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rtbhouse.go
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rtbhouse.go
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package rtbhouse
import (
"encoding/json"
"errors"
"fmt"
"net/http"
"strings"
"github.com/buger/jsonparser"
"github.com/prebid/openrtb/v20/openrtb2"
"github.com/prebid/prebid-server/v2/adapters"
"github.com/prebid/prebid-server/v2/config"
"github.com/prebid/prebid-server/v2/errortypes"
"github.com/prebid/prebid-server/v2/openrtb_ext"
)
const (
BidderCurrency string = "USD"
)
// RTBHouseAdapter implements the Bidder interface.
type RTBHouseAdapter struct {
endpoint string
}
// Builder builds a new instance of the RTBHouse 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 := &RTBHouseAdapter{
endpoint: config.Endpoint,
}
return bidder, nil
}
// MakeRequests prepares the HTTP requests which should be made to fetch bids.
func (adapter *RTBHouseAdapter) MakeRequests(
openRTBRequest *openrtb2.BidRequest,
reqInfo *adapters.ExtraRequestInfo,
) (
requestsToBidder []*adapters.RequestData,
errs []error,
) {
reqCopy := *openRTBRequest
reqCopy.Imp = []openrtb2.Imp{}
for _, imp := range openRTBRequest.Imp {
var bidFloorCur = imp.BidFloorCur
var bidFloor = imp.BidFloor
if bidFloorCur == "" && bidFloor == 0 {
rtbhouseExt, err := getImpressionExt(imp)
if err != nil {
return nil, []error{err}
}
if rtbhouseExt.BidFloor > 0 {
bidFloor = rtbhouseExt.BidFloor
bidFloorCur = BidderCurrency
if len(reqCopy.Cur) > 0 {
bidFloorCur = reqCopy.Cur[0]
}
}
}
// Check if imp comes with bid floor amount defined in a foreign currency
if bidFloor > 0 && bidFloorCur != "" && strings.ToUpper(bidFloorCur) != BidderCurrency {
// Convert to US dollars
convertedValue, err := reqInfo.ConvertCurrency(bidFloor, bidFloorCur, BidderCurrency)
if err != nil {
return nil, []error{err}
}
bidFloorCur = BidderCurrency
bidFloor = convertedValue
}
if bidFloor > 0 && bidFloorCur == BidderCurrency {
// Update after conversion. All imp elements inside request.Imp are shallow copies
// therefore, their non-pointer values are not shared memory and are safe to modify.
imp.BidFloorCur = bidFloorCur
imp.BidFloor = bidFloor
}
// Set the CUR of bid to BIDDER_CURRENCY after converting all floors
reqCopy.Cur = []string{BidderCurrency}
reqCopy.Imp = append(reqCopy.Imp, imp)
}
openRTBRequestJSON, err := json.Marshal(reqCopy)
if err != nil {
errs = append(errs, err)
return nil, errs
}
headers := http.Header{}
headers.Add("Content-Type", "application/json;charset=utf-8")
requestToBidder := &adapters.RequestData{
Method: "POST",
Uri: adapter.endpoint,
Body: openRTBRequestJSON,
Headers: headers,
ImpIDs: openrtb_ext.GetImpIDs(reqCopy.Imp),
}
requestsToBidder = append(requestsToBidder, requestToBidder)
return requestsToBidder, errs
}
func getImpressionExt(imp openrtb2.Imp) (*openrtb_ext.ExtImpRTBHouse, error) {
var bidderExt adapters.ExtImpBidder
if err := json.Unmarshal(imp.Ext, &bidderExt); err != nil {
return nil, &errortypes.BadInput{
Message: "Bidder extension not provided or can't be unmarshalled",
}
}
var rtbhouseExt openrtb_ext.ExtImpRTBHouse
if err := json.Unmarshal(bidderExt.Bidder, &rtbhouseExt); err != nil {
return nil, &errortypes.BadInput{
Message: "Error while unmarshaling bidder extension",
}
}
return &rtbhouseExt, nil
}
const unexpectedStatusCodeFormat = "" +
"Unexpected status code: %d. Run with request.debug = 1 for more info"
// MakeBids unpacks the server's response into Bids.
func (adapter *RTBHouseAdapter) MakeBids(
openRTBRequest *openrtb2.BidRequest,
requestToBidder *adapters.RequestData,
bidderRawResponse *adapters.ResponseData,
) (
bidderResponse *adapters.BidderResponse,
errs []error,
) {
switch bidderRawResponse.StatusCode {
case http.StatusOK:
break
case http.StatusNoContent:
return nil, nil
case http.StatusBadRequest:
err := &errortypes.BadInput{
Message: fmt.Sprintf(unexpectedStatusCodeFormat, bidderRawResponse.StatusCode),
}
return nil, []error{err}
default:
err := &errortypes.BadServerResponse{
Message: fmt.Sprintf(unexpectedStatusCodeFormat, bidderRawResponse.StatusCode),
}
return nil, []error{err}
}
var openRTBBidderResponse openrtb2.BidResponse
if err := json.Unmarshal(bidderRawResponse.Body, &openRTBBidderResponse); err != nil {
return nil, []error{err}
}
bidsCapacity := len(openRTBBidderResponse.SeatBid[0].Bid)
bidderResponse = adapters.NewBidderResponseWithBidsCapacity(bidsCapacity)
var typedBid *adapters.TypedBid
for _, seatBid := range openRTBBidderResponse.SeatBid {
for _, bid := range seatBid.Bid {
bid := bid // pin! -> https://github.com/kyoh86/scopelint#whats-this
bidType, err := getMediaTypeForBid(bid)
if err != nil {
errs = append(errs, err)
continue
} else {
typedBid = &adapters.TypedBid{
Bid: &bid,
BidType: bidType,
}
// for native bid responses fix Adm field
if typedBid.BidType == openrtb_ext.BidTypeNative {
bid.AdM, err = getNativeAdm(bid.AdM)
if err != nil {
errs = append(errs, err)
continue
}
}
bidderResponse.Bids = append(bidderResponse.Bids, typedBid)
}
}
}
bidderResponse.Currency = BidderCurrency
return bidderResponse, errs
}
func getMediaTypeForBid(bid openrtb2.Bid) (openrtb_ext.BidType, error) {
switch bid.MType {
case openrtb2.MarkupBanner:
return openrtb_ext.BidTypeBanner, nil
case openrtb2.MarkupNative:
return openrtb_ext.BidTypeNative, nil
default:
return "", fmt.Errorf("unrecognized bid type in response from rtbhouse for bid %s", bid.ImpID)
}
}
func getNativeAdm(adm string) (string, error) {
nativeAdm := make(map[string]interface{})
err := json.Unmarshal([]byte(adm), &nativeAdm)
if err != nil {
return adm, errors.New("unable to unmarshal native adm")
}
// move bid.adm.native to bid.adm
if _, ok := nativeAdm["native"]; ok {
//using jsonparser to avoid marshaling, encode escape, etc.
value, dataType, _, err := jsonparser.Get([]byte(adm), string(openrtb_ext.BidTypeNative))
if err != nil || dataType != jsonparser.Object {
return adm, errors.New("unable to get native adm")
}
adm = string(value)
}
return adm, nil
}