Problem: signal lifecycle (upsert, resolve, health aggregation) and
observe-pass orchestration (load checks, resolve targets, run probes,
aggregate health) were embedded in scheduler/scheduler.go — 1095 lines
of monolith with no port abstraction.
Change:
- app/signals.go: SignalService — ProcessCheckResult evaluates probe
outcomes (upserts signals on critical/warning, resolves on ok),
records metrics, computes health changes (ok/degraded/down/stale).
WorstHealthForTarget aggregates open signals into entity health.
- app/observation.go: ObservationService — RunPass loads enabled
checks via CheckRepository, resolves targets via TargetResolver,
dispatches probes through CheckerLookup (probes.Registry) with
bounded concurrency (default 10), sends results through SignalService.
- adapters/postgres/signals.go: MetricsRepo (InsertSamples via
sqlcgen InsertMetricSample), SignalRepo (Open/UpsertWithTriggers/
Transition with inline SQL matching the scheduler's patterns).
Verification: go build/vet, full test suite (18 pkgs green), DB
integration (postgres + mcp — green).
Problem: relationship create/end existed as three drifted copies
(HTTP CreateRelationship/EndRelationship, MCP create_relationship/
end_relationship) with inline SQL, no ontology edge validation on
either path, and no audit on the MCP path.
Change:
- Internal/adapters/postgres/repositories.go: RelRepo implements
ports.RelationshipRepository (Create/End/ListFor) over the pool,
with in-tx upsert + audit/event side effects on Create.
- Internal/core/app/relationships.go: RelationshipService validates
edges against the cached ontology TypeTree (tree.ValidateEdge) and
delegates the tx to the repository. The adapter resolves slug→entity
and extracts types before calling the service.
- HTTP CreateRelationship: resolves source/target via ReadModels,
passes resolved types to RelationshipService for edge validation.
EndRelationship calls the service directly (audit stays in the
adapter for End — a simple toggle with no ontology check).
- MCP create_relationship/end_relationship: rewired to the service
(pool resolves entity IDs inline for the tool handlers; the service
validates edges and writes audit). The MCP path now gets ontology
validation and audit coverage for the first time.
- Composition root: RelationshipService built with RelRepo + Ontology
and wired through httpapi.NewHandler, ListenAndServe, and MCP
constructors.
Verification: go build/vet, full test suite (19 pkgs, DB integration
postgres+mcp green).
Problem: entity/relationship/graph/blast-radius reads were embedded
as inline SQL in the httpapi handlers, duplicating the recursive type
tree CTE, the blast_radius function call, and the topology-picking
query across the REST and MCP surfaces with no port abstraction.
Change:
- ports.ReadModels interface: ListEntities, GetEntity, GetEntityBySlug,
GetEntityRelations, GetBlastRadius, GetGraph (with health),
ListEntityTypes. Returns EntityWithHealth (domain.Entity + health
from entity_status join) and domain.Relationship — no gen types
in the port.
- adapters/postgres/readmodels.go: EntityReader implements ReadModels
with the existing SQL verbatim (recursive type filter, blast_radius,
most-connected-first topology, graph edge listing).
- httpapi/entities.go: ListEntities, GetEntity, GetEntityRelations,
GetBlastRadius, GetGraph rewired to ReadModels. SQL moved to the
adapter; handlers map domain/ports types to gen wire shapes.
entityWithHealthToGen, sqlcEntityToGen helpers added.
- Old sqlcEntityToGen (sqlcgen.Entity → gen.Entity) preserved for
client_lifecycle.go; mutation handlers use domainToGen.
Verification: go build/vet, full test suite (19 pkgs), DB integration
(postgres + mcp — both green). httpapi DB tests have the pre-existing
set of failures (TestAPIEndToEnd entity_types=60/501, TestPhase3*)
verified at ec11956.
Problem: entity mutations (create/update/state) existed as three drifted
copies — HTTP CreateEntity/PatchEntity, MCP create_entity/
update_entity_attributes/set_entity_state — each with its own inline
SQL, its own validation subset (MCP validated lifecycle states, HTTP
did not; HTTP patched attributes without regenerating derived checks,
MCP did; MCP wrote no audit trail), the exact drift ADR 0016's first
vertical slice exists to collapse.
Change:
- internal/core/ports: DerivedCheck, Idempotency (adapter-owned request
hash + cached-body renderer so the replay record commits in the
create's transaction), IdempotentResponse + GetIdempotent read,
AuditEntry gains Method/Path/CorrelationID, Event gains
CorrelationID; EntityUpdateInput carries ExpectedVersion +
RederiveChecks (derivation for updates runs repo-side: the graph
host fallback reads relationships through the open tx).
- internal/adapters/postgres/repositories.go: EntityRepo (Create/
Update/SetState/reads/idempotency) preserving the load-bearing
check-then-act invariants in-tx: version WHERE-clause, declared
transitions + preconditions (ValidateTransition), duplicate-slug
mapping, audit/event/writeCheck all inside one BEGIN…COMMIT.
OntologyRepo: TTL-cached OntologyStore.
- internal/core/app/entities.go: EntityService — ontology validation
(type exists, concrete, state declared — the stricter MCP rule now
governs both surfaces), default-state resolution, id generation,
derivation for creates, audit/event construction, idempotency
pass-through.
- httpapi CreateEntity/PatchEntity rewired to the service; PATCH now
regenerates derived checks (the A2 parity gap). MCP create/update/
set-state tools call the same service — and now write audit + event
rows like the HTTP surface always did.
- Integration-test seed paths fixed for the adapters/postgres package
depth (../../../seeds).
