openethereum/sync/src/lib.rs
2016-02-04 04:28:16 +03:00

115 lines
3.3 KiB
Rust

#![warn(missing_docs)]
#![feature(plugin)]
#![plugin(clippy)]
#![feature(augmented_assignments)]
//! Blockchain sync module
//! Implements ethereum protocol version 63 as specified here:
//! https://github.com/ethereum/wiki/wiki/Ethereum-Wire-Protocol
//!
//! Usage example:
//!
//! ```rust
//! extern crate ethcore_util as util;
//! extern crate ethcore;
//! extern crate ethsync;
//! use std::env;
//! use std::sync::Arc;
//! use util::network::{NetworkService, NetworkConfiguration};
//! use ethcore::client::Client;
//! use ethsync::EthSync;
//! use ethcore::ethereum;
//!
//! fn main() {
//! let mut service = NetworkService::start(NetworkConfiguration::new()).unwrap();
//! let dir = env::temp_dir();
//! let client = Client::new(ethereum::new_frontier(), &dir, service.io().channel()).unwrap();
//! EthSync::register(&mut service, client);
//! }
//! ```
#[macro_use]
extern crate log;
#[macro_use]
extern crate ethcore_util as util;
extern crate ethcore;
extern crate env_logger;
extern crate time;
use std::ops::*;
use std::sync::*;
use ethcore::client::Client;
use util::network::{NetworkProtocolHandler, NetworkService, NetworkContext, PeerId};
use util::io::TimerToken;
use chain::ChainSync;
use ethcore::service::SyncMessage;
use io::NetSyncIo;
mod chain;
mod io;
mod range_collection;
#[cfg(test)]
mod tests;
/// Ethereum network protocol handler
pub struct EthSync {
/// Shared blockchain client. TODO: this should evetually become an IPC endpoint
chain: Arc<Client>,
/// Sync strategy
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<Client>) -> Arc<EthSync> {
let sync = Arc::new(EthSync {
chain: chain,
sync: RwLock::new(ChainSync::new()),
});
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.read().unwrap().status()
}
/// Stop sync
pub fn stop(&mut self, io: &mut NetworkContext<SyncMessage>) {
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.write().unwrap().restart(&mut NetSyncIo::new(io, self.chain.deref()));
}
}
impl NetworkProtocolHandler<SyncMessage> for EthSync {
fn initialize(&self, io: &NetworkContext<SyncMessage>) {
io.register_timer(0, 1000).expect("Error registering sync timer");
}
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(&self, io: &NetworkContext<SyncMessage>, peer: &PeerId) {
self.sync.write().unwrap().on_peer_connected(&mut NetSyncIo::new(io, self.chain.deref()), *peer);
}
fn disconnected(&self, io: &NetworkContext<SyncMessage>, peer: &PeerId) {
self.sync.write().unwrap().on_peer_aborting(&mut NetSyncIo::new(io, self.chain.deref()), *peer);
}
fn timeout(&self, io: &NetworkContext<SyncMessage>, _timer: TimerToken) {
self.sync.write().unwrap().maintain_peers(&mut NetSyncIo::new(io, self.chain.deref()));
self.sync.write().unwrap().maintain_sync(&mut NetSyncIo::new(io, self.chain.deref()));
}
}