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Merge pull request #198 from ethcore/io

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Mutithreaded IO
This commit is contained in:
Marek Kotewicz 2016-01-22 15:02:46 +01:00
commit f999e5eda2
26 changed files with 1072 additions and 713 deletions
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1
Cargo.toml
View File

@ -20,6 +20,7 @@ time = "0.1"
evmjit = { path = "rust-evmjit", optional = true }
ethash = { path = "ethash" }
num_cpus = "0.2"
ctrlc = "1.0"
clippy = "*" # Always newest, since we use nightly
[features]

12
ethash/src/lib.rs
View File

@ -30,11 +30,13 @@ impl EthashManager {
/// `nonce` - The nonce to pack into the mix
pub fn compute_light(&self, block_number: u64, header_hash: &H256, nonce: u64) -> ProofOfWork {
let epoch = block_number / ETHASH_EPOCH_LENGTH;
if !self.lights.read().unwrap().contains_key(&epoch) {
let mut lights = self.lights.write().unwrap(); // obtain write lock
if !lights.contains_key(&epoch) {
let light = Light::new(block_number);
lights.insert(epoch, light);
while !self.lights.read().unwrap().contains_key(&epoch) {
if let Ok(mut lights) = self.lights.try_write()
{
if !lights.contains_key(&epoch) {
let light = Light::new(block_number);
lights.insert(epoch, light);
}
}
}
self.lights.read().unwrap().get(&epoch).unwrap().compute(header_hash, nonce)

80
src/bin/client/main.rs
View File

@ -3,17 +3,18 @@ extern crate ethcore;
extern crate rustc_serialize;
extern crate log;
extern crate env_logger;
extern crate ctrlc;
use std::io::stdin;
use std::env;
use log::{LogLevelFilter};
use env_logger::LogBuilder;
use ctrlc::CtrlC;
use util::*;
use ethcore::client::*;
use ethcore::service::ClientService;
use ethcore::service::{ClientService, NetSyncMessage};
use ethcore::ethereum;
use ethcore::blockchain::CacheSize;
use ethcore::sync::*;
use ethcore::sync::EthSync;
fn setup_log() {
let mut builder = LogBuilder::new();
@ -30,41 +31,56 @@ fn main() {
setup_log();
let spec = ethereum::new_frontier();
let mut service = ClientService::start(spec).unwrap();
let io_handler = Box::new(ClientIoHandler { client: service.client(), timer: 0, info: Default::default() });
let io_handler = Arc::new(ClientIoHandler { client: service.client(), info: Default::default(), sync: service.sync() });
service.io().register_handler(io_handler).expect("Error registering IO handler");
loop {
let mut cmd = String::new();
stdin().read_line(&mut cmd).unwrap();
if cmd == "quit\n" || cmd == "exit\n" || cmd == "q\n" {
break;
let exit = Arc::new(Condvar::new());
let e = exit.clone();
CtrlC::set_handler(move || { e.notify_all(); });
let mutex = Mutex::new(());
let _ = exit.wait(mutex.lock().unwrap()).unwrap();
}
struct Informant {
chain_info: RwLock<Option<BlockChainInfo>>,
cache_info: RwLock<Option<CacheSize>>,
report: RwLock<Option<ClientReport>>,
}
impl Default for Informant {
fn default() -> Self {
Informant {
chain_info: RwLock::new(None),
cache_info: RwLock::new(None),
report: RwLock::new(None),
}
}
}
#[derive(Default, Debug)]
struct Informant {
chain_info: Option<BlockChainInfo>,
cache_info: Option<CacheSize>,
report: Option<ClientReport>,
}
impl Informant {
pub fn tick(&mut self, client: &Client) {
pub fn tick(&self, client: &Client, sync: &EthSync) {
// 5 seconds betwen calls. TODO: calculate this properly.
let dur = 5usize;
let chain_info = client.chain_info();
let queue_info = client.queue_info();
let cache_info = client.cache_info();
let report = client.report();
let sync_info = sync.status();
if let (_, &Some(ref last_cache_info), &Some(ref last_report)) = (&self.chain_info, &self.cache_info, &self.report) {
println!("[ {} {} ]---[ {} blk/s | {} tx/s | {} gas/s //···{}···// {} ({}) bl {} ({}) ex ]",
if let (_, &Some(ref last_cache_info), &Some(ref last_report)) = (self.chain_info.read().unwrap().deref(), self.cache_info.read().unwrap().deref(), self.report.read().unwrap().deref()) {
println!("[ {} {} ]---[ {} blk/s | {} tx/s | {} gas/s //··· {}/{} peers, {} downloaded, {} queued ···// {} ({}) bl {} ({}) ex ]",
chain_info.best_block_number,
chain_info.best_block_hash,
(report.blocks_imported - last_report.blocks_imported) / dur,
(report.transactions_applied - last_report.transactions_applied) / dur,
(report.gas_processed - last_report.gas_processed) / From::from(dur),
0, // TODO: peers
sync_info.num_active_peers,
sync_info.num_peers,
sync_info.blocks_received,
queue_info.queue_size,
cache_info.blocks,
cache_info.blocks as isize - last_cache_info.blocks as isize,
cache_info.block_details,
@ -72,28 +88,28 @@ impl Informant {
);
}
self.chain_info = Some(chain_info);
self.cache_info = Some(cache_info);
self.report = Some(report);
*self.chain_info.write().unwrap().deref_mut() = Some(chain_info);
*self.cache_info.write().unwrap().deref_mut() = Some(cache_info);
*self.report.write().unwrap().deref_mut() = Some(report);
}
}
const INFO_TIMER: TimerToken = 0;
struct ClientIoHandler {
client: Arc<RwLock<Client>>,
timer: TimerToken,
client: Arc<Client>,
sync: Arc<EthSync>,
info: Informant,
}
impl IoHandler<NetSyncMessage> for ClientIoHandler {
fn initialize<'s>(&'s mut self, io: &mut IoContext<'s, NetSyncMessage>) {
self.timer = io.register_timer(5000).expect("Error registering timer");
fn initialize(&self, io: &IoContext<NetSyncMessage>) {
io.register_timer(INFO_TIMER, 5000).expect("Error registering timer");
}
fn timeout<'s>(&'s mut self, _io: &mut IoContext<'s, NetSyncMessage>, timer: TimerToken) {
if self.timer == timer {
let client = self.client.read().unwrap();
client.tick();
self.info.tick(client.deref());
fn timeout(&self, _io: &IoContext<NetSyncMessage>, timer: TimerToken) {
if INFO_TIMER == timer {
self.info.tick(&self.client, &self.sync);
}
}
}

35
src/queue.rs → src/block_queue.rs
View File

@ -1,12 +1,23 @@
//! A queue of blocks. Sits between network or other I/O and the BlockChain.
//! Sorts them ready for blockchain insertion.
use std::thread::{JoinHandle, self};
use std::sync::atomic::{AtomicBool, Ordering as AtomicOrdering};
use util::*;
use verification::*;
use error::*;
use engine::Engine;
use sync::*;
use views::*;
use header::*;
use service::*;
/// Block queue status
#[derive(Debug)]
pub struct BlockQueueInfo {
/// Indicates that queue is full
pub full: bool,
/// Number of queued blocks
pub queue_size: usize,
}
/// A queue of blocks. Sits between network or other I/O and the BlockChain.
/// Sorts them ready for blockchain insertion.
@ -63,14 +74,15 @@ impl BlockQueue {
let deleting = Arc::new(AtomicBool::new(false));
let mut verifiers: Vec<JoinHandle<()>> = Vec::new();
let thread_count = max(::num_cpus::get(), 2) - 1;
for _ in 0..thread_count {
let thread_count = max(::num_cpus::get(), 3) - 2;
for i in 0..thread_count {
let verification = verification.clone();
let engine = engine.clone();
let more_to_verify = more_to_verify.clone();
let ready_signal = ready_signal.clone();
let deleting = deleting.clone();
verifiers.push(thread::spawn(move || BlockQueue::verify(verification, engine, more_to_verify, ready_signal, deleting)));
verifiers.push(thread::Builder::new().name(format!("Verifier #{}", i)).spawn(move || BlockQueue::verify(verification, engine, more_to_verify, ready_signal, deleting))
.expect("Error starting block verification thread"));
}
BlockQueue {
engine: engine,
@ -204,7 +216,7 @@ impl BlockQueue {
verification.verified = new_verified;
}
/// TODO [arkpar] Please document me
/// Removes up to `max` verified blocks from the queue
pub fn drain(&mut self, max: usize) -> Vec<PreVerifiedBlock> {
let mut verification = self.verification.lock().unwrap();
let count = min(max, verification.verified.len());
@ -215,8 +227,19 @@ impl BlockQueue {
result.push(block);
}
self.ready_signal.reset();
if !verification.verified.is_empty() {
self.ready_signal.set();
}
result
}
/// Get queue status.
pub fn queue_info(&self) -> BlockQueueInfo {
BlockQueueInfo {
full: false,
queue_size: self.verification.lock().unwrap().unverified.len(),
}
}
}
impl Drop for BlockQueue {
@ -234,7 +257,7 @@ impl Drop for BlockQueue {
mod tests {
use util::*;
use spec::*;
use queue::*;
use block_queue::*;
#[test]
fn test_block_queue() {

24
src/blockchain.rs
View File

@ -341,19 +341,19 @@ impl BlockChain {
Some(h) => h,
None => return None,
};
Some(self._tree_route((from_details, from), (to_details, to)))
Some(self._tree_route((&from_details, &from), (&to_details, &to)))
}
/// Similar to `tree_route` function, but can be used to return a route
/// between blocks which may not be in database yet.
fn _tree_route(&self, from: (BlockDetails, H256), to: (BlockDetails, H256)) -> TreeRoute {
fn _tree_route(&self, from: (&BlockDetails, &H256), to: (&BlockDetails, &H256)) -> TreeRoute {
let mut from_branch = vec![];
let mut to_branch = vec![];
let mut from_details = from.0;
let mut to_details = to.0;
let mut current_from = from.1;
let mut current_to = to.1;
let mut from_details = from.0.clone();
let mut to_details = to.0.clone();
let mut current_from = from.1.clone();
let mut current_to = to.1.clone();
// reset from && to to the same level
while from_details.number > to_details.number {
@ -408,7 +408,7 @@ impl BlockChain {
// store block in db
self.blocks_db.put(&hash, &bytes).unwrap();
let (batch, new_best) = self.block_to_extras_insert_batch(bytes);
let (batch, new_best, details) = self.block_to_extras_insert_batch(bytes);
// update best block
let mut best_block = self.best_block.write().unwrap();
@ -419,6 +419,8 @@ impl BlockChain {
// update caches
let mut write = self.block_details.write().unwrap();
write.remove(&header.parent_hash());
write.insert(hash.clone(), details);
self.note_used(CacheID::Block(hash));
// update extras database
self.extras_db.write(batch).unwrap();
@ -426,7 +428,7 @@ impl BlockChain {
/// Transforms block into WriteBatch that may be written into database
/// Additionally, if it's new best block it returns new best block object.
fn block_to_extras_insert_batch(&self, bytes: &[u8]) -> (WriteBatch, Option<BestBlock>) {
fn block_to_extras_insert_batch(&self, bytes: &[u8]) -> (WriteBatch, Option<BestBlock>, BlockDetails) {
// create views onto rlp
let block = BlockView::new(bytes);
let header = block.header_view();
@ -458,7 +460,7 @@ impl BlockChain {
// if it's not new best block, just return
if !is_new_best {
return (batch, None);
return (batch, None, details);
}
// if its new best block we need to make sure that all ancestors
@ -466,7 +468,7 @@ impl BlockChain {
// find the route between old best block and the new one
let best_hash = self.best_block_hash();
let best_details = self.block_details(&best_hash).expect("best block hash is invalid!");
let route = self._tree_route((best_details, best_hash), (details, hash.clone()));
let route = self._tree_route((&best_details, &best_hash), (&details, &hash));
match route.blocks.len() {
// its our parent
@ -493,7 +495,7 @@ impl BlockChain {
total_difficulty: total_difficulty
};
(batch, Some(best_block))
(batch, Some(best_block), details)
}
/// Returns true if transaction is known.

92
src/client.rs
View File

@ -6,8 +6,8 @@ use error::*;
use header::BlockNumber;
use spec::Spec;
use engine::Engine;
use queue::BlockQueue;
use sync::NetSyncMessage;
use block_queue::{BlockQueue, BlockQueueInfo};
use service::NetSyncMessage;
use env_info::LastHashes;
use verification::*;
use block::*;
@ -46,13 +46,6 @@ impl fmt::Display for BlockChainInfo {
}
}
/// Block queue status
#[derive(Debug)]
pub struct BlockQueueStatus {
/// TODO [arkpar] Please document me
pub full: bool,
}
/// TODO [arkpar] Please document me
pub type TreeRoute = ::blockchain::TreeRoute;
@ -95,13 +88,13 @@ pub trait BlockChainClient : Sync + Send {
fn block_receipts(&self, hash: &H256) -> Option<Bytes>;
/// Import a block into the blockchain.
fn import_block(&mut self, bytes: Bytes) -> ImportResult;
fn import_block(&self, bytes: Bytes) -> ImportResult;
/// Get block queue information.
fn queue_status(&self) -> BlockQueueStatus;
fn queue_info(&self) -> BlockQueueInfo;
/// Clear block queue and abort all import activity.
fn clear_queue(&mut self);
fn clear_queue(&self);
/// Get blockchain information.
fn chain_info(&self) -> BlockChainInfo;
@ -132,19 +125,21 @@ pub struct Client {
chain: Arc<RwLock<BlockChain>>,
engine: Arc<Box<Engine>>,
state_db: JournalDB,
queue: BlockQueue,
report: ClientReport,
block_queue: RwLock<BlockQueue>,
report: RwLock<ClientReport>,
uncommited_states: RwLock<HashMap<H256, JournalDB>>,
import_lock: Mutex<()>
}
const HISTORY: u64 = 1000;
impl Client {
/// Create a new client with given spec and DB path.
pub fn new(spec: Spec, path: &Path, message_channel: IoChannel<NetSyncMessage> ) -> Result<Client, Error> {
pub fn new(spec: Spec, path: &Path, message_channel: IoChannel<NetSyncMessage> ) -> Result<Arc<Client>, Error> {
let chain = Arc::new(RwLock::new(BlockChain::new(&spec.genesis_block(), path)));
let mut opts = Options::new();
opts.create_if_missing(true);
opts.set_max_open_files(256);
opts.create_if_missing(true);
/*opts.set_use_fsync(false);
opts.set_bytes_per_sync(8388608);
opts.set_disable_data_sync(false);
@ -164,37 +159,40 @@ impl Client {
let mut state_path = path.to_path_buf();
state_path.push("state");
let db = DB::open(&opts, state_path.to_str().unwrap()).unwrap();
let mut state_db = JournalDB::new(db);
let db = Arc::new(DB::open(&opts, state_path.to_str().unwrap()).unwrap());
let engine = Arc::new(try!(spec.to_engine()));
if engine.spec().ensure_db_good(&mut state_db) {
state_db.commit(0, &engine.spec().genesis_header().hash(), None).expect("Error commiting genesis state to state DB");
{
let mut state_db = JournalDB::new_with_arc(db.clone());
if engine.spec().ensure_db_good(&mut state_db) {
state_db.commit(0, &engine.spec().genesis_header().hash(), None).expect("Error commiting genesis state to state DB");
}
}
let state_db = JournalDB::new_with_arc(db);
// chain.write().unwrap().ensure_good(&state_db);
Ok(Client {
Ok(Arc::new(Client {
chain: chain,
engine: engine.clone(),
state_db: state_db,
queue: BlockQueue::new(engine, message_channel),
report: Default::default(),
})
block_queue: RwLock::new(BlockQueue::new(engine, message_channel)),
report: RwLock::new(Default::default()),
uncommited_states: RwLock::new(HashMap::new()),
import_lock: Mutex::new(()),
}))
}
/// This is triggered by a message coming from a block queue when the block is ready for insertion
pub fn import_verified_blocks(&mut self) {
pub fn import_verified_blocks(&self, _io: &IoChannel<NetSyncMessage>) {
let mut bad = HashSet::new();
let blocks = self.queue.drain(128);
let _import_lock = self.import_lock.lock();
let blocks = self.block_queue.write().unwrap().drain(128);
if blocks.is_empty() {
return;
}
for block in blocks {
if bad.contains(&block.header.parent_hash) {
self.queue.mark_as_bad(&block.header.hash());
self.block_queue.write().unwrap().mark_as_bad(&block.header.hash());
bad.insert(block.header.hash());
continue;
}
@ -202,7 +200,7 @@ impl Client {
let header = &block.header;
if let Err(e) = verify_block_family(&header, &block.bytes, self.engine.deref().deref(), self.chain.read().unwrap().deref()) {
warn!(target: "client", "Stage 3 block verification failed for #{} ({})\nError: {:?}", header.number(), header.hash(), e);
self.queue.mark_as_bad(&header.hash());
self.block_queue.write().unwrap().mark_as_bad(&header.hash());
bad.insert(block.header.hash());
return;
};
@ -210,7 +208,7 @@ impl Client {
Some(p) => p,
None => {
warn!(target: "client", "Block import failed for #{} ({}): Parent not found ({}) ", header.number(), header.hash(), header.parent_hash);
self.queue.mark_as_bad(&header.hash());
self.block_queue.write().unwrap().mark_as_bad(&header.hash());
bad.insert(block.header.hash());
return;
},
@ -228,18 +226,19 @@ impl Client {
}
}
let result = match enact_verified(&block, self.engine.deref().deref(), self.state_db.clone(), &parent, &last_hashes) {
let db = self.state_db.clone();
let result = match enact_verified(&block, self.engine.deref().deref(), db, &parent, &last_hashes) {
Ok(b) => b,
Err(e) => {
warn!(target: "client", "Block import failed for #{} ({})\nError: {:?}", header.number(), header.hash(), e);
bad.insert(block.header.hash());
self.queue.mark_as_bad(&header.hash());
self.block_queue.write().unwrap().mark_as_bad(&header.hash());
return;
}
};
if let Err(e) = verify_block_final(&header, result.block().header()) {
warn!(target: "client", "Stage 4 block verification failed for #{} ({})\nError: {:?}", header.number(), header.hash(), e);
self.queue.mark_as_bad(&header.hash());
self.block_queue.write().unwrap().mark_as_bad(&header.hash());
return;
}
@ -252,12 +251,16 @@ impl Client {
return;
}
}
self.report.accrue_block(&block);
self.report.write().unwrap().accrue_block(&block);
trace!(target: "client", "Imported #{} ({})", header.number(), header.hash());
}
}
/// Clear cached state overlay
pub fn clear_state(&self, hash: &H256) {
self.uncommited_states.write().unwrap().remove(hash);
}
/// Get info on the cache.
pub fn cache_info(&self) -> CacheSize {
self.chain.read().unwrap().cache_size()
@ -265,7 +268,7 @@ impl Client {
/// Get the report.
pub fn report(&self) -> ClientReport {
self.report.clone()
self.report.read().unwrap().clone()
}
/// Tick the client.
@ -328,21 +331,20 @@ impl BlockChainClient for Client {
unimplemented!();
}
fn import_block(&mut self, bytes: Bytes) -> ImportResult {
fn import_block(&self, bytes: Bytes) -> ImportResult {
let header = BlockView::new(&bytes).header();
if self.chain.read().unwrap().is_known(&header.hash()) {
return Err(ImportError::AlreadyInChain);
}
self.queue.import_block(bytes)
self.block_queue.write().unwrap().import_block(bytes)
}
fn queue_status(&self) -> BlockQueueStatus {
BlockQueueStatus {
full: false
}
fn queue_info(&self) -> BlockQueueInfo {
self.block_queue.read().unwrap().queue_info()
}
fn clear_queue(&mut self) {
fn clear_queue(&self) {
self.block_queue.write().unwrap().clear();
}
fn chain_info(&self) -> BlockChainInfo {

