Keep track of local transactions

Cargo.lock

@@ -297,6 +297,7 @@ dependencies = [
  "heapsize 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "hyper 0.9.4 (git+https://github.com/ethcore/hyper)",
  "lazy_static 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "linked-hash-map 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "lru-cache 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "num_cpus 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",

ethcore/Cargo.toml

@@ -27,6 +27,7 @@ time = "0.1"
 rand = "0.3"
 byteorder = "0.5"
 transient-hashmap = "0.1"
+linked-hash-map = "0.3.0"
 evmjit = { path = "../evmjit", optional = true }
 clippy = { version = "0.0.96", optional = true}
 ethash = { path = "../ethash" }

ethcore/src/lib.rs

@@ -102,6 +102,7 @@ extern crate rlp;
 extern crate ethcore_bloom_journal as bloom_journal;
 extern crate byteorder;
 extern crate transient_hashmap;
+extern crate linked_hash_map;
 
 #[macro_use]
 extern crate log;

ethcore/src/miner/local_transactions.rs

@@ -0,0 +1,193 @@
+// Copyright 2015, 2016 Ethcore (UK) Ltd.
+// 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/>.
+
+//! Local Transactions List.
+
+use linked_hash_map::LinkedHashMap;
+use transaction::SignedTransaction;
+use error::TransactionError;
+use util::{U256, H256};
+
+#[derive(Debug, PartialEq, Clone)]
+pub enum Status {
+	/// The transaction is currently in the transaction queue.
+	Pending,
+	/// The transaction is in future part of the queue.
+	Future,
+	/// Transaction is already mined.
+	Mined(SignedTransaction),
+	/// Transaction is dropped because of limit
+	Dropped(SignedTransaction),
+	/// Replaced because of higher gas price of another transaction.
+	Replaced(SignedTransaction, U256, H256),
+	/// Transaction was never accepted to the queue.
+	Rejected(SignedTransaction, TransactionError),
+	/// Transaction is invalid.
+	Invalid(SignedTransaction),
+}
+
+impl Status {
+	fn is_current(&self) -> bool {
+		*self == Status::Pending || *self == Status::Future
+	}
+}
+
+/// Keeps track of local transactions that are in the queue or were mined/dropped recently.
+#[derive(Debug)]
+pub struct LocalTransactionsList {
+	max_old: usize,
+	transactions: LinkedHashMap<H256, Status>,
+}
+
+impl Default for LocalTransactionsList {
+	fn default() -> Self {
+		Self::new(10)
+	}
+}
+
+impl LocalTransactionsList {
+	pub fn new(max_old: usize) -> Self {
+		LocalTransactionsList {
+			max_old: max_old,
+			transactions: Default::default(),
+		}
+	}
+
+	pub fn mark_pending(&mut self, hash: H256) {
+		self.clear_old();
+		self.transactions.insert(hash, Status::Pending);
+	}
+
+	pub fn mark_future(&mut self, hash: H256) {
+		self.transactions.insert(hash, Status::Future);
+		self.clear_old();
+	}
+
+	pub fn mark_rejected(&mut self, tx: SignedTransaction, err: TransactionError) {
+		self.transactions.insert(tx.hash(), Status::Rejected(tx, err));
