Cloudwatch: Set time zone offset in GMD request (#48772)

* set timezone offset in case feature is enabled

* add unit tests

* add unit tests

* remove unused import

pkg/tsdb/cloudwatch/cloudwatch_query.go

@@ -24,6 +24,7 @@ type cloudWatchQuery struct {
 	Label             string
 	MatchExact        bool
 	UsedExpression    string
+	TimezoneUTCOffset string
 	MetricQueryType   metricQueryType
 	MetricEditorMode  metricEditorMode
 }

pkg/tsdb/cloudwatch/metric_data_input_builder.go

@@ -5,6 +5,7 @@ import (
 
 	"github.com/aws/aws-sdk-go/aws"
 	"github.com/aws/aws-sdk-go/service/cloudwatch"
+	"github.com/grafana/grafana/pkg/services/featuremgmt"
 )
 
 func (e *cloudWatchExecutor) buildMetricDataInput(startTime time.Time, endTime time.Time,
@@ -14,6 +15,15 @@ func (e *cloudWatchExecutor) buildMetricDataInput(startTime time.Time, endTime t
 		EndTime:   aws.Time(endTime),
 		ScanBy:    aws.String("TimestampAscending"),
 	}
+
+	shouldSetLabelOptions := e.features.IsEnabled(featuremgmt.FlagCloudWatchDynamicLabels) && len(queries) > 0 && len(queries[0].TimezoneUTCOffset) > 0
+
+	if shouldSetLabelOptions {
+		metricDataInput.LabelOptions = &cloudwatch.LabelOptions{
+			Timezone: aws.String(queries[0].TimezoneUTCOffset),
+		}
+	}
+
 	for _, query := range queries {
 		metricDataQuery, err := e.buildMetricDataQuery(query)
 		if err != nil {

pkg/tsdb/cloudwatch/metric_data_input_builder_test.go

@@ -0,0 +1,44 @@
+package cloudwatch
+
+import (
+	"testing"
+	"time"
+
+	"github.com/aws/aws-sdk-go/aws"
+	"github.com/aws/aws-sdk-go/service/cloudwatch"
+	"github.com/grafana/grafana/pkg/services/featuremgmt"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestMetricDataInputBuilder(t *testing.T) {
+	now := time.Now()
+
+	tests := []struct {
+		name                 string
+		timezoneUTCOffset    string
+		expectedLabelOptions *cloudwatch.LabelOptions
+		featureEnabled       bool
+	}{
+		{name: "when timezoneUTCOffset is provided and feature is enabled", timezoneUTCOffset: "+1234", expectedLabelOptions: &cloudwatch.LabelOptions{Timezone: aws.String("+1234")}, featureEnabled: true},
+		{name: "when timezoneUTCOffset is not provided and feature is enabled", timezoneUTCOffset: "", expectedLabelOptions: nil, featureEnabled: true},
+		{name: "when timezoneUTCOffset is provided and feature is disabled", timezoneUTCOffset: "+1234", expectedLabelOptions: nil, featureEnabled: false},
+		{name: "when timezoneUTCOffset is not provided and feature is disabled", timezoneUTCOffset: "", expectedLabelOptions: nil, featureEnabled: false},
+	}
+
+	for _, tc := range tests {
+		t.Run(tc.name, func(t *testing.T) {
+			executor := newExecutor(nil, newTestConfig(), &fakeSessionCache{}, featuremgmt.WithFeatures(featuremgmt.FlagCloudWatchDynamicLabels, tc.featureEnabled))
+			query := getBaseQuery()
+			query.TimezoneUTCOffset = tc.timezoneUTCOffset
+
+			from := now.Add(time.Hour * -2)
+			to := now.Add(time.Hour * -1)
+			mdi, err := executor.buildMetricDataInput(from, to, []*cloudWatchQuery{query})
+
+			assert.NoError(t, err)
+			require.NotNil(t, mdi)
+			assert.Equal(t, tc.expectedLabelOptions, mdi.LabelOptions)
+		})
+	}
+}

pkg/tsdb/cloudwatch/request_parser.go

@@ -201,6 +201,8 @@ func parseRequestQuery(model *simplejson.Json, refId string, startTime time.Time
 	label := model.Get("label").MustString()
 	returnData := !model.Get("hide").MustBool(false)
 	queryType := model.Get("type").MustString()
+	timezoneUTCOffset := model.Get("timezoneUTCOffset").MustString("")
+
 	if queryType == "" {
 		// If no type is provided we assume we are called by alerting service, which requires to return data!
 		// Note, this is sort of a hack, but the official Grafana interfaces do not carry the information
@@ -238,6 +240,7 @@ func parseRequestQuery(model *simplejson.Json, refId string, startTime time.Time
 		MetricQueryType:   metricQueryType,
 		MetricEditorMode:  metricEditorModeValue,
 		SqlExpression:     sqlExpression,
+		TimezoneUTCOffset: timezoneUTCOffset,
 	}, nil
 }
 

public/app/plugins/datasource/cloudwatch/datasource.test.ts

@@ -399,6 +399,50 @@ describe('datasource', () => {
     });
   });
 
