Slight refactoring of client stager - introduce step of checking if file should be transferred before transferring.
Slight refactoring of client stager - introduce step of checking if file should be transferred before transferring.

Currently all files still transfer, but the goal would be to eventually allow this transfer and rewrite to be disabled for given paths or allow only rewriting paths instead (for files mounted on both servers but in different locations).

jmchilton/lwr,ssorgatem/pulsar,jmchilton/lwr,galaxyproject/pulsar,natefoo/pulsar,natefoo/pulsar,jmchilton/pulsar,galaxyproject/pulsar,jmchilton/pulsar,ssorgatem/pulsar