3
src/lib.rs
View File

@ -151,6 +151,5 @@ pub mod sync;
pub mod block;
/// TODO [arkpar] Please document me
pub mod verification;
/// TODO [debris] Please document me
pub mod queue;
pub mod block_queue;
pub mod ethereum;

56
src/service.rs
View File

@ -5,10 +5,23 @@ use error::*;
use std::env;
use client::Client;
/// Message type for external and internal events
#[derive(Clone)]
pub enum SyncMessage {
/// New block has been imported into the blockchain
NewChainBlock(Bytes), //TODO: use Cow
/// A block is ready
BlockVerified,
}
/// TODO [arkpar] Please document me
pub type NetSyncMessage = NetworkIoMessage<SyncMessage>;
/// Client service setup. Creates and registers client and network services with the IO subsystem.
pub struct ClientService {
net_service: NetworkService<SyncMessage>,
client: Arc<RwLock<Client>>,
client: Arc<Client>,
sync: Arc<EthSync>,
}
impl ClientService {
@ -20,9 +33,9 @@ impl ClientService {
let mut dir = env::home_dir().unwrap();
dir.push(".parity");
dir.push(H64::from(spec.genesis_header().hash()).hex());
let client = Arc::new(RwLock::new(try!(Client::new(spec, &dir, net_service.io().channel()))));
EthSync::register(&mut net_service, client.clone());
let client_io = Box::new(ClientIoHandler {
let client = try!(Client::new(spec, &dir, net_service.io().channel()));
let sync = EthSync::register(&mut net_service, client.clone());
let client_io = Arc::new(ClientIoHandler {
client: client.clone()
});
try!(net_service.io().register_handler(client_io));
@ -30,6 +43,7 @@ impl ClientService {
Ok(ClientService {
net_service: net_service,
client: client,
sync: sync,
})
}
@ -39,25 +53,45 @@ impl ClientService {
}
/// TODO [arkpar] Please document me
pub fn client(&self) -> Arc<RwLock<Client>> {
pub fn client(&self) -> Arc<Client> {
self.client.clone()
}
/// Get shared sync handler
pub fn sync(&self) -> Arc<EthSync> {
self.sync.clone()
}
}
/// IO interface for the Client handler
struct ClientIoHandler {
client: Arc<RwLock<Client>>
client: Arc<Client>
}
const CLIENT_TICK_TIMER: TimerToken = 0;
const CLIENT_TICK_MS: u64 = 5000;
impl IoHandler<NetSyncMessage> for ClientIoHandler {
fn initialize<'s>(&'s mut self, _io: &mut IoContext<'s, NetSyncMessage>) {
fn initialize(&self, io: &IoContext<NetSyncMessage>) {
io.register_timer(CLIENT_TICK_TIMER, CLIENT_TICK_MS).expect("Error registering client timer");
}
fn timeout(&self, _io: &IoContext<NetSyncMessage>, timer: TimerToken) {
if timer == CLIENT_TICK_TIMER {
self.client.tick();
}
}
#[allow(match_ref_pats)]
fn message<'s>(&'s mut self, _io: &mut IoContext<'s, NetSyncMessage>, net_message: &'s mut NetSyncMessage) {
if let &mut UserMessage(ref mut message) = net_message {
if let &mut SyncMessage::BlockVerified= message {
self.client.write().unwrap().import_verified_blocks();
#[allow(single_match)]
fn message(&self, io: &IoContext<NetSyncMessage>, net_message: &NetSyncMessage) {
if let &UserMessage(ref message) = net_message {
match message {
&SyncMessage::BlockVerified => {
self.client.import_verified_blocks(&io.channel());
},
_ => {}, // ignore other messages
}
}
}

18
src/sync/chain.rs
View File

@ -107,6 +107,10 @@ pub struct SyncStatus {
pub blocks_total: usize,
/// Number of blocks downloaded so far.
pub blocks_received: usize,
/// Total number of connected peers
pub num_peers: usize,
/// Total number of active peers
pub num_active_peers: usize,
}
#[derive(PartialEq, Eq, Debug)]
@ -195,8 +199,10 @@ impl ChainSync {
start_block_number: self.starting_block,
last_imported_block_number: self.last_imported_block,
highest_block_number: self.highest_block,
blocks_total: (self.last_imported_block - self.starting_block) as usize,
blocks_received: (self.highest_block - self.starting_block) as usize,
blocks_received: (self.last_imported_block - self.starting_block) as usize,
blocks_total: (self.highest_block - self.starting_block) as usize,
num_peers: self.peers.len(),
num_active_peers: self.peers.values().filter(|p| p.asking != PeerAsking::Nothing).count(),
}
}
@ -425,6 +431,10 @@ impl ChainSync {
let peer_difficulty = self.peers.get_mut(&peer_id).expect("ChainSync: unknown peer").difficulty;
if difficulty > peer_difficulty {
trace!(target: "sync", "Received block {:?} with no known parent. Peer needs syncing...", h);
{
let peer = self.peers.get_mut(&peer_id).expect("ChainSync: unknown peer");
peer.latest = header_view.sha3();
}
self.sync_peer(io, peer_id, true);
}
}
@ -541,7 +551,7 @@ impl ChainSync {
fn request_blocks(&mut self, io: &mut SyncIo, peer_id: PeerId) {
self.clear_peer_download(peer_id);
if io.chain().queue_status().full {
if io.chain().queue_info().full {
self.pause_sync();
return;
}
@ -950,7 +960,7 @@ impl ChainSync {
}
/// Maintain other peers. Send out any new blocks and transactions
pub fn maintain_sync(&mut self, _io: &mut SyncIo) {
pub fn _maintain_sync(&mut self, _io: &mut SyncIo) {
}
}

18
src/sync/io.rs
View File

@ -1,7 +1,7 @@
use client::BlockChainClient;
use util::{NetworkContext, PeerId, PacketId,};
use util::error::UtilError;
use sync::SyncMessage;
use service::SyncMessage;
/// IO interface for the syning handler.
/// Provides peer connection management and an interface to the blockchain client.
@ -14,7 +14,7 @@ pub trait SyncIo {
/// Send a packet to a peer.
fn send(&mut self, peer_id: PeerId, packet_id: PacketId, data: Vec<u8>) -> Result<(), UtilError>;
/// Get the blockchain
fn chain(&mut self) -> &mut BlockChainClient;
fn chain(&self) -> &BlockChainClient;
/// Returns peer client identifier string
fn peer_info(&self, peer_id: PeerId) -> String {
peer_id.to_string()
@ -22,14 +22,14 @@ pub trait SyncIo {
}
/// Wraps `NetworkContext` and the blockchain client
pub struct NetSyncIo<'s, 'h, 'io> where 'h: 's, 'io: 'h {
network: &'s mut NetworkContext<'h, 'io, SyncMessage>,
chain: &'s mut BlockChainClient
pub struct NetSyncIo<'s, 'h> where 'h: 's {
network: &'s NetworkContext<'h, SyncMessage>,
chain: &'s BlockChainClient
}
impl<'s, 'h, 'io> NetSyncIo<'s, 'h, 'io> {
impl<'s, 'h> NetSyncIo<'s, 'h> {
/// Creates a new instance from the `NetworkContext` and the blockchain client reference.
pub fn new(network: &'s mut NetworkContext<'h, 'io, SyncMessage>, chain: &'s mut BlockChainClient) -> NetSyncIo<'s,'h,'io> {
pub fn new(network: &'s NetworkContext<'h, SyncMessage>, chain: &'s BlockChainClient) -> NetSyncIo<'s, 'h> {
NetSyncIo {
network: network,
chain: chain,
@ -37,7 +37,7 @@ impl<'s, 'h, 'io> NetSyncIo<'s, 'h, 'io> {
}
}
impl<'s, 'h, 'op> SyncIo for NetSyncIo<'s, 'h, 'op> {
impl<'s, 'h> SyncIo for NetSyncIo<'s, 'h> {
fn disable_peer(&mut self, peer_id: PeerId) {
self.network.disable_peer(peer_id);
}
@ -50,7 +50,7 @@ impl<'s, 'h, 'op> SyncIo for NetSyncIo<'s, 'h, 'op> {
self.network.send(peer_id, packet_id, data)
}
fn chain(&mut self) -> &mut BlockChainClient {
fn chain(&self) -> &BlockChainClient {
self.chain
}

58
src/sync/mod.rs
View File

@ -25,10 +25,9 @@
use std::ops::*;
use std::sync::*;
use client::Client;
use util::network::{NetworkProtocolHandler, NetworkService, NetworkContext, PeerId, NetworkIoMessage};
use util::TimerToken;
use util::Bytes;
use util::network::{NetworkProtocolHandler, NetworkService, NetworkContext, PeerId};
use sync::chain::ChainSync;
use service::SyncMessage;
use sync::io::NetSyncIo;
mod chain;
@ -38,76 +37,57 @@ mod range_collection;
#[cfg(test)]
mod tests;
/// Message type for external events
pub enum SyncMessage {
/// New block has been imported into the blockchain
NewChainBlock(Bytes),
/// A block is ready
BlockVerified,
}
/// TODO [arkpar] Please document me
pub type NetSyncMessage = NetworkIoMessage<SyncMessage>;
/// Ethereum network protocol handler
pub struct EthSync {
/// Shared blockchain client. TODO: this should evetually become an IPC endpoint
chain: Arc<RwLock<Client>>,
chain: Arc<Client>,
/// Sync strategy
sync: ChainSync
sync: RwLock<ChainSync>
}
pub use self::chain::SyncStatus;
impl EthSync {
/// Creates and register protocol with the network service
pub fn register(service: &mut NetworkService<SyncMessage>, chain: Arc<RwLock<Client>>) {
let sync = Box::new(EthSync {
pub fn register(service: &mut NetworkService<SyncMessage>, chain: Arc<Client>) -> Arc<EthSync> {
let sync = Arc::new(EthSync {
chain: chain,
sync: ChainSync::new(),
sync: RwLock::new(ChainSync::new()),
});
service.register_protocol(sync, "eth", &[62u8, 63u8]).expect("Error registering eth protocol handler");
service.register_protocol(sync.clone(), "eth", &[62u8, 63u8]).expect("Error registering eth protocol handler");
sync
}
/// Get sync status
pub fn status(&self) -> SyncStatus {
self.sync.status()
self.sync.read().unwrap().status()
}
/// Stop sync
pub fn stop(&mut self, io: &mut NetworkContext<SyncMessage>) {
self.sync.abort(&mut NetSyncIo::new(io, self.chain.write().unwrap().deref_mut()));
self.sync.write().unwrap().abort(&mut NetSyncIo::new(io, self.chain.deref()));
}
/// Restart sync
pub fn restart(&mut self, io: &mut NetworkContext<SyncMessage>) {
self.sync.restart(&mut NetSyncIo::new(io, self.chain.write().unwrap().deref_mut()));
self.sync.write().unwrap().restart(&mut NetSyncIo::new(io, self.chain.deref()));
}
}
impl NetworkProtocolHandler<SyncMessage> for EthSync {
fn initialize(&mut self, io: &mut NetworkContext<SyncMessage>) {
self.sync.restart(&mut NetSyncIo::new(io, self.chain.write().unwrap().deref_mut()));
io.register_timer(1000).unwrap();
fn initialize(&self, _io: &NetworkContext<SyncMessage>) {
}
fn read(&mut self, io: &mut NetworkContext<SyncMessage>, peer: &PeerId, packet_id: u8, data: &[u8]) {
self.sync.on_packet(&mut NetSyncIo::new(io, self.chain.write().unwrap().deref_mut()) , *peer, packet_id, data);
fn read(&self, io: &NetworkContext<SyncMessage>, peer: &PeerId, packet_id: u8, data: &[u8]) {
self.sync.write().unwrap().on_packet(&mut NetSyncIo::new(io, self.chain.deref()) , *peer, packet_id, data);
}
fn connected(&mut self, io: &mut NetworkContext<SyncMessage>, peer: &PeerId) {
self.sync.on_peer_connected(&mut NetSyncIo::new(io, self.chain.write().unwrap().deref_mut()), *peer);
fn connected(&self, io: &NetworkContext<SyncMessage>, peer: &PeerId) {
self.sync.write().unwrap().on_peer_connected(&mut NetSyncIo::new(io, self.chain.deref()), *peer);
}
fn disconnected(&mut self, io: &mut NetworkContext<SyncMessage>, peer: &PeerId) {
self.sync.on_peer_aborting(&mut NetSyncIo::new(io, self.chain.write().unwrap().deref_mut()), *peer);
}
fn timeout(&mut self, io: &mut NetworkContext<SyncMessage>, _timer: TimerToken) {
self.sync.maintain_sync(&mut NetSyncIo::new(io, self.chain.write().unwrap().deref_mut()));
}
fn message(&mut self, _io: &mut NetworkContext<SyncMessage>, _message: &SyncMessage) {
fn disconnected(&self, io: &NetworkContext<SyncMessage>, peer: &PeerId) {
self.sync.write().unwrap().on_peer_aborting(&mut NetSyncIo::new(io, self.chain.deref()), *peer);
}
}

