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Simplifying exchange module: bidResponseExt gets built anyway (prebid…
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…#1518)

* first draft

* Scott's feedback

* stepping out real quick

* add cache errors to bidResponseExt before marshalling

* Removed vim's swp file

Co-authored-by: Gus Carreon <[email protected]>
Co-authored-by: Gus Carreon <[email protected]>
Co-authored-by: Gus Carreon <[email protected]>
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@guscarreon
4 people authored Oct 15, 2020
1 parent aee5efd commit 04a77ea
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Showing 2 changed files with 70 additions and 64 deletions.
128 changes: 65 additions & 63 deletions exchange/exchange.go
View file
Original file line number Diff line number Diff line change
Expand Up @@ -96,6 +96,7 @@ func NewExchange(client *http.Client, cache prebid_cache_client.Client, cfg *con

func (e *exchange) HoldAuction(ctx context.Context, bidRequest *openrtb.BidRequest, usersyncs IdFetcher, labels pbsmetrics.Labels, account *config.Account, categoriesFetcher *stored_requests.CategoryFetcher, debugLog *DebugLog) (*openrtb.BidResponse, error) {

var err error
requestExt, err := extractBidRequestExt(bidRequest)
if err != nil {
return nil, err
Expand All @@ -114,34 +115,11 @@ func (e *exchange) HoldAuction(ctx context.Context, bidRequest *openrtb.BidReque

bidAdjustmentFactors := getExtBidAdjustmentFactors(requestExt)

for _, impInRequest := range bidRequest.Imp {
var impLabels pbsmetrics.ImpLabels = pbsmetrics.ImpLabels{
BannerImps: impInRequest.Banner != nil,
VideoImps: impInRequest.Video != nil,
AudioImps: impInRequest.Audio != nil,
NativeImps: impInRequest.Native != nil,
}
e.me.RecordImps(impLabels)
}
recordImpMetrics(bidRequest, e.me)

// Make our best guess if GDPR applies
usersyncIfAmbiguous := e.UsersyncIfAmbiguous
var geo *openrtb.Geo = nil
if bidRequest.User != nil && bidRequest.User.Geo != nil {
geo = bidRequest.User.Geo
} else if bidRequest.Device != nil && bidRequest.Device.Geo != nil {
geo = bidRequest.Device.Geo
}
if geo != nil {
// If we have a country set, and it is on the list, we assume GDPR applies if not set on the request.
// Otherwise we assume it does not apply as long as it appears "valid" (is 3 characters long).
if _, found := e.privacyConfig.GDPR.EEACountriesMap[strings.ToUpper(geo.Country)]; found {
usersyncIfAmbiguous = false
} else if len(geo.Country) == 3 {
// The country field is formatted properly as a three character country code
usersyncIfAmbiguous = true
}
}
usersyncIfAmbiguous := e.parseUsersyncIfAmbiguous(bidRequest)

// Slice of BidRequests, each a copy of the original cleaned to only contain bidder data for the named bidder
blabels := make(map[openrtb_ext.BidderName]*pbsmetrics.AdapterLabels)
cleanRequests, aliases, privacyLabels, errs := cleanOpenRTBRequests(ctx, bidRequest, requestExt, usersyncs, blabels, labels, e.gDPR, usersyncIfAmbiguous, e.privacyConfig)
Expand All @@ -161,14 +139,13 @@ func (e *exchange) HoldAuction(ctx context.Context, bidRequest *openrtb.BidReque

adapterBids, adapterExtra, anyBidsReturned := e.getAllBids(auctionCtx, cleanRequests, aliases, bidAdjustmentFactors, blabels, conversions)

var auc *auction = nil
var bidResponseExt *openrtb_ext.ExtBidResponse = nil
var auc *auction
var cacheErrs []error
if anyBidsReturned {

var bidCategory map[string]string
//If includebrandcategory is present in ext then CE feature is on.
if requestExt.Prebid.Targeting != nil && requestExt.Prebid.Targeting.IncludeBrandCategory != nil {
var err error
var rejections []string
bidCategory, adapterBids, rejections, err = applyCategoryMapping(ctx, requestExt, adapterBids, *categoriesFetcher, targData)
if err != nil {
Expand All @@ -189,42 +166,33 @@ func (e *exchange) HoldAuction(ctx context.Context, bidRequest *openrtb.BidReque
errs = append(errs, dealErrs...)
}

