Moving block sealing and transaction_queue to separate create

2016-03-08 15:46:44 +01:00 · 2016-03-08 15:46:44 +01:00 · 99a6802b61
commit 99a6802b61
parent f973610b38
14 changed files with 375 additions and 167 deletions
--- a/Cargo.lock
+++ b/Cargo.lock
@ -11,6 +11,7 @@ dependencies = [
 "ethcore-devtools 0.9.99",
 "ethcore-rpc 0.9.99",
 "ethcore-util 0.9.99",
+ "ethminer 0.9.99",
 "ethsync 0.9.99",
 "fdlimit 0.1.0",
 "log 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
@ -235,6 +236,7 @@ dependencies = [
 "ethash 0.9.99",
 "ethcore 0.9.99",
 "ethcore-util 0.9.99",
+ "ethminer 0.9.99",
 "ethsync 0.9.99",
 "jsonrpc-core 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
 "jsonrpc-http-server 2.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
@ -282,6 +284,19 @@ dependencies = [
 "vergen 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]

+[[package]]
+name = "ethminer"
+version = "0.9.99"
+dependencies = [
+ "clippy 0.0.44 (registry+https://github.com/rust-lang/crates.io-index)",
+ "env_logger 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "ethcore 0.9.99",
+ "ethcore-util 0.9.99",
+ "log 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rayon 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rustc-serialize 0.3.18 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "ethsync"
 version = "0.9.99"
@ -290,11 +305,10 @@ dependencies = [
 "env_logger 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
 "ethcore 0.9.99",
 "ethcore-util 0.9.99",
+ "ethminer 0.9.99",
 "heapsize 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
 "log 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
 "rand 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)",
- "rayon 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "rustc-serialize 0.3.18 (registry+https://github.com/rust-lang/crates.io-index)",
 "time 0.1.34 (registry+https://github.com/rust-lang/crates.io-index)",
 ]

--- a/Cargo.toml
+++ b/Cargo.toml
@ -16,6 +16,7 @@ clippy = { version = "0.0.44", optional = true }
 ethcore-util = { path = "util" }
 ethcore = { path = "ethcore" }
 ethsync = { path = "sync" }
+ethminer = { path = "miner" }
 ethcore-rpc = { path = "rpc", optional = true }
 fdlimit = { path = "util/fdlimit" }
 daemonize = "0.2"
--- a/ethcore/src/client.rs
+++ b/ethcore/src/client.rs
@ -17,7 +17,6 @@
 //! Blockchain database client.

 use std::marker::PhantomData;
-use std::sync::atomic::AtomicBool;
 use util::*;
 use util::panics::*;
 use blockchain::{BlockChain, BlockProvider};
@ -185,6 +184,9 @@ pub trait BlockChainClient : Sync + Send {

 	/// Returns logs matching given filter.
 	fn logs(&self, filter: Filter) -> Vec<LocalizedLogEntry>;
+
+	fn prepare_sealing(&self, author: Address, extra_data: Bytes) -> Option<ClosedBlock>;
+	fn try_seal(&self, block: ClosedBlock, seal: Vec<Bytes>) -> Result<SealedBlock, ClosedBlock>;
 }

 #[derive(Default, Clone, Debug, Eq, PartialEq)]
@ -219,12 +221,6 @@ pub struct Client<V = CanonVerifier> where V: Verifier {
 	report: RwLock<ClientReport>,
 	import_lock: Mutex<()>,
 	panic_handler: Arc<PanicHandler>,
-
-	// for sealing...
-	sealing_enabled: AtomicBool,
-	sealing_block: Mutex<Option<ClosedBlock>>,
-	author: RwLock<Address>,
-	extra_data: RwLock<Bytes>,
 	verifier: PhantomData<V>,
 	secret_store: Arc<RwLock<SecretStore>>,
 }
@ -273,10 +269,6 @@ impl<V> Client<V> where V: Verifier {
 			report: RwLock::new(Default::default()),
 			import_lock: Mutex::new(()),
 			panic_handler: panic_handler,
-			sealing_enabled: AtomicBool::new(false),
-			sealing_block: Mutex::new(None),
-			author: RwLock::new(Address::new()),
-			extra_data: RwLock::new(Vec::new()),
 			verifier: PhantomData,
 			secret_store: secret_store,
 		}))
@ -425,10 +417,6 @@ impl<V> Client<V> where V: Verifier {
 			}
 		}

-		if self.chain_info().best_block_hash != original_best && self.sealing_enabled.load(atomic::Ordering::Relaxed) {
-			self.prepare_sealing();
-		}
-
 		imported
 	}