99
src/sync/tests.rs
View File

@ -1,38 +1,40 @@
use util::*;
use client::{BlockChainClient, BlockStatus, TreeRoute, BlockQueueStatus, BlockChainInfo};
use client::{BlockChainClient, BlockStatus, TreeRoute, BlockChainInfo};
use block_queue::BlockQueueInfo;
use header::{Header as BlockHeader, BlockNumber};
use error::*;
use sync::io::SyncIo;
use sync::chain::ChainSync;
struct TestBlockChainClient {
blocks: HashMap<H256, Bytes>,
numbers: HashMap<usize, H256>,
blocks: RwLock<HashMap<H256, Bytes>>,
numbers: RwLock<HashMap<usize, H256>>,
genesis_hash: H256,
last_hash: H256,
difficulty: U256
last_hash: RwLock<H256>,
difficulty: RwLock<U256>,
}
impl TestBlockChainClient {
fn new() -> TestBlockChainClient {
let mut client = TestBlockChainClient {
blocks: HashMap::new(),
numbers: HashMap::new(),
blocks: RwLock::new(HashMap::new()),
numbers: RwLock::new(HashMap::new()),
genesis_hash: H256::new(),
last_hash: H256::new(),
difficulty: From::from(0),
last_hash: RwLock::new(H256::new()),
difficulty: RwLock::new(From::from(0)),
};
client.add_blocks(1, true); // add genesis block
client.genesis_hash = client.last_hash.clone();
client.genesis_hash = client.last_hash.read().unwrap().clone();
client
}
pub fn add_blocks(&mut self, count: usize, empty: bool) {
for n in self.numbers.len()..(self.numbers.len() + count) {
let len = self.numbers.read().unwrap().len();
for n in len..(len + count) {
let mut header = BlockHeader::new();
header.difficulty = From::from(n);
header.parent_hash = self.last_hash.clone();
header.parent_hash = self.last_hash.read().unwrap().clone();
header.number = n as BlockNumber;
let mut uncles = RlpStream::new_list(if empty {0} else {1});
if !empty {
@ -50,12 +52,12 @@ impl TestBlockChainClient {
impl BlockChainClient for TestBlockChainClient {
fn block_header(&self, h: &H256) -> Option<Bytes> {
self.blocks.get(h).map(|r| Rlp::new(r).at(0).as_raw().to_vec())
self.blocks.read().unwrap().get(h).map(|r| Rlp::new(r).at(0).as_raw().to_vec())
}
fn block_body(&self, h: &H256) -> Option<Bytes> {
self.blocks.get(h).map(|r| {
self.blocks.read().unwrap().get(h).map(|r| {
let mut stream = RlpStream::new_list(2);
stream.append_raw(Rlp::new(&r).at(1).as_raw(), 1);
stream.append_raw(Rlp::new(&r).at(2).as_raw(), 1);
@ -64,30 +66,30 @@ impl BlockChainClient for TestBlockChainClient {
}
fn block(&self, h: &H256) -> Option<Bytes> {
self.blocks.get(h).cloned()
self.blocks.read().unwrap().get(h).cloned()
}
fn block_status(&self, h: &H256) -> BlockStatus {
match self.blocks.get(h) {
match self.blocks.read().unwrap().get(h) {
Some(_) => BlockStatus::InChain,
None => BlockStatus::Unknown
}
}
fn block_header_at(&self, n: BlockNumber) -> Option<Bytes> {
self.numbers.get(&(n as usize)).and_then(|h| self.block_header(h))
self.numbers.read().unwrap().get(&(n as usize)).and_then(|h| self.block_header(h))
}
fn block_body_at(&self, n: BlockNumber) -> Option<Bytes> {
self.numbers.get(&(n as usize)).and_then(|h| self.block_body(h))
self.numbers.read().unwrap().get(&(n as usize)).and_then(|h| self.block_body(h))
}
fn block_at(&self, n: BlockNumber) -> Option<Bytes> {
self.numbers.get(&(n as usize)).map(|h| self.blocks.get(h).unwrap().clone())
self.numbers.read().unwrap().get(&(n as usize)).map(|h| self.blocks.read().unwrap().get(h).unwrap().clone())
}
fn block_status_at(&self, n: BlockNumber) -> BlockStatus {
if (n as usize) < self.blocks.len() {
if (n as usize) < self.blocks.read().unwrap().len() {
BlockStatus::InChain
} else {
BlockStatus::Unknown
@ -110,14 +112,14 @@ impl BlockChainClient for TestBlockChainClient {
None
}
fn import_block(&mut self, b: Bytes) -> ImportResult {
fn import_block(&self, b: Bytes) -> ImportResult {
let header = Rlp::new(&b).val_at::<BlockHeader>(0);
let number: usize = header.number as usize;
if number > self.blocks.len() {
panic!("Unexpected block number. Expected {}, got {}", self.blocks.len(), number);
if number > self.blocks.read().unwrap().len() {
panic!("Unexpected block number. Expected {}, got {}", self.blocks.read().unwrap().len(), number);
}
if number > 0 {
match self.blocks.get(&header.parent_hash) {
match self.blocks.read().unwrap().get(&header.parent_hash) {
Some(parent) => {
let parent = Rlp::new(parent).val_at::<BlockHeader>(0);
if parent.number != (header.number - 1) {
@ -129,43 +131,44 @@ impl BlockChainClient for TestBlockChainClient {
}
}
}
if number == self.numbers.len() {
self.difficulty = self.difficulty + header.difficulty;
self.last_hash = header.hash();
self.blocks.insert(header.hash(), b);
self.numbers.insert(number, header.hash());
if number == self.numbers.read().unwrap().len() {
*self.difficulty.write().unwrap().deref_mut() += header.difficulty;
mem::replace(self.last_hash.write().unwrap().deref_mut(), header.hash());
self.blocks.write().unwrap().insert(header.hash(), b);
self.numbers.write().unwrap().insert(number, header.hash());
let mut parent_hash = header.parent_hash;
if number > 0 {
let mut n = number - 1;
while n > 0 && self.numbers[&n] != parent_hash {
*self.numbers.get_mut(&n).unwrap() = parent_hash.clone();
while n > 0 && self.numbers.read().unwrap()[&n] != parent_hash {
*self.numbers.write().unwrap().get_mut(&n).unwrap() = parent_hash.clone();
n -= 1;
parent_hash = Rlp::new(&self.blocks[&parent_hash]).val_at::<BlockHeader>(0).parent_hash;
parent_hash = Rlp::new(&self.blocks.read().unwrap()[&parent_hash]).val_at::<BlockHeader>(0).parent_hash;
}
}
}
else {
self.blocks.insert(header.hash(), b.to_vec());
self.blocks.write().unwrap().insert(header.hash(), b.to_vec());
}
Ok(())
}
fn queue_status(&self) -> BlockQueueStatus {
BlockQueueStatus {
fn queue_info(&self) -> BlockQueueInfo {
BlockQueueInfo {
full: false,
queue_size: 0,
}
}
fn clear_queue(&mut self) {
fn clear_queue(&self) {
}
fn chain_info(&self) -> BlockChainInfo {
BlockChainInfo {
total_difficulty: self.difficulty,
pending_total_difficulty: self.difficulty,
total_difficulty: *self.difficulty.read().unwrap(),
pending_total_difficulty: *self.difficulty.read().unwrap(),
genesis_hash: self.genesis_hash.clone(),
best_block_hash: self.last_hash.clone(),
best_block_number: self.blocks.len() as BlockNumber - 1,
best_block_hash: self.last_hash.read().unwrap().clone(),
best_block_number: self.blocks.read().unwrap().len() as BlockNumber - 1,
}
}
}
@ -208,7 +211,7 @@ impl<'p> SyncIo for TestIo<'p> {
Ok(())
}
fn chain(&mut self) -> &mut BlockChainClient {
fn chain(&self) -> &BlockChainClient {
self.chain
}
}
@ -272,7 +275,7 @@ impl TestNet {
trace!("----------------");
}
let mut p = self.peers.get_mut(peer).unwrap();
p.sync.maintain_sync(&mut TestIo::new(&mut p.chain, &mut p.queue, None));
p.sync._maintain_sync(&mut TestIo::new(&mut p.chain, &mut p.queue, None));
}
}
@ -297,7 +300,7 @@ fn full_sync_two_peers() {
net.peer_mut(2).chain.add_blocks(1000, false);
net.sync();
assert!(net.peer(0).chain.block_at(1000).is_some());
assert_eq!(net.peer(0).chain.blocks, net.peer(1).chain.blocks);
assert_eq!(net.peer(0).chain.blocks.read().unwrap().deref(), net.peer(1).chain.blocks.read().unwrap().deref());
}
#[test]
@ -310,7 +313,7 @@ fn full_sync_empty_blocks() {
}
net.sync();
assert!(net.peer(0).chain.block_at(1000).is_some());
assert_eq!(net.peer(0).chain.blocks, net.peer(1).chain.blocks);
assert_eq!(net.peer(0).chain.blocks.read().unwrap().deref(), net.peer(1).chain.blocks.read().unwrap().deref());
}
#[test]
@ -326,9 +329,9 @@ fn forked_sync() {
net.peer_mut(1).chain.add_blocks(100, false); //fork between 1 and 2
net.peer_mut(2).chain.add_blocks(10, true);
// peer 1 has the best chain of 601 blocks
let peer1_chain = net.peer(1).chain.numbers.clone();
let peer1_chain = net.peer(1).chain.numbers.read().unwrap().clone();
net.sync();
assert_eq!(net.peer(0).chain.numbers, peer1_chain);
assert_eq!(net.peer(1).chain.numbers, peer1_chain);
assert_eq!(net.peer(2).chain.numbers, peer1_chain);
assert_eq!(net.peer(0).chain.numbers.read().unwrap().deref(), &peer1_chain);
assert_eq!(net.peer(1).chain.numbers.read().unwrap().deref(), &peer1_chain);
assert_eq!(net.peer(2).chain.numbers.read().unwrap().deref(), &peer1_chain);
}

1
util/Cargo.toml
View File

@ -22,6 +22,7 @@ rust-crypto = "0.2.34"
elastic-array = "0.4"
heapsize = "0.2"
itertools = "0.4"
crossbeam = "0.2"
slab = { git = "https://github.com/arkpar/slab.git" }
sha3 = { path = "sha3" }
clippy = "*" # Always newest, since we use nightly

61
util/src/io/mod.rs
View File

@ -8,27 +8,28 @@
///
/// struct MyHandler;
///
/// #[derive(Clone)]
/// struct MyMessage {
/// data: u32
/// }
///
/// impl IoHandler<MyMessage> for MyHandler {
/// fn initialize(&mut self, io: &mut IoContext<MyMessage>) {
/// io.register_timer(1000).unwrap();
/// fn initialize(&self, io: &IoContext<MyMessage>) {
/// io.register_timer(0, 1000).unwrap();
/// }
///
/// fn timeout(&mut self, _io: &mut IoContext<MyMessage>, timer: TimerToken) {
/// fn timeout(&self, _io: &IoContext<MyMessage>, timer: TimerToken) {
/// println!("Timeout {}", timer);
/// }
///
/// fn message(&mut self, _io: &mut IoContext<MyMessage>, message: &mut MyMessage) {
/// fn message(&self, _io: &IoContext<MyMessage>, message: &MyMessage) {
/// println!("Message {}", message.data);
/// }
/// }
///
/// fn main () {
/// let mut service = IoService::<MyMessage>::start().expect("Error creating network service");
/// service.register_handler(Box::new(MyHandler)).unwrap();
/// service.register_handler(Arc::new(MyHandler)).unwrap();
///
/// // Wait for quit condition
/// // ...
@ -36,6 +37,9 @@
/// }
/// ```
mod service;
mod worker;
use mio::{EventLoop, Token};
#[derive(Debug)]
/// TODO [arkpar] Please document me
@ -44,7 +48,7 @@ pub enum IoError {
Mio(::std::io::Error),
}
impl<Message> From<::mio::NotifyError<service::IoMessage<Message>>> for IoError where Message: Send {
impl<Message> From<::mio::NotifyError<service::IoMessage<Message>>> for IoError where Message: Send + Clone {
fn from(_err: ::mio::NotifyError<service::IoMessage<Message>>) -> IoError {
IoError::Mio(::std::io::Error::new(::std::io::ErrorKind::ConnectionAborted, "Network IO notification error"))
}
@ -53,54 +57,63 @@ impl<Message> From<::mio::NotifyError<service::IoMessage<Message>>> for IoError
/// Generic IO handler.
/// All the handler function are called from within IO event loop.
/// `Message` type is used as notification data
pub trait IoHandler<Message>: Send where Message: Send + 'static {
pub trait IoHandler<Message>: Send + Sync where Message: Send + Sync + Clone + 'static {
/// Initialize the handler
fn initialize<'s>(&'s mut self, _io: &mut IoContext<'s, Message>) {}
fn initialize(&self, _io: &IoContext<Message>) {}
/// Timer function called after a timeout created with `HandlerIo::timeout`.
fn timeout<'s>(&'s mut self, _io: &mut IoContext<'s, Message>, _timer: TimerToken) {}
fn timeout(&self, _io: &IoContext<Message>, _timer: TimerToken) {}
/// Called when a broadcasted message is received. The message can only be sent from a different IO handler.
fn message<'s>(&'s mut self, _io: &mut IoContext<'s, Message>, _message: &'s mut Message) {} // TODO: make message immutable and provide internal channel for adding network handler
fn message(&self, _io: &IoContext<Message>, _message: &Message) {}
/// Called when an IO stream gets closed
fn stream_hup<'s>(&'s mut self, _io: &mut IoContext<'s, Message>, _stream: StreamToken) {}
fn stream_hup(&self, _io: &IoContext<Message>, _stream: StreamToken) {}
/// Called when an IO stream can be read from
fn stream_readable<'s>(&'s mut self, _io: &mut IoContext<'s, Message>, _stream: StreamToken) {}
fn stream_readable(&self, _io: &IoContext<Message>, _stream: StreamToken) {}
/// Called when an IO stream can be written to
fn stream_writable<'s>(&'s mut self, _io: &mut IoContext<'s, Message>, _stream: StreamToken) {}
fn stream_writable(&self, _io: &IoContext<Message>, _stream: StreamToken) {}
/// Register a new stream with the event loop
fn register_stream(&self, _stream: StreamToken, _reg: Token, _event_loop: &mut EventLoop<IoManager<Message>>) {}
/// Re-register a stream with the event loop
fn update_stream(&self, _stream: StreamToken, _reg: Token, _event_loop: &mut EventLoop<IoManager<Message>>) {}
}
/// TODO [arkpar] Please document me
pub type TimerToken = service::TimerToken;
pub use io::service::TimerToken;
/// TODO [arkpar] Please document me
pub type StreamToken = service::StreamToken;
pub use io::service::StreamToken;
/// TODO [arkpar] Please document me
pub type IoContext<'s, M> = service::IoContext<'s, M>;
pub use io::service::IoContext;
/// TODO [arkpar] Please document me
pub type IoService<M> = service::IoService<M>;
pub use io::service::IoService;
/// TODO [arkpar] Please document me
pub type IoChannel<M> = service::IoChannel<M>;
//pub const USER_TOKEN_START: usize = service::USER_TOKEN; // TODO: ICE in rustc 1.7.0-nightly (49c382779 2016-01-12)
pub use io::service::IoChannel;
/// TODO [arkpar] Please document me
pub use io::service::IoManager;
/// TODO [arkpar] Please document me
pub use io::service::TOKENS_PER_HANDLER;
#[cfg(test)]
mod tests {
use std::sync::Arc;
use io::*;
struct MyHandler;
#[derive(Clone)]
struct MyMessage {
data: u32
}
impl IoHandler<MyMessage> for MyHandler {
fn initialize(&mut self, io: &mut IoContext<MyMessage>) {
io.register_timer(1000).unwrap();
fn initialize(&self, io: &IoContext<MyMessage>) {
io.register_timer(0, 1000).unwrap();
}
fn timeout(&mut self, _io: &mut IoContext<MyMessage>, timer: TimerToken) {
fn timeout(&self, _io: &IoContext<MyMessage>, timer: TimerToken) {
println!("Timeout {}", timer);
}
fn message(&mut self, _io: &mut IoContext<MyMessage>, message: &mut MyMessage) {
fn message(&self, _io: &IoContext<MyMessage>, message: &MyMessage) {
println!("Message {}", message.data);
}
}
@ -108,7 +121,7 @@ mod tests {
#[test]
fn test_service_register_handler () {
let mut service = IoService::<MyMessage>::start().expect("Error creating network service");
service.register_handler(Box::new(MyHandler)).unwrap();
service.register_handler(Arc::new(MyHandler)).unwrap();
}
}

