59 lines
3.5 KiB
Markdown
59 lines
3.5 KiB
Markdown
# Aether V3 Development Standards & Strategy
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This document serves as the master guide for the Aether API V3. It combines core architectural principles with the finalized infrastructure standards established in January 2026.
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## 1. Core Principles
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- **`id_random` Primary**: `id_random` (URL-safe string) is the only identifier exposed to clients. Internal integer `id` is a private implementation detail.
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- **Singular naming**: All object types and prefixes use singular form (e.g., `journal`, not `journals`).
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- **Inheritance**: All models must inherit from `CoreObject` to ensure consistent base fields.
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- **Separation of Concerns**: Business logic lives in `app/methods/`, CRUD helpers in `app/lib_sql_crud.py`, and routing in `app/routers/`.
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## 2. Infrastructure Standards
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Finalized Jan 15, 2026, to ensure boot stability.
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### Application Entry Point (`app/main.py`)
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- **Registry Pattern**: All routers are registered via `app/routers/registry.py`.
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- **Lifespan Management**: All startup tasks (logging setup, DB bootstrap, engine refresh) MUST reside within the `@contextlib.asynccontextmanager` lifespan.
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- **No Top-Level Logic**: No SQL queries or heavy initialization should execute at the module level.
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### Database Layering
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- **`lib_sql_core.py`**: The foundational "Source of Truth" for the SQLAlchemy engine and global `db` connection.
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- **`lib_sql_crud.py`**: High-level logic for `sql_insert`, `sql_select`, etc.
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- **`db_sql.py`**: A backward-compatible facade. code should import from here.
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### Logging
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- **Explicit Setup**: `setup_logging(settings)` must be called during the lifespan startup.
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- **`lib_log_v3.py`**: New home for logging configuration and the `logger_reset` decorator.
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## 3. V3 CRUD Strategy
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### URL Structure
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- **Top-Level**: `/v3/crud/{obj_type}/`
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- **Nested**: `/v3/crud/{parent_type}/{parent_id_random}/{obj_type}/` (Enforces parent ownership).
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### Search API
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- **POST Based**: Complex filtering is handled via `POST /search` with a JSON body containing `and`, `or`, and `not` logic.
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- **Hybrid Filtering**: (Proposed) Query parameters should append simple standard filters (e.g., `?enabled=true`) to the complex body logic.
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### Field Evolution Checklist
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When a table or view gains, loses, or renames fields, keep the API contract and search registry in sync:
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1. Update the Pydantic model in `app/models/` first so CRUD serialization matches the new shape.
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2. Update the SQL view or table projection so `GET` and `SEARCH` responses actually return the field.
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3. Update `searchable_fields` in `app/object_definitions/` only for fields that should be searchable.
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4. Add write-only, virtual, or view-only fields to `fields_to_exclude_from_db` when they must not be persisted.
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5. Run the schema/search E2E tests that cover the object type before handing the change off.
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For `archive_content`, the public field set now includes `external_id` and `code`, and future additions should follow the same order of operations.
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### Response Views (Proposed)
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- Implement a `view` parameter (e.g., `?view=rich`) to allow clients to request joined data without using legacy `use_alt_tbl` flags.
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## 4. Stability Rules
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1. **Baby Step Testing**: Restart Docker and verify root health after *every* modular change.
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2. **Avoid Shadowing**: Never name a module part of the `app.` package the same as a common instance variable (e.g., avoid `app.middleware` package if you use `app = FastAPI()`).
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3. **Deferred Imports**: Use `from app.db_sql import ...` *inside* functions in library modules to prevent circular dependency traps.
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