@ -477,85 +465,46 @@ impl<V> Client<V> where V: Verifier {
 			BlockId::Latest => Some(self.chain.read().unwrap().best_block_number())
 		}
 	}
+}

-	/// Get the author that we will seal blocks as.
-	pub fn author(&self) -> Address {
-		self.author.read().unwrap().clone()
+
+// TODO: need MinerService MinerIoHandler
+
+impl<V> BlockChainClient for Client<V> where V: Verifier {
+
+
+	fn try_seal(&self, block: ClosedBlock, seal: Vec<Bytes>) -> Result<SealedBlock, ClosedBlock> {
+		block.try_seal(self.engine.deref().deref(), seal)
 	}

-	/// Set the author that we will seal blocks as.
-	pub fn set_author(&self, author: Address) {
-		*self.author.write().unwrap() = author;
-	}
-
-	/// Get the extra_data that we will seal blocks wuth.
-	pub fn extra_data(&self) -> Bytes {
-		self.extra_data.read().unwrap().clone()
-	}
-
-	/// Set the extra_data that we will seal blocks with.
-	pub fn set_extra_data(&self, extra_data: Bytes) {
-		*self.extra_data.write().unwrap() = extra_data;
-	}
-
-	/// New chain head event. Restart mining operation.
-	pub fn prepare_sealing(&self) {
+	fn prepare_sealing(&self, author: Address, extra_data: Bytes) -> Option<ClosedBlock> {
+		let engine = self.engine.deref().deref();
 		let h = self.chain.read().unwrap().best_block_hash();
+
 		let mut b = OpenBlock::new(
-			self.engine.deref().deref(),
+			engine,
 			self.state_db.lock().unwrap().clone(),
-			match self.chain.read().unwrap().block_header(&h) { Some(ref x) => x, None => {return;} },
+			match self.chain.read().unwrap().block_header(&h) { Some(ref x) => x, None => { return None; } },
 			self.build_last_hashes(h.clone()),
-			self.author(),
-			self.extra_data()
+			author,
+			extra_data,
 		);

-		self.chain.read().unwrap().find_uncle_headers(&h, self.engine.deref().deref().maximum_uncle_age()).unwrap().into_iter().take(self.engine.deref().deref().maximum_uncle_count()).foreach(|h| { b.push_uncle(h).unwrap(); });
+		self.chain.read().unwrap().find_uncle_headers(&h, engine.maximum_uncle_age())
+			.unwrap()
+			.into_iter()
+			.take(engine.maximum_uncle_count())
+			.foreach(|h| {
+				b.push_uncle(h).unwrap();
+			});

 		// TODO: push transactions.

 		let b = b.close();
 		trace!("Sealing: number={}, hash={}, diff={}", b.hash(), b.block().header().difficulty(), b.block().header().number());
-		*self.sealing_block.lock().unwrap() = Some(b);
+		Some(b)
 	}

