tree 07c5fef501f5d0a1e0051b964462995e7feaf316
parent cc74e4bc83c6fdf85c15bd1ebc611a7f60ad8b8b
author Matt Spinler <spinler@us.ibm.com> 1537307129 -0500
committer Matt Spinler <spinler@us.ibm.com> 1538141093 -0500

Add full Associations support

Associations are D-Bus objects that this application
creates when another application creates an instance
of an org.openbmc.Associations interface.

For example, if an application with D-Bus path 'pathA'
creates an instance of org.openbmc.Associations with
an 'associations' property of:

['forward', 'reverse', 'pathB']

the mapper will create 2 new D-Bus objects:

1) 'pathA/forward'
2) 'pathB/reverse'

1) will have an xyz.openbmc_project.Association interface
with an 'endpoints' property that contains ['pathB']

2) will have an xyz.openbmc_project.Association interface
with an 'endpoints' property that contains ['pathA']

If pathA is removed from the bus, 1) should be completely removed,
and 2) should have 'pathA' removed from the endpoints property.
If the endpoints property in 2) is now empty, that whole
object should be removed as well.

If, when adding the xyz.openbmc_project.Association interface, it
already exists, then the endpoints property should just be added
to.

This commit finishes adding support for all of this.

Change-Id: Ib1b3d39407a4b75992664552a766e49fdb27123f
Signed-off-by: Matt Spinler <spinler@us.ibm.com>