+		self.clear_old();
+	}
+
+	pub fn mark_replaced(&mut self, tx: SignedTransaction, gas_price: U256, hash: H256) {
+		self.transactions.insert(tx.hash(), Status::Replaced(tx, gas_price, hash));
+		self.clear_old();
+	}
+
+	pub fn mark_invalid(&mut self, tx: SignedTransaction) {
+		self.transactions.insert(tx.hash(), Status::Invalid(tx));
+		self.clear_old();
+	}
+
+	pub fn mark_dropped(&mut self, tx: SignedTransaction) {
+		self.transactions.insert(tx.hash(), Status::Dropped(tx));
+		self.clear_old();
+	}
+
+	pub fn mark_mined(&mut self, tx: SignedTransaction) {
+		self.transactions.insert(tx.hash(), Status::Mined(tx));
+		self.clear_old();
+	}
+
+	pub fn contains(&self, hash: &H256) -> bool {
+		self.transactions.contains_key(hash)
+	}
+
+	pub fn all_transactions(&self) -> &LinkedHashMap<H256, Status> {
+		&self.transactions
+	}
+
+	fn clear_old(&mut self) {
+		let number_of_old = self.transactions
+			.values()
+			.filter(|status| !status.is_current())
+			.count();
+
+		if self.max_old >= number_of_old {
+			return;
+		}
+
+		let to_remove = self.transactions
+			.iter()
+			.filter(|&(_, status)| !status.is_current())
+			.map(|(hash, _)| *hash)
+			.take(number_of_old - self.max_old)
+			.collect::<Vec<_>>();
+
+		for hash in to_remove {
+			self.transactions.remove(&hash);
+		}
+	}
+}
+
+#[cfg(test)]
+mod tests {
+	use util::U256;
+	use ethkey::{Random, Generator};
+	use transaction::{Action, Transaction, SignedTransaction};
+	use super::{LocalTransactionsList, Status};
+
+	#[test]
+	fn should_add_transaction_as_pending() {
+		// given
+		let mut list = LocalTransactionsList::default();
+
+		// when
+		list.mark_pending(10.into());
+		list.mark_future(20.into());
+
+		// then
+		assert!(list.contains(&10.into()), "Should contain the transaction.");
+		assert!(list.contains(&20.into()), "Should contain the transaction.");
+		let statuses = list.all_transactions().values().cloned().collect::<Vec<Status>>();
+		assert_eq!(statuses, vec![Status::Pending, Status::Future]);
+	}
+
+	#[test]
+	fn should_clear_old_transactions() {
+		// given
+		let mut list = LocalTransactionsList::new(1);
+		let tx1 = new_tx(10.into());
+		let tx1_hash = tx1.hash();
+		let tx2 = new_tx(50.into());
+		let tx2_hash = tx2.hash();
+
+		list.mark_pending(10.into());
+		list.mark_invalid(tx1);
+		list.mark_dropped(tx2);
+		assert!(list.contains(&tx2_hash));
+		assert!(!list.contains(&tx1_hash));
+		assert!(list.contains(&10.into()));
+
+		// when
+		list.mark_future(15.into());
+
+		// then
+		assert!(list.contains(&10.into()));
+		assert!(list.contains(&15.into()));
+	}
+
+	fn new_tx(nonce: U256) -> SignedTransaction {
+		let keypair = Random.generate().unwrap();
+		Transaction {
+			action: Action::Create,
+			value: U256::from(100),
+			data: Default::default(),
+			gas: U256::from(10),
+			gas_price: U256::from(1245),
+			nonce: nonce
+		}.sign(keypair.secret(), None)
+	}
+}