-	/// Grab the `ClosedBlock` that we want to be sealed. Comes as a mutex that you have to lock.
-	pub fn sealing_block(&self) -> &Mutex<Option<ClosedBlock>> {
-		if self.sealing_block.lock().unwrap().is_none() {
-			self.sealing_enabled.store(true, atomic::Ordering::Relaxed);
-			// TODO: Above should be on a timer that resets after two blocks have arrived without being asked for.
-			self.prepare_sealing();
-		}
-		&self.sealing_block
-	}
-
-	/// Submit `seal` as a valid solution for the header of `pow_hash`.
-	/// Will check the seal, but not actually insert the block into the chain.
-	pub fn submit_seal(&self, pow_hash: H256, seal: Vec<Bytes>) -> Result<(), Error> {
-		let mut maybe_b = self.sealing_block.lock().unwrap();
-		match *maybe_b {
-			Some(ref b) if b.hash() == pow_hash => {}
-			_ => { return Err(Error::PowHashInvalid); }
-		}
-
-		let b = maybe_b.take();
-		match b.unwrap().try_seal(self.engine.deref().deref(), seal) {
-			Err(old) => {
-				*maybe_b = Some(old);
-				Err(Error::PowInvalid)
-			}
-			Ok(sealed) => {
-				// TODO: commit DB from `sealed.drain` and make a VerifiedBlock to skip running the transactions twice.
-				try!(self.import_block(sealed.rlp_bytes()));
-				Ok(())
-			}
-		}
-	}
-}
-
-// TODO: need MinerService MinerIoHandler
-
-impl<V> BlockChainClient for Client<V> where V: Verifier {
 	fn block_header(&self, id: BlockId) -> Option<Bytes> {
 		let chain = self.chain.read().unwrap();
 		Self::block_hash(&chain, id).and_then(|hash| chain.block(&hash).map(|bytes| BlockView::new(&bytes).rlp().at(0).as_raw().to_vec()))
--- a/miner/Cargo.toml
+++ b/miner/Cargo.toml
@ -0,0 +1,20 @@
+[package]
+description = "Ethminer library"
+homepage = "http://ethcore.io"
+license = "GPL-3.0"
+name = "ethminer"
+version = "0.9.99"
+authors = ["Ethcore <admin@ethcore.io>"]
+
+[dependencies]
+ethcore-util = { path = "../util" }
+ethcore = { path = "../ethcore" }
+log = "0.3"
+env_logger = "0.3"
+rustc-serialize = "0.3"
+rayon = "0.3.1"
+clippy = { version = "0.0.44", optional = true }
+
+[features]
+dev = ["clippy"]
+default = []
--- a/miner/src/lib.rs
+++ b/miner/src/lib.rs
@ -0,0 +1,86 @@
+// 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/>.
+
+#![warn(missing_docs)]
+#![cfg_attr(feature="dev", feature(plugin))]
+#![cfg_attr(feature="dev", plugin(clippy))]
+
+#[macro_use]
+extern crate log;
+#[macro_use]
+extern crate ethcore_util as util;
+extern crate ethcore;
+extern crate env_logger;
+extern crate rayon;
+
+mod miner;
+mod transaction_queue;
+
+use util::{Bytes, H256, Address};
+use std::ops::*;
+use std::sync::*;
+use util::TimerToken;
+use ethcore::block::*;
+use ethcore::error::*;
+use ethcore::client::{Client, BlockChainClient};
+use ethcore::transaction::*;
+use miner::Miner;
+
+pub struct EthMiner {
+	miner: Miner,
+	/// Shared blockchain client. TODO: this should evetually become an IPC endpoint
+	chain: Arc<Client>,
+}
+
+impl EthMiner {
+	/// Creates and register protocol with the network service
+	pub fn new(chain: Arc<Client>) -> Arc<EthMiner> {
+		Arc::new(EthMiner {
+			miner: Miner::new(),
+			chain: chain,
+		})
+	}
+
+	pub fn sealing_block(&self) -> &Mutex<Option<ClosedBlock>> {
+		self.miner.sealing_block(self.chain.deref())
+	}
+
+	pub fn submit_seal(&self, pow_hash: H256, seal: Vec<Bytes>) -> Result<(), Error> {
+		self.miner.submit_seal(self.chain.deref(), pow_hash, seal)
+	}
+
+	/// Set the author that we will seal blocks as.
+	pub fn set_author(&self, author: Address) {
+		self.miner.set_author(author);
+	}
+
+	/// Set the extra_data that we will seal blocks with.
+	pub fn set_extra_data(&self, extra_data: Bytes) {
+		self.miner.set_extra_data(extra_data);
+	}
+
+	pub fn import_transactions(&self, transactions: Vec<SignedTransaction>) {
+		let chain = self.chain.deref();
+		let fetch_latest_nonce = |a : &Address| chain.nonce(a);
+
+		self.miner.import_transactions(transactions, fetch_latest_nonce);
+	}
+
+	pub fn chain_new_blocks(&self, good: &[H256], bad: &[H256], retracted: &[H256]) {
+		let mut chain = self.chain.deref();
+		self.miner.chain_new_blocks(chain, good, bad, retracted);
+	}
+}
--- a/miner/src/miner.rs
+++ b/miner/src/miner.rs
@ -0,0 +1,149 @@
+// 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/>.
+
+use util::*;
+use std::sync::atomic::AtomicBool;
+use rayon::prelude::*;
+use ethcore::views::{HeaderView, BlockView};
+use ethcore::header::{BlockNumber, Header as BlockHeader};
+use ethcore::client::{BlockChainClient, BlockStatus, BlockId, BlockChainInfo};
+use ethcore::block::*;
+use ethcore::error::*;
+use ethcore::transaction::SignedTransaction;
+use transaction_queue::TransactionQueue;
+
+pub struct Miner {
+	/// Transactions Queue
+	transaction_queue: Mutex<TransactionQueue>,
+
+	// for sealing...
+	sealing_enabled: AtomicBool,
+	sealing_block: Mutex<Option<ClosedBlock>>,
+	author: RwLock<Address>,
+	extra_data: RwLock<Bytes>,
+}
+
+impl Miner {
+	pub fn new() -> Miner {
+		Miner {
+			transaction_queue: Mutex::new(TransactionQueue::new()),
