Prebid Core: emit seatnonbid from prebid server

modules/prebidServerBidAdapter/index.js

@@ -469,10 +469,13 @@ export function PrebidServer() {
       }
 
       processPBSRequest(s2sBidRequest, bidRequests, ajax, {
-        onResponse: function (isValid, requestedBidders) {
+        onResponse: function (isValid, requestedBidders, response) {
           if (isValid) {
             bidRequests.forEach(bidderRequest => events.emit(CONSTANTS.EVENTS.BIDDER_DONE, bidderRequest));
           }
+          if (shouldEmitNonbids(s2sBidRequest.s2sConfig, response)) {
+            emitNonBids(response.ext.seatnonbid, bidRequests[0].auctionId);
+          }
           done();
           doClientSideSyncs(requestedBidders, gdprConsent, uspConsent, gppConsent);
         },
@@ -551,7 +554,7 @@ export const processPBSRequest = hook('sync', function (s2sBidRequest, bidReques
             logError('error parsing response: ', result ? result.status : 'not valid JSON');
             onResponse(false, requestedBidders);
           } else {
-            onResponse(true, requestedBidders);
+            onResponse(true, requestedBidders, result);
           }
         },
         error: function () {
@@ -567,6 +570,17 @@ export const processPBSRequest = hook('sync', function (s2sBidRequest, bidReques
   }
 }, 'processPBSRequest');
 
+function shouldEmitNonbids(s2sConfig, response) {
+  return s2sConfig?.extPrebid?.returnallbidstatus && response?.ext?.seatnonbid;
+}
+
+function emitNonBids(seatnonbid, auctionId) {
+  events.emit(CONSTANTS.EVENTS.SEAT_NON_BID, {
+    seatnonbid,
+    auctionId
+  });
+}
+
 /**
  * Global setter that sets eids permissions for bidders
  * This setter is to be used by userId module when included

src/auction.js

@@ -151,11 +151,13 @@ export function newAuction({adUnits, adUnitCodes, callback, cbTimeout, labels, a
   let _auctionEnd;
   let _timer;
   let _auctionStatus;
+  let _nonBids = [];
 
   function addBidRequests(bidderRequests) { _bidderRequests = _bidderRequests.concat(bidderRequests); }
   function addBidReceived(bidsReceived) { _bidsReceived = _bidsReceived.concat(bidsReceived); }
   function addBidRejected(bidsRejected) { _bidsRejected = _bidsRejected.concat(bidsRejected); }
   function addNoBid(noBid) { _noBids = _noBids.concat(noBid); }
+  function addNonBids(seatnonbids) { _nonBids = _nonBids.concat(seatnonbids); }
 
   function getProperties() {
     return {
@@ -172,7 +174,8 @@ export function newAuction({adUnits, adUnitCodes, callback, cbTimeout, labels, a
       bidsRejected: _bidsRejected,
       winningBids: _winningBids,
       timeout: _timeout,
-      metrics: metrics
+      metrics: metrics,
+      seatNonBids: _nonBids
     };
   }
 
@@ -369,6 +372,12 @@ export function newAuction({adUnits, adUnitCodes, callback, cbTimeout, labels, a
     adapterManager.callSetTargetingBidder(bid.adapterCode || bid.bidder, bid);
   }
 
+  events.on(CONSTANTS.EVENTS.SEAT_NON_BID, (event) => {
+    if (event.auctionId === _auctionId) {
+      addNonBids(event.seatnonbid)
+    }
+  });
+
   return {
     addBidReceived,
     addBidRejected,
@@ -387,6 +396,7 @@ export function newAuction({adUnits, adUnitCodes, callback, cbTimeout, labels, a
     getBidRequests: () => _bidderRequests,
     getBidsReceived: () => _bidsReceived,
     getNoBids: () => _noBids,
+    getNonBids: () => _nonBids,
     getFPD: () => ortb2Fragments,
     getMetrics: () => metrics,
   };

src/constants.json

@@ -31,6 +31,7 @@
     "BID_RESPONSE": "bidResponse",
     "BID_REJECTED": "bidRejected",
     "NO_BID": "noBid",
+    "SEAT_NON_BID": "seatNonBid",
     "BID_WON": "bidWon",
     "BIDDER_DONE": "bidderDone",
     "BIDDER_ERROR": "bidderError",

test/spec/auctionmanager_spec.js

@@ -759,6 +759,20 @@ describe('auctionmanager.js', function () {
       sinon.assert.calledWith(stubMakeBidRequests, ...anyArgs.slice(0, 5).concat([sinon.match.same(ortb2Fragments)]));
       sinon.assert.calledWith(stubCallAdapters, ...anyArgs.slice(0, 7).concat([sinon.match.same(ortb2Fragments)]));
     });
+
+    it('correctly adds nonbids when they are emitted', () => {
+      const ortb2Fragments = {
+        global: {},
+        bidder: {}
+      }
+      const auction = auctionManager.createAuction({adUnits, ortb2Fragments});
+      expect(auction.getNonBids()[0]).to.equal(undefined);
+      events.emit(CONSTANTS.EVENTS.SEAT_NON_BID, {
+        auctionId: auction.getAuctionId(),
+        seatnonbid: ['test']
+      });
+      expect(auction.getNonBids()[0]).to.equal('test');
+    });
   });
 
   describe('addBidResponse #1', function () {

test/spec/modules/prebidServerBidAdapter_spec.js

@@ -2928,6 +2928,21 @@ describe('S2S Adapter', function () {
       expect(response).to.have.property('ttl', 60);
     });
 
+    it('handles seatnonbid responses and calls SEAT_NON_BID', function () {
+      const original = CONFIG;
+      CONFIG.extPrebid = { returnallbidstatus: true };
+      const nonbidResponse = {...RESPONSE_OPENRTB, ext: {seatnonbid: [{}]}};
+      config.setConfig({ CONFIG });
+      CONFIG = original;
+      adapter.callBids(REQUEST, BID_REQUESTS, addBidResponse, done, ajax);
+      const responding = deepClone(nonbidResponse);
+      Object.assign(responding.ext.seatnonbid, [{auctionId: 2}])
+      server.requests[0].respond(200, {}, JSON.stringify(responding));
+      const event = events.emit.secondCall.args;
+      expect(event[0]).to.equal(CONSTANTS.EVENTS.SEAT_NON_BID);
+      expect(event[1].seatnonbid[0]).to.have.property('auctionId', 2);
+    });
+
     it('respects defaultTtl', function () {
       const s2sConfig = Object.assign({}, CONFIG, {
         defaultTtl: 30