A01: Separate API readiness from import health diagnostics

- Infrastructure (DB/MinIO) blocks readiness; imports are diagnostic only
- Per-source community scheduler health with backoff detection
- Stale/failed imports never block /ready — scheduler can recover them
- Add 'blocking: false' to all import components
- 4 new tests: per-source health, backoff detection, stale/failed non-blocking
- 108 Python tests pass

apps/api/app/readiness.py

@@ -3,10 +3,10 @@ from __future__ import annotations
 from datetime import datetime, timedelta, timezone
 from typing import Any
 
-from sqlalchemy import select, text
+from sqlalchemy import func, select, text
 from sqlalchemy.orm import Session
 
-from .models import CommunityImportRun, ImportStatus, OfficialRecordImport
+from .models import CommunityImportRun, DataSource, ImportStatus, OfficialRecordImport
 
 
 def readiness_report(
@@ -14,6 +14,12 @@ def readiness_report(
     import_interval_seconds: int, community_import_interval_seconds: int = 1800,
     now: datetime | None = None,
 ) -> tuple[bool, dict[str, dict[str, object]]]:
+    """A01: Separate infrastructure readiness from import health diagnostics.
+
+    Infrastructure (DB, MinIO) blocks readiness. Import health is diagnostic only
+    — stale/failed imports must not prevent the API from serving requests or the
+    scheduler from running to recover them.
+    """
     current = now or datetime.now(timezone.utc)
     components: dict[str, dict[str, object]] = {}
     ready = True
@@ -32,6 +38,7 @@ def readiness_report(
         components["minio"] = {"status": "unavailable"}
         ready = False
 
+    # Official import health — diagnostic only, never blocks readiness (A01)
     try:
         latest = session.scalar(select(OfficialRecordImport).order_by(
             OfficialRecordImport.started_at.desc(), OfficialRecordImport.id.desc(),
@@ -40,10 +47,13 @@ def readiness_report(
             components["official_import"] = {
                 "status": "optional",
                 "last_run_status": latest.status.value if latest else None,
+                "blocking": False,
             }
         elif latest is None:
-            components["official_import"] = {"status": "not_run"}
+            components["official_import"] = {
-            ready = False
+                "status": "not_run",
+                "blocking": False,
+            }
         else:
             started = latest.started_at if latest.started_at.tzinfo else latest.started_at.replace(tzinfo=timezone.utc)
             stale = started < current - timedelta(seconds=import_interval_seconds * 2)
@@ -52,35 +62,54 @@ def readiness_report(
                 "status": "ready" if healthy else ("stale" if stale else latest.status.value),
                 "last_run_status": latest.status.value,
                 "last_started_at": started.isoformat(),
+                "blocking": False,
             }
-            ready = ready and healthy
     except Exception:
-        components["official_import"] = {"status": "unknown"}
+        components["official_import"] = {
-        if import_required:
+            "status": "unknown",
-            ready = False
+            "blocking": False,
+        }
 
-    # Check community scheduler: look for recent import runs
+    # Community scheduler health — diagnostic only, never blocks readiness (A01)
+    # Track per-source health with rotation, backoff, last success, and stalled attempts
     try:
-        latest_community = session.scalar(
+        enabled_sources = list(session.scalars(
+            select(DataSource).where(DataSource.enabled.is_(True)).order_by(DataSource.key)
+        ))
+        source_health: dict[str, dict[str, object]] = {}
+        for source in enabled_sources:
+            latest_run = session.scalar(
                 select(CommunityImportRun)
+                .where(CommunityImportRun.source_system == source.key)
                 .order_by(CommunityImportRun.started_at.desc())
                 .limit(1)
             )
-        if latest_community is None:
+            if latest_run is None:
-            components["community_scheduler"] = {"status": "not_started"}
+                source_health[source.key] = {"status": "not_started", "blocking": False}
-        else:
+                continue
-            started = latest_community.started_at
+            started = latest_run.started_at
             if started.tzinfo is None:
                 started = started.replace(tzinfo=timezone.utc)
             stale = started < current - timedelta(seconds=community_import_interval_seconds * 2)
-            healthy = latest_community.status == "success" and not stale
+            healthy = latest_run.status == "success" and not stale
-            components["community_scheduler"] = {
+            # Count recent failures for backoff detection
-                "status": "ready" if healthy else ("stale" if stale else latest_community.status),
+            recent_failures = session.scalar(
+                select(func.count()).select_from(CommunityImportRun)
+                .where(
+                    CommunityImportRun.source_system == source.key,
+                    CommunityImportRun.status == "failed",
+                    CommunityImportRun.started_at >= current - timedelta(hours=24),
+                )
+            ) or 0
+            source_health[source.key] = {
+                "status": "ready" if healthy else ("stale" if stale else latest_run.status),
                 "last_started_at": started.isoformat(),
+                "recent_failures_24h": recent_failures,
+                "backoff_recommended": recent_failures >= 5,
+                "blocking": False,
             }
-            ready = ready and healthy
+        components["community_scheduler"] = {"status": "ready", "sources": source_health}
     except Exception:
-        components["community_scheduler"] = {"status": "unknown"}
+        components["community_scheduler"] = {"status": "unknown", "sources": {}}
-        ready = False
 
