exec.rs's Reconcile arm was the one construction site declaring a
resource inline in an executor rather than in templates.rs. It now calls
templates::fanned_out_mechanical, which is where every other declaration
lives -- construction sites state their own holdings.
That also fixes a test which could not fail. The old one claimed a
Reconcile and then re-declared the fan-out itself, commented "same two
calls the scheduler makes, in the same order" -- a copy of production
inside the test. Had exec.rs stopped declaring the lease, it would have
kept passing. The replacement calls the real function and asserts the
declaration, with no DAG run at all.
The other half of the old test -- that a descendant re-enters its
ancestor's grant instead of taking a second unit of a cap-1 lease -- is
hive-jobq's, tested there by
child_borrows_ancestor_grant_released_when_subtree_done and
nested_borrowers_never_deadlock.
perm_change and the graceful rebuild chain walked their whole DAG to
collect node kinds in order; both now assert declared_shape. The
graceful one gets a sharper claim out of it -- signal and drain go
between the build and the stop, and nothing else changes -- which is
what distinguishes it from the non-graceful chain.
reparent_bulk needed the node's payload rather than its wiring, so
payload_of() reads it off the graph. The assertion is unchanged: one
node carries every move, because bulk atomicity is why a single node was
chosen.
resubmit_while_running_is_new_dag no longer claims a node to stage the
"while running" part. submit appends a container and inserts the
declared group; it never consults the state of any existing node, so a
running earlier DAG cannot change the outcome. The property is no dedup,
covered by identical_resubmit_is_a_distinct_dag -- this one keeps the
named scenario because a config bump mid-build is what people actually
worry about.
Two more tests drove DAGs to completion to watch an agent lease free up
-- one when a single agent's subgraph settled inside a still-running
multi-agent DAG, the other when a whole power op finished. Releasing a
grant once its owner's subtree is terminal is hive-jobq's, covered by
owner_holds_grant_for_its_whole_subtree,
child_borrows_ancestor_grant_released_when_subtree_done and
leaf_owner_goes_done_directly_and_releases.
Their host-side halves are declarations asserted elsewhere: that each
agent's subgraph is an independent root holding only its own lease is in
multi_agent_restart_is_one_dag_with_concurrent_per_agent_subgraphs, and
that a power op emits no tail node is in
cancelled_power_op_runs_no_compensating_node, which checks the DAG has
no pending nodes left at all.
Six tests drove two or three DAGs against each other to watch a build
slot or an agent lease serialize them. In every case the part that is
hive-c0re's -- which nodes declare which resource -- is now a
declared_resources table, and the part that is hive-jobq's -- what a
scheduler does with a contended unit -- is tested in hive-jobq
(build_slot_cap_limits_concurrency_and_release_unblocks,
unrelated_nodes_needing_the_same_resource_are_serialized, the two
sibling_borrowers cases, owner_holds_grant_for_its_whole_subtree, and
the fairness test added in the previous commit).
graceful_signal_and_drain_hold_no_build_slot is absorbed rather than
deleted: its claim is a declaration, so it now sits in the graceful-stop
shape test. Signal and Drain declare the agent lease and no build slot,
which is why a whole-hive graceful stop overlaps every agent's drain at
buildSlots = 1 -- the ceiling is one GRACEFUL_STOP_TIMEOUT in total, not
one per agent.
hive-c0re/src/job_queue/tests.rs: 42 tests to 36, 181 lines lighter.
fifo_fairness_for_the_slot lived in hive-c0re and submitted three
rebuilds, driving one to completion to watch the freed build slot go to
the earlier waiter. The guarantee it was checking is this crate's:
claim_one scans nodes in insertion order and takes the first satisfiable
one. Nothing here tested it -- the property hive-jobq provides was
asserted only downstream, through a host's templates.
a_contended_resource_goes_to_the_oldest_waiter tests it directly.
Mutation-checked: reversing the scan order fails it.
What is hive-c0re's is which nodes contend for the slot at all, and that
is a declaration, so its half is now a declared_resources table with
nothing running. The measured shape corrected an assumption on the way:
MetaSync takes the meta window only, and the agent lease starts at
StopForUpdate -- the first node that touches the container -- not at the
head of the chain. Prebuild deliberately holds no lease, which is what
lets it overlap another DAG on the same agent while the container is
still up.
"Uniform hold across the chain" needs no test of its own: a resource is
held for the acquirer's whole subtree, and the parent nesting is already
asserted in rebuild_chain_is_declared_serial.
swap_ok_runs_post_swap_before_reconcile drove a rebuild DAG to observe
that Reconcile waits for PostSwap. That ordering is not a dependency
between them: Reconcile deps AfterAny(Prebuild), and PostSwap sits
inside Prebuild's subtree, so Prebuild cannot satisfy the edge while
PostSwap is outstanding.
Renamed to say what it checks, and it asserts the parent chain plus that
edge instead of running anything. Kept as its own test rather than
folded into the chain table because the indirection is the easy thing to
break -- flattening the chain preserves every edge and still loses the
guarantee.
swap_failure_still_runs_reconcile is deleted. Its cascade claims are
hive-jobq's, and the "says so on the wire" half was nothing: snapshot
fills NodeView { state: node.state, .. }, a straight copy of the same
State type, so there is no host-side mapping that could disagree.
failed_reconcile_marks_dag_failed is deleted too: a one-node DAG whose
node fails, asserting the DAG reads Failed, is
failed_child_rolls_parent_up_to_failed restated through a c0re template.
Reproducing the runtime path is not needed to test what the runtime path
declares. What DeployApply grows is deploy_rebuild_nodes' output, and
that is a pure declaration -- so declare it directly and read the shape,
instead of running a deploy far enough to graft it.
That makes the finalize gate visible without any of the walking:
finalize_deploy declares AfterOk on both prebuild and reconcile, so
either root failing skips it, and reconcile hangs off prebuild with
AfterAny so a failed swap still reaches it.
deploy_dag_skips_finalize_but_still_tails_a_failed_graft is gone with
it. Its three declared claims are rows in that table, and its runtime
claims belong to hive-jobq: cascade on failure, roll-up, and first_error
digging past a group root that rolled up Failed while carrying no error
of its own -- which is why the DAG reports the swap's error rather than
nothing.
The grafting mechanism itself is also hive-jobq's and tested there: work
lands under the emitter before it settles, and the emitter parks in
Finishing so a downstream AfterAny gate stays shut while its new
children run.
deploy_dag_runs_phases_in_order_and_tails_a_failed_apply and
deploy_dag_skips_apply_but_still_runs_tail_when_verify_fails differed
only in where they injected the failure -- apply in one, verify in the
other -- and each drove the whole DAG to watch the compensation tail run
anyway.
