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onetag.go
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onetag.go
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package onetag
import (
"encoding/json"
"fmt"
"net/http"
"text/template"
"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/macros"
"github.com/prebid/prebid-server/openrtb_ext"
)
type adapter struct {
endpointTemplate *template.Template
}
func Builder(bidderName openrtb_ext.BidderName, config config.Adapter, server config.Server) (adapters.Bidder, error) {
template, err := template.New("endpointTemplate").Parse(config.Endpoint)
if err != nil {
return nil, fmt.Errorf("unable to parse endpoint url template: %v", err)
}
bidder := &adapter{
endpointTemplate: template,
}
return bidder, nil
}
func (a *adapter) MakeRequests(request *openrtb2.BidRequest, requestInfo *adapters.ExtraRequestInfo) ([]*adapters.RequestData, []error) {
pubID := ""
for idx, imp := range request.Imp {
onetagExt, err := getImpressionExt(imp)
if err != nil {
return nil, []error{err}
}
if onetagExt.PubId != "" {
if pubID == "" {
pubID = onetagExt.PubId
} else if pubID != onetagExt.PubId {
return nil, []error{&errortypes.BadInput{
Message: "There must be only one publisher ID",
}}
}
} else {
return nil, []error{&errortypes.BadInput{
Message: "The publisher ID must not be empty",
}}
}
request.Imp[idx].Ext = onetagExt.Ext
}
url, err := a.buildEndpointURL(pubID)
if err != nil {
return nil, []error{err}
}
requestJSON, err := json.Marshal(request)
if err != nil {
return nil, []error{err}
}
requestData := &adapters.RequestData{
Method: "POST",
Uri: url,
Body: requestJSON,
}
return []*adapters.RequestData{requestData}, nil
}
func getImpressionExt(imp openrtb2.Imp) (*openrtb_ext.ExtImpOnetag, 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 onetagExt openrtb_ext.ExtImpOnetag
if err := json.Unmarshal(bidderExt.Bidder, &onetagExt); err != nil {
return nil, &errortypes.BadInput{
Message: "Error while unmarshaling bidder extension",
}
}
return &onetagExt, nil
}
func (a *adapter) buildEndpointURL(pubID string) (string, error) {
endpointParams := macros.EndpointTemplateParams{PublisherID: pubID}
return macros.ResolveMacros(a.endpointTemplate, endpointParams)
}
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.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}
}
bidResponse := adapters.NewBidderResponseWithBidsCapacity(len(request.Imp))
bidResponse.Currency = response.Cur
for _, seatBid := range response.SeatBid {
for _, bid := range seatBid.Bid {
bidMediaType, err := getMediaTypeForBid(request.Imp, bid)
if err != nil {
return nil, []error{err}
}
b := &adapters.TypedBid{
Bid: &bid,
BidType: bidMediaType,
}
bidResponse.Bids = append(bidResponse.Bids, b)
}
}
return bidResponse, nil
}
func getMediaTypeForBid(impressions []openrtb2.Imp, bid openrtb2.Bid) (openrtb_ext.BidType, error) {
for _, impression := range impressions {
if impression.ID == bid.ImpID {
if impression.Banner != nil {
return openrtb_ext.BidTypeBanner, nil
}
if impression.Video != nil {
return openrtb_ext.BidTypeVideo, nil
}
if impression.Native != nil {
return openrtb_ext.BidTypeNative, nil
}
}
}
return "", &errortypes.BadServerResponse{
Message: fmt.Sprintf("The impression with ID %s is not present into the request", bid.ImpID),
}
}