Snapshot fixes and optimizations (#2863)

ethcore/src/snapshot/mod.rs

@@ -38,6 +38,7 @@ use util::kvdb::Database;
 use util::trie::{TrieDB, TrieDBMut, Trie, TrieMut};
 use util::sha3::SHA3_NULL_RLP;
 use rlp::{RlpStream, Stream, UntrustedRlp, View};
+use bloom_journal::Bloom;
 
 use self::account::Account;
 use self::block::AbridgedBlock;
@@ -390,6 +391,7 @@ pub struct StateRebuilder {
 	state_root: H256,
 	code_map: HashMap<H256, Bytes>, // maps code hashes to code itself.
 	missing_code: HashMap<H256, Vec<H256>>, // maps code hashes to lists of accounts missing that code.
+	bloom: Bloom,
 }
 
 impl StateRebuilder {
@@ -400,6 +402,7 @@ impl StateRebuilder {
 			state_root: SHA3_NULL_RLP,
 			code_map: HashMap::new(),
 			missing_code: HashMap::new(),
+			bloom: StateDB::load_bloom(&*db),
 		}
 	}
 
@@ -462,9 +465,6 @@ impl StateRebuilder {
 
 		let backing = self.db.backing().clone();
 
-		// bloom has to be updated
-		let mut bloom = StateDB::load_bloom(&backing);
-
 		// batch trie writes
 		{
 			let mut account_trie = if self.state_root != SHA3_NULL_RLP {
@@ -475,17 +475,17 @@ impl StateRebuilder {
 
 			for (hash, thin_rlp) in pairs {
 				if &thin_rlp[..] != &empty_rlp[..] {
-					bloom.set(&*hash);
+					self.bloom.set(&*hash);
 				}
 				try!(account_trie.insert(&hash, &thin_rlp));
 			}
 		}
 
-		let bloom_journal = bloom.drain_journal();
+		let bloom_journal = self.bloom.drain_journal();
 		let mut batch = backing.transaction();
 		try!(StateDB::commit_bloom(&mut batch, bloom_journal));
 		try!(self.db.inject(&mut batch));
-		try!(backing.write(batch).map_err(::util::UtilError::SimpleString));
+		backing.write_buffered(batch);
 		trace!(target: "snapshot", "current state root: {:?}", self.state_root);
 		Ok(())
 	}
@@ -628,7 +628,7 @@ impl BlockRebuilder {
 			} else {
 				self.chain.insert_unordered_block(&mut batch, &block_bytes, receipts, None, is_best, false);
 			}
-			self.db.write(batch).expect("Error writing to the DB");
+			self.db.write_buffered(batch);
 			self.chain.commit();
 
 			parent_hash = BlockView::new(&block_bytes).hash();

ethcore/src/snapshot/service.rs

@@ -74,6 +74,7 @@ struct Restoration {
 	snappy_buffer: Bytes,
 	final_state_root: H256,
 	guard: Guard,
+	db: Arc<Database>,
 }
 
 struct RestorationParams<'a> {
@@ -105,12 +106,13 @@ impl Restoration {
 			manifest: manifest,
 			state_chunks_left: state_chunks,
 			block_chunks_left: block_chunks,
-			state: StateRebuilder::new(raw_db, params.pruning),
+			state: StateRebuilder::new(raw_db.clone(), params.pruning),
 			blocks: blocks,
 			writer: params.writer,
 			snappy_buffer: Vec::new(),
 			final_state_root: root,
 			guard: params.guard,
+			db: raw_db,
 		})
 	}
 
@@ -467,24 +469,25 @@ impl Service {
 	/// Feed a chunk of either kind. no-op if no restoration or status is wrong.
 	fn feed_chunk(&self, hash: H256, chunk: &[u8], is_state: bool) -> Result<(), Error> {
 		// TODO: be able to process block chunks and state chunks at same time?
+		let (result, db) = {
 			let mut restoration = self.restoration.lock();
 
 			match self.status() {
-			RestorationStatus::Inactive | RestorationStatus::Failed => Ok(()),
+				RestorationStatus::Inactive | RestorationStatus::Failed => return Ok(()),
 				RestorationStatus::Ongoing { .. } => {
-				let res = {
+					let (res, db) = {
 						let rest = match *restoration {
 							Some(ref mut r) => r,
 							None => return Ok(()),
 						};
 
-					match is_state {
+						(match is_state {
 							true => rest.feed_state(hash, chunk),
 							false => rest.feed_blocks(hash, chunk, &*self.engine),
-					}.map(|_| rest.is_done())
+						}.map(|_| rest.is_done()), rest.db.clone())
 					};
 
