The first live run on the local ax cluster and ax's source (docs/runner.md,
docs/sandbox.md, internal/controller/reconciler.go, internal/server/server.go)
showed a lifecycle the task-3/4 code did not model:
- `ax apply` creates a Task Suspended (Ready=False, TaskSuspended); it runs only
after `ax resume task`. The first resume of a new image can fail with
DeadlineExceeded while Agent Substrate builds the golden snapshot, and ax's
server then stores phase Failed; a later resume succeeds.
- ax has no Completed phase and never reads a command's exit back.
- The runner is PID 1 and must keep serving after the command exits; stop and
suspend deliver SIGTERM, to be forwarded to the command's process group.
Our runner imported the task in-process and exited, which stopped the
container ("Container guest is stopped") and made every resume time out.
- ax's controller probes /readyz?check=workspace; the query string made our
handler answer 404.
Runner (Req 4.1-4.4): spec.command runs as a child
`python -m openultrasast.plane.tasks.<name>` in its own process group, cwd the
first workspace, AX_METADATA_URL set; ax's metadata paths are served. After the
child exits the runner reads summary.json (a crash without one becomes failed
with the exit code and stderr tail), delivers the output directory, writes
/workspace/.ousast-state/<task>.done.json and serves until SIGTERM (forwarded
to the group, SIGKILL after OUSAST_TERM_GRACE, exit 0). A boot with the marker
never reruns the command; a failed delivery is retried alone. Workspaces are
prepared on the first boot only. AX_RUNNER_EXIT_AFTER_COMMAND=1 is the
unit-test escape.
Reconciler (Req 2.2, 2.3, 3.1-3.3): `ax resume task` after apply, retrying
DeadlineExceeded/Unavailable with backoff up to OUSAST_RESUME_TIMEOUT (900 s);
completion is the artifact delivery; Failed after a resume went through, a
vanished task, or no delivery within OUSAST_TASK_TIMEOUT (7200 s) fail the
task with ax's condition message; `ax delete task` follows. Ax gains resume()
and phase() returns the condition message. doctor moves to plane/doctor.py
(tasks.md task 0 allows the sibling) to keep reconciler.py under 500 lines.
Tests: the fake ax follows the real lifecycle (Suspended, a failing first
resume that leaves Failed, Running forever, delivery only after a resume went
through), plus Failed-with-message, vanish, resume-timeout and task-timeout
scenarios; runner tests cover the child's cwd/group/metadata URL, stay-up and
SIGTERM in a real subprocess, SIGKILL of a SIGTERM-ignoring group, and the
marker. The opt-in live test now checks resume, Running, suspend and a second
resume instead of a Completed phase. design.md and tasks.md state the
lifecycle; the module audit manifest counts plane.doctor.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01EmM1j46qgKMh3zqD1QMwEo
Requirements 3.1, 3.2, 3.3, 3.4, 3.5, 2.2, 7.1, 7.3 of ai-service-plane.
- plane/reconciler.py (492 lines, test-counted): a Run's tasks submitted to ax
in dependency order through the injectable `ax` CLI (apply / get task /
delete task), serialize labels never overlapping, --workers, state.json with
pending|running|suspended|done|failed|unfinished, a PID lock per run, done
tasks skipped on rerun, unfinished tasks holding their dependants, a failed
task halting the run. Budgets, inputs, output dir, artifact URL and the bound
Model (annotation openultrasast.io/model; identity and priced parameters) go
to the task as env in the rendered Task; consumed artifacts travel as files
of a generated Workspace bound under /workspace. A threaded HTTP receiver
takes each task's tar delivery, validating run/task and rejecting traversal.
Outcome comes from the delivered summary.json (done only when every unit
finished), never from ax's phase alone. status prints the token attribution
table per task and Model from the summaries' usage fields (n/a, never an
estimate) and writes attribution.json; doctor runs the four host checks.
- plane/workspaces.py: one Workspace manifest per case pin of a population.
- CLI: ousast plane run|status|doctor|workspaces.
- tests/test_plane_reconciler.py: a fake ax executable drives the DAG;
tests/test_plane_ax_live.py (marker ax) applies ops/ax/smoke-task.yaml on a
live cluster and skips unless doctor passes.
- Module audit rows and regenerated manifest.
Co-Authored-By: Claude Fable 5.1 <[email protected]>
Claude-Session: https://claude.ai/code/session_01EmM1j46qgKMh3zqD1QMwEo
