tree ea7d3a4a975095e5ca17004149745d647550ca97
parent 4a2b931316dbc566c834c6d9d38639ff0fca30b8
author Matthew Barth <msbarth@us.ibm.com> 1509392975 -0500
committer Brad Bishop <bradleyb@fuzziesquirrel.com> 1519740995 +0000

wspoon: Handle dependent application fails

In addition to property changed and interface added signals, fan control
can subscribe to name owner changed signals for groups to determine
whether or not a service that provides data from that group is still
owned on the bus. This allows events to be defined within the fan
control algorithm that would react to any services it is dependent on
appropriately.

e.g.) If the service that provides either of the OCC active sensor
status fails and is no longer owned on the bus for 5 seconds, the fans
are set to full speed until the service returns or the system is powered
off.

Resolves openbmc/openbmc#2346

Change-Id: Ia681c26f5e2d6794ab2f0f4480e0902100586544
Signed-off-by: Matthew Barth <msbarth@us.ibm.com>