OpenSpec, план работ по одной task-е
## 1. Chain и policy
- [ ] 1.1 `data/label_policy.yaml`: добавить `service_id_chain` (дефолт `[service, service.name, app, app.kubernetes.io/name, job]`); загрузчик policy сохраняет порядок, поставляет дефолт при отсутствии поля
- [ ] 1.2 Функция извлечения `extract_service_id(labels, chain) -> (service_id, service_source)` — чистая, ≤N dict-lookup'ов; юнит-тесты: порядок приоритета (`service` бьёт `app`), fallback на `app`/`job`, пустой chain → `('', 'none')`, provenance-значения
superpowers, кусочек плана по той же task-е
### Task 1: Service ID Extraction Chain + Policy
**Files:**
- Create: `src/meta/service_id.py`
- Modify: `data/label_policy.yaml`
...
**Interfaces:**
- Produces: `extract_service_id(labels: dict[str, str], chain: list[str]) -> tuple[str, str]` — returns `(service_id, service_source)`
...
#### Step 1: Add `service_id_chain` to `label_policy.yaml`
- [ ] **Step 1.1: Edit `data/label_policy.yaml`** — append after `max_virtual_series`:
```yaml
# service_id_chain — ordered keys for deriving a metric's service identity
# (T2-22). The first key present in observed labels wins. Chain order:
# intentional instrumentation labels → infra labels → scrape labels.
# Changing the chain requires re-profiling affected metrics + regenerating
# templates (chain is part of the metric-identity contract).
service_id_chain:
- service
- service.name
- app
- app.kubernetes.io/name
- job
```
#### Step 2: Write failing tests for `extract_service_id`
- [ ] **Step 2.1: Create `tests/meta/test_service_id.py` with failing tests:**
```python
"""Unit tests for service_id extraction chain (T2-22)."""
from meta.service_id import extract_service_id
DEFAULT_CHAIN = ["service", "service.name", "app", "app.kubernetes.io/name", "job"]
def test_intentional_key_wins_over_infra():
labels = {"service": "payments", "app": "payments-prod-1"}
sid, src = extract_service_id(labels, DEFAULT_CHAIN)
assert sid == "payments"
assert src == "label:service"
...
ну и далее по TDD.
В плане даже команды запуска тестов и git add\git commit будут.
Детализация мягко говоря сильно отличается)
#ai
