feat: stop synchronizing interests

With this change the interests ring is no longer synchronized between
peers. A local node will still use the interest-svc to know its own
interests and the beginning of each Recon conversation negotiates shared
interests. Therefore it is no longer necessary to synchronize interests.

In the future we may decide that we want to use Recon to sync interests
instead of a linear sharing of interests before each conversation,
however that is only a performance optimization that is not important at
this stage.

Fixes #610
Fixes #611

one/src/daemon.rs

@@ -19,7 +19,7 @@ use ceramic_sql::sqlite::SqlitePool;
 use clap::Args;
 use object_store::aws::AmazonS3Builder;
 use object_store::local::LocalFileSystem;
-use recon::{FullInterests, Recon, ReconInterestProvider};
+use recon::{Recon, ReconInterestProvider};
 use signal_hook::consts::signal::*;
 use signal_hook_tokio::Signals;
 use std::sync::Arc;
@@ -530,13 +530,6 @@ pub async fn run(opts: DaemonOpts) -> Result<()> {
     // Construct a recon implementation for peers.
     let recon_peer = Recon::new(peer_svc.clone(), PeerKeyInterests, recon_metrics.clone());
 
-    // Construct a recon implementation for interests.
-    let recon_interest = Recon::new(
-        interest_svc.clone(),
-        FullInterests::default(),
-        recon_metrics.clone(),
-    );
-
     // Construct a recon implementation for models.
     let recon_model = Recon::new(
         model_svc.clone(),
@@ -545,7 +538,7 @@ pub async fn run(opts: DaemonOpts) -> Result<()> {
         recon_metrics,
     );
 
-    let recons = Some((recon_peer, recon_interest, recon_model));
+    let recons = Some((recon_peer, recon_model));
     let ipfs_metrics =
         ceramic_metrics::MetricsHandle::register(ceramic_kubo_rpc::IpfsMetrics::register);
     let p2p_metrics = MetricsHandle::register(ceramic_p2p::Metrics::register);

one/src/network.rs

@@ -4,7 +4,7 @@ use std::sync::Arc;
 
 use anyhow::{anyhow, Result};
 use async_trait::async_trait;
-use ceramic_core::{EventId, Interest, NodeId, NodeKey, PeerKey};
+use ceramic_core::{EventId, NodeId, NodeKey, PeerKey};
 use ceramic_kubo_rpc::{IpfsMetrics, IpfsMetricsMiddleware, IpfsService};
 use ceramic_p2p::{Config as P2pConfig, Libp2pConfig, Node, PeerService};
 use iroh_rpc_client::P2pClient;
@@ -34,18 +34,17 @@ impl BuilderState for WithP2p {}
 
 /// Configure the p2p service
 impl Builder<Init> {
-    pub async fn with_p2p<P, I, M, S>(
+    pub async fn with_p2p<P, M, S>(
         self,
         libp2p_config: Libp2pConfig,
         node_key: NodeKey,
         peer_svc: impl PeerService + 'static,
-        recons: Option<(P, I, M)>,
+        recons: Option<(P, M)>,
         block_store: Arc<S>,
         metrics: ceramic_p2p::Metrics,
     ) -> anyhow::Result<Builder<WithP2p>>
     where
         P: Recon<Key = PeerKey, Hash = Sha256a>,
-        I: Recon<Key = Interest, Hash = Sha256a>,
         M: Recon<Key = EventId, Hash = Sha256a>,
         S: iroh_bitswap::Store,
     {

p2p/src/behaviour.rs

@@ -1,7 +1,7 @@
 use std::time::Duration;
 
 use anyhow::Result;
-use ceramic_core::{EventId, Interest, PeerKey};
+use ceramic_core::{EventId, PeerKey};
 use iroh_bitswap::{Bitswap, Block, Config as BitswapConfig};
 use libp2p::{
     autonat,
@@ -36,7 +36,7 @@ pub const AGENT_VERSION: &str = concat!("ceramic-one/", env!("CARGO_PKG_VERSION"
 /// Libp2p behaviour for the node.
 #[derive(NetworkBehaviour)]
 #[behaviour(to_swarm = "Event")]
-pub(crate) struct NodeBehaviour<P, I, M, S>
+pub(crate) struct NodeBehaviour<P, M, S>
 where
     S: iroh_bitswap::Store + Send + Sync,
 {
@@ -56,21 +56,20 @@ where
     relay: Toggle<relay::Behaviour>,
     relay_client: Toggle<relay::client::Behaviour>,
     dcutr: Toggle<dcutr::Behaviour>,
-    recon: Toggle<recon::libp2p::Behaviour<P, I, M>>,
+    recon: Toggle<recon::libp2p::Behaviour<P, M>>,
 }
 
