Revise SDL-0153 Support for Short and Full UUID App ID

[Jack-Byrne]

Introduction

This is a revision to make fullAppID mandatory="false" and to add a clarifying note regarding appID case insensitivity.

Motivation

Make Full App ID Non Mandatory

There is language in the original proposal conflicting with the fullAppID RPC spec definition.

From proposal:

If only the (short) appID is present in the RegisterAppInterface RPC request (legacy apps), sdl core shall use the (short) appID as the internal policy app id. i.e. use appID as the policy_app_id and use it to construct the icon path.

In order for this case to be possible, fullAppID must be non mandatory. In addition, even with mobile version negotiation, making fullAppID mandatory would cause a breaking change in RegisterAppInterfaceRequest for legacy applications.

Include Note Regarding AppID Case Insensitivity

During the Core implementation of this original proposal, it was discovered that there was an existing behavior in Core that converts incoming appIDs from a RegisterAppInterfaceRequest to lowercase. I am adding this note to the proposal for documentation and visibility purposes.

Proposed solution

Change fullAppID rpc spec signature to:

Value	Type	Mandatory	Description
fullAppID	String	False	ID used to validate app with policy table entries

Potential downsides

None the author could identify.

Impact on existing code

Change mandatory value fullAppID in mobile_api.xml in RPC Spec to false.

Alternatives considered

No alternatives were considered.

[Jack-Byrne]

@theresalech Ready for review

[theresalech]

@JackLivio can you please update the description to include the proper proposal formatting (introduction, motivation, etc.)? Here's an example for reference: #572. Let me know of any questions, thanks!