Fix multiple daemon example

binaries/cli/src/main.rs

@@ -3,6 +3,7 @@ use std::{net::Ipv4Addr, path::PathBuf};
 use attach::attach_dataflow;
 use clap::Parser;
 use communication_layer_request_reply::{RequestReplyLayer, TcpLayer, TcpRequestReplyConnection};
+use dora_coordinator::Event;
 use dora_core::{
     descriptor::Descriptor,
     topics::{
@@ -255,7 +256,8 @@ fn run() -> eyre::Result<()> {
                 .build()
                 .context("tokio runtime failed")?;
             rt.block_on(async {
-                let (_, task) = dora_coordinator::start(port).await?;
+                let (_, task) =
+                    dora_coordinator::start(port, futures::stream::empty::<Event>()).await?;
                 task.await
             })
             .context("failed to run dora-coordinator")?

binaries/coordinator/src/lib.rs

@@ -40,6 +40,7 @@ mod tcp_utils;
 
 pub async fn start(
     port: Option<u16>,
+    external_events: impl Stream<Item = Event> + Unpin,
 ) -> Result<(u16, impl Future<Output = eyre::Result<()>>), eyre::ErrReport> {
     let port = port.unwrap_or(DORA_COORDINATOR_PORT_DEFAULT);
     let listener = listener::create_listener(port).await?;
@@ -53,7 +54,7 @@ pub async fn start(
     let ctrlc_events = set_up_ctrlc_handler()?;
 
     let future = async move {
-        start_inner(listener, &tasks, ctrlc_events).await?;
+        start_inner(listener, &tasks, (ctrlc_events, external_events).merge()).await?;
 
         tracing::debug!("coordinator main loop finished, waiting on spawned tasks");
         while let Some(join_result) = tasks.next().await {

examples/multiple-daemons/run.rs

@@ -5,7 +5,7 @@ use dora_core::{
 };
 use dora_tracing::set_up_tracing;
 use eyre::{bail, Context};
-use futures::stream;
+
 use std::{
     collections::BTreeSet,
     net::{Ipv4Addr, SocketAddr},
@@ -37,8 +37,8 @@ async fn main() -> eyre::Result<()> {
     let (coordinator_port, coordinator) =
         dora_coordinator::start(Some(0), ReceiverStream::new(coordinator_events_rx)).await?;
     let coordinator_addr = SocketAddr::new(Ipv4Addr::LOCALHOST.into(), coordinator_port);
-    let daemon_a = dora_daemon::Daemon::run(coordinator_addr, "A".into(), stream::empty());
-    let daemon_b = dora_daemon::Daemon::run(coordinator_addr, "B".into(), stream::empty());
+    let daemon_a = dora_daemon::Daemon::run(coordinator_addr, "A".into());
+    let daemon_b = dora_daemon::Daemon::run(coordinator_addr, "B".into());
 
     tracing::info!("Spawning coordinator and daemons");
     let mut tasks = JoinSet::new();