&mut r.block.header, parent, gas_floor_target, gas_ceil_target);
engine.on_new_block(&mut r.block, last_hashes, is_epoch_begin)?;
Ok(r)
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}
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/// Alter the author for the block.
pub fn set_author(&mut self, author: Address) { self.block.header.set_author(author); }
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/// Alter the timestamp of the block.
pub fn set_timestamp(&mut self, timestamp: u64) { self.block.header.set_timestamp(timestamp); }
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/// Alter the difficulty for the block.
pub fn set_difficulty(&mut self, a: U256) { self.block.header.set_difficulty(a); }
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/// Alter the gas limit for the block.
pub fn set_gas_limit(&mut self, a: U256) { self.block.header.set_gas_limit(a); }
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/// Alter the gas limit for the block.
pub fn set_gas_used(&mut self, a: U256) { self.block.header.set_gas_used(a); }
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/// Alter the uncles hash the block.
pub fn set_uncles_hash(&mut self, h: H256) { self.block.header.set_uncles_hash(h); }
/// Alter transactions root for the block.
pub fn set_transactions_root(&mut self, h: H256) { self.block.header.set_transactions_root(h); }
/// Alter the receipts root for the block.
pub fn set_receipts_root(&mut self, h: H256) { self.block.header.set_receipts_root(h); }
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/// Alter the extra_data for the block.
pub fn set_extra_data(&mut self, extra_data: Bytes) -> Result<(), BlockError> {
if extra_data.len() > self.engine.maximum_extra_data_size() {
Err(BlockError::ExtraDataOutOfBounds(OutOfBounds{min: None, max: Some(self.engine.maximum_extra_data_size()), found: extra_data.len()}))
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} else {
self.block.header.set_extra_data(extra_data);
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Ok(())
}
}
/// Add an uncle to the block, if possible.
///
/// NOTE Will check chain constraints and the uncle number but will NOT check
/// that the header itself is actually valid.
pub fn push_uncle(&mut self, valid_uncle_header: Header) -> Result<(), BlockError> {
if self.block.uncles.len() + 1 > self.engine.maximum_uncle_count() {
return Err(BlockError::TooManyUncles(OutOfBounds{min: None, max: Some(self.engine.maximum_uncle_count()), found: self.block.uncles.len() + 1}));
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}
// TODO: check number
// TODO: check not a direct ancestor (use last_hashes for that)
self.block.uncles.push(valid_uncle_header);
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Ok(())
}
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/// Get the environment info concerning this block.
pub fn env_info(&self) -> EnvInfo {
// TODO: memoise.
EnvInfo {
number: self.block.header.number(),
author: self.block.header.author().clone(),
timestamp: self.block.header.timestamp(),
difficulty: self.block.header.difficulty().clone(),
last_hashes: self.last_hashes.clone(),
gas_used: self.block.receipts.last().map_or(U256::zero(), |r| r.gas_used),
gas_limit: self.block.header.gas_limit().clone(),
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}
}
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/// Push a transaction into the block.
///
/// If valid, it will be executed, and archived together with the receipt.
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pub fn push_transaction(&mut self, t: SignedTransaction, h: Option<H256>) -> Result<&Receipt, Error> {
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if self.block.transactions_set.contains(&t.hash()) {
return Err(From::from(TransactionError::AlreadyImported));
}
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let env_info = self.env_info();
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// info!("env_info says gas_used={}", env_info.gas_used);
match self.block.state.apply(&env_info, self.engine, &t, self.block.traces.is_some()) {
Ok(outcome) => {
self.block.transactions_set.insert(h.unwrap_or_else(||t.hash()));
self.block.transactions.push(t.into());
let t = outcome.trace;
self.block.traces.as_mut().map(|traces| traces.push(t));
self.block.receipts.push(outcome.receipt);
Ok(self.block.receipts.last().expect("receipt just pushed; qed"))
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}
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Err(x) => Err(From::from(x))
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}
}
/// Push transactions onto the block.
pub fn push_transactions(&mut self, transactions: &[SignedTransaction]) -> Result<(), Error> {
push_transactions(self, transactions)
}
/// Populate self from a header.
pub fn populate_from(&mut self, header: &Header) {
self.set_difficulty(*header.difficulty());
self.set_gas_limit(*header.gas_limit());
self.set_timestamp(header.timestamp());
self.set_author(header.author().clone());
self.set_extra_data(header.extra_data().clone()).unwrap_or_else(|e| warn!("Couldn't set extradata: {}. Ignoring.", e));
self.set_uncles_hash(header.uncles_hash().clone());
self.set_transactions_root(header.transactions_root().clone());
}
/// Turn this into a `ClosedBlock`.
