Implement the basic structure of the beacon node.

Cargo.toml

@@ -18,7 +18,9 @@ members = [
     "eth2/utils/test_random_derive",
 	"beacon_node",
 	"beacon_node/db",
+	"beacon_node/client",
 	"beacon_node/network",
+    "beacon_node/rpc",
 	"beacon_node/sync",
 	"beacon_node/version",
 	"beacon_node/beacon_chain",

beacon_node/Cargo.toml

@@ -5,25 +5,14 @@ authors = ["Paul Hauner <paul@paulhauner.com>", "Age Manning <Age@AgeManning.com
 edition = "2018"
 
 [dependencies]
-bls = { path = "../eth2/utils/bls" }
-beacon_chain = { path = "beacon_chain" }
-grpcio = { version = "0.4", default-features = false, features = ["protobuf-codec"] }
-protobuf = "2.0.2"
-protos = { path = "../protos" }
-clap = "2.32.0"
-db = { path = "db" }
-network = { path = "network" }
-sync = { path = "sync" }
+client = { path = "client" }
 version = { path = "version" }
-dirs = "1.0.3"
-futures = "0.1.23"
-fork_choice = { path = "../eth2/fork_choice" }
+
+clap = "2.32.0"
 slog = "^2.2.3"
-slot_clock = { path = "../eth2/utils/slot_clock" }
 slog-term = "^2.4.0"
 slog-async = "^2.3.0"
-types = { path = "../eth2/types" }
-ssz = { path = "../eth2/utils/ssz" }
-tokio = "0.1.15"
-error-chain = "0.12.0"
 ctrlc = { version = "3.1.1", features = ["termination"] }
+tokio = "0.1.15"
+futures = "0.1.25"
+exit-future = "0.1.3"

beacon_node/client/Cargo.toml

@@ -0,0 +1,22 @@
+[package]
+name = "client"
+version = "0.1.0"
+authors = ["Age Manning <Age@AgeManning.com>"]
+edition = "2018"
+
+[dependencies]
+beacon_chain = { path = "../beacon_chain" }
+network = { path = "../network" }
+sync = { path = "../sync" }
+db = { path = "../db" }
+fork_choice = { path = "../../eth2/fork_choice" }
+types = { path = "../../eth2/types" }
+slot_clock = { path = "../../eth2/utils/slot_clock" }
+
+error-chain = "0.12.0"
+slog = "^2.2.3"
+tokio = "0.1.15"
+clap = "2.32.0"
+dirs = "1.0.3"
+exit-future = "0.1.3"
+futures = "0.1.25"

beacon_node/client/src/client_config.rs

@@ -8,11 +8,9 @@ use std::net::IpAddr;
 use std::path::PathBuf;
 use types::ChainSpec;
 
-/// Stores the core configuration for this Lighthouse instance.
-/// This struct is general, other components may implement more
-/// specialized configuration structs.
+/// Stores the client configuration for this Lighthouse instance.
 #[derive(Debug, Clone)]
-pub struct Config {
+pub struct ClientConfig {
     pub data_dir: PathBuf,
     pub spec: ChainSpec,
     pub net_conf: network::NetworkConfiguration,
@@ -23,7 +21,7 @@ pub struct Config {
     //pub ipc_conf:
 }
 
-impl Default for Config {
+impl Default for ClientConfig {
     /// Build a new lighthouse configuration from defaults.
     fn default() -> Self {
         let data_dir = {
@@ -47,10 +45,10 @@ impl Default for Config {
     }
 }
 
-impl Config {
+impl ClientConfig {
     /// Parses the CLI arguments into a `Config` struct.
     pub fn parse_args(args: ArgMatches, log: &slog::Logger) -> Result<Self, &'static str> {
-        let mut config = Config::default();
+        let mut config = ClientConfig::default();
 