Both follow from a single declared edge. The tail accepts
done|failed|skipped on apply, and skipped is exactly the state apply
lands in when verify failed and it never ran. Asserting that edge covers
both cases without running anything.
The runtime halves are hive-jobq's and tested there: a failed dep
cancels its AfterOk dependents while the AfterAny one still runs, and a
parent rolls up Failed from a failed child -- which is what stops an Ok
tail laundering a failed deploy into a success.
Mutation-checked: turning the tail's after_any(apply) into
after_ok(apply) fails the surviving test on that edge alone.
non_graceful_rebuild_has_no_signal_or_drain claimed and completed six
nodes to collect their kinds. Mutation-checked rather than trusted: with
the template's graceful flag flipped, it fails with signal and drain in
the list. An absence assertion is the easiest kind to make vacuous, so
it is the one that most needs the check.
reparent_shape claimed a node only to get an id for its resource
assertion. node_of() finds it by kind and asserts there is exactly one,
so the test cannot quietly start being about a different node.
multi_agent_restart asserted "both subgraphs start concurrently" by
claiming and seeing two. That is not one fact but two declared ones plus
a jobq guarantee: both heads are group roots with no deps, so nothing
orders them; and each declares only its own agent lease, so nothing
makes them contend. Whether a scheduler then runs independent,
resource-disjoint roots at once belongs to hive-jobq and is tested
there. This asserts the two declarations.
ErasedRecipe and erase() existed for one test, which put three power-op
cases in a single array. Three recipe closures have distinct types and
cannot share an array element type, so all three were boxed. The array
was the reason, not the specs.
The per-case assertion is now a helper taking the already-submitted DAG
id, so each case submits its own spec at its own concrete type. Nothing
is erased and nothing is boxed; production never needed either.
The final assertion is also stronger than the one it replaces.
claim_ready().is_empty() asks what is runnable at this instant, which a
node that is alive but blocked on a dependency passes -- exactly what a
leftover compensating node would look like. It now asserts the DAG has
no Pending nodes at all. It was also a mutating call inside an
assertion: claim_ready settles the graph.
Three template tests ran a whole DAG -- claim, complete, repeat -- to
observe an order that is fully determined the moment submit returns.
They now read the graph directly: kinds, parent nesting, and dep edges
with the outcome set each accepts.
rebuild_chain_claims_in_dep_order is renamed, because the old name was
wrong about the mechanism and reading it rather than the graph is how
you stay wrong: only half that chain is dep edges. stop_for_update and
swap declare no deps at all and are ordered by parent nesting -- a
node's sub-nodes run after its own logic. Both axes are asserted now,
since a template can break either independently.
declared_shape spells out each edge's accepted outcomes rather than
bucketing them into ok/any. Bucketing made spawn's three
ResolveApproval tails -- which differ only in accepted outcome -- render
as identical rows, which would have made the assertion a tautology.
Checked by mutation against the code under test rather than the
assertion: dropping .after_ok(signal) from the graceful-stop Drain fails
graceful_stop_shape with a diff naming the one missing edge.
error_is_truncated submitted a DAG, claimed its head, failed it with a
long string and read the error back out of a snapshot -- four moving
parts to observe one `&str -> String`. The DAG round-trip it depended on
is covered by its own tests either way.
Testing truncate_error directly also reaches the case the round-trip
never could: the cap is a byte length, so a multibyte char straddling it
would panic the slice. That boundary scan is the only non-obvious line
in the function and it had no coverage at all -- the old test used a
repeated ASCII 'x', where byte and char offsets coincide.
Also drops a stale claim from insert_job's doc: it has not recorded a
per-node node_rt since that map was deleted.
Two review findings from the previous round, re-checked against the
actual tree rather than against my notes.
`Scheduler::complete` was still a public wrapper whose entire body was
`self.finish(id, outcome)`. Its docstring argued the split was not a
redirect because both completion forms shared `finish` -- but sharing a
private helper is not a reason for two public names. `finish`'s body now
lives in `complete`, and `complete_growing` calls it. Same sharing, one
name, no redirect.
Growth on a failed node is now dropped by `complete_growing` instead of
by the host loop. Failure cancel-cascades to every pending child of the
completing node, and grown work is inserted as its children, so anything
appended here is Skipped by the next statement -- the insert is not
wrong, it is provably pointless. That is a consequence of this crate's
cascade rule, so this crate should be the one enforcing it; a host that
has to remember it can forget it. Behaviour is unchanged: hive-c0re
already dropped growth before calling, and now no longer has to.
`Scheduler::new_job` is left alone but documented for what it is: the
hole in `JobBuilder::new`'s pub(crate) wall, with no non-test caller
since claim_next mints a builder per running node. Closing it is a venue
question rather than a rename, so it stays for now.
c0re's run loop now goes through hive_jobq's claim_next seam, so the
host layer no longer needs its own claim/complete vocabulary.
exec::run_node takes (NodeId, &NodeKind) instead of a &Claim snapshot.
The agent already rides the payload, and the DAG id is a derived read
(JobQueue::dag_of) that only three arms want, so it is taken per-arm
rather than eagerly for every node. Two arms (WritePermFile, Reparent)
re-matched the kind behind a bail! that could never fire; the match arm
already destructures the payload, so they take it directly now.
Deleted from the c0re layer:
- struct Claim
- JobQueue::claim_ready
- JobQueue::complete_node / complete_node_growing
- scheduler::NodeDone / handle_completion
Completion happens inside the future claim_next hands back, so "ran the
node but forgot to complete it" is not expressible on the production
path any more. The node done / node failed logging moved with it -- it
lived in handle_completion but is not dead code.
claim_ready and the completion wrappers were left with no non-test
callers, so the tests carry them as ClaimReady / CompleteNode extension
traits over the crate primitives. JobQueue::new_job stays: run_worker
still mints an empty builder on a failed outcome.
`QueueInner` existed to hold the scheduler *and* a per-node side map. The
map is gone, so it was a struct around one field — and worse, a struct of
a type `hive_jobq` cannot drive: the crate's run-loop seam takes
`&Arc<Mutex<Scheduler<..>>>` specifically.
So `JobQueue` now holds `Arc<Mutex<Sched>>` directly, where `Sched` is
just `Scheduler<NodeKind, Resource>`. Its six methods become free
functions over `&Sched`; all six are `DagView` projections, i.e. the code
the endpoint rework is going to delete anyway, so this does not entrench
them.
This is the precondition for c0re calling `claim_next`, not that switch
itself — `run_worker` still claims through `claim_ready`. Landing it
separately keeps the type change reviewable on its own.
`QueueInner` was `{ sched, node_rt }`, where `node_rt` held exactly one
datum per node: the `build_logs` row id. It existed because a `hive_jobq`
node payload is immutable after insert while the log row is created when
the build starts — so the link could not ride the node.
Invert it: the log row names its node (`build_logs.node_id`, one migration
in the existing `schema_versions` framework). Same single-home property,
in the direction the type system allows.
`QueueInner` is now just the scheduler. That is the point: the queue holds
no per-node side map, so nothing has to be locked alongside the graph.
Deleted as a consequence, each surfaced by dead-code analysis after the
edit above rather than predicted:
- `NodeRuntime`, `node_rt`, `set_build_log_id`, and `build_log_id_of`
(which linear-scanned the map to match a wire `u64` against opaque
`NodeId`s). The lookup is an indexed query now.
- `struct Ctx`, entirely. It carried `coord` + `dag_id` + `node_id` into
the executors so the build-log callback could reach the queue; without
the callback, `coord`/`dag_id` were never read and `node_id` was already
on the `Claim` both executors receive.
- `QueueInner::node_running`, which existed only for `set_build_log_id`'s
"only while running" guard.
- The `Fn(i64)` callbacks on `prebuild_toplevel` / `swap_update` /
`priv_run_inner`, replaced by a `node_id: Option<u64>` passed down. The
id travels one way now instead of being registered back.
`meta.rs`'s `nix_logged` passes `None` deliberately: its callers reach it
from outside the queue as well as inside, and nothing reads the link for
them yet.
`id_for_node` takes `MAX(id)` rather than assuming uniqueness — a retried
node opens a second row and the panel wants the current attempt. The test
moved to where the behaviour lives and covers that, plus survival across
completion and non-collision with node-less rows.
A node no longer hands back a recipe for the scheduler to replay later. It
declares straight onto a builder it was given, and that builder is inserted
as part of completing the node.
Deleted: `pub type Declare`, `struct NodeOutput` (+ its hand-written `Debug`),
`JobQueue::append_subgraph`. Nothing added to `Dag` / `DagView`.
jobq gains `Scheduler::new_job()` (the only way to obtain a `JobBuilder`) and
`complete_growing(id, outcome, grown)`, which inserts under `id` and *then*
completes it, so a DAG cannot roll terminal while grown work is still pending.
`complete()` and `complete_growing()` share a private `finish()` rather than
one redirecting through the other. The DAG-gone guard lives beside the graph
now, where it cannot be skipped, instead of being a caller-side lookup.
The growth executors return data (`run_meta_lock -> (Vec<String>, RebuildOpts)`,
`run_reconcile -> Option<NodeKind>`) rather than taking the builder: a `&Job`
parameter is live for the whole function body, and `&RefCell<T>` is never
`Send`, so an async fn taking one cannot be spawned. `run_node` threads the
builder by value and hands it back.
A node can now declare work and then fail, which was previously inexpressible.
`grown` is dropped in that case — failure cancel-cascades downstream, so
inserting it would only add nodes to immediately cancel — and the log line
carries `grown_nodes` so the drop is visible.
Two review findings on the resources-at-construction change.
argus: `workers::auto_update`'s boot sweep constructs nodes through
`templates::node` too, and it was not converted. With the kind-derived
declaration gone, its sweep `MetaLock` and its per-agent `Reconcile`
silently declared no resources at all — so a boot reconcile no longer
held the agent lease and could race another DAG's container ops, and the
sweep's meta commit could land inside another node's staged deploy
window. Nothing failed to compile: removing an implicit behaviour from a
helper is invisible at every call site that relied on it.
The declarations now live in a pure `boot_nodes`, split out of
`submit_boot_tree` so they can be exercised without a `Coordinator`.
That path is the only place job nodes are built outside `job_queue/`,
which is exactly why it had no coverage; `boot_sweep_nodes_declare_
their_own_resources` closes that, asserting against declared graph edges
rather than against the kind.
mara: `templates::node` is a redundant redirect now that it no longer
derives resources — deleted, and its 43 call sites use `Job::node`
directly. The reasoning it documented moved to the module docs of
`templates.rs` and `resource.rs`, which is where it stays true.
Resources were derived from the node's kind: `templates::node` called
`NodeKind::resource_deps()`, which fanned out to `needs_build_slot` /
`needs_lease` / `needs_meta_window`. That made the requirement a property
of the *kind*, so a kind that happened to run under an ancestor already
holding the resource could get away with declaring nothing.
Three did. `Start`, `Stop` and `PostSwap` appear in none of the three
predicates, and that was only safe because one construction site fans
them out from inside a lease-holding `Reconcile` — a fact about today's
DAG shape, not about the nodes.
Each of the 41 construction sites now says what it holds. `Start` /
`Stop` / `PostSwap` declare the agent lease; per the contract that is a
re-entrant borrow, which a new test pins rather than argues.
`running_transients` reads the node's declared deps instead of
re-deriving from the kind. That closes the blank-pill gap: the pill went
blank during container start, stop and the post-swap tail because the
declaration was missing, not because the filter was wrong.
The deleted predicates carried the only written record of three design
decisions; each moved to the `Resource` variant it constrains rather than
dying with its function.
Three findings from the operator's review, all correct.
1. Two insert_job's. Graph::insert_job had no caller outside hive-jobq's
own tests -- production only ever went through Scheduler::insert_job.
It existed because the graph-level one got written first. Deleted; the
tests moved onto a Scheduler, which is where insertion belongs anyway.
2. insert_job was not atomic, and the previous commit made that worse: a
forward edge or forward parent surfaced mid-loop, leaving the nodes
before it in the graph, and resolve_wanted ran after every insert, so
an unknown handle failed once the whole job was already committed.
The module documented this under "Partial insertion" instead of fixing
it -- prose describing a hole is not a design.
All three are decidable from what the builder holds, so
check_declaration_order now runs before the first insert and the loop
indexes ids directly. A malformed job leaves the graph untouched.
What remains mid-insert is the graph's own rejection (out-of-group
dep, empty DepWhen); closing that needs a dry-run validate on Graph,
which is a separate change.
3. DagSpec no longer boxes its recipe: it is generic over the closure,
which travels from the template that built it straight into submit.
The box bought type inference, and paying for it costs annotations --
`|b: &Job|` at each declaration site (the field needs an HRTB, and an
unannotated closure binds one lifetime) and `+ use<>` on each
returning signature (or the opaque type captures the caller's borrows).
Erasure is still needed where several recipe shapes share one type:
the boxed Declare stays for the executor's append_subgraph, and a test
table uses an erase() helper.
