Re: Closing of WebClient and Response objects

[sbalustar]

HI sergey, We are upgrading CXF version 2.7.7 to 3.1.8 and facing the below
issue.

AUDIT:2017-08-15 11:31:11.047:localhost-startStop-1:"Caused by
javax.ws.rs.ProcessingException: java.lang.IllegalStateException: Entity is
not available
    at
org.apache.cxf.jaxrs.client.WebClient.handleResponse(WebClient.java:1141)
    at org.apache.cxf.jaxrs.client.WebClient.doResponse(WebClient.java:1110)
    at
org.apache.cxf.jaxrs.client.WebClient.doChainedInvocation(WebClient.java:1035)
    at org.apache.cxf.jaxrs.client.WebClient.doInvoke(WebClient.java:892)
    at org.apache.cxf.jaxrs.client.WebClient.doInvoke(WebClient.java:863)
    at org.apache.cxf.jaxrs.client.WebClient.invoke(WebClient.java:413)
    at
com.walmart.platform.soa.client.RestClient.invoke(RestClient.java:261)
 ... 78 more

I have gone through this ticket
https://issues.apache.org/jira/browse/CXF-5144 which you mentioned that Set
this property: "response.stream.auto.close" to true. This is done even
though we are getting the same issue.

When i debug the code, in WebClient.invoke method this exception is occured.

  protected Response handleResponse(Message outMessage, Class<?>
responseClass, Type genericType) {
        try {
            ResponseBuilder rb = setResponseBuilder(outMessage,
outMessage.getExchange());
            Response currentResponse = rb.clone().build();
            ((ResponseImpl)currentResponse).setOutMessage(outMessage);
            
            Object entity = readBody(currentResponse, outMessage,
responseClass, genericType,
                                     new Annotation[]{});
            
            if (entity == null) {
                int status = currentResponse.getStatus();
                if (status >= 400) {
                    entity = currentResponse.getEntity();
                }
            }
            rb = JAXRSUtils.fromResponse(currentResponse);
            
            rb.entity(entity instanceof Response 
                      ? ((Response)entity).getEntity() : entity);
            
            Response r = rb.build();
            getState().setResponse(r);
            ((ResponseImpl)r).setOutMessage(outMessage);
            return r;
        } catch (Throwable ex) {
            throw (ex instanceof ProcessingException) ?
(ProcessingException)ex
                                                  : new
ProcessingException(ex);
        } finally {
           
ClientProviderFactory.getInstance(outMessage).clearThreadLocalProxies();
        }
    }


  public static ResponseBuilder fromResponse(Response response) {
        ResponseBuilder rb = toResponseBuilder(response.getStatus());
*        rb.entity(response.getEntity());
*        for (Map.Entry<String, List&lt;Object>> entry :
response.getMetadata().entrySet()) {
            List values = entry.getValue();
            for (Object value : values) {
                rb.header(entry.getKey(), value);
            }
        }
        return rb;
    }

* rb.entity(response.getEntity());
* seems like , entity is null in ResponseBuilder rb from the fromResponse
method.

Please let me know, what could be the solution to fix this issue?



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