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Fixing transaction queue (#2392)

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This commit is contained in:
Tomasz Drwięga 2016-09-29 12:46:04 +02:00 committed by Arkadiy Paronyan
parent 1c61d7c813
commit 01018b417a
3 changed files with 76 additions and 41 deletions
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2
ethcore/src/block.rs
View File

@ -411,7 +411,7 @@ impl ClosedBlock {
pub fn hash(&self) -> H256 { self.header().rlp_sha3(Seal::Without) }
/// Turn this into a `LockedBlock`, unable to be reopened again.
pub fn lock(mut self) -> LockedBlock {
pub fn lock(self) -> LockedBlock {
LockedBlock {
block: self.block,
uncle_bytes: self.uncle_bytes,

1
ethcore/src/blockchain/blockchain.rs
View File

@ -1389,7 +1389,6 @@ mod tests {
.generate(&mut fork_finalizer).unwrap();
let b1a_hash = BlockView::new(&b1a).header_view().sha3();
let b1b_hash = BlockView::new(&b1b).header_view().sha3();
let b2_hash = BlockView::new(&b2).header_view().sha3();
let t1_hash = t1.hash();

114
ethcore/src/miner/transaction_queue.rs
View File

@ -714,7 +714,10 @@ impl TransactionQueue {
let order = self.current.drop(sender, &k).expect("iterating over a collection that has been retrieved above;
qed");
if k >= current_nonce {
self.future.insert(*sender, k, order.update_height(k, current_nonce));
let order = order.update_height(k, current_nonce);
if let Some(old) = self.future.insert(*sender, k, order.clone()) {
Self::replace_orders(*sender, k, old, order, &mut self.future, &mut self.by_hash);
}
} else {
trace!(target: "txqueue", "Removing old transaction: {:?} (nonce: {} < {})", order.hash, k, current_nonce);
self.by_hash.remove(&order.hash).expect("All transactions in `future` are also in `by_hash`");
@ -779,7 +782,9 @@ impl TransactionQueue {
self.future.by_gas_price.remove(&order.gas_price, &order.hash);
// Put to current
let order = order.update_height(current_nonce, first_nonce);
self.current.insert(address, current_nonce, order);
if let Some(old) = self.current.insert(address, current_nonce, order.clone()) {
Self::replace_orders(address, current_nonce, old, order, &mut self.current, &mut self.by_hash);
}
update_last_nonce_to = Some(current_nonce);
current_nonce = current_nonce + U256::one();
}
@ -813,47 +818,49 @@ impl TransactionQueue {
let nonce = tx.nonce();
let hash = tx.hash();
let next_nonce = self.last_nonces
.get(&address)
.cloned()
.map_or(state_nonce, |n| n + U256::one());
// The transaction might be old, let's check that.
// This has to be the first test, otherwise calculating
// nonce height would result in overflow.
if nonce < state_nonce {
// Droping transaction
trace!(target: "txqueue", "Dropping old transaction: {:?} (nonce: {} < {})", tx.hash(), nonce, next_nonce);
trace!(target: "txqueue", "Dropping old transaction: {:?} (nonce: {} < {})", tx.hash(), nonce, state_nonce);
return Err(TransactionError::Old);
} else if nonce > next_nonce {
}
// Update nonces of transactions in future (remove old transactions)
self.update_future(&address, state_nonce);
// State nonce could be updated. Maybe there are some more items waiting in future?
self.move_matching_future_to_current(address, state_nonce, state_nonce);
// Check the next expected nonce (might be updated by move above)
let next_nonce = self.last_nonces
.get(&address)
.cloned()
.map_or(state_nonce, |n| n + U256::one());
// Future transaction
if nonce > next_nonce {
// We have a gap - put to future.
// Update nonces of transactions in future (remove old transactions)
self.update_future(&address, state_nonce);
// Insert transaction (or replace old one with lower gas price)
try!(check_too_cheap(Self::replace_transaction(tx, state_nonce, &mut self.future, &mut self.by_hash)));
// Return an error if this transaction is not imported because of limit.
try!(check_if_removed(&address, &nonce, self.future.enforce_limit(&mut self.by_hash)));
// Enforce limit in Future
let removed = self.future.enforce_limit(&mut self.by_hash);
// Return an error if this transaction was not imported because of limit.
try!(check_if_removed(&address, &nonce, removed));
debug!(target: "txqueue", "Importing transaction to future: {:?}", hash);
