Scaler fails only when failing to get counts from all the interceptor endpoints

CHANGELOG.md

@@ -15,6 +15,7 @@ This changelog keeps track of work items that have been completed and are ready
 - [v0.5.0](#v050)
 
 ## Unreleased
+Scaler fails only when failing to get counts from all the interceptor endpoints.
 
 ### Breaking Changes
 - **General**: TODO ([#TODO](https://github.com/kedacore/http-add-on/issues/TODO))

pkg/queue/queue_rpc.go

@@ -65,7 +65,10 @@ func GetCounts(
 	interceptorURL.Path = countsPath
 	resp, err := httpCl.Get(interceptorURL.String())
 	if err != nil {
-		return nil, fmt.Errorf("requesting the queue counts from %s: %w", interceptorURL.String(), err)
+		m := &Counts{
+			Counts: map[string]int{"all failed": 0},
+		}
+		return m, nil
 	}
 	defer resp.Body.Close()
 	counts := NewCounts()

scaler/queue_pinger.go

@@ -254,5 +254,11 @@ func fetchCounts(
 		}
 	}
 
+	// if fetch all failed, throw error
+	// if any fetch succeeded, return counts from them
+	if _, found := totalCounts["all failed"]; found && len(totalCounts) == 1 {
+		return nil, 0, fmt.Errorf("fetching all counts failed, cannot reach any of the endpoints")
+	}
+
 	return totalCounts, agg, nil
 }