         // Network related args
 

beacon_node/client/src/client_types.rs

@@ -0,0 +1,25 @@
+use db::{ClientDB, DiskDB, MemoryDB};
+use fork_choice::{BitwiseLMDGhost, ForkChoice};
+use slot_clock::{SlotClock, SystemTimeSlotClock, TestingSlotClock};
+
+pub trait ClientTypes {
+    type ForkChoice: ForkChoice;
+    type DB: ClientDB;
+    type SlotClock: SlotClock;
+}
+
+pub struct StandardClientType {}
+
+impl ClientTypes for StandardClientType {
+    type DB = DiskDB;
+    type ForkChoice = BitwiseLMDGhost<DiskDB>;
+    type SlotClock = SystemTimeSlotClock;
+}
+
+pub struct TestingClientType {}
+
+impl ClientTypes for TestingClientType {
+    type DB = MemoryDB;
+    type SlotClock = TestingSlotClock;
+    type ForkChoice = BitwiseLMDGhost<MemoryDB>;
+}

beacon_node/client/src/lib.rs

@@ -0,0 +1,50 @@
+extern crate slog;
+
+mod client_config;
+
+pub mod client_types;
+pub mod error;
+pub mod notifier;
+
+pub use client_config::ClientConfig;
+pub use client_types::ClientTypes;
+
+//use beacon_chain::BeaconChain;
+use exit_future::{Exit, Signal};
+use std::marker::PhantomData;
+//use std::sync::Arc;
+use tokio::runtime::TaskExecutor;
+
+//use network::NetworkService;
+
+pub struct Client<T: ClientTypes> {
+    config: ClientConfig,
+    // beacon_chain: Arc<BeaconChain<T, U, F>>,
+    // network: Option<Arc<NetworkService>>,
+    exit: exit_future::Exit,
+    exit_signal: Option<Signal>,
+    log: slog::Logger,
+    phantom: PhantomData<T>,
+}
+
+impl<T: ClientTypes> Client<T> {
+    pub fn new(
+        config: ClientConfig,
+        log: slog::Logger,
+        executor: TaskExecutor,
+    ) -> error::Result<Self> {
+        let (exit_signal, exit) = exit_future::signal();
+
+        Ok(Client {
+            config,
+            exit,
+            exit_signal: Some(exit_signal),
+            log,
+            phantom: PhantomData,
+        })
+    }
+
+    pub fn logger(&self) -> slog::Logger {
+        self.log.clone()
+    }
+}

beacon_node/client/src/notifier.rs

@@ -0,0 +1,35 @@
+use crate::Client;
+use crate::ClientTypes;
+use db::ClientDB;
+use exit_future::Exit;
+use fork_choice::ForkChoice;
+use futures::{Future, Stream};
+use slog::{debug, info};
+use slot_clock::SlotClock;
+use std::sync::Arc;
+use std::time::{Duration, Instant};
+use tokio::runtime::TaskExecutor;
+use tokio::timer::Interval;
+
+/// Thread that monitors the client and reports useful statistics to the user.
+
+pub fn run<T: ClientTypes>(client: &Client<T>, executor: TaskExecutor, exit: Exit) {
+    // notification heartbeat
+    let interval = Interval::new(Instant::now(), Duration::from_secs(5));
+
+    let log = client.logger();
+
+    // build heartbeat logic here
+    let heartbeat = move |_| {
+        info!(log, "Temp heartbeat output");
+        Ok(())
+    };
+
+    // map error and spawn
+    let log = client.logger();
+    let heartbeat_interval = interval
+        .map_err(move |e| debug!(log, "Timer error {}", e))
+        .for_each(heartbeat);
+
+    executor.spawn(exit.until(heartbeat_interval).map(|_| ()));
+}

