Implement the basic structure of the beacon node.

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(|_| ()));
+}