juju/juju — pull request #399 by binary132 (2014-07-24 18:27:13+00:00)
Title: action-get in jujuc

Hooks can now run the command action-get to retrieve the map of params
passed with the action hook. In the case of a nil params map, an empty
value will be passed. Format for the command is as follows:

action-get [--output=] [key[.inner.value...]]

In the case of a nonexistent key, a nil interface will be returned to
the command Stdout writer, which will display it as an empty string or
null in the case of JSON output.