fix: stabilize earth bgp geography and rendering

backend/app/services/bgp_incidents.py

@@ -209,15 +209,14 @@ async def create_bgp_incidents_for_anomalies(
         grouped.setdefault(incident_key, []).append(anomaly)
 
     existing_result = await db.execute(
-        select(BGPIncident.incident_key).where(BGPIncident.incident_key.in_(sorted(grouped.keys())))
+        select(BGPIncident).where(BGPIncident.incident_key.in_(sorted(grouped.keys())))
     )
-    existing_keys = {row[0] for row in existing_result.fetchall()}
+    existing_incidents = {
+        incident.incident_key: incident for incident in existing_result.scalars().all()
+    }
 
     created = 0
     for incident_key, items in grouped.items():
-        if incident_key in existing_keys:
-            continue
-
         items = sorted(items, key=lambda item: item.created_at or item.started_at or datetime.now(UTC))
         primary = items[0]
         prefixes = sorted({item.prefix for item in items if item.prefix})
@@ -270,6 +269,28 @@ async def create_bgp_incidents_for_anomalies(
         )
         related_infrastructure = await infer_related_infrastructure(db, regions)
 
+        existing = existing_incidents.get(incident_key)
+        if existing is not None:
+            existing.snapshot_id = snapshot_id
+            existing.task_id = task_id
+            existing.source = source
+            existing.incident_type = primary.anomaly_type
+            existing.title = title
+            existing.summary = summary
+            existing.severity = severity
+            existing.status = "active"
+            existing.confidence = confidence
+            existing.started_at = primary.started_at or existing.started_at or datetime.now(UTC)
+            existing.ended_at = None
+            existing.affected_prefixes = prefixes
+            existing.affected_asns = asns
+            existing.affected_collectors = collectors
+            existing.affected_regions = regions
+            existing.related_cables = related_infrastructure["related_cables"]
+            existing.related_ixps = related_infrastructure["related_ixps"]
+            existing.evidence_refs = evidence_refs
+            continue
+
         db.add(
             BGPIncident(
                 snapshot_id=snapshot_id,
@@ -294,7 +315,7 @@ async def create_bgp_incidents_for_anomalies(
         )
         created += 1
 
-    if created:
+    if created or existing_incidents:
         await db.commit()
 
     return created