Final big refactoring of serial console code, to completely detach it
from SSHHost. Moves a bunch of abstract methods up into the base
Host class since they aren't SSHHost specific. Separates SSHHost and
SerialHost so that they don't inherit from one another.
Adds support for proactively checking if a host supports serial
access, and uses that in the create_host factory to mix in SerialHost
with the SSHHost so long as the machine supports serial access.
This should make it fairly easy to add in alternative net console or
dmesg support, as fallback mixins if the serial console is not
available.
Risk: Medium
Visibility: Code using hosts.create_host to build up host objects
should still get back something that provides the same basic features
as before. Code that explicitly creates an SSHHost will now no longer
get any serial console support.
Signed-off-by: John Admanski <jadmanski@google.com>
git-svn-id: http://test.kernel.org/svn/autotest/trunk@2032 592f7852-d20e-0410-864c-8624ca9c26a4
5 files changed