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pub fn close(self) -> ClosedBlock {
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let mut s = self;
let unclosed_state = s.block.state.clone();
if let Err(e) = s.engine.on_close_block(&mut s.block) {
warn!("Encountered error on closing the block: {}", e);
}
if let Err(e) = s.block.state.commit() {
warn!("Encountered error on state commit: {}", e);
}
s.block.header.set_transactions_root(ordered_trie_root(s.block.transactions.iter().map(|e| e.rlp_bytes().into_vec())));
let uncle_bytes = s.block.uncles.iter().fold(RlpStream::new_list(s.block.uncles.len()), |mut s, u| {s.append_raw(&u.rlp(Seal::With), 1); s} ).out();
s.block.header.set_uncles_hash(uncle_bytes.sha3());
s.block.header.set_state_root(s.block.state.root().clone());
s.block.header.set_receipts_root(ordered_trie_root(s.block.receipts.iter().map(|r| r.rlp_bytes().into_vec())));
s.block.header.set_log_bloom(s.block.receipts.iter().fold(LogBloom::zero(), |mut b, r| {b = &b | &r.log_bloom; b})); //TODO: use |= operator
s.block.header.set_gas_used(s.block.receipts.last().map_or(U256::zero(), |r| r.gas_used));
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ClosedBlock {
block: s.block,
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uncle_bytes: uncle_bytes,
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last_hashes: s.last_hashes,
unclosed_state: unclosed_state,
}
}
/// Turn this into a `LockedBlock`.
pub fn close_and_lock(self) -> LockedBlock {
let mut s = self;
if let Err(e) = s.engine.on_close_block(&mut s.block) {
warn!("Encountered error on closing the block: {}", e);
}
if let Err(e) = s.block.state.commit() {
warn!("Encountered error on state commit: {}", e);
}
if s.block.header.transactions_root().is_zero() || s.block.header.transactions_root() == &SHA3_NULL_RLP {
s.block.header.set_transactions_root(ordered_trie_root(s.block.transactions.iter().map(|e| e.rlp_bytes().into_vec())));
}
let uncle_bytes = s.block.uncles.iter().fold(RlpStream::new_list(s.block.uncles.len()), |mut s, u| {s.append_raw(&u.rlp(Seal::With), 1); s} ).out();
if s.block.header.uncles_hash().is_zero() {
s.block.header.set_uncles_hash(uncle_bytes.sha3());
}
if s.block.header.receipts_root().is_zero() || s.block.header.receipts_root() == &SHA3_NULL_RLP {
s.block.header.set_receipts_root(ordered_trie_root(s.block.receipts.iter().map(|r| r.rlp_bytes().into_vec())));
}
s.block.header.set_state_root(s.block.state.root().clone());
s.block.header.set_log_bloom(s.block.receipts.iter().fold(LogBloom::zero(), |mut b, r| {b = &b | &r.log_bloom; b})); //TODO: use |= operator
s.block.header.set_gas_used(s.block.receipts.last().map_or(U256::zero(), |r| r.gas_used));
LockedBlock {
block: s.block,
uncle_bytes: uncle_bytes,
}
}
#[cfg(test)]
/// Return mutable block reference. To be used in tests only.
pub fn block_mut(&mut self) -> &mut ExecutedBlock { &mut self.block }
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}
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impl<'x> IsBlock for OpenBlock<'x> {
fn block(&self) -> &ExecutedBlock { &self.block }
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}
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impl<'x> IsBlock for ClosedBlock {
fn block(&self) -> &ExecutedBlock { &self.block }
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}
impl<'x> IsBlock for LockedBlock {
fn block(&self) -> &ExecutedBlock { &self.block }
}
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impl ClosedBlock {
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/// Get the hash of the header without seal arguments.