-impl<P, I, M, S> NodeBehaviour<P, I, M, S>
+impl<P, M, S> NodeBehaviour<P, M, S>
 where
     P: Recon<Key = PeerKey, Hash = Sha256a> + Send + Sync,
-    I: Recon<Key = Interest, Hash = Sha256a> + Send + Sync,
     M: Recon<Key = EventId, Hash = Sha256a> + Send + Sync,
     S: iroh_bitswap::Store + Send + Sync,
 {
     pub async fn new(
         local_key: &Keypair,
         config: &Libp2pConfig,
         relay_client: Option<relay::client::Behaviour>,
-        recons: Option<(P, I, M)>,
+        recons: Option<(P, M)>,
         block_store: Arc<S>,
         peers_tx: tokio::sync::mpsc::Sender<peers::Message>,
         metrics: Metrics,
@@ -186,8 +185,8 @@ where
                 .with_max_pending_incoming(Some(config.max_conns_pending_in))
                 .with_max_established_per_peer(Some(config.max_conns_per_peer)),
         );
-        let recon = recons.map(|(peer, interest, model)| {
-            recon::libp2p::Behaviour::new(peer, interest, model, recon::libp2p::Config::default())
+        let recon = recons.map(|(peer, model)| {
+            recon::libp2p::Behaviour::new(peer, model, recon::libp2p::Config::default())
         });
         Ok(NodeBehaviour {
             ping: Ping::default(),

p2p/src/node.rs

@@ -7,7 +7,7 @@ use std::{sync::atomic::Ordering, time::Duration};
 
 use ahash::AHashMap;
 use anyhow::{anyhow, bail, Context, Result};
-use ceramic_core::{EventId, Interest, NodeKey, PeerKey};
+use ceramic_core::{EventId, NodeKey, PeerKey};
 use ceramic_metrics::{libp2p_metrics, Recorder};
 use cid::Cid;
 use futures_util::stream::StreamExt;
@@ -62,15 +62,14 @@ pub enum NetworkEvent {
 /// Node implements a peer to peer node that participates on the Ceramic network.
 ///
 /// Node provides an external API via RpcMessages.
-pub struct Node<P, I, M, S>
+pub struct Node<P, M, S>
 where
     P: Recon<Key = PeerKey, Hash = Sha256a>,
-    I: Recon<Key = Interest, Hash = Sha256a>,
     M: Recon<Key = EventId, Hash = Sha256a>,
     S: iroh_bitswap::Store,
 {
     metrics: Metrics,
-    swarm: Swarm<NodeBehaviour<P, I, M, S>>,
+    swarm: Swarm<NodeBehaviour<P, M, S>>,
     supported_protocols: HashSet<String>,
     net_receiver_in: Receiver<RpcMessage>,
     dial_queries: AHashMap<PeerId, Vec<OneShotSender<Result<()>>>>,
@@ -92,10 +91,9 @@ where
     active_address_probe: Option<Multiaddr>,
 }
 
-impl<P, I, M, S> fmt::Debug for Node<P, I, M, S>
+impl<P, M, S> fmt::Debug for Node<P, M, S>
 where
     P: Recon<Key = PeerKey, Hash = Sha256a>,
-    I: Recon<Key = Interest, Hash = Sha256a>,
     M: Recon<Key = EventId, Hash = Sha256a>,
     S: iroh_bitswap::Store,
 {
@@ -128,10 +126,9 @@ const NICE_INTERVAL: Duration = Duration::from_secs(6);
 const BOOTSTRAP_INTERVAL: Duration = Duration::from_secs(5 * 60);
 const EXPIRY_INTERVAL: Duration = Duration::from_secs(1);
 
-impl<P, I, M, S> Drop for Node<P, I, M, S>
+impl<P, M, S> Drop for Node<P, M, S>
 where
     P: Recon<Key = PeerKey, Hash = Sha256a>,
-    I: Recon<Key = Interest, Hash = Sha256a>,
     M: Recon<Key = EventId, Hash = Sha256a>,
     S: iroh_bitswap::Store,
 {
@@ -143,12 +140,10 @@ where
 
