hyperhive/hive-c0re
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Filename Latest commit message Latest commit date
atlas e8e6998ac5 refactor(#2756): replace the DAG terminal hook with real tail nodes
The queue carried a per-DAG `HookKind` that fired an inline side effect
from outside the graph when a container rolled up terminal. mara asked
three times why this could not be an ordinary node; the answer in the
code was a doc-comment claiming a node could not work, and it was wrong.

`DepWhen::AfterAny` already existed with two live users, and a weak edge
is satisfied by a `Cancelled` dep, so a tail node runs on success,
failure and cancel alike. What was genuinely missing was smaller than a
hook: a node had no way to learn how the work it followed ended.

So: `Claim` now carries `deps: Vec<DepOutcome>`, snapshotted at claim
time from the graph the scheduler already holds (no `hive-jobq` change).
`Claim::deps_state()` / `deps_error()` roll that up, and two new kinds
consume it — `ResolveApproval { approval_id }` and `EmitRebuilt { agent }`.
Templates append one as a group-root with `AfterAny` edges onto the DAG's
other group roots; a root's state is its subtree's roll-up, so that
covers every node without fanning out to each of them.

Deleted: `HookKind`, `DagSpec.hook`, `NodeKind::Dag.hook`, `DagMeta.hook`,
`TerminalDag`, `terminal_dag()`, `terminal_summary()`, `dag_agents()`,
`dag_rollup()`, `fire_terminal_hook()`, `run_terminal_hook()`,
`emit_rebuilt()`. `complete_node` returns `()`.

Load-bearing details:

- `JobQueue::cancel` spares tail nodes instead of cancelling the whole
  subtree, and returns `bool`. Without this a cancelled approval DAG
  would dangle its approval forever — the hazard `tests.rs` already
  named. The spared tail's deps are `Cancelled`, which satisfies its weak
  edge, so the scheduler claims it and it resolves the row as cancelled.
  `hive-jobq` anticipated exactly this: `cancel_node`'s doc already says
  to settle afterwards so "a weak-edge terminal node observing the
  cancellation" can advance.
- The existing `complete(container)` call after cancelling is kept and is
  deliberately a no-op when a tail was spared (a non-terminal child parks
  the container back in `Finishing`), so power ops still settle
  synchronously with no branch.
- `DeployTail` is NOT `is_tail()`: it does real compensating work, and a
  cancelled DAG has nothing to compensate.
- `exec::failure_reason` falls back to `first_error(dag_id)` because a
  group root that rolled up `Failed` from a child carries no error of its
  own — without it every tail-reported failure would lose its reason.
- `EmitRebuilt` is per agent, so a multi-agent DAG reports each agent's
  own outcome rather than painting all of them with the DAG roll-up.
- `ResolveApproval` is agentless: the approval row already names its
  agent, and that is also what lets one tail close a multi-agent DAG.

Transients-derived-from-running-nodes and the frontend's node-kind
strings stay out of this change; they touch iris's slice and review
better next to their own diff.
2026-07-27 15:06:27 +02:00
..
src refactor(#2756): replace the DAG terminal hook with real tail nodes 2026-07-27 15:06:27 +02:00
Cargo.toml docs: declare readme = "README.md" for the last four crates 2026-07-27 09:35:06 +02:00
README.md docs: trim readmes down, stop restating impl detail the module docs already own 2026-07-26 21:01:00 +02:00

hive-c0re

The unprivileged host daemon (runs as hive-core). Owns the sqlite broker, the approval/question/schedule queues, the generic job-DAG queue, container lifecycle, gateway/forge/matrix provisioning, per-container stats, and the axum operator dashboard. Largest crate in the workspace — bin-only, no separate lib.

When to use it

Host-level, cross-container orchestration: spawning/rebuilding/ destroying agent containers, the approval flow, dashboard-visible state, provisioning per-agent forge/matrix/gateway accounts. Agent-side behavior (turn loop, MCP tools) lives in hive-agent/hive-agent-mcp instead — this daemon only talks to agents over the socket wire types in hive-sh4re.

Shape

Cohesive clusters live in directory submodules, each re-exported at the crate root (crate::broker::… keeps resolving regardless of which subdirectory a module actually lives in). One line each — read the module's own //! doc-comment for real detail, don't expect this file to track it:

  • dashboard/ — the operator dashboard (containers, approvals, schedules, questions, logs, topology).
  • job_queue/ — the job-DAG queue + desired-state reconciliation (docs/coordinator.md).
  • lifecycle/nixos-container lifecycle + per-agent config flake generation.
  • stores/ — sqlite-backed stores (broker, queues, audit, power).
  • workers/ — background sweeps (crash watch, scheduled prompts, auto-update, knowledge sync).
  • agent_config/ — per-agent registries (tool groups, capabilities, resource limits, topology).
  • stats/ — dashboard metrics aggregation + OTEL export.
  • socket_server/ — the unix-socket request server shared by per-agent + manager sockets.
  • forge/ — optional Forgejo wiring (docs/forge.md).
  • coordinator.rs — top-level wiring for serve.
  • meta.rs, migrate.rs — the meta flake + schema/state migrations.
  • matrix.rs, gateway_nginx.rs, webhook_secret.rs, priv_client.rs — matrix provisioning, gateway vhosts, webhook secrets, and the hive-priv client respectively.

See the top-level CLAUDE.md/docs/ index for the full reading-path map.