Authorization in dropwizard

I want to make an small application using dropwizard in 0.8.0-rc3-SNAPSHOT. In that I want if any user will call my api user should pass an authtoken in the header part.What I have done till now is---

@Override
public void run(HelloWorldConfigurationhelloWorldConfiguration,Environment environment) throws Exception{
environment.jersey().register(new ViewResource());      
environment.servlets().addFilter("MyCustomRequestFilter", new MyCustomRequestFilter())
            .addMappingForUrlPatterns(EnumSet.of(DispatcherType.REQUEST),false, "/*");
}

public class MyCustomRequestFilter implements ContainerRequestFilter {
@Override
public ContainerRequest filter(ContainerRequest request) {
    System.out.print("test");
    if ( request.getQueryParameters().containsKey("validateMeParam") ) {
              /* validation logic */
    }
    // finished validation
    return request;
}
}

I don't know what I am doing wrong.It's not working.