Data Collection SP: Event Exposure data filtering on user and group Ids

[davidjwbbc]

Description

Before data samples can be used in an exposed event sent to a subscriber, the restrictions in the DataAccessProfile must be applied. This issue deals with the application of the User and Group IDs restrictions in DataAccessProfile.userAccessRestrictions.

This restricts data samples to those identified as coming from one of a list of User IDs (GPSI or SUPI) or Group IDs. These restrictions will be applied as the AF queries the data reports database in order to filter the data returned as valid for event exposure.

Note that if these identifiers are not provided in the original data samples, it may be necessary to look up the identifiers belonging to the client UE connection to the Data Collection AF. This method will need some more investigation and therefore is outside the scope of this issue.

New data_collection_data_report_handler_t callbacks may need to be added to allow the SP library to query the data report samples to see if they contain user or group ids.