feat: add the possiblity to add a node and a channel

Signed-off-by: Vincenzo Palazzo <[email protected]>

gossip_map/Cargo.toml

@@ -5,5 +5,7 @@ edition = "2021"
 
 [dependencies]
 byteorder = "1.4.3"
-fundamentals = "^0.0.1-alpha.2"
-fundamentals-derive = "^0.0.1-alpha.1"
+hex = "0.4.3"
+bitcoin = { version = "0.30.0" }
+fundamentals = "^0.0.1-alpha.3"
+fundamentals-derive = "^0.0.1-alpha.2"

gossip_map/src/flags.rs

@@ -4,14 +4,13 @@ pub static GOSSIP_STORE_MAJOR_VERSION: u16 = 0 << 5;
 pub static GOSSIP_STORE_MAJOR_VERSION_MASK: u16 = 0xE0;
 
 /// Deleted fields should be ignored: on restart, they will be removed as the gossip_store is rewritten.
-pub static GOSSIP_STORE_LEN_DELETED_BIT: u32 = 0x80000000;
+pub const GOSSIP_STORE_LEN_DELETED_BIT: u16 = 0x8000;
 /// The push flag indicates gossip which is generated locally: this is important for gossip timestamp filtering,
 /// where peers request gossip and we always send our own gossip messages even if the timestamp wasn't within their
-/// request.pub static GOSSIP_STORE_LEN_PUSH_BIT: u32 = 0x40000000;
-pub static GOSSIP_STORE_LEN_RATELIMIT_BIT: u32 = 0x20000000;
+pub const GOSSIP_STORE_LEN_PUSH_BIT: u16 = 0x4000;
 /// The ratelimit flag indicates that this gossip message came too fast.
 /// The message are corded in the gossip map, but don't relay it to peers.
-pub static GOSSIP_STORE_LEN_MASK: u16 = 0x0000FFFF;
+pub const GOSSIP_STORE_LEN_RATELIMIT_BIT: u16 = 0x2000;
 
 // These duplicate constants in lightning/gossipd/gossip_store_wiregen.h
 pub const WIRE_GOSSIP_STORE_PRIVATE_CHANNEL: u16 = 4104;

gossip_map/src/gossip_store_msg.rs

@@ -20,7 +20,7 @@ pub struct GossipStoreChannelAmount {
     #[warn(dead_code)]
     #[msg_type = 4101]
     ty: u16,
-    satoshis: u16,
+    pub satoshis: u64,
 }
 
 #[derive(DecodeWire, EncodeWire, Debug)]

gossip_map/src/lib.rs

@@ -1,14 +1,11 @@
-use std::{
-    collections::{HashMap, HashSet},
-    fs::File,
-    io::{BufReader, Error, ErrorKind},
-};
+#![allow(dead_code)]
+use std::collections::HashMap;
+use std::fs::File;
+use std::io::{BufReader, Error, ErrorKind};
 
-use fundamentals::{
-    bolt::bolt7::ChannelAnnouncement,
-    prelude::bolt7::{ChannelUpdate, NodeAnnouncement},
-};
-use fundamentals::{core::FromWire, types::ShortChannelId};
+use fundamentals::core::FromWire;
+use fundamentals::prelude::bolt7::{ChannelAnnouncement, ChannelUpdate, NodeAnnouncement};
+use fundamentals::types::ShortChannelId;
 
 mod flags;
 mod gossip_store_msg;
@@ -20,27 +17,28 @@ use flags::{
     WIRE_GOSSIP_STORE_PRIVATE_UPDATE,
 };
 use gossip_store_msg::*;
-use types::{GossipChannel, GossipNode, GossipNodeId};
+use types::{GossipChannel, GossipNode, GossipNodeId, GossipStoredHeader};
 
 /// Gossip map implementation, that allow you to manage the gossip_store
 /// written by core lightning.
-struct GossipMap<'a> {
+#[derive(Debug)]
+struct GossipMap {
     version: u8,
     stream: Option<BufReader<File>>,
-    nodes: HashMap<GossipNodeId, GossipNode<'a>>,
-    channels: HashMap<ShortChannelId, GossipChannel<'a>>,
-    orphan_channel_updates: HashSet<ChannelUpdate>,
+    nodes: HashMap<GossipNodeId, GossipNode>,
+    channels: HashMap<ShortChannelId, GossipChannel>,
+    orphan_channel_updates: HashMap<ShortChannelId, ChannelUpdate>,
 }
 