268
util/src/io/service.rs
View File

@ -1,148 +1,229 @@
use std::sync::*;
use std::thread::{self, JoinHandle};
use std::collections::HashMap;
use mio::*;
use mio::util::{Slab};
use hash::*;
use rlp::*;
use error::*;
use io::{IoError, IoHandler};
use arrayvec::*;
use crossbeam::sync::chase_lev;
use io::worker::{Worker, Work, WorkType};
/// Timer ID
pub type TimerToken = usize;
/// Timer ID
pub type StreamToken = usize;
/// IO Hadndler ID
pub type HandlerId = usize;
// Tokens
const MAX_USER_TIMERS: usize = 32;
const USER_TIMER: usize = 0;
const LAST_USER_TIMER: usize = USER_TIMER + MAX_USER_TIMERS - 1;
//const USER_TOKEN: usize = LAST_USER_TIMER + 1;
/// Maximum number of tokens a handler can use
pub const TOKENS_PER_HANDLER: usize = 16384;
/// Messages used to communicate with the event loop from other threads.
pub enum IoMessage<Message> where Message: Send + Sized {
#[derive(Clone)]
pub enum IoMessage<Message> where Message: Send + Clone + Sized {
/// Shutdown the event loop
Shutdown,
/// Register a new protocol handler.
AddHandler {
handler: Box<IoHandler<Message>+Send>,
handler: Arc<IoHandler<Message>+Send>,
},
AddTimer {
handler_id: HandlerId,
token: TimerToken,
delay: u64,
},
RemoveTimer {
handler_id: HandlerId,
token: TimerToken,
},
RegisterStream {
handler_id: HandlerId,
token: StreamToken,
},
UpdateStreamRegistration {
handler_id: HandlerId,
token: StreamToken,
},
/// Broadcast a message across all protocol handlers.
UserMessage(Message)
}
/// IO access point. This is passed to all IO handlers and provides an interface to the IO subsystem.
pub struct IoContext<'s, Message> where Message: Send + 'static {
timers: &'s mut Slab<UserTimer>,
/// Low leve MIO Event loop for custom handler registration.
pub event_loop: &'s mut EventLoop<IoManager<Message>>,
pub struct IoContext<Message> where Message: Send + Clone + 'static {
channel: IoChannel<Message>,
handler: HandlerId,
}
impl<'s, Message> IoContext<'s, Message> where Message: Send + 'static {
impl<Message> IoContext<Message> where Message: Send + Clone + 'static {
/// Create a new IO access point. Takes references to all the data that can be updated within the IO handler.
fn new(event_loop: &'s mut EventLoop<IoManager<Message>>, timers: &'s mut Slab<UserTimer>) -> IoContext<'s, Message> {
pub fn new(channel: IoChannel<Message>, handler: HandlerId) -> IoContext<Message> {
IoContext {
event_loop: event_loop,
timers: timers,
handler: handler,
channel: channel,
}
}
/// Register a new IO timer. Returns a new timer token. 'IoHandler::timeout' will be called with the token.
pub fn register_timer(&mut self, ms: u64) -> Result<TimerToken, UtilError> {
match self.timers.insert(UserTimer {
/// Register a new IO timer. 'IoHandler::timeout' will be called with the token.
pub fn register_timer(&self, token: TimerToken, ms: u64) -> Result<(), UtilError> {
try!(self.channel.send_io(IoMessage::AddTimer {
token: token,
delay: ms,
}) {
Ok(token) => {
self.event_loop.timeout_ms(token, ms).expect("Error registering user timer");
Ok(token.as_usize())
},
_ => { panic!("Max timers reached") }
}
handler_id: self.handler,
}));
Ok(())
}
/// Delete a timer.
pub fn clear_timer(&self, token: TimerToken) -> Result<(), UtilError> {
try!(self.channel.send_io(IoMessage::RemoveTimer {
token: token,
handler_id: self.handler,
}));
Ok(())
}
/// Register a new IO stream.
pub fn register_stream(&self, token: StreamToken) -> Result<(), UtilError> {
try!(self.channel.send_io(IoMessage::RegisterStream {
token: token,
handler_id: self.handler,
}));
Ok(())
}
/// Reregister an IO stream.
pub fn update_registration(&self, token: StreamToken) -> Result<(), UtilError> {
try!(self.channel.send_io(IoMessage::UpdateStreamRegistration {
token: token,
handler_id: self.handler,
}));
Ok(())
}
/// Broadcast a message to other IO clients
pub fn message(&mut self, message: Message) {
match self.event_loop.channel().send(IoMessage::UserMessage(message)) {
Ok(_) => {}
Err(e) => { panic!("Error sending io message {:?}", e); }
}
pub fn message(&self, message: Message) {
self.channel.send(message).expect("Error seding message");
}
/// Get message channel
pub fn channel(&self) -> IoChannel<Message> {
self.channel.clone()
}
}
#[derive(Clone)]
struct UserTimer {
delay: u64,
timeout: Timeout,
}
/// Root IO handler. Manages user handlers, messages and IO timers.
pub struct IoManager<Message> where Message: Send {
timers: Slab<UserTimer>,
handlers: Vec<Box<IoHandler<Message>>>,
pub struct IoManager<Message> where Message: Send + Sync {
timers: Arc<RwLock<HashMap<HandlerId, UserTimer>>>,
handlers: Vec<Arc<IoHandler<Message>>>,
_workers: Vec<Worker>,
worker_channel: chase_lev::Worker<Work<Message>>,
work_ready: Arc<Condvar>,
}
impl<Message> IoManager<Message> where Message: Send + 'static {
impl<Message> IoManager<Message> where Message: Send + Sync + Clone + 'static {
/// Creates a new instance and registers it with the event loop.
pub fn start(event_loop: &mut EventLoop<IoManager<Message>>) -> Result<(), UtilError> {
let (worker, stealer) = chase_lev::deque();
let num_workers = 4;
let work_ready_mutex = Arc::new(Mutex::new(()));
let work_ready = Arc::new(Condvar::new());
let workers = (0..num_workers).map(|i|
Worker::new(i, stealer.clone(), IoChannel::new(event_loop.channel()), work_ready.clone(), work_ready_mutex.clone())).collect();
let mut io = IoManager {
timers: Slab::new_starting_at(Token(USER_TIMER), MAX_USER_TIMERS),
timers: Arc::new(RwLock::new(HashMap::new())),
handlers: Vec::new(),
worker_channel: worker,
_workers: workers,
work_ready: work_ready,
};
try!(event_loop.run(&mut io));
Ok(())
}
}
impl<Message> Handler for IoManager<Message> where Message: Send + 'static {
impl<Message> Handler for IoManager<Message> where Message: Send + Clone + Sync + 'static {
type Timeout = Token;
type Message = IoMessage<Message>;
fn ready(&mut self, event_loop: &mut EventLoop<Self>, token: Token, events: EventSet) {
fn ready(&mut self, _event_loop: &mut EventLoop<Self>, token: Token, events: EventSet) {
let handler_index = token.as_usize() / TOKENS_PER_HANDLER;
let token_id = token.as_usize() % TOKENS_PER_HANDLER;
if handler_index >= self.handlers.len() {
panic!("Unexpected stream token: {}", token.as_usize());
}
let handler = self.handlers[handler_index].clone();
if events.is_hup() {
for h in &mut self.handlers {
h.stream_hup(&mut IoContext::new(event_loop, &mut self.timers), token.as_usize());
}
}
else if events.is_readable() {
for h in &mut self.handlers {
h.stream_readable(&mut IoContext::new(event_loop, &mut self.timers), token.as_usize());
}
}
else if events.is_writable() {
for h in &mut self.handlers {
h.stream_writable(&mut IoContext::new(event_loop, &mut self.timers), token.as_usize());
self.worker_channel.push(Work { work_type: WorkType::Hup, token: token_id, handler: handler.clone(), handler_id: handler_index });
}
else {
if events.is_readable() {
self.worker_channel.push(Work { work_type: WorkType::Readable, token: token_id, handler: handler.clone(), handler_id: handler_index });
}
if events.is_writable() {
self.worker_channel.push(Work { work_type: WorkType::Writable, token: token_id, handler: handler.clone(), handler_id: handler_index });
}
}
self.work_ready.notify_all();
}
fn timeout(&mut self, event_loop: &mut EventLoop<Self>, token: Token) {
match token.as_usize() {
USER_TIMER ... LAST_USER_TIMER => {
let delay = {
let timer = self.timers.get_mut(token).expect("Unknown user timer token");
timer.delay
};
for h in &mut self.handlers {
h.timeout(&mut IoContext::new(event_loop, &mut self.timers), token.as_usize());
}
event_loop.timeout_ms(token, delay).expect("Error re-registering user timer");
}
_ => { // Just pass the event down. IoHandler is supposed to re-register it if required.
for h in &mut self.handlers {
h.timeout(&mut IoContext::new(event_loop, &mut self.timers), token.as_usize());
}
}
let handler_index = token.as_usize() / TOKENS_PER_HANDLER;
let token_id = token.as_usize() % TOKENS_PER_HANDLER;
if handler_index >= self.handlers.len() {
panic!("Unexpected timer token: {}", token.as_usize());
}
if let Some(timer) = self.timers.read().unwrap().get(&token.as_usize()) {
event_loop.timeout_ms(token, timer.delay).expect("Error re-registering user timer");
let handler = self.handlers[handler_index].clone();
self.worker_channel.push(Work { work_type: WorkType::Timeout, token: token_id, handler: handler, handler_id: handler_index });
self.work_ready.notify_all();
}
}
fn notify(&mut self, event_loop: &mut EventLoop<Self>, msg: Self::Message) {
let mut m = msg;
match m {
match msg {
IoMessage::Shutdown => event_loop.shutdown(),
IoMessage::AddHandler {
handler,
} => {
self.handlers.push(handler);
self.handlers.last_mut().unwrap().initialize(&mut IoContext::new(event_loop, &mut self.timers));
IoMessage::AddHandler { handler } => {
let handler_id = {
self.handlers.push(handler.clone());
self.handlers.len() - 1
};
handler.initialize(&IoContext::new(IoChannel::new(event_loop.channel()), handler_id));
},
IoMessage::UserMessage(ref mut data) => {
for h in &mut self.handlers {
h.message(&mut IoContext::new(event_loop, &mut self.timers), data);
IoMessage::AddTimer { handler_id, token, delay } => {
let timer_id = token + handler_id * TOKENS_PER_HANDLER;
let timeout = event_loop.timeout_ms(Token(timer_id), delay).expect("Error registering user timer");
self.timers.write().unwrap().insert(timer_id, UserTimer { delay: delay, timeout: timeout });
},
IoMessage::RemoveTimer { handler_id, token } => {
let timer_id = token + handler_id * TOKENS_PER_HANDLER;
if let Some(timer) = self.timers.write().unwrap().remove(&timer_id) {
event_loop.clear_timeout(timer.timeout);
}
},
IoMessage::RegisterStream { handler_id, token } => {
let handler = self.handlers.get(handler_id).expect("Unknown handler id").clone();
handler.register_stream(token, Token(token + handler_id * TOKENS_PER_HANDLER), event_loop);
},
IoMessage::UpdateStreamRegistration { handler_id, token } => {
let handler = self.handlers.get(handler_id).expect("Unknown handler id").clone();
handler.update_stream(token, Token(token + handler_id * TOKENS_PER_HANDLER), event_loop);
},
IoMessage::UserMessage(data) => {
for n in 0 .. self.handlers.len() {
let handler = self.handlers[n].clone();
self.worker_channel.push(Work { work_type: WorkType::Message(data.clone()), token: 0, handler: handler, handler_id: n });
}
self.work_ready.notify_all();
}
}
}
@ -150,11 +231,19 @@ impl<Message> Handler for IoManager<Message> where Message: Send + 'static {
/// Allows sending messages into the event loop. All the IO handlers will get the message
/// in the `message` callback.
pub struct IoChannel<Message> where Message: Send {
pub struct IoChannel<Message> where Message: Send + Clone{
channel: Option<Sender<IoMessage<Message>>>
}
impl<Message> IoChannel<Message> where Message: Send {
impl<Message> Clone for IoChannel<Message> where Message: Send + Clone {
fn clone(&self) -> IoChannel<Message> {
IoChannel {
channel: self.channel.clone()
}
}
}
impl<Message> IoChannel<Message> where Message: Send + Clone {
/// Send a msessage through the channel
pub fn send(&self, message: Message) -> Result<(), IoError> {
if let Some(ref channel) = self.channel {
@ -163,20 +252,31 @@ impl<Message> IoChannel<Message> where Message: Send {
Ok(())
}
/// Send low level io message
pub fn send_io(&self, message: IoMessage<Message>) -> Result<(), IoError> {
if let Some(ref channel) = self.channel {
try!(channel.send(message))
}
Ok(())
}
/// Create a new channel to connected to event loop.
pub fn disconnected() -> IoChannel<Message> {
IoChannel { channel: None }
}
fn new(channel: Sender<IoMessage<Message>>) -> IoChannel<Message> {
IoChannel { channel: Some(channel) }
}
}
/// General IO Service. Starts an event loop and dispatches IO requests.
/// 'Message' is a notification message type
pub struct IoService<Message> where Message: Send + 'static {
pub struct IoService<Message> where Message: Send + Sync + Clone + 'static {
thread: Option<JoinHandle<()>>,
host_channel: Sender<IoMessage<Message>>
host_channel: Sender<IoMessage<Message>>,
}
impl<Message> IoService<Message> where Message: Send + 'static {
impl<Message> IoService<Message> where Message: Send + Sync + Clone + 'static {
/// Starts IO event loop
pub fn start() -> Result<IoService<Message>, UtilError> {
let mut event_loop = EventLoop::new().unwrap();
@ -191,7 +291,7 @@ impl<Message> IoService<Message> where Message: Send + 'static {
}
/// Regiter a IO hadnler with the event loop.
pub fn register_handler(&mut self, handler: Box<IoHandler<Message>+Send>) -> Result<(), IoError> {
pub fn register_handler(&mut self, handler: Arc<IoHandler<Message>+Send>) -> Result<(), IoError> {
try!(self.host_channel.send(IoMessage::AddHandler {
handler: handler,
}));
@ -210,10 +310,10 @@ impl<Message> IoService<Message> where Message: Send + 'static {
}
}
impl<Message> Drop for IoService<Message> where Message: Send {
impl<Message> Drop for IoService<Message> where Message: Send + Sync + Clone {
fn drop(&mut self) {
self.host_channel.send(IoMessage::Shutdown).unwrap();
self.thread.take().unwrap().join().unwrap();
self.thread.take().unwrap().join().ok();
}
}

