Fix PutIndexTemplateRequest deserialization (#765)

CHANGELOG.md

@@ -18,6 +18,7 @@ Inspired from [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 ### Fixed
 - Fix partial success results for msearch_template ([#709](https://github.com/opensearch-project/opensearch-java/pull/709))
 - Fix deserialization of node stats response ([#745](https://github.com/opensearch-project/opensearch-java/pull/745))
+- Fix PutIndexTemplateRequest field deserialization ([#765](https://github.com/opensearch-project/opensearch-java/pull/765))
 
 ### Security
 

java-client/src/main/java/org/opensearch/client/opensearch/indices/PutIndexTemplateRequest.java

@@ -406,6 +406,7 @@ protected static void setupPutIndexTemplateRequestDeserializer(ObjectDeserialize
         op.add(Builder::priority, JsonpDeserializer.integerDeserializer(), "priority");
         op.add(Builder::template, IndexTemplateMapping._DESERIALIZER, "template");
         op.add(Builder::version, JsonpDeserializer.longDeserializer(), "version");
+        op.add(Builder::name, JsonpDeserializer.stringDeserializer(), "name");
 
     }
 

java-client/src/test/java/org/opensearch/client/opensearch/core/PutIndexTemplateRequestTest.java

@@ -0,0 +1,31 @@
+package org.opensearch.client.opensearch.core;
+
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import java.io.StringReader;
+import java.util.List;
+import java.util.Map;
+import org.junit.Assert;
+import org.junit.Test;
+import org.opensearch.client.json.JsonpMapper;
+import org.opensearch.client.json.jsonb.JsonbJsonpMapper;
+import org.opensearch.client.opensearch.indices.PutIndexTemplateRequest;
+
+public class PutIndexTemplateRequestTest extends Assert {
+
+    @Test
+    public void deserialize_validFieldsIncluded_RequestIsBuilt() throws JsonProcessingException {
+        final JsonpMapper mapper = new JsonbJsonpMapper();
+        final Map<String, Object> indexTemplateMap = Map.of("name", "test", "index_patterns", "*", "create", true, "priority", 1);
+
+        final String indexTemplate = new ObjectMapper().writeValueAsString(indexTemplateMap);
+        final var parser = mapper.jsonProvider().createParser(new StringReader(indexTemplate));
+
+        final PutIndexTemplateRequest putIndexTemplateRequest = PutIndexTemplateRequest._DESERIALIZER.deserialize(parser, mapper);
+
+        assertEquals(putIndexTemplateRequest.name(), "test");
+        assertEquals(putIndexTemplateRequest.indexPatterns(), List.of("*"));
+        assertEquals((int) putIndexTemplateRequest.priority(), 1);
+    }
+
+}