Merge pull request #165 from carlaKC/sim-node

Add Ability to Run as Full Simulator

Author: carlaKC

Cargo.lock

@@ -15,7 +15,7 @@ expanduser = "1.2.2"
 serde = { version="1.0.183", features=["derive"] }
 serde_json = "1.0.104"
 bitcoin = { version = "0.30.1", features=["serde"] }
-lightning = { version = "0.0.116" }
+lightning = { version = "0.0.121" }
 tonic_lnd = { package="fedimint-tonic-lnd", version="0.1.2", features=["lightningrpc", "routerrpc"]}
 tonic = { version = "0.8", features = ["tls", "transport"] }
 async-trait = "0.1.73"

sim-lib/Cargo.toml

@@ -27,6 +27,7 @@ mod defined_activity;
 pub mod lnd;
 mod random_activity;
 mod serializers;
+pub mod sim_node;
 #[cfg(test)]
 mod test_utils;
 
@@ -84,6 +85,37 @@ impl std::fmt::Display for NodeId {
     }
 }
 
+/// Represents a short channel ID, expressed as a struct so that we can implement display for the trait.
+#[derive(Debug, Clone, PartialEq, Eq, Hash, Copy)]
+pub struct ShortChannelID(u64);
+
+/// Utility function to easily convert from u64 to `ShortChannelID`
+impl From<u64> for ShortChannelID {
+    fn from(value: u64) -> Self {
+        ShortChannelID(value)
+    }
+}
+
+/// Utility function to easily convert `ShortChannelID` into u64
+impl From<ShortChannelID> for u64 {
+    fn from(scid: ShortChannelID) -> Self {
+        scid.0
+    }
+}
+
+/// See https://github.com/lightning/bolts/blob/60de4a09727c20dea330f9ee8313034de6e50594/07-routing-gossip.md#definition-of-short_channel_id.
+impl std::fmt::Display for ShortChannelID {
+    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
+        write!(
+            f,
+            "{}:{}:{}",
+            (self.0 >> 40) as u32,
+            ((self.0 >> 16) & 0xFFFFFF) as u32,
+            (self.0 & 0xFFFF) as u16,
+        )
+    }
+}
+
 #[derive(Debug, Serialize, Deserialize, Clone)]
 pub struct SimParams {
     pub nodes: Vec<NodeConnection>,
@@ -133,6 +165,8 @@ pub enum SimulationError {
     FileError,
     #[error("{0}")]
     RandomActivityError(RandomActivityError),
+    #[error("Simulated Network Error: {0}")]
+    SimulatedNetworkError(String),
 }
 
 #[derive(Debug, Error)]