From ef94468a8b21fb95e4fecabbfd953df433c670f0 Mon Sep 17 00:00:00 2001
From: Chase Engelbrecht <engechas@amazon.com>
Date: Thu, 14 Mar 2024 20:00:19 -0700
Subject: [PATCH] Revert behavior for no rules in detector

Signed-off-by: Chase Engelbrecht <engechas@amazon.com>
---
 .../transport/TransportIndexDetectorAction.java               | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/main/java/org/opensearch/securityanalytics/transport/TransportIndexDetectorAction.java b/src/main/java/org/opensearch/securityanalytics/transport/TransportIndexDetectorAction.java
index c21f7d3f8..cf9835568 100644
--- a/src/main/java/org/opensearch/securityanalytics/transport/TransportIndexDetectorAction.java
+++ b/src/main/java/org/opensearch/securityanalytics/transport/TransportIndexDetectorAction.java
@@ -274,9 +274,9 @@ private void createMonitorFromQueries(String index, List<Pair<String, Rule>> rul
                     }, listener::onFailure);
                 }, listener::onFailure);
             } else {
-                // Failure if detector doesn't have any monitor
+                // Do nothing if detector doesn't have any monitor
                 if (monitorRequests.isEmpty()) {
-                    listener.onFailure(new OpenSearchStatusException("Detector cannot be created as no compatible rules were provided", RestStatus.BAD_REQUEST));
+                    listener.onResponse(Collections.emptyList());
                     return;
                 }
                 List<IndexMonitorResponse> monitorResponses = new ArrayList<>();