chore: spawn local network example

ant-node/examples/spawn_local_network.rs

@@ -0,0 +1,51 @@
+use ant_evm::EvmTestnet;
+use ant_node::spawn::network::NetworkSpawner;
+use std::time::Duration;
+use tokio::time::sleep;
+use tracing_subscriber::layer::SubscriberExt;
+use tracing_subscriber::util::SubscriberInitExt;
+use tracing_subscriber::{fmt, EnvFilter};
+
+#[tokio::main]
+async fn main() {
+    tracing_subscriber::registry()
+        .with(fmt::layer())
+        .with(EnvFilter::from_env("RUST_LOG"))
+        .init();
+
+    // start local Ethereum node
+    let evm_testnet = EvmTestnet::new().await;
+    let evm_network = evm_testnet.to_network();
+    let network_size = 2;
+
+    let running_network = NetworkSpawner::new()
+        .with_evm_network(evm_network)
+        .with_local(true)
+        .with_size(network_size)
+        .spawn()
+        .await
+        .unwrap();
+
+    assert_eq!(running_network.running_nodes().len(), network_size);
+
+    // Validate each node's listen addresses are not empty
+    for node in running_network.running_nodes() {
+        let listen_addrs = node.get_listen_addrs().await.unwrap();
+
+        assert!(!listen_addrs.is_empty());
+    }
+
+    // Wait for nodes to dial each other
+    sleep(Duration::from_secs(20)).await;
+
+    // TODO: Validate that all nodes know each other
+    for node in running_network.running_nodes() {
+        let known_peers = node.get_swarm_local_state().await.unwrap().connected_peers;
+
+        println!("Known peers: {known_peers:?}");
+
+        // TODO: nodes do not know each other..
+    }
+
+    running_network.shutdown();
+}