debug!(target: "txqueue", "status: {:?}", self.status());
return Ok(TransactionImportResult::Future);
}
// We might have filled a gap - move some more transactions from future
self.move_matching_future_to_current(address, nonce, state_nonce);
self.move_matching_future_to_current(address, nonce + U256::one(), state_nonce);
// Replace transaction if any
try!(check_too_cheap(Self::replace_transaction(tx, state_nonce, &mut self.current, &mut self.by_hash)));
// Keep track of highest nonce stored in current
let new_max = self.last_nonces.get(&address).map_or(nonce, |n| cmp::max(nonce, *n));
self.last_nonces.insert(address, new_max);
// Update nonces of transactions in future
self.update_future(&address, state_nonce);
// Maybe there are some more items waiting in future?
self.move_matching_future_to_current(address, nonce + U256::one(), state_nonce);
// There might be exactly the same transaction waiting in future
// same (sender, nonce), but above function would not move it.
if let Some(order) = self.future.drop(&address, &nonce) {
// Let's insert that transaction to current (if it has higher gas_price)
let future_tx = self.by_hash.remove(&order.hash).expect("All transactions in `future` are always in `by_hash`.");
// if transaction in `current` (then one we are importing) is replaced it means that it has to low gas_price
try!(check_too_cheap(!Self::replace_transaction(future_tx, state_nonce, &mut self.current, &mut self.by_hash)));
}
// Also enforce the limit
let removed = self.current.enforce_limit(&mut self.by_hash);
@ -898,24 +905,28 @@ impl TransactionQueue {
if let Some(old) = set.insert(address, nonce, order.clone()) {
// There was already transaction in queue. Let's check which one should stay
let old_fee = old.gas_price;
let new_fee = order.gas_price;
if old_fee.cmp(&new_fee) == Ordering::Greater {
// Put back old transaction since it has greater priority (higher gas_price)
set.insert(address, nonce, old);
// and remove new one
by_hash.remove(&hash).expect("The hash has been just inserted and no other line is altering `by_hash`.");
false
} else {
// Make sure we remove old transaction entirely
by_hash.remove(&old.hash).expect("The hash is coming from `future` so it has to be in `by_hash`.");
true
}
Self::replace_orders(address, nonce, old, order, set, by_hash)
} else {
true
}
}
fn replace_orders(address: Address, nonce: U256, old: TransactionOrder, order: TransactionOrder, set: &mut TransactionSet, by_hash: &mut HashMap<H256, VerifiedTransaction>) -> bool {
// There was already transaction in queue. Let's check which one should stay
let old_fee = old.gas_price;
let new_fee = order.gas_price;
if old_fee.cmp(&new_fee) == Ordering::Greater {
// Put back old transaction since it has greater priority (higher gas_price)
set.insert(address, nonce, old);
// and remove new one
by_hash.remove(&order.hash).expect("The hash has been just inserted and no other line is altering `by_hash`.");
false
} else {
// Make sure we remove old transaction entirely
by_hash.remove(&old.hash).expect("The hash is coming from `future` so it has to be in `by_hash`.");
true
}
}
}
fn check_too_cheap(is_in: bool) -> Result<(), TransactionError> {
@ -1210,6 +1221,31 @@ mod test {
assert_eq!(txq.top_transactions()[0], tx2);
}
#[test]
fn should_move_all_transactions_from_future() {
// given
let mut txq = TransactionQueue::new();
let (tx, tx2) = new_tx_pair_default(1.into(), 1.into());
let prev_nonce = |a: &Address| AccountDetails{ nonce: default_account_details(a).nonce - U256::one(), balance:
!U256::zero() };
// First insert one transaction to future
let res = txq.add(tx.clone(), &prev_nonce, TransactionOrigin::External);
assert_eq!(res.unwrap(), TransactionImportResult::Future);
assert_eq!(txq.status().future, 1);
// now import second transaction to current
let res = txq.add(tx2.clone(), &default_account_details, TransactionOrigin::External);
// then
assert_eq!(res.unwrap(), TransactionImportResult::Current);
assert_eq!(txq.status().pending, 2);
assert_eq!(txq.status().future, 0);
assert_eq!(txq.current.by_priority.len(), 2);
assert_eq!(txq.current.by_address.len(), 2);
assert_eq!(txq.top_transactions()[0], tx);
assert_eq!(txq.top_transactions()[1], tx2);
}
#[test]
fn should_import_tx() {