-				match res {
+					let res = match res {
 						Ok(is_done) => {
 							match is_state {
 								true => self.state_chunks.fetch_add(1, Ordering::SeqCst),
@@ -492,14 +495,20 @@ impl Service {
 							};
 
 							match is_done {
-							true => self.finalize_restoration(&mut *restoration),
+								true => {
+									try!(db.flush().map_err(::util::UtilError::SimpleString));
+									self.finalize_restoration(&mut *restoration)
+								},
 								false => Ok(())
 							}
 						}
 						other => other.map(drop),
+					};
+					(res, db)
 				}
 			}
-		}
+		};
+		result.and_then(|_| db.flush().map_err(|e| ::util::UtilError::SimpleString(e).into()))
 	}
 
 	/// Feed a state chunk to be processed synchronously.
@@ -549,8 +558,9 @@ impl SnapshotService for Service {
 	}
 
 	fn begin_restore(&self, manifest: ManifestData) {
-		self.io_channel.send(ClientIoMessage::BeginRestoration(manifest))
-			.expect("snapshot service and io service are kept alive by client service; qed");
+		if let Err(e) = self.io_channel.send(ClientIoMessage::BeginRestoration(manifest)) {
+			trace!("Error sending snapshot service message: {:?}", e);
+		}
 	}
 
 	fn abort_restore(&self) {
@@ -559,13 +569,15 @@ impl SnapshotService for Service {
 	}
 
 	fn restore_state_chunk(&self, hash: H256, chunk: Bytes) {
-		self.io_channel.send(ClientIoMessage::FeedStateChunk(hash, chunk))
-			.expect("snapshot service and io service are kept alive by client service; qed");
+		if let Err(e) = self.io_channel.send(ClientIoMessage::FeedStateChunk(hash, chunk)) {
+			trace!("Error sending snapshot service message: {:?}", e);
+		}
 	}
 
 	fn restore_block_chunk(&self, hash: H256, chunk: Bytes) {
-		self.io_channel.send(ClientIoMessage::FeedBlockChunk(hash, chunk))
-			.expect("snapshot service and io service are kept alive by client service; qed");
+		if let Err(e) = self.io_channel.send(ClientIoMessage::FeedBlockChunk(hash, chunk)) {
+			trace!("Error sending snapshot service message: {:?}", e);
+		}
 	}
 }
 

sync/src/chain.rs

@@ -1253,7 +1253,12 @@ impl ChainSync {
 			}
 			peer.asking = asking;
 			peer.ask_time = time::precise_time_s();
-			if let Err(e) = sync.send(peer_id, packet_id, packet) {
+			let result = if packet_id >= ETH_PACKET_COUNT {
+				sync.send_protocol(WARP_SYNC_PROTOCOL_ID, peer_id, packet_id, packet)
+			} else {
+				sync.send(peer_id, packet_id, packet)
+			};
+			if let Err(e) = result {
 				debug!(target:"sync", "Error sending request: {:?}", e);
 				sync.disable_peer(peer_id);
 			}
@@ -1270,8 +1275,9 @@ 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> {
-		// accepting transactions once only fully synced
-		if !io.is_chain_queue_empty() {
+		// Accept transactions only when fully synced
+		if !io.is_chain_queue_empty() || self.state != SyncState::Idle || self.state != SyncState::NewBlocks {
+			trace!(target: "sync", "{} Ignoring transactions while syncing", peer_id);
 			return Ok(());
 		}
 		if !self.peers.get(&peer_id).map_or(false, |p| p.can_sync()) {
@@ -1570,7 +1576,7 @@ impl ChainSync {
 			SNAPSHOT_MANIFEST_PACKET => self.on_snapshot_manifest(io, peer, &rlp),
 			SNAPSHOT_DATA_PACKET => self.on_snapshot_data(io, peer, &rlp),
 			_ => {
-				debug!(target: "sync", "Unknown packet {}", packet_id);
+				debug!(target: "sync", "{}: Unknown packet {}", peer, packet_id);
 				Ok(())
 			}
 		};

sync/src/sync_io.rs

@@ -34,6 +34,8 @@ pub trait SyncIo {
 	fn respond(&mut self, packet_id: PacketId, data: Vec<u8>) -> Result<(), NetworkError>;
 	/// Send a packet to a peer.
 	fn send(&mut self, peer_id: PeerId, packet_id: PacketId, data: Vec<u8>) -> Result<(), NetworkError>;
+	/// Send a packet to a peer using specified protocol.
+	fn send_protocol(&mut self, protocol: ProtocolId, peer_id: PeerId, packet_id: PacketId, data: Vec<u8>) -> Result<(), NetworkError>;
 	/// Get the blockchain
 	fn chain(&self) -> &BlockChainClient;
 	/// Get the snapshot service.
@@ -98,6 +100,10 @@ impl<'s, 'h> SyncIo for NetSyncIo<'s, 'h> {
 		self.network.send(peer_id, packet_id, data)
 	}
 
