Fix PutTemplateRequest deserialization

CHANGELOG.md

@@ -22,6 +22,7 @@ This section is for maintaining a changelog for all breaking changes for the cli
 
 ### Fixed
 - Fix version and build ([#254](https://github.com/opensearch-project/opensearch-java/pull/254))
+- Fix PutTemplateRequest field deserialization ([#723](https://github.com/opensearch-project/opensearch-java/pull/723))
 
 ### Security
 

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

@@ -586,8 +586,10 @@ public PutTemplateRequest build() {
     protected static void setupPutTemplateRequestDeserializer(ObjectDeserializer<PutTemplateRequest.Builder> op) {
 
         op.add(Builder::aliases, JsonpDeserializer.stringMapDeserializer(Alias._DESERIALIZER), "aliases");
+        op.add(Builder::create, JsonpDeserializer.booleanDeserializer(), "create");
         op.add(Builder::indexPatterns, JsonpDeserializer.arrayDeserializer(JsonpDeserializer.stringDeserializer()), "index_patterns");
         op.add(Builder::mappings, TypeMapping._DESERIALIZER, "mappings");
+        op.add(Builder::name, JsonpDeserializer.stringDeserializer(), "name");
         op.add(Builder::order, JsonpDeserializer.integerDeserializer(), "order");
         op.add(Builder::settings, JsonpDeserializer.stringMapDeserializer(JsonData._DESERIALIZER), "settings");
         op.add(Builder::version, JsonpDeserializer.longDeserializer(), "version");

java-client/src/test/java/org/opensearch/client/opensearch/core/PutTemplateRequestTest.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.PutTemplateRequest;
+
+public class PutTemplateRequestTest 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, "order", 1);
+
+        final String indexTemplate = new ObjectMapper().writeValueAsString(indexTemplateMap);
+        final var parser = mapper.jsonProvider().createParser(new StringReader(indexTemplate));
+
+        final PutTemplateRequest putTemplateRequest = PutTemplateRequest._DESERIALIZER.deserialize(parser, mapper);
+
+        assertEquals(putTemplateRequest.name(), "test");
+        assertEquals(putTemplateRequest.indexPatterns(), List.of("*"));
+        assertEquals((int) putTemplateRequest.order(), 1);
+        assertEquals(putTemplateRequest.create(), true);
+    }
+}