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getting old one

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This commit is contained in:
Nikolay Volf 2016-02-03 23:05:04 +03:00
parent 99a8217bc4
commit edd41ac574
1 changed files with 56 additions and 82 deletions
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138
sync/src/chain.rs
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@ -15,14 +15,13 @@
use util::*;
use std::mem::{replace};
use ethcore::views::{HeaderView};
use ethcore::header::{BlockNumber, Header as BlockHeader};
use ethcore::client::{BlockChainClient, BlockStatus};
use range_collection::{RangeCollection, ToUsize, FromUsize};
use ethcore::error::*;
use ethcore::block::Block;
use io::SyncIo;
use time;
use views::{HeaderView};
use header::{BlockNumber, Header as BlockHeader};
use client::{BlockChainClient, BlockStatus};
use sync::range_collection::{RangeCollection, ToUsize, FromUsize};
use error::*;
use sync::io::SyncIo;
use std::option::Option;
impl ToUsize for BlockNumber {
fn to_usize(&self) -> usize {
@ -62,8 +61,6 @@ const RECEIPTS_PACKET: u8 = 0x10;
const NETWORK_ID: U256 = ONE_U256; //TODO: get this from parent
const CONNECTION_TIMEOUT_SEC: f64 = 30f64;
struct Header {
/// Header data
data: Bytes,
@ -81,7 +78,7 @@ struct HeaderId {
}
#[derive(Copy, Clone, Eq, PartialEq, Debug)]
/// Sync state
/// Sync state
pub enum SyncState {
/// Initial chain sync has not started yet
NotSynced,
@ -103,14 +100,14 @@ pub struct SyncStatus {
pub protocol_version: u8,
/// BlockChain height for the moment the sync started.
pub start_block_number: BlockNumber,
/// Last fully downloaded and imported block number.
pub last_imported_block_number: BlockNumber,
/// Highest block number in the download queue.
pub highest_block_number: BlockNumber,
/// Last fully downloaded and imported block number (if any).
pub last_imported_block_number: Option<BlockNumber>,
/// Highest block number in the download queue (if any).
pub highest_block_number: Option<BlockNumber>,
/// Total number of blocks for the sync process.
pub blocks_total: usize,
pub blocks_total: BlockNumber,
/// Number of blocks downloaded so far.
pub blocks_received: usize,
pub blocks_received: BlockNumber,
/// Total number of connected peers
pub num_peers: usize,
/// Total number of active peers
@ -131,7 +128,7 @@ struct PeerInfo {
protocol_version: u32,
/// Peer chain genesis hash
genesis: H256,
/// Peer network id
/// Peer network id
network_id: U256,
/// Peer best block hash
latest: H256,
@ -141,8 +138,6 @@ struct PeerInfo {
asking: PeerAsking,
/// A set of block numbers being requested
asking_blocks: Vec<BlockNumber>,
/// Request timestamp
ask_time: f64,
}
/// Blockchain sync handler.
@ -153,7 +148,7 @@ pub struct ChainSync {
/// Last block number for the start of sync
starting_block: BlockNumber,
/// Highest block number seen
highest_block: BlockNumber,
highest_block: Option<BlockNumber>,
/// Set of block header numbers being downloaded
downloading_headers: HashSet<BlockNumber>,
/// Set of block body numbers being downloaded
@ -167,9 +162,9 @@ pub struct ChainSync {
/// Used to map body to header
header_ids: HashMap<HeaderId, BlockNumber>,
/// Last impoted block number
last_imported_block: BlockNumber,
last_imported_block: Option<BlockNumber>,
/// Last impoted block hash
last_imported_hash: H256,
last_imported_hash: Option<H256>,
/// Syncing total difficulty
syncing_difficulty: U256,
/// True if common block for our and remote chain has been found
@ -183,15 +178,15 @@ impl ChainSync {
ChainSync {
state: SyncState::NotSynced,
starting_block: 0,
highest_block: 0,
highest_block: None,
downloading_headers: HashSet::new(),
downloading_bodies: HashSet::new(),
headers: Vec::new(),
bodies: Vec::new(),
peers: HashMap::new(),
header_ids: HashMap::new(),
last_imported_block: 0,
last_imported_hash: H256::new(),
last_imported_block: None,
last_imported_hash: None,
syncing_difficulty: U256::from(0u64),
have_common_block: false,
}
@ -205,8 +200,8 @@ impl ChainSync {
start_block_number: self.starting_block,
last_imported_block_number: self.last_imported_block,
highest_block_number: self.highest_block,
blocks_received: (self.last_imported_block - self.starting_block) as usize,
blocks_total: (self.highest_block - self.starting_block) as usize,
