Districtm Dmx: new adapter (prebid#1209)

Co-authored-by: steve-a-districtm <steve@districtm.net>

adapters/dmx/dmx.go

@@ -0,0 +1,296 @@
+package dmx
+
+import (
+	"encoding/json"
+	"errors"
+	"fmt"
+	"github.com/mxmCherry/openrtb"
+	"github.com/prebid/prebid-server/adapters"
+	"github.com/prebid/prebid-server/errortypes"
+	"github.com/prebid/prebid-server/openrtb_ext"
+	"net/http"
+	"net/url"
+	"strings"
+)
+
+type DmxAdapter struct {
+	endpoint string
+}
+
+func NewDmxBidder(endpoint string) *DmxAdapter {
+	return &DmxAdapter{endpoint: endpoint}
+}
+
+type dmxExt struct {
+	Bidder dmxParams `json:"bidder"`
+}
+
+type dmxParams struct {
+	TagId       string `json:"tagid,omitempty"`
+	DmxId       string `json:"dmxid,omitempty"`
+	MemberId    string `json:"memberid,omitempty"`
+	PublisherId string `json:"publisher_id,omitempty"`
+	SellerId    string `json:"seller_id,omitempty"`
+}
+
+func UserSellerOrPubId(str1, str2 string) string {
+	if str1 != "" {
+		return str1
+	}
+	return str2
+}
+
+func (adapter *DmxAdapter) MakeRequests(request *openrtb.BidRequest, req *adapters.ExtraRequestInfo) (reqsBidder []*adapters.RequestData, errs []error) {
+	var imps []openrtb.Imp
+	var rootExtInfo dmxExt
+	var publisherId string
+	var sellerId string
+	var userExt openrtb_ext.ExtUser
+	var anyHasId = false
+	var reqCopy openrtb.BidRequest = *request
+	var dmxReq *openrtb.BidRequest = &reqCopy
+
+	if request.User == nil {
+		if request.App == nil {
+			return nil, []error{errors.New("No user id or app id found. Could not send request to DMX.")}
+		}
+	}
+
+	if len(request.Imp) >= 1 {
+		err := json.Unmarshal(request.Imp[0].Ext, &rootExtInfo)
+		if err != nil {
+			errs = append(errs, err)
+		} else {
+			publisherId = UserSellerOrPubId(rootExtInfo.Bidder.PublisherId, rootExtInfo.Bidder.MemberId)
+			sellerId = rootExtInfo.Bidder.SellerId
+		}
+	}
+
+	if request.App != nil {
+		appCopy := *request.App
+		appPublisherCopy := *request.App.Publisher
+		dmxReq.App = &appCopy
+		dmxReq.App.Publisher = &appPublisherCopy
+		if dmxReq.App.ID != "" {
+			anyHasId = true
+		}
+	} else {
+		dmxReq.App = nil
+	}
+
+	if request.Site != nil {
+		siteCopy := *request.Site
+		sitePublisherCopy := *request.Site.Publisher
+		dmxReq.Site = &siteCopy
+		dmxReq.Site.Publisher = &sitePublisherCopy
+		if dmxReq.Site.Publisher != nil {
+			dmxReq.Site.Publisher.ID = publisherId
+		} else {
+			dmxReq.Site.Publisher = &openrtb.Publisher{ID: publisherId}
+		}
+	} else {
+		dmxReq.Site = nil
+	}
+
+	if request.User != nil {
+		userCopy := *request.User
+		dmxReq.User = &userCopy
+	} else {
+		dmxReq.User = nil
+	}
+
+	if dmxReq.User != nil {
+		if dmxReq.User.ID != "" {
+			anyHasId = true
+		}
+		if dmxReq.User.Ext != nil {
+			if err := json.Unmarshal(dmxReq.User.Ext, &userExt); err == nil {
+				if len(userExt.Eids) > 0 || (userExt.DigiTrust != nil && userExt.DigiTrust.ID != "") {
+					anyHasId = true
+				}
+			}
+		}
+	}
+
+	if anyHasId == false {
+		return nil, []error{errors.New("This request contained no identifier")}
+	}
+
+	for _, inst := range dmxReq.Imp {
+		var banner *openrtb.Banner
+		var video *openrtb.Video
+		var ins openrtb.Imp
+		var params dmxExt
+		const intVal int8 = 1
+		source := (*json.RawMessage)(&inst.Ext)
+		if err := json.Unmarshal(*source, &params); err != nil {
+			errs = append(errs, err)
+		}
+		if isDmxParams(params.Bidder) {
+			if inst.Banner != nil {
+				if len(inst.Banner.Format) != 0 {
+					banner = inst.Banner
+					if params.Bidder.PublisherId != "" || params.Bidder.MemberId != "" {
+						imps = fetchParams(params, inst, ins, imps, banner, nil, intVal)
+					} else {
+						return nil, []error{errors.New("Missing Params for auction to be send")}
+					}
+				}
+			}
+
+			if inst.Video != nil {