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pub fn hash(&self) -> H256 { self.header().rlp_sha3(Seal::Without) }
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/// Turn this into a `LockedBlock`, unable to be reopened again.
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pub fn lock(self) -> LockedBlock {
LockedBlock {
block: self.block,
uncle_bytes: self.uncle_bytes,
}
}
/// Given an engine reference, reopen the `ClosedBlock` into an `OpenBlock`.
pub fn reopen(self, engine: &Engine) -> OpenBlock {
// revert rewards (i.e. set state back at last transaction's state).
let mut block = self.block;
block.state = self.unclosed_state;
OpenBlock {
block: block,
engine: engine,
last_hashes: self.last_hashes,
}
}
}
impl LockedBlock {
/// Get the hash of the header without seal arguments.
pub fn hash(&self) -> H256 { self.header().rlp_sha3(Seal::Without) }
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/// Provide a valid seal in order to turn this into a `SealedBlock`.
///
/// NOTE: This does not check the validity of `seal` with the engine.
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pub fn seal(self, engine: &Engine, seal: Vec<Bytes>) -> Result<SealedBlock, BlockError> {
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let mut s = self;
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if seal.len() != engine.seal_fields() {
return Err(BlockError::InvalidSealArity(Mismatch{expected: engine.seal_fields(), found: seal.len()}));
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}
s.block.header.set_seal(seal);
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Ok(SealedBlock { block: s.block, uncle_bytes: s.uncle_bytes })
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}
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/// Provide a valid seal in order to turn this into a `SealedBlock`.
/// This does check the validity of `seal` with the engine.
/// Returns the `ClosedBlock` back again if the seal is no good.
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pub fn try_seal(
self,
engine: &Engine,
seal: Vec<Bytes>,
) -> Result<SealedBlock, (Error, LockedBlock)> {
let mut s = self;
s.block.header.set_seal(seal);
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match engine.verify_block_seal(&s.block.header) {
Err(e) => Err((e, s)),
_ => Ok(SealedBlock { block: s.block, uncle_bytes: s.uncle_bytes }),
}
}
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/// Remove state root from transaction receipts to make them EIP-98 compatible.
pub fn strip_receipts(self) -> LockedBlock {
let mut block = self;
for receipt in &mut block.block.receipts {
receipt.state_root = None;
}
block.block.header.set_receipts_root(ordered_trie_root(block.block.receipts.iter().map(|r| r.rlp_bytes().into_vec())));
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block
}
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}
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impl Drain for LockedBlock {
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/// Drop this object and return the underlieing database.
fn drain(self) -> StateDB {
self.block.state.drop().1
}
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}
impl SealedBlock {
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/// Get the RLP-encoding of the block.
pub fn rlp_bytes(&self) -> Bytes {
let mut block_rlp = RlpStream::new_list(3);
self.block.header.stream_rlp(&mut block_rlp, Seal::With);
block_rlp.append_list(&self.block.transactions);
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block_rlp.append_raw(&self.uncle_bytes, 1);
block_rlp.out()
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}
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}
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impl Drain for SealedBlock {
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/// Drop this object and return the underlieing database.