+  describe('timezoneUTCOffset', () => {
+    const testQuery = {
+      id: '',
+      refId: 'a',
+      region: 'us-east-2',
+      namespace: '',
+      period: '',
+      label: '${MAX_TIME_RELATIVE}',
+      metricName: '',
+      dimensions: {},
+      matchExact: true,
+      statistic: '',
+      expression: '',
+      metricQueryType: MetricQueryType.Query,
+      metricEditorMode: MetricEditorMode.Code,
+      sqlExpression: 'SELECT SUM($metric) FROM "$namespace" GROUP BY ${labels:raw} LIMIT $limit',
+    };
+    const testTable = [
+      ['Europe/Stockholm', '+0200'],
+      ['America/New_York', '-0400'],
+      ['Asia/Tokyo', '+0900'],
+      ['UTC', '+0000'],
+    ];
+    describe.each(testTable)('should use the right time zone offset', (ianaTimezone, expectedOffset) => {
+      const { datasource, fetchMock } = setupMockedDataSource();
+      datasource.handleMetricQueries([testQuery], {
+        range: { from: dateTime(), to: dateTime() },
+        timezone: ianaTimezone,
+      } as any);
+
+      expect(fetchMock).toHaveBeenCalledWith(
+        expect.objectContaining({
+          data: expect.objectContaining({
+            queries: expect.arrayContaining([
+              expect.objectContaining({
+                timezoneUTCOffset: expectedOffset,
+              }),
+            ]),
+          }),
+        })
+      );
+    });
+  });
+
   describe('convertMultiFiltersFormat', () => {
     const ds = setupMockedDataSource({ variables: [labelsVariable, dimensionVariable], mockGetVariableName: false });
     it('converts keys and values correctly', () => {

public/app/plugins/datasource/cloudwatch/datasource.ts

@@ -12,6 +12,7 @@ import {
   DataSourceInstanceSettings,
   DataSourceWithLogsContextSupport,
   dateMath,
+  dateTimeFormat,
   FieldType,
   LoadingState,
   LogRowModel,
@@ -22,6 +23,7 @@ import {
 import { DataSourceWithBackend, FetchError, getBackendSrv, toDataQueryResponse } from '@grafana/runtime';
 import { RowContextOptions } from '@grafana/ui/src/components/Logs/LogRowContextProvider';
 import { notifyApp } from 'app/core/actions';
+import { config } from 'app/core/config';
 import { createErrorNotification } from 'app/core/copy/appNotification';
 import { getTimeSrv, TimeSrv } from 'app/features/dashboard/services/TimeSrv';
 import { getTemplateSrv, TemplateSrv } from 'app/features/templating/template_srv';
@@ -29,8 +31,6 @@ import { VariableWithMultiSupport } from 'app/features/variables/types';
 import { store } from 'app/store/store';
 import { AppNotificationTimeout } from 'app/types';
 
-import config from '../../../core/config';
-
 import { CloudWatchAnnotationSupport } from './annotationSupport';
 import { SQLCompletionItemProvider } from './cloudwatch-sql/completion/CompletionItemProvider';
 import { ThrottlingErrorMessage } from './components/ThrottlingErrorMessage';
@@ -290,11 +290,17 @@ export class CloudWatchDatasource
     metricQueries: CloudWatchMetricsQuery[],
     options: DataQueryRequest<CloudWatchQuery>
   ): Observable<DataQueryResponse> => {
+    const timezoneUTCOffset = dateTimeFormat(Date.now(), {
+      timeZone: options.timezone,
+      format: 'Z',
+    }).replace(':', '');
+
     const validMetricsQueries = metricQueries.filter(this.filterQuery).map((q: CloudWatchMetricsQuery): MetricQuery => {
       const migratedQuery = migrateMetricQuery(q);
       const migratedAndIterpolatedQuery = this.replaceMetricQueryVars(migratedQuery, options);
 
       return {
+        timezoneUTCOffset,
         intervalMs: options.intervalMs,
         maxDataPoints: options.maxDataPoints,
         ...migratedAndIterpolatedQuery,