99
util/src/io/worker.rs Normal file
View File

@ -0,0 +1,99 @@
use std::sync::*;
use std::mem;
use std::thread::{JoinHandle, self};
use std::sync::atomic::{AtomicBool, Ordering as AtomicOrdering};
use crossbeam::sync::chase_lev;
use io::service::{HandlerId, IoChannel, IoContext};
use io::{IoHandler};
pub enum WorkType<Message> {
Readable,
Writable,
Hup,
Timeout,
Message(Message)
}
pub struct Work<Message> {
pub work_type: WorkType<Message>,
pub token: usize,
pub handler_id: HandlerId,
pub handler: Arc<IoHandler<Message>>,
}
/// An IO worker thread
/// Sorts them ready for blockchain insertion.
pub struct Worker {
thread: Option<JoinHandle<()>>,
wait: Arc<Condvar>,
deleting: Arc<AtomicBool>,
}
impl Worker {
/// Creates a new worker instance.
pub fn new<Message>(index: usize,
stealer: chase_lev::Stealer<Work<Message>>,
channel: IoChannel<Message>,
wait: Arc<Condvar>,
wait_mutex: Arc<Mutex<()>>) -> Worker
where Message: Send + Sync + Clone + 'static {
let deleting = Arc::new(AtomicBool::new(false));
let mut worker = Worker {
thread: None,
wait: wait.clone(),
deleting: deleting.clone(),
};
worker.thread = Some(thread::Builder::new().name(format!("IO Worker #{}", index)).spawn(
move || Worker::work_loop(stealer, channel.clone(), wait, wait_mutex.clone(), deleting))
.expect("Error creating worker thread"));
worker
}
fn work_loop<Message>(stealer: chase_lev::Stealer<Work<Message>>,
channel: IoChannel<Message>, wait: Arc<Condvar>,
wait_mutex: Arc<Mutex<()>>,
deleting: Arc<AtomicBool>)
where Message: Send + Sync + Clone + 'static {
while !deleting.load(AtomicOrdering::Relaxed) {
{
let lock = wait_mutex.lock().unwrap();
let _ = wait.wait(lock).unwrap();
if deleting.load(AtomicOrdering::Relaxed) {
return;
}
}
while let chase_lev::Steal::Data(work) = stealer.steal() {
Worker::do_work(work, channel.clone());
}
}
}
fn do_work<Message>(work: Work<Message>, channel: IoChannel<Message>) where Message: Send + Sync + Clone + 'static {
match work.work_type {
WorkType::Readable => {
work.handler.stream_readable(&IoContext::new(channel, work.handler_id), work.token);
},
WorkType::Writable => {
work.handler.stream_writable(&IoContext::new(channel, work.handler_id), work.token);
}
WorkType::Hup => {
work.handler.stream_hup(&IoContext::new(channel, work.handler_id), work.token);
}
WorkType::Timeout => {
work.handler.timeout(&IoContext::new(channel, work.handler_id), work.token);
}
WorkType::Message(message) => {
work.handler.message(&IoContext::new(channel, work.handler_id), &message);
}
}
}
}
impl Drop for Worker {
fn drop(&mut self) {
self.deleting.store(true, AtomicOrdering::Relaxed);
self.wait.notify_all();
let thread = mem::replace(&mut self.thread, None).unwrap();
thread.join().ok();
}
}

10
util/src/journaldb.rs
View File

@ -34,6 +34,16 @@ impl JournalDB {
}
}
/// Create a new instance given a shared `backing` database.
pub fn new_with_arc(backing: Arc<DB>) -> JournalDB {
JournalDB {
forward: OverlayDB::new_with_arc(backing.clone()),
backing: backing,
inserts: vec![],
removes: vec![],
}
}
/// Create a new instance with an anonymous temporary database.
pub fn new_temp() -> JournalDB {
let mut dir = env::temp_dir();

1
util/src/lib.rs
View File

@ -54,6 +54,7 @@ extern crate crypto as rcrypto;
extern crate secp256k1;
extern crate arrayvec;
extern crate elastic_array;
extern crate crossbeam;
/// TODO [Gav Wood] Please document me
pub mod standard;

57
util/src/network/connection.rs
View File

@ -1,5 +1,5 @@
use std::collections::VecDeque;
use mio::{Handler, Token, EventSet, EventLoop, Timeout, PollOpt, TryRead, TryWrite};
use mio::{Handler, Token, EventSet, EventLoop, PollOpt, TryRead, TryWrite};
use mio::tcp::*;
use hash::*;
use sha3::*;
@ -7,6 +7,7 @@ use bytes::*;
use rlp::*;
use std::io::{self, Cursor, Read};
use error::*;
use io::{IoContext, StreamToken};
use network::error::NetworkError;
use network::handshake::Handshake;
use crypto;
@ -17,11 +18,12 @@ use rcrypto::buffer::*;
use tiny_keccak::Keccak;
const ENCRYPTED_HEADER_LEN: usize = 32;
const RECIEVE_PAYLOAD_TIMEOUT: u64 = 30000;
/// Low level tcp connection
pub struct Connection {
/// Connection id (token)
pub token: Token,
pub token: StreamToken,
/// Network socket
pub socket: TcpStream,
/// Receive buffer
@ -45,14 +47,14 @@ pub enum WriteStatus {
impl Connection {
/// Create a new connection with given id and socket.
pub fn new(token: Token, socket: TcpStream) -> Connection {
pub fn new(token: StreamToken, socket: TcpStream) -> Connection {
Connection {
token: token,
socket: socket,
send_queue: VecDeque::new(),
rec_buf: Bytes::new(),
rec_size: 0,
interest: EventSet::hup(),
interest: EventSet::hup() | EventSet::readable(),
}
}
@ -132,20 +134,19 @@ impl Connection {
}
/// Register this connection with the IO event loop.
pub fn register<Host: Handler>(&mut self, event_loop: &mut EventLoop<Host>) -> io::Result<()> {
trace!(target: "net", "connection register; token={:?}", self.token);
self.interest.insert(EventSet::readable());
event_loop.register(&self.socket, self.token, self.interest, PollOpt::edge() | PollOpt::oneshot()).or_else(|e| {
error!("Failed to register {:?}, {:?}", self.token, e);
pub fn register_socket<Host: Handler>(&self, reg: Token, event_loop: &mut EventLoop<Host>) -> io::Result<()> {
trace!(target: "net", "connection register; token={:?}", reg);
event_loop.register(&self.socket, reg, self.interest, PollOpt::edge() | PollOpt::oneshot()).or_else(|e| {
error!("Failed to register {:?}, {:?}", reg, e);
Err(e)
})
}
/// Update connection registration. Should be called at the end of the IO handler.
pub fn reregister<Host: Handler>(&mut self, event_loop: &mut EventLoop<Host>) -> io::Result<()> {
trace!(target: "net", "connection reregister; token={:?}", self.token);
event_loop.reregister( &self.socket, self.token, self.interest, PollOpt::edge() | PollOpt::oneshot()).or_else(|e| {
error!("Failed to reregister {:?}, {:?}", self.token, e);
pub fn update_socket<Host: Handler>(&self, reg: Token, event_loop: &mut EventLoop<Host>) -> io::Result<()> {
trace!(target: "net", "connection reregister; token={:?}", reg);
event_loop.reregister( &self.socket, reg, self.interest, PollOpt::edge() | PollOpt::oneshot()).or_else(|e| {
error!("Failed to reregister {:?}, {:?}", reg, e);
Err(e)
})
}
@ -182,8 +183,6 @@ pub struct EncryptedConnection {
ingress_mac: Keccak,
/// Read state
read_state: EncryptedConnectionState,
/// Disconnect timeout
idle_timeout: Option<Timeout>,
/// Protocol id for the last received packet
protocol_id: u16,
/// Payload expected to be received for the last header.
@ -192,7 +191,7 @@ pub struct EncryptedConnection {
impl EncryptedConnection {
/// Create an encrypted connection out of the handshake. Consumes a handshake object.
pub fn new(handshake: Handshake) -> Result<EncryptedConnection, UtilError> {
pub fn new(mut handshake: Handshake) -> Result<EncryptedConnection, UtilError> {
let shared = try!(crypto::ecdh::agree(handshake.ecdhe.secret(), &handshake.remote_public));
let mut nonce_material = H512::new();
if handshake.originated {
@ -227,6 +226,7 @@ impl EncryptedConnection {
ingress_mac.update(&mac_material);
ingress_mac.update(if handshake.originated { &handshake.ack_cipher } else { &handshake.auth_cipher });
handshake.connection.expect(ENCRYPTED_HEADER_LEN);
Ok(EncryptedConnection {
connection: handshake.connection,
encoder: encoder,
@ -235,7 +235,6 @@ impl EncryptedConnection {
egress_mac: egress_mac,
ingress_mac: ingress_mac,
read_state: EncryptedConnectionState::Header,
idle_timeout: None,
protocol_id: 0,
payload_len: 0
})
@ -337,13 +336,14 @@ impl EncryptedConnection {
}
/// Readable IO handler. Tracker receive status and returns decoded packet if avaialable.
pub fn readable<Host:Handler>(&mut self, event_loop: &mut EventLoop<Host>) -> Result<Option<Packet>, UtilError> {
self.idle_timeout.map(|t| event_loop.clear_timeout(t));
pub fn readable<Message>(&mut self, io: &IoContext<Message>) -> Result<Option<Packet>, UtilError> where Message: Send + Clone{
io.clear_timer(self.connection.token).unwrap();
match self.read_state {
EncryptedConnectionState::Header => {
if let Some(data) = try!(self.connection.readable()) {
try!(self.read_header(&data));
};
try!(io.register_timer(self.connection.token, RECIEVE_PAYLOAD_TIMEOUT));
}
Ok(None)
},
EncryptedConnectionState::Payload => {
@ -360,24 +360,15 @@ impl EncryptedConnection {
}
/// Writable IO handler. Processes send queeue.
pub fn writable<Host:Handler>(&mut self, event_loop: &mut EventLoop<Host>) -> Result<(), UtilError> {
self.idle_timeout.map(|t| event_loop.clear_timeout(t));
pub fn writable<Message>(&mut self, io: &IoContext<Message>) -> Result<(), UtilError> where Message: Send + Clone {
io.clear_timer(self.connection.token).unwrap();
try!(self.connection.writable());
Ok(())
}
/// Register this connection with the event handler.
pub fn register<Host:Handler<Timeout=Token>>(&mut self, event_loop: &mut EventLoop<Host>) -> Result<(), UtilError> {
self.connection.expect(ENCRYPTED_HEADER_LEN);
self.idle_timeout.map(|t| event_loop.clear_timeout(t));
self.idle_timeout = event_loop.timeout_ms(self.connection.token, 1800).ok();
try!(self.connection.reregister(event_loop));
Ok(())
}
/// Update connection registration. This should be called at the end of the event loop.
pub fn reregister<Host:Handler>(&mut self, event_loop: &mut EventLoop<Host>) -> Result<(), UtilError> {
try!(self.connection.reregister(event_loop));
pub fn update_socket<Host:Handler>(&self, reg: Token, event_loop: &mut EventLoop<Host>) -> Result<(), UtilError> {
try!(self.connection.update_socket(reg, event_loop));
Ok(())
}
}

8
util/src/network/discovery.rs
View File

@ -141,7 +141,7 @@ impl Discovery {
{
if count < BUCKET_SIZE {
count += 1;
found.entry(Discovery::distance(target, &n)).or_insert(Vec::new()).push(n);
found.entry(Discovery::distance(target, &n)).or_insert_with(Vec::new).push(n);
}
else {
break;
@ -151,7 +151,7 @@ impl Discovery {
for n in &buckets[tail as usize].nodes {
if count < BUCKET_SIZE {
count += 1;
found.entry(Discovery::distance(target, &n)).or_insert(Vec::new()).push(n);
found.entry(Discovery::distance(target, &n)).or_insert_with(Vec::new).push(n);
}
else {
break;
@ -170,7 +170,7 @@ impl Discovery {
for n in &buckets[head as usize].nodes {
if count < BUCKET_SIZE {
count += 1;
found.entry(Discovery::distance(target, &n)).or_insert(Vec::new()).push(n);
found.entry(Discovery::distance(target, &n)).or_insert_with(Vec::new).push(n);
}
else {
break;
@ -184,7 +184,7 @@ impl Discovery {
for n in &buckets[tail as usize].nodes {
if count < BUCKET_SIZE {
count += 1;
found.entry(Discovery::distance(target, &n)).or_insert(Vec::new()).push(n);
found.entry(Discovery::distance(target, &n)).or_insert_with(Vec::new).push(n);
}
else {
break;

6
util/src/network/error.rs
View File

@ -19,11 +19,17 @@ pub enum DisconnectReason
}
#[derive(Debug)]
/// Network error.
pub enum NetworkError {
/// Authentication error.
Auth,
/// Unrecognised protocol.
BadProtocol,
/// Peer not found.
PeerNotFound,
/// Peer is diconnected.
Disconnect(DisconnectReason),
/// Socket IO error.
Io(IoError),
}

36
util/src/network/handshake.rs
View File

@ -10,6 +10,7 @@ use network::host::{HostInfo};
use network::node::NodeId;
use error::*;
use network::error::NetworkError;
use io::{IoContext, StreamToken};
#[derive(PartialEq, Eq, Debug)]
enum HandshakeState {
@ -33,8 +34,6 @@ pub struct Handshake {
state: HandshakeState,
/// Outgoing or incoming connection
pub originated: bool,
/// Disconnect timeout
idle_timeout: Option<Timeout>,
/// ECDH ephemeral
pub ecdhe: KeyPair,
/// Connection nonce
@ -51,16 +50,16 @@ pub struct Handshake {
const AUTH_PACKET_SIZE: usize = 307;
const ACK_PACKET_SIZE: usize = 210;
const HANDSHAKE_TIMEOUT: u64 = 30000;
impl Handshake {
/// Create a new handshake object
pub fn new(token: Token, id: &NodeId, socket: TcpStream, nonce: &H256) -> Result<Handshake, UtilError> {
pub fn new(token: StreamToken, id: &NodeId, socket: TcpStream, nonce: &H256) -> Result<Handshake, UtilError> {
Ok(Handshake {
id: id.clone(),
connection: Connection::new(token, socket),
originated: false,
state: HandshakeState::New,
idle_timeout: None,
ecdhe: try!(KeyPair::create()),
nonce: nonce.clone(),
remote_public: Public::new(),
@ -71,8 +70,9 @@ impl Handshake {
}
/// Start a handhsake
pub fn start(&mut self, host: &HostInfo, originated: bool) -> Result<(), UtilError> {
pub fn start<Message>(&mut self, io: &IoContext<Message>, host: &HostInfo, originated: bool) -> Result<(), UtilError> where Message: Send + Clone{
self.originated = originated;
io.register_timer(self.connection.token, HANDSHAKE_TIMEOUT).ok();
if originated {
try!(self.write_auth(host));
}
@ -89,8 +89,8 @@ impl Handshake {
}
/// Readable IO handler. Drives the state change.
pub fn readable<Host:Handler>(&mut self, event_loop: &mut EventLoop<Host>, host: &HostInfo) -> Result<(), UtilError> {
self.idle_timeout.map(|t| event_loop.clear_timeout(t));
pub fn readable<Message>(&mut self, io: &IoContext<Message>, host: &HostInfo) -> Result<(), UtilError> where Message: Send + Clone {
io.clear_timer(self.connection.token).unwrap();
match self.state {
HandshakeState::ReadingAuth => {
if let Some(data) = try!(self.connection.readable()) {
@ -104,29 +104,33 @@ impl Handshake {
self.state = HandshakeState::StartSession;
};
},
HandshakeState::StartSession => {},
_ => { panic!("Unexpected state"); }
}
if self.state != HandshakeState::StartSession {
try!(self.connection.reregister(event_loop));
try!(io.update_registration(self.connection.token));
}
Ok(())
}
/// Writabe IO handler.
pub fn writable<Host:Handler>(&mut self, event_loop: &mut EventLoop<Host>, _host: &HostInfo) -> Result<(), UtilError> {
self.idle_timeout.map(|t| event_loop.clear_timeout(t));
pub fn writable<Message>(&mut self, io: &IoContext<Message>, _host: &HostInfo) -> Result<(), UtilError> where Message: Send + Clone {
io.clear_timer(self.connection.token).unwrap();
try!(self.connection.writable());
if self.state != HandshakeState::StartSession {
try!(self.connection.reregister(event_loop));
io.update_registration(self.connection.token).unwrap();
}
Ok(())
}
/// Register the IO handler with the event loop
pub fn register<Host:Handler<Timeout=Token>>(&mut self, event_loop: &mut EventLoop<Host>) -> Result<(), UtilError> {
self.idle_timeout.map(|t| event_loop.clear_timeout(t));
self.idle_timeout = event_loop.timeout_ms(self.connection.token, 1800).ok();
try!(self.connection.register(event_loop));
/// Register the socket with the event loop
pub fn register_socket<Host:Handler<Timeout=Token>>(&self, reg: Token, event_loop: &mut EventLoop<Host>) -> Result<(), UtilError> {
try!(self.connection.register_socket(reg, event_loop));
Ok(())
}
pub fn update_socket<Host:Handler<Timeout=Token>>(&self, reg: Token, event_loop: &mut EventLoop<Host>) -> Result<(), UtilError> {
try!(self.connection.update_socket(reg, event_loop));
Ok(())
}

