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hive-c0re + harness: filter agent-sockets.json by .bound marker (#784, atlas concern)

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closes the gate atlas raised on PR #813: without per-agent opt-in
signal, agent-sockets.json listed every sub-agent, and any agent
that hadn't flipped hyperhive.web.useUnixSocket would 502 the
gateway (its harness still binds TCP, no socket at the published
path).

harness side (web_ui::bind_unix):
- after successful bind + chmod, drop a `.bound` marker in the
  per-agent dir as a stable 'this agent has a unix socket here'
  signal. best-effort: a failed marker write logs at WARN but
  doesn't abort serve (the socket still binds fine; gateway just
  keeps using TCP for one more poll).

c0re side (agent_sockets):
- new READY_MARKER const + ready_marker_for(name) helper
- build_map filters by ready_marker_for(name).exists() — only agents
  whose harness has bound the socket appear in the JSON map
- new build_map_with<F> internal extracts the predicate so tests
  pass a controlled is_ready closure (no real fs access)
- new spawn_poll() background task: re-fires agent_sockets::write
  every 10s so the JSON catches up to fresh markers without
  needing a container-start hook. write() idempotency means
  steady-state cost is one stat per agent per tick.

10 tests: 6 prior + new build_map_filters_by_ready_predicate +
ready_marker_path_is_sibling_of_socket. existing tests adjusted to
call build_map_with(_, |_| true) since the default path now hits
the fs.

once this lands + #822 lands, atlas's gateway-side step 3 can drop
its eval-time `pathExists` fallback — c0re only publishes opted-in
agents, so the gateway can trust the JSON unconditionally.
This commit is contained in:
damocles 2026-05-31 16:15:04 +02:00 • committed by mara
commit 5e0cb5e0f5
3 changed files with 140 additions and 8 deletions
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15
hive-c0re/src/main.rs
View file

@ -12,9 +12,9 @@ use hive_sh4re::{HostRequest, HostResponse};
// explicit (any new daemon entry point reads off the next add).
use hive_c0re::coordinator::Coordinator;
use hive_c0re::{
auto_update, broker, client, crash_watch, dashboard, dashboard_events, events_vacuum, forge,
manager_server, matrix, migrate, rebuild_queue, reminder_scheduler, scheduled_prompts_worker,
server, stats_vacuum,
agent_sockets, auto_update, broker, client, crash_watch, dashboard, dashboard_events,
events_vacuum, forge, manager_server, matrix, migrate, rebuild_queue, reminder_scheduler,
scheduled_prompts_worker, server, stats_vacuum,
};
#[derive(Parser)]
@ -253,6 +253,15 @@ async fn cmd_serve(
// when a previously-running container goes away without an
// operator-initiated transient state.
crash_watch::spawn(coord.clone());
// Agent-sockets marker poll: re-fires `agent_sockets::write`
// every 10s so the JSON picks up newly-bound `.bound` markers
// (a sub-agent flipping `hyperhive.web.useUnixSocket = true`,
// rebuilding, then having its harness bind the socket) without
// needing an explicit hook on each container start. write() is
// idempotent so steady-state cost is one stat per agent per
// tick. closes atlas's #813 concern that agents in the JSON
// would 502 the gateway until they actually opt in.
agent_sockets::spawn_poll(coord.clone());
// Reminder scheduler: drains due reminders + handles
// file_path payload persistence. See reminder_scheduler.rs.
reminder_scheduler::spawn(coord.clone());