feat: build registered sync models at runtime - #197
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estivate merged 27 commits intoAug 31, 2026
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The runtime model path needs every destination property that can change a constructed model or a planned write. The accessor's snapshot carried only attribute kind and relationship peer/cardinality, so optional/default/unique, relationship kind/optional, and each kind's ordered human-friendly ID and uniqueness-constraint component paths never crossed the adapter boundary. Add the closed normalized schema domain those consumers read, and widen the bundled Infrahub accessor to deliver it. Normalization is total: a value outside the domain refuses rather than being coerced, and members are ordered by name so snapshot delivery order cannot change anything derived from a snapshot. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
A registered worker has no generated Python to import, so it needs the model classes the generator would have written, constructed from the destination schema it discovers at run time. Build them with type(...) over a generated-equivalent intermediate base, reusing the generator's own identity and field-selection helpers so the two mechanisms cannot drift. The attribute-kind table is explicit rather than the generator's unknown-kind-to-str fallback: it names the four string-like kinds the maintained NetBox schema really declares, and a kind outside it refuses before extraction. Every call returns fresh classes, so two configurations sharing a kind name cannot reach each other's models. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Comparing a saved plan against a live schema needs a digest that changes exactly when the destination changes something the plan depended on. The existing subhash covers the configuration mapping plus sorted kind names, so a mapped attribute can change from Number to Text and still hash the same. Project the consumed semantics instead: each configured kind, its effective DiffSync identifiers, its ordered human-friendly ID and uniqueness-constraint component paths, every mapped field's properties, and every mandatory-without-default field on those kinds, mapped or not. Digest that canonically with SHA-256. Unmapped growth and snapshot delivery order do not move it. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Schema discovery, destination adapter construction, and the plan's destination binding each resolved a branch, and the interim validation helper read only the declared setting. A run could then discover one branch's schema while writing another's. Give them one resolver: declared destination branch, else the run request's branch, else main. Validation has no run request and passes none, so its behavior is unchanged. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
A registered worker has no generated Python in its configuration directory, but the only resolution path also probed for one. Split the installed half out: dotted path, entry point, or built-in module, plus the model base under the same spec the generated models file uses. import_adapter keeps its generated-first behavior for the legacy local path and now delegates its fallback here, so both paths resolve installed code the same way and the registered path never reads the configuration directory. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
…n fingerprint Registered composition now builds one run's model plan: it refuses a destination outside the Infrahub profile before any schema I/O, reads the destination schema once through the declared capability, and derives both sides' adapter classes, both sides' model classes, and the plan's schema fingerprint from that single snapshot. Engine assembly and the apply seam bind those classes onto the run's adapter instances, so a registered run never reads generated Python and two runs cannot share a class object. The legacy path is untouched. Configuration validation reports the same consumed-semantics fingerprint instead of the kind-name subhash, so a fingerprint a client sees is the fingerprint a run of that package against that schema records. The incremental cache keeps its own subhash. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Add the absence scan the isolation property needs: no module in the runtime schema path holds a mutable global, reaches the rendering or import machinery, or shares a writable table, so nothing one run builds can outlive it. Add the registered composed-sync case: plan, verify and apply legs reach execution through one instance built from one destination schema read. Making the managed stage's tail arguments keyword-only is what lets that case call it without a positional boolean. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Building the snapshot called str() on each human-friendly-ID and uniqueness component and on default mapping keys. A third-party object's own __str__ output would then enter the snapshot, and everything derived from it, rather than being refused — the one thing this boundary exists to prevent. Pass the values through and let the snapshot's shape gate answer, the way it already answers for member names, kinds, peers, and cardinalities. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Selecting both adapter classes inline pushed get_potenda_from_instance past the branch ceiling, and placing the plan's type import in the second TYPE_CHECKING block split the package's import grouping. Extract the selection into one helper that answers "which adapter classes does this run use" and group the import with its neighbours. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
…gins The installed-only resolvers built the general loader, which reads INFRAHUB_SYNC_ADAPTER_PATHS, searches configured adapter paths, and searches the working directory. A registered run could therefore load an arbitrary adapter module from disk — the shipped custom-adapter example resolves that way. Give the loader an installed_only constructor that disables filesystem resolution outright, and resolve registered adapters and model bases through it. Dotted imports, entry points, and bundled modules remain; nothing on disk does. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
