From cc05bcc39530041b2dcdfde4effae8f4a24d5d23 Mon Sep 17 00:00:00 2001
From: John Mazanec <jmazane@amazon.com>
Date: Wed, 9 Mar 2022 11:36:26 -0800
Subject: [PATCH] Add default for EnginePlugin.getEngineFactory

Adds default implementation for getEngineFactory in EnginePlugin. The
default just returns Optional.empty(), allowing plugin developers to
implement this plugin without implementing this method.

Signed-off-by: John Mazanec <jmazane@amazon.com>
---
 server/src/main/java/org/opensearch/plugins/EnginePlugin.java | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/server/src/main/java/org/opensearch/plugins/EnginePlugin.java b/server/src/main/java/org/opensearch/plugins/EnginePlugin.java
index 4c3a07d7b98d9..31844dbdaec2b 100644
--- a/server/src/main/java/org/opensearch/plugins/EnginePlugin.java
+++ b/server/src/main/java/org/opensearch/plugins/EnginePlugin.java
@@ -56,7 +56,9 @@ public interface EnginePlugin {
      *
      * @return an optional engine factory
      */
-    Optional<EngineFactory> getEngineFactory(IndexSettings indexSettings);
+    default Optional<EngineFactory> getEngineFactory(IndexSettings indexSettings) {
+        return Optional.empty();
+    }
 
     /**
      * EXPERT: