[C Bindings] Expose channel and nodes list in `ReadOnlyNetworkGraph`

diff --git a/lightning/src/routing/gossip.rs b/lightning/src/routing/gossip.rs
index 37bf1ea5a6f9757d1da5a29f636aa0a853f2de8e..1757d13730045f9d4246c18a0c150fbd668de412 100644 (file)
--- a/lightning/src/routing/gossip.rs
+++ b/lightning/src/routing/gossip.rs
@@ -1796,6 +1796,12 @@ impl ReadOnlyNetworkGraph<'_> {
                self.channels.get(&short_channel_id)
        }
 
+       #[cfg(c_bindings)] // Non-bindings users should use `channels`
+       /// Returns the list of channels in the graph
+       pub fn list_channels(&self) -> Vec<u64> {
+               self.channels.keys().map(|c| *c).collect()
+       }
+
        /// Returns all known nodes' public keys along with announced node info.
        ///
        /// (C-not exported) because we have no mapping for `BTreeMap`s
@@ -1808,6 +1814,12 @@ impl ReadOnlyNetworkGraph<'_> {
                self.nodes.get(node_id)
        }
 
+       #[cfg(c_bindings)] // Non-bindings users should use `nodes`
+       /// Returns the list of nodes in the graph
+       pub fn list_nodes(&self) -> Vec<NodeId> {
+               self.nodes.keys().map(|n| *n).collect()
+       }
+
        /// Get network addresses by node id.
        /// Returns None if the requested node is completely unknown,
        /// or if node announcement for the node was never received.