if debugLog != nil && debugLog.Enabled {
bidResponseExt = e.makeExtBidResponse(adapterBids, adapterExtra, bidRequest, debugInfo, errs)
if bidRespExtBytes, err := json.Marshal(bidResponseExt); err == nil {
debugLog.Data.Response = string(bidRespExtBytes)
} else {
debugLog.Data.Response = "Unable to marshal response ext for debugging"
errs = append(errs, errors.New(debugLog.Data.Response))
}
}

cacheErrs := auc.doCache(ctx, e.cache, targData, bidRequest, 60, &account.CacheTTL, bidCategory, debugLog)
if len(cacheErrs) > 0 {
errs = append(errs, cacheErrs...)
}
targData.setTargeting(auc, bidRequest.App != nil, bidCategory)

// Ensure caching errors are added if the bid response ext has already been created
if bidResponseExt != nil && len(cacheErrs) > 0 {
bidderCacheErrs := errsToBidderErrors(cacheErrs)
bidResponseExt.Errors[openrtb_ext.PrebidExtKey] = append(bidResponseExt.Errors[openrtb_ext.PrebidExtKey], bidderCacheErrs...)
}
}
}

bidResponseExt := e.makeExtBidResponse(adapterBids, adapterExtra, bidRequest, debugInfo, errs)

// Ensure caching errors are added in case auc.doCache was called and errors were returned
if len(cacheErrs) > 0 {
bidderCacheErrs := errsToBidderErrors(cacheErrs)
bidResponseExt.Errors[openrtb_ext.PrebidExtKey] = append(bidResponseExt.Errors[openrtb_ext.PrebidExtKey], bidderCacheErrs...)
}

if !anyBidsReturned {
if debugLog != nil && debugLog.Enabled {
if debugLog != nil && debugLog.Enabled {
if bidRespExtBytes, err := json.Marshal(bidResponseExt); err == nil {
debugLog.Data.Response = string(bidRespExtBytes)
} else {
debugLog.Data.Response = "Unable to marshal response ext for debugging"
errs = append(errs, err)
}
if !anyBidsReturned {
if rawUUID, err := uuid.NewV4(); err == nil {
debugLog.CacheKey = rawUUID.String()

bidResponseExt = e.makeExtBidResponse(adapterBids, adapterExtra, bidRequest, debugInfo, errs)
if bidRespExtBytes, err := json.Marshal(bidResponseExt); err == nil {
debugLog.Data.Response = string(bidRespExtBytes)
} else {
debugLog.Data.Response = "Unable to marshal response ext for debugging"
}
} else {
errs = append(errs, err)
}
Expand All @@ -235,6 +203,41 @@ func (e *exchange) HoldAuction(ctx context.Context, bidRequest *openrtb.BidReque
return e.buildBidResponse(ctx, liveAdapters, adapterBids, bidRequest, adapterExtra, auc, bidResponseExt, cacheInstructions.returnCreative, errs)
}

func (e *exchange) parseUsersyncIfAmbiguous(bidRequest *openrtb.BidRequest) bool {
usersyncIfAmbiguous := e.UsersyncIfAmbiguous
var geo *openrtb.Geo = nil

if bidRequest.User != nil && bidRequest.User.Geo != nil {
geo = bidRequest.User.Geo
} else if bidRequest.Device != nil && bidRequest.Device.Geo != nil {
geo = bidRequest.Device.Geo
}
if geo != nil {
// If we have a country set, and it is on the list, we assume GDPR applies if not set on the request.
// Otherwise we assume it does not apply as long as it appears "valid" (is 3 characters long).
if _, found := e.privacyConfig.GDPR.EEACountriesMap[strings.ToUpper(geo.Country)]; found {
usersyncIfAmbiguous = false
} else if len(geo.Country) == 3 {
// The country field is formatted properly as a three character country code
usersyncIfAmbiguous = true
}
}

