Get mapping request using java

shwetanb · March 28, 2023, 10:52am

I am trying to get mapping for index using opensearch java client. When I hit the request I get error as missing “Missing required property ‘Builder.’
org.opensearch.client.util.MissingRequiredPropertyException: Missing required property ‘Builder.’”.
Code is as below:

RestClient restClient = RestClient
                    .builder(new HttpHost(server, port, "http"))
                    .build();
            OpenSearchTransport transport = new RestClientTransport(restClient, new JacksonJsonpMapper());
            OpenSearchClient client = new OpenSearchClient(transport);
           
            GetMappingRequest req = new GetMappingRequest.Builder().index(indexName).build();
            GetMappingResponse getMappingResponse = client.indices().getMapping(req);

Exception I am getting is:

2023-03-28 16:20:23,066 ERROR c.t.o.s.s.i.SearchServiceImpl [http-nio-8080-exec-1] [getFieldsFromOpensearch-135] Missing required property 'Builder.<variant kind>'
org.opensearch.client.util.MissingRequiredPropertyException: Missing required property 'Builder.<variant kind>'
	at org.opensearch.client.util.ApiTypeHelper.requireNonNull(ApiTypeHelper.java:88)
	at org.opensearch.client.opensearch._types.mapping.Property.<init>(Property.java:193)
	at org.opensearch.client.opensearch._types.mapping.Property$Builder.build(Property.java:1437)
	at org.opensearch.client.json.BuildFunctionDeserializer.deserialize(BuildFunctionDeserializer.java:61)
	at org.opensearch.client.json.DelegatingDeserializer$SameType.deserialize(DelegatingDeserializer.java:56)
	at org.opensearch.client.json.ObjectDeserializer$FieldObjectDeserializer.deserialize(ObjectDeserializer.java:85)
	at org.opensearch.client.json.ObjectDeserializer.deserialize(ObjectDeserializer.java:189)
	at org.opensearch.client.json.ObjectDeserializer.deserialize(ObjectDeserializer.java:150)
	at org.opensearch.client.json.JsonpDeserializer.deserialize(JsonpDeserializer.java:88)
	at org.opensearch.client.json.ObjectBuilderDeserializer.deserialize(ObjectBuilderDeserializer.java:92)
	at org.opensearch.client.json.DelegatingDeserializer$SameType.deserialize(DelegatingDeserializer.java:56)
	at org.opensearch.client.json.JsonpDeserializerBase$StringMapDeserializer.deserialize(JsonpDeserializerBase.java:354)
	at org.opensearch.client.json.JsonpDeserializerBase$StringMapDeserializer.deserialize(JsonpDeserializerBase.java:340)
	at org.opensearch.client.json.JsonpDeserializerBase$ArrayDeserializer.deserialize(JsonpDeserializerBase.java:329)
	at org.opensearch.client.json.JsonpDeserializerBase$ArrayDeserializer.deserialize(JsonpDeserializerBase.java:298)
	at org.opensearch.client.json.JsonpDeserializer.deserialize(JsonpDeserializer.java:88)
	at org.opensearch.client.json.ObjectDeserializer$FieldObjectDeserializer.deserialize(ObjectDeserializer.java:85)
	at org.opensearch.client.json.ObjectDeserializer.deserialize(ObjectDeserializer.java:189)
	at org.opensearch.client.json.ObjectDeserializer.deserialize(ObjectDeserializer.java:150)
	at org.opensearch.client.json.JsonpDeserializer.deserialize(JsonpDeserializer.java:88)
	at org.opensearch.client.json.ObjectBuilderDeserializer.deserialize(ObjectBuilderDeserializer.java:92)
	at org.opensearch.client.json.DelegatingDeserializer$SameType.deserialize(DelegatingDeserializer.java:56)
	at org.opensearch.client.json.ObjectDeserializer$FieldObjectDeserializer.deserialize(ObjectDeserializer.java:85)
	at org.opensearch.client.json.ObjectDeserializer.deserialize(ObjectDeserializer.java:189)
	at org.opensearch.client.json.ObjectDeserializer.deserialize(ObjectDeserializer.java:150)
	at org.opensearch.client.json.JsonpDeserializer.deserialize(JsonpDeserializer.java:88)
	at org.opensearch.client.json.ObjectBuilderDeserializer.deserialize(ObjectBuilderDeserializer.java:92)
	at org.opensearch.client.json.DelegatingDeserializer$SameType.deserialize(DelegatingDeserializer.java:56)
	at org.opensearch.client.transport.endpoints.DictionaryResponse.lambda$setupDictionaryResponseDeserializer$0(DictionaryResponse.java:161)
	at org.opensearch.client.json.ObjectDeserializer.parseUnknownField(ObjectDeserializer.java:218)
	at org.opensearch.client.json.ObjectDeserializer.deserialize(ObjectDeserializer.java:187)
	at org.opensearch.client.json.ObjectDeserializer.deserialize(ObjectDeserializer.java:150)
	at org.opensearch.client.json.JsonpDeserializer.deserialize(JsonpDeserializer.java:88)
	at org.opensearch.client.json.ObjectBuilderDeserializer.deserialize(ObjectBuilderDeserializer.java:92)
	at org.opensearch.client.json.DelegatingDeserializer$SameType.deserialize(DelegatingDeserializer.java:56)
	at org.opensearch.client.transport.rest_client.RestClientTransport.decodeResponse(RestClientTransport.java:320)
	at org.opensearch.client.transport.rest_client.RestClientTransport.getHighLevelResponse(RestClientTransport.java:286)
	at org.opensearch.client.transport.rest_client.RestClientTransport.performRequest(RestClientTransport.java:143)
	at org.opensearch.client.opensearch.indices.OpenSearchIndicesClient.getMapping(OpenSearchIndicesClient.java:789)
	at com.tdg.oswrapper.search.service.impl.SearchServiceImpl.getFieldsFromOpensearch(SearchServiceImpl.java:124)
	at com.tdg.oswrapper.endpoints.SearchController.getFieldList(SearchController.java:42)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:568)
	at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:207)
	at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:152)
	at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:117)
	at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:884)
	at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:797)
	at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87)
	at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1081)
	at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:974)
	at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1011)
	at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:903)
	at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:705)
	at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:885)
	at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:814)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:223)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:158)
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:185)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:158)
	at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:185)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:158)
	at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:185)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:158)
	at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201)
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:185)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:158)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:177)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:542)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:119)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:357)
	at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:400)
	at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
	at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:859)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1734)
	at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:52)
	at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191)
	at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	at java.base/java.lang.Thread.run(Thread.java:833)

Opensearch dependencies:

<dependency>
  <groupId>org.opensearch.client</groupId>
  <artifactId>opensearch-rest-client</artifactId>
  <version>2.5.0</version>
</dependency>
<dependency>
  <groupId>org.opensearch.client</groupId>
  <artifactId>opensearch-java</artifactId>
  <version>2.0.0</version>
</dependency>

Could anyone suggest what exactly is missing here?

vachashah · March 29, 2023, 5:59pm

Hi @shwetanb, it looks like the error is occurring while parsing the response for get mapping. I tried the same and I am able to get the mappings result:

GetMappingRequest mappingsRequest = new GetMappingRequest.Builder().index(index).build();
GetMappingResponse getMappingResponse = client.indices().getMapping(mappingsRequest);
System.out.println("Mapping response: " + getMappingResponse.result().get(index));

Can you paste what your index looks like and what kind of mapping it has? It would help to further debug the issue.

system · May 28, 2023, 6:00pm

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Get mapping request using java

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