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silvermob.go
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silvermob.go
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package silvermob
import (
"encoding/json"
"fmt"
"net/http"
"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 SilverMobAdapter struct {
endpoint *template.Template
}
func isValidHost(host string) bool {
return host == "eu" || host == "us" || host == "apac"
}
// Builder builds a new instance of the SilverMob 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 := &SilverMobAdapter{
endpoint: template,
}
return bidder, nil
}
func GetHeaders(request *openrtb2.BidRequest) *http.Header {
headers := http.Header{}
headers.Add("Content-Type", "application/json;charset=utf-8")
headers.Add("Accept", "application/json")
headers.Add("X-Openrtb-Version", "2.5")
if request.Device != nil {
if len(request.Device.UA) > 0 {
headers.Add("User-Agent", request.Device.UA)
}
if len(request.Device.IPv6) > 0 {
headers.Add("X-Forwarded-For", request.Device.IPv6)
}
if len(request.Device.IP) > 0 {
headers.Add("X-Forwarded-For", request.Device.IP)
}
}
return &headers
}
func (a *SilverMobAdapter) MakeRequests(
openRTBRequest *openrtb2.BidRequest,
reqInfo *adapters.ExtraRequestInfo,
) (
[]*adapters.RequestData,
[]error,
) {
requestCopy := *openRTBRequest
impCount := len(openRTBRequest.Imp)
requestData := make([]*adapters.RequestData, 0, impCount)
errs := []error{}
var err error
for _, imp := range openRTBRequest.Imp {
var silvermobExt *openrtb_ext.ExtSilverMob
silvermobExt, err = a.getImpressionExt(&imp)
if err != nil {
errs = append(errs, err)
continue
}
url, err := a.buildEndpointURL(silvermobExt)
if err != nil {
errs = append(errs, err)
continue
}
requestCopy.Imp = []openrtb2.Imp{imp}
reqJSON, err := json.Marshal(requestCopy)
if err != nil {
errs = append(errs, err)
continue
}
reqData := &adapters.RequestData{
Method: http.MethodPost,
Body: reqJSON,
Uri: url,
Headers: *GetHeaders(&requestCopy),
ImpIDs: openrtb_ext.GetImpIDs(requestCopy.Imp),
}
requestData = append(requestData, reqData)
}
return requestData, errs
}
func (a *SilverMobAdapter) getImpressionExt(imp *openrtb2.Imp) (*openrtb_ext.ExtSilverMob, error) {
var bidderExt adapters.ExtImpBidder
if err := json.Unmarshal(imp.Ext, &bidderExt); err != nil {
return nil, &errortypes.BadInput{
Message: fmt.Sprintf("error unmarshaling imp.ext: %s", err.Error()),
}
}
var silvermobExt openrtb_ext.ExtSilverMob
if err := json.Unmarshal(bidderExt.Bidder, &silvermobExt); err != nil {
return nil, &errortypes.BadInput{
Message: fmt.Sprintf("error unmarshaling imp.ext.bidder: %s", err.Error()),
}
}
return &silvermobExt, nil
}
func (a *SilverMobAdapter) buildEndpointURL(params *openrtb_ext.ExtSilverMob) (string, error) {
if isValidHost(params.Host) {
endpointParams := macros.EndpointTemplateParams{ZoneID: params.ZoneID, Host: params.Host}
return macros.ResolveMacros(a.endpoint, endpointParams)
} else {
return "", &errortypes.BadInput{
Message: fmt.Sprintf("invalid host %s", params.Host),
}
}
}
func (a *SilverMobAdapter) MakeBids(
openRTBRequest *openrtb2.BidRequest,
requestToBidder *adapters.RequestData,
bidderRawResponse *adapters.ResponseData,
) (
bidderResponse *adapters.BidderResponse,
errs []error,
) {
if bidderRawResponse.StatusCode == http.StatusNoContent {
return nil, nil
}
if bidderRawResponse.StatusCode == http.StatusBadRequest {
return nil, []error{&errortypes.BadInput{
Message: fmt.Sprintf("Bad Request status code: %d. Run with request.debug = 1 for more info", bidderRawResponse.StatusCode),
}}
}
if bidderRawResponse.StatusCode != http.StatusOK {
return nil, []error{fmt.Errorf("Unexpected status code: %d. Run with request.debug = 1 for more info", bidderRawResponse.StatusCode)}
}
responseBody := bidderRawResponse.Body
var bidResp openrtb2.BidResponse
if err := json.Unmarshal(responseBody, &bidResp); err != nil {
return nil, []error{&errortypes.BadServerResponse{
Message: fmt.Sprintf("Error unmarshaling server Response: %s", err),
}}
}
if len(bidResp.SeatBid) == 0 {
return nil, []error{&errortypes.BadServerResponse{
Message: "Empty SeatBid array",
}}
}
bidResponse := adapters.NewBidderResponseWithBidsCapacity(1)
for _, sb := range bidResp.SeatBid {
for _, bid := range sb.Bid {
bidResponse.Bids = append(bidResponse.Bids, &adapters.TypedBid{
Bid: &bid,
BidType: getMediaTypeForImp(bid.ImpID, openRTBRequest.Imp),
})
}
}
return bidResponse, nil
}
func getMediaTypeForImp(impId string, imps []openrtb2.Imp) openrtb_ext.BidType {
mediaType := openrtb_ext.BidTypeBanner
for _, imp := range imps {
if imp.ID == impId {
if imp.Video != nil {
mediaType = openrtb_ext.BidTypeVideo
} else if imp.Native != nil {
mediaType = openrtb_ext.BidTypeNative
}
return mediaType
}
}
return mediaType
}