Dynamically turning on request/response logging in jax-rs

[KARR, DAVID (ATTSI)]

I need to investigate how I can dynamically turn on request/response
logging in JAX-RS.  The doc page on logging appears to assume we're
doing JAX-WS.  It appears I can turn on logging statically by adding the
"cxf:logging" element to the "jaxrs:features" element, but that's not
what I want.