blocks_received: match self.last_imported_block { None => 0, Some(x) => x - self.starting_block },
blocks_total: match self.highest_block { None => 0, Some(x) => x - self.starting_block },
num_peers: self.peers.len(),
num_active_peers: self.peers.values().filter(|p| p.asking != PeerAsking::Nothing).count(),
}
@ -235,10 +230,10 @@ impl ChainSync {
/// Restart sync
pub fn restart(&mut self, io: &mut SyncIo) {
self.reset();
self.last_imported_block = 0;
self.last_imported_hash = H256::new();
self.last_imported_block = None;
self.last_imported_hash = None;
self.starting_block = 0;
self.highest_block = 0;
self.highest_block = None;
self.have_common_block = false;
io.chain().clear_queue();
self.starting_block = io.chain().chain_info().best_block_number;
@ -255,11 +250,10 @@ impl ChainSync {
genesis: try!(r.val_at(4)),
asking: PeerAsking::Nothing,
asking_blocks: Vec::new(),
ask_time: 0f64,
};
trace!(target: "sync", "New peer {} (protocol: {}, network: {:?}, difficulty: {:?}, latest:{}, genesis:{})", peer_id, peer.protocol_version, peer.network_id, peer.difficulty, peer.latest, peer.genesis);
let chain_info = io.chain().chain_info();
if peer.genesis != chain_info.genesis_hash {
io.disable_peer(peer_id);
@ -300,25 +294,27 @@ impl ChainSync {
for i in 0..item_count {
let info: BlockHeader = try!(r.val_at(i));
let number = BlockNumber::from(info.number);
if number <= self.last_imported_block || self.headers.have_item(&number) {
if number <= self.current_base_block() || self.headers.have_item(&number) {
trace!(target: "sync", "Skipping existing block header");
continue;
}
if number > self.highest_block {
self.highest_block = number;
if self.highest_block == None || number > self.highest_block.unwrap() {
self.highest_block = Some(number);
}
let hash = info.hash();
match io.chain().block_status(&hash) {
BlockStatus::InChain => {
self.have_common_block = true;
self.last_imported_block = number;
self.last_imported_hash = hash.clone();
self.last_imported_block = Some(number);
self.last_imported_hash = Some(hash.clone());
trace!(target: "sync", "Found common header {} ({})", number, hash);
},
_ => {
if self.have_common_block {
//validate chain
if self.have_common_block && number == self.last_imported_block + 1 && info.parent_hash != self.last_imported_hash {
let base_hash = self.last_imported_hash.clone().unwrap();
if self.have_common_block && number == self.current_base_block() + 1 && info.parent_hash != base_hash {
// TODO: lower peer rating
debug!(target: "sync", "Mismatched block header {} {}", number, hash);
continue;
@ -414,8 +410,7 @@ impl ChainSync {
trace!(target: "sync", "{} -> NewBlock ({})", peer_id, h);
let header_view = HeaderView::new(header_rlp.as_raw());
// TODO: Decompose block and add to self.headers and self.bodies instead
let mut unknown = false;
if header_view.number() == From::from(self.last_imported_block + 1) {
if header_view.number() == From::from(self.current_base_block() + 1) {
match io.chain().import_block(block_rlp.as_raw().to_vec()) {
Err(ImportError::AlreadyInChain) => {
trace!(target: "sync", "New block already in chain {:?}", h);
@ -423,10 +418,6 @@ impl ChainSync {
Err(ImportError::AlreadyQueued) => {
trace!(target: "sync", "New block already queued {:?}", h);
},
Err(ImportError::UnknownParent) => {
unknown = true;
trace!(target: "sync", "New block with unknown parent {:?}", h);
},
Ok(_) => {
trace!(target: "sync", "New block queued {:?}", h);
},
@ -435,11 +426,8 @@ impl ChainSync {
io.disable_peer(peer_id);
}
};
}
else {
unknown = true;
}
if unknown {
else {
trace!(target: "sync", "New block unknown {:?}", h);
//TODO: handle too many unknown blocks
let difficulty: U256 = try!(r.val_at(1));
@ -456,7 +444,7 @@ impl ChainSync {
Ok(())
}
/// Handles NewHashes packet. Initiates headers download for any unknown hashes.
/// Handles NewHashes packet. Initiates headers download for any unknown hashes.
fn on_peer_new_hashes(&mut self, io: &mut SyncIo, peer_id: PeerId, r: &UntrustedRlp) -> Result<(), PacketDecodeError> {
if self.peers.get_mut(&peer_id).expect("ChainSync: unknown peer").asking != PeerAsking::Nothing {
trace!(target: "sync", "Ignoring new hashes since we're already downloading.");
@ -565,6 +553,10 @@ impl ChainSync {
}
}
fn current_base_block(&self) -> BlockNumber {
match self.last_imported_block { None => 0, Some(x) => x }
}
/// Find some headers or blocks to download for a peer.
