github.com/prebid/prebid-server/v2@v2.18.0/adapters/adot/adot.go (about)

     1  package adot
     2  
     3  import (
     4  	"encoding/json"
     5  	"fmt"
     6  	"net/http"
     7  	"strconv"
     8  	"strings"
     9  
    10  	"github.com/prebid/openrtb/v20/openrtb2"
    11  	"github.com/prebid/prebid-server/v2/adapters"
    12  	"github.com/prebid/prebid-server/v2/config"
    13  	"github.com/prebid/prebid-server/v2/errortypes"
    14  	"github.com/prebid/prebid-server/v2/openrtb_ext"
    15  )
    16  
    17  type adapter struct {
    18  	endpoint string
    19  }
    20  
    21  type adotBidExt struct {
    22  	Adot bidExt `json:"adot"`
    23  }
    24  
    25  type bidExt struct {
    26  	MediaType string `json:"media_type"`
    27  }
    28  
    29  // Builder builds a new instance of the Adot adapter for the given bidder with the given config.
    30  func Builder(bidderName openrtb_ext.BidderName, config config.Adapter, server config.Server) (adapters.Bidder, error) {
    31  	bidder := &adapter{
    32  		endpoint: config.Endpoint,
    33  	}
    34  	return bidder, nil
    35  }
    36  
    37  // MakeRequests makes the HTTP requests which should be made to fetch bids.
    38  func (a *adapter) MakeRequests(request *openrtb2.BidRequest, reqInfo *adapters.ExtraRequestInfo) ([]*adapters.RequestData, []error) {
    39  	var reqJSON []byte
    40  	var publisherPath string
    41  	var err error
    42  
    43  	if reqJSON, err = json.Marshal(request); err != nil {
    44  		return nil, []error{fmt.Errorf("unable to marshal openrtb request (%v)", err)}
    45  	}
    46  
    47  	headers := http.Header{}
    48  	headers.Add("Content-Type", "application/json;charset=utf-8")
    49  
    50  	if adotExt := getImpAdotExt(&request.Imp[0]); adotExt != nil {
    51  		publisherPath = adotExt.PublisherPath
    52  	} else {
    53  		publisherPath = ""
    54  	}
    55  
    56  	endpoint := strings.Replace(a.endpoint, "{PUBLISHER_PATH}", publisherPath, -1)
    57  
    58  	return []*adapters.RequestData{{
    59  		Method:  "POST",
    60  		Uri:     endpoint,
    61  		Body:    reqJSON,
    62  		Headers: headers,
    63  		ImpIDs:  openrtb_ext.GetImpIDs(request.Imp),
    64  	}}, nil
    65  }
    66  
    67  // MakeBids unpacks the server's response into Bids.
    68  // The bidder return a status code 204 when it cannot delivery an ad.
    69  func (a *adapter) MakeBids(internalRequest *openrtb2.BidRequest, externalRequest *adapters.RequestData, response *adapters.ResponseData) (*adapters.BidderResponse, []error) {
    70  	if response.StatusCode == http.StatusNoContent {
    71  		return nil, nil
    72  	}
    73  
    74  	if response.StatusCode == http.StatusBadRequest {
    75  		return nil, []error{&errortypes.BadInput{
    76  			Message: fmt.Sprintf("Unexpected status code: %d. Run with request.debug = 1 for more info", response.StatusCode),
    77  		}}
    78  	}
    79  
    80  	if response.StatusCode != http.StatusOK {
    81  		return nil, []error{&errortypes.BadServerResponse{
    82  			Message: fmt.Sprintf("Unexpected status code: %d. Run with request.debug = 1 for more info", response.StatusCode),
    83  		}}
    84  	}
    85  
    86  	var bidResp openrtb2.BidResponse
    87  	if err := json.Unmarshal(response.Body, &bidResp); err != nil {
    88  		return nil, []error{err}
    89  	}
    90  
    91  	bidsCapacity := 1
    92  	if len(bidResp.SeatBid) > 0 {
    93  		bidsCapacity = len(bidResp.SeatBid[0].Bid)
    94  	}
    95  	bidResponse := adapters.NewBidderResponseWithBidsCapacity(bidsCapacity)
    96  
    97  	for _, sb := range bidResp.SeatBid {
    98  		for i := range sb.Bid {
    99  			if bidType, err := getMediaTypeForBid(&sb.Bid[i]); err == nil {
   100  				resolveMacros(&sb.Bid[i])
   101  				bidResponse.Bids = append(bidResponse.Bids, &adapters.TypedBid{
   102  					Bid:     &sb.Bid[i],
   103  					BidType: bidType,
   104  				})
   105  			}
   106  		}
   107  	}
   108  
   109  	return bidResponse, nil
   110  }
   111  
   112  // getMediaTypeForBid determines which type of bid.
   113  func getMediaTypeForBid(bid *openrtb2.Bid) (openrtb_ext.BidType, error) {
   114  	if bid == nil {
   115  		return "", fmt.Errorf("the bid request object is nil")
   116  	}
   117  
   118  	var impExt adotBidExt
   119  	if err := json.Unmarshal(bid.Ext, &impExt); err == nil {
   120  		switch impExt.Adot.MediaType {
   121  		case string(openrtb_ext.BidTypeBanner):
   122  			return openrtb_ext.BidTypeBanner, nil
   123  		case string(openrtb_ext.BidTypeVideo):
   124  			return openrtb_ext.BidTypeVideo, nil
   125  		case string(openrtb_ext.BidTypeNative):
   126  			return openrtb_ext.BidTypeNative, nil
   127  		}
   128  	}
   129  
   130  	return "", fmt.Errorf("unrecognized bid type in response from adot")
   131  }
   132  
   133  // resolveMacros resolves OpenRTB macros in nurl and adm
   134  func resolveMacros(bid *openrtb2.Bid) {
   135  	if bid == nil {
   136  		return
   137  	}
   138  	price := strconv.FormatFloat(bid.Price, 'f', -1, 64)
   139  	bid.NURL = strings.Replace(bid.NURL, "${AUCTION_PRICE}", price, -1)
   140  	bid.AdM = strings.Replace(bid.AdM, "${AUCTION_PRICE}", price, -1)
   141  }
   142  
   143  // getImpAdotExt parses and return first imp ext or nil
   144  func getImpAdotExt(imp *openrtb2.Imp) *openrtb_ext.ExtImpAdot {
   145  	var extImpAdot openrtb_ext.ExtImpAdot
   146  	var extBidder adapters.ExtImpBidder
   147  	err := json.Unmarshal(imp.Ext, &extBidder)
   148  	if err != nil {
   149  		return nil
   150  	}
   151  	err = json.Unmarshal(extBidder.Bidder, &extImpAdot)
   152  	if err != nil {
   153  		return nil
   154  	}
   155  	return &extImpAdot
   156  }