Add index range selection

pkg/api/aim/api/request/run.go

@@ -144,6 +144,16 @@ func (req SearchArtifactsRequest) RecordRangeMax() int {
 	return rangeMax(req.RecordRange)
 }
 
+// IndexRangeMin returns the low end of the index range.
+func (req SearchArtifactsRequest) IndexRangeMin() int {
+	return rangeMin(req.IndexRange)
+}
+
+// IndexRangeMax returns the high end of the index range.
+func (req SearchArtifactsRequest) IndexRangeMax() int {
+	return rangeMax(req.IndexRange)
+}
+
 // rangeMin will extract the lower end of a range string in the request.
 func rangeMin(r string) int {
 	rangeVals := strings.Split(r, ":")

pkg/api/aim/dao/repositories/artifact.go

@@ -118,8 +118,13 @@ func (r ArtifactRepository) Search(
 			FROM artifacts
 			WHERE run_uuid IN (?)
 			AND step BETWEEN ? AND ?
+                        AND "index" BETWEEN ? AND ?
 			GROUP BY run_uuid, name, step;`,
-			runIDs, req.RecordRangeMin(), req.RecordRangeMax()).
+			runIDs,
+			req.RecordRangeMin(),
+			req.RecordRangeMax(),
+			req.IndexRangeMin(),
+			req.IndexRangeMax()).
 		Find(&stepInfo); tx.Error != nil {
 		return nil, nil, nil, eris.Wrap(err, "error find result summary for artifact search")
 	}