+				video = inst.Video
+				if params.Bidder.PublisherId != "" || params.Bidder.MemberId != "" {
+					imps = fetchParams(params, inst, ins, imps, nil, video, intVal)
+				} else {
+					return nil, []error{errors.New("Missing Params for auction to be send")}
+				}
+			}
+		}
+
+	}
+
+	dmxReq.Imp = imps
+
+	oJson, err := json.Marshal(dmxReq)
+
+	if err != nil {
+		errs = append(errs, err)
+		return nil, errs
+	}
+
+	headers := http.Header{}
+	headers.Add("Content-Type", "Application/json;charset=utf-8")
+	reqBidder := &adapters.RequestData{
+		Method:  "POST",
+		Uri:     adapter.endpoint + addParams(sellerId), //adapter.endpoint,
+		Body:    oJson,
+		Headers: headers,
+	}
+	reqsBidder = append(reqsBidder, reqBidder)
+	return
+}
+
+func (adapter *DmxAdapter) MakeBids(request *openrtb.BidRequest, externalRequest *adapters.RequestData, response *adapters.ResponseData) (*adapters.BidderResponse, []error) {
+	var errs []error
+
+	if http.StatusNoContent == response.StatusCode {
+		return nil, nil
+	}
+
+	if http.StatusBadRequest == response.StatusCode {
+		return nil, []error{&errortypes.BadInput{
+			Message: fmt.Sprintf("Unexpected status code 400"),
+		}}
+	}
+
+	if http.StatusOK != response.StatusCode {
+		return nil, []error{&errortypes.BadInput{
+			Message: fmt.Sprintf("Unexpected response no status code"),
+		}}
+	}
+
+	var bidResp openrtb.BidResponse
+
+	if err := json.Unmarshal(response.Body, &bidResp); err != nil {
+		return nil, []error{err}
+	}
+
+	bidResponse := adapters.NewBidderResponseWithBidsCapacity(5)
+
+	for _, sb := range bidResp.SeatBid {
+		for i := range sb.Bid {
+			bidType, err := getMediaTypeForImp(sb.Bid[i].ImpID, request.Imp)
+			if err != nil {
+				errs = append(errs, err)
+			} else {
+				b := &adapters.TypedBid{
+					Bid:     &sb.Bid[i],
+					BidType: bidType,
+				}
+				if b.BidType == openrtb_ext.BidTypeVideo {
+					b.Bid.AdM = videoImpInsertion(b.Bid)
+				}
+				bidResponse.Bids = append(bidResponse.Bids, b)
+			}
+		}
+	}
+	return bidResponse, errs
+
+}
+
+func fetchParams(params dmxExt, inst openrtb.Imp, ins openrtb.Imp, imps []openrtb.Imp, banner *openrtb.Banner, video *openrtb.Video, intVal int8) []openrtb.Imp {
+	if params.Bidder.TagId != "" {
+		ins = openrtb.Imp{
+			ID:     inst.ID,
+			TagID:  params.Bidder.TagId,
+			Ext:    inst.Ext,
+			Secure: &intVal,
+		}
+	}
+
+	if params.Bidder.DmxId != "" {
+		ins = openrtb.Imp{
+			ID:     inst.ID,
+			TagID:  params.Bidder.DmxId,
+			Ext:    inst.Ext,
+			Secure: &intVal,
+		}
+	}
+	if banner != nil {
+		ins.Banner = banner
+	}
+
+	if video != nil {
+		ins.Video = video
+	}
+
+	if ins.TagID == "" {
+		return imps
+	}
+	imps = append(imps, ins)
+	return imps
+}
+
+func addParams(str string) string {
+	if str != "" {
+		return "?sellerid=" + url.QueryEscape(str)
+	}
+	return ""
+}
+
+func getMediaTypeForImp(impID string, imps []openrtb.Imp) (openrtb_ext.BidType, error) {
+	mediaType := openrtb_ext.BidTypeBanner
+	for _, imp := range imps {
+		if imp.ID == impID {
+			if imp.Banner == nil && imp.Video != nil {
+				mediaType = openrtb_ext.BidTypeVideo
+			}
+			return mediaType, nil
+		}
+	}
+
+	// This shouldnt happen. Lets handle it just incase by returning an error.
+	return "", &errortypes.BadInput{
+		Message: fmt.Sprintf("Failed to find impression \"%s\" ", impID),
+	}
+}
+
+func videoImpInsertion(bid *openrtb.Bid) string {
+	adm := bid.AdM
+	nurl := bid.NURL
+	search := "</Impression>"
+	imp := "</Impression><Impression><![CDATA[%s]]></Impression>"
+	wrapped_nurl := fmt.Sprintf(imp, nurl)
+	results := strings.Replace(adm, search, wrapped_nurl, 1)
+	return results
+}
+
+func isDmxParams(t interface{}) bool {
+	switch t.(type) {
+	case dmxParams:
+		return true
+	default:
+		return false
+	}
+}