+			sealing_enabled: AtomicBool::new(false),
+			sealing_block: Mutex::new(None),
+			author: RwLock::new(Address::new()),
+			extra_data: RwLock::new(Vec::new()),
+		}
+	}
+
+	pub fn import_transactions<T>(&self, transactions: Vec<SignedTransaction>, fetch_nonce: T)
+		where T: Fn(&Address) -> U256 {
+		let mut transaction_queue = self.transaction_queue.lock().unwrap();
+		transaction_queue.add_all(transactions, fetch_nonce);
+	}
+
+	/// Get the author that we will seal blocks as.
+	pub fn author(&self) -> Address {
+		self.author.read().unwrap().clone()
+	}
+
+	/// Set the author that we will seal blocks as.
+	pub fn set_author(&self, author: Address) {
+		*self.author.write().unwrap() = author;
+	}
+
+	/// Get the extra_data that we will seal blocks wuth.
+	pub fn extra_data(&self) -> Bytes {
+		self.extra_data.read().unwrap().clone()
+	}
+
+	/// Set the extra_data that we will seal blocks with.
+	pub fn set_extra_data(&self, extra_data: Bytes) {
+		*self.extra_data.write().unwrap() = extra_data;
+	}
+
+	/// New chain head event. Restart mining operation.
+	fn prepare_sealing(&self, chain: &BlockChainClient) {
+		let b = chain.prepare_sealing(self.author.read().unwrap().clone(), self.extra_data.read().unwrap().clone());
+		*self.sealing_block.lock().unwrap() = b;
+	}
+
+	/// Grab the `ClosedBlock` that we want to be sealed. Comes as a mutex that you have to lock.
+	pub fn sealing_block(&self, chain: &BlockChainClient) -> &Mutex<Option<ClosedBlock>> {
+		if self.sealing_block.lock().unwrap().is_none() {
+			self.sealing_enabled.store(true, atomic::Ordering::Relaxed);
+			// TODO: Above should be on a timer that resets after two blocks have arrived without being asked for.
+			self.prepare_sealing(chain);
+		}
+		&self.sealing_block
+	}
+
+	/// Submit `seal` as a valid solution for the header of `pow_hash`.
+	/// Will check the seal, but not actually insert the block into the chain.
+	pub fn submit_seal(&self, chain: &BlockChainClient, pow_hash: H256, seal: Vec<Bytes>) -> Result<(), Error> {
+		let mut maybe_b = self.sealing_block.lock().unwrap();
+		match *maybe_b {
+			Some(ref b) if b.hash() == pow_hash => {}
+			_ => { return Err(Error::PowHashInvalid); }
+		}
+
+		let b = maybe_b.take();
+		match chain.try_seal(b.unwrap(), seal) {
+			Err(old) => {
+				*maybe_b = Some(old);
+				Err(Error::PowInvalid)
+			}
+			Ok(sealed) => {
+				// TODO: commit DB from `sealed.drain` and make a VerifiedBlock to skip running the transactions twice.
+				try!(chain.import_block(sealed.rlp_bytes()));
+				Ok(())
+			}
+		}
+	}
+
+	/// called when block is imported to chain, updates transactions queue and propagates the blocks
+	pub fn chain_new_blocks(&self, chain: &BlockChainClient, good: &[H256], bad: &[H256], _retracted: &[H256]) {
+		fn fetch_transactions(chain: &BlockChainClient, hash: &H256) -> Vec<SignedTransaction> {
+			let block = chain
+				.block(BlockId::Hash(hash.clone()))
+				// Client should send message after commit to db and inserting to chain.
+				.expect("Expected in-chain blocks.");
+			let block = BlockView::new(&block);
+			block.transactions()
+		}
+
+		{
+			let good = good.par_iter().map(|h| fetch_transactions(chain, h));
+			let bad = bad.par_iter().map(|h| fetch_transactions(chain, h));
+
+			good.for_each(|txs| {
+				let mut transaction_queue = self.transaction_queue.lock().unwrap();
+				let hashes = txs.iter().map(|tx| tx.hash()).collect::<Vec<H256>>();
+				transaction_queue.remove_all(&hashes, |a| chain.nonce(a));
+			});
+			bad.for_each(|txs| {
+				// populate sender
+				for tx in &txs {
+					let _sender = tx.sender();
+				}
+				let mut transaction_queue = self.transaction_queue.lock().unwrap();
+				transaction_queue.add_all(txs, |a| chain.nonce(a));
+			});
+		}
+
+		if self.sealing_enabled.load(atomic::Ordering::Relaxed) {
+			self.prepare_sealing(chain);
+		}
+	}
+}
--- a/miner/src/transaction_queue.rs
+++ b/miner/src/transaction_queue.rs
--- a/parity/main.rs
+++ b/parity/main.rs
@ -24,6 +24,7 @@ extern crate rustc_serialize;
 extern crate ethcore_util as util;
 extern crate ethcore;
 extern crate ethsync;
+extern crate ethminer;
 #[macro_use]
 extern crate log as rlog;
 extern crate env_logger;
@ -49,6 +50,7 @@ use ethcore::client::*;
 use ethcore::service::{ClientService, NetSyncMessage};
 use ethcore::ethereum;
 use ethsync::{EthSync, SyncConfig};
+use ethminer::{EthMiner};
 use docopt::Docopt;
 use daemonize::Daemonize;
 use number_prefix::{binary_prefix, Standalone, Prefixed};
@ -79,6 +81,7 @@ Protocol Options:
  --networkid INDEX        Override the network identifier from the chain we are on.
  --archive                Client should not prune the state/storage trie.
  -d --datadir PATH        Specify the database & configuration directory path [default: $HOME/.parity]
+  --keys-path PATH         Specify the path for JSON key files to be found [default: $HOME/.web3/keys]
  --identity NAME          Specify your node's name.

