97 lines
2.3 KiB
Rust
97 lines
2.3 KiB
Rust
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use std::io::{Read, Write};
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use std::sync::Arc;
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use std::net::SocketAddr;
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use std::path::PathBuf;
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use futures::channel::oneshot;
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use serde::Deserialize;
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use rand::Rng;
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use crate::data::UUID;
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use crate::error::Error;
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use crate::membership::System;
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use crate::api_server;
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use crate::rpc_server;
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#[derive(Deserialize, Debug)]
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pub struct Config {
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pub metadata_dir: PathBuf,
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pub data_dir: PathBuf,
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pub api_port: u16,
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pub rpc_port: u16,
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pub bootstrap_peers: Vec<SocketAddr>,
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}
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fn read_config(config_file: PathBuf) -> Result<Config, Error> {
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let mut file = std::fs::OpenOptions::new()
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.read(true)
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.open(config_file.as_path())?;
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let mut config = String::new();
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file.read_to_string(&mut config)?;
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Ok(toml::from_str(&config)?)
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}
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fn gen_node_id(metadata_dir: &PathBuf) -> Result<UUID, Error> {
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let mut id_file = metadata_dir.clone();
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id_file.push("node_id");
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if id_file.as_path().exists() {
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let mut f = std::fs::File::open(id_file.as_path())?;
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let mut d = vec![];
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f.read_to_end(&mut d)?;
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if d.len() != 32 {
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return Err(Error::Message(format!("Corrupt node_id file")))
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}
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let mut id = [0u8; 32];
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id.copy_from_slice(&d[..]);
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Ok(id)
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} else {
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let id = rand::thread_rng().gen::<UUID>();
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let mut f = std::fs::File::create(id_file.as_path())?;
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f.write_all(&id[..])?;
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Ok(id)
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}
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}
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async fn shutdown_signal(chans: Vec<oneshot::Sender<()>>) {
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// Wait for the CTRL+C signal
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tokio::signal::ctrl_c()
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.await
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.expect("failed to install CTRL+C signal handler");
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println!("Received CTRL+C, shutting down.");
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for ch in chans {
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ch.send(()).unwrap();
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}
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}
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async fn wait_from(chan: oneshot::Receiver<()>) -> () {
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chan.await.unwrap()
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}
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pub async fn run_server(config_file: PathBuf) -> Result<(), Error> {
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let config = read_config(config_file)
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.expect("Unable to read config file");
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let id = gen_node_id(&config.metadata_dir)
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.expect("Unable to read or generate node ID");
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println!("Node ID: {}", hex::encode(id));
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let sys = Arc::new(System::new(config, id));
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let (tx1, rx1) = oneshot::channel();
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let (tx2, rx2) = oneshot::channel();
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let rpc_server = rpc_server::run_rpc_server(sys.clone(), wait_from(rx1));
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let api_server = api_server::run_api_server(sys.clone(), wait_from(rx2));
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tokio::spawn(shutdown_signal(vec![tx1, tx2]));
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tokio::spawn(sys.bootstrap());
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futures::try_join!(rpc_server, api_server)?;
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Ok(())
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}
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