609
util/src/network/host.rs
View File

@ -1,8 +1,9 @@
use std::mem;
use std::net::{SocketAddr};
use std::collections::{HashMap};
use std::hash::{Hasher};
use std::str::{FromStr};
use std::sync::*;
use std::ops::*;
use mio::*;
use mio::tcp::*;
use mio::udp::*;
@ -64,19 +65,25 @@ pub type PacketId = u8;
pub type ProtocolId = &'static str;
/// Messages used to communitate with the event loop from other threads.
pub enum NetworkIoMessage<Message> where Message: Send {
#[derive(Clone)]
pub enum NetworkIoMessage<Message> where Message: Send + Sync + Clone {
/// Register a new protocol handler.
AddHandler {
handler: Option<Box<NetworkProtocolHandler<Message>+Send>>,
/// Handler shared instance.
handler: Arc<NetworkProtocolHandler<Message> + Sync>,
/// Protocol Id.
protocol: ProtocolId,
/// Supported protocol versions.
versions: Vec<u8>,
},
/// Send data over the network.
Send {
peer: PeerId,
packet_id: PacketId,
/// Register a new protocol timer
AddTimer {
/// Protocol Id.
protocol: ProtocolId,
data: Vec<u8>,
/// Timer token.
token: TimerToken,
/// Timer delay in milliseconds.
delay: u64,
},
/// User message
User(Message),
@ -104,46 +111,45 @@ impl Encodable for CapabilityInfo {
}
/// IO access point. This is passed to all IO handlers and provides an interface to the IO subsystem.
pub struct NetworkContext<'s, 'io, Message> where Message: Send + 'static, 'io: 's {
io: &'s mut IoContext<'io, NetworkIoMessage<Message>>,
pub struct NetworkContext<'s, Message> where Message: Send + Sync + Clone + 'static, 's {
io: &'s IoContext<NetworkIoMessage<Message>>,
protocol: ProtocolId,
connections: &'s mut Slab<ConnectionEntry>,
timers: &'s mut HashMap<TimerToken, ProtocolId>,
connections: Arc<RwLock<Slab<SharedConnectionEntry>>>,
session: Option<StreamToken>,
}
impl<'s, 'io, Message> NetworkContext<'s, 'io, Message> where Message: Send + 'static, {
impl<'s, Message> NetworkContext<'s, Message> where Message: Send + Sync + Clone + 'static, {
/// Create a new network IO access point. Takes references to all the data that can be updated within the IO handler.
fn new(io: &'s mut IoContext<'io, NetworkIoMessage<Message>>,
fn new(io: &'s IoContext<NetworkIoMessage<Message>>,
protocol: ProtocolId,
session: Option<StreamToken>, connections: &'s mut Slab<ConnectionEntry>,
timers: &'s mut HashMap<TimerToken, ProtocolId>) -> NetworkContext<'s, 'io, Message> {
session: Option<StreamToken>, connections: Arc<RwLock<Slab<SharedConnectionEntry>>>) -> NetworkContext<'s, Message> {
NetworkContext {
io: io,
protocol: protocol,
session: session,
connections: connections,
timers: timers,
}
}
/// Send a packet over the network to another peer.
pub fn send(&mut self, peer: PeerId, packet_id: PacketId, data: Vec<u8>) -> Result<(), UtilError> {
match self.connections.get_mut(peer) {
Some(&mut ConnectionEntry::Session(ref mut s)) => {
s.send_packet(self.protocol, packet_id as u8, &data).unwrap_or_else(|e| {
warn!(target: "net", "Send error: {:?}", e);
}); //TODO: don't copy vector data
},
_ => {
warn!(target: "net", "Send: Peer does not exist");
pub fn send(&self, peer: PeerId, packet_id: PacketId, data: Vec<u8>) -> Result<(), UtilError> {
if let Some(connection) = self.connections.read().unwrap().get(peer).cloned() {
match *connection.lock().unwrap().deref_mut() {
ConnectionEntry::Session(ref mut s) => {
s.send_packet(self.protocol, packet_id as u8, &data).unwrap_or_else(|e| {
warn!(target: "net", "Send error: {:?}", e);
}); //TODO: don't copy vector data
},
_ => warn!(target: "net", "Send: Peer is not connected yet")
}
} else {
warn!(target: "net", "Send: Peer does not exist")
}
Ok(())
}
/// Respond to a current network message. Panics if no there is no packet in the context.
pub fn respond(&mut self, packet_id: PacketId, data: Vec<u8>) -> Result<(), UtilError> {
pub fn respond(&self, packet_id: PacketId, data: Vec<u8>) -> Result<(), UtilError> {
match self.session {
Some(session) => self.send(session, packet_id, data),
None => {
@ -153,31 +159,28 @@ impl<'s, 'io, Message> NetworkContext<'s, 'io, Message> where Message: Send + 's
}
/// Disable current protocol capability for given peer. If no capabilities left peer gets disconnected.
pub fn disable_peer(&mut self, _peer: PeerId) {
pub fn disable_peer(&self, _peer: PeerId) {
//TODO: remove capability, disconnect if no capabilities left
}
/// Register a new IO timer. Returns a new timer token. 'NetworkProtocolHandler::timeout' will be called with the token.
pub fn register_timer(&mut self, ms: u64) -> Result<TimerToken, UtilError>{
match self.io.register_timer(ms) {
Ok(token) => {
self.timers.insert(token, self.protocol);
Ok(token)
},
e => e,
}
/// Register a new IO timer. 'IoHandler::timeout' will be called with the token.
pub fn register_timer(&self, token: TimerToken, ms: u64) -> Result<(), UtilError> {
self.io.message(NetworkIoMessage::AddTimer {
token: token,
delay: ms,
protocol: self.protocol,
});
Ok(())
}
/// Returns peer identification string
pub fn peer_info(&self, peer: PeerId) -> String {
match self.connections.get(peer) {
Some(&ConnectionEntry::Session(ref s)) => {
s.info.client_version.clone()
},
_ => {
"unknown".to_owned()
if let Some(connection) = self.connections.read().unwrap().get(peer).cloned() {
if let ConnectionEntry::Session(ref s) = *connection.lock().unwrap().deref() {
return s.info.client_version.clone()
}
}
"unknown".to_owned()
}
}
@ -222,26 +225,35 @@ enum ConnectionEntry {
Session(Session)
}
/// Root IO handler. Manages protocol handlers, IO timers and network connections.
pub struct Host<Message> where Message: Send {
pub info: HostInfo,
udp_socket: UdpSocket,
listener: TcpListener,
connections: Slab<ConnectionEntry>,
timers: HashMap<TimerToken, ProtocolId>,
nodes: HashMap<NodeId, Node>,
handlers: HashMap<ProtocolId, Box<NetworkProtocolHandler<Message>>>,
type SharedConnectionEntry = Arc<Mutex<ConnectionEntry>>;
#[derive(Copy, Clone)]
struct ProtocolTimer {
pub protocol: ProtocolId,
pub token: TimerToken, // Handler level token
}
impl<Message> Host<Message> where Message: Send {
/// Root IO handler. Manages protocol handlers, IO timers and network connections.
pub struct Host<Message> where Message: Send + Sync + Clone {
pub info: RwLock<HostInfo>,
udp_socket: Mutex<UdpSocket>,
tcp_listener: Mutex<TcpListener>,
connections: Arc<RwLock<Slab<SharedConnectionEntry>>>,
nodes: RwLock<HashMap<NodeId, Node>>,
handlers: RwLock<HashMap<ProtocolId, Arc<NetworkProtocolHandler<Message>>>>,
timers: RwLock<HashMap<TimerToken, ProtocolTimer>>,
timer_counter: RwLock<usize>,
}
impl<Message> Host<Message> where Message: Send + Sync + Clone {
pub fn new() -> Host<Message> {
let config = NetworkConfiguration::new();
let addr = config.listen_address;
// Setup the server socket
let listener = TcpListener::bind(&addr).unwrap();
let tcp_listener = TcpListener::bind(&addr).unwrap();
let udp_socket = UdpSocket::bound(&addr).unwrap();
Host::<Message> {
info: HostInfo {
let mut host = Host::<Message> {
info: RwLock::new(HostInfo {
keys: KeyPair::create().unwrap(),
config: config,
nonce: H256::random(),
@ -249,39 +261,64 @@ impl<Message> Host<Message> where Message: Send {
client_version: "parity".to_owned(),
listen_port: 0,
capabilities: Vec::new(),
},
udp_socket: udp_socket,
listener: listener,
connections: Slab::new_starting_at(FIRST_CONNECTION, MAX_CONNECTIONS),
timers: HashMap::new(),
nodes: HashMap::new(),
handlers: HashMap::new(),
}
}),
udp_socket: Mutex::new(udp_socket),
tcp_listener: Mutex::new(tcp_listener),
connections: Arc::new(RwLock::new(Slab::new_starting_at(FIRST_CONNECTION, MAX_CONNECTIONS))),
nodes: RwLock::new(HashMap::new()),
handlers: RwLock::new(HashMap::new()),
timers: RwLock::new(HashMap::new()),
timer_counter: RwLock::new(LAST_CONNECTION + 1),
};
let port = host.info.read().unwrap().config.listen_address.port();
host.info.write().unwrap().deref_mut().listen_port = port;
/*
match ::ifaces::Interface::get_all().unwrap().into_iter().filter(|x| x.kind == ::ifaces::Kind::Packet && x.addr.is_some()).next() {
Some(iface) => config.public_address = iface.addr.unwrap(),
None => warn!("No public network interface"),
*/
// self.add_node("enode://a9a921de2ff09a9a4d38b623c67b2d6b477a8e654ae95d874750cbbcb31b33296496a7b4421934e2629269e180823e52c15c2b19fc59592ec51ffe4f2de76ed7@127.0.0.1:30303");
// GO bootnodes
host.add_node("enode://a979fb575495b8d6db44f750317d0f4622bf4c2aa3365d6af7c284339968eef29b69ad0dce72a4d8db5ebb4968de0e3bec910127f134779fbcb0cb6d3331163c@52.16.188.185:30303"); // IE
host.add_node("enode://de471bccee3d042261d52e9bff31458daecc406142b401d4cd848f677479f73104b9fdeb090af9583d3391b7f10cb2ba9e26865dd5fca4fcdc0fb1e3b723c786@54.94.239.50:30303"); // BR
host.add_node("enode://1118980bf48b0a3640bdba04e0fe78b1add18e1cd99bf22d53daac1fd9972ad650df52176e7c7d89d1114cfef2bc23a2959aa54998a46afcf7d91809f0855082@52.74.57.123:30303"); // SG
// ETH/DEV cpp-ethereum (poc-9.ethdev.com)
host.add_node("enode://979b7fa28feeb35a4741660a16076f1943202cb72b6af70d327f053e248bab9ba81760f39d0701ef1d8f89cc1fbd2cacba0710a12cd5314d5e0c9021aa3637f9@5.1.83.226:30303");
host
}
fn add_node(&mut self, id: &str) {
pub fn add_node(&mut self, id: &str) {
match Node::from_str(id) {
Err(e) => { warn!("Could not add node: {:?}", e); },
Ok(n) => {
self.nodes.insert(n.id.clone(), n);
self.nodes.write().unwrap().insert(n.id.clone(), n);
}
}
}
fn maintain_network(&mut self, io: &mut IoContext<NetworkIoMessage<Message>>) {
pub fn client_version(&self) -> String {
self.info.read().unwrap().client_version.clone()
}
pub fn client_id(&self) -> NodeId {
self.info.read().unwrap().id().clone()
}
fn maintain_network(&self, io: &IoContext<NetworkIoMessage<Message>>) {
self.connect_peers(io);
io.event_loop.timeout_ms(Token(IDLE), MAINTENANCE_TIMEOUT).unwrap();
}
fn have_session(&self, id: &NodeId) -> bool {
self.connections.iter().any(|e| match *e { ConnectionEntry::Session(ref s) => s.info.id.eq(&id), _ => false })
self.connections.read().unwrap().iter().any(|e| match *e.lock().unwrap().deref() { ConnectionEntry::Session(ref s) => s.info.id.eq(&id), _ => false })
}
fn connecting_to(&self, id: &NodeId) -> bool {
self.connections.iter().any(|e| match *e { ConnectionEntry::Handshake(ref h) => h.id.eq(&id), _ => false })
self.connections.read().unwrap().iter().any(|e| match *e.lock().unwrap().deref() { ConnectionEntry::Handshake(ref h) => h.id.eq(&id), _ => false })
}
fn connect_peers(&mut self, io: &mut IoContext<NetworkIoMessage<Message>>) {
fn connect_peers(&self, io: &IoContext<NetworkIoMessage<Message>>) {
struct NodeInfo {
id: NodeId,
peer_type: PeerType
@ -292,13 +329,14 @@ impl<Message> Host<Message> where Message: Send {
let mut req_conn = 0;
//TODO: use nodes from discovery here
//for n in self.node_buckets.iter().flat_map(|n| &n.nodes).map(|id| NodeInfo { id: id.clone(), peer_type: self.nodes.get(id).unwrap().peer_type}) {
for n in self.nodes.values().map(|n| NodeInfo { id: n.id.clone(), peer_type: n.peer_type }) {
let pin = self.info.read().unwrap().deref().config.pin;
for n in self.nodes.read().unwrap().values().map(|n| NodeInfo { id: n.id.clone(), peer_type: n.peer_type }) {
let connected = self.have_session(&n.id) || self.connecting_to(&n.id);
let required = n.peer_type == PeerType::Required;
if connected && required {
req_conn += 1;
}
else if !connected && (!self.info.config.pin || required) {
else if !connected && (!pin || required) {
to_connect.push(n);
}
}
@ -312,8 +350,7 @@ impl<Message> Host<Message> where Message: Send {
}
}
if !self.info.config.pin
{
if !pin {
let pending_count = 0; //TODO:
let peer_count = 0;
let mut open_slots = IDEAL_PEERS - peer_count - pending_count + req_conn;
@ -329,23 +366,26 @@ impl<Message> Host<Message> where Message: Send {
}
#[allow(single_match)]
fn connect_peer(&mut self, id: &NodeId, io: &mut IoContext<NetworkIoMessage<Message>>) {
#[allow(block_in_if_condition_stmt)]
fn connect_peer(&self, id: &NodeId, io: &IoContext<NetworkIoMessage<Message>>) {
if self.have_session(id)
{
warn!("Aborted connect. Node already connected.");
return;
}
if self.connecting_to(id)
{
if self.connecting_to(id) {
warn!("Aborted connect. Node already connecting.");
return;
}
let socket = {
let node = self.nodes.get_mut(id).unwrap();
node.last_attempted = Some(::time::now());
match TcpStream::connect(&node.endpoint.address) {
let address = {
let mut nodes = self.nodes.write().unwrap();
let node = nodes.get_mut(id).unwrap();
node.last_attempted = Some(::time::now());
node.endpoint.address
};
match TcpStream::connect(&address) {
Ok(socket) => socket,
Err(_) => {
warn!("Cannot connect to node");
@ -354,222 +394,182 @@ impl<Message> Host<Message> where Message: Send {
}
};
let nonce = self.info.next_nonce();
match self.connections.insert_with(|token| ConnectionEntry::Handshake(Handshake::new(Token(token), id, socket, &nonce).expect("Can't create handshake"))) {
Some(token) => {
match self.connections.get_mut(token) {
Some(&mut ConnectionEntry::Handshake(ref mut h)) => {
h.start(&self.info, true)
.and_then(|_| h.register(io.event_loop))
.unwrap_or_else (|e| {
debug!(target: "net", "Handshake create error: {:?}", e);
});
},
_ => {}
}
},
None => { warn!("Max connections reached") }
let nonce = self.info.write().unwrap().next_nonce();
if self.connections.write().unwrap().insert_with(|token| {
let mut handshake = Handshake::new(token, id, socket, &nonce).expect("Can't create handshake");
handshake.start(io, &self.info.read().unwrap(), true).and_then(|_| io.register_stream(token)).unwrap_or_else (|e| {
debug!(target: "net", "Handshake create error: {:?}", e);
});
Arc::new(Mutex::new(ConnectionEntry::Handshake(handshake)))
}).is_none() {
warn!("Max connections reached");
}
}
fn accept(&mut self, _io: &mut IoContext<NetworkIoMessage<Message>>) {
fn accept(&self, _io: &IoContext<NetworkIoMessage<Message>>) {
trace!(target: "net", "accept");
}
#[allow(single_match)]
fn connection_writable<'s>(&'s mut self, token: StreamToken, io: &mut IoContext<'s, NetworkIoMessage<Message>>) {
let mut kill = false;
fn connection_writable(&self, token: StreamToken, io: &IoContext<NetworkIoMessage<Message>>) {
let mut create_session = false;
match self.connections.get_mut(token) {
Some(&mut ConnectionEntry::Handshake(ref mut h)) => {
h.writable(io.event_loop, &self.info).unwrap_or_else(|e| {
debug!(target: "net", "Handshake write error: {:?}", e);
kill = true;
});
create_session = h.done();
},
Some(&mut ConnectionEntry::Session(ref mut s)) => {
s.writable(io.event_loop, &self.info).unwrap_or_else(|e| {
debug!(target: "net", "Session write error: {:?}", e);
kill = true;
});
let mut kill = false;
if let Some(connection) = self.connections.read().unwrap().get(token).cloned() {
match *connection.lock().unwrap().deref_mut() {
ConnectionEntry::Handshake(ref mut h) => {
match h.writable(io, &self.info.read().unwrap()) {
Err(e) => {
debug!(target: "net", "Handshake write error: {:?}", e);
kill = true;
},
Ok(_) => ()
}
if h.done() {
create_session = true;
}
},
ConnectionEntry::Session(ref mut s) => {
match s.writable(io, &self.info.read().unwrap()) {
Err(e) => {
debug!(target: "net", "Session write error: {:?}", e);
kill = true;
},
Ok(_) => ()
}
io.update_registration(token).unwrap_or_else(|e| debug!(target: "net", "Session registration error: {:?}", e));
}
}
_ => {
warn!(target: "net", "Received event for unknown connection");
}
}
}
if kill {
self.kill_connection(token, io);
self.kill_connection(token, io); //TODO: mark connection as dead an check in kill_connection
return;
} else if create_session {
self.start_session(token, io);
}
match self.connections.get_mut(token) {
Some(&mut ConnectionEntry::Session(ref mut s)) => {
s.reregister(io.event_loop).unwrap_or_else(|e| debug!(target: "net", "Session registration error: {:?}", e));
},
_ => (),
io.update_registration(token).unwrap_or_else(|e| debug!(target: "net", "Session registration error: {:?}", e));
}
}
