add default keys

rule-engine/rule-engine-components/src/main/java/org/thingsboard/rule/engine/transform/TbRenameKeysNode.java

@@ -38,8 +38,8 @@ import java.util.concurrent.ExecutionException;
         name = "rename keys",
         configClazz = TbRenameKeysNodeConfiguration.class,
         nodeDescription = "Renames msg data or metadata keys to the new key names selected in the key mapping.",
-        nodeDetails = "If the key that is selected in the key mapping is missed in the msg data or metadata, it will be ignored." +
-                "If the msg data is not a JSON object returns the incoming message as outbound message with <code>Failure</code> chain," +
+        nodeDetails = "If the key that is selected in the key mapping is missed in the selected msg source(data or metadata), it will be ignored." +
+                " If the msg data is not a JSON object returns the incoming message as outbound message with <code>Failure</code> chain," +
                 " otherwise returns transformed messages via <code>Success</code> chain",
         uiResources = {"static/rulenode/rulenode-core-config.js"},
         configDirective = "tbTransformationNodeRenameKeysConfig",

rule-engine/rule-engine-components/src/main/java/org/thingsboard/rule/engine/transform/TbRenameKeysNodeConfiguration.java

@@ -30,7 +30,7 @@ public class TbRenameKeysNodeConfiguration implements NodeConfiguration<TbRename
     @Override
     public TbRenameKeysNodeConfiguration defaultConfiguration() {
         TbRenameKeysNodeConfiguration configuration = new TbRenameKeysNodeConfiguration();
-        configuration.setRenameKeysMapping(Collections.emptyMap());
+        configuration.setRenameKeysMapping(Map.of("temp", "temperature"));
         configuration.setFromMetadata(false);
         return configuration;
     }

rule-engine/rule-engine-components/src/test/java/org/thingsboard/rule/engine/transform/TbRenameKeysNodeTest.java

@@ -75,7 +75,7 @@ public class TbRenameKeysNodeTest {
     @Test
     void givenDefaultConfig_whenVerify_thenOK() {
         TbRenameKeysNodeConfiguration defaultConfig = new TbRenameKeysNodeConfiguration().defaultConfiguration();
-        assertThat(defaultConfig.getRenameKeysMapping()).isEqualTo(Collections.emptyMap());
+        assertThat(defaultConfig.getRenameKeysMapping()).isEqualTo(Map.of("temp", "temperature"));
         assertThat(defaultConfig.isFromMetadata()).isEqualTo(false);
     }