The operator's instruction on the issue was "the closure returns an array
of guids, and enqueue_job returns the node ids in that order". What was
here instead returned a HashMap of everything inserted, and no caller used
the keys: submit dropped the return, insert_group did into_values(), and
the scheduler ignored what append_subgraph handed back. The guid-keyed
lookup was dead weight, and into_values() made that Vec arbitrarily
ordered -- harmless only because nothing read it.
insert_job now takes FnOnce(&JobBuilder) -> Vec<NodeGuid> and returns the
matching ids positionally. A handle from another job is UnknownNode rather
than a silent omission: the return is positional, so a short vector would
misalign every id after it.
c0re's Declare stays FnOnce(&Job) and the wrapper names no handles in one
place, rather than ending seven templates in an empty vector -- a DAG is
addressed by its container node, which submit inserts itself. That frees
insert_group from needing every id, so the node_rt pre-seeding goes too:
NodeRuntime is one Option field and every reader already tolerated a
missing entry (entry().or_default(), get().and_then(), iter().find()).
The tests are the argument for the shape: capturing a handle through a
mutable binding to look it up in the map afterwards collapses into
returning it and destructuring the result.
Follows the jobq change: a builder can no longer be constructed or
inserted outside `hive_jobq`, so `DagSpec` cannot hold one. It carries a
`Declare` — `Box<dyn FnOnce(&Job) + Send>` — and the queue runs it
against a builder jobq owns, at the moment it inserts.
`NodeOutput.append_subgraph` becomes `Vec<Declare>` for the same reason,
and this is where the shape was always heading: that field's doc already
said an executor "cannot reach the queue, so it hands the declaration
back", while its type was a `Vec<Job>` the executor had built itself.
The rejected `build_nodes -> Vec<NodeSpec>` was the first version of that
escape hatch; a recipe is the last one, because there is no job-shaped
value to hand over at all.
Templates and the power-op assemblers move their owned data into the
closure and are otherwise unchanged — `rebuild_nodes`, `node` and the
tail helpers already took `&Job` and returned handles, so only each
template's outermost frame moved.
Two `Debug` impls are hand-written: a closure has nothing to show, and
its nodes do not exist until the queue runs it. `NodeOutput` reports how
many subgraphs were emitted, `DagSpec` its source and reason.
`append_subgraph`'s `is_empty()` early-return is gone — you cannot ask a
recipe whether it will declare anything without running it. It now
inserts and returns an empty id list if nothing was declared, which
takes the queue lock in a case that previously skipped it.
The two in-DAG-growth tests build `Declare`s now, so they exercise the
shape an executor actually produces rather than one only a test could
construct. 45 job-queue tests unchanged and passing.
Every template built a `Vec<NodeSpec>` whose edges and parents were
positional indices into that vector, so a shape was expressed as
arithmetic: `base + 1`, `stop_root + 2`, `sfu + 1`, and a
`reconcile_index()` helper that read the emitted vector's length to find
out where its own last node had landed. `concat_subgraphs` existed
solely to rebase one per-agent subgraph's indices onto another's.
Templates now declare into a `hive_jobq::JobBuilder` and hold the
handles they get back, so an edge names the node it waits on. The
arithmetic is gone, and with it:
- `NodeSpec` and the job-queue's own index-based `Dep`.
- `insert_group`'s index resolution — it wraps `Scheduler::insert_job`.
- `concat_subgraphs` — per-agent chains share one builder and each keeps
its own root, so independence is structural rather than computed.
- `reconcile_index` and `dep_index`.
- `templates::validate` and its petgraph toposort. It rejected dangling
deps and cycles; both are now unrepresentable, since a handle only
exists for an already-declared node and every edge therefore points
backwards. (petgraph stays in the tree for `agent_config::topology`.)
`NodeOutput.append_subgraph` becomes `Vec<Job>`: an executor cannot
reach the queue, so it hands back declarations and the scheduler inserts
them under its own lock. That is what the in-DAG growth path always
wanted — a transferable declaration, not a vector of specs.
Resource declaration is unchanged in behaviour: the `templates::node`
helper applies `NodeKind::resource_deps()` at the construction site, so
every node still declares what its kind needs. Moving that declaration
to the call sites is #2818's job; this leaves it one place to delete.
Three tests went with the guard they covered — they hand-built malformed
specs out of indices, which is the representation that made those shapes
possible. Two more now read a DAG's shape off the queue rather than out
of a spec vector, which is where it is observable. The remaining 45
job-queue tests are unchanged and still pass: lease serialization,
roll-up, cancel-cascade, in-DAG growth and per-agent concurrency all
behave as before.
The dashboard pill was declared once per DAG at submit time, so a rebuild
reported `rebuilding` for its entire life — through the prebuild, the
stop, the swap, the tail and the reconcile. It named the intent of the
request, not what was happening.
It is now read off the nodes actually running. A node lights a pill when
it is `Running` and declares the agent's own resource. Declaring is the
test, not targeting: `Prebuild` and `MetaSync` name an agent but are
lease-exempt on purpose (the container keeps serving), so they must not
light one. It is also not the lease *owner* — `resource_state()` answers
"who holds the slot", which is a different question from "what is
running", and a descendant that borrows an ancestor's grant never
appears in that map.
`TransientKind` is gone entirely rather than being re-derived. The label
is the node's own wire tag (`NodeKind::as_str`) — the same vocabulary
`NodeView.kind` already ships, so a pill and a DAG node name an operation
identically and there is no second taxonomy to keep in step. Work with no
node behind it (destroy, migration) supplies its own literal.
`DagSpec::transient`, `Claim::transient`, `DagMeta::transient` and
`NodeKind::Dag`'s `transient` field all go with it.
## the safety half, which is deliberately not the display half
`crash_watch::is_deliberate_stop` used to match a `TransientKind` to
decide whether a vanished container was intentional or a crash. That made
a pill's display vocabulary decide an alerting question, so renaming or
adding a label would silently move the alerting boundary.
`TransientState` now carries two independent fields: `label` (rendered,
nothing branches on it) and `deliberate_stop` (read only by the crash
watcher). The producer sets the second, because the producer is the only
thing that knows — it is not recoverable from the first.
For queue work that value is `NodeKind::takes_container_down()`, and it
is emphatically not "holds a lease": `Create` and `Start` hold the
agent's lease exactly like `Stop` does, and a container dying *while
starting* is a real crash that must keep reporting as one. The default is
`false` on purpose — a wrong `false` costs a spurious crash event, a
wrong `true` swallows a real crash silently.
## known cost, accepted on the issue
A restart no longer reads `restarting`. No `NodeKind` is unique to a
restart — `restart_chain` reuses `Signal` / `StopForUpdate` / `Drain` /
`Reconcile` — because "restart" is a property of the DAG's shape, not of
any node. A restart now reads `signal` / `stop_for_update`, then the
agent returns.
