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JAX-WS Asynchronous

No changes to be made to server code. It is the client that acts asynchronous.

I used a standalone WS client to test it.

System.out.println("Client calling WS");
CalculatorSOAPProxy proxy = new CalculatorSOAPProxy();
proxy._getDescriptor().setEndpoint(
        "http://localhost:9089/WS2Server/Calculator");
CalcRequestType in = new CalcRequestType();
in.setOperand1(5);
in.setOperand2(10);
in.setOperation(OperationType.ADD);
/**
 * Using a polling model
 */

Response response = proxy.calculateAsync(in);
System.out.println("Checking result");

while (!response.isDone()) {
    // You can do some work that does not depend on the webservice
    System.out.println("isDone? " + response.isDone());
    Thread.sleep(1000);
    
}
CalculateResponse result = response.get();
System.out.println(result.getOut());

Client calling WS
Checking result
isDone? false
isDone? false
isDone? false
isDone? false
isDone? false
isDone? false
isDone? false
isDone? false
isDone? false
15

System.out.println("Client calling WS");
CalculatorSOAPProxy proxy = new CalculatorSOAPProxy();
proxy._getDescriptor().setEndpoint(
        "http://localhost:9089/WS2Server/Calculator");
CalcRequestType in = new CalcRequestType();
in.setOperand1(5);
in.setOperand2(10);
in.setOperation(OperationType.ADD);
/**
 * Using the callback model
 */

ResponseCallBackHandler handler = new ResponseCallBackHandler();
Future response = proxy.calculateAsync(in, handler);
while(!response.isDone()){
    System.out.println("isDone? "+response.isDone());
    Thread.sleep(1000);
}
System.out.println(handler.getCalResult());

import java.util.concurrent.ExecutionException;
import javax.xml.ws.AsyncHandler;
import javax.xml.ws.Response;
import com.server.calculator.CalculateResponse;

public class ResponseCallBackHandler implements
AsyncHandler {
 
 private String calResult;
 
 @Override
 public void handleResponse(Response res) {
  System.out.println("Handler invoked");
  try {
   CalculateResponse response = res.get();
   calResult = response.getOut();
   
  } catch (InterruptedException e) {
   e.printStackTrace();
  } catch (ExecutionException e) {
   e.printStackTrace();
  }
  
  
 }

 public void setCalResult(String calResult) {
  this.calResult = calResult;
 }

 public String getCalResult() {
  return calResult;
 }
}

Output logs:

Client calling WS
isDone? false
isDone? false
isDone? false
isDone? false
isDone? false
isDone? false
isDone? false
isDone? false
isDone? false
Handler invoked
15


public class TestServlet extends HttpServlet {
 private static final long serialVersionUID = 1L;

 public TestServlet() {
  super();
 }

 protected void doGet(HttpServletRequest request,
   HttpServletResponse response) throws ServletException, IOException {
  System.out.println("Client calling WS");

  CalculatorSOAPProxy proxy = new CalculatorSOAPProxy();
  proxy._getDescriptor().setEndpoint(
    "http://localhost:9089/WS2Server/Calculator");
  BindingProvider bp = (BindingProvider) proxy._getDescriptor()
    .getProxy();
  bp.getResponseContext().put(
    "com.ibm.websphere.webservices.use.async.mep", Boolean.TRUE);

  CalcRequestType in = new CalcRequestType();
  in.setOperand1(5);
  in.setOperand2(10);
  in.setOperation(OperationType.ADD);
  ResponseCallBackHandler handler = new ResponseCallBackHandler();
  Future wsResponse = proxy.calculateAsync(in, handler);

  while (!wsResponse.isDone()) {
   System.out.println("isDone? " + wsResponse.isDone());
   try {
    Thread.sleep(1000);
   } catch (InterruptedException e) {
    e.printStackTrace();
   }
  }
  System.out.println(handler.getCalResult());
 }
}

[6/1/14 18:37:20:082 IST] 00000025 SystemOut O Client calling WS
[6/1/14 18:37:20:605 IST] 00000025 SystemOut O isDone? false
[6/1/14 18:37:20:644 IST] 00000070 WSChannelFram A CHFW0019I: The Transport Channel Service has started chain HttpOutboundChain:localhost:9089.
[6/1/14 18:37:20:729 IST] 00000024 SystemOut O 5
[6/1/14 18:37:20:730 IST] 00000024 SystemOut O 10
[6/1/14 18:37:20:730 IST] 00000024 SystemOut O ADD
[6/1/14 18:37:21:605 IST] 00000025 SystemOut O isDone? false
[6/1/14 18:37:22:605 IST] 00000025 SystemOut O isDone? false
[6/1/14 18:37:23:605 IST] 00000025 SystemOut O isDone? false
[6/1/14 18:37:24:605 IST] 00000025 SystemOut O isDone? false
[6/1/14 18:37:25:605 IST] 00000025 SystemOut O isDone? false
[6/1/14 18:37:26:605 IST] 00000025 SystemOut O isDone? false
[6/1/14 18:37:27:605 IST] 00000025 SystemOut O isDone? false
[6/1/14 18:37:28:605 IST] 00000025 SystemOut O isDone? false
[6/1/14 18:37:28:762 IST] 00000071 SystemOut O Handler invoked
[6/1/14 18:37:29:605 IST] 00000025 SystemOut O 15

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