The accepted profile lets a registered package pair an installed dotted-path or entry-point source with an Infrahub destination, but registered parsing refused source.adapter outright, so that profile could not be declared and the test that claimed to cover it actually used the bundled adapter. Accept a source adapter that names a dotted import target or an entry point, and refuse every filesystem form by property rather than by loader behaviour. The declaration is serialized when present, so it enters the package checksum; a package that omits it keeps its exact declared content and checksum. The destination adapter and adapters_path stay refused. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Every registered stage built a full two-sided plan before dispatch. Verify then performed live schema discovery although it returns before any adapter is built, and a saved-plan apply required the source plugin although it constructs the destination alone — reintroducing the source dependency a no-source apply exists to avoid. Prepare per stage: nothing for verify, the destination only for apply, both sides for plan and sync. Whatever a stage covers still comes from one schema read, and assembling a two-sided engine from an apply-scoped plan is refused where the classes are selected rather than by loading a source adapter. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
A declared default was interpolated between double quotes, so a destination declaring a default containing a quote produced invalid generated Python, and one containing a backslash or a control character produced Python whose value differs from the schema's. Strings are inside the closed runtime domain, so this was also a real parity gap between the two construction mechanisms. Render every default with repr, which is the literal that evaluates back to the declared value. Ruff normalizes the quoting afterwards, so the committed example files are unchanged. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
A non-finite float passed both schema extraction and normalization, then failed much later inside canonical encoding as an unrelated serialization error rather than the closed domain's own refusal. Separately, validation swallowed a closed-domain refusal and returned only a null fingerprint, so an operator saw a missing identity with no defect named while a run of the same package refused. Refuse a non-finite default at both boundaries, and give validation a destination-schema-unsupported-semantics finding so the worker and admission present the same verdict on the same snapshot. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
The snapshot documented itself as immutable but copied its kinds into an ordinary dictionary and kept list and mapping defaults mutable, so anything holding one could edit the value the models and the fingerprint were derived from. Freeze the kind mapping and every nested default. A model field's default still has to be mutable, so the attribute hands one out on request rather than sharing its own; canonical encoding reads the frozen forms unchanged. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
The validation contract said the fingerprint it reports is the one a run records on its plan. No plan manifest field, retained-plan comparison, or pre-write gate exists yet — that is the plan-guard unit that follows. Say what is true now: validation and registered worker construction compute the same projection, and recording it on a plan comes later. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
The evidence for AR1, AR3 and AR5 stopped short of the behaviour it claimed: the registered case patched execution before any adapter was built, the generated-file case bound models onto a recording object rather than running installed resolution, isolation was shown by sequential rebuilds, the branch matrix never reached a constructed destination, and the kind inventory only proved the captured examples were a subset of the closed table. Run a registered NetBox to Infrahub plan through real engine assembly, both real adapters, real extraction and a real saved plan, with only the two provider clients faked, and assert creates, updates, the resolved classes, the absence of generated Python, and the effective branch the destination received. Barrier-synchronise isolation across configurations, runs and rebuilds. Compare every admitted attribute kind in every required/optional/default state against the generator, and hold Integer — which the SDK's schema type cannot express, so no oracle can be rendered — to the generator's own type map. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Binding was only ever asserted on a single adapter instance, so a regression that bound onto the adapter class instead would have satisfied every assertion. Bind distinct plans concurrently onto several instances of one shared adapter class and check both halves: each instance keeps its own models, and the class stays untouched. The no-source apply oracle replaced both resolvers with one that always raises, and the destination is resolved first, so it reported the required destination call as though it were the source. Record the calls in order instead and assert the exact arguments, with a two-sided case proving the recorder distinguishes the sides at all. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
