Implement skeleton network/sync framework.

beacon_node/libp2p/Cargo.toml

@@ -5,3 +5,6 @@ authors = ["Age Manning <Age@AgeManning.com>"]
 edition = "2018"
 
 [dependencies]
+# SigP repository until PR is merged
+libp2p =  { git = "https://github.com/SigP/rust-libp2p", branch = "gossipsub" }
+slog = "2.4.1"

beacon_node/libp2p/src/lib.rs

@@ -2,10 +2,11 @@
 /// all required libp2p functionality.
 ///
 /// This crate builds and manages the libp2p services required by the beacon node.
-extern crate libp2p;
+mod service;
 
-mod libp2p_service;
+pub use libp2p::{
+    gossipsub::{GossipsubConfig, GossipsubConfigBuilder},
+    PeerId,
+};
 
-pub use libp2p::{GossipsubConfig, PeerId};
-
-pub use libp2p_service::LibP2PService;
+pub use service::Service;

beacon_node/libp2p/src/service.rs

@@ -0,0 +1,11 @@
+use slog::debug;
+
+/// The configuration and state of the libp2p components for the beacon node.
+pub struct Service {}
+
+impl Service {
+    pub fn new(log: slog::Logger) -> Self {
+        debug!(log, "Service starting");
+        Service {}
+    }
+}