93 lines
2.9 KiB
Rust
93 lines
2.9 KiB
Rust
// Copyright 2015, 2016 Ethcore (UK) Ltd.
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// This file is part of Parity.
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// Parity is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// Parity is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with Parity. If not, see <http://www.gnu.org/licenses/>.
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use network::{NetworkContext, PeerId, PacketId, NetworkError};
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use ethcore::client::BlockChainClient;
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/// IO interface for the syning handler.
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/// Provides peer connection management and an interface to the blockchain client.
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// TODO: ratings
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pub trait SyncIo {
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/// Disable a peer
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fn disable_peer(&mut self, peer_id: PeerId);
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/// Disconnect peer
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fn disconnect_peer(&mut self, peer_id: PeerId);
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/// Respond to current request with a packet. Can be called from an IO handler for incoming packet.
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fn respond(&mut self, packet_id: PacketId, data: Vec<u8>) -> Result<(), NetworkError>;
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/// Send a packet to a peer.
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fn send(&mut self, peer_id: PeerId, packet_id: PacketId, data: Vec<u8>) -> Result<(), NetworkError>;
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/// Get the blockchain
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fn chain(&self) -> &BlockChainClient;
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/// Returns peer client identifier string
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fn peer_info(&self, peer_id: PeerId) -> String {
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peer_id.to_string()
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}
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/// Returns if the chain block queue empty
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fn is_chain_queue_empty(&self) -> bool {
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self.chain().queue_info().is_empty()
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}
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/// Check if the session is expired
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fn is_expired(&self) -> bool;
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}
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/// Wraps `NetworkContext` and the blockchain client
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pub struct NetSyncIo<'s, 'h> where 'h: 's {
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network: &'s NetworkContext<'h>,
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chain: &'s BlockChainClient
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}
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impl<'s, 'h> NetSyncIo<'s, 'h> {
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/// Creates a new instance from the `NetworkContext` and the blockchain client reference.
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pub fn new(network: &'s NetworkContext<'h>, chain: &'s BlockChainClient) -> NetSyncIo<'s, 'h> {
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NetSyncIo {
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network: network,
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chain: chain,
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}
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}
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}
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impl<'s, 'h> SyncIo for NetSyncIo<'s, 'h> {
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fn disable_peer(&mut self, peer_id: PeerId) {
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self.network.disable_peer(peer_id);
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}
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fn disconnect_peer(&mut self, peer_id: PeerId) {
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self.network.disconnect_peer(peer_id);
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}
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fn respond(&mut self, packet_id: PacketId, data: Vec<u8>) -> Result<(), NetworkError>{
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self.network.respond(packet_id, data)
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}
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fn send(&mut self, peer_id: PeerId, packet_id: PacketId, data: Vec<u8>) -> Result<(), NetworkError>{
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self.network.send(peer_id, packet_id, data)
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}
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fn chain(&self) -> &BlockChainClient {
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self.chain
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}
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fn peer_info(&self, peer_id: PeerId) -> String {
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self.network.peer_info(peer_id)
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}
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fn is_expired(&self) -> bool {
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self.network.is_expired()
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}
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}
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