Add use_int_samples option for backwards compatibility (#5563)

plugins/inputs/vsphere/endpoint.go

@@ -5,6 +5,7 @@ import (
 	"errors"
 	"fmt"
 	"log"
+	"math"
 	"math/rand"
 	"net/url"
 	"regexp"
@@ -948,7 +949,7 @@ func (e *Endpoint) collectChunk(ctx context.Context, pqs []types.PerfQuerySpec,
 			e.populateTags(&objectRef, resourceType, res, t, &v)
 
 			nValues := 0
-			alignedInfo, alignedValues := alignSamples(em.SampleInfo, v.Value, interval) // TODO: Estimate interval
+			alignedInfo, alignedValues := alignSamples(em.SampleInfo, v.Value, interval)
 
 			for idx, sample := range alignedInfo {
 				// According to the docs, SampleInfo and Value should have the same length, but we've seen corrupted
@@ -981,7 +982,11 @@ func (e *Endpoint) collectChunk(ctx context.Context, pqs []types.PerfQuerySpec,
 				if info.UnitInfo.GetElementDescription().Key == "percent" {
 					bucket.fields[fn] = float64(v) / 100.0
 				} else {
-					bucket.fields[fn] = v
+					if e.Parent.UseIntSamples {
+						bucket.fields[fn] = int64(round(v))
+					} else {
+						bucket.fields[fn] = v
+					}
 				}
 				count++
 
@@ -1082,3 +1087,11 @@ func cleanDiskTag(disk string) string {
 	// Remove enclosing "<>"
 	return strings.TrimSuffix(strings.TrimPrefix(disk, "<"), ">")
 }
+
+func round(x float64) float64 {
+	t := math.Trunc(x)
+	if math.Abs(x-t) >= 0.5 {
+		return t + math.Copysign(1, x)
+	}
+	return t
+}