tree 368f7b7bba8659e52639eaca6ff39224815c169a
parent 85e7a9be169c79608c59259e1ea91d471e535b6a
author Brad Bishop <bradleyb@fuzziesquirrel.com> 1585157335 -0400
committer Brad Bishop <bradleyb@fuzziesquirrel.com> 1586886667 +0000

inventory: decorators: add compatible interface

Add a new classification interface for inventory.

Prior to this patch inventory could be typed by class e.g.: dimm, cpu,
system and by model or part number
(xyz.openbmc_project.Inventory.Decorator.Asset).

This patch adds another way to classify inventory; "compatibles" where
compatibles are more granular then class and less granular than model or
part number.

Obviously not all instances of a class of inventory are the same.  And
vendors often give the same entities different model/part numbers.  This
leaves software without any suitable query identifiers for determining,
or publishing, the relevant (to software) characteristics of the
inventory item.

As a concrete example, consider a data driven application that supports
a number of different power supplies by means of a hardware database.
Futher consider that one power supply vendor releases the same physical
power supply with 5 different model numbers.  Instead of requiring the
application to maintain aliases for each model number, implement
xyz.openbmc_project.Inventory.Decorator.Compatible.

Change-Id: If90b5932d58bedc2d82c7c26a486ed23b3d52f1a
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>