+	fn send_protocol(&mut self, protocol: ProtocolId, peer_id: PeerId, packet_id: PacketId, data: Vec<u8>) -> Result<(), NetworkError>{
+		self.network.send_protocol(protocol, peer_id, packet_id, data)
+	}
+
 	fn chain(&self) -> &BlockChainClient {
 		self.chain
 	}

sync/src/tests/helpers.rs

@@ -78,6 +78,10 @@ impl<'p> SyncIo for TestIo<'p> {
 		Ok(())
 	}
 
+	fn send_protocol(&mut self, _protocol: ProtocolId, peer_id: PeerId, packet_id: PacketId, data: Vec<u8>) -> Result<(), NetworkError> {
+		self.send(peer_id, packet_id, data)
+	}
+
 	fn chain(&self) -> &BlockChainClient {
 		self.chain
 	}

util/network/src/host.rs

@@ -241,9 +241,14 @@ impl<'s> NetworkContext<'s> {
 
 	/// Send a packet over the network to another peer.
 	pub fn send(&self, peer: PeerId, packet_id: PacketId, data: Vec<u8>) -> Result<(), NetworkError> {
+		self.send_protocol(self.protocol, peer, packet_id, data)
+	}
+
+	/// Send a packet over the network to another peer using specified protocol.
+	pub fn send_protocol(&self, protocol: ProtocolId, peer: PeerId, packet_id: PacketId, data: Vec<u8>) -> Result<(), NetworkError> {
 		let session = self.resolve_session(peer);
 		if let Some(session) = session {
-			try!(session.lock().send_packet(self.io, self.protocol, packet_id as u8, &data));
+			try!(session.lock().send_packet(self.io, protocol, packet_id as u8, &data));
 		} else  {
 			trace!(target: "network", "Send: Peer no longer exist")
 		}
@@ -911,7 +916,7 @@ impl Host {
 		}
 	}
 
-	fn update_nodes(&self, io: &IoContext<NetworkIoMessage>, node_changes: TableUpdates) {
+	fn update_nodes(&self, _io: &IoContext<NetworkIoMessage>, node_changes: TableUpdates) {
 		let mut to_remove: Vec<PeerId> = Vec::new();
 		{
 			let sessions = self.sessions.write();
@@ -926,7 +931,6 @@ impl Host {
 		}
 		for i in to_remove {
 			trace!(target: "network", "Removed from node table: {}", i);
-			self.kill_connection(i, io, false);
 		}
 		self.nodes.write().update(node_changes, &*self.reserved_nodes.read());
 	}

util/network/src/session.rs

@@ -395,7 +395,7 @@ impl Session {
 			PACKET_PEERS => Ok(SessionData::None),
 			PACKET_USER ... PACKET_LAST => {
 				let mut i = 0usize;
-				while packet_id < self.info.capabilities[i].id_offset {
+				while packet_id > self.info.capabilities[i].id_offset + self.info.capabilities[i].packet_count {
 					i += 1;
 					if i == self.info.capabilities.len() {
 						debug!(target: "network", "Unknown packet: {:?}", packet_id);
@@ -469,7 +469,7 @@ impl Session {
 			offset += caps[i].packet_count;
 			i += 1;
 		}
-		trace!(target: "network", "Hello: {} v{} {} {:?}", client_version, protocol, id, caps);
+		debug!(target: "network", "Hello: {} v{} {} {:?}", client_version, protocol, id, caps);
 		self.info.protocol_version = protocol;
 		self.info.client_version = client_version;
 		self.info.capabilities = caps;

util/src/journaldb/overlayrecentdb.rs

@@ -348,13 +348,13 @@ impl JournalDB for OverlayRecentDB {
 			match rc {
 				0 => {}
 				1 => {
-					if try!(self.backing.get(self.column, &key)).is_some() {
+					if cfg!(debug_assertions) && try!(self.backing.get(self.column, &key)).is_some() {
 						return Err(BaseDataError::AlreadyExists(key).into());
 					}
 					batch.put(self.column, &key, &value)
 				}
 				-1 => {
-					if try!(self.backing.get(self.column, &key)).is_none() {
+					if cfg!(debug_assertions) && try!(self.backing.get(self.column, &key)).is_none() {
 						return Err(BaseDataError::NegativelyReferencedHash(key).into());
 					}
 					batch.delete(self.column, &key)