DAS Bid Adapter: forward user.eids from ortb2 to OpenRTB request

[skoklowski]

Type of change

• Bugfix

• Feature

• New bidder adapter

• Updated bidder adapter

• Code style update (formatting, local variables)

• Refactoring (no functional changes, no api changes)

• Build related changes

• CI related changes

• Does this change affect user-facing APIs or examples documented on http://prebid.org?

• Other

Description of change

Adds support for passing Extended IDs (user.eids) from Prebid's identity modules to the DAS bid server.

When the pubProvidedId module is configured with an eidsFunction that returns EIDs with source: 'onet.pl', the adapter now forwards those EIDs in the outgoing OpenRTB request under user.eids.

What changed:

• Added buildUserEids(bidderRequest) — reads bidderRequest.ortb2.user.eids, filters entries with source === 'onet.pl', and returns them or null if absent
• buildOpenRTBRequest now sets request.user.eids when EIDs are present
• Added unit tests covering: EID present, EID absent, empty eids array, non-onet.pl source

Example EID structure passed through:

{
  "source": "onet.pl",
  "inserter": "onet.pl",
  "uids": [{
    "id": "<tracking-id>",
    "atype": 1,
    "ext": {
      "id_type": "tracking",
      "consent_required": true
    }
  }]
}

Other information

This is the Prebid-side counterpart of a change in the publisher's configuration. The adapter is now responsible for forwarding it — no changes to adapter parameters or bidder documentation required.