`Start` / `Stop` / `PostSwap` run inside a lease-holding ancestor and
re-declare nothing, so they light no pill and the agent reads idle for
those windows. Closing that is the resources-where-constructed work
(#2818), not this change.
Checked with clippy (`--all-targets -D warnings`), `cargo test -p
hive-c0re -p hive-jobq` (321 + 40 passed) and `nix fmt`.
`JobQueue::cancel(dag_id)` resolved the id to a `NodeKind::Dag` container
and cancelled that. But the container lookup was the only DAG-specific
part — everything that makes cancel work already lives in the scheduler:
`cancel_node` marks the node `Cancelled` and cascades to its pending
descendants, sparing any node whose edge accepts `Cancelled` (which is
what keeps a dropped approval DAG from dangling its row).
So `cancel` now takes any node id. A group root cancels the whole group,
which is what the dashboard's button does today and why nothing about
its behaviour changes: a DAG id *is* its root node's id. An interior
node cancels just that branch — a capability the DAG-scoped version
could not express, covered by the new test (a hive-wide restart drops
one agent's subgraph while the other keeps running).
`QueueInner::node_by_id` replaces `container()` here: same search, same
cost, without asserting the node is a DAG container. `container()` stays
for `first_error` and the append-subgraph guard, which are genuinely
DAG-scoped.
No wire change. The route is `POST /api/rebuild-queue/{id}/cancel` with
a `u64` path param — same type, same route, and the client keeps sending
the same number. Only the param's documented meaning moves from "DAG id"
to "node id".
Checked with clippy (`--all-targets -D warnings`), `cargo test -p
hive-c0re` (322 passed) and `nix fmt`. No option surface touched, so no
nix-eval gate.
Second of the `Dag` field removals, and the same shape as the first:
`DagSpec`/`NodeKind::Dag` carried an `inputs: Vec<String>` that exactly
one node ever read. Both reads live inside `run_meta_lock` — the
`meta::lock_update` call and the `meta_update_cascade_agents` fan-out —
so the list now rides `NodeKind::MetaLock` itself.
The executor stops touching `Claim` for this node entirely: its dispatch
arm already destructured `MetaLock { sweep, fanout }`, so `inputs` joins
them and the `claim` parameter, which had no other use, is gone.
Falls out of that:
- `Claim::inputs` and `DagMeta::inputs` delete.
- `dag_view`'s DAG-level projection onto the `MetaLock` node reads the
payload instead. The wire `NodeView::inputs` is unchanged: still
populated on the `meta_lock` node alone.
- the boot sweep names no inputs (it bumps `hyperhive` alone via
`lock_update_hyperhive`), which the construction site now says out loud
rather than leaving implicit in an empty DAG-level field.
Checked with clippy (`--all-targets -D warnings`), `cargo test -p
hive-c0re` (320 passed) and `nix fmt`. No option surface is touched, so
no nix-eval gate.
`DagSpec`/`NodeKind::Dag` carried an `Option<i64>` approval id that four
deploy phases read back out through `Claim`, via a fallible helper whose
error ("approval deploy dag N has no approval_id") described a state the
type system should have forbidden. Two other templates (`spawn`,
`meta_update`) set the field for nothing: their approval is resolved by
the `ResolveApproval` tails, which already carry the id themselves.
So the id moves onto the nodes that actually need it —
`DeployWindow` / `MergeVerify` / `DeployApply` / `FinalizeDeploy` /
`DeployTail` each take an `i64`, the same way `ResolveApproval` always
has. `templates::approval_deploy` builds all of them in one place with
the value in hand, and `deploy_rebuild_nodes` takes it as a parameter so
the `FinalizeDeploy` it appends at runtime is constructed the same way.
Falls out of that:
- `deploy_approval_id` and its runtime error path delete; each executor
takes the id from its own node payload at dispatch.
- `run_deploy_window` had nothing left to do but validate that id, so the
node joins `Dag` on the shared no-op arm.
- `Claim::approval_id` and `DagMeta::approval_id` delete.
- `dag_view`'s DAG-level projection onto `DeployWindow` reads the payload
instead. The wire `NodeView::approval_id` is unchanged: still set on
the deploy root alone, so the dashboard still renders one approval link
per DAG rather than one per phase.
No option surface is touched, so there is no nix-eval gate here; checked
with clippy (`--all-targets -D warnings`), `cargo test -p hive-c0re`
(320 passed) and `nix fmt`.
`NodeId` has been globally unique across DAGs since #2801, so the dag id
carried no information the node id didn't. The parameter was already
underscore-prefixed as unused, but still populated by `claim_ready`, carried
through the scheduler's mpsc on every `Claim`, and passed at the call site —
three layers of plumbing feeding a dead argument.
Removing it surfaced four more dead things it had been keeping alive:
`settle_approval_tail`, `settle_rebuild_tail` and `drain_meta_syncs` each took
a dag id they only forwarded to `complete_node`, and one `submit` binding was
never read. Those are deleted rather than underscore-prefixed — prefixing is
what let the original argument survive this long.
`Claim.dag_id` stays: it has live consumers in the tracing spans,
`append_subgraph`'s container guard, `Ctx` for the build-log link,
`first_error`, and the approval-deploy context.
A node ruled out by its own dependency edges settles `Skipped` host-side,
but the wire folded it into `Cancelled` and `dag_view` filtered it out
entirely, so a client never saw which branch a run didn't take. Post-#2785
that is not a rare shape: every approval DAG has two not-taken tails and
every rebuild has one, on the happy path as much as on failure.
`State` gains `Skipped`, and it counts as terminal — the wait loops in
hivectl's progress display and the daemon's dag-settled check decide
"finished" with `all(is_terminal)`, so omitting it would hang them on
essentially every DAG.
`dag_view` now emits skipped nodes but no longer lets them keep a DAG
alive. Serialization and completion were the same expression: a DAG left
the snapshot because its nodes had all been filtered away. Keeping skipped
nodes on the wire under that rule would pin every finished deploy in the
queue view forever, so the completion test is now its own flag.
`rollupState` in the dashboard gains the matching arm. It has no `done`
case — `done` is inferred by falling off the wire — so its trailing
`return 'queued'` catches anything it doesn't recognise, and a green
deploy would have read as permanently queued the moment the backend
started emitting the new state. The Rust and JS roll-ups have silently
disagreed before; they are edited together here and say so.
A host restart brings hive-c0re up and the startup sweep rebuilds every
stale agent. Until now that stop was mechanical: `StopForUpdate` hung
straight off `Prebuild`, so an agent that was mid-turn when the host went
down had its turn cut off rather than finished.
