Initial pass at limiting agg types based on rollup caps

x-pack/plugins/rollup/index.js

@@ -19,6 +19,9 @@ export function rollup(kibana)  {
         'plugins/rollup/index_pattern_creation',
         'plugins/rollup/index_pattern_list',
       ],
+      visualize: [
+        'plugins/rollup/vis_type_agg_filter',
+      ],
     },
     init: function (server) {
       registerLicenseChecker(server);

x-pack/plugins/rollup/public/vis_type_agg_filter/index.js

@@ -0,0 +1,7 @@
+/*
+* Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+* or more contributor license agreements. Licensed under the Elastic License;
+* you may not use this file except in compliance with the Elastic License.
+*/
+
+import './register';

x-pack/plugins/rollup/public/vis_type_agg_filter/register.js

@@ -0,0 +1,32 @@
+/*
+* Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+* or more contributor license agreements. Licensed under the Elastic License;
+* you may not use this file except in compliance with the Elastic License.
+*/
+
+import { aggTypeFilters } from 'ui/agg_types/filter';
+import { uniq } from 'lodash';
+
+/**
+ * If rollup index pattern, check its capabilities
+ * and limit available aggregations based on that.
+ */
+aggTypeFilters.addFilter(
+  (aggType, indexPattern) => {
+    if(indexPattern.type !== 'rollup') {
+      return true;
+    }
+
+    const jobs = indexPattern.typeMeta.jobs;
+    let allAggs = [];
+
+    jobs.forEach(job => {
+      const fields = indexPattern.typeMeta.capabilities[job].fields;
+      Object.keys(fields).forEach(field => {
+        allAggs = [...allAggs, ...fields[field].map(agg => agg.agg)];
+      });
+    });
+
+    return uniq(allAggs).includes(aggType.name);
+  }
+);