19.0 vanilla

odoo-bringout-oca-ocb-point_of_sale/point_of_sale/upgrades/1.0.2/post-deduplicate-uuids.py

@@ -0,0 +1,41 @@
+import uuid
+from psycopg2.extras import Json
+from odoo.tools import split_every
+
+def migrate(cr, version):
+    """
+    When UUIDs were introduced for POS [order, order.line, payment] records,
+    they were initially generated on the backend, defined as the default value
+    on the column. The issue with this is that during the upgrade to 18.0+
+    from a version < 18.0, this default value is determined once for the column
+    and then applied to all records, resulting in one UUID, duplicated across 
+    all existing POS records.
+    
+    This migration fixes the issue by generating a new UUID for each record
+    that has the same UUID as another record. Specifically, it does this for
+    the following tables:
+    - pos_order
+    - pos_order_line
+    - pos_payment
+    """
+    def deduplicate_uuids(table):
+        query = f"""
+        SELECT UNNEST(ARRAY_AGG(id))
+          FROM {table}
+         WHERE uuid IS NOT NULL
+         GROUP BY uuid
+        HAVING COUNT(*) > 1
+        """
+        while True:
+            cr.execute(query)
+            if not cr.rowcount:
+                break
+            ids = tuple(r[0] for r in cr.fetchmany(10000))
+            cr.execute(
+                f"UPDATE {table} SET uuid = (%s::json)->>(id::text) WHERE id IN %s",
+                [Json({id_: str(uuid.uuid4()) for id_ in ids}), ids]
+            )
+
+    deduplicate_uuids("pos_order")
+    deduplicate_uuids("pos_order_line")
+    deduplicate_uuids("pos_payment")