Dropwizard 0.8.x NewRelic Integration inspired by http://kyleboon.org/blog/2013/09/23/newrelic-for-dropwizard/

NewRelicTimedApplicationListener.java

@Singleton
@javax.ws.rs.ext.Provider
public class NewRelicTimedApplicationListener implements ApplicationEventListener {

    private Map<Method,String> methodMap = new HashMap<>();

    @Override
    public void onEvent(ApplicationEvent event) {
        if (event.getType() == ApplicationEvent.Type.INITIALIZATION_APP_FINISHED) {
            for (Resource resource : event.getResourceModel().getResources()) {
                resource.getAllMethods().forEach(this::registerUnitOfWorkAnnotations);

                for (Resource childResource : resource.getChildResources()) {
                    childResource.getAllMethods().forEach(this::registerUnitOfWorkAnnotations);
                }
            }
        }
    }

    @Override
    public RequestEventListener onRequest(RequestEvent requestEvent) {
        return new NewRelicTimedEventListener(methodMap);
    }

    private void registerUnitOfWorkAnnotations (ResourceMethod resourceMethod) {
        final Method method = resourceMethod.getInvocable().getDefinitionMethod();
        Timed annotation = method.getAnnotation(Timed.class);

        if (annotation != null) {
            final String resourceName = method.getDeclaringClass().getSimpleName();
            final String methodName = method.getName();
            this.methodMap.put(method,  resourceName + "/" + methodName);
        }
    }
}

NewRelicTimedEventListener.java

class NewRelicTimedEventListener implements RequestEventListener {

    private final Map<Method, String> methodMap;

    public NewRelicTimedEventListener(Map<Method, String> methodMap) {
        this.methodMap = methodMap;
    }

    @Override
    public void onEvent(RequestEvent event) {

        if (event.getType() == RequestEvent.Type.RESOURCE_METHOD_START) {
            Method method = event.getUriInfo().getMatchedResourceMethod().getInvocable().getDefinitionMethod();
            NewRelic.setTransactionName("dropwizard", methodMap.get(method));
        }
    }

    public Map<Method, String> getMethodMap() {
        return methodMap;
    }
}

I used
env.jersey().register(new NewRelicTimedApplicationListener());