[7.x] Adds time zone to date_range bucket aggregation (#37576)

src/legacy/ui/public/agg_types/__tests__/buckets/_date_range.js

@@ -0,0 +1,70 @@
+/*
+ * Licensed to Elasticsearch B.V. under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch B.V. 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.
+ */
+import { set } from 'lodash';
+import expect from '@kbn/expect';
+import sinon from 'sinon';
+import ngMock from 'ng_mock';
+import AggParamWriterProvider from '../agg_param_writer';
+import FixturesStubbedLogstashIndexPatternProvider from 'fixtures/stubbed_logstash_index_pattern';
+import chrome from '../../../chrome';
+
+const config = chrome.getUiSettingsClient();
+
+describe('date_range params', function () {
+  let paramWriter;
+  let timeField;
+
+  beforeEach(ngMock.module('kibana'));
+  beforeEach(ngMock.inject(function (Private) {
+    const AggParamWriter = Private(AggParamWriterProvider);
+    const indexPattern = Private(FixturesStubbedLogstashIndexPatternProvider);
+
+    timeField = indexPattern.timeFieldName;
+    paramWriter = new AggParamWriter({ aggType: 'date_range' });
+  }));
+  describe('time_zone', () => {
+    beforeEach(() => {
+      sinon.stub(config, 'get');
+      sinon.stub(config, 'isDefault');
+    });
+
+    it('should use the specified time_zone', () => {
+      const output = paramWriter.write({ time_zone: 'Europe/Kiev' });
+      expect(output.params).to.have.property('time_zone', 'Europe/Kiev');
+    });
+
+    it('should use the Kibana time_zone if no parameter specified', () => {
+      config.isDefault.withArgs('dateFormat:tz').returns(false);
+      config.get.withArgs('dateFormat:tz').returns('Europe/Riga');
+      const output = paramWriter.write({});
+      expect(output.params).to.have.property('time_zone', 'Europe/Riga');
+    });
+
+    it('should use the fixed time_zone from the index pattern typeMeta', () => {
+      set(paramWriter.indexPattern, ['typeMeta', 'aggs', 'date_range', timeField, 'time_zone'], 'Europe/Rome');
+      const output = paramWriter.write({ field: timeField });
+      expect(output.params).to.have.property('time_zone', 'Europe/Rome');
+    });
+
+    afterEach(() => {
+      config.get.restore();
+      config.isDefault.restore();
+    });
+  });
+});

src/legacy/ui/public/agg_types/buckets/date_range.js

@@ -16,7 +16,9 @@
  * specific language governing permissions and limitations
  * under the License.
  */
-
+import { get } from 'lodash';
+import chrome from '../../chrome';
+import moment from 'moment-timezone';
 import { dateRange } from '../../utils/date_range';
 import '../directives/validate_date_math';
 import '../directives/documentation_href';
@@ -26,6 +28,10 @@ import { fieldFormats } from '../../registry/field_formats';
 import dateRangesTemplate from '../controls/date_ranges.html';
 import { i18n } from '@kbn/i18n';
 
+const config = chrome.getUiSettingsClient();
+const detectedTimezone = moment.tz.guess();
+const tzOffset = moment().format('Z');
+
 export const dateRangeBucketAgg = new BucketAggType({
   name: 'date_range',
   title: i18n.translate('common.ui.aggTypes.buckets.dateRangeTitle', {
@@ -56,5 +62,21 @@ export const dateRangeBucketAgg = new BucketAggType({
       to: 'now'
     }],
     editor: dateRangesTemplate
+  }, {
+    name: 'time_zone',
+    default: undefined,
+    // Implimentation method is the same as that of date_histogram
+    serialize: () => undefined,
+    write: (agg, output) => {
+      let tz = agg.params.time_zone;
+      if (!tz && agg.params.field) {
+        tz = get(agg.getIndexPattern(), ['typeMeta', 'aggs', 'date_range', agg.params.field.name, 'time_zone']);
+      }
+      if (!tz) {
+        const isDefaultTimezone = config.isDefault('dateFormat:tz');
+        tz = isDefaultTimezone ? detectedTimezone || tzOffset : config.get('dateFormat:tz');
+      }
+      output.params.time_zone = tz;
+    }
   }]
 });