Initialize clean CSR inventory repository

inventory/migrations/0002_postgres_search_indexes.py

@@ -0,0 +1,30 @@
+from django.db import migrations
+
+
+def add_postgres_indexes(apps, schema_editor):
+    if schema_editor.connection.vendor != "postgresql":
+        return
+    statements = [
+        "CREATE EXTENSION IF NOT EXISTS pg_trgm",
+        "CREATE INDEX IF NOT EXISTS inventory_device_cpu_trgm ON inventory_device USING gin (cpu gin_trgm_ops)",
+        "CREATE INDEX IF NOT EXISTS inventory_device_model_trgm ON inventory_device USING gin (model gin_trgm_ops)",
+        "CREATE INDEX IF NOT EXISTS inventory_device_ticket_trgm ON inventory_device USING gin (ticket gin_trgm_ops)",
+        "CREATE INDEX IF NOT EXISTS inventory_device_donor_trgm ON inventory_device USING gin (donor gin_trgm_ops)",
+        "CREATE INDEX IF NOT EXISTS inventory_device_custom_values_gin ON inventory_device USING gin (custom_values jsonb_path_ops)",
+    ]
+    with schema_editor.connection.cursor() as cursor:
+        for statement in statements:
+            cursor.execute(statement)
+
+
+def remove_postgres_indexes(apps, schema_editor):
+    if schema_editor.connection.vendor != "postgresql":
+        return
+    with schema_editor.connection.cursor() as cursor:
+        for name in ["inventory_device_cpu_trgm", "inventory_device_model_trgm", "inventory_device_ticket_trgm", "inventory_device_donor_trgm", "inventory_device_custom_values_gin"]:
+            cursor.execute(f"DROP INDEX IF EXISTS {name}")
+
+
+class Migration(migrations.Migration):
+    dependencies = [("inventory", "0001_initial")]
+    operations = [migrations.RunPython(add_postgres_indexes, remove_postgres_indexes)]