151 lines
4.0 KiB
Rust
151 lines
4.0 KiB
Rust
use std::{io, net};
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use crossbeam_channel as chan;
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use nakamoto_net::{LocalTime, Reactor};
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use thiserror::Error;
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use crate::clock::RefClock;
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use crate::profile::Profile;
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use crate::service::routing;
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use crate::transport::Transport;
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use crate::wire::Wire;
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use crate::{address, service};
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pub mod handle;
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/// Directory in `$RAD_HOME` under which node-specific files are stored.
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pub const NODE_DIR: &str = "node";
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/// Filename of routing table database under [`NODE_DIR`].
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pub const ROUTING_DB_FILE: &str = "routing.db";
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/// Filename of address database under [`NODE_DIR`].
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pub const ADDRESS_DB_FILE: &str = "addresses.db";
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/// A client error.
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#[derive(Error, Debug)]
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pub enum Error {
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/// A routing database error.
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#[error("routing database error: {0}")]
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Routing(#[from] routing::Error),
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/// An address database error.
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#[error("address database error: {0}")]
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Addresses(#[from] address::Error),
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/// An I/O error.
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#[error("i/o error: {0}")]
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Io(#[from] io::Error),
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/// A networking error.
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#[error("network error: {0}")]
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Net(#[from] nakamoto_net::error::Error),
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}
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/// Client configuration.
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#[derive(Debug, Clone)]
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pub struct Config {
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/// Client service configuration.
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pub service: service::Config,
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/// Client listen addresses.
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pub listen: Vec<net::SocketAddr>,
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}
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impl Config {
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/// Create a new configuration for the given network.
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pub fn new(network: service::Network) -> Self {
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Self {
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service: service::Config {
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network,
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..service::Config::default()
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},
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..Self::default()
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}
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}
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}
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impl Default for Config {
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fn default() -> Self {
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Self {
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service: service::Config::default(),
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listen: vec![([0, 0, 0, 0], 0).into()],
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}
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}
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}
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pub struct Client<R: Reactor> {
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reactor: R,
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profile: Profile,
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handle: chan::Sender<service::Command>,
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commands: chan::Receiver<service::Command>,
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shutdown: chan::Sender<()>,
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listening: chan::Receiver<net::SocketAddr>,
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events: Events,
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}
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impl<R: Reactor> Client<R> {
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pub fn new(profile: Profile) -> Result<Self, Error> {
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let (handle, commands) = chan::unbounded::<service::Command>();
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let (shutdown, shutdown_recv) = chan::bounded(1);
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let (listening_send, listening) = chan::bounded(1);
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let reactor = R::new(shutdown_recv, listening_send)?;
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let events = Events {};
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Ok(Self {
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profile,
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reactor,
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handle,
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commands,
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listening,
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shutdown,
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events,
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})
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}
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pub fn run(mut self, config: Config) -> Result<(), Error> {
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let network = config.service.network;
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let rng = fastrand::Rng::new();
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let time = LocalTime::now();
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let storage = self.profile.storage;
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let signer = self.profile.signer;
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let addresses =
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address::Book::open(self.profile.home.join(NODE_DIR).join(ADDRESS_DB_FILE))?;
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let routing = routing::Table::open(self.profile.home.join(NODE_DIR).join(ROUTING_DB_FILE))?;
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log::info!("Initializing client ({:?})..", network);
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let service = service::Service::new(
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config.service,
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RefClock::from(time),
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routing,
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storage,
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addresses,
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signer,
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rng,
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);
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self.reactor.run(
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&config.listen,
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Transport::new(Wire::new(service)),
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self.events,
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self.commands,
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)?;
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Ok(())
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}
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/// Create a new handle to communicate with the client.
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pub fn handle(&self) -> handle::Handle<R::Waker> {
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handle::Handle {
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waker: self.reactor.waker(),
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commands: self.handle.clone(),
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shutdown: self.shutdown.clone(),
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listening: self.listening.clone(),
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}
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}
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}
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pub struct Events {}
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impl nakamoto_net::Publisher<service::Event> for Events {
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fn publish(&mut self, e: service::Event) {
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log::info!("Received event {:?}", e);
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}
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}
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