-impl GossipMap<'_> {
+impl GossipMap {
     // Create a new instance of the gossip map.
     pub fn new(version: u8) -> Self {
         GossipMap {
             version,
             stream: None,
             nodes: HashMap::new(),
             channels: HashMap::new(),
-            orphan_channel_updates: HashSet::new(),
+            orphan_channel_updates: HashMap::new(),
         }
     }
 
@@ -52,23 +50,27 @@ impl GossipMap<'_> {
             stream: Some(stream),
             nodes: HashMap::new(),
             channels: HashMap::new(),
-            orphan_channel_updates: HashSet::new(),
+            orphan_channel_updates: HashMap::new(),
         };
         gossip_map.refresh()?;
         Ok(gossip_map)
     }
 
-    pub fn get_channel(&self, short_chananel_id: &str) -> Option<&'static GossipChannel> {
+    pub fn get_channel(&self, short_chananel_id: &str) -> Option<&GossipChannel> {
         self.channels.get(short_chananel_id.as_bytes())
     }
 
-    pub fn get_node(&self, node_id: &str) -> Option<&'static GossipNode> {
-        // FIXME: store the node as String?
-        self.nodes.get(&GossipNodeId {
-            node_id: node_id.to_owned(),
-        })
+    pub fn get_node(&self, node_id: &str) -> Option<&GossipNode> {
+        let node_id = GossipNodeId::from(node_id);
+        self.nodes.get(&node_id)
     }
 
+    /// add a node announcement message inside the gossip map
+    fn add_node_announcement(&mut self, node_announce: NodeAnnouncement) {}
+
+    /// add a channel announcement message inside the gossip map.
+    fn add_channel_announcement(&mut self, channel_announce: ChannelAnnouncement) {}
+
     fn refresh(&mut self) -> std::io::Result<()> {
         let mut stream = self.stream.as_mut().unwrap();
         let version = u8::from_wire(&mut stream)? as u16;
@@ -79,38 +81,146 @@ impl GossipMap<'_> {
             ));
         }
         self.version = version as u8;
+        println!("version {version}");
 