fn connection_closed<'s>(&'s mut self, token: TimerToken, io: &mut IoContext<'s, NetworkIoMessage<Message>>) {
fn connection_closed(&self, token: TimerToken, io: &IoContext<NetworkIoMessage<Message>>) {
self.kill_connection(token, io);
}
fn connection_readable<'s>(&'s mut self, token: StreamToken, io: &mut IoContext<'s, NetworkIoMessage<Message>>) {
let mut kill = false;
let mut create_session = false;
fn connection_readable(&self, token: StreamToken, io: &IoContext<NetworkIoMessage<Message>>) {
let mut ready_data: Vec<ProtocolId> = Vec::new();
let mut packet_data: Option<(ProtocolId, PacketId, Vec<u8>)> = None;
match self.connections.get_mut(token) {
Some(&mut ConnectionEntry::Handshake(ref mut h)) => {
h.readable(io.event_loop, &self.info).unwrap_or_else(|e| {
debug!(target: "net", "Handshake read error: {:?}", e);
kill = true;
});
create_session = h.done();
},
Some(&mut ConnectionEntry::Session(ref mut s)) => {
let sd = { s.readable(io.event_loop, &self.info).unwrap_or_else(|e| {
debug!(target: "net", "Session read error: {:?}", e);
kill = true;
SessionData::None
}) };
match sd {
SessionData::Ready => {
for (p, _) in &mut self.handlers {
if s.have_capability(p) {
ready_data.push(p);
let mut create_session = false;
let mut kill = false;
if let Some(connection) = self.connections.read().unwrap().get(token).cloned() {
match *connection.lock().unwrap().deref_mut() {
ConnectionEntry::Handshake(ref mut h) => {
if let Err(e) = h.readable(io, &self.info.read().unwrap()) {
debug!(target: "net", "Handshake read error: {:?}", e);
kill = true;
}
if h.done() {
create_session = true;
}
},
ConnectionEntry::Session(ref mut s) => {
match s.readable(io, &self.info.read().unwrap()) {
Err(e) => {
debug!(target: "net", "Handshake read error: {:?}", e);
kill = true;
},
Ok(SessionData::Ready) => {
for (p, _) in self.handlers.read().unwrap().iter() {
if s.have_capability(p) {
ready_data.push(p);
}
}
}
},
SessionData::Packet {
data,
protocol,
packet_id,
} => {
match self.handlers.get_mut(protocol) {
None => { warn!(target: "net", "No handler found for protocol: {:?}", protocol) },
Some(_) => packet_data = Some((protocol, packet_id, data)),
}
},
SessionData::None => {},
}
}
_ => {
warn!(target: "net", "Received event for unknown connection");
}
}
if kill {
self.kill_connection(token, io);
return;
}
if create_session {
self.start_session(token, io);
}
for p in ready_data {
let mut h = self.handlers.get_mut(p).unwrap();
h.connected(&mut NetworkContext::new(io, p, Some(token), &mut self.connections, &mut self.timers), &token);
}
if let Some((p, packet_id, data)) = packet_data {
let mut h = self.handlers.get_mut(p).unwrap();
h.read(&mut NetworkContext::new(io, p, Some(token), &mut self.connections, &mut self.timers), &token, packet_id, &data[1..]);
}
if let Some(&mut ConnectionEntry::Session(ref mut s)) = self.connections.get_mut(token) {
s.reregister(io.event_loop).unwrap_or_else(|e| debug!(target: "net", "Session registration error: {:?}", e));
}
}
fn start_session(&mut self, token: StreamToken, io: &mut IoContext<NetworkIoMessage<Message>>) {
let info = &self.info;
// TODO: use slab::replace_with (currently broken)
/*
match self.connections.remove(token) {
Some(ConnectionEntry::Handshake(h)) => {
match Session::new(h, io.event_loop, info) {
Ok(session) => {
assert!(token == self.connections.insert(ConnectionEntry::Session(session)).ok().unwrap());
},
Err(e) => {
debug!(target: "net", "Session construction error: {:?}", e);
},
Ok(SessionData::Packet {
data,
protocol,
packet_id,
}) => {
match self.handlers.read().unwrap().get(protocol) {
None => { warn!(target: "net", "No handler found for protocol: {:?}", protocol) },
Some(_) => packet_data = Some((protocol, packet_id, data)),
}
},
Ok(SessionData::None) => {},
}
}
},
_ => panic!("Error updating slab with session")
}*/
self.connections.replace_with(token, |c| {
match c {
ConnectionEntry::Handshake(h) => Session::new(h, io.event_loop, info)
.map(|s| Some(ConnectionEntry::Session(s)))
.unwrap_or_else(|e| {
debug!(target: "net", "Session construction error: {:?}", e);
None
}),
_ => { panic!("No handshake to create a session from"); }
}
}).expect("Error updating slab with session");
}
if kill {
self.kill_connection(token, io); //TODO: mark connection as dead an check in kill_connection
return;
} else if create_session {
self.start_session(token, io);
io.update_registration(token).unwrap_or_else(|e| debug!(target: "net", "Session registration error: {:?}", e));
}
for p in ready_data {
let h = self.handlers.read().unwrap().get(p).unwrap().clone();
h.connected(&NetworkContext::new(io, p, Some(token), self.connections.clone()), &token);
}
if let Some((p, packet_id, data)) = packet_data {
let h = self.handlers.read().unwrap().get(p).unwrap().clone();
h.read(&NetworkContext::new(io, p, Some(token), self.connections.clone()), &token, packet_id, &data[1..]);
}
io.update_registration(token).unwrap_or_else(|e| debug!(target: "net", "Token registration error: {:?}", e));
}
fn connection_timeout<'s>(&'s mut self, token: StreamToken, io: &mut IoContext<'s, NetworkIoMessage<Message>>) {
fn start_session(&self, token: StreamToken, io: &IoContext<NetworkIoMessage<Message>>) {
self.connections.write().unwrap().replace_with(token, |c| {
match Arc::try_unwrap(c).ok().unwrap().into_inner().unwrap() {
ConnectionEntry::Handshake(h) => {
let session = Session::new(h, io, &self.info.read().unwrap()).expect("Session creation error");
io.update_registration(token).expect("Error updating session registration");
Some(Arc::new(Mutex::new(ConnectionEntry::Session(session))))
},
_ => { None } // handshake expired
}
}).ok();
}
fn connection_timeout(&self, token: StreamToken, io: &IoContext<NetworkIoMessage<Message>>) {
self.kill_connection(token, io)
}
fn kill_connection<'s>(&'s mut self, token: StreamToken, io: &mut IoContext<'s, NetworkIoMessage<Message>>) {
fn kill_connection(&self, token: StreamToken, io: &IoContext<NetworkIoMessage<Message>>) {
let mut to_disconnect: Vec<ProtocolId> = Vec::new();
let mut remove = true;
match self.connections.get_mut(token) {
Some(&mut ConnectionEntry::Handshake(_)) => (), // just abandon handshake
Some(&mut ConnectionEntry::Session(ref mut s)) if s.is_ready() => {
for (p, _) in &mut self.handlers {
if s.have_capability(p) {
to_disconnect.push(p);
}
{
let mut connections = self.connections.write().unwrap();
if let Some(connection) = connections.get(token).cloned() {
match *connection.lock().unwrap().deref_mut() {
ConnectionEntry::Handshake(_) => {
connections.remove(token);
},
ConnectionEntry::Session(ref mut s) if s.is_ready() => {
for (p, _) in self.handlers.read().unwrap().iter() {
if s.have_capability(p) {
to_disconnect.push(p);
}
}
connections.remove(token);
},
_ => {},
}
},
_ => {
remove = false;
},
}
}
for p in to_disconnect {
let mut h = self.handlers.get_mut(p).unwrap();
h.disconnected(&mut NetworkContext::new(io, p, Some(token), &mut self.connections, &mut self.timers), &token);
}
if remove {
self.connections.remove(token);
let h = self.handlers.read().unwrap().get(p).unwrap().clone();
h.disconnected(&NetworkContext::new(io, p, Some(token), self.connections.clone()), &token);
}
}
}
impl<Message> IoHandler<NetworkIoMessage<Message>> for Host<Message> where Message: Send + 'static {
impl<Message> IoHandler<NetworkIoMessage<Message>> for Host<Message> where Message: Send + Sync + Clone + 'static {
/// Initialize networking
fn initialize(&mut self, io: &mut IoContext<NetworkIoMessage<Message>>) {
/*
match ::ifaces::Interface::get_all().unwrap().into_iter().filter(|x| x.kind == ::ifaces::Kind::Packet && x.addr.is_some()).next() {
Some(iface) => config.public_address = iface.addr.unwrap(),
None => warn!("No public network interface"),
*/
// Start listening for incoming connections
io.event_loop.register(&self.listener, Token(TCP_ACCEPT), EventSet::readable(), PollOpt::edge()).unwrap();
io.event_loop.timeout_ms(Token(IDLE), MAINTENANCE_TIMEOUT).unwrap();
// open the udp socket
io.event_loop.register(&self.udp_socket, Token(NODETABLE_RECEIVE), EventSet::readable(), PollOpt::edge()).unwrap();
io.event_loop.timeout_ms(Token(NODETABLE_MAINTAIN), 7200).unwrap();
let port = self.info.config.listen_address.port();
self.info.listen_port = port;
self.add_node("enode://a9a921de2ff09a9a4d38b623c67b2d6b477a8e654ae95d874750cbbcb31b33296496a7b4421934e2629269e180823e52c15c2b19fc59592ec51ffe4f2de76ed7@127.0.0.1:30303");
/* // GO bootnodes
self.add_node("enode://a979fb575495b8d6db44f750317d0f4622bf4c2aa3365d6af7c284339968eef29b69ad0dce72a4d8db5ebb4968de0e3bec910127f134779fbcb0cb6d3331163c@52.16.188.185:30303"); // IE
self.add_node("enode://de471bccee3d042261d52e9bff31458daecc406142b401d4cd848f677479f73104b9fdeb090af9583d3391b7f10cb2ba9e26865dd5fca4fcdc0fb1e3b723c786@54.94.239.50:30303"); // BR
self.add_node("enode://1118980bf48b0a3640bdba04e0fe78b1add18e1cd99bf22d53daac1fd9972ad650df52176e7c7d89d1114cfef2bc23a2959aa54998a46afcf7d91809f0855082@52.74.57.123:30303"); // SG
// ETH/DEV cpp-ethereum (poc-9.ethdev.com)
self.add_node("enode://979b7fa28feeb35a4741660a16076f1943202cb72b6af70d327f053e248bab9ba81760f39d0701ef1d8f89cc1fbd2cacba0710a12cd5314d5e0c9021aa3637f9@5.1.83.226:30303");*/
fn initialize(&self, io: &IoContext<NetworkIoMessage<Message>>) {
io.register_stream(TCP_ACCEPT).expect("Error registering TCP listener");
io.register_stream(NODETABLE_RECEIVE).expect("Error registering UDP listener");
io.register_timer(IDLE, MAINTENANCE_TIMEOUT).expect("Error registering Network idle timer");
//io.register_timer(NODETABLE_MAINTAIN, 7200);
}
fn stream_hup<'s>(&'s mut self, io: &mut IoContext<'s, NetworkIoMessage<Message>>, stream: StreamToken) {
fn stream_hup(&self, io: &IoContext<NetworkIoMessage<Message>>, stream: StreamToken) {
trace!(target: "net", "Hup: {}", stream);
match stream {
FIRST_CONNECTION ... LAST_CONNECTION => self.connection_closed(stream, io),
@ -577,7 +577,7 @@ impl<Message> IoHandler<NetworkIoMessage<Message>> for Host<Message> where Messa
};
}
fn stream_readable<'s>(&'s mut self, io: &mut IoContext<'s, NetworkIoMessage<Message>>, stream: StreamToken) {
fn stream_readable(&self, io: &IoContext<NetworkIoMessage<Message>>, stream: StreamToken) {
match stream {
FIRST_CONNECTION ... LAST_CONNECTION => self.connection_readable(stream, io),
NODETABLE_RECEIVE => {},
@ -586,66 +586,97 @@ impl<Message> IoHandler<NetworkIoMessage<Message>> for Host<Message> where Messa
}
}
fn stream_writable<'s>(&'s mut self, io: &mut IoContext<'s, NetworkIoMessage<Message>>, stream: StreamToken) {
fn stream_writable(&self, io: &IoContext<NetworkIoMessage<Message>>, stream: StreamToken) {
match stream {
FIRST_CONNECTION ... LAST_CONNECTION => self.connection_writable(stream, io),
NODETABLE_RECEIVE => {},
_ => panic!("Received unknown writable token"),
}
}
fn timeout<'s>(&'s mut self, io: &mut IoContext<'s, NetworkIoMessage<Message>>, token: TimerToken) {
fn timeout(&self, io: &IoContext<NetworkIoMessage<Message>>, token: TimerToken) {
match token {
IDLE => self.maintain_network(io),
FIRST_CONNECTION ... LAST_CONNECTION => self.connection_timeout(token, io),
NODETABLE_DISCOVERY => {},
NODETABLE_MAINTAIN => {},
_ => {
if let Some(protocol) = self.timers.get_mut(&token).map(|p| *p) {
match self.handlers.get_mut(protocol) {
None => { warn!(target: "net", "No handler found for protocol: {:?}", protocol) },
Some(h) => { h.timeout(&mut NetworkContext::new(io, protocol, Some(token), &mut self.connections, &mut self.timers), token); }
};
} // else time not registerd through us
_ => match self.timers.read().unwrap().get(&token).cloned() {
Some(timer) => match self.handlers.read().unwrap().get(timer.protocol).cloned() {
None => { warn!(target: "net", "No handler found for protocol: {:?}", timer.protocol) },
Some(h) => { h.timeout(&NetworkContext::new(io, timer.protocol, None, self.connections.clone()), timer.token); }
},
None => { warn!("Unknown timer token: {}", token); } // timer is not registerd through us
}
}
}
fn message<'s>(&'s mut self, io: &mut IoContext<'s, NetworkIoMessage<Message>>, message: &'s mut NetworkIoMessage<Message>) {
fn message(&self, io: &IoContext<NetworkIoMessage<Message>>, message: &NetworkIoMessage<Message>) {
match *message {
NetworkIoMessage::AddHandler {
ref mut handler,
ref handler,
ref protocol,
ref versions
} => {
let mut h = mem::replace(handler, None).unwrap();
h.initialize(&mut NetworkContext::new(io, protocol, None, &mut self.connections, &mut self.timers));
self.handlers.insert(protocol, h);
let h = handler.clone();
h.initialize(&NetworkContext::new(io, protocol, None, self.connections.clone()));
self.handlers.write().unwrap().insert(protocol, h);
let mut info = self.info.write().unwrap();
for v in versions {
self.info.capabilities.push(CapabilityInfo { protocol: protocol, version: *v, packet_count:0 });
info.capabilities.push(CapabilityInfo { protocol: protocol, version: *v, packet_count:0 });
}
},
NetworkIoMessage::Send {
ref peer,
ref packet_id,
NetworkIoMessage::AddTimer {
ref protocol,
ref data,
ref delay,
ref token,
} => {
match self.connections.get_mut(*peer as usize) {
Some(&mut ConnectionEntry::Session(ref mut s)) => {
s.send_packet(protocol, *packet_id as u8, &data).unwrap_or_else(|e| {
warn!(target: "net", "Send error: {:?}", e);
}); //TODO: don't copy vector data
},
_ => {
warn!(target: "net", "Send: Peer does not exist");
}
}
let handler_token = {
let mut timer_counter = self.timer_counter.write().unwrap();
let counter = timer_counter.deref_mut();
let handler_token = *counter;
*counter += 1;
handler_token
};
self.timers.write().unwrap().insert(handler_token, ProtocolTimer { protocol: protocol, token: *token });
io.register_timer(handler_token, *delay).expect("Error registering timer");
},
NetworkIoMessage::User(ref message) => {
for (p, h) in &mut self.handlers {
h.message(&mut NetworkContext::new(io, p, None, &mut self.connections, &mut self.timers), &message);
for (p, h) in self.handlers.read().unwrap().iter() {
h.message(&NetworkContext::new(io, p, None, self.connections.clone()), &message);
}
}
}
}
fn register_stream(&self, stream: StreamToken, reg: Token, event_loop: &mut EventLoop<IoManager<NetworkIoMessage<Message>>>) {
match stream {
FIRST_CONNECTION ... LAST_CONNECTION => {
if let Some(connection) = self.connections.read().unwrap().get(stream).cloned() {
match *connection.lock().unwrap().deref() {
ConnectionEntry::Handshake(ref h) => h.register_socket(reg, event_loop).expect("Error registering socket"),
ConnectionEntry::Session(_) => warn!("Unexpected session stream registration")
}
} else {} // expired
}
NODETABLE_RECEIVE => event_loop.register(self.udp_socket.lock().unwrap().deref(), Token(NODETABLE_RECEIVE), EventSet::all(), PollOpt::edge()).expect("Error registering stream"),
TCP_ACCEPT => event_loop.register(self.tcp_listener.lock().unwrap().deref(), Token(TCP_ACCEPT), EventSet::all(), PollOpt::edge()).expect("Error registering stream"),
_ => warn!("Unexpected stream registration")
}
}
fn update_stream(&self, stream: StreamToken, reg: Token, event_loop: &mut EventLoop<IoManager<NetworkIoMessage<Message>>>) {
match stream {
FIRST_CONNECTION ... LAST_CONNECTION => {
if let Some(connection) = self.connections.read().unwrap().get(stream).cloned() {
match *connection.lock().unwrap().deref() {
ConnectionEntry::Handshake(ref h) => h.update_socket(reg, event_loop).expect("Error updating socket"),
ConnectionEntry::Session(ref s) => s.update_socket(reg, event_loop).expect("Error updating socket"),
}
} else {} // expired
}
NODETABLE_RECEIVE => event_loop.reregister(self.udp_socket.lock().unwrap().deref(), Token(NODETABLE_RECEIVE), EventSet::all(), PollOpt::edge()).expect("Error reregistering stream"),
TCP_ACCEPT => event_loop.reregister(self.tcp_listener.lock().unwrap().deref(), Token(TCP_ACCEPT), EventSet::all(), PollOpt::edge()).expect("Error reregistering stream"),
_ => warn!("Unexpected stream update")
}
}
}