A distribution ordinarily publishes one entry point per adapter naming the adapter class. Entry-point resolution returned that class for every request, so asking the same entry point for the model base returned the adapter class, and a registered run built its models over an adapter. Answer whichever class the caller asked for: a loaded class that is not the requested base resolves through the module that defines it, the same module a module-valued entry point would have named. A module declaring no such class refuses. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Disabling filesystem resolution closed the explicit path and adapter-path arms, but a dotted spec still went through importlib, which searches sys.path and so reaches any module a checkout or the working directory makes importable. Give registered resolution a provenance rule instead: a dotted target is admitted when its top-level package is this distribution's own, or when installed distribution metadata reports an owning distribution. It is answered from metadata alone, before the import, so an uninstalled module is never even loaded. A third-party adapter installed editable reports no owner and is deliberately outside the registered profile. Restore the local path's fallback to the general loader at the same time: the earlier correction had routed it through installed-only resolution, which silently narrowed adapter-path, environment and filesystem resolution for the CLI. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Require registered dotted modules to resolve to files shipped by an installed distribution, and honor explicit entry-point class names exactly for both adapter and model resolution. This combines the dependent provenance and entry-point corrections into one green, bisectable unit. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Predicting an origin from sys.path decides whether to import, but says nothing about a name already in sys.modules: import_module returns that entry without consulting a finder, so a preloaded module bypassed the check entirely. A parent package's manipulated __path__ redirects a submodule the same way, and the bundled package was admitted by name alone, so a replaced infrahub_sync entry was trusted too. Ask the same provenance question about the module object before reading classes from it: a bundled module must come from inside the installed bundled package, located from this module's own file rather than from sys.modules, and everything else must be a file an installed distribution ships. No usable origin is a refusal. The local CLI path is unaffected. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
The origin walk required __init__.py at every level, so an adapter installed as a PEP 420 namespace distribution was refused even though its metadata named the exact module file. That is an ordinary way to ship a plugin, and the accepted profile admits it. Walk the import path component by component instead, combining namespace portions the way PEP 420 does. A regular package or module still ends the scan the moment it is met, so an earlier checkout shadows everything behind it, and a name that resolves to no file — a namespace package is a set of directories — is still refused. The exact target file must still match distribution metadata, so an unowned module in an earlier portion cannot pass as the shipped one. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
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WalkthroughThis change adds a runtime-schema execution path for registered runs. It defines a closed normalized destination schema domain, computes a consumed-schema SHA-256 fingerprint, and builds DiffSync model classes in memory. Registered source adapters can now declare installed-only adapter specs, and plugin loading now verifies installed distribution ownership for dotted modules and entry points. Managed flow and engine assembly store and use stage-scoped runtime model plans, bind model classes onto adapter instances, and share destination branch resolution. Docs and tests were updated to cover the new schema shape, validation code, installed resolution rules, and runtime execution path. Merge Risk: 🟠 High · up to Runtime adapter loading can execute package initialization before the package is proven to be approved, allowing rejected code to run with worker privileges; malformed schema paths or flags can also produce an unintended model definition and fingerprint. Merge should wait until entry-point provenance is checked before loading and raw schema values are strictly validated. 🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
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August 31, 2026 11:08
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Agentic review record. Runtime worker path — unit 1 of 2 of the runtime-schema-models outcome; the plan schema guard unit follows and stacks on this head. Registered workers build both sides' DiffSync model classes in memory from one immutable destination schema snapshot, ending the generated-Python and shared-filesystem requirement for the qualified NetBox → Infrahub workflow. The implementation envelope went through two independent review cycles before coding was authorized: the first returned NOT READY (one blocker, two majors, four minors — all closed, including replacing unknown-kind string coercion with a closed type table and unifying effective-branch selection), and a second focused review found a further apply-safety gap (human-friendly IDs and uniqueness constraints joined the fingerprint) before returning READY. A support-profile amendment (destination-Infrahub-only qualification, exact no- A stack-level pre-merge review of the complete diff verified: two-phase installed-distribution provenance on registered adapter resolution (pre-import metadata check plus post-import module-origin check; filesystem/CWD/env-path resolution disabled for registered execution); model construction reusing the generator's own field-selection helpers so parity cannot drift, with unknown kinds refusing instead of degrading to strings; per-call class construction with no global registration (structural isolation, barrier-tested); stage-scoped preparation with apply deferring the schema read until artifact binding verifies; typed reason-class-only failures; and a canonical consumed-semantics fingerprint invariant under delivery order and unmapped growth. ~3,700 of the ~5,100 added lines are tests, including concurrency-isolation barriers, absence scans, and three module-provenance suites. Current state: based exactly on the post-#195 head; all 16 repository checks pass at |
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Inline comments:
In `@infrahub_sync/configuration/capabilities.py`:
- Around line 312-315: Validate the raw destination response values for
human_friendly_id, uniqueness_constraints, and the related fields at the
indicated handling points before any list or bool coercion. Require path values
to be non-string sequences and flag values to be exact booleans; reject
malformed values rather than allowing conversions to alter the model definition
or fingerprint.
