From 974fd8586304046de7faf514450bd998762e538d Mon Sep 17 00:00:00 2001
From: behzad nouri <behzadnouri@gmail.com>
Date: Fri, 10 Jan 2025 09:14:50 -0600
Subject: [PATCH] removes SocketAddrCache from pub interface

---
 gossip/src/contact_info.rs   |  2 +-
 turbine/src/cluster_nodes.rs | 38 ++++++++++++++++++++----------------
 2 files changed, 22 insertions(+), 18 deletions(-)

diff --git a/gossip/src/contact_info.rs b/gossip/src/contact_info.rs
index 42c7dd67d52f2a..1c727b9082698f 100644
--- a/gossip/src/contact_info.rs
+++ b/gossip/src/contact_info.rs
@@ -43,7 +43,7 @@ const SOCKET_TAG_TVU_QUIC: u8 = 11;
 const_assert_eq!(SOCKET_CACHE_SIZE, 13);
 const SOCKET_CACHE_SIZE: usize = SOCKET_TAG_TPU_VOTE_QUIC as usize + 1usize;
 
-pub type SocketAddrCache = [SocketAddr; SOCKET_CACHE_SIZE];
+pub(crate) type SocketAddrCache = [SocketAddr; SOCKET_CACHE_SIZE];
 
 // A trait alias for a function that reads data from a ContactInfo entry stored
 // in the gossip CRDS table.
diff --git a/turbine/src/cluster_nodes.rs b/turbine/src/cluster_nodes.rs
index d2262ad29e01d3..43f3b20c7492d5 100644
--- a/turbine/src/cluster_nodes.rs
+++ b/turbine/src/cluster_nodes.rs
@@ -6,7 +6,7 @@ use {
     solana_feature_set as feature_set,
     solana_gossip::{
         cluster_info::ClusterInfo,
-        contact_info::{ContactInfo as GossipContactInfo, Protocol, SocketAddrCache},
+        contact_info::{ContactInfo as GossipContactInfo, Protocol},
         crds::GossipRoute,
         crds_data::CrdsData,
         crds_gossip_pull::CRDS_GOSSIP_PULL_CRDS_TIMEOUT_MS,
@@ -26,7 +26,6 @@ use {
     solana_streamer::socket::SocketAddrSpace,
     std::{
         any::TypeId,
-        borrow::Borrow,
         cmp::Ordering,
         collections::{HashMap, HashSet},
         iter::repeat_with,
@@ -310,6 +309,23 @@ pub fn new_cluster_nodes<T: 'static>(
     }
 }
 
+// Defines a closure which converts from &GossipContactInfo<_> to ContactInfo.
+// Same can be achieved with
+//   impl<T: Borrow<SocketAddrCache>> From<&GossipContactInfo<T>> for ContactInfo
+// but SocketAddrCache type is a private to gossip.
+macro_rules! from_gossip_node {
+    () => {
+        |node: &GossipContactInfo<_>| -> ContactInfo {
+            ContactInfo {
+                pubkey: *node.pubkey(),
+                wallclock: node.wallclock(),
+                tvu_quic: node.tvu(Protocol::QUIC),
+                tvu_udp: node.tvu(Protocol::UDP),
+            }
+        }
+    };
+}
+
 // All staked nodes + other known tvu-peers + the node itself;
 // sorted by (stake, pubkey) in descending order.
 fn get_nodes(
@@ -325,14 +341,14 @@ fn get_nodes(
     let mut nodes: Vec<Node> = std::iter::once({
         // The local node itself.
         let stake = stakes.get(&self_pubkey).copied().unwrap_or_default();
-        let node = ContactInfo::from(&cluster_info.my_contact_info());
+        let node = from_gossip_node!()(&cluster_info.my_contact_info());
         let node = NodeId::from(node);
         Node { node, stake }
     })
     // All known tvu-peers from gossip.
     .chain(
         cluster_info
-            .tvu_peers(|node| ContactInfo::from(node))
+            .tvu_peers(from_gossip_node!())
             .into_iter()
             .map(|node| {
                 let stake = stakes.get(node.pubkey()).copied().unwrap_or_default();
@@ -572,18 +588,6 @@ impl From<Pubkey> for NodeId {
     }
 }
 
-impl<T: Borrow<SocketAddrCache>> From<&GossipContactInfo<T>> for ContactInfo {
-    #[inline]
-    fn from(node: &GossipContactInfo<T>) -> Self {
-        Self {
-            pubkey: *node.pubkey(),
-            wallclock: node.wallclock(),
-            tvu_quic: node.tvu(Protocol::QUIC),
-            tvu_udp: node.tvu(Protocol::UDP),
-        }
-    }
-}
-
 #[inline]
 pub(crate) fn get_broadcast_protocol(_: &ShredId) -> Protocol {
     Protocol::UDP
@@ -992,7 +996,7 @@ mod tests {
             let node = GossipContactInfo::new_localhost(&pubkey, /*wallclock:*/ timestamp());
             [
                 Node {
-                    node: NodeId::from(ContactInfo::from(&node)),
+                    node: NodeId::from(from_gossip_node!()(&node)),
                     stake,
                 },
                 Node {