- CLI: add topology selection (-t/--topology), preview flags (--show/--report), and removable policy override (--allow-removable) (src/cli/args.rs) - Config: built-in sensible defaults; deterministic overlays for logging, fstab, removable, topology (src/config/loader.rs) - Device: discovery via /proc + /sys with include/exclude regex and removable policy (src/device/discovery.rs) - Idempotency: detection via blkid; safe emptiness checks (src/idempotency/mod.rs) - Partition: topology-driven planning (Single, DualIndependent, BtrfsRaid1, SsdHddBcachefs) (src/partition/plan.rs) - FS: planning + creation (mkfs.vfat, mkfs.btrfs, bcachefs format) and UUID capture via blkid (src/fs/plan.rs) - Orchestrator: pre-flight with preview JSON (disks, partition_plan, filesystems_planned, mount scheme). Skips emptiness in preview; supports stdout+file (src/orchestrator/run.rs) - Util/Logging/Types/Errors: process execution, tracing, shared types (src/util/mod.rs, src/logging/mod.rs, src/types.rs, src/errors.rs) - Docs: add README with exhaustive usage and preview JSON shape (README.md) Builds and unit tests pass: discovery, util, idempotency helpers, and fs parser tests.
3.7 KiB
3.7 KiB
ADR 0001: Modular Development Workflow with Grep-able Contracts and Regions
Status
- Accepted
- Date: 2025-09-25
Context
- The project will be developed iteratively with frequent returns and feature additions. We need a workflow that avoids re-reading the entire tree to find context.
- APIs should remain stable and discoverable, with a single source of truth for contracts and invariants.
- Contributors should be able to quickly grep the repository and see where to implement behavior, extend via hooks, and understand safety/error mapping.
Decision
- Adopt a modular development workflow comprising:
-
Contract-first documentation
- Keep canonical API declarations in docs/API-SKELETONS.md.
- Mirror these contracts in module headers and doc comments.
-
Grep-friendly REGION markers in source files
- Each module (where applicable) starts with compact region markers:
- REGION: API — one-liners listing public items and signatures
- REGION: RESPONSIBILITIES — scope/non-goals
- REGION: EXTENSION_POINTS — how to extend without rewriting
- REGION: SAFETY — invariants and safety/idempotency constraints
- REGION: ERROR_MAPPING — standard mapping to error types
- REGION: TODO — active work or future steps
- These markers enable quick discovery via grep without deep reading.
- Each module (where applicable) starts with compact region markers:
-
ADRs for architectural decisions
- Document significant structural or process choices in docs/adr/.
- Cross-link in docs/ARCHITECTURE.md when decisions are refined/superseded.
-
Examples and fixtures
- Maintain comprehensive example configs in config/, beginning with config/zosstorage.example.yaml.
-
Golden path to resume work
- Read module headers, grep REGION markers, consult docs/API-SKELETONS.md and recent ADRs, and check docs/SPECS.md for in-progress notes.
-
Consequences
-
Pros
- Fast onboarding and re-entry; contributors quickly find affected code by grepping markers or function names.
- Clear boundaries and invariants reduce coupling across modules.
- Documentation remains synchronized with code via consistent, enforceable patterns.
-
Cons
- Slight overhead to keep REGION markers and API docs updated.
- Requires discipline to maintain concise one-liners and avoid duplication.
Implementation Notes
- Region markers have been added to key modules:
- Remaining modules will follow the same pattern as needed (e.g., util, idempotency, main/lib if helpful).
Related Documents
- Architecture: docs/ARCHITECTURE.md
- API Index: docs/API-SKELETONS.md
- Specs: docs/SPECS.md
- Dev Workflow: docs/DEV_WORKFLOW.md
- Example Config: config/zosstorage.example.yaml
Alternatives Considered
- Heavy code generation for interface docs — rejected due to complexity and limited incremental value for a small codebase.
- Relying solely on doc comments — insufficient discoverability without grep-able structured markers.
Adoption Plan
- Keep REGION markers up to date with each change to public APIs and module scope.
- Update docs/API-SKELETONS.md when signatures change.
- Add new ADRs when we introduce significant architectural adjustments.