openethereum/sync/io.rs
2016-01-29 15:56:06 +01:00

63 lines
1.8 KiB
Rust

use client::BlockChainClient;
use util::{NetworkContext, PeerId, PacketId,};
use util::error::UtilError;
use service::SyncMessage;
/// IO interface for the syning handler.
/// Provides peer connection management and an interface to the blockchain client.
// TODO: ratings
pub trait SyncIo {
/// Disable a peer
fn disable_peer(&mut self, peer_id: PeerId);
/// Respond to current request with a packet. Can be called from an IO handler for incoming packet.
fn respond(&mut self, packet_id: PacketId, data: Vec<u8>) -> Result<(), UtilError>;
/// 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(&self) -> &BlockChainClient;
/// Returns peer client identifier string
fn peer_info(&self, peer_id: PeerId) -> String {
peer_id.to_string()
}
}
/// Wraps `NetworkContext` and the blockchain client
pub struct NetSyncIo<'s, 'h> where 'h: 's {
network: &'s NetworkContext<'h, SyncMessage>,
chain: &'s BlockChainClient
}
impl<'s, 'h> NetSyncIo<'s, 'h> {
/// Creates a new instance from the `NetworkContext` and the blockchain client reference.
pub fn new(network: &'s NetworkContext<'h, SyncMessage>, chain: &'s BlockChainClient) -> NetSyncIo<'s, 'h> {
NetSyncIo {
network: network,
chain: chain,
}
}
}
impl<'s, 'h> SyncIo for NetSyncIo<'s, 'h> {
fn disable_peer(&mut self, peer_id: PeerId) {
self.network.disable_peer(peer_id);
}
fn respond(&mut self, packet_id: PacketId, data: Vec<u8>) -> Result<(), UtilError>{
self.network.respond(packet_id, data)
}
fn send(&mut self, peer_id: PeerId, packet_id: PacketId, data: Vec<u8>) -> Result<(), UtilError>{
self.network.send(peer_id, packet_id, data)
}
fn chain(&self) -> &BlockChainClient {
self.chain
}
fn peer_info(&self, peer_id: PeerId) -> String {
self.network.peer_info(peer_id)
}
}