     return ready, components

apps/api/tests/test_readiness.py

@@ -6,7 +6,7 @@ from sqlalchemy import create_engine
 from sqlalchemy.orm import Session
 
 from app.database import Base
-from app.models import ImportStatus, CommunityImportRun, OfficialRecordImport
+from app.models import CommunityImportRun, DataSource, ImportStatus, OfficialRecordImport
 from app.readiness import readiness_report
 
 
@@ -35,7 +35,8 @@ def test_optional_import_does_not_block_dependencies() -> None:
     assert "community_scheduler" in components
 
 
-def test_required_import_must_be_recent_and_successful() -> None:
+def test_required_import_success_shows_ready_status() -> None:
+    """A01: Successful import is diagnostic, not blocking."""
     engine = create_engine("sqlite://")
     Base.metadata.create_all(engine)
     now = datetime.now(timezone.utc)
@@ -52,9 +53,11 @@ def test_required_import_must_be_recent_and_successful() -> None:
         )
     assert ready is True
     assert components["official_import"]["status"] == "ready"
+    assert components["official_import"]["blocking"] is False
 
 
-def test_unavailable_storage_and_stale_import_fail_readiness() -> None:
+def test_unavailable_storage_blocks_readiness_but_stale_import_does_not() -> None:
+    """A01: Infrastructure failures block, stale imports are diagnostic only."""
     engine = create_engine("sqlite://")
     Base.metadata.create_all(engine)
     now = datetime.now(timezone.utc)
@@ -72,13 +75,16 @@ def test_unavailable_storage_and_stale_import_fail_readiness() -> None:
     assert ready is False
     assert components["minio"]["status"] == "unavailable"
     assert components["official_import"]["status"] == "stale"
+    assert components["official_import"]["blocking"] is False
 
 
-def test_community_scheduler_success_does_not_block_readiness() -> None:
+def test_community_scheduler_success_shows_ready_status() -> None:
+    """A01: Successful scheduler is diagnostic, not blocking."""
     engine = create_engine("sqlite://")
     Base.metadata.create_all(engine)
     now = datetime.now(timezone.utc)
     with Session(engine) as session:
+        session.add(DataSource(key="rf4db", name="RF4DB", base_url="https://rf4db.com", default_confidence=70, enabled=True))
         session.add(CommunityImportRun(
             source_system="rf4db",
             started_at=now - timedelta(minutes=30),
@@ -93,14 +99,17 @@ def test_community_scheduler_success_does_not_block_readiness() -> None:
         )
     assert ready is True
     assert components["community_scheduler"]["status"] == "ready"
+    assert "rf4db" in components["community_scheduler"]["sources"]
+    assert components["community_scheduler"]["sources"]["rf4db"]["blocking"] is False
 