Pre-existing failures documented: TestAPIEndToEnd (entity_types 60 vs
59; 501-endpoint now 200), TestClientLifecycleEndToEnd, TestPhase3*
rows — verified failing identically at ec11956 (scratch approval-
notifier commit test drift), unrelated to this change. All mutation
integration tests (create/patch/idempotency/audit/regeneration) pass.
Verification: make test-db (postgres + mcp green, httpapi green except
the pre-existing set), full non-DB suite (19 pkgs), golangci on new
packages — 0 issues.
Problem: check derivation logic lived in internal/checkdefaults with
the pure decision logic (buildKind, address/user/port resolution)
interleaved with tx I/O (entity_status insert, graph host fallback,
check upserts) — and internal/db importing it was the plan's called-out
inverted dependency.
Change:
- internal/core/app/checkdefaults.go: Derive(tree, target, lookup) —
the full derivation (monitoring overrides, host fallback via an
injected HostLookup thunk, per-kind builders) with zero I/O imports.
Types renamed for the app surface: CheckTarget, CheckDef,
DeriveResult, Skip; LogDeriveResult.
- internal/adapters/postgres/checks.go absorbs the I/O half:
EnsureChecks (entity_status row + upsert loop), writeCheck, and
hostViaGraph. The db→checkdefaults edge is gone — adapters→core is
the ADR 0016 direction (the Phase 7 SeedService note anticipated
this; the inversion is fixed a phase early).
- seed.go pending-checks loop uses app.CheckTarget + EnsureChecks;
mcp formatting/tests follow the renamed types; both test files moved
to internal/core/app.
- Deliberate behavior note: a hostViaGraph read failure inside the
thunk now logs a warning and degrades to 'skipped: no address'
instead of aborting the whole entity-create tx — a monitoring
derivation gap is visible (warn log + coverage sweep) and self-heals
on the next mutation; failing the create over a graph-read blip was
disproportionate.
Verification: go build/vet, full test suite green (app tests exercise
every buildKind branch at their new home).
Problem: the hexagon's Phase 2 (plans/2026-08-15-hexagonal-architecture.md)
must give the use-cases-to-be their contract surface: driven-port
interfaces, test fakes, the secrets interface moved into core, and the
postgres package inside the adapters tree — before the first vertical
slice (Phase 3) can wire a composition root.
Change:
- internal/core/ports: full driven-port catalog per plan §3.3 —
repositories as transaction-scoped aggregates whose inputs carry
derived checks, audit, and events (§3.6), plus CommandExecutor,
TargetResolver, Checker, Secrets, EventPublisher, Provisioner.
Port-local payload types (Event, AuditEntry, CheckDef, KnowledgeEntry,
ExecResult) keep signatures off infrastructure; TypeTree aliases
internal/ontology (pure over domain) until checkdefaults is absorbed.
ReadModels intentionally not declared yet — it materializes with the
Phase 3 slice and grows as report handlers rewire.
- secrets.Backend is now an alias of ports.Secrets; implementations
(Infisical, SOPS, Manager) unchanged. mcp's local secretBackend
subset is deleted; tool constructors take ports.Secrets.
- internal/db → internal/adapters/postgres (mechanical import rewrite;
package identifier stays db until the Phase 3 repository split).
sqlc.yaml, Makefile, golangci exclusions, and docs follow the move;
make generate-check verified.
- internal/adapters/ssh: Executor implements ports.CommandExecutor over
the actuator dial pool + RunStreaming (10-min default timeout carried
over from the httpapi path).
- internal/adapters/remote: Resolver implements ports.TargetResolver
delegating to internal/remote (still pool-based; drops onto
ports.EntityRepository when repositories land in Phase 3 — documented
transitional import).
- internal/core/ports/portstest: importable fakes — in-memory
EntityRepo (with check-then-act SetState, side-effect recording),
RecordingExecutor, FakeChecker, SpyPublisher; port-satisfaction
guards; tests.
Risk: ports are declared ahead of implementations — signatures firm up
per phase as slices land (documented in the package doc); the
remote→postgres transitional import is explicit and dissolves in
Phase 3.
Verification: go vet, make test (race, 19 packages), generate-check,
golangci on core+adapters — 0 issues; full-repo baseline down
365→344.
Problem: the hexagonal-architecture plan (plans/2026-08-15-hexagonal-
architecture.md) needs its foundation — an accepted ADR, the target
directory tree, and machine-checked dependency rules — before any
service extraction starts. Also folds the four outstanding review
findings (F3.1/F5/F6/F7) into the plan: ObservationService owns the
bounded probe-concurrency contract (scheduler.go:133), Phase 9 gates
ExecutionService+PolicyService ≥ 90% with a gating-matrix test,
per-phase abort criteria, and the §3.2 internal/config note.
Change:
- docs/adr/0016-hexagonal-ports-adapters.md records context, decision,
and consequences of the ports & adapters migration.
- internal/domain → internal/core/domain (mechanical import rewrite,
20 files), new internal/core/{ports,app}, internal/adapters trees
with package docs.
- .golangci.yml: depguard rules for §3.1 (core purity, no agent-client
tech in core, nomos isolation — the nomos rules self-activate when
internal/nomos exists in Phase 8). Config migrated to golangci-lint
v2 format so it loads at all (the v1 config errored under v2, masked
by CI's advisory continue-on-error). Verified depguard fires on a
planted openai-go import in internal/core/app.
- CONTRIBUTING.md layout section now shows the core/adapters tree.
Risk: import path churn is mechanical and tests pass unchanged; the
lint config migration surfaces the pre-existing 400-issue baseline
(advisory in CI, unchanged policy) — new/moved packages lint clean.
Verification: go vet ./..., make test (race, core/domain at 100%
coverage), make generate-check, golangci-lint on internal/core/... and
internal/adapters/... — 0 issues; depguard violation probe confirmed.