 Networking Options:
@ -129,7 +132,7 @@ struct Args {
 	arg_enode: Vec<String>,
 	flag_chain: String,
 	flag_testnet: bool,
-	flag_db_path: String,
+	flag_datadir: String,
 	flag_networkid: Option<String>,
 	flag_identity: String,
 	flag_cache: Option<usize>,
@ -189,7 +192,7 @@ fn setup_log(init: &Option<String>) {
 }

 #[cfg(feature = "rpc")]
-fn setup_rpc_server(client: Arc<Client>, sync: Arc<EthSync>, url: &str, cors_domain: &str, apis: Vec<&str>) {
+fn setup_rpc_server(client: Arc<Client>, sync: Arc<EthSync>, miner: Arc<EthMiner>, url: &str, cors_domain: &str, apis: Vec<&str>) {
 	use rpc::v1::*;

 	let mut server = rpc::HttpServer::new(1);
@ -198,7 +201,7 @@ fn setup_rpc_server(client: Arc<Client>, sync: Arc<EthSync>, url: &str, cors_dom
 			"web3" => server.add_delegate(Web3Client::new().to_delegate()),
 			"net" => server.add_delegate(NetClient::new(&sync).to_delegate()),
 			"eth" => {
-				server.add_delegate(EthClient::new(&client, &sync).to_delegate());
+				server.add_delegate(EthClient::new(&client, &sync, &miner).to_delegate());
 				server.add_delegate(EthFilterClient::new(&client).to_delegate());
 			}
 			_ => {
@ -238,7 +241,7 @@ impl Configuration {
 	}

 	fn path(&self) -> String {
-		self.args.flag_db_path.replace("$HOME", env::home_dir().unwrap().to_str().unwrap())
+		self.args.flag_datadir.replace("$HOME", env::home_dir().unwrap().to_str().unwrap())
 	}

 	fn author(&self) -> Address {
@ -323,6 +326,32 @@ impl Configuration {
 		ret
 	}

+	fn client_config(&self) -> ClientConfig {
+		let mut client_config = ClientConfig::default();
+		match self.args.flag_cache {
+			Some(mb) => {
+				client_config.blockchain.max_cache_size = mb * 1024 * 1024;
+				client_config.blockchain.pref_cache_size = client_config.blockchain.max_cache_size / 2;
+			}
+			None => {
+				client_config.blockchain.pref_cache_size = self.args.flag_cache_pref_size;
+				client_config.blockchain.max_cache_size = self.args.flag_cache_max_size;
+			}
+		}
+		client_config.prefer_journal = !self.args.flag_archive;
+		client_config.name = self.args.flag_identity.clone();
+		client_config.queue.max_mem_use = self.args.flag_queue_max_size;
+		client_config
+	}
+
+	fn sync_config(&self, spec: &Spec) -> SyncConfig {
+		let mut sync_config = SyncConfig::default();
+		sync_config.network_id = self.args.flag_networkid.as_ref().map(|id| {
+			U256::from_str(id).unwrap_or_else(|_| die!("{}: Invalid index given with --networkid", id))
+		}).unwrap_or(spec.network_id());
+		sync_config
+	}
+
 	fn execute(&self) {
 		if self.args.flag_version {
 			print_version();
@ -346,31 +375,19 @@ impl Configuration {

 		let spec = self.spec();
 		let net_settings = self.net_settings(&spec);
-		let mut sync_config = SyncConfig::default();
-		sync_config.network_id = self.args.flag_networkid.as_ref().map(|id| U256::from_str(id).unwrap_or_else(|_| die!("{}: Invalid index given with --networkid", id))).unwrap_or(spec.network_id());
+		let sync_config = self.sync_config(&spec);

