Adds keyvalue hb_format support

docs/endpoints/openrtb2/auction.md

@@ -173,6 +173,7 @@ to set these params on the response at `response.seatbid[i].bid[j].ext.prebid.ta
         },
         "includewinners": false, // Optional param defaulting to true
         "includebidderkeys": false // Optional param defaulting to true
+        "includeformat": false //Optional param defaulting to false
       }
     }
   }
@@ -184,6 +185,8 @@ For backwards compatibility the following strings will also be allowed as price
 
 One of "includewinners" or "includebidderkeys" must be true (both default to true if unset). If both were false, then no targeting keys would be set, which is better configured by omitting targeting altogether.
 
+The parameter "includeformat" is for multiformat support. It will add the key `hb_format` and/or `hb_format_{bidderName}` as per "includewinners" and "includebidderkeys" above.
+
 MediaType PriceGranularity (PBS-Java only) - when a single OpenRTB request contains multiple impressions with different mediatypes, or a single impression supports multiple formats, the different mediatypes may need different price granularities. If `mediatypepricegranularity` is present, `pricegranularity` would only be used for any mediatypes not specified. 
 
 ```

exchange/exchange.go

@@ -135,6 +135,7 @@ func (e *exchange) HoldAuction(ctx context.Context, bidRequest *openrtb.BidReque
 				includeBidderKeys: requestExt.Prebid.Targeting.IncludeBidderKeys,
 				includeCacheBids:  shouldCacheBids,
 				includeCacheVast:  shouldCacheVAST,
+				includeFormat:     requestExt.Prebid.Targeting.IncludeFormat,
 			}
 			targData.cacheHost, targData.cachePath = e.cache.GetExtCacheData()
 		}

exchange/targeting.go

@@ -22,6 +22,7 @@ type targetData struct {
 	includeBidderKeys bool
 	includeCacheBids  bool
 	includeCacheVast  bool
+	includeFormat     bool
 	// cacheHost and cachePath exist to supply cache host and path as targeting parameters
 	cacheHost string
 	cachePath string
@@ -53,6 +54,9 @@ func (targData *targetData) setTargeting(auc *auction, isApp bool, categoryMappi
 			if vastID, ok := auc.vastCacheIds[topBidPerBidder.bid]; ok {
 				targData.addKeys(targets, openrtb_ext.HbVastCacheKey, vastID, bidderName, isOverallWinner)
 			}
+			if targData.includeFormat {
+				targData.addKeys(targets, openrtb_ext.HbFormatKey, string(topBidPerBidder.bidType), bidderName, isOverallWinner)
+			}
 
 			if targData.cacheHost != "" {
 				targData.addKeys(targets, openrtb_ext.HbConstantCacheHostKey, targData.cacheHost, bidderName, isOverallWinner)

exchange/targeting_test.go

@@ -247,3 +247,166 @@ func (f *mockFetcher) GetId(bidder openrtb_ext.BidderName) (string, bool) {
 func mockServer(w http.ResponseWriter, req *http.Request) {
 	w.Write([]byte("{}"))
 }
+
+type TargetingTestData struct {
+	Description                string
+	TargetData                 targetData
+	Auction                    auction
+	IsApp                      bool
+	CategoryMapping            map[string]string
+	ExpectedBidTargetsByBidder map[string]map[openrtb_ext.BidderName]map[string]string
+}
+
+func TestSetTargeting(t *testing.T) {
+	for _, test := range TargetingTests {
+		auc := &test.Auction
+		// Set rounded prices from the auction data
+		auc.setRoundedPrices(test.TargetData.priceGranularity)
+		winningBids := make(map[string]*pbsOrtbBid)
+		// Set winning bids from the auction data
+		for imp, bidsByBidder := range auc.winningBidsByBidder {
+			for _, bid := range bidsByBidder {
+				if winningBid, ok := winningBids[imp]; ok {
+					if winningBid.bid.Price < bid.bid.Price {
+						winningBids[imp] = bid
+					}
+				} else {
+					winningBids[imp] = bid
+				}
+			}
+		}
+		auc.winningBids = winningBids
+		targData := test.TargetData
+		targData.setTargeting(auc, test.IsApp, test.CategoryMapping)
+		for imp, targetsByBidder := range test.ExpectedBidTargetsByBidder {
+			for bidder, expected := range targetsByBidder {
+				assert.Equal(t,
+					expected,
+					auc.winningBidsByBidder[imp][bidder].bidTargets,
+					"Test: %s\nTargeting failed for bidder %s on imp %s.",
+					test.Description,