fn drain(self) -> StateDB {
self.block.state.drop().1
}
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}
impl IsBlock for SealedBlock {
fn block(&self) -> &ExecutedBlock { &self.block }
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}
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/// Enact the block given by block header, transactions and uncles
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#[cfg_attr(feature="dev", allow(too_many_arguments))]
pub fn enact(
header: &Header,
transactions: &[SignedTransaction],
uncles: &[Header],
engine: &Engine,
tracing: bool,
db: StateDB,
parent: &Header,
last_hashes: Arc<LastHashes>,
factories: Factories,
is_epoch_begin: bool,
) -> Result<LockedBlock, Error> {
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{
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if ::log::max_log_level() >= ::log::LogLevel::Trace {
let s = State::from_existing(db.boxed_clone(), parent.state_root().clone(), engine.account_start_nonce(parent.number() + 1), factories.clone())?;
trace!(target: "enact", "num={}, root={}, author={}, author_balance={}\n",
header.number(), s.root(), header.author(), s.balance(&header.author())?);
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}
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}
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let mut b = OpenBlock::new(
engine,
factories,
tracing,
db,
parent,
last_hashes,
Address::new(),
(3141562.into(), 31415620.into()),
vec![],
is_epoch_begin,
)?;
b.populate_from(header);
b.push_transactions(transactions)?;
for u in uncles {
b.push_uncle(u.clone())?;
}
Ok(b.close_and_lock())
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}
#[inline]
#[cfg(not(feature = "slow-blocks"))]
fn push_transactions(block: &mut OpenBlock, transactions: &[SignedTransaction]) -> Result<(), Error> {
for t in transactions {
block.push_transaction(t.clone(), None)?;
}
Ok(())
}
#[cfg(feature = "slow-blocks")]
fn push_transactions(block: &mut OpenBlock, transactions: &[SignedTransaction]) -> Result<(), Error> {
use std::time;
let slow_tx = option_env!("SLOW_TX_DURATION").and_then(|v| v.parse().ok()).unwrap_or(100);
for t in transactions {
let hash = t.hash();
let start = time::Instant::now();
block.push_transaction(t.clone(), None)?;
let took = start.elapsed();
let took_ms = took.as_secs() * 1000 + took.subsec_nanos() as u64 / 1000000;
if took > time::Duration::from_millis(slow_tx) {
warn!("Heavy ({} ms) transaction in block {:?}: {:?}", took_ms, block.header().number(), hash);
}
debug!(target: "tx", "Transaction {:?} took: {} ms", hash, took_ms);
}
Ok(())
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}
// TODO [ToDr] Pass `PreverifiedBlock` by move, this will avoid unecessary allocation
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/// Enact the block given by `block_bytes` using `engine` on the database `db` with given `parent` block header
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#[cfg_attr(feature="dev", allow(too_many_arguments))]
pub fn enact_verified(
block: &PreverifiedBlock,
engine: &Engine,
tracing: bool,
db: StateDB,
parent: &Header,
last_hashes: Arc<LastHashes>,
factories: Factories,
is_epoch_begin: bool,
) -> Result<LockedBlock, Error> {
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let view = BlockView::new(&block.bytes);
enact(
&block.header,
&block.transactions,
&view.uncles(),
engine,
tracing,
db,
parent,
last_hashes,
factories,
is_epoch_begin,
)
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}
#[cfg(test)]
mod tests {
use tests::helpers::*;
use super::*;
use engines::Engine;
use vm::LastHashes;
use error::Error;
use header::Header;
use factory::Factories;
use state_db::StateDB;
use views::BlockView;
use util::Address;
use std::sync::Arc;
use transaction::SignedTransaction;
/// Enact the block given by `block_bytes` using `engine` on the database `db` with given `parent` block header
#[cfg_attr(feature="dev", allow(too_many_arguments))]
fn enact_bytes(
block_bytes: &[u8],
engine: &Engine,
tracing: bool,
db: StateDB,
parent: &Header,
last_hashes: Arc<LastHashes>,
factories: Factories,
) -> Result<LockedBlock, Error> {
let block = BlockView::new(block_bytes);
let header = block.header();
let transactions: Result<Vec<_>, Error> = block.transactions().into_iter().map(SignedTransaction::new).collect();
let transactions = transactions?;
{
if ::log::max_log_level() >= ::log::LogLevel::Trace {
let s = State::from_existing(db.boxed_clone(), parent.state_root().clone(), engine.account_start_nonce(parent.number() + 1), factories.clone())?;
trace!(target: "enact", "num={}, root={}, author={}, author_balance={}\n",
header.number(), s.root(), header.author(), s.balance(&header.author())?);
}
}
let mut b = OpenBlock::new(
engine,
factories,
tracing,
db,
parent,
last_hashes,
Address::new(),
(3141562.into(), 31415620.into()),
vec![],
false,
)?;
b.populate_from(&header);
b.push_transactions(&transactions)?;
for u in &block.uncles() {
b.push_uncle(u.clone())?;
}
Ok(b.close_and_lock())
}
/// Enact the block given by `block_bytes` using `engine` on the database `db` with given `parent` block header. Seal the block aferwards
#[cfg_attr(feature="dev", allow(too_many_arguments))]
fn enact_and_seal(
block_bytes: &[u8],
engine: &Engine,
tracing: bool,
db: StateDB,
parent: &Header,
last_hashes: Arc<LastHashes>,
factories: Factories,
) -> Result<SealedBlock, Error> {
let header = BlockView::new(block_bytes).header_view();
Ok(enact_bytes(block_bytes, engine, tracing, db, parent, last_hashes, factories)?.seal(engine, header.seal())?)