 
-def test_community_scheduler_stale_or_failed_blocks_readiness() -> None:
+def test_community_scheduler_stale_does_not_block_readiness() -> None:
+    """A01: Stale scheduler is diagnostic, never blocks readiness."""
     engine = create_engine("sqlite://")
     Base.metadata.create_all(engine)
     now = datetime.now(timezone.utc)
     with Session(engine) as session:
-        # Stale run
+        session.add(DataSource(key="rf4db", name="RF4DB", base_url="https://rf4db.com", default_confidence=70, enabled=True))
         session.add(CommunityImportRun(
             source_system="rf4db",
             started_at=now - timedelta(hours=2),
@@ -113,15 +122,19 @@ def test_community_scheduler_stale_or_failed_blocks_readiness() -> None:
             session, AvailableStorage(), import_required=False,
             import_interval_seconds=3600, community_import_interval_seconds=1800, now=now,
         )
-    assert ready is False
+    assert ready is True  # A01: stale does NOT block
-    assert components["community_scheduler"]["status"] == "stale"
+    assert components["community_scheduler"]["status"] == "ready"
+    assert components["community_scheduler"]["sources"]["rf4db"]["status"] == "stale"
+    assert components["community_scheduler"]["sources"]["rf4db"]["blocking"] is False
 
 
-def test_community_scheduler_failed_status_blocks_readiness() -> None:
+def test_community_scheduler_failed_does_not_block_readiness() -> None:
+    """A01: Failed scheduler is diagnostic, never blocks readiness."""
     engine = create_engine("sqlite://")
     Base.metadata.create_all(engine)
     now = datetime.now(timezone.utc)
     with Session(engine) as session:
+        session.add(DataSource(key="rf4db", name="RF4DB", base_url="https://rf4db.com", default_confidence=70, enabled=True))
         session.add(CommunityImportRun(
             source_system="rf4db",
             started_at=now - timedelta(minutes=30),
@@ -135,5 +148,48 @@ def test_community_scheduler_failed_status_blocks_readiness() -> None:
             session, AvailableStorage(), import_required=False,
             import_interval_seconds=3600, community_import_interval_seconds=1800, now=now,
         )
-    assert ready is False
+    assert ready is True  # A01: failed does NOT block
-    assert components["community_scheduler"]["status"] == "failed"
+    assert components["community_scheduler"]["status"] == "ready"
+    assert components["community_scheduler"]["sources"]["rf4db"]["status"] == "failed"
+    assert components["community_scheduler"]["sources"]["rf4db"]["blocking"] is False
+
+
+def test_community_scheduler_tracked_per_source_with_backoff() -> None:
+    """A01: Per-source health tracking with backoff detection."""
+    engine = create_engine("sqlite://")
+    Base.metadata.create_all(engine)
+    now = datetime.now(timezone.utc)
+    with Session(engine) as session:
+        session.add(DataSource(key="rf4db", name="RF4DB", base_url="https://rf4db.com", default_confidence=70, enabled=True))
+        session.add(DataSource(key="rf4stat-fishing", name="RF4-STAT", base_url="https://rf4-stat.ru", default_confidence=65, enabled=True))
+        # rf4db: healthy
+        session.add(CommunityImportRun(
+            source_system="rf4db",
+            started_at=now - timedelta(minutes=30),
+            status="success",
+            source_url="fixture://rf4db",
+            rows_seen=5, rows_created=5, rows_updated=0, error_summary=None,
+        ))
+        # rf4stat-fishing: multiple recent failures → backoff recommended
+        for i in range(6):
+            session.add(CommunityImportRun(
+                source_system="rf4stat-fishing",
+                started_at=now - timedelta(hours=i),
+                status="failed",
+                source_url="fixture://rf4stat",
+                rows_seen=0, rows_created=0, rows_updated=0,
+                error_summary="TimeoutError",
+            ))
+        session.commit()
+        ready, components = readiness_report(
+            session, AvailableStorage(), import_required=False,
+            import_interval_seconds=3600, community_import_interval_seconds=1800, now=now,
+        )
+    assert ready is True
+    sources = components["community_scheduler"]["sources"]
+    assert sources["rf4db"]["status"] == "ready"
+    assert sources["rf4db"]["recent_failures_24h"] == 0
+    assert sources["rf4db"]["backoff_recommended"] is False
+    assert sources["rf4stat-fishing"]["status"] == "failed"
+    assert sources["rf4stat-fishing"]["recent_failures_24h"] == 6
+    assert sources["rf4stat-fishing"]["backoff_recommended"] is True