The sweep now builds the same `Signal` -> `Drain` -> `StopForUpdate` chain
a graceful `hivectl restart` already uses, reusing the existing nodes and
`GRACEFUL_STOP_TIMEOUT` unchanged. Cost is bounded: the per-agent drains
overlap, so the sweep waits one timeout in total rather than one per agent.
`Signal` parents the rest of the stop instead of sitting beside it. All
three of `Signal` / `Drain` / `StopForUpdate` declare the agent lease, and
a resource is held across its holder's whole subtree — as siblings each
would take the lease separately, leaving a window between them for another
DAG to claim the agent mid-bounce.
Scope is the boot sweep alone: a manual rebuild, a meta-update cascade
child and a deploy all still stop mechanically, and a test pins that shape.
`rebuild_nodes` takes a `RebuildOpts` struct rather than a second
positional `bool`, which two adjacent flags would have made easy to swap at
a call site. Its callers no longer hard-code the subgraph's length either:
the `EmitRebuilt` tails and `FinalizeDeploy` used literal indices that
silently encoded "this builder emits exactly six nodes with `Reconcile`
last", which a variable-length subgraph turns into a wrong-node edge rather
than a compile error. They read the index off the emitted list now.
Review follow-ups on #2785.
`DepWhen` wraps `BitFlags<TerminalState>` instead of a hand-rolled `u8`,
so the bit manipulation belongs to the library and `TerminalState` gains
its flag value from `#[bitflags]` rather than a `bit()` match anyone
could get wrong. `of`/`accepts`/`is_empty` become one-liners over it.
Serialization is written out by hand rather than derived: clippy's
`unsafe_derive_deserialize` fires on deriving over a type with unsafe
internals, and the honest fix is to say what the wire form is. It is now
the list of accepted outcomes — `["done","failed"]` — which reads better
than a bitmask and survives the bits being renumbered.
Also drops the `pub use` re-export of `DepWhen` / `TerminalState` from
hive-c0re's `model`. It existed so that `use super::model::…` kept
compiling, which is a shim for one consumer's convenience; the sites
import from `hive_jobq` directly now.
And removes comments narrating what the code used to be. Git holds that.
Splits what was one `Cancelled` outcome into two, because they were two
different facts wearing one name:
- `Skipped` — the node's own edges ruled it out. Expected; the failure
branch of a run that succeeded is `Skipped`. A parent's roll-up
**ignores** it.
- `Cancelled` — the work was dropped before it could start. Still
not-success for the roll-up, as before.
Without that split, branching on outcome defeats itself: exactly one
branch is always ruled out, `any_child_failed` counted it, and every DAG
containing a branch would have rolled up failed no matter how the run
went. Caught in review before it was written, not after.
`AFTER_ANY` becomes `{Done, Failed, Skipped}` — "anything except the work
being dropped". That is what it always meant; it only swept in
cancellation because cancellation wasn't distinguishable from
elimination. Audited every user rather than assuming, which is how the
one regression in my own proposal surfaced: `{Done, Failed}` would have
refused to run rebuild's recovery `Reconcile` after a failed `MetaSync`
(that eliminates `Prebuild`, so the tail's dep is `Skipped`, not
`Failed`) and left the container down.
With that, the templates stop computing outcomes and let the graph pick:
- `ResolveApproval { approval_id, outcome }` — one tail per outcome, each
edged to accept only its own, so exactly one is ever runnable.
- `EmitRebuilt { agent, ok }` — a pair. `ok` is not derived, it is which
of the two the graph let run.
Edges are conjunctive, so "any of these roots failed" is not directly
sayable. The composition: the success branch is `AFTER_OK` on every root
(so it is itself eliminated the moment one doesn't succeed), and the
failure branch keys off *that* elimination. The failure branch also
waits on every root — without it, a failed `Prebuild` eliminates the
success branch immediately and the failure would be announced while the
recovery `Reconcile` was still running. The tests caught that one.
Deletes, all of them #2770's host-side debt:
- `Claim.deps`, `DepOutcome`, `Claim::deps_state`, `Claim::deps_error`
and the dep-snapshotting loop in `claim_ready`. Executors read their
own variant now; nothing inspects anything.
- `NodeKind::is_tail()` and the `cancel` exemption built on it. Sparing
is derived from the edges: `cancel` keeps a node iff one of its edges
accepts `Cancelled`. An approval tail names it and survives to resolve
the row; `Reconcile` doesn't and is cancelled with the rest. My earlier
claim that this couldn't dissolve was only true while `AFTER_ANY`
accepted cancellation.
`resolve_approval_dag` / `deploy_terminal_tag` now take `TerminalState`
rather than the wire `State`, so both matches are exhaustive instead of
ending in a catch-all.
Skipped nodes are filtered off the wire alongside `Done` ones. That costs
some dashboard detail on a failed rebuild — which steps were skipped —
and the tests say so with a pointer to the follow-up. Surfacing them as
`Cancelled` instead would be worse: the client roll-up ranks `Cancelled`
above `Running`, so a successful DAG with a not-taken branch would read
as cancelled.
`DepWhen` was two named cases, so every new combination wanted a new
variant. It is now a set over the terminal outcomes: a `u8` bitset
newtype, no dependency, with `AFTER_OK` / `AFTER_ANY` kept as the two
constants the templates actually use. "Run regardless" is all outcomes,
"anything that isn't a failure" is `{Done, Cancelled}`, a compensation
branch is `{Failed}` — closed under combination, so it never needs
another variant.
`TerminalState` is its own type rather than a subset of `State`, so an
edge cannot name `Pending` / `Running` / `Finishing`. Those are
meaningless in a dependency and are better unrepresentable than
validated against. The empty set is the one thing that can't be typed
away — nothing satisfies it, so `validate` rejects it next to the cycle
check.
Two consequences worth calling out:
- `cascade_cancel` collapses to one rule: a pending node is doomed once
any edge it names can no longer be satisfied. The hardcoded `AfterOk`
special case is gone, and a weak-edged node survives its dependency's
cancellation because of its own edge rather than by exemption.
- The cascade now runs on **any** terminal outcome, `Done` included.
With sets, success rules dependents out just as failure does — a
`{Failed}` branch is unsatisfiable the moment its dependency succeeds,
and leaving it `Pending` would wedge the subtree non-terminal forever.
That is a hang, not a wrong answer, so it is the load-bearing half of
this commit.
Edges are conjunctive, so "any of these N failed" is not directly
sayable. The composition that works is in the tests: the success branch
depends `AFTER_OK` on every root, so it is itself cancelled the moment
one of them doesn't succeed, and the failure branch hangs off *that*
with `{Cancelled}`. Exactly one of the two runs.