}
#[test]
fn open_block() {
use spec::*;
let spec = Spec::new_test();
let genesis_header = spec.genesis_header();
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let db = spec.ensure_db_good(get_temp_state_db(), &Default::default()).unwrap();
let last_hashes = Arc::new(vec![genesis_header.hash()]);
let b = OpenBlock::new(&*spec.engine, Default::default(), false, db, &genesis_header, last_hashes, Address::zero(), (3141562.into(), 31415620.into()), vec![], false).unwrap();
let b = b.close_and_lock();
let _ = b.seal(&*spec.engine, vec![]);
}
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#[test]
fn enact_block() {
use spec::*;
let spec = Spec::new_test();
let engine = &*spec.engine;
let genesis_header = spec.genesis_header();
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let db = spec.ensure_db_good(get_temp_state_db(), &Default::default()).unwrap();
let last_hashes = Arc::new(vec![genesis_header.hash()]);
let b = OpenBlock::new(engine, Default::default(), false, db, &genesis_header, last_hashes.clone(), Address::zero(), (3141562.into(), 31415620.into()), vec![], false).unwrap()
.close_and_lock().seal(engine, vec![]).unwrap();
let orig_bytes = b.rlp_bytes();
let orig_db = b.drain();
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let db = spec.ensure_db_good(get_temp_state_db(), &Default::default()).unwrap();
let e = enact_and_seal(&orig_bytes, engine, false, db, &genesis_header, last_hashes, Default::default()).unwrap();
assert_eq!(e.rlp_bytes(), orig_bytes);
let db = e.drain();
assert_eq!(orig_db.journal_db().keys(), db.journal_db().keys());
assert!(orig_db.journal_db().keys().iter().filter(|k| orig_db.journal_db().get(k.0) != db.journal_db().get(k.0)).next() == None);
}
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#[test]
fn enact_block_with_uncle() {
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use spec::*;
let spec = Spec::new_test();
let engine = &*spec.engine;
let genesis_header = spec.genesis_header();
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let db = spec.ensure_db_good(get_temp_state_db(), &Default::default()).unwrap();
let last_hashes = Arc::new(vec![genesis_header.hash()]);
let mut open_block = OpenBlock::new(engine, Default::default(), false, db, &genesis_header, last_hashes.clone(), Address::zero(), (3141562.into(), 31415620.into()), vec![], false).unwrap();
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let mut uncle1_header = Header::new();
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uncle1_header.set_extra_data(b"uncle1".to_vec());
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let mut uncle2_header = Header::new();
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uncle2_header.set_extra_data(b"uncle2".to_vec());
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open_block.push_uncle(uncle1_header).unwrap();
open_block.push_uncle(uncle2_header).unwrap();
let b = open_block.close_and_lock().seal(engine, vec![]).unwrap();
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let orig_bytes = b.rlp_bytes();
let orig_db = b.drain();
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let db = spec.ensure_db_good(get_temp_state_db(), &Default::default()).unwrap();
let e = enact_and_seal(&orig_bytes, engine, false, db, &genesis_header, last_hashes, Default::default()).unwrap();
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let bytes = e.rlp_bytes();
assert_eq!(bytes, orig_bytes);
let uncles = BlockView::new(&bytes).uncles();
assert_eq!(uncles[1].extra_data(), b"uncle2");
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let db = e.drain();
assert_eq!(orig_db.journal_db().keys(), db.journal_db().keys());
assert!(orig_db.journal_db().keys().iter().filter(|k| orig_db.journal_db().get(k.0) != db.journal_db().get(k.0)).next() == None);
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}
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}