+					string(bidder),
+					imp)
+			}
+		}
+	}
+
+}
+
+var TargetingTests []TargetingTestData = []TargetingTestData{
+	{
+		Description: "Targeting winners only (most basic targeting example)",
+		TargetData: targetData{
+			priceGranularity: openrtb_ext.PriceGranularityFromString("med"),
+			includeWinners:   true,
+		},
+		Auction: auction{
+			winningBidsByBidder: map[string]map[openrtb_ext.BidderName]*pbsOrtbBid{
+				"ImpId-1": {
+					openrtb_ext.BidderAppnexus: {
+						bid: &openrtb.Bid{
+							Price: 1.23,
+						},
+						bidType: openrtb_ext.BidTypeBanner,
+					},
+					openrtb_ext.BidderRubicon: {
+						bid: &openrtb.Bid{
+							Price: 0.84,
+						},
+						bidType: openrtb_ext.BidTypeBanner,
+					},
+				},
+			},
+		},
+		ExpectedBidTargetsByBidder: map[string]map[openrtb_ext.BidderName]map[string]string{
+			"ImpId-1": {
+				openrtb_ext.BidderAppnexus: {
+					"hb_bidder": "appnexus",
+					"hb_pb":     "1.20",
+				},
+				openrtb_ext.BidderRubicon: {},
+			},
+		},
+	},
+	{
+		Description: "Targeting on bidders only",
+		TargetData: targetData{
+			priceGranularity:  openrtb_ext.PriceGranularityFromString("med"),
+			includeBidderKeys: true,
+		},
+		Auction: auction{
+			winningBidsByBidder: map[string]map[openrtb_ext.BidderName]*pbsOrtbBid{
+				"ImpId-1": {
+					openrtb_ext.BidderAppnexus: {
+						bid: &openrtb.Bid{
+							Price: 1.23,
+						},
+						bidType: openrtb_ext.BidTypeBanner,
+					},
+					openrtb_ext.BidderRubicon: {
+						bid: &openrtb.Bid{
+							Price: 0.84,
+						},
+						bidType: openrtb_ext.BidTypeBanner,
+					},
+				},
+			},
+		},
+		ExpectedBidTargetsByBidder: map[string]map[openrtb_ext.BidderName]map[string]string{
+			"ImpId-1": {
+				openrtb_ext.BidderAppnexus: {
+					"hb_bidder_appnexus": "appnexus",
+					"hb_pb_appnexus":     "1.20",
+				},
+				openrtb_ext.BidderRubicon: {
+					"hb_bidder_rubicon": "rubicon",
+					"hb_pb_rubicon":     "0.80",
+				},
+			},
+		},
+	},
+	{
+		Description: "Full basic targeting with hd_format",
+		TargetData: targetData{
+			priceGranularity:  openrtb_ext.PriceGranularityFromString("med"),
+			includeWinners:    true,
+			includeBidderKeys: true,
+			includeFormat:     true,
+		},
+		Auction: auction{
+			winningBidsByBidder: map[string]map[openrtb_ext.BidderName]*pbsOrtbBid{
+				"ImpId-1": {
+					openrtb_ext.BidderAppnexus: {
+						bid: &openrtb.Bid{
+							Price: 1.23,
+						},
+						bidType: openrtb_ext.BidTypeBanner,
+					},
+					openrtb_ext.BidderRubicon: {
+						bid: &openrtb.Bid{
+							Price: 0.84,
+						},
+						bidType: openrtb_ext.BidTypeBanner,
+					},
+				},
+			},
+		},
+		ExpectedBidTargetsByBidder: map[string]map[openrtb_ext.BidderName]map[string]string{
+			"ImpId-1": {
+				openrtb_ext.BidderAppnexus: {
+					"hb_bidder":          "appnexus",
+					"hb_bidder_appnexus": "appnexus",
+					"hb_pb":              "1.20",
+					"hb_pb_appnexus":     "1.20",
+					"hb_format":          "banner",
+					"hb_format_appnexus": "banner",
+				},
+				openrtb_ext.BidderRubicon: {
+					"hb_bidder_rubicon": "rubicon",
+					"hb_pb_rubicon":     "0.80",
+					"hb_format_rubicon": "banner",
+				},
+			},
+		},
+	},
+}

openrtb_ext/bid.go

@@ -99,6 +99,9 @@ const (
 	HbSizeConstantKey   TargetingKey = "hb_size"
 	HbDealIDConstantKey TargetingKey = "hb_deal"
 
+	// HbFormatKey is the format of the bid. For example, "video", "banner"
+	HbFormatKey TargetingKey = "hb_format"
+
 	// HbCacheKey and HbVastCacheKey store UUIDs which can be used to fetch things from prebid cache.
 	// Callers should *never* assume that either of these exist, since the call to the cache may always fail.
 	//

openrtb_ext/request.go

@@ -85,6 +85,7 @@ type ExtRequestTargeting struct {
 	IncludeWinners       bool                     `json:"includewinners"`
 	IncludeBidderKeys    bool                     `json:"includebidderkeys"`
 	IncludeBrandCategory *ExtIncludeBrandCategory `json:"includebrandcategory"`
+	IncludeFormat        bool                     `json:"includeformat"`
 	DurationRangeSec     []int                    `json:"durationrangesec"`
 }