 		// Build client
-		let mut client_config = ClientConfig::default();
-		match self.args.flag_cache {
-			Some(mb) => {
-				client_config.blockchain.max_cache_size = mb * 1024 * 1024;
-				client_config.blockchain.pref_cache_size = client_config.blockchain.max_cache_size / 2;
-			}
-			None => {
-				client_config.blockchain.pref_cache_size = self.args.flag_cache_pref_size;
-				client_config.blockchain.max_cache_size = self.args.flag_cache_max_size;
-			}
-		}
-		client_config.prefer_journal = !self.args.flag_archive;
-		client_config.name = self.args.flag_identity.clone();
-		client_config.queue.max_mem_use = self.args.flag_queue_max_size;
-		let mut service = ClientService::start(client_config, spec, net_settings, &Path::new(&self.path())).unwrap();
-		let client = service.client().clone();
-		client.set_author(self.author());
-		client.set_extra_data(self.extra_data());
+		let mut service = ClientService::start(self.client_config(), spec, net_settings, &Path::new(&self.path())).unwrap();
+		let client = service.client();
+
+		// Miner
+		let miner = EthMiner::new(client.clone());
+		miner.set_author(self.author());
+		miner.set_extra_data(self.extra_data());

 		// Sync
-		let sync = EthSync::register(service.network(), sync_config, client);
+		let sync = EthSync::register(service.network(), sync_config, client.clone(), miner.clone());

 		// Setup rpc
 		if self.args.flag_jsonrpc || self.args.flag_rpc {
@ -382,7 +399,7 @@ impl Configuration {
 			let cors = self.args.flag_rpccorsdomain.as_ref().unwrap_or(&self.args.flag_jsonrpc_cors);
 			// TODO: use this as the API list.
 			let apis = self.args.flag_rpcapi.as_ref().unwrap_or(&self.args.flag_jsonrpc_apis);
-			setup_rpc_server(service.client(), sync.clone(), &url, cors, apis.split(",").collect());
+			setup_rpc_server(service.client(), sync.clone(), miner.clone(), &url, cors, apis.split(",").collect());
 		}

 		// Register IO handler
--- a/rpc/Cargo.toml
+++ b/rpc/Cargo.toml
@ -18,6 +18,7 @@ ethcore-util = { path = "../util" }
 ethcore = { path = "../ethcore" }
 ethash = { path = "../ethash" }
 ethsync = { path = "../sync" }
+ethminer = { path = "../miner" }
 clippy = { version = "0.0.44", optional = true }
 rustc-serialize = "0.3"
 transient-hashmap = "0.1"
--- a/rpc/src/lib.rs
+++ b/rpc/src/lib.rs
@ -27,6 +27,7 @@ extern crate jsonrpc_http_server;
 extern crate ethcore_util as util;
 extern crate ethcore;
 extern crate ethsync;
+extern crate ethminer;
 extern crate transient_hashmap;

 use self::jsonrpc_core::{IoHandler, IoDelegate};
--- a/rpc/src/v1/impls/eth.rs
+++ b/rpc/src/v1/impls/eth.rs
@ -18,6 +18,7 @@
 use std::collections::HashMap;
 use std::sync::{Arc, Weak, Mutex, RwLock};
 use ethsync::{EthSync, SyncState};
+use ethminer::{EthMiner};
 use jsonrpc_core::*;
 use util::numbers::*;
 use util::sha3::*;
@ -36,15 +37,17 @@ use v1::helpers::{PollFilter, PollManager};
 pub struct EthClient {
 	client: Weak<Client>,
 	sync: Weak<EthSync>,
+	miner: Weak<EthMiner>,
 	hashrates: RwLock<HashMap<H256, u64>>,
 }

