migrate data from mongo to postgres

awx/main/migrations/_system_tracking.py

@@ -0,0 +1,21 @@
+
+from awx.fact.models import FactVersion
+
+def migrate_facts(apps, schema_editor):
+    Fact = apps.get_model('main', "Fact")
+    Host = apps.get_model('main', "Host")
+
+    migrated_count = 0
+    not_migrated_count = 0
+    for factver in FactVersion.objects.all():
+        fact_obj = factver.fact 
+        try:
+            host = Host.objects.only('id').get(inventory__id=factver.host.inventory_id, name=factver.host.hostname)
+            Fact.objects.create(host_id=host.id, timestamp=fact_obj.timestamp, module=fact_obj.module, facts=fact_obj.fact).save()
+            migrated_count += 1
+        except Host.DoesNotExist:
+            # TODO: Log this. No host was found to migrate the facts to.
+            # This isn't a hard error. Just something the user would want to know.
+            not_migrated_count += 1
+
+    return (migrated_count, not_migrated_count)