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limelightDigital.go
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limelightDigital.go
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package limelightDigital
import (
"encoding/json"
"errors"
"fmt"
"net/http"
"strings"
"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 {
endpointTemplate *template.Template
}
// Builder builds a new instance of the Limelight Digital adapter for the given bidder with the given config.
func Builder(bidderName openrtb_ext.BidderName, config config.Adapter, server config.Server) (adapters.Bidder, error) {
if config.Endpoint == "" {
return nil, errors.New("Endpoint adapter parameter is not provided")
}
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) {
var requests []*adapters.RequestData
var errors []error
requestCopy := *request
for _, imp := range request.Imp {
limelightDigitalExt, err := getImpressionExt(&imp)
if err != nil {
errors = append(errors, err)
continue
}
url, err := a.buildEndpointURL(limelightDigitalExt)
if err != nil {
errors = append(errors, err)
continue
}
// Check if imp comes with bid floor amount defined in a foreign currency
if imp.BidFloor > 0 && imp.BidFloorCur != "" && strings.ToUpper(imp.BidFloorCur) != "USD" {
// Convert to US dollars
convertedValue, err := requestInfo.ConvertCurrency(imp.BidFloor, imp.BidFloorCur, "USD")
if err != nil {
errors = append(errors, err)
continue
}
// 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 = "USD"
imp.BidFloor = convertedValue
}
requestCopy.ID = request.ID + "-" + imp.ID
requestCopy.Imp = []openrtb2.Imp{imp}
requestCopy.Ext = nil
requestJSON, err := json.Marshal(requestCopy)
if err != nil {
errors = append(errors, err)
} else {
requestData := &adapters.RequestData{
Method: "POST",
Uri: url,
Body: requestJSON,
}
requests = append(requests, requestData)
}
}
return requests, errors
}
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}
}
if len(responseData.Body) == 0 {
return nil, nil
}
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
var errs []error
for _, seatBid := range response.SeatBid {
for i, bid := range seatBid.Bid {
bidType, err := getMediaTypeForBid(bid.ImpID, request.Imp)
if err != nil {
errs = append(errs, err)
} else {
b := &adapters.TypedBid{
Bid: &seatBid.Bid[i],
BidType: bidType,
}
bidResponse.Bids = append(bidResponse.Bids, b)
}
}
}
return bidResponse, errs
}
func getImpressionExt(imp *openrtb2.Imp) (*openrtb_ext.ImpExtLimelightDigital, error) {
var bidderExt adapters.ExtImpBidder
if err := json.Unmarshal(imp.Ext, &bidderExt); err != nil {
return nil, &errortypes.BadInput{
Message: "ext.bidder is not provided",
}
}
var limelightDigitalExt openrtb_ext.ImpExtLimelightDigital
if err := json.Unmarshal(bidderExt.Bidder, &limelightDigitalExt); err != nil {
return nil, &errortypes.BadInput{
Message: "ext.bidder is not provided",
}
}
imp.Ext = nil
return &limelightDigitalExt, nil
}
func (a *adapter) buildEndpointURL(params *openrtb_ext.ImpExtLimelightDigital) (string, error) {
endpointParams := macros.EndpointTemplateParams{
Host: params.Host,
PublisherID: params.PublisherID.String(),
}
return macros.ResolveMacros(a.endpointTemplate, endpointParams)
}
func getMediaTypeForBid(impId string, imps []openrtb2.Imp) (openrtb_ext.BidType, error) {
for _, imp := range imps {
if imp.ID == impId {
if imp.Banner != nil {
return openrtb_ext.BidTypeBanner, nil
} else if imp.Video != nil {
return openrtb_ext.BidTypeVideo, nil
} else if imp.Audio != nil {
return openrtb_ext.BidTypeAudio, nil
} else if imp.Native != nil {
return openrtb_ext.BidTypeNative, nil
}
return "", fmt.Errorf("unknown media type of imp: %s", impId)
}
}
return "", fmt.Errorf("bid contains unknown imp id: %s", impId)
}