-        while let Ok(chunk) = u8::from_wire(&mut stream) {
-            match chunk as u16 {
+        let mut last_short_channel_id: Option<ShortChannelId> = None;
+        loop {
+            let Ok(header) = GossipStoredHeader::from_wire(&mut stream) else {
+                break; // EOF?
+            };
+            match header.flag() {
+                flags::GOSSIP_STORE_LEN_DELETED_BIT | flags::GOSSIP_STORE_LEN_RATELIMIT_BIT => {
+                    continue
+                }
+                _ => {}
+            }
+
+            println!("header {:?}", header);
+            let chunk = u16::from_wire(&mut stream)?;
+            println!("chunk {chunk}");
+            match chunk {
                 // channel announcement!
                 256 => {
                     let channel_announcement = ChannelAnnouncement::from_wire(&mut stream)?;
+                    let node_one = GossipNodeId::from_bytes(&channel_announcement.node_id_1)?;
+                    let node_two = GossipNodeId::from_bytes(&channel_announcement.node_id_2)?;
+                    if !self.nodes.contains_key(&node_one) {
+                        let node = GossipNode::new(node_one.clone(), None);
+                        self.nodes.insert(node_one.clone(), node);
+                    }
+
+                    if !self.nodes.contains_key(&node_two) {
+                        let node = GossipNode::new(node_two.clone(), None);
+                        self.nodes.insert(node_two.clone(), node);
+                    }
+                    println!("{:?}", self.nodes);
+                    last_short_channel_id = Some(channel_announcement.short_channel_id);
+                    let channel = GossipChannel::new(channel_announcement, &node_one, &node_two);
+                    // SAFETY: this is sage because the node is always present, due the
+                    // previous checks.
+                    let node_one = self.nodes.get_mut(&node_one).unwrap();
+                    node_one.add_channel(&channel.clone());
+                    let node_two = self.nodes.get_mut(&node_two).unwrap();
+                    node_two.add_channel(&channel.clone());
+                    self.channels
+                        .insert(last_short_channel_id.unwrap(), channel);
                 }
                 WIRE_GOSSIP_STORE_PRIVATE_CHANNEL => {
-                    let private_channel = GossipStorePrivateChannel::from_wire(&mut stream)?;
+                    let _ = stream.seek_relative(2 + 8 + 2)?;
+                    let channel_announcement = ChannelAnnouncement::from_wire(&mut stream)?;
+
+                    let node_one = GossipNodeId::from_bytes(&channel_announcement.node_id_1)?;
+                    let node_two = GossipNodeId::from_bytes(&channel_announcement.node_id_2)?;
+                    if !self.nodes.contains_key(&node_one) {
+                        let node = GossipNode::new(node_one.clone(), None);
+                        self.nodes.insert(node_one.clone(), node);
+                    }
+
+                    if !self.nodes.contains_key(&node_two) {
+                        let node = GossipNode::new(node_two.clone(), None);
+                        self.nodes.insert(node_two.clone(), node);
+                    }
+
+                    last_short_channel_id = Some(channel_announcement.short_channel_id);
+                    let mut channel =
+                        GossipChannel::new(channel_announcement, &node_one, &node_two);
+                    // SAFETY: this is sage because the node is always present, due the
+                    // previous checks.
+                    let node_one = self.nodes.get_mut(&node_one).unwrap();
+                    node_one.add_channel(&channel.clone());
+                    let node_two = self.nodes.get_mut(&node_two).unwrap();
+                    node_two.add_channel(&channel.clone());
+                    channel.set_private(true);
+                    self.channels
+                        .insert(last_short_channel_id.unwrap(), channel);
                 }
                 WIRE_GOSSIP_STORE_CHANNEL_AMOUNT => {
                     let channel_amount = GossipStoreChannelAmount::from_wire(&mut stream)?;
+                    //FIXME: remove the unwrap().
+                    assert!(last_short_channel_id.is_some());
+                    let channel = self
+                        .channels
+                        .get_mut(&last_short_channel_id.unwrap())
+                        .unwrap();
+                    channel.set_amount(channel_amount);
                 }
                 WIRE_GOSSIP_STORE_PRIVATE_UPDATE => {
                     let private_update = GossipStorePrivateUpdate::from_wire(&mut stream)?;
+                    unimplemented!()
                 }
                 WIRE_GOSSIP_STORE_DELETE_CHAN => {
                     let del_chan = GossipStoreDeleteChan::from_wire(&mut stream)?;
+                    unimplemented!()
                 }
                 WIRE_GOSSIP_STORE_ENDED => {
-                    let eof = GossipStoreEnded::from_wire(&mut stream)?;
+                    let _ = GossipStoreEnded::from_wire(&mut stream)?;
+                    break;
                 }
                 257 => {
                     let node_announcement = NodeAnnouncement::from_wire(&mut stream)?;
+                    let node_id = GossipNodeId::from_bytes(&node_announcement.node_id)?;
+                    if !self.nodes.contains_key(&node_id) {
+                        let node = GossipNode::new(node_id.clone(), Some(node_announcement));
+                        self.nodes.insert(node_id, node);
+                    }
                 }
                 258 => {
                     let channel_update = ChannelUpdate::from_wire(&mut stream)?;
+                    if self.channels.contains_key(&channel_update.short_channel_id) {
+                        // SAFETY: we check the existence before!
+                        let channel = self
+                            .channels
+                            .get_mut(&channel_update.short_channel_id)
+                            .unwrap();
+                        channel.channel_update(&channel_update)
+                    } else {
+                        self.orphan_channel_updates
+                            .insert(channel_update.short_channel_id, channel_update);
+                    }
                 }
-                _ => continue,
+                _ => assert!(false),
             }
+            println!("----------------------------------------------------");
         }
 
         Ok(())
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn read_gossipmap_from_file() {
+        let path = "/run/media/vincent/VincentSSD/.lightning/testnet/gossip_store";
+        let pubkey = "03b39d1ddf13ce486de74e9e44e0538f960401a9ec75534ba9cfe4100d65426880";
+        let map = GossipMap::from_file(path);
+        assert!(map.is_ok(), "{:?}", map);
+        let map = map.unwrap();
+        assert!(
+            map.get_node(pubkey).is_some(),
+            "node with id `{pubkey}` not found!"
+        );
+    }
+}