87
util/src/network/mod.rs
View File

@ -8,39 +8,40 @@
///
/// struct MyHandler;
///
/// #[derive(Clone)]
/// struct MyMessage {
/// data: u32
/// }
///
/// impl NetworkProtocolHandler<MyMessage> for MyHandler {
/// fn initialize(&mut self, io: &mut NetworkContext<MyMessage>) {
/// io.register_timer(1000);
/// fn initialize(&self, io: &NetworkContext<MyMessage>) {
/// io.register_timer(0, 1000);
/// }
///
/// fn read(&mut self, io: &mut NetworkContext<MyMessage>, peer: &PeerId, packet_id: u8, data: &[u8]) {
/// fn read(&self, io: &NetworkContext<MyMessage>, peer: &PeerId, packet_id: u8, data: &[u8]) {
/// println!("Received {} ({} bytes) from {}", packet_id, data.len(), peer);
/// }
///
/// fn connected(&mut self, io: &mut NetworkContext<MyMessage>, peer: &PeerId) {
/// fn connected(&self, io: &NetworkContext<MyMessage>, peer: &PeerId) {
/// println!("Connected {}", peer);
/// }
///
/// fn disconnected(&mut self, io: &mut NetworkContext<MyMessage>, peer: &PeerId) {
/// fn disconnected(&self, io: &NetworkContext<MyMessage>, peer: &PeerId) {
/// println!("Disconnected {}", peer);
/// }
///
/// fn timeout(&mut self, io: &mut NetworkContext<MyMessage>, timer: TimerToken) {
/// fn timeout(&self, io: &NetworkContext<MyMessage>, timer: TimerToken) {
/// println!("Timeout {}", timer);
/// }
///
/// fn message(&mut self, io: &mut NetworkContext<MyMessage>, message: &MyMessage) {
/// fn message(&self, io: &NetworkContext<MyMessage>, message: &MyMessage) {
/// println!("Message {}", message.data);
/// }
/// }
///
/// fn main () {
/// let mut service = NetworkService::<MyMessage>::start().expect("Error creating network service");
/// service.register_protocol(Box::new(MyHandler), "myproto", &[1u8]);
/// service.register_protocol(Arc::new(MyHandler), "myproto", &[1u8]);
///
/// // Wait for quit condition
/// // ...
@ -57,36 +58,78 @@ mod error;
mod node;
/// TODO [arkpar] Please document me
pub type PeerId = host::PeerId;
pub use network::host::PeerId;
/// TODO [arkpar] Please document me
pub type PacketId = host::PacketId;
pub use network::host::PacketId;
/// TODO [arkpar] Please document me
pub type NetworkContext<'s,'io, Message> = host::NetworkContext<'s, 'io, Message>;
pub use network::host::NetworkContext;
/// TODO [arkpar] Please document me
pub type NetworkService<Message> = service::NetworkService<Message>;
pub use network::service::NetworkService;
/// TODO [arkpar] Please document me
pub use network::host::NetworkIoMessage;
/// TODO [arkpar] Please document me
pub type NetworkIoMessage<Message> = host::NetworkIoMessage<Message>;
pub use network::host::NetworkIoMessage::User as UserMessage;
/// TODO [arkpar] Please document me
pub type NetworkError = error::NetworkError;
pub use network::error::NetworkError;
use io::*;
use io::TimerToken;
/// Network IO protocol handler. This needs to be implemented for each new subprotocol.
/// All the handler function are called from within IO event loop.
/// `Message` is the type for message data.
pub trait NetworkProtocolHandler<Message>: Send where Message: Send {
pub trait NetworkProtocolHandler<Message>: Sync + Send where Message: Send + Sync + Clone {
/// Initialize the handler
fn initialize(&mut self, _io: &mut NetworkContext<Message>) {}
fn initialize(&self, _io: &NetworkContext<Message>) {}
/// Called when new network packet received.
fn read(&mut self, io: &mut NetworkContext<Message>, peer: &PeerId, packet_id: u8, data: &[u8]);
fn read(&self, io: &NetworkContext<Message>, peer: &PeerId, packet_id: u8, data: &[u8]);
/// Called when new peer is connected. Only called when peer supports the same protocol.
fn connected(&mut self, io: &mut NetworkContext<Message>, peer: &PeerId);
fn connected(&self, io: &NetworkContext<Message>, peer: &PeerId);
/// Called when a previously connected peer disconnects.
fn disconnected(&mut self, io: &mut NetworkContext<Message>, peer: &PeerId);
fn disconnected(&self, io: &NetworkContext<Message>, peer: &PeerId);
/// Timer function called after a timeout created with `NetworkContext::timeout`.
fn timeout(&mut self, _io: &mut NetworkContext<Message>, _timer: TimerToken) {}
fn timeout(&self, _io: &NetworkContext<Message>, _timer: TimerToken) {}
/// Called when a broadcasted message is received. The message can only be sent from a different IO handler.
fn message(&mut self, _io: &mut NetworkContext<Message>, _message: &Message) {}
fn message(&self, _io: &NetworkContext<Message>, _message: &Message) {}
}
#[test]
fn test_net_service() {
use std::sync::Arc;
struct MyHandler;
#[derive(Clone)]
struct MyMessage {
data: u32
}
impl NetworkProtocolHandler<MyMessage> for MyHandler {
fn initialize(&self, io: &NetworkContext<MyMessage>) {
io.register_timer(0, 1000).unwrap();
}
fn read(&self, _io: &NetworkContext<MyMessage>, peer: &PeerId, packet_id: u8, data: &[u8]) {
println!("Received {} ({} bytes) from {}", packet_id, data.len(), peer);
}
fn connected(&self, _io: &NetworkContext<MyMessage>, peer: &PeerId) {
println!("Connected {}", peer);
}
fn disconnected(&self, _io: &NetworkContext<MyMessage>, peer: &PeerId) {
println!("Disconnected {}", peer);
}
fn timeout(&self, _io: &NetworkContext<MyMessage>, timer: TimerToken) {
println!("Timeout {}", timer);
}
fn message(&self, _io: &NetworkContext<MyMessage>, message: &MyMessage) {
println!("Message {}", message.data);
}
}
let mut service = NetworkService::<MyMessage>::start().expect("Error creating network service");
service.register_protocol(Arc::new(MyHandler), "myproto", &[1u8]).unwrap();
}

30
util/src/network/service.rs
View File

@ -1,23 +1,24 @@
use std::sync::*;
use error::*;
use network::{NetworkProtocolHandler};
use network::error::{NetworkError};
use network::host::{Host, NetworkIoMessage, PeerId, PacketId, ProtocolId};
use network::host::{Host, NetworkIoMessage, ProtocolId};
use io::*;
/// IO Service with networking
/// `Message` defines a notification data type.
pub struct NetworkService<Message> where Message: Send + 'static {
pub struct NetworkService<Message> where Message: Send + Sync + Clone + 'static {
io_service: IoService<NetworkIoMessage<Message>>,
host_info: String,
}
impl<Message> NetworkService<Message> where Message: Send + 'static {
impl<Message> NetworkService<Message> where Message: Send + Sync + Clone + 'static {
/// Starts IO event loop
pub fn start() -> Result<NetworkService<Message>, UtilError> {
let mut io_service = try!(IoService::<NetworkIoMessage<Message>>::start());
let host = Box::new(Host::new());
let host_info = host.info.client_version.clone();
info!("NetworkService::start(): id={:?}", host.info.id());
let host = Arc::new(Host::new());
let host_info = host.client_version();
info!("NetworkService::start(): id={:?}", host.client_id());
try!(io_service.register_handler(host));
Ok(NetworkService {
io_service: io_service,
@ -25,21 +26,10 @@ impl<Message> NetworkService<Message> where Message: Send + 'static {
})
}
/// Send a message over the network. Normaly `HostIo::send` should be used. This can be used from non-io threads.
pub fn send(&mut self, peer: &PeerId, packet_id: PacketId, protocol: ProtocolId, data: &[u8]) -> Result<(), NetworkError> {
try!(self.io_service.send_message(NetworkIoMessage::Send {
peer: *peer,
packet_id: packet_id,
protocol: protocol,
data: data.to_vec()
}));
Ok(())
}
/// Regiter a new protocol handler with the event loop.
pub fn register_protocol(&mut self, handler: Box<NetworkProtocolHandler<Message>+Send>, protocol: ProtocolId, versions: &[u8]) -> Result<(), NetworkError> {
pub fn register_protocol(&mut self, handler: Arc<NetworkProtocolHandler<Message>+Send + Sync>, protocol: ProtocolId, versions: &[u8]) -> Result<(), NetworkError> {
try!(self.io_service.send_message(NetworkIoMessage::AddHandler {
handler: Some(handler),
handler: handler,
protocol: protocol,
versions: versions.to_vec(),
}));
@ -55,7 +45,5 @@ impl<Message> NetworkService<Message> where Message: Send + 'static {
pub fn io(&mut self) -> &mut IoService<NetworkIoMessage<Message>> {
&mut self.io_service
}
}

16
util/src/network/session.rs
View File

@ -4,6 +4,7 @@ use rlp::*;
use network::connection::{EncryptedConnection, Packet};
use network::handshake::Handshake;
use error::*;
use io::{IoContext};
use network::error::{NetworkError, DisconnectReason};
use network::host::*;
use network::node::NodeId;
@ -84,7 +85,7 @@ const PACKET_LAST: u8 = 0x7f;
impl Session {
/// Create a new session out of comepleted handshake. Consumes handshake object.
pub fn new<Host:Handler<Timeout=Token>>(h: Handshake, event_loop: &mut EventLoop<Host>, host: &HostInfo) -> Result<Session, UtilError> {
pub fn new<Message>(h: Handshake, _io: &IoContext<Message>, host: &HostInfo) -> Result<Session, UtilError> where Message: Send + Sync + Clone {
let id = h.id.clone();
let connection = try!(EncryptedConnection::new(h));
let mut session = Session {
@ -99,7 +100,6 @@ impl Session {
};
try!(session.write_hello(host));
try!(session.write_ping());
try!(session.connection.register(event_loop));
Ok(session)
}
@ -109,16 +109,16 @@ impl Session {
}
/// Readable IO handler. Returns packet data if available.
pub fn readable<Host:Handler>(&mut self, event_loop: &mut EventLoop<Host>, host: &HostInfo) -> Result<SessionData, UtilError> {
match try!(self.connection.readable(event_loop)) {
pub fn readable<Message>(&mut self, io: &IoContext<Message>, host: &HostInfo) -> Result<SessionData, UtilError> where Message: Send + Sync + Clone {
match try!(self.connection.readable(io)) {
Some(data) => Ok(try!(self.read_packet(data, host))),
None => Ok(SessionData::None)
}
}
/// Writable IO handler. Sends pending packets.
pub fn writable<Host:Handler>(&mut self, event_loop: &mut EventLoop<Host>, _host: &HostInfo) -> Result<(), UtilError> {
self.connection.writable(event_loop)
pub fn writable<Message>(&mut self, io: &IoContext<Message>, _host: &HostInfo) -> Result<(), UtilError> where Message: Send + Sync + Clone {
self.connection.writable(io)
}
/// Checks if peer supports given capability
@ -127,8 +127,8 @@ impl Session {
}
/// Update registration with the event loop. Should be called at the end of the IO handler.
pub fn reregister<Host:Handler>(&mut self, event_loop: &mut EventLoop<Host>) -> Result<(), UtilError> {
self.connection.reregister(event_loop)
pub fn update_socket<Host:Handler>(&self, reg:Token, event_loop: &mut EventLoop<Host>) -> Result<(), UtilError> {
self.connection.update_socket(reg, event_loop)
}
/// Send a protocol packet to peer.