/
gumgum.go
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/
gumgum.go
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package gumgum
import (
"encoding/json"
"fmt"
"net/http"
"strconv"
"strings"
"github.com/prebid/openrtb/v17/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"
)
// GumGumAdapter implements Bidder interface.
type GumGumAdapter struct {
URI string
}
// MakeRequests makes the HTTP requests which should be made to fetch bids.
func (g *GumGumAdapter) MakeRequests(request *openrtb2.BidRequest, reqInfo *adapters.ExtraRequestInfo) ([]*adapters.RequestData, []error) {
var validImps []openrtb2.Imp
var siteCopy openrtb2.Site
if request.Site != nil {
siteCopy = *request.Site
}
numRequests := len(request.Imp)
errs := make([]error, 0, numRequests)
for i := 0; i < numRequests; i++ {
imp := request.Imp[i]
gumgumExt, err := preprocess(&imp)
if err != nil {
errs = append(errs, err)
} else {
if gumgumExt.Zone != "" {
siteCopy.ID = gumgumExt.Zone
}
if gumgumExt.PubID != 0 {
if siteCopy.Publisher != nil {
siteCopy.Publisher.ID = strconv.FormatFloat(gumgumExt.PubID, 'f', -1, 64)
} else {
siteCopy.Publisher = &openrtb2.Publisher{ID: strconv.FormatFloat(gumgumExt.PubID, 'f', -1, 64)}
}
}
validImps = append(validImps, imp)
}
}
if len(validImps) == 0 {
return nil, errs
}
request.Imp = validImps
if request.Site != nil {
request.Site = &siteCopy
}
reqJSON, err := json.Marshal(request)
if err != nil {
errs = append(errs, err)
return nil, errs
}
headers := http.Header{}
headers.Add("Content-Type", "application/json;charset=utf-8")
headers.Add("Accept", "application/json")
return []*adapters.RequestData{{
Method: "POST",
Uri: g.URI,
Body: reqJSON,
Headers: headers,
}}, errs
}
// MakeBids unpacks the server's response into Bids.
func (g *GumGumAdapter) MakeBids(internalRequest *openrtb2.BidRequest, externalRequest *adapters.RequestData, response *adapters.ResponseData) (*adapters.BidderResponse, []error) {
if response.StatusCode == http.StatusNoContent {
return nil, nil
}
if response.StatusCode == http.StatusBadRequest {
return nil, []error{&errortypes.BadInput{
Message: fmt.Sprintf("Bad user input: HTTP status %d", response.StatusCode),
}}
}
if response.StatusCode != http.StatusOK {
return nil, []error{&errortypes.BadServerResponse{
Message: fmt.Sprintf("Bad server response: HTTP status %d", response.StatusCode),
}}
}
var bidResp openrtb2.BidResponse
if err := json.Unmarshal(response.Body, &bidResp); err != nil {
return nil, []error{&errortypes.BadServerResponse{
Message: fmt.Sprintf("Bad server response: %d. ", err),
}}
}
var errs []error
bidResponse := adapters.NewBidderResponseWithBidsCapacity(5)
for _, sb := range bidResp.SeatBid {
for i := range sb.Bid {
mediaType := getMediaTypeForImpID(sb.Bid[i].ImpID, internalRequest.Imp)
if mediaType == openrtb_ext.BidTypeVideo {
price := strconv.FormatFloat(sb.Bid[i].Price, 'f', -1, 64)
sb.Bid[i].AdM = strings.Replace(sb.Bid[i].AdM, "${AUCTION_PRICE}", price, -1)
}
bidResponse.Bids = append(bidResponse.Bids, &adapters.TypedBid{
Bid: &sb.Bid[i],
BidType: mediaType,
})
}
}
return bidResponse, errs
}
func preprocess(imp *openrtb2.Imp) (*openrtb_ext.ExtImpGumGum, error) {
var bidderExt adapters.ExtImpBidder
if err := json.Unmarshal(imp.Ext, &bidderExt); err != nil {
err = &errortypes.BadInput{
Message: err.Error(),
}
return nil, err
}
var gumgumExt openrtb_ext.ExtImpGumGum
if err := json.Unmarshal(bidderExt.Bidder, &gumgumExt); err != nil {
err = &errortypes.BadInput{
Message: err.Error(),
}
return nil, err
}
if imp.Banner != nil && imp.Banner.W == nil && imp.Banner.H == nil && len(imp.Banner.Format) > 0 {
bannerCopy := *imp.Banner
format := bannerCopy.Format[0]
bannerCopy.W = &(format.W)
bannerCopy.H = &(format.H)
if gumgumExt.Slot != 0 {
var err error
bannerExt := getBiggerFormat(bannerCopy.Format, gumgumExt.Slot)
bannerCopy.Ext, err = json.Marshal(&bannerExt)
if err != nil {
return nil, err
}
}
imp.Banner = &bannerCopy
}
if imp.Video != nil {
err := validateVideoParams(imp.Video)
if err != nil {
return nil, err
}
if gumgumExt.IrisID != "" {
videoCopy := *imp.Video
videoExt := openrtb_ext.ExtImpGumGumVideo{IrisID: gumgumExt.IrisID}
videoCopy.Ext, err = json.Marshal(&videoExt)
if err != nil {
return nil, err
}
imp.Video = &videoCopy
}
}
return &gumgumExt, nil
}
func getBiggerFormat(formatList []openrtb2.Format, slot float64) openrtb_ext.ExtImpGumGumBanner {
maxw := int64(0)
maxh := int64(0)
greatestVal := int64(0)
for _, size := range formatList {
var biggerSide int64
if size.W > size.H {
biggerSide = size.W
} else {
biggerSide = size.H
}
if biggerSide > greatestVal || (biggerSide == greatestVal && size.W >= maxw && size.H >= maxh) {
greatestVal = biggerSide
maxh = size.H
maxw = size.W
}
}
bannerExt := openrtb_ext.ExtImpGumGumBanner{Si: slot, MaxW: float64(maxw), MaxH: float64(maxh)}
return bannerExt
}
func getMediaTypeForImpID(impID string, imps []openrtb2.Imp) openrtb_ext.BidType {
for _, imp := range imps {
if imp.ID == impID && imp.Banner != nil {
return openrtb_ext.BidTypeBanner
}
}
return openrtb_ext.BidTypeVideo
}
func validateVideoParams(video *openrtb2.Video) (err error) {
if video.W == 0 || video.H == 0 || video.MinDuration == 0 || video.MaxDuration == 0 || video.Placement == 0 || video.Linearity == 0 {
return &errortypes.BadInput{
Message: "Invalid or missing video field(s)",
}
}
return nil
}
// Builder builds a new instance of the GumGum adapter for the given bidder with the given config.
func Builder(bidderName openrtb_ext.BidderName, config config.Adapter, server config.Server) (adapters.Bidder, error) {
bidder := &GumGumAdapter{
URI: config.Endpoint,
}
return bidder, nil
}