using phosphor-dbus-monitor

[Lei YU]

> I am trying to use phosphor-dbus-monitor to create logging of sensor exceptions like a Critical state on a specific sensor.
> I am able to create a solution with a building yaml but at the end it doesn’t deliver me the desired result.
> As there are very limited examples (on a few in the witherspoon) it is very hard to figure out where the mistake is.

There is an example yaml config in the repo:
https://github.com/openbmc/phosphor-dbus-monitor/blob/master/src/example/example.yaml

And I have the same feeling that it's hard to know what's wrong if
something is wrong.

> Are there any tools that can be used to make this easier?

@Matthew Barth Could you kindly help to add some doc/tool to make it
easier to use?

> Additionally is this the correct method to achieve this goal or should I use something else to define conditions for logging?

I think so. This repo is intended to watch the dbus and do stuff as yaml config.