return usersyncIfAmbiguous
}

func recordImpMetrics(bidRequest *openrtb.BidRequest, metricsEngine pbsmetrics.MetricsEngine) {
for _, impInRequest := range bidRequest.Imp {
var impLabels pbsmetrics.ImpLabels = pbsmetrics.ImpLabels{
BannerImps: impInRequest.Banner != nil,
VideoImps: impInRequest.Video != nil,
AudioImps: impInRequest.Audio != nil,
NativeImps: impInRequest.Native != nil,
}
metricsEngine.RecordImps(impLabels)
}
}

type DealTierInfo struct {
Prefix string `json:"prefix"`
MinDealTier int `json:"minDealTier"`
Expand Down Expand Up @@ -479,6 +482,7 @@ func errsToBidderErrors(errs []error) []openrtb_ext.ExtBidderError {
// This piece takes all the bids supplied by the adapters and crafts an openRTB response to send back to the requester
func (e *exchange) buildBidResponse(ctx context.Context, liveAdapters []openrtb_ext.BidderName, adapterBids map[openrtb_ext.BidderName]*pbsOrtbSeatBid, bidRequest *openrtb.BidRequest, adapterExtra map[openrtb_ext.BidderName]*seatResponseExtra, auc *auction, bidResponseExt *openrtb_ext.ExtBidResponse, returnCreative bool, errList []error) (*openrtb.BidResponse, error) {
bidResponse := new(openrtb.BidResponse)
var err error

bidResponse.ID = bidRequest.ID
if len(liveAdapters) == 0 {
Expand All @@ -500,21 +504,19 @@ func (e *exchange) buildBidResponse(ctx context.Context, liveAdapters []openrtb_

bidResponse.SeatBid = seatBids

if bidResponseExt == nil {
contextDebugValue := ctx.Value(DebugContextKey)
var debugInfo bool
if contextDebugValue != nil {
debugInfo = contextDebugValue.(bool)
}
bidResponseExt = e.makeExtBidResponse(adapterBids, adapterExtra, bidRequest, debugInfo, errList)
}
bidResponse.Ext, err = encodeBidResponseExt(bidResponseExt)

return bidResponse, err
}

func encodeBidResponseExt(bidResponseExt *openrtb_ext.ExtBidResponse) ([]byte, error) {
buffer := &bytes.Buffer{}
enc := json.NewEncoder(buffer)

enc.SetEscapeHTML(false)
err := enc.Encode(bidResponseExt)
bidResponse.Ext = buffer.Bytes()

return bidResponse, err
return buffer.Bytes(), err
}

func applyCategoryMapping(ctx context.Context, requestExt *openrtb_ext.ExtRequest, seatBids map[openrtb_ext.BidderName]*pbsOrtbSeatBid, categoriesFetcher stored_requests.CategoryFetcher, targData *targetData) (map[string]string, map[openrtb_ext.BidderName]*pbsOrtbSeatBid, []string, error) {
Expand Down
6 changes: 5 additions & 1 deletion exchange/exchange_test.go
View file
Original file line number Diff line number Diff line change
Expand Up @@ -955,9 +955,13 @@ func TestBidResponseCurrency(t *testing.T) {
},
}

bidResponseExt := &openrtb_ext.ExtBidResponse{
ResponseTimeMillis: map[openrtb_ext.BidderName]int{openrtb_ext.BidderName("appnexus"): 5},
RequestTimeoutMillis: 500,
}
// Run tests
for i := range testCases {
actualBidResp, err := e.buildBidResponse(context.Background(), liveAdapters, testCases[i].adapterBids, bidRequest, adapterExtra, nil, nil, true, errList)
actualBidResp, err := e.buildBidResponse(context.Background(), liveAdapters, testCases[i].adapterBids, bidRequest, adapterExtra, nil, bidResponseExt, true, errList)
assert.NoError(t, err, fmt.Sprintf("[TEST_FAILED] e.buildBidResponse resturns error in test: %s Error message: %s \n", testCases[i].description, err))
assert.Equalf(t, testCases[i].expectedBidResponse, actualBidResp, fmt.Sprintf("[TEST_FAILED] Objects must be equal for test: %s \n Expected: >>%s<< \n Actual: >>%s<< ", testCases[i].description, testCases[i].expectedBidResponse.Ext, actualBidResp.Ext))
}
Expand Down

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