 impl EthClient {
 	/// Creates new EthClient.
-	pub fn new(client: &Arc<Client>, sync: &Arc<EthSync>) -> Self {
+	pub fn new(client: &Arc<Client>, sync: &Arc<EthSync>, miner: &Arc<EthMiner>) -> Self {
 		EthClient {
 			client: Arc::downgrade(client),
 			sync: Arc::downgrade(sync),
+			miner: Arc::downgrade(miner),
 			hashrates: RwLock::new(HashMap::new()),
 		}
 	}
@ -220,8 +223,8 @@ impl Eth for EthClient {
 	fn work(&self, params: Params) -> Result<Value, Error> {
 		match params {
 			Params::None => {
-				let c = take_weak!(self.client);
-				let u = c.sealing_block().lock().unwrap();
+				let miner = take_weak!(self.miner);
+				let u = miner.sealing_block().lock().unwrap();
 				match *u {
 					Some(ref b) => {
 						let pow_hash = b.hash();
@ -239,9 +242,9 @@ impl Eth for EthClient {
 	fn submit_work(&self, params: Params) -> Result<Value, Error> {
 		from_params::<(H64, H256, H256)>(params).and_then(|(nonce, pow_hash, mix_hash)| {
 //			trace!("Decoded: nonce={}, pow_hash={}, mix_hash={}", nonce, pow_hash, mix_hash);
-			let c = take_weak!(self.client);
+			let miner = take_weak!(self.miner);
 			let seal = vec![encode(&mix_hash).to_vec(), encode(&nonce).to_vec()];
-			let r = c.submit_seal(pow_hash, seal);
+			let r = miner.submit_seal(pow_hash, seal);
 			to_value(&r.is_ok())
 		})
 	}
--- a/sync/Cargo.toml
+++ b/sync/Cargo.toml
@ -10,15 +10,14 @@ authors = ["Ethcore <admin@ethcore.io"]
 [dependencies]
 ethcore-util = { path = "../util" }
 ethcore = { path = "../ethcore" }
+ethminer = { path = "../miner" }
 clippy = { version = "0.0.44", optional = true }
 log = "0.3"
 env_logger = "0.3"
 time = "0.1.34"
 rand = "0.3.13"
 heapsize = "0.3"
-rustc-serialize = "0.3"
-rayon = "0.3.1"

 [features]
 default = []
-dev = ["clippy", "ethcore/dev", "ethcore-util/dev"]
+dev = ["clippy", "ethcore/dev", "ethcore-util/dev", "ethminer/dev"]
--- a/sync/src/chain.rs
+++ b/sync/src/chain.rs
@ -30,17 +30,16 @@
 ///

 use util::*;
-use rayon::prelude::*;
 use std::mem::{replace};
 use ethcore::views::{HeaderView, BlockView};
 use ethcore::header::{BlockNumber, Header as BlockHeader};
 use ethcore::client::{BlockChainClient, BlockStatus, BlockId, BlockChainInfo};
 use range_collection::{RangeCollection, ToUsize, FromUsize};
 use ethcore::error::*;
-use ethcore::block::Block;
 use ethcore::transaction::SignedTransaction;
+use ethcore::block::Block;
+use ethminer::EthMiner;
 use io::SyncIo;
-use transaction_queue::TransactionQueue;
 use time;
 use super::SyncConfig;

@ -212,15 +211,15 @@ pub struct ChainSync {
 	max_download_ahead_blocks: usize,
 	/// Network ID
 	network_id: U256,
-	/// Transactions Queue
-	transaction_queue: Mutex<TransactionQueue>,
+	/// Miner
+	miner: Arc<EthMiner>,
 }

 type RlpResponseResult = Result<Option<(PacketId, RlpStream)>, PacketDecodeError>;

 impl ChainSync {
 	/// Create a new instance of syncing strategy.
-	pub fn new(config: SyncConfig) -> ChainSync {
+	pub fn new(config: SyncConfig, miner: Arc<EthMiner>) -> ChainSync {
 		ChainSync {
 			state: SyncState::NotSynced,
 			starting_block: 0,
@ -239,7 +238,7 @@ impl ChainSync {
 			last_sent_block_number: 0,
 			max_download_ahead_blocks: max(MAX_HEADERS_TO_REQUEST, config.max_download_ahead_blocks),
 			network_id: config.network_id,
-			transaction_queue: Mutex::new(TransactionQueue::new()),
+			miner: miner,
 		}
 	}

@ -298,7 +297,6 @@ impl ChainSync {
 		self.starting_block = 0;
 		self.highest_block = None;
 		self.have_common_block = false;
-		self.transaction_queue.lock().unwrap().clear();
 		self.starting_block = io.chain().chain_info().best_block_number;
 		self.state = SyncState::NotSynced;
 	}
@ -927,16 +925,15 @@ impl ChainSync {
 	}
 	/// Called when peer sends us new transactions
 	fn on_peer_transactions(&mut self, io: &mut SyncIo, peer_id: PeerId, r: &UntrustedRlp) -> Result<(), PacketDecodeError> {
-		let chain = io.chain();
 		let item_count = r.item_count();
 		trace!(target: "sync", "{} -> Transactions ({} entries)", peer_id, item_count);
-		let fetch_latest_nonce = |a : &Address| chain.nonce(a);

