tree 1e45c148d19a59a561df430a1f4ba3728196d910
parent 893b348890781dba2603ead61cf6f724350d0b47
author Brad Bishop <bradleyb@fuzziesquirrel.com> 1495330958 -0400
committer Brad Bishop <bradleyb@fuzziesquirrel.com> 1497904004 -0400

Add support for callbacks

Callbacks are the response in the PDM 'trigger->response' model.
Add general support for implementing callbacks and implement
a log to systemd journal using that framework.

Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
Change-Id: I8bead5368ee5472a02b47e8bba9e9df3a1f346bc