org.asmatron.messengine.engines.support.RequestMethodHandler Maven / Gradle / Ivy

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package org.asmatron.messengine.engines.support;

import java.lang.reflect.Method;
import java.util.logging.Level;
import java.util.logging.Logger;

import org.asmatron.messengine.action.ActionHandler;
import org.asmatron.messengine.action.RequestAction;
import org.asmatron.messengine.util.MethodInvoker;

public class RequestMethodHandler extends MethodInvoker implements ActionHandler> {

  private final static Logger log = Logger.getLogger(RequestMethodHandler.class.getName());

  public RequestMethodHandler(Object object, Method method) {
    super(object, method);
    if (method.getParameterTypes().length > 1) {
      throw new IllegalMethodException("Illegal Engine binding on: " + object.getClass().getName() + "."
              + method.getName());
    }
  }

  @Override
  public void handle(RequestAction requestAction) {
    Object responseValue = null;
    RuntimeException callError = null;
    try {
      Object requestValue = requestAction.getValue();
      responseValue = invoke(requestValue);
    } catch (RuntimeException e) {
      callError = e;
    } catch (Exception e) {
      callError = new RuntimeException(e.getMessage(), e);
    }
    try {
      requestAction.getCallback().onResponse(responseValue);
    } catch (Exception e) {
      log.log(Level.SEVERE, e.getMessage(), e);
    }
    if (callError != null) {
      throw callError;
    }
  }

}