ethcore/src/miner/mod.rs

@@ -43,6 +43,7 @@
 
 mod banning_queue;
 mod external;
+mod local_transactions;
 mod miner;
 mod price_info;
 mod transaction_queue;

ethcore/src/miner/transaction_queue.rs

@@ -91,6 +91,7 @@ use util::table::Table;
 use transaction::*;
 use error::{Error, TransactionError};
 use client::TransactionImportResult;
+use miner::local_transactions::LocalTransactionsList;
 
 /// Transaction origin
 #[derive(Clone, Copy, Debug, PartialEq, Eq)]
@@ -125,6 +126,12 @@ impl Ord for TransactionOrigin {
 	}
 }
 
+impl TransactionOrigin {
+	fn is_local(&self) -> bool {
+		*self == TransactionOrigin::Local
+	}
+}
+
 #[derive(Clone, Debug)]
 /// Light structure used to identify transaction and its order
 struct TransactionOrder {
@@ -352,7 +359,7 @@ impl TransactionSet {
 	///
 	/// It drops transactions from this set but also removes associated `VerifiedTransaction`.
 	/// Returns addresses and lowest nonces of transactions removed because of limit.
-	fn enforce_limit(&mut self, by_hash: &mut HashMap<H256, VerifiedTransaction>) -> Option<HashMap<Address, U256>> {
+	fn enforce_limit(&mut self, by_hash: &mut HashMap<H256, VerifiedTransaction>, local: &mut LocalTransactionsList) -> Option<HashMap<Address, U256>> {
 		let mut count = 0;
 		let mut gas: U256 = 0.into();
 		let to_drop : Vec<(Address, U256)> = {
@@ -379,9 +386,13 @@ impl TransactionSet {
 					.expect("Transaction has just been found in `by_priority`; so it is in `by_address` also.");
 				trace!(target: "txqueue", "Dropped out of limit transaction: {:?}", order.hash);
 
-				by_hash.remove(&order.hash)
+				let order = by_hash.remove(&order.hash)
 					.expect("hash is in `by_priorty`; all hashes in `by_priority` must be in `by_hash`; qed");
 
+				if order.origin.is_local() {
+					local.mark_dropped(order.transaction);
+				}
+
 				let min = removed.get(&sender).map_or(nonce, |val| cmp::min(*val, nonce));
 				removed.insert(sender, min);
 				removed
@@ -488,6 +499,8 @@ pub struct TransactionQueue {
 	by_hash: HashMap<H256, VerifiedTransaction>,
 	/// Last nonce of transaction in current (to quickly check next expected transaction)
 	last_nonces: HashMap<Address, U256>,
+	/// List of local transactions and their statuses.
+	local_transactions: LocalTransactionsList,
 }
 
 impl Default for TransactionQueue {
@@ -529,6 +542,7 @@ impl TransactionQueue {
 			future: future,
 			by_hash: HashMap::new(),
 			last_nonces: HashMap::new(),
+			local_transactions: LocalTransactionsList::default(),
 		}
 	}
 
@@ -537,8 +551,8 @@ impl TransactionQueue {
 		self.current.set_limit(limit);
 		self.future.set_limit(limit);
 		// And ensure the limits
-		self.current.enforce_limit(&mut self.by_hash);
+		self.current.enforce_limit(&mut self.by_hash, &mut self.local_transactions);
-		self.future.enforce_limit(&mut self.by_hash);
+		self.future.enforce_limit(&mut self.by_hash, &mut self.local_transactions);
 	}
 
 	/// Returns current limit of transactions in the queue.
@@ -578,7 +592,7 @@ impl TransactionQueue {
 	pub fn set_total_gas_limit(&mut self, gas_limit: U256) {
 		self.future.gas_limit = gas_limit;
 		self.current.gas_limit = gas_limit;
-		self.future.enforce_limit(&mut self.by_hash);
+		self.future.enforce_limit(&mut self.by_hash, &mut self.local_transactions);
 	}
 
 	/// Set the new limit for the amount of gas any individual transaction may have.
@@ -609,6 +623,42 @@ impl TransactionQueue {
 		F: Fn(&Address) -> AccountDetails,
 		G: Fn(&SignedTransaction) -> U256,
 	{
+		if origin == TransactionOrigin::Local {
+			let hash = tx.hash();
+			let cloned_tx = tx.clone();
+
+			let result = self.add_internal(tx, origin, fetch_account, gas_estimator);
+			match result {
+				Ok(TransactionImportResult::Current) => {
+					self.local_transactions.mark_pending(hash);
+				},
+				Ok(TransactionImportResult::Future) => {
+					self.local_transactions.mark_future(hash);
+				},
+				Err(Error::Transaction(ref err)) => {
+					self.local_transactions.mark_rejected(cloned_tx, err.clone());
+				},
+				Err(_) => {
+					self.local_transactions.mark_invalid(cloned_tx);
+				},
+			}
+			result
+		} else {
+			self.add_internal(tx, origin, fetch_account, gas_estimator)
+		}
+	}
+
+	/// Adds signed transaction to the queue.
+	fn add_internal<F, G>(
+		&mut self,
+		tx: SignedTransaction,
+		origin: TransactionOrigin,
+		fetch_account: &F,
+		gas_estimator: &G,
+	) -> Result<TransactionImportResult, Error> where
+		F: Fn(&Address) -> AccountDetails,
+		G: Fn(&SignedTransaction) -> U256,
+	{
 
