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lmkiviads.go
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lmkiviads.go
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package lmkiviads
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 bidType struct {
Type string `json:"type"`
}
type bidExt struct {
Prebid bidType `json:"prebid"`
}
type adapter struct {
endpoint *template.Template
}
func Builder(bidderName openrtb_ext.BidderName, config config.Adapter, server config.Server) (adapters.Bidder, error) {
tmpl, 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: tmpl,
}
return bidder, nil
}
func (a *adapter) buildEndpointFromRequest(imp *openrtb2.Imp) (string, error) {
var impExt adapters.ExtImpBidder
if err := json.Unmarshal(imp.Ext, &impExt); err != nil {
return "", &errortypes.BadInput{
Message: fmt.Sprintf("Failed to deserialize bidder impression extension: %v", err),
}
}
var kiviExt openrtb_ext.ExtLmKiviads
if err := json.Unmarshal(impExt.Bidder, &kiviExt); err != nil {
return "", &errortypes.BadInput{
Message: fmt.Sprintf("Failed to deserialize LmKiviads extension: %v", err),
}
}
endpointParams := macros.EndpointTemplateParams{
Host: kiviExt.Env,
SourceId: kiviExt.Pid,
}
return macros.ResolveMacros(a.endpoint, endpointParams)
}
func (a *adapter) MakeRequests(request *openrtb2.BidRequest, requestInfo *adapters.ExtraRequestInfo) ([]*adapters.RequestData, []error) {
var requests []*adapters.RequestData
var errs []error
headers := http.Header{}
headers.Add("Content-Type", "application/json;charset=utf-8")
headers.Add("Accept", "application/json")
requestCopy := *request
for _, imp := range request.Imp {
requestCopy.Imp = []openrtb2.Imp{imp}
endpoint, err := a.buildEndpointFromRequest(&imp)
if err != nil {
errs = append(errs, err)
continue
}
requestJSON, err := json.Marshal(requestCopy)
if err != nil {
errs = append(errs, err)
continue
}
request := &adapters.RequestData{
Method: http.MethodPost,
Body: requestJSON,
Uri: endpoint,
Headers: headers,
}
requests = append(requests, request)
}
return requests, errs
}
func (a *adapter) MakeBids(openRTBRequest *openrtb2.BidRequest, requestToBidder *adapters.RequestData, bidderRawResponse *adapters.ResponseData) (*adapters.BidderResponse, []error) {
if adapters.IsResponseStatusCodeNoContent(bidderRawResponse) {
return nil, nil
}
if bidderRawResponse.StatusCode == http.StatusServiceUnavailable {
return nil, []error{&errortypes.BadInput{
Message: "Bidder LmKiviads is unavailable. Please contact the bidder support.",
}}
}
if err := adapters.CheckResponseStatusCodeForErrors(bidderRawResponse); err != nil {
return nil, []error{err}
}
var bidResp openrtb2.BidResponse
if err := json.Unmarshal(bidderRawResponse.Body, &bidResp); err != nil {
return nil, []error{err}
}
if len(bidResp.SeatBid) == 0 {
return nil, []error{&errortypes.BadServerResponse{
Message: "Array SeatBid cannot be empty",
}}
}
return prepareBidResponse(bidResp.SeatBid)
}
func prepareBidResponse(seats []openrtb2.SeatBid) (*adapters.BidderResponse, []error) {
errs := []error{}
bidResponse := adapters.NewBidderResponseWithBidsCapacity(len(seats))
for _, seatBid := range seats {
for bidId, bid := range seatBid.Bid {
var bidExt bidExt
if err := json.Unmarshal(bid.Ext, &bidExt); err != nil {
errs = append(errs, &errortypes.BadServerResponse{
Message: fmt.Sprintf("Failed to parse Bid[%d].Ext: %s", bidId, err.Error()),
})
continue
}
bidType, err := openrtb_ext.ParseBidType(bidExt.Prebid.Type)
if err != nil {
errs = append(errs, &errortypes.BadServerResponse{
Message: fmt.Sprintf("Bid[%d].Ext.Prebid.Type expects one of the following values: 'banner', 'native', 'video', 'audio', got '%s'", bidId, bidExt.Prebid.Type),
})
continue
}
bidResponse.Bids = append(bidResponse.Bids, &adapters.TypedBid{
Bid: &seatBid.Bid[bidId],
BidType: bidType,
})
}
}
return bidResponse, errs
}