-		let mut transaction_queue = self.transaction_queue.lock().unwrap();
+		let mut transactions = Vec::with_capacity(item_count);
 		for i in 0..item_count {
 			let tx: SignedTransaction = try!(r.val_at(i));
-			transaction_queue.add(tx, &fetch_latest_nonce);
+			transactions.push(tx);
 		}
+		self.miner.import_transactions(transactions);
 		Ok(())
 	}

@ -1263,38 +1260,9 @@ impl ChainSync {
 		self.check_resume(io);
 	}

-	/// called when block is imported to chain, updates transactions queue and propagates the blocks
-	pub fn chain_new_blocks(&mut self, io: &mut SyncIo, good: &[H256], bad: &[H256], _retracted: &[H256]) {
-		fn fetch_transactions(chain: &BlockChainClient, hash: &H256) -> Vec<SignedTransaction> {
-			let block = chain
-				.block(BlockId::Hash(hash.clone()))
-				// Client should send message after commit to db and inserting to chain.
-				.expect("Expected in-chain blocks.");
-			let block = BlockView::new(&block);
-			block.transactions()
-		}
-
-
-		{
-			let chain = io.chain();
-			let good = good.par_iter().map(|h| fetch_transactions(chain, h));
-			let bad = bad.par_iter().map(|h| fetch_transactions(chain, h));
-
-			good.for_each(|txs| {
-				let mut transaction_queue = self.transaction_queue.lock().unwrap();
-				let hashes = txs.iter().map(|tx| tx.hash()).collect::<Vec<H256>>();
-				transaction_queue.remove_all(&hashes, |a| chain.nonce(a));
-			});
-			bad.for_each(|txs| {
-				// populate sender
-				for tx in &txs {
-					let _sender = tx.sender();
-				}
-				let mut transaction_queue = self.transaction_queue.lock().unwrap();
-				transaction_queue.add_all(txs, |a| chain.nonce(a));
-			});
-		}
-
+	pub fn chain_new_blocks(&mut self, io: &mut SyncIo, good: &[H256], bad: &[H256], retracted: &[H256]) {
+		// notify miner
+		self.miner.chain_new_blocks(good, bad, retracted);
 		// Propagate latests blocks
 		self.propagate_latest_blocks(io);
 		// TODO [todr] propagate transactions?
--- a/sync/src/lib.rs
+++ b/sync/src/lib.rs
@ -51,27 +51,27 @@ extern crate log;
 #[macro_use]
 extern crate ethcore_util as util;
 extern crate ethcore;
+extern crate ethminer;
 extern crate env_logger;
 extern crate time;
 extern crate rand;
-extern crate rayon;
 #[macro_use]
 extern crate heapsize;

 use std::ops::*;
 use std::sync::*;
-use ethcore::client::Client;
 use util::network::{NetworkProtocolHandler, NetworkService, NetworkContext, PeerId};
 use util::TimerToken;
 use util::{U256, ONE_U256};
-use chain::ChainSync;
+use ethcore::client::Client;
 use ethcore::service::SyncMessage;
+use ethminer::EthMiner;
 use io::NetSyncIo;
+use chain::ChainSync;

 mod chain;
 mod io;
 mod range_collection;
-mod transaction_queue;

 #[cfg(test)]
 mod tests;
@ -105,10 +105,10 @@ pub use self::chain::{SyncStatus, SyncState};

 impl EthSync {
 	/// Creates and register protocol with the network service
-	pub fn register(service: &mut NetworkService<SyncMessage>, config: SyncConfig, chain: Arc<Client>) -> Arc<EthSync> {
+	pub fn register(service: &mut NetworkService<SyncMessage>, config: SyncConfig, chain: Arc<Client>, miner: Arc<EthMiner>) -> Arc<EthSync> {
 		let sync = Arc::new(EthSync {
 			chain: chain,
-			sync: RwLock::new(ChainSync::new(config)),
+			sync: RwLock::new(ChainSync::new(config, miner)),
 		});
 		service.register_protocol(sync.clone(), "eth", &[62u8, 63u8]).expect("Error registering eth protocol handler");
 		sync
@ -154,7 +154,7 @@ impl NetworkProtocolHandler<SyncMessage> for EthSync {

 	fn message(&self, io: &NetworkContext<SyncMessage>, message: &SyncMessage) {
 		match *message {
-			SyncMessage::NewChainBlocks { ref good, ref bad, ref retracted } => {
+			SyncMessage::NewChainBlocks { ref good, ref bad, ref retracted} => {
 				let mut sync_io = NetSyncIo::new(io, self.chain.deref());
 				self.sync.write().unwrap().chain_new_blocks(&mut sync_io, good, bad, retracted);
 			},