fn request_blocks(&mut self, io: &mut SyncIo, peer_id: PeerId) {
self.clear_peer_download(peer_id);
@ -578,7 +570,7 @@ impl ChainSync {
let mut needed_bodies: Vec<H256> = Vec::new();
let mut needed_numbers: Vec<BlockNumber> = Vec::new();
if self.have_common_block && !self.headers.is_empty() && self.headers.range_iter().next().unwrap().0 == self.last_imported_block + 1 {
if self.have_common_block && !self.headers.is_empty() && self.headers.range_iter().next().unwrap().0 == self.current_base_block() + 1 {
for (start, ref items) in self.headers.range_iter() {
if needed_bodies.len() > MAX_BODIES_TO_REQUEST {
break;
@ -611,12 +603,12 @@ impl ChainSync {
}
if start == 0 {
self.have_common_block = true; //reached genesis
self.last_imported_hash = chain_info.genesis_hash;
self.last_imported_hash = Some(chain_info.genesis_hash);
}
}
if self.have_common_block {
let mut headers: Vec<BlockNumber> = Vec::new();
let mut prev = self.last_imported_block + 1;
let mut prev = self.current_base_block() + 1;
for (next, ref items) in self.headers.range_iter() {
if !headers.is_empty() {
break;
@ -671,7 +663,7 @@ impl ChainSync {
{
let headers = self.headers.range_iter().next().unwrap();
let bodies = self.bodies.range_iter().next().unwrap();
if headers.0 != bodies.0 || headers.0 != self.last_imported_block + 1 {
if headers.0 != bodies.0 || headers.0 != self.current_base_block() + 1 {
return;
}
@ -684,27 +676,21 @@ impl ChainSync {
block_rlp.append_raw(body.at(0).as_raw(), 1);
block_rlp.append_raw(body.at(1).as_raw(), 1);
let h = &headers.1[i].hash;
// Perform basic block verification
if !Block::is_good(block_rlp.as_raw()) {
debug!(target: "sync", "Bad block rlp {:?} : {:?}", h, block_rlp.as_raw());
restart = true;
break;
}
match io.chain().import_block(block_rlp.out()) {
Err(ImportError::AlreadyInChain) => {
trace!(target: "sync", "Block already in chain {:?}", h);
self.last_imported_block = headers.0 + i as BlockNumber;
self.last_imported_hash = h.clone();
self.last_imported_block = Some(headers.0 + i as BlockNumber);
self.last_imported_hash = Some(h.clone());
},
Err(ImportError::AlreadyQueued) => {
trace!(target: "sync", "Block already queued {:?}", h);
self.last_imported_block = headers.0 + i as BlockNumber;
self.last_imported_hash = h.clone();
self.last_imported_block = Some(headers.0 + i as BlockNumber);
self.last_imported_hash = Some(h.clone());
},
Ok(_) => {
trace!(target: "sync", "Block queued {:?}", h);
self.last_imported_block = headers.0 + i as BlockNumber;
self.last_imported_hash = h.clone();
self.last_imported_block = Some(headers.0 + i as BlockNumber);
self.last_imported_hash = Some(h.clone());
imported += 1;
},
Err(e) => {
@ -721,8 +707,8 @@ impl ChainSync {
return;
}
self.headers.remove_head(&(self.last_imported_block + 1));
self.bodies.remove_head(&(self.last_imported_block + 1));
self.headers.remove_head(&(self.last_imported_block.unwrap() + 1));
self.bodies.remove_head(&(self.last_imported_block.unwrap() + 1));
if self.headers.is_empty() {
assert!(self.bodies.is_empty());
@ -730,7 +716,7 @@ impl ChainSync {
}
}
/// Remove downloaded bocks/headers starting from specified number.
/// Remove downloaded bocks/headers starting from specified number.
/// Used to recover from an error and re-download parts of the chain detected as bad.
fn remove_downloaded_blocks(&mut self, start: BlockNumber) {
for n in self.headers.get_tail(&start) {
@ -809,7 +795,6 @@ impl ChainSync {
Ok(_) => {
let mut peer = self.peers.get_mut(&peer_id).unwrap();
peer.asking = asking;
peer.ask_time = time::precise_time_s();
}
}
}
@ -974,7 +959,7 @@ impl ChainSync {
NEW_BLOCK_HASHES_PACKET => self.on_peer_new_hashes(io, peer, &rlp),
GET_NODE_DATA_PACKET => self.return_node_data(io, &rlp),
GET_RECEIPTS_PACKET => self.return_receipts(io, &rlp),
_ => {
_ => {
debug!(target: "sync", "Unknown packet {}", packet_id);
Ok(())
}
@ -984,18 +969,7 @@ impl ChainSync {
})
}
/// Handle peer timeouts
pub fn maintain_peers(&self, io: &mut SyncIo) {
let tick = time::precise_time_s();
for (peer_id, peer) in &self.peers {
if peer.asking != PeerAsking::Nothing && (tick - peer.ask_time) > CONNECTION_TIMEOUT_SEC {
io.disconnect_peer(*peer_id);
}
}
}
/// Maintain other peers. Send out any new blocks and transactions
pub fn _maintain_sync(&mut self, _io: &mut SyncIo) {
}
}