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Subscribe to peer pubsub snapshots

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This commit is contained in:
Eric Wendland 2026-05-19 15:28:48 +02:00
commit df70b81a1d
8 changed files with 332 additions and 20 deletions
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194
crates/geth-node/src/lib.rs
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@ -273,6 +273,10 @@ pub async fn handle_request_async(
message,
node: Some(peer_node),
} => pubsub_publish_to_peer(node, &peer_node, topic, message).await,
ControlRequest::PubsubSub {
topic,
node: Some(peer_node),
} => pubsub_subscribe_from_peer(node, &peer_node, topic).await,
ControlRequest::PipeConnect {
target,
node: Some(peer_node),
@ -560,6 +564,7 @@ async fn peer_ping(node: &LocalNode, peer_node: &str) -> Result<ControlResponse,
| PeerControlResponse::SshRevocationSynced { .. }
| PeerControlResponse::KvSynced { .. }
| PeerControlResponse::PubsubPublished { .. }
| PeerControlResponse::PubsubSubscribed { .. }
| PeerControlResponse::PipeConnected { .. }
| PeerControlResponse::DocumentSynced { .. }
| PeerControlResponse::DbSynced { .. } => Err(NodeError::IrohPeer(
@ -673,6 +678,7 @@ async fn peer_auth_check(
| PeerControlResponse::SshRevocationSynced { .. }
| PeerControlResponse::KvSynced { .. }
| PeerControlResponse::PubsubPublished { .. }
| PeerControlResponse::PubsubSubscribed { .. }
| PeerControlResponse::PipeConnected { .. }
| PeerControlResponse::DocumentSynced { .. }
| PeerControlResponse::DbSynced { .. } => Err(NodeError::IrohPeer(
@ -815,6 +821,7 @@ async fn cas_fetch_from_peer(
| PeerControlResponse::SshRevocationSynced { .. }
| PeerControlResponse::KvSynced { .. }
| PeerControlResponse::PubsubPublished { .. }
| PeerControlResponse::PubsubSubscribed { .. }
| PeerControlResponse::PipeConnected { .. }
| PeerControlResponse::DocumentSynced { .. }
| PeerControlResponse::DbSynced { .. } => Err(NodeError::IrohPeer(
@ -1093,6 +1100,51 @@ async fn pubsub_publish_to_peer(
}
}
async fn pubsub_subscribe_from_peer(
node: &LocalNode,
peer_node: &str,
topic: String,
) -> Result<ControlResponse, NodeError> {
geth_pubsub::validate_topic(&topic)?;
let response = request_peer_control(node, peer_node, "pubsub-subscribe", |peer_card, nonce| {
PeerControlRequest::PubsubSubscribe {
peer_card,
topic: topic.clone(),
nonce,
}
})
.await?;
match response {
PeerControlResponse::PubsubSubscribed {
node_id,
agent_id,
endpoint_id,
topic: response_topic,
messages,
allowed,
reason,
note,
..
} if response_topic == topic => Ok(ControlResponse::PubsubRemoteMessages {
peer_node_id: node_id,
peer_agent_id: agent_id,
endpoint_id,
topic: response_topic,
messages,
allowed,
reason,
note,
}),
PeerControlResponse::PubsubSubscribed { .. } => Err(NodeError::IrohPeer(
"peer pubsub subscribe response did not match request".to_owned(),
)),
PeerControlResponse::Error { message } => Err(NodeError::IrohPeer(message)),
_ => Err(NodeError::IrohPeer(
"peer returned wrong response type to pubsub subscribe".to_owned(),
)),
}
}
async fn pipe_connect_to_peer(
node: &LocalNode,
peer_node: &str,
@ -1549,6 +1601,10 @@ async fn request_peer_control(
nonce: response_nonce,
..
}
| PeerControlResponse::PubsubSubscribed {
nonce: response_nonce,
..
}
| PeerControlResponse::PipeConnected {
nonce: response_nonce,
..
@ -2082,6 +2138,52 @@ async fn handle_iroh_control_connection(
note: "pubsub publish authenticated endpoint/card binding and required pubsub.publish on the remote topic resource; pubsub is lossy".to_owned(),
}
}
PeerControlRequest::PubsubSubscribe {
peer_card,
topic,
nonce,
} => {
geth_pubsub::validate_topic(&topic)?;
peer_card.validate_candidate()?;
ensure_peer_card_matches_endpoint(&peer_card, &remote_endpoint_id)?;
let discovered = DiscoveredPeer::candidate(
peer_card.clone(),
UnixMillis(geth_store::now_ms()),
DiscoverySource::PeerExchange,
)?;
let store = Store::open(&node.paths.metadata_db())?;
store.upsert_peer_card(&StoredPeerCard {
peer_id: peer_card.node_id.to_string(),
card_json: serde_json::to_string(&peer_card)?,
updated_at_ms: discovered.discovered_at.0,
})?;
let resource = format!("resource:pubsub:{topic}");
let capability = "pubsub.subscribe".to_owned();
let explanation = geth_auth::explain_auth_ops(
&load_auth_ops_for_resource(&store, &resource)?,
PrincipalId::new(peer_card.node_id.to_string()),
ResourceId::new(resource),
Capability::new(capability),
);
let messages = if explanation.allowed {
pubsub_messages_for_topic(&node, &topic)?
