141 lines
3.9 KiB
Rust
141 lines
3.9 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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//! Creates and registers client and network services.
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use util::*;
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use util::panics::*;
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use spec::Spec;
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use error::*;
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use client::Client;
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/// Message type for external and internal events
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#[derive(Clone)]
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pub enum SyncMessage {
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/// New block has been imported into the blockchain
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NewChainBlock(Bytes), //TODO: use Cow
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/// A block is ready
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BlockVerified,
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}
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/// IO Message type used for Network service
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pub type NetSyncMessage = NetworkIoMessage<SyncMessage>;
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/// Client service setup. Creates and registers client and network services with the IO subsystem.
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pub struct ClientService {
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net_service: NetworkService<SyncMessage>,
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client: Arc<Client>,
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panic_handler: Arc<PanicHandler>
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}
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impl ClientService {
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/// Start the service in a separate thread.
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pub fn start(spec: Spec, net_config: NetworkConfiguration, db_path: &Path) -> Result<ClientService, Error> {
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let panic_handler = PanicHandler::new_in_arc();
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let mut net_service = try!(NetworkService::start(net_config));
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panic_handler.forward_from(&net_service);
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info!("Starting {}", net_service.host_info());
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info!("Configured for {} using {} engine", spec.name, spec.engine_name);
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let client = try!(Client::new(spec, db_path, net_service.io().channel()));
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panic_handler.forward_from(client.deref());
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let client_io = Arc::new(ClientIoHandler {
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client: client.clone()
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});
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try!(net_service.io().register_handler(client_io));
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Ok(ClientService {
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net_service: net_service,
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client: client,
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panic_handler: panic_handler,
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})
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}
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/// Add a node to network
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pub fn add_node(&mut self, _enode: &str) {
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unimplemented!();
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}
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/// Get general IO interface
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pub fn io(&mut self) -> &mut IoService<NetSyncMessage> {
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self.net_service.io()
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}
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/// Get client interface
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pub fn client(&self) -> Arc<Client> {
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self.client.clone()
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}
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/// Get network service component
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pub fn network(&mut self) -> &mut NetworkService<SyncMessage> {
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&mut self.net_service
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}
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}
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impl MayPanic for ClientService {
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fn on_panic<F>(&self, closure: F) where F: OnPanicListener {
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self.panic_handler.on_panic(closure);
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}
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}
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/// IO interface for the Client handler
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struct ClientIoHandler {
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client: Arc<Client>
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}
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const CLIENT_TICK_TIMER: TimerToken = 0;
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const CLIENT_TICK_MS: u64 = 5000;
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impl IoHandler<NetSyncMessage> for ClientIoHandler {
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fn initialize(&self, io: &IoContext<NetSyncMessage>) {
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io.register_timer(CLIENT_TICK_TIMER, CLIENT_TICK_MS).expect("Error registering client timer");
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}
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fn timeout(&self, _io: &IoContext<NetSyncMessage>, timer: TimerToken) {
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if timer == CLIENT_TICK_TIMER {
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self.client.tick();
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}
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}
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#[allow(match_ref_pats)]
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#[allow(single_match)]
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fn message(&self, io: &IoContext<NetSyncMessage>, net_message: &NetSyncMessage) {
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if let &UserMessage(ref message) = net_message {
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match message {
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&SyncMessage::BlockVerified => {
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self.client.import_verified_blocks(&io.channel());
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},
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_ => {}, // ignore other messages
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}
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}
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}
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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use tests::helpers::*;
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use util::network::*;
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#[test]
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fn it_can_be_started() {
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let spec = get_test_spec();
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let temp_path = RandomTempPath::new();
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let service = ClientService::start(spec, NetworkConfiguration::new(), &temp_path.as_path());
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assert!(service.is_ok());
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}
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}
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