 		if tx.gas_price < self.minimal_gas_price && origin != TransactionOrigin::Local {
 			trace!(target: "txqueue",
@@ -647,7 +697,6 @@ impl TransactionQueue {
 				self.gas_limit,
 				self.tx_gas_limit
 			);
-
 			return Err(Error::Transaction(TransactionError::GasLimitExceeded {
 				limit: self.gas_limit,
 				got: tx.gas,
@@ -766,6 +815,11 @@ impl TransactionQueue {
 
 		trace!(target: "txqueue", "Removing invalid transaction: {:?}", transaction.hash());
 
+		// Mark in locals
+		if self.local_transactions.contains(transaction_hash) {
+			self.local_transactions.mark_invalid(transaction.transaction.clone());
+		}
+
 		// Remove from future
 		let order = self.future.drop(&sender, &nonce);
 		if order.is_some() {
@@ -821,15 +875,21 @@ impl TransactionQueue {
 															 qed");
 			if k >= current_nonce {
 				let order = order.update_height(k, current_nonce);
+				if order.origin.is_local() {
+					self.local_transactions.mark_future(order.hash);
+				}
 				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);
+					Self::replace_orders(*sender, k, old, order, &mut self.future, &mut self.by_hash, &mut self.local_transactions);
 				}
 			} 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`");
+				let tx = self.by_hash.remove(&order.hash).expect("All transactions in `future` are also in `by_hash`");
+				if tx.origin.is_local() {
+					self.local_transactions.mark_mined(tx.transaction);
+				}
 			}
 		}
-		self.future.enforce_limit(&mut self.by_hash);
+		self.future.enforce_limit(&mut self.by_hash, &mut self.local_transactions);
 	}
 
 	/// Returns top transactions from the queue ordered by priority.
@@ -897,8 +957,11 @@ 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);
+				if order.origin.is_local() {
+					self.local_transactions.mark_pending(order.hash);
+				}
 				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);
+					Self::replace_orders(address, current_nonce, old, order, &mut self.current, &mut self.by_hash, &mut self.local_transactions);
 				}
 				update_last_nonce_to = Some(current_nonce);
 				current_nonce = current_nonce + U256::one();
@@ -957,9 +1020,11 @@ impl TransactionQueue {
 		if nonce > next_nonce {
 			// We have a gap - put to future.
 			// Insert transaction (or replace old one with lower gas price)
-			try!(check_too_cheap(Self::replace_transaction(tx, state_nonce, min_gas_price, &mut self.future, &mut self.by_hash)));
+			try!(check_too_cheap(
+				Self::replace_transaction(tx, state_nonce, min_gas_price, &mut self.future, &mut self.by_hash, &mut self.local_transactions)
+			));
 			// Enforce limit in Future
-			let removed = self.future.enforce_limit(&mut self.by_hash);
+			let removed = self.future.enforce_limit(&mut self.by_hash, &mut self.local_transactions);
 			// Return an error if this transaction was not imported because of limit.
 			try!(check_if_removed(&address, &nonce, removed));
 
@@ -973,13 +1038,15 @@ impl TransactionQueue {
 		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, min_gas_price, &mut self.current, &mut self.by_hash)));
+		try!(check_too_cheap(
+			Self::replace_transaction(tx, state_nonce, min_gas_price, &mut self.current, &mut self.by_hash, &mut self.local_transactions)
+		));
 		// 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);
 
