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lemmadigital.go
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lemmadigital.go
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package lemmadigital
import (
"encoding/json"
"errors"
"fmt"
"strconv"
"text/template"
"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/macros"
"github.com/prebid/prebid-server/v2/openrtb_ext"
)
type adapter struct {
endpoint *template.Template
}
// Builder builds a new instance of the Lemmadigital adapter for the given bidder with the given config.
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{
endpoint: template,
}
return bidder, nil
}
func (a *adapter) MakeRequests(request *openrtb2.BidRequest, requestInfo *adapters.ExtraRequestInfo) ([]*adapters.RequestData, []error) {
if len(request.Imp) == 0 {
return nil, []error{errors.New("Impression array should not be empty")}
}
var bidderExt adapters.ExtImpBidder
if err := json.Unmarshal(request.Imp[0].Ext, &bidderExt); err != nil {
return nil, []error{&errortypes.BadInput{
Message: fmt.Sprintf("Invalid imp.ext for impression index %d. Error Infomation: %s", 0, err.Error()),
}}
}
var impExt openrtb_ext.ImpExtLemmaDigital
if err := json.Unmarshal(bidderExt.Bidder, &impExt); err != nil {
return nil, []error{&errortypes.BadInput{
Message: fmt.Sprintf("Invalid imp.ext.bidder for impression index %d. Error Infomation: %s", 0, err.Error()),
}}
}
endpoint, err := a.buildEndpointURL(impExt)
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: endpoint,
Body: requestJSON,
ImpIDs: openrtb_ext.GetImpIDs(request.Imp),
}
return []*adapters.RequestData{requestData}, nil
}
func (a *adapter) MakeBids(request *openrtb2.BidRequest, requestData *adapters.RequestData, responseData *adapters.ResponseData) (*adapters.BidderResponse, []error) {
if adapters.IsResponseStatusCodeNoContent(responseData) {
return nil, nil
}
if err := adapters.CheckResponseStatusCodeForErrors(responseData); err != nil {
return nil, []error{err}
}
var response openrtb2.BidResponse
if err := json.Unmarshal(responseData.Body, &response); err != nil {
return nil, []error{err}
}
bidType := openrtb_ext.BidTypeBanner
if nil != request.Imp[0].Video {
bidType = openrtb_ext.BidTypeVideo
}
bidResponse := adapters.NewBidderResponseWithBidsCapacity(len(request.Imp))
if len(response.Cur) > 0 {
bidResponse.Currency = response.Cur
}
if len(response.SeatBid) > 0 {
for i := range response.SeatBid[0].Bid {
b := &adapters.TypedBid{
Bid: &response.SeatBid[0].Bid[i],
BidType: bidType,
}
bidResponse.Bids = append(bidResponse.Bids, b)
}
}
return bidResponse, nil
}
func (a *adapter) buildEndpointURL(params openrtb_ext.ImpExtLemmaDigital) (string, error) {
endpointParams := macros.EndpointTemplateParams{PublisherID: strconv.Itoa(params.PublisherId),
AdUnit: strconv.Itoa(params.AdId)}
return macros.ResolveMacros(a.endpoint, endpointParams)
}