openethereum/src/service.rs

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use util::*;
use sync::*;
use spec::Spec;
use error::*;
use std::env;
use client::Client;
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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 {
_net_service: NetworkService<SyncMessage>,
}
impl ClientService {
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/// Start the service in a separate thread.
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pub fn start(spec: Spec) -> Result<ClientService, Error> {
let mut net_service = try!(NetworkService::start());
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info!("Starting {}", net_service.host_info());
info!("Configured for {} using {} engine", spec.name, spec.engine_name);
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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()))));
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EthSync::register(&mut net_service, client.clone());
let client_io = Box::new(ClientIoHandler {
client: client
});
try!(net_service.io().register_handler(client_io));
Ok(ClientService {
_net_service: net_service,
})
}
}
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/// IO interface for the Client handler
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struct ClientIoHandler {
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client: Arc<RwLock<Client>>
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}
impl IoHandler<NetSyncMessage> for ClientIoHandler {
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fn initialize<'s>(&'s mut self, _io: &mut IoContext<'s, NetSyncMessage>) { }
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fn message<'s>(&'s mut self, _io: &mut IoContext<'s, NetSyncMessage>, net_message: &'s mut NetSyncMessage) {
match net_message {
&mut UserMessage(ref mut message) => {
match message {
&mut SyncMessage::BlockVerified(ref mut bytes) => {
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self.client.write().unwrap().import_verified_block(mem::replace(bytes, Bytes::new()));
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},
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_ => {}, // ignore other messages
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}
}
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_ => {}, // ignore other messages
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}
}
}