Chore: Add last downsampling function to Resample expression (#57379)

2022-10-21 10:03:43 -04:00
parent cd0e0fcc53
commit 245c1ee3d3
3 changed files with 37 additions and 0 deletions
@@ -54,6 +54,8 @@ func (s Series) Resample(refID string, interval time.Duration, downsampler strin
 			default:
 				return s, fmt.Errorf("upsampling %v not implemented", upsampler)
 			}
+		} else if len(vals) == 1 {
+			value = vals[0]
 		} else { // downsampling
 			fVec := data.NewField("", s.GetLabels(), vals)
 			ff := Float64Field(*fVec)
@@ -67,6 +69,8 @@ func (s Series) Resample(refID string, interval time.Duration, downsampler strin
 				tmp = Min(&ff)
 			case "max":
 				tmp = Max(&ff)
+			case "last":
+				tmp = Last(&ff)
 			default:
 				return s, fmt.Errorf("downsampling %v not implemented", downsampler)
 			}