github.com/prebid/prebid-server@v0.275.0/adapters/bidstack/bidstack.go (about)

     1  package bidstack
     2  
     3  import (
     4  	"encoding/json"
     5  	"errors"
     6  	"fmt"
     7  	"net/http"
     8  	"strings"
     9  
    10  	"github.com/prebid/openrtb/v19/openrtb2"
    11  
    12  	"github.com/prebid/prebid-server/adapters"
    13  	"github.com/prebid/prebid-server/config"
    14  	"github.com/prebid/prebid-server/openrtb_ext"
    15  )
    16  
    17  const (
    18  	currencyUSDISO4217 = "USD"
    19  
    20  	headerKeyAuthorization         = "Authorization"
    21  	headerValueAuthorizationBearer = "Bearer "
    22  	headerKeyContentType           = "Content-Type"
    23  
    24  	contentTypeApplicationJSON = "application/json"
    25  )
    26  
    27  type adapter struct {
    28  	endpoint string
    29  }
    30  
    31  // Builder builds a new instance of the Bidstack adapter for the given bidder with the given config.
    32  func Builder(_ openrtb_ext.BidderName, config config.Adapter, _ config.Server) (adapters.Bidder, error) {
    33  	bidder := &adapter{
    34  		endpoint: config.Endpoint,
    35  	}
    36  
    37  	return bidder, nil
    38  }
    39  
    40  func (a *adapter) MakeRequests(request *openrtb2.BidRequest, reqInfo *adapters.ExtraRequestInfo) ([]*adapters.RequestData, []error) {
    41  	headers, err := prepareHeaders(request)
    42  	if err != nil {
    43  		return nil, []error{fmt.Errorf("headers prepare: %v", err)}
    44  	}
    45  
    46  	for i := range request.Imp {
    47  		imp := &request.Imp[i]
    48  		if imp.BidFloor > 0 && imp.BidFloorCur != "" && strings.ToUpper(imp.BidFloorCur) != currencyUSDISO4217 {
    49  			convertedValue, err := reqInfo.ConvertCurrency(imp.BidFloor, imp.BidFloorCur, currencyUSDISO4217)
    50  			if err != nil {
    51  				return nil, []error{err}
    52  			}
    53  			imp.BidFloorCur = currencyUSDISO4217
    54  			imp.BidFloor = convertedValue
    55  		}
    56  	}
    57  
    58  	requestJSON, err := json.Marshal(request)
    59  	if err != nil {
    60  		return nil, []error{fmt.Errorf("bid request marshal: %v", err)}
    61  	}
    62  
    63  	requestData := &adapters.RequestData{
    64  		Method:  "POST",
    65  		Uri:     a.endpoint,
    66  		Headers: headers,
    67  		Body:    requestJSON,
    68  	}
    69  
    70  	return []*adapters.RequestData{requestData}, nil
    71  }
    72  
    73  func (a *adapter) MakeBids(request *openrtb2.BidRequest, _ *adapters.RequestData, responseData *adapters.ResponseData) (*adapters.BidderResponse, []error) {
    74  	switch responseData.StatusCode {
    75  	case http.StatusNoContent:
    76  		return nil, nil
    77  	case http.StatusBadRequest:
    78  		return nil, []error{errors.New("bad request from publisher")}
    79  	case http.StatusOK:
    80  		break
    81  	default:
    82  		return nil, []error{fmt.Errorf("unexpected response status code: %v", responseData.StatusCode)}
    83  	}
    84  
    85  	var response openrtb2.BidResponse
    86  	if err := json.Unmarshal(responseData.Body, &response); err != nil {
    87  		return nil, []error{fmt.Errorf("bid response unmarshal: %v", err)}
    88  	}
    89  
    90  	bidResponse := adapters.NewBidderResponseWithBidsCapacity(len(request.Imp))
    91  	bidResponse.Currency = response.Cur
    92  	for _, seatBid := range response.SeatBid {
    93  		for i := range seatBid.Bid {
    94  			b := &adapters.TypedBid{
    95  				Bid:     &seatBid.Bid[i],
    96  				BidType: openrtb_ext.BidTypeVideo,
    97  			}
    98  			bidResponse.Bids = append(bidResponse.Bids, b)
    99  		}
   100  	}
   101  
   102  	return bidResponse, nil
   103  }
   104  
   105  func prepareHeaders(request *openrtb2.BidRequest) (headers http.Header, err error) {
   106  	bidderImpExt, err := getBidderExt(request.Imp[0])
   107  	if err != nil {
   108  		return nil, fmt.Errorf("get bidder ext: %v", err)
   109  	}
   110  
   111  	return http.Header{
   112  		headerKeyContentType:   {contentTypeApplicationJSON},
   113  		headerKeyAuthorization: {headerValueAuthorizationBearer + bidderImpExt.PublisherID},
   114  	}, nil
   115  }
   116  
   117  func getBidderExt(imp openrtb2.Imp) (bidderImpExt openrtb_ext.ImpExtBidstack, err error) {
   118  	var impExt adapters.ExtImpBidder
   119  	if err = json.Unmarshal(imp.Ext, &impExt); err != nil {
   120  		return bidderImpExt, fmt.Errorf("imp ext: %v", err)
   121  	}
   122  	if err = json.Unmarshal(impExt.Bidder, &bidderImpExt); err != nil {
   123  		return bidderImpExt, fmt.Errorf("bidder ext: %v", err)
   124  	}
   125  	return bidderImpExt, nil
   126  }