 		// Also enforce the limit
-		let removed = self.current.enforce_limit(&mut self.by_hash);
+		let removed = self.current.enforce_limit(&mut self.by_hash, &mut self.local_transactions);
 		// If some transaction were removed because of limit we need to update last_nonces also.
 		self.update_last_nonces(&removed);
 		// Trigger error if the transaction we are importing was removed.
@@ -1010,7 +1077,14 @@ impl TransactionQueue {
 	///
 	/// Returns `true` if transaction actually got to the queue (`false` if there was already a transaction with higher
 	/// gas_price)
-	fn replace_transaction(tx: VerifiedTransaction, base_nonce: U256, min_gas_price: (U256, PrioritizationStrategy), set: &mut TransactionSet, by_hash: &mut HashMap<H256, VerifiedTransaction>) -> bool {
+	fn replace_transaction(
+		tx: VerifiedTransaction,
+		base_nonce: U256,
+		min_gas_price: (U256, PrioritizationStrategy),
+		set: &mut TransactionSet,
+		by_hash: &mut HashMap<H256, VerifiedTransaction>,
+		local: &mut LocalTransactionsList,
+	) -> bool {
 		let order = TransactionOrder::for_transaction(&tx, base_nonce, min_gas_price.0, min_gas_price.1);
 		let hash = tx.hash();
 		let address = tx.sender();
@@ -1021,14 +1095,24 @@ impl TransactionQueue {
 
 
 		if let Some(old) = set.insert(address, nonce, order.clone()) {
-			Self::replace_orders(address, nonce, old, order, set, by_hash)
+			Self::replace_orders(address, nonce, old, order, set, by_hash, local)
 		} else {
 			true
 		}
 	}
 
-	fn replace_orders(address: Address, nonce: U256, old: TransactionOrder, order: TransactionOrder, set: &mut TransactionSet, by_hash: &mut HashMap<H256, VerifiedTransaction>) -> bool {
+	fn replace_orders(
+		address: Address,
+		nonce: U256,
+		old: TransactionOrder,
+		order: TransactionOrder,
+		set: &mut TransactionSet,
+		by_hash: &mut HashMap<H256, VerifiedTransaction>,
+		local: &mut LocalTransactionsList,
+	) -> bool {
 		// There was already transaction in queue. Let's check which one should stay
+		let old_hash = old.hash;
+		let new_hash = order.hash;
 		let old_fee = old.gas_price;
 		let new_fee = order.gas_price;
 		if old_fee.cmp(&new_fee) == Ordering::Greater {
@@ -1036,12 +1120,18 @@ impl TransactionQueue {
 			// 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`.");
+			let order = by_hash.remove(&order.hash).expect("The hash has been just inserted and no other line is altering `by_hash`.");
+			if order.origin.is_local() {
+				local.mark_replaced(order.transaction, old_fee, old_hash);
+			}
 			false
 		} else {
 			trace!(target: "txqueue", "Replaced transaction: {:?} with transaction with higher gas price: {:?}", old.hash, order.hash);
 			// 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`.");
+			let old = by_hash.remove(&old.hash).expect("The hash is coming from `future` so it has to be in `by_hash`.");
+			if old.origin.is_local() {
+				local.mark_replaced(old.transaction, new_fee, new_hash);
+			}
 			true
 		}
 	}
@@ -1078,6 +1168,7 @@ mod test {
 	use error::{Error, TransactionError};
 	use super::*;
 	use super::{TransactionSet, TransactionOrder, VerifiedTransaction};
+	use miner::local_transactions::LocalTransactionsList;
 	use client::TransactionImportResult;
 
 	fn unwrap_tx_err(err: Result<TransactionImportResult, Error>) -> TransactionError {
@@ -1208,6 +1299,7 @@ mod test {
 	#[test]
 	fn should_create_transaction_set() {
 		// given
+		let mut local = LocalTransactionsList::default();
 		let mut set = TransactionSet {
 			by_priority: BTreeSet::new(),
 			by_address: Table::new(),
@@ -1235,7 +1327,7 @@ mod test {
 		assert_eq!(set.by_address.len(), 2);
 
 		// when
-		set.enforce_limit(&mut by_hash);
+		set.enforce_limit(&mut by_hash, &mut local);
 
 		// then
 		assert_eq!(by_hash.len(), 1);