Using Guice for Dependency Injection with GAE Basic Scaling Instance - google-app-engine

Question

I have an application running on GAE (Basic Scaling) which uses Guice for dependency injection.
Guice Listener
public class GuiceListener extends GuiceServletContextListener {
private ServletContext servletContext = null;
#Override
public void contextInitialized(ServletContextEvent servletContextEvent) {
servletContext = servletContextEvent.getServletContext();
super.contextInitialized(servletContextEvent);
}
/**
* Function to create Guice Injector
*/
#Override
protected Injector getInjector() {
return Guice.createInjector(
new GuiceServletModule(),
new ServiceInjectionModule()
);
}
}
Guice Servlet Module
public class GuiceServletModule extends GuiceSystemServiceServletModule {
#Override
protected void configureServlets() {
super.configureServlets();
Logger.info("Guice configure servelet");
filter("/*").through(NamespaceFilterCustom.class);
Map<String, String> params = new HashMap<>();
params.put(PackagesResourceConfig.PROPERTY_PACKAGES, "com.my.service.endpoint");
params.put("com.sun.jersey.api.json.POJOMappingFeature", "true");
//you can create your own filters to handle request and response differently
params.put(ResourceConfig.PROPERTY_CONTAINER_REQUEST_FILTERS, GZIPContentEncodingFilter.class.getName());
params.put(ResourceConfig.PROPERTY_CONTAINER_RESPONSE_FILTERS, GZIPContentEncodingFilter.class.getName());
serve("/*").with(GuiceContainer.class, params);
}
}
Service Injection Module
public class ServiceInjectionModule extends AbstractModule {
#Override
protected void configure() {
bind(Service.class).to(ServiceImpl.class);
}
}
My endpoint class expects "Service" object to be injected. The application runs fine when used with GAE Auto Scaling. However the "Service" object is not getting injected when the application runs on GAE Basic Scaling. Null pointer exception is thrown when "Service" is accessed.