Handle different-length results more gracefully

leizor · May 6, 2024 · f2f9ae9 · f2f9ae9
1 parent a0574d7
commit f2f9ae9
Showing 1 changed file with 14 additions and 9 deletions.
diff --git a/cmd/foobar/main.go b/cmd/foobar/main.go
@@ -170,16 +170,21 @@ func checkHistogram(client remote.ReadClient, histogramBase string, hourStart ti
 		}
 	}
 
-	if len(res[0]) != len(res[1]) {
-		return -1, fmt.Errorf("result sets different lengths, %v != %v", len(res[0]), len(res[1]))
-	}
+	if len(res[0]) >= len(res[1]) {
+		for ts, v0 := range res[0] {
+			v1 := res[1][ts]
+			if v0 != v1 {
+				return ts, nil
+			}
+		}
 
-	for ts, v0 := range res[0] {
-		v1 := res[1][ts]
-		if v0 != v1 {
-			return ts, nil
+		return 0, nil
+	} else {
+		for ts, v0 := range res[1] {
+			v1 := res[0][ts]
+			if v0 != v1 {
+				return ts, nil
+			}
 		}
 	}
-
-	return 0, nil
 }