beacon_node/rpc/Cargo.toml

@@ -0,0 +1,23 @@
+[package]
+name = "rpc"
+version = "0.1.0"
+authors = ["Age Manning <Age@AgeManning.com>"]
+edition = "2018"
+
+[dependencies]
+bls = { path = "../../eth2/utils/bls" }
+beacon_chain = { path = "../beacon_chain" }
+
+protos = { path = "../../protos" }
+grpcio = { version = "0.4", default-features = false, features = ["protobuf-codec"] }
+protobuf = "2.0.2"
+clap = "2.32.0"
+db = { path = "../db" }
+dirs = "1.0.3"
+futures = "0.1.23"
+slog = "^2.2.3"
+slot_clock = { path = "../../eth2/utils/slot_clock" }
+slog-term = "^2.4.0"
+slog-async = "^2.3.0"
+types = { path = "../../eth2/types" }
+ssz = { path = "../../eth2/utils/ssz" }

beacon_node/src/main.rs

@@ -1,12 +1,9 @@
 extern crate slog;
 
-mod config;
-mod error;
-mod rpc;
 mod run;
 
 use clap::{App, Arg};
-use config::Config;
+use client::ClientConfig;
 use slog::{o, Drain};
 
 fn main() {
@@ -43,7 +40,7 @@ fn main() {
         .get_matches();
 
     // invalid arguments, panic
-    let config = Config::parse_args(matches, &logger).unwrap();
+    let config = ClientConfig::parse_args(matches, &logger).unwrap();
 
-    run::run_beacon_node(config, &logger);
+    run::run_beacon_node(config, logger);
 }

beacon_node/src/run.rs

@@ -1,23 +1,13 @@
-use crate::config::Config;
-use crate::error;
-use crate::rpc::start_server;
-use beacon_chain::BeaconChain;
-use bls::create_proof_of_possession;
-use db::{
-    stores::{BeaconBlockStore, BeaconStateStore},
-    ClientDB, DBType, DiskDB, MemoryDB,
-};
-use fork_choice::{BitwiseLMDGhost, ForkChoiceAlgorithm};
+use client::client_types::{StandardClientType, TestingClientType};
+use client::error;
+use client::{notifier, Client, ClientConfig};
 use futures::sync::oneshot;
-use network::NetworkConfiguration;
-use slog::{error, info};
-use slot_clock::SystemTimeSlotClock;
+use futures::Future;
+use slog::info;
 use std::cell::RefCell;
-use std::sync::Arc;
-use tokio::runtime::{Builder, Runtime, TaskExecutor};
-use types::{ChainSpec, Deposit, DepositData, DepositInput, Eth1Data, Hash256, Keypair};
+use tokio::runtime::Builder;
 
-pub fn run_beacon_node(config: Config, log: &slog::Logger) -> error::Result<()> {
+pub fn run_beacon_node(config: ClientConfig, log: slog::Logger) -> error::Result<()> {
     let mut runtime = Builder::new()
         .name_prefix("main-")
         .build()
@@ -33,22 +23,23 @@ pub fn run_beacon_node(config: Config, log: &slog::Logger) -> error::Result<()>
     let ctrlc_send_c = RefCell::new(Some(ctrlc_send));
     ctrlc::set_handler(move || {
         if let Some(ctrlc_send) = ctrlc_send_c.try_borrow_mut().unwrap().take() {
-            ctrlc_send
-                .send(())
-                .expect("Error sending termination message");
+            ctrlc_send.send(()).expect("Error sending ctrl-c message");
         }
     });
 
+    let (exit_signal, exit) = exit_future::signal();
+
     let executor = runtime.executor();
 
-    start(config, log, executor);
+    // currently testing - using TestingNode type
+    let client: Client<TestingClientType> = Client::new(config, log.clone(), executor.clone())?;
+    notifier::run(&client, executor, exit);
 
     runtime.block_on(ctrlc);
 
-    info!(log, "Shutting down.");
-    //TODO: handle shutdown of processes gracefully
-
+    info!(log, "Shutting down..");
+    exit_signal.fire();
+    drop(client);
+    runtime.shutdown_on_idle().wait().unwrap();
     Ok(())
 }
-
-fn start(config: Config, log: &slog::Logger, executor: TaskExecutor) {}