fix(migration): add log for values unseen in Slice.datasource_type

superset/migrations/versions/2023-03-27_12-30_7e67aecbf3f1_chart_ds_constraint.py

@@ -27,6 +27,7 @@
 down_revision = "07f9a902af1b"
 
 import json
+import logging
 
 import sqlalchemy as sa
 from alembic import op
@@ -36,6 +37,8 @@
 
 Base = declarative_base()
 
+logger = logging.getLogger(__name__)
+
 
 class Slice(Base):  # type: ignore
     __tablename__ = "slices"
@@ -48,13 +51,21 @@ class Slice(Base):  # type: ignore
 def upgrade_slc(slc: Slice) -> None:
     # clean up all charts with datasource_type not != table
     slc.datasource_type = "table"
+    ds_id = None
+    ds_type = None
     try:
         params_dict = json.loads(slc.params)
         ds_id, ds_type = params_dict["datasource"].split("__")
+        # the assumption here is that the query was saved as a dataset
+        # but the type wasn't written properly to the slice
+        # by updating the type here we expect it will either work
+        # or it will 404 when the dataset is looked up.              
         params_dict["datasource"] = f"{ds_id}__table"
         slc.params = json.dumps(params_dict)
+        logger.warning("updated slice datasource from %s__%s to %s__table", ds_id, ds_type, ds_id)
     except Exception:
         # skip any malformatted params
+        logger.warning("failed to update slice.id = %s w/ datasource = %s__%s to %s__table", slc.id, ds_id, ds_type, ds_id)
         pass
 
 
@@ -63,9 +74,16 @@ def upgrade():
     session = db.Session(bind=bind)
 
     with op.batch_alter_table("slices") as batch_op:
-        for slc in session.query(Slice).filter(Slice.datasource_type == "query").all():
-            upgrade_slc(slc)
-            session.add(slc)
+        for slc in session.query(Slice).filter(Slice.datasource_type != "table").all():
+            if slc.datasource_type == "query":
+                upgrade_slc(slc)
+                session.add(slc)
+
+            else:
+                logger.warning(
+                    "unknown value detected for slc.datasource_type: %s",
+                    slc.datasource_type,
+                )
 
         batch_op.create_check_constraint(
             "ck_chart_datasource", "datasource_type in ('table')"