Migrate qualifiers to plain charfield step 2

Copy qualifiers to qualifiers_temp

Reference: aboutcode-org#1327
Signed-off-by: Philippe Ombredanne <[email protected]>

vulnerabilities/migrations/0047_copy_qualifiers_to_qualifiers_temp.py

@@ -0,0 +1,36 @@
+# Generated by Django 4.1.13 on 2023-12-05 11:42
+
+from django.db import migrations
+from packageurl import normalize_qualifiers
+
+
+class Migration(migrations.Migration):
+
+    def copy_qualifiers(apps, schema_editor):
+        """
+        Bulk update qualifiers_temp from the legacy JSON field
+        """
+        Package = apps.get_model("vulnerabilities", "Package")
+        updatables = []
+        for package in Package.objects.all():
+            qualifiers =package.qualifiers
+            normalized_string = normalize_qualifiers(qualifiers, encode=True)
+            package.qualifiers_temp = normalized_string
+            updatables.append(package)
+
+        updated = Package.objects.bulk_update(
+            objs = updatables,
+            fields=["qualifiers_temp",], 
+            batch_size=500,
+        )
+        print(f"Copied {updated} qualifiers to qualifiers_temp")            
+
+
+
+    dependencies = [
+        ("vulnerabilities", "0046_package_qualifiers_temp"),
+    ]
+
+    operations = [
+        migrations.RunPython(copy_qualifiers, reverse_code=migrations.RunPython.noop),
+    ]

vulnerabilities/models.py

@@ -578,7 +578,7 @@ class Package(PackageURLMixin):
     """
     """
     - X schema migration: create qualifiers_temp
-    - data migration copy as string the normalized qualifiers to qualifiers_temp
+    - X data migration copy as string the normalized qualifiers to qualifiers_temp
     - schema migration: add qualifiers_temp to unique together
     - schema migration: remove qualifiers override and from unique together
     - data migration copy as string the normalized qualifiers_temp to qualifiers