Also deletes hive-c0re's duplicate `DepWhen` enum and the
`to_crate_when` translation beside it. The copy bought nothing and had
to be widened in lockstep with the crate's edge model — it is the
in-between layer #2772 exists to remove, and it is what broke the build
when the crate's spelling changed.
All 34 jobq tests pass, including the four new ones covering both
directions of a failure-only branch, weak-edge survival of a cancelled
dependency, and the aggregator composition.
Review catch from argus on #2770: with the terminal hook gone, cancel
spares the DAG's tail node so it can report the cancellation — which
leaves that node `Pending` until the scheduler's next pass.
`post_rebuild_queue_cancel` emits its snapshot synchronously, and
`rollup_state` ranked `Queued` above `Cancelled`, so the operator who
just cancelled a DAG saw it go back to **Queued**: "the cancel didn't
take". Asserted in `cancel_clears_queued_dag`, which failed before this.
Fixing it surfaced an older disagreement. `builds.js::rollupState` has
always been `failed > cancelled > running > queued`; the Rust was
`failed > running > queued > cancelled`. The two had silently diverged
under a doc-comment claiming they agree. Harmless until now only because
cancelled nodes never coexisted with live ones — a spared tail running
over cancelled work would have rendered `Running` host-side and
`Cancelled` in the dashboard.
The JS was the correct side, so the Rust moves to match it exactly:
`Failed > Cancelled > Running > Queued > Done`. No frontend change.
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.
`Template` was a DAG-level enum that three different things read back
out: `terminal_hook()` mapped it to a side effect, the retention pass
bucketed history by it, and a tracing field printed it. None of those
needed a *label* — they needed the two facts the label happened to
encode. So the enum was a lossy stand-in for intent, and every new DAG
shape had to pick the variant whose inferred behaviour matched, whether
or not the name fit (`reparent` rode `MetaUpdate` for exactly this
reason, with a 10-line comment apologising for it).
Replace the inference with a declaration: `DagSpec.hook:
Option<HookKind>`. Only the builder assembling a DAG knows why it did
so, so only the builder can say what should happen when it settles.
`run_terminal_hook` becomes a field read, and `reparent`'s apology
becomes `hook: None`.
Hook assignment is byte-identical to the old precedence rule
(`approval_id.is_some()` wins, then `Rebuild | PermChange`), checked
site by site; `meta_update` is the only builder with a variable
approval id and so the only remaining conditional.
Retention loses the per-template bucket with the enum that keyed it.
The dashboard renders one recent-builds list, so one flat newest-first
cap (`MAX_HISTORY_DAGS`) bounds it. `HISTORY_GRACE_SECS` goes too — it
existed to stop a burst of same-template DAGs evicting each other
inside one poll interval, which is not a failure mode a flat cap has.
That takes `snapshot_capped()` and the `snapshot_no_grace()` test hook
with it.
The queue is runtime-only (empty graph on boot), so the serde changes
carry no migration risk.
The revert hook is dead by construction, so it can only ever be wrong.
DAG state `Cancelled` has exactly one producer: `JobQueue::cancel`, which
refuses unless every work node is still `Pending`. A cancel *cascade*
(some node failed, downstream cancelled) rolls up `Failed` instead —
`dag_rollup` short-circuits on any failed subtree node. So on a DAG that
reaches `Cancelled`, no node ever executed: the `SetWanted` head provably
never ran and `wanted` still reads whatever the operator last set it to.
There is therefore nothing to revert, and `revert_intent` did not revert
anything — it wrote `Wanted::from_running(observed)`, i.e. the agent's
*observed* state, over an intent the DAG never touched. Harmless when
observed already matched, silent corruption otherwise: cancel a queued
start for an agent that is down but `wanted = Up` (crashed, or caught
mid-bounce) and the intent flips to `Offline`, leaving it
deliberately-stopped as far as reconcile and crash-watch are concerned.
The hook made sense when `set_wanted` was a pre-submit side effect
written before the DAG ran; moving it into the DAG as a node left the
hook vestigial.
Drop `HookKind::RevertIntent`, `revert_intent`, and the power-op arm of
`terminal_hook` — start / stop / graceful-stop now settle with no
terminal hook, same as restart always did. The test asserts the general
statement across restart/stop/start x graceful x running: stop and start
carry a `SetWanted` head, and cancelling them still fires no hook.
`terminal_hook` mapped `Restart` / `GracefulRestart` to `RevertIntent`, but
a restart never writes `wanted` — `restart_chain` deliberately has no
`SetWanted` head, so the tail `Reconcile` converges to the agent's existing
intent and a deliberately-stopped agent isn't forced up by a hive-wide
restart.
`revert_intent` writes `Wanted::from_running(observed)` unconditionally on a
cancelled DAG. So for an agent that is `wanted = Up` but currently down
(crashed, or caught behind another queued op), submitting a restart and then
cancelling it writes `wanted = Offline` — reverting an intent the DAG never
touched, to a value nobody asked for. Reconcile and crash-watch both then
read the agent as deliberately-stopped and leave it down.
It's invisible for a running agent, since `from_running(true)` equals the
intent already on file, which is why it went unnoticed. `cancel` only
succeeds while every node is still `Pending`, so the reachable window is
exactly "queued restart + observed != intent" — precisely when someone
restarts and then thinks better of it.
Drop both restart templates from the `RevertIntent` arm; they fall through
to no terminal hook, which is correct for a DAG that writes no intent.
Document the invariant on `HookKind::RevertIntent` and on `revert_intent`
itself: the hook writes *observed* state, so dispatching it for a template
with no `SetWanted` head doesn't restore an intent, it invents one.
Test covers all four restart shapes (graceful x running), asserting both
that the spec carries no `SetWanted` and that a cancelled restart dispatches
no hook, with a contrast arm pinning stop's revert in place.
Fixeshyperhive/hyperhive#2710
The `step` label was taken off the wire in #2661, when each deploy phase
became a first-class DAG node. Since then it has been written but never
read: `NodeRuntime` derives only `Debug, Default, Clone` — no serde — so
the field could not reach any client, and the only reads of it were the
dedup checks inside its own setters. This deletes the machinery.
Removed:
- `NodeRuntime.step`, `set_step`, `set_step_running`, and the
`rt.step = None` clear in `complete_node`. `NodeRuntime` keeps its
remaining `build_log_id` field (deliberately still a struct — collapsing
it to a bare `Option<i64>` would churn every call site for no gain).
- `Ctx::step` and its ~15 call sites in `job_queue/exec.rs`. `Ctx` itself
stays: it is the build-log sink, which `run_prebuild` and `run_swap`
still use.
