Code import - branch feature/SIENTIAPDE-1646

e2e/scenarios.md

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+# E2E Scenario Documentation — Orchestrator
+
+Functional reference for orchestrator E2E scenarios. Tests live under `e2e/`, use `@pytest.mark.e2e`, and run with:
+
+```bash
+pytest e2e/ --override-ini testpaths=e2e -m e2e
+```
+
+## Execution context
+
+- MongoDB, Redis, PostgreSQL: testcontainers (session-scoped).
+- SMTP: in-process `aiosmtpd` (`e2e/smtp_test_server.py`).
+- Temporal: `WorkflowEnvironment.start_local()` with stub workers on `scouter` / `laborious`.
+- Production code under `orchestrator/**` is not mocked; only `Logger` may be a `MagicMock`.
+
+---
+
+## 1. Orchestrator workflow
+
+Source: `e2e/test_orchestrator_main_workflow.py`
+
+### 1.1.1 Happy path
+
+Pipelines in Mongo → schedules created in correct namespace/task queue, Redis slots written, `orchestrated_schedules` updated.
+
+### 1.2.1 No-op tick
+
+Mongo, Redis, and Temporal already match desired state → no new schedules or slot writes.
+
+### 1.3.1 Create-only
+
+New pipeline only → schedules created, timestamps inserted.
+
+### 1.3.2 Update-only
+
+Existing pipeline with newer `updated_at` → schedule updated in Temporal.
+
+### 1.3.3 Delete-only
+
+Pipeline removed from Mongo → schedule deleted from Temporal.
+
+### 1.4.1 Conflict ordering
+
+Pipeline update and slot delete on same OPC server → slot insert before delete (production ordering).
+
+### 1.5.1 Empty pipelines
+
+No active pipelines → orphan schedules removed, no new orchestration writes.
+
+### 1.6.1 TTL index bootstrap
+
+First run creates TTL index on notification collection used by scouter pipelines.
+
+---
+
+## 2. Alerts workflow
+
+Source: `e2e/test_alerts_main_workflow.py`
+
+### A.1.1 Happy path
+
+ERROR notification → one SMTP message, one `log_report` row, Redis cache key.
+
+### A.1.2 TTL duplicate suppression
+
+Second run with same data and cache seeded → no extra email or log row.
+
+### A.1.3 Persistent escalation
+
+Alert past `notification_ttl` with cache cleared → new email sent.
+
+### A.2.1 Group filtering
+
+Receiver group `levels` / `ignore_models` honored.
+
+### A.3.1 Empty queue
+
+No notifications → no SMTP, no Postgres row.
+
+---
+
+## 3. Reports workflow
+
+Source: `e2e/test_reports_main_workflow.py`
+
+### R.1.1 Happy path
+
+Mixed ERROR/WARNING/INFO → one HTML email with all section headings.
+
+### R.1.2 Per-level rendering
+
+Single-level notifications → only matching section in HTML body.
+
+### R.2.1 Empty queue
+
+No notifications → no SMTP, no Postgres row.
+
+---
+
+## 4. Subworkflows
+
+### LoadNotificationPackage — `e2e/test_subworkflow_load_notification_package.py`
+
+- No prior Redis timestamp → all matching notifications returned, max timestamp stored.
+- Prior timestamp → only newer notifications returned.
+- Empty Mongo → no Redis timestamp write.
+
+### ProcessNotifications — `e2e/test_subworkflow_process_notifications.py`
+
+- Full round trip: HTML → SMTP → `log_report` in Postgres.
+- Empty receiver groups → `{}`.