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swarm-nats-auth: take the subscribe subjects from the shared definitions

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The reader's subscribe allow-list spelled `$SWARM.term.*`,
`$SWARM.term.*.sub.*` and `$SWARM.agent-state.*` as literals, copies of
private prefixes in hive-agent and swarm-controller. A rename on either side
left the policy behind and the stream stopped with only a connection-level
server error.

swarm-queue-client now owns `term_subject`, `agent_state_subject` and their
`*_wildcard` forms, and `subagent_term::subject_wildcard`; hive-agent's
publishers, swarm-controller's relays and the policy all build from them.
Subjects are byte-identical.
This commit is contained in:
atlas 2026-10-07 16:51:53 +02:00
commit 1b061fc9d5
7 changed files with 92 additions and 85 deletions
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24
hive-agent/src/swarm_agent_state.rs
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@ -36,12 +36,6 @@ use swarm_queue_client::wanted::AgentState;
use crate::events::{Bus, BusEvent, LiveEvent, TurnState};
use crate::term_msg::iso8601_utc;
/// Subject family carrying agent turn-state headers, the swarm-wide
/// agreement this publisher holds up its end of. One leaf subject per
/// agent, matching `$SWARM.term`'s shape, so a subscriber can follow one
/// agent without filtering the swarm's whole header traffic.
const SUBJECT_PREFIX: &str = "$SWARM.agent-state";
/// How much room to leave under the announced limit for everything the
/// publish adds around the payload — subject, headers, protocol framing.
/// Same margin and same reasoning as `swarm_term::HEADROOM`.
@ -139,11 +133,6 @@ fn snapshot(bus: &Bus) -> AgentStateMsg {
}
}
/// The subject this agent's header goes to.
fn subject(agent: &str) -> String {
format!("{SUBJECT_PREFIX}.{agent}")
}
/// Start the publish task, if this agent has a label to name its subject with.
pub fn spawn(bus: &Bus) {
let agent = crate::identity::label();
@ -174,7 +163,7 @@ pub fn spawn(bus: &Bus) {
/// changes nothing.
async fn run(mut rx: broadcast::Receiver<BusEvent>, bus: Bus, agent: String) {
let client = crate::swarm_queue::client().await;
let subject = subject(&agent);
let subject = swarm_queue_client::agent_state_subject(&agent);
tracing::info!(subject, "publishing agent turn state to the swarm queue");
// The last payload actually sent, so a rebuild that changed nothing is
@ -260,7 +249,7 @@ async fn publish(
#[cfg(test)]
mod tests {
use super::{AgentStateMsg, subject};
use super::AgentStateMsg;
use crate::events::TurnState;
use swarm_queue_client::wanted::AgentState;
@ -306,15 +295,6 @@ mod tests {
}
}
/// The subject the swarm side subscribes to. `swarm-controller`'s relay
/// spells the same prefix in its own constant and the two never meet, so
/// this pins the half that lives here. The agent's own credential is
/// granted the subject naming the agent alone, with no hive in it.
#[test]
fn the_subject_is_the_prefix_then_the_agent() {
assert_eq!(subject("mara"), "$SWARM.agent-state.mara");
}
/// The published contract, asserted on the JSON a subscriber parses
/// rather than on the Rust struct: a renderer is written against these
/// key names, and renaming a field in Rust without noticing is exactly