Prebid Server Bid Adapter: adding support for getFloor

modules/prebidServerBidAdapter/index.js

@@ -639,6 +639,23 @@ const OPEN_RTB_PROTOCOL = {
         utils.deepSetValue(imp, 'ext.prebid.storedauctionresponse.id', storedAuctionResponseBid.storedAuctionResponse.toString());
       }
 
+      const getFloorBid = find(firstBidRequest.bids, bid => bid.adUnitCode === adUnit.code && typeof bid.getFloor === 'function');
+
+      if (getFloorBid) {
+        let floorInfo;
+        try {
+          floorInfo = getFloorBid.getFloor({
+            currency: config.getConfig('currency.adServerCurrency') || DEFAULT_S2S_CURRENCY,
+          });
+        } catch (e) {
+          utils.logError('PBS: getFloor threw an error: ', e);
+        }
+        if (floorInfo && floorInfo.currency && !isNaN(parseFloat(floorInfo.floor))) {
+          imp.bidfloor = parseFloat(floorInfo.floor);
+          imp.bidfloorcur = floorInfo.currency
+        }
+      }
+
       if (imp.banner || imp.video || imp.native) {
         imps.push(imp);
       }

test/spec/modules/prebidServerBidAdapter_spec.js

@@ -829,6 +829,101 @@ describe('S2S Adapter', function () {
       expect(requestBid.imp[0].ext.prebid.storedauctionresponse.id).to.equal('11111');
     });
 
+    describe('price floors module', function () {
+      function runTest(expectedFloor, expectedCur) {
+        adapter.callBids(REQUEST, BID_REQUESTS, addBidResponse, done, ajax);
+        const requestBid = JSON.parse(server.requests[requestCount].requestBody);
+        expect(requestBid.imp[0].bidfloor).to.equal(expectedFloor);
+        expect(requestBid.imp[0].bidfloorcur).to.equal(expectedCur);
+        requestCount += 1;
+      }
+
+      let getFloorResponse, requestCount;
+      beforeEach(function () {
+        getFloorResponse = {};
+        requestCount = 0;
+      });
+
+      it('should NOT pass bidfloor and bidfloorcur when getFloor not present or returns invalid response', function () {
+        const _config = {
+          s2sConfig: CONFIG,
+        };
+
+        config.setConfig(_config);
+
+        // if no get floor
+        runTest(undefined, undefined);
+
+        // if getFloor returns empty object
+        BID_REQUESTS[0].bids[0].getFloor = () => getFloorResponse;
+        sinon.spy(BID_REQUESTS[0].bids[0], 'getFloor');
+
+        runTest(undefined, undefined);
+        // make sure getFloor was called
+        expect(
+          BID_REQUESTS[0].bids[0].getFloor.calledWith({
+            currency: 'USD',
+          })
+        ).to.be.true;
+
+        // if getFloor does not return number
+        getFloorResponse = {currency: 'EUR', floor: 'not a number'};
+        runTest(undefined, undefined);
+
+        // if getFloor does not return currency
+        getFloorResponse = {floor: 1.1};
+        runTest(undefined, undefined);
+      });
+
+      it('should correctly pass bidfloor and bidfloorcur', function () {
+        const _config = {
+          s2sConfig: CONFIG,
+        };
+
+        config.setConfig(_config);
+
+        BID_REQUESTS[0].bids[0].getFloor = () => getFloorResponse;
+        sinon.spy(BID_REQUESTS[0].bids[0], 'getFloor');
+
+        // returns USD and string floor
+        getFloorResponse = {currency: 'USD', floor: '1.23'};
+        runTest(1.23, 'USD');
+        // make sure getFloor was called
+        expect(
+          BID_REQUESTS[0].bids[0].getFloor.calledWith({
+            currency: 'USD',
+          })
+        ).to.be.true;
+
+        // returns non USD and number floor
+        getFloorResponse = {currency: 'EUR', floor: 0.85};
+        runTest(0.85, 'EUR');
+      });
+
+      it('should correctly pass adServerCurrency when set to getFloor not default', function () {
+        config.setConfig({
+          s2sConfig: CONFIG,
+          currency: { adServerCurrency: 'JPY' },
+        });
+
+        // we have to start requestCount at 1 because a conversion rates fetch occurs when adServerCur is not USD!
+        requestCount = 1;
+
+        BID_REQUESTS[0].bids[0].getFloor = () => getFloorResponse;
+        sinon.spy(BID_REQUESTS[0].bids[0], 'getFloor');
+
+        // returns USD and string floor
+        getFloorResponse = {currency: 'JPY', floor: 97.2};
+        runTest(97.2, 'JPY');
+        // make sure getFloor was called with JPY
+        expect(
+          BID_REQUESTS[0].bids[0].getFloor.calledWith({
+            currency: 'JPY',
+          })
+        ).to.be.true;
+      });
+    });
+
     it('adds device.w and device.h even if the config lacks a device object', function () {
       const _config = {
         s2sConfig: CONFIG,