} else {
Vec::new()
};
PeerControlResponse::PubsubSubscribed {
node_id: node.node_id.clone(),
agent_id: node.agent_id.clone(),
endpoint_id: node.iroh_status.endpoint_id.clone().unwrap_or_default(),
remote_endpoint_id,
topic,
messages,
allowed: explanation.allowed,
reason: explanation.reason,
evaluated_ops: explanation.evaluated_ops,
nonce,
note: "pubsub subscribe authenticated endpoint/card binding and required pubsub.subscribe on the remote topic resource; pubsub is lossy daemon-lifetime state".to_owned(),
}
}
PeerControlRequest::PipeConnect {
peer_card,
target,
@ -3266,25 +3368,16 @@ pub fn handle_request(
Ok(ControlResponse::PubsubPublished { message })
}
ControlRequest::PubsubPub { node: Some(_), .. } => Err(NodeError::IrohEndpointUnavailable),
ControlRequest::PubsubSub { topic } => {
ControlRequest::PubsubSub { topic, node: None } => {
geth_pubsub::validate_topic(&topic)?;
let runtime = node
.runtime
.pubsub
.lock()
.map_err(|_| NodeError::RuntimeLockPoisoned)?;
let messages = runtime
.messages
.iter()
.filter(|message| message.topic.as_str() == topic)
.cloned()
.collect();
let messages = pubsub_messages_for_topic(node, &topic)?;
Ok(ControlResponse::PubsubMessages {
topic,
messages,
note: geth_pubsub::pubsub_storage_warning().to_owned(),
})
}
ControlRequest::PubsubSub { node: Some(_), .. } => Err(NodeError::IrohEndpointUnavailable),
ControlRequest::PipeListen { name } => {
geth_pipe::validate_pipe_name(&name)?;
let listener = PipeListener {
@ -3428,6 +3521,23 @@ fn record_pubsub_message(
Ok(message)
}
fn pubsub_messages_for_topic(
node: &LocalNode,
topic: &str,
) -> Result<Vec<PubsubMessage>, NodeError> {
let runtime = node
.runtime
.pubsub
.lock()
.map_err(|_| NodeError::RuntimeLockPoisoned)?;
Ok(runtime
.messages
.iter()
.filter(|message| message.topic.as_str() == topic)
.cloned()
.collect())
}
fn record_pipe_connection(
node: &LocalNode,
target: String,
@ -4319,6 +4429,29 @@ mod tests {
other => panic!("unexpected denied pubsub publish response: {other:?}"),
}
let denied_pubsub_subscribe = handle_request_async(
&left,
ControlRequest::PubsubSub {
topic: "presence/test".to_owned(),
node: Some(right_card.node_id.to_string()),
},
)
.await
.expect("denied remote pubsub subscribe");
match denied_pubsub_subscribe {
ControlResponse::PubsubRemoteMessages {
allowed,
messages,
reason,
..
} => {
assert!(!allowed);
assert!(messages.is_empty());
assert!(reason.contains("no active direct or group grant"));
}
other => panic!("unexpected denied pubsub subscribe response: {other:?}"),
}
let denied_pipe = handle_request_async(
&left,
ControlRequest::PipeConnect {
@ -4421,6 +4554,16 @@ mod tests {
},
)
.expect("grant left pubsub publish");
handle_request(
&right,
ControlRequest::AuthGrant {
subject: left.node_id.clone(),
resource: "resource:pubsub:presence/test".to_owned(),
capability: "pubsub.subscribe".to_owned(),
grant_id: Some("grant:left-pubsub-subscribe".to_owned()),
},
)
.expect("grant left pubsub subscribe");
handle_request(
&right,
ControlRequest::AuthGrant {
@ -4578,6 +4721,7 @@ mod tests {
&right,
ControlRequest::PubsubSub {
topic: "presence/test".to_owned(),
node: None,
},
)
.expect("right pubsub sub after remote publish");
@ -4589,6 +4733,32 @@ mod tests {
other => panic!("unexpected remote pubsub messages response: {other:?}"),
}
let subscribed = handle_request_async(
&left,
ControlRequest::PubsubSub {
topic: "presence/test".to_owned(),
node: Some(right_card.node_id.to_string()),
},
)
.await
.expect("allowed remote pubsub subscribe");
match subscribed {
ControlResponse::PubsubRemoteMessages {
allowed,
messages,
reason,
note,
..
} => {
assert!(allowed);
assert_eq!(messages.len(), 1);
assert_eq!(messages[0].message, "hello");
assert!(reason.contains("direct grant"));
assert!(note.contains("pubsub.subscribe"));
}
other => panic!("unexpected allowed pubsub subscribe response: {other:?}"),
}
let remote_pipe = handle_request_async(
&left,
ControlRequest::PipeConnect {