feat(plugin-chart-pivot-table): support series limit (apache#17803)

* feat(plugin-chart-pivot-table): support series limit

* Add a migration

* Use non-legacy series limit controls

* Add a todo comment

* Bug fix

superset-frontend/plugins/plugin-chart-pivot-table/src/plugin/buildQuery.ts

@@ -19,45 +19,31 @@
 import {
   buildQueryContext,
   ensureIsArray,
-  getMetricLabel,
-  normalizeOrderBy,
   QueryFormColumn,
+  QueryFormOrderBy,
 } from '@superset-ui/core';
 import { PivotTableQueryFormData } from '../types';
 
 export default function buildQuery(formData: PivotTableQueryFormData) {
-  const {
-    groupbyColumns = [],
-    groupbyRows = [],
-    order_desc = true,
-    legacy_order_by,
-  } = formData;
+  const { groupbyColumns = [], groupbyRows = [] } = formData;
   // TODO: add deduping of AdhocColumns
   const groupbySet = new Set([
     ...ensureIsArray<QueryFormColumn>(groupbyColumns),
     ...ensureIsArray<QueryFormColumn>(groupbyRows),
   ]);
   return buildQueryContext(formData, baseQueryObject => {
-    const queryObject = normalizeOrderBy({
-      ...baseQueryObject,
-      order_desc,
-      legacy_order_by,
-    });
-    const { metrics } = queryObject;
-    const orderBy = ensureIsArray(legacy_order_by);
-    if (
-      orderBy.length &&
-      !metrics?.find(
-        metric => getMetricLabel(metric) === getMetricLabel(orderBy[0]),
-      )
-    ) {
-      metrics?.push(orderBy[0]);
+    const { series_limit_metric, metrics, order_desc } = baseQueryObject;
+    let orderBy: QueryFormOrderBy[] | undefined;
+    if (series_limit_metric) {
+      orderBy = [[series_limit_metric, !order_desc]];
+    } else if (Array.isArray(metrics) && metrics[0]) {
+      orderBy = [[metrics[0], !order_desc]];
     }
     return [
       {
-        ...queryObject,
+        ...baseQueryObject,
+        orderby: orderBy,
         columns: [...groupbySet],
-        metrics,
       },
     ];
   });

superset-frontend/plugins/plugin-chart-pivot-table/src/plugin/controlPanel.tsx

@@ -30,7 +30,6 @@ import {
   sections,
   sharedControls,
   emitFilterControl,
-  legacySortBy,
 } from '@superset-ui/chart-controls';
 import { MetricsLayoutEnum } from '../types';
 
@@ -90,15 +89,41 @@ const config: ControlPanelConfig = {
         ],
         ['adhoc_filters'],
         emitFilterControl,
+        ['series_limit'],
         [
           {
             name: 'row_limit',
             config: {
               ...sharedControls.row_limit,
+              label: t('Cell limit'),
+              description: t('Limits the number of cells that get retrieved.'),
+            },
+          },
+        ],
+        // TODO(kgabryje): add series_columns control after control panel is redesigned to avoid clutter
+        [
+          {
+            name: 'series_limit_metric',
+            config: {
+              ...sharedControls.series_limit_metric,
+              description: t(
+                'Metric used to define how the top series are sorted if a series or cell limit is present. ' +
+                  'If undefined reverts to the first metric (where appropriate).',
+              ),
+            },
+          },
+        ],
+        [
+          {
+            name: 'order_desc',
+            config: {
+              type: 'CheckboxControl',
+              label: t('Sort Descending'),
+              default: true,
+              description: t('Whether to sort descending or ascending'),
             },
           },
         ],
-        ...legacySortBy,
       ],
     },
     {

superset/migrations/versions/31bb738bd1d2_move_pivot_table_v2_legacy_order_by_to_.py

@@ -0,0 +1,95 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+"""move_pivot_table_v2_legacy_order_by_to_timeseries_limit_metric
+
+Revision ID: 31bb738bd1d2
+Revises: fe23025b9441
+Create Date: 2021-12-17 16:56:55.186285
+
+"""
+
+# revision identifiers, used by Alembic.
+revision = "31bb738bd1d2"
+down_revision = "fe23025b9441"
+
+
+import json
+import logging
+
+from alembic import op
+from sqlalchemy import Column, Integer, String, Text
+from sqlalchemy.ext.declarative import declarative_base
+
+from superset import db
+
+Base = declarative_base()
+
+logger = logging.getLogger("alembic")
+
+
+class Slice(Base):
+    __tablename__ = "slices"
+
+    id = Column(Integer, primary_key=True)
+    params = Column(Text)
+    viz_type = Column(String(250))
+
+
+def upgrade():
+    bind = op.get_bind()
+    session = db.Session(bind=bind)
+
+    slices = session.query(Slice).filter(Slice.viz_type == "pivot_table_v2").all()
+    for slc in slices:
+        try:
+            params = json.loads(slc.params)
+            legacy_order_by = params.pop("legacy_order_by", None)
+            if legacy_order_by:
+                params["series_limit_metric"] = legacy_order_by
+            slc.params = json.dumps(params, sort_keys=True)
+        except Exception as e:
+            logger.exception(
+                f"An error occurred: parsing params for slice {slc.id} failed."
+                f"You need to fix it before upgrading your DB."
+            )
+            raise e
+
+    session.commit()
+    session.close()
+
+
+def downgrade():
+    bind = op.get_bind()
+    session = db.Session(bind=bind)
+
+    slices = session.query(Slice).filter(Slice.viz_type == "pivot_table_v2").all()
+    for slc in slices:
+        try:
+            params = json.loads(slc.params)
+            series_limit_metric = params.pop("series_limit_metric", None)
+            if series_limit_metric:
+                params["legacy_order_by"] = series_limit_metric
+            slc.params = json.dumps(params, sort_keys=True)
+        except Exception as e:
+            logger.exception(
+                f"An error occurred: parsing params for slice {slc.id} failed. "
+                "You need to fix it before downgrading your DB."
+            )
+            raise e
+
+    session.commit()
+    session.close()