 // Allow IntoConnectionHandler deprecated associated type.
 // We are not using IntoConnectionHandler directly only referencing the type as part of this event signature.
-type NodeSwarmEvent<P, I, M, S> =
-    SwarmEvent<<NodeBehaviour<P, I, M, S> as NetworkBehaviour>::ToSwarm>;
-impl<P, I, M, S> Node<P, I, M, S>
+type NodeSwarmEvent<P, M, S> = SwarmEvent<<NodeBehaviour<P, M, S> as NetworkBehaviour>::ToSwarm>;
+impl<P, M, S> Node<P, M, S>
 where
     P: Recon<Key = PeerKey, Hash = Sha256a> + Send + Sync,
-    I: Recon<Key = Interest, Hash = Sha256a> + Send + Sync,
     M: Recon<Key = EventId, Hash = Sha256a> + Send + Sync,
     S: iroh_bitswap::Store + Send + Sync,
 {
@@ -157,7 +152,7 @@ where
         rpc_addr: P2pAddr,
         node_key: NodeKey,
         peer_svc: impl PeerService + 'static,
-        recons: Option<(P, I, M)>,
+        recons: Option<(P, M)>,
         block_store: Arc<S>,
         metrics: Metrics,
     ) -> Result<Self> {
@@ -494,7 +489,7 @@ where
     #[tracing::instrument(skip_all)]
     async fn handle_swarm_event(
         &mut self,
-        event: NodeSwarmEvent<P, I, M, S>,
+        event: NodeSwarmEvent<P, M, S>,
     ) -> Result<Option<SwarmEventResult>> {
         libp2p_metrics().record(&event);
         match event {

p2p/src/swarm.rs

@@ -1,5 +1,5 @@
 use anyhow::Result;
-use ceramic_core::{EventId, Interest, PeerKey};
+use ceramic_core::{EventId, PeerKey};
 use libp2p::{dns, noise, relay, tcp, tls, yamux, Swarm, SwarmBuilder};
 use libp2p_identity::Keypair;
 use recon::{libp2p::Recon, Sha256a};
@@ -28,17 +28,16 @@ fn get_dns_config() -> (dns::ResolverConfig, dns::ResolverOpts) {
     }
 }
 
-pub(crate) async fn build_swarm<P, I, M, S>(
+pub(crate) async fn build_swarm<P, M, S>(
     config: &Libp2pConfig,
     keypair: Keypair,
-    recons: Option<(P, I, M)>,
+    recons: Option<(P, M)>,
     block_store: Arc<S>,
     peers_tx: tokio::sync::mpsc::Sender<peers::Message>,
     metrics: Metrics,
-) -> Result<Swarm<NodeBehaviour<P, I, M, S>>>
+) -> Result<Swarm<NodeBehaviour<P, M, S>>>
 where
     P: Recon<Key = PeerKey, Hash = Sha256a>,
-    I: Recon<Key = Interest, Hash = Sha256a>,
     M: Recon<Key = EventId, Hash = Sha256a>,
     S: iroh_bitswap::Store,
 {
@@ -105,18 +104,17 @@ where
     }
 }
 
-fn new_behavior<P, I, M, S>(
+fn new_behavior<P, M, S>(
     config: &Libp2pConfig,
     keypair: &Keypair,
     relay_client: Option<relay::client::Behaviour>,
-    recons: Option<(P, I, M)>,
+    recons: Option<(P, M)>,
     block_store: Arc<S>,
     peers_tx: tokio::sync::mpsc::Sender<peers::Message>,
     metrics: Metrics,
-) -> Result<NodeBehaviour<P, I, M, S>>
+) -> Result<NodeBehaviour<P, M, S>>
 where
     P: Recon<Key = PeerKey, Hash = Sha256a> + Send,
-    I: Recon<Key = Interest, Hash = Sha256a> + Send,
     M: Recon<Key = EventId, Hash = Sha256a> + Send,
     S: iroh_bitswap::Store,
 {

recon/src/libp2p.rs

@@ -20,7 +20,7 @@ mod upgrade;
 pub use crate::protocol::Recon;
 pub use stream_set::StreamSet;
 