In `@infrahub_sync/plugin_loader.py`:
- Line 332: Update the installed-only entry-point loading logic around the
is_dotted condition to validate ep.module with is_installed_distribution_module
before calling ep.load(); reject uninstalled targets, then validate the loaded
module’s origin again after loading.
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📒 Files selected for processing (43)
docs/docs/reference/durable-product-records.mdxinfrahub_sync/__init__.pyinfrahub_sync/configuration/capabilities.pyinfrahub_sync/configuration/models.pyinfrahub_sync/configuration/runtime.pyinfrahub_sync/configuration/schema_validation.pyinfrahub_sync/generator/__init__.pyinfrahub_sync/managed/flow.pyinfrahub_sync/plugin_loader.pyinfrahub_sync/product_store/configs.pyinfrahub_sync/runtime_schema/__init__.pyinfrahub_sync/runtime_schema/domain.pyinfrahub_sync/runtime_schema/errors.pyinfrahub_sync/runtime_schema/models.pyinfrahub_sync/runtime_schema/projection.pyinfrahub_sync/runtime_schema/worker.pyinfrahub_sync/utils.pytasks/tests.pytests/configuration/test_contracts.pytests/configuration/test_schema_validation.pytests/conformance/test_managed_equivalence.pytests/managed/test_flow_and_prefect.pytests/managed/test_registered_plan_apply.pytests/product_store/test_validate_destination_schema.pytests/runtime_schema/__init__.pytests/runtime_schema/installed_distribution.pytests/runtime_schema/installed_source_adapter.pytests/runtime_schema/test_absence_scan.pytests/runtime_schema/test_accessor_snapshot.pytests/runtime_schema/test_concurrent_isolation.pytests/runtime_schema/test_domain.pytests/runtime_schema/test_dotted_provenance.pytests/runtime_schema/test_effective_branch.pytests/runtime_schema/test_entry_point_resolution.pytests/runtime_schema/test_installed_resolution.pytests/runtime_schema/test_model_builder.pytests/runtime_schema/test_namespace_provenance.pytests/runtime_schema/test_preloaded_module_origin.pytests/runtime_schema/test_projection.pytests/runtime_schema/test_registered_execution.pytests/runtime_schema/test_registered_resolution.pytests/runtime_schema/test_registered_source_declaration.pytests/runtime_schema/test_worker_path.py
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Agentic review record — addendum. Both CodeRabbit findings were verified against the code as genuine (an entry-point resolution path missing the installed-origin admission the dotted path enforces; snapshot normalization coercing malformed SDK values instead of refusing them) and are fixed at |
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Summary by CodeRabbit
New Features
Bug Fixes
Documentation
Registered workers can now construct isolated DiffSync models at runtime from the Infrahub destination schema. The qualified NetBox to Infrahub workflow no longer requires generated Python or a shared configuration filesystem.
Key Changes
_children.Related Context
Implements the runtime-worker unit of the V3 INFP-652 runtime-schema-models outcome. The retained-plan schema comparison remains intentionally separate in the next plan-schema-guard unit.
Documentation Updates
Test Plan
uv run pytest -q tests/runtime_schema— 212 passeduv run invoke lint— passed--helpand example listing — passedThe known SQLite 3.51 product-store failures reproduce on the exact base and are not attributable to this branch.