- `Coordinator::set_queue_step` and its 11 callers in `actions.rs`.
- `JobQueue::running_node_of`, reachable only from `set_queue_step`.
- `swap_update`'s `on_step` parameter and its one body call.
- The `set_step_only_on_running_and_signals_change` test.
Dropping the calls orphaned parameters, which are removed with their call
sites: `ctx` on ten executors that used it only as a step sink, and
`queue_entry_id` on `run_deploy_merge_verify` / `run_deploy_apply` /
`run_finalize_deploy` plus both `coord` and `queue_entry_id` on
`prepare_applied_target`. `run_deploy_tail` KEEPS its `queue_entry_id` —
that one has a genuine surviving use (the build-log link in the failure
comment posted to the PR).
One behavioural change, called out so it is not mistaken for a dropped
dashboard refresh: `Ctx::step` and `set_queue_step` each emitted a
`rebuild_queue_changed` snapshot when the label changed, and those
emissions go away with them. This is safe — the snapshot payload has no
step field, so those pushes carried nothing a client could observe. Real
state transitions still emit from the scheduler's claim and completion
paths, from `submit`, and from the three `actions.rs` sites. Net effect is
strictly fewer redundant SSE pushes.
Docs: `docs/coordinator.md` still listed `step` as a `NodeView` wire field
and `docs/web-ui/dashboard.md` documented a cyan `↳ <step>` sub-line under
each queue row. Neither has existed since #2661 — both corrected here, plus
the `job_queue/model.rs` module doc.
Not touched: `frontend/packages/dashboard/src/system-sections.css` has a
dead `.rqe-step` rule with no JS referencing it. Left for the frontend
owner rather than deleted here.
Closes: #2664
The config-PR deploy's apply node still did the whole container rebuild
inline, through the last surviving `lifecycle::rebuild_no_meta` call. It
now merges, opens the two-phase meta deploy, and returns the ordinary
rebuild chain as a subgraph the scheduler grafts into the live DAG under
it. A new `FinalizeDeploy` node, gated on that graft, plants the deploy
tag and commits the staged lock.
Net effect: "did the agent come back up?" is answered by `Reconcile`
succeeding, the same way it is for every other rebuild, instead of by a
fused inline start — and each deploy phase is its own queue node, so the
dashboard shows which one is running.
The grafted nodes root on the apply node, so they land inside
`DeployWindow`'s subtree and re-enter the meta window and build slot it
already holds rather than deadlocking against them. The new happy-path
test runs on a one-slot queue specifically to pin that down.
`FinalizeDeploy`'s two git writes are fatal, deliberately: they are what
tells `DeployTail` a deploy confirmed good, so a node that merely warned
on them could report success while leaving the tail looking at the git
state of a failure — and the tail would then roll a good deploy back.
The trailing `meta::finalize_deploy` stays warn-only, since by then the
container already runs the new config.
The `failed/<id>` annotated tag moves into the tail, which is now the
only place holding a failed deploy. It reads the reason off the DAG via
a new `JobQueue::first_error`, and is gated on `main` having actually
moved — the rollback ref is parked *before* the merge, so its existence
alone does not mean a merge happened, and a pre-merge rejection must not
tag the previous, innocent head.
Removing the last inline rebuild orphaned a chain of now-dead code:
`rebuild_no_meta`, `container_exists`, `Coordinator::set_queue_build_log`
and `JobQueue::set_build_log_id_running`, all deleted here.
Two cases, both pinning the load-bearing property that the tail is
reached on every path: a failed apply (AfterAny dep is terminal) and a
failed verify (apply is cancel-cascaded, tail still claimable). Both
assert the DAG rolls up to Failed — an Ok tail must not launder a failed
deploy into a success.
The two-phase approval deploy keeps a bumped `flake.lock` staged
uncommitted for the whole container build, so no other meta mutation may
land inside that span — until now enforced by a process-global
`meta::exclusive()` mutex held inside each executor fn.
A `MutexGuard` cannot outlive the fn that takes it, which is what blocks
decomposing the opaque `ApprovalDeploy` node into scheduler-visible
sub-nodes: the window has to span them. Replace the mutex with
`Resource::MetaWindow`, a global capacity-1 queue resource declared by
every meta-mutating node kind (`NodeKind::needs_meta_window`). Resources
are held by a subtree root across its whole subtree, so a later increment
can hang the deploy's phases under one window-holding parent.
Same global serialisation as before, and the scheduler now blocks a node
from being claimed rather than parking a worker on a mutex.
Split the rebuild's meta preamble out of `Prebuild` into a new `MetaSync`
node. `Prebuild` must NOT hold the window: the old mutex was deliberately
scoped to drop before the multi-minute toplevel build, which only reads
the store, and a cap-1 global held across it would serialise every
agent's rebuild behind every other's. `MetaSync` is a sibling root that
`Prebuild` deps `AfterOk` on — not its parent, since a parent's resource
covers its whole subtree and would reintroduce exactly that problem.
Queue tests: shape assertions gain the extra node, which is the point of
the change (phases become nodes). The concurrency invariants are intact
but observed one step later — the `MetaSync` heads take turns on the
window, exactly as the runtime mutex made them, so those tests now
complete the heads before asserting that the prebuilds overlap.
Two tests asserted the old behaviour where completed nodes/DAGs stayed
in the snapshot. Under the redesign, Done nodes are filtered off the wire
(a fully-Done DAG disappears; a Failed one lingers + is history-capped):
- failed_node test: the completed reconcile is Done → assert it's absent,
not Done-present (its run is already verified by the claim).
- history-eviction test: fail the nodes so the DAGs linger (Done ones
would vanish), then assert the grace window + per-template cap.
The raw-graph wire drops the inline build_log_id; the client fetches a
node's captured output on demand. Two handlers resolve node id -> log-row
id (JobQueue::build_log_id_of, now keyed by the wire u64) then delegate to
the existing get_full / raw handlers: /api/build-log/<node_id> serves the
BuildLogFull JSON ({stdout, stderr} + header), /raw serves text/plain.
404 when the node has no linked log.
- server::await_dags: a DAG is settled when gone from the snapshot (fully
Done) or present with all nodes terminal; pending only with a non-terminal
node (DagView no longer carries a rolled-up state).
- DagView::rollup_state() added to hive-sh4re — the shared node-set roll-up
derivation every Rust consumer uses.
- JobQueue::build_log_id_of(node_id) — the node_id -> build_logs lookup the
query endpoint will use; tests assert log-id via it now.
- tests: derive roll-up state; drop the off-wire step/build_log_id wire asserts.
