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openweb.go
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openweb.go
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package openweb
import (
"encoding/json"
"fmt"
"net/http"
"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/openrtb_ext"
)
type adapter struct {
endpoint string
}
type openwebImpExt struct {
OpenWeb openrtb_ext.ExtImpOpenWeb `json:"openweb"`
}
func (a *adapter) MakeRequests(request *openrtb2.BidRequest, reqInfo *adapters.ExtraRequestInfo) ([]*adapters.RequestData, []error) {
totalImps := len(request.Imp)
errors := make([]error, 0, totalImps)
sourceIdToImpIds := make(map[int][]int)
var sourceIds []int
for i := 0; i < totalImps; i++ {
sourceId, err := validateImpression(&request.Imp[i])
if err != nil {
errors = append(errors, err)
continue
}
if _, ok := sourceIdToImpIds[sourceId]; !ok {
sourceIdToImpIds[sourceId] = make([]int, 0, totalImps-i)
sourceIds = append(sourceIds, sourceId)
}
sourceIdToImpIds[sourceId] = append(sourceIdToImpIds[sourceId], i)
}
totalReqs := len(sourceIdToImpIds)
if totalReqs == 0 {
return nil, errors
}
headers := http.Header{}
headers.Add("Content-Type", "application/json;charset=utf-8")
headers.Add("Accept", "application/json")
reqs := make([]*adapters.RequestData, 0, totalReqs)
imps := request.Imp
reqCopy := *request
reqCopy.Imp = make([]openrtb2.Imp, totalImps)
for _, sourceId := range sourceIds {
impIds := sourceIdToImpIds[sourceId]
reqCopy.Imp = reqCopy.Imp[:0]
for i := 0; i < len(impIds); i++ {
reqCopy.Imp = append(reqCopy.Imp, imps[impIds[i]])
}
body, err := json.Marshal(reqCopy)
if err != nil {
errors = append(errors, fmt.Errorf("error while encoding bidRequest, err: %s", err))
return nil, errors
}
reqs = append(reqs, &adapters.RequestData{
Method: "POST",
Uri: a.endpoint + fmt.Sprintf("?aid=%d", sourceId),
Body: body,
Headers: headers,
ImpIDs: openrtb_ext.GetImpIDs(reqCopy.Imp),
})
}
return reqs, errors
}
func (a *adapter) MakeBids(bidReq *openrtb2.BidRequest, unused *adapters.RequestData, httpRes *adapters.ResponseData) (*adapters.BidderResponse, []error) {
if httpRes.StatusCode == http.StatusNoContent {
return nil, nil
}
if httpRes.StatusCode != http.StatusOK {
return nil, []error{&errortypes.BadServerResponse{
Message: fmt.Sprintf("Remote server error: %s", httpRes.Body),
}}
}
var bidResp openrtb2.BidResponse
if err := json.Unmarshal(httpRes.Body, &bidResp); err != nil {
return nil, []error{&errortypes.BadServerResponse{
Message: fmt.Sprintf("error while decoding response, err: %s", err),
}}
}
bidResponse := adapters.NewBidderResponse()
var errors []error
for _, sb := range bidResp.SeatBid {
for i := 0; i < len(sb.Bid); i++ {
bid := sb.Bid[i]
mediaType, impOK := getBidType(bidReq.Imp, bid.ImpID)
if !impOK {
errors = append(errors, &errortypes.BadServerResponse{
Message: fmt.Sprintf("ignoring bid id=%s, request doesn't contain any impression with id=%s", bid.ID, bid.ImpID),
})
continue
}
bidResponse.Bids = append(bidResponse.Bids, &adapters.TypedBid{
Bid: &bid,
BidType: mediaType,
})
}
}
return bidResponse, errors
}
func getBidType(imps []openrtb2.Imp, impId string) (mediaType openrtb_ext.BidType, ok bool) {
mediaType = openrtb_ext.BidTypeBanner
for _, imp := range imps {
if imp.ID == impId {
ok = true
if imp.Video != nil {
mediaType = openrtb_ext.BidTypeVideo
}
break
}
}
return
}
func validateImpression(imp *openrtb2.Imp) (int, error) {
var bidderExt adapters.ExtImpBidder
if err := json.Unmarshal(imp.Ext, &bidderExt); err != nil {
return 0, &errortypes.BadInput{
Message: fmt.Sprintf("ignoring imp id=%s, error while decoding extImpBidder, err: %s", imp.ID, err),
}
}
impExt := openrtb_ext.ExtImpOpenWeb{}
err := json.Unmarshal(bidderExt.Bidder, &impExt)
if err != nil {
return 0, &errortypes.BadInput{
Message: fmt.Sprintf("ignoring imp id=%s, error while decoding impExt, err: %s", imp.ID, err),
}
}
var impExtBuffer []byte
impExtBuffer, err = json.Marshal(&openwebImpExt{
OpenWeb: impExt,
})
if err != nil {
return 0, &errortypes.BadInput{
Message: fmt.Sprintf("ignoring imp id=%s, error while encoding impExt, err: %s", imp.ID, err),
}
}
if impExt.BidFloor > 0 {
imp.BidFloor = impExt.BidFloor
}
imp.Ext = impExtBuffer
return impExt.SourceID, nil
}
// Builder builds a new instance of the OpenWeb adapter for the given bidder with the given config.
func Builder(bidderName openrtb_ext.BidderName, config config.Adapter, server config.Server) (adapters.Bidder, error) {
bidder := &adapter{
endpoint: config.Endpoint,
}
return bidder, nil
}