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undertone.go
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undertone.go
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package undertone
import (
"encoding/json"
"fmt"
"net/http"
"strconv"
"github.com/prebid/openrtb/v19/openrtb2"
"github.com/prebid/prebid-server/adapters"
"github.com/prebid/prebid-server/config"
"github.com/prebid/prebid-server/errortypes"
"github.com/prebid/prebid-server/openrtb_ext"
)
const adapterId = 4
const adapterVersion = "1.0.0"
type adapter struct {
endpoint string
}
type undertoneParams struct {
Id int `json:"id"`
Version string `json:"version"`
}
func Builder(bidderName openrtb_ext.BidderName, config config.Adapter, server config.Server) (adapters.Bidder, error) {
bidder := &adapter{
endpoint: config.Endpoint,
}
return bidder, nil
}
func (a *adapter) MakeRequests(request *openrtb2.BidRequest, requestInfo *adapters.ExtraRequestInfo) ([]*adapters.RequestData, []error) {
imps, publisherId, errs := getImpsAndPublisherId(request)
if len(imps) == 0 {
return nil, errs
}
reqCopy := *request
reqCopy.Imp = imps
populateSiteApp(&reqCopy, publisherId, request.Site, request.App)
e := populateBidReqExt(&reqCopy)
if e != nil {
errs = append(errs, e)
}
requestJSON, err := json.Marshal(reqCopy)
if err != nil {
return nil, append(errs, err)
}
requestData := &adapters.RequestData{
Method: "POST",
Uri: a.endpoint,
Body: requestJSON,
}
return []*adapters.RequestData{requestData}, errs
}
func (a *adapter) MakeBids(request *openrtb2.BidRequest, requestData *adapters.RequestData, responseData *adapters.ResponseData) (*adapters.BidderResponse, []error) {
if responseData.StatusCode == http.StatusNoContent {
return nil, nil
}
if responseData.StatusCode == http.StatusBadRequest {
err := &errortypes.BadInput{
Message: "Unexpected status code: 400. Bad request from publisher. Run with request.debug = 1 for more info.",
}
return nil, []error{err}
}
if responseData.StatusCode != http.StatusOK {
err := &errortypes.BadServerResponse{
Message: fmt.Sprintf("Unexpected status code: %d. Run with request.debug = 1 for more info.", responseData.StatusCode),
}
return nil, []error{err}
}
var response openrtb2.BidResponse
if err := json.Unmarshal(responseData.Body, &response); err != nil {
return nil, []error{err}
}
impIdBidTypeMap := map[string]openrtb_ext.BidType{}
for _, imp := range request.Imp {
if imp.Banner != nil {
impIdBidTypeMap[imp.ID] = openrtb_ext.BidTypeBanner
} else if imp.Video != nil {
impIdBidTypeMap[imp.ID] = openrtb_ext.BidTypeVideo
}
}
bidResponse := adapters.NewBidderResponseWithBidsCapacity(len(request.Imp))
bidResponse.Currency = response.Cur
for _, seatBid := range response.SeatBid {
for i, bid := range seatBid.Bid {
bidType, ok := impIdBidTypeMap[bid.ImpID]
if !ok {
continue
}
b := &adapters.TypedBid{
Bid: &seatBid.Bid[i],
BidType: bidType,
}
bidResponse.Bids = append(bidResponse.Bids, b)
}
}
return bidResponse, nil
}
func populateBidReqExt(bidRequest *openrtb2.BidRequest) error {
undertoneParams := &undertoneParams{
Id: adapterId,
Version: adapterVersion,
}
undertoneParamsJSON, err := json.Marshal(undertoneParams)
if err != nil {
return err
}
bidRequest.Ext = undertoneParamsJSON
return nil
}
func populateSiteApp(bidRequest *openrtb2.BidRequest, publisherId int, site *openrtb2.Site, app *openrtb2.App) {
pubId := strconv.Itoa(publisherId)
if site != nil {
siteCopy := *site
var publisher openrtb2.Publisher
if siteCopy.Publisher != nil {
publisher = *siteCopy.Publisher
}
publisher.ID = pubId
bidRequest.Site = &siteCopy
bidRequest.Site.Publisher = &publisher
} else if app != nil {
appCopy := *app
var publisher openrtb2.Publisher
if appCopy.Publisher != nil {
publisher = *appCopy.Publisher
}
publisher.ID = pubId
bidRequest.App = &appCopy
bidRequest.App.Publisher = &publisher
}
}
func getImpsAndPublisherId(bidRequest *openrtb2.BidRequest) ([]openrtb2.Imp, int, []error) {
var errs []error
var publisherId int
var validImps []openrtb2.Imp
for _, imp := range bidRequest.Imp {
var extImpBidder adapters.ExtImpBidder
if err := json.Unmarshal(imp.Ext, &extImpBidder); err != nil {
errs = append(errs, getInvalidImpErr(imp.ID, err))
continue
}
var extImpUndertone openrtb_ext.ExtImpUndertone
if err := json.Unmarshal(extImpBidder.Bidder, &extImpUndertone); err != nil {
errs = append(errs, getInvalidImpErr(imp.ID, err))
continue
}
if publisherId == 0 {
publisherId = extImpUndertone.PublisherID
}
imp.TagID = strconv.Itoa(extImpUndertone.PlacementID)
imp.Ext = nil
validImps = append(validImps, imp)
}
return validImps, publisherId, errs
}
func getInvalidImpErr(impId string, err error) *errortypes.BadInput {
return &errortypes.BadInput{
Message: "Invalid impid=" + impId + ": " + err.Error(),
}
}