Files
acdl/docs/pipeline/versioning.md
T
Jon Chery 031887ec56 refactor(P57): contract surface redesign + rename + .yml repo-wide
Contract surface redesign:
- New top-level fields: id (3-6 char acronym → stack.name), name (full → stack.title),
  infrastructure (map keyed by module name, replaces module:)
- Drop uses: field (dead reference; version pin lives in CI workflow uses: line)
- Drop top-level module/inputs (now nested under infrastructure map)
- Per-module optional version (defaults to latest published from registry)
- Multi-module contracts: one file deploys N modules in one pipeline run,
  resource IDs namespaced with module name to avoid collisions
- stack.schema.json: add optional title field for display name

Rename:
- pipelines/deploy.yaml → pipelines/contract.yml (declarative spec, not a pipeline)
- pipelines/ci.yaml → pipelines/ci.yml
- All 44 .yaml files → .yml repo-wide (contracts, module examples, kyverno policies)
- .acdl/contract.yaml → .acdl/contract.yml

Resolver (core/contract_resolver.py):
- Rewrite resolve() to loop infrastructure map, default version to latest,
  merge module fragments into one stack with namespaced resource IDs
- _latest_version() picks highest non-deprecated from registry
- _namespace_resources() prefixes IDs + rewrites ref: expressions for multi-module
- Single-module path: unprefixed IDs (backward compatible)

Verification:
- 494 tests pass (0 contract-shape failures)
- Local E2E passes (contract → resolver → adapter → local ECS HTTP 200 → outbox)

---ci---
project: acdl
phase: 57
milestone: v1.10.2
status: execute
---/ci---
2026-07-27 21:37:40 +00:00

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2.3 KiB
Markdown

# Versioning
ACDL uses two versioning schemes: one for modules, one for the deploy
pipeline. Both matter to a consumer.
## Module versioning
Primitives and modules use **semver** with three triggers:
- **interface → MAJOR** — a breaking change to the module's inputs/outputs.
- **behavior → MINOR** — a backward-compatible behavior change.
- **lifecycle → PATCH** — a fix or internal change.
A MAJOR bump requires a **new registry entry** (immutable publication); the
old entry enters a **12-month deprecation window**. A module pins its
primitives by `name@semver`; the resolver picks the highest compatible.
Module versions are tracked in
[`registry.json`](https://github.com/acdl/acdl/blob/main/modules/registry.json).
## Deploy-pipeline versioning (the CI workflow `uses:` tag)
The central deploy pipeline is referenced by a **floating MAJOR + MINOR
tag** in a consumer's CI workflow definition:
```yaml
jobs:
deploy:
uses: acdl/.github/workflows/deploy.yml@v1.6
with:
contract: .acdl/contract.yml
```
The version pin lives in the CI workflow reference (not in the contract
itself — the contract no longer carries a `uses:` field). The CI workflow
`uses:` tag is the only immutability lever a consumer has.
**Unversioned references are discouraged.** Do not use `@main` or a bare
`acdl/.github/workflows/deploy.yml``main` is constantly updated and can
cause unexpected failures. Pinning to a MAJOR+MINOR tag means:
- **Immutability** — the pipeline behavior you tested is the behavior you
get. Patch fixes flow within the tag; breaking changes land under the
next MINOR tag (`@v1.5`), which you opt into explicitly.
- **Resilience** — your deployment does not break because an unrelated
change landed on `main`.
- **Reproducibility** — your setup is stable. You upgrade on your schedule
by bumping the tag.
## When a new tag is released
When a new MINOR tag is released (e.g. `@v1.5`), review its changelog and
bump your `uses:` reference when ready. The old tag continues to receive
patch fixes until the next MINOR tag.
## Production-bound references
For production-bound workflows, the platform resolves the current tag to its
SHA (tag for dev/qa, SHA for prod). This prevents a silent patch from
changing a production deployment. The platform provides a CLI command for
the tag → SHA resolution.