-use ceramic_core::{EventId, Interest, PeerKey};
+use ceramic_core::{EventId, PeerKey};
 use futures::{future::BoxFuture, FutureExt};
 use libp2p::{
     core::ConnectedPoint,
@@ -43,8 +43,6 @@ use crate::{
 
 /// Name of the Recon protocol for synchronizing peers
 pub const PROTOCOL_NAME_PEER: &str = "/ceramic/recon/0.1.0/peer";
-/// Name of the Recon protocol for synchronizing interests
-pub const PROTOCOL_NAME_INTEREST: &str = "/ceramic/recon/0.1.0/interest";
 /// Name of the Recon protocol for synchronizing models
 pub const PROTOCOL_NAME_MODEL: &str = "/ceramic/recon/0.1.0/model";
 
@@ -76,9 +74,8 @@ impl Default for Config {
 /// The Behavior tracks all peers on the network that speak the Recon protocol.
 /// It is responsible for starting and stopping syncs with various peers depending on the needs of
 /// the application.
-pub struct Behaviour<P, I, M> {
+pub struct Behaviour<P, M> {
     peer: P,
-    interest: I,
     model: M,
     config: Config,
     peers: BTreeMap<PeerId, PeerInfo>,
@@ -87,15 +84,13 @@ pub struct Behaviour<P, I, M> {
     next_sync: Option<BoxFuture<'static, ()>>,
 }
 
-impl<P, I, M> std::fmt::Debug for Behaviour<P, I, M>
+impl<P, M> std::fmt::Debug for Behaviour<P, M>
 where
     P: std::fmt::Debug,
-    I: std::fmt::Debug,
     M: std::fmt::Debug,
 {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
         f.debug_struct("Behaviour")
-            .field("interest", &self.interest)
             .field("model", &self.model)
             .field("config", &self.config)
             .field("peers", &self.peers)
@@ -148,18 +143,16 @@ pub enum PeerStatus {
     Stopped,
 }
 
-impl<P, I, M> Behaviour<P, I, M> {
+impl<P, M> Behaviour<P, M> {
     /// Create a new Behavior with the provided Recon implementation.
-    pub fn new(peer: P, interest: I, model: M, config: Config) -> Self
+    pub fn new(peer: P, model: M, config: Config) -> Self
     where
         P: Recon<Key = PeerKey, Hash = Sha256a>,
-        I: Recon<Key = Interest, Hash = Sha256a>,
         M: Recon<Key = EventId, Hash = Sha256a>,
     {
         let (tx, rx) = tokio::sync::mpsc::channel(1000);
         Self {
             peer,
-            interest,
             model,
             config,
             peers: BTreeMap::new(),
@@ -178,13 +171,12 @@ impl<P, I, M> Behaviour<P, I, M> {
     }
 }
 
-impl<P, I, M> NetworkBehaviour for Behaviour<P, I, M>
+impl<P, M> NetworkBehaviour for Behaviour<P, M>
 where
     P: Recon<Key = PeerKey, Hash = Sha256a>,
-    I: Recon<Key = Interest, Hash = Sha256a>,
     M: Recon<Key = EventId, Hash = Sha256a>,
 {
-    type ConnectionHandler = Handler<P, I, M>;
+    type ConnectionHandler = Handler<P, M>;
 
     type ToSwarm = Event;
 
@@ -205,13 +197,8 @@ where
                         next_sync: BTreeMap::from_iter([
                             // Schedule all stream_sets initially
                             (StreamSet::Peer, Instant::now()),
-                            // Schedule interests after peers
-                            (
-                                StreamSet::Interest,
-                                Instant::now() + Duration::from_millis(1),
-                            ),
-                            // Schedule models after interests
-                            (StreamSet::Model, Instant::now() + Duration::from_millis(2)),
+                            // Schedule models after peers
+                            (StreamSet::Model, Instant::now() + Duration::from_millis(1)),
                         ]),
                         sync_delay: Default::default(),
                     });
@@ -395,7 +382,6 @@ where
             connection_id,
             handler::State::WaitingInbound,
             self.peer.clone(),
-            self.interest.clone(),
             self.model.clone(),
         ))
     }
@@ -416,7 +402,6 @@ where
                 stream_set: StreamSet::Peer,
             },
             self.peer.clone(),
-            self.interest.clone(),
             self.model.clone(),
         ))
     }