Add high resolution metrics support to CloudWatch output (#6689)

plugins/outputs/cloudwatch/cloudwatch_test.go

@@ -75,11 +75,11 @@ func TestBuildMetricDatums(t *testing.T) {
 		testutil.TestMetric(float64(1.174272e+108)), // largest should be 1.174271e+108
 	}
 	for _, point := range validMetrics {
-		datums := BuildMetricDatum(false, point)
+		datums := BuildMetricDatum(false, false, point)
 		assert.Equal(1, len(datums), fmt.Sprintf("Valid point should create a Datum {value: %v}", point))
 	}
 	for _, point := range invalidMetrics {
-		datums := BuildMetricDatum(false, point)
+		datums := BuildMetricDatum(false, false, point)
 		assert.Equal(0, len(datums), fmt.Sprintf("Valid point should not create a Datum {value: %v}", point))
 	}
 
@@ -89,7 +89,7 @@ func TestBuildMetricDatums(t *testing.T) {
 		map[string]interface{}{"value_max": float64(10), "value_min": float64(0), "value_sum": float64(100), "value_count": float64(20)},
 		time.Date(2009, time.November, 10, 23, 0, 0, 0, time.UTC),
 	)
-	datums := BuildMetricDatum(true, statisticMetric)
+	datums := BuildMetricDatum(true, false, statisticMetric)
 	assert.Equal(1, len(datums), fmt.Sprintf("Valid point should create a Datum {value: %v}", statisticMetric))
 
 	multiFieldsMetric, _ := metric.New(
@@ -98,7 +98,7 @@ func TestBuildMetricDatums(t *testing.T) {
 		map[string]interface{}{"valueA": float64(10), "valueB": float64(0), "valueC": float64(100), "valueD": float64(20)},
 		time.Date(2009, time.November, 10, 23, 0, 0, 0, time.UTC),
 	)
-	datums = BuildMetricDatum(true, multiFieldsMetric)
+	datums = BuildMetricDatum(true, false, multiFieldsMetric)
 	assert.Equal(4, len(datums), fmt.Sprintf("Each field should create a Datum {value: %v}", multiFieldsMetric))
 
 	multiStatisticMetric, _ := metric.New(
@@ -112,10 +112,27 @@ func TestBuildMetricDatums(t *testing.T) {
 		},
 		time.Date(2009, time.November, 10, 23, 0, 0, 0, time.UTC),
 	)
-	datums = BuildMetricDatum(true, multiStatisticMetric)
+	datums = BuildMetricDatum(true, false, multiStatisticMetric)
 	assert.Equal(7, len(datums), fmt.Sprintf("Valid point should create a Datum {value: %v}", multiStatisticMetric))
 }
 
+func TestMetricDatumResolution(t *testing.T) {
+	const expectedStandardResolutionValue = int64(60)
+	const expectedHighResolutionValue = int64(1)
+
+	assert := assert.New(t)
+
+	metric := testutil.TestMetric(1)
+
+	standardResolutionDatum := BuildMetricDatum(false, false, metric)
+	actualStandardResolutionValue := *standardResolutionDatum[0].StorageResolution
+	assert.Equal(expectedStandardResolutionValue, actualStandardResolutionValue)
+
+	highResolutionDatum := BuildMetricDatum(false, true, metric)
+	actualHighResolutionValue := *highResolutionDatum[0].StorageResolution
+	assert.Equal(expectedHighResolutionValue, actualHighResolutionValue)
+}
+
 func TestBuildMetricDatums_SkipEmptyTags(t *testing.T) {
 	input := testutil.MustMetric(
 		"cpu",
@@ -129,7 +146,7 @@ func TestBuildMetricDatums_SkipEmptyTags(t *testing.T) {
 		time.Unix(0, 0),
 	)
 
-	datums := BuildMetricDatum(true, input)
+	datums := BuildMetricDatum(true, false, input)
 	require.Len(t, datums[0].Dimensions, 1)
 }