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

     1  package kayzen
     2  
     3  import (
     4  	"encoding/json"
     5  	"fmt"
     6  	"net/http"
     7  	"text/template"
     8  
     9  	"github.com/prebid/openrtb/v19/openrtb2"
    10  	"github.com/prebid/prebid-server/adapters"
    11  	"github.com/prebid/prebid-server/config"
    12  	"github.com/prebid/prebid-server/errortypes"
    13  	"github.com/prebid/prebid-server/macros"
    14  	"github.com/prebid/prebid-server/openrtb_ext"
    15  )
    16  
    17  type adapter struct {
    18  	endpoint *template.Template
    19  }
    20  
    21  // Builder builds a new instance of the Kayzen adapter for the given bidder with the given config.
    22  func Builder(bidderName openrtb_ext.BidderName, config config.Adapter, server config.Server) (adapters.Bidder, error) {
    23  	template, err := template.New("endpointTemplate").Parse(config.Endpoint)
    24  	if err != nil {
    25  		return nil, fmt.Errorf("unable to parse endpoint url template: %v", err)
    26  	}
    27  
    28  	bidder := &adapter{
    29  		endpoint: template,
    30  	}
    31  	return bidder, nil
    32  }
    33  
    34  func (a *adapter) MakeRequests(request *openrtb2.BidRequest, reqInfo *adapters.ExtraRequestInfo) (requests []*adapters.RequestData, errors []error) {
    35  	var kayzenExt *openrtb_ext.ExtKayzen
    36  	var err error
    37  
    38  	if len(request.Imp) > 0 {
    39  		kayzenExt, err = a.getImpressionExt(&(request.Imp[0]))
    40  		if err != nil {
    41  			errors = append(errors, err)
    42  		}
    43  		request.Imp[0].Ext = nil
    44  	} else {
    45  		errors = append(errors, &errortypes.BadInput{
    46  			Message: "Missing Imp Object",
    47  		})
    48  	}
    49  
    50  	if len(errors) > 0 {
    51  		return nil, errors
    52  	}
    53  
    54  	url, err := a.buildEndpointURL(kayzenExt)
    55  	if err != nil {
    56  		return nil, []error{err}
    57  	}
    58  
    59  	requestJSON, err := json.Marshal(request)
    60  	if err != nil {
    61  		return nil, []error{err}
    62  	}
    63  
    64  	headers := http.Header{}
    65  	headers.Add("Content-Type", "application/json;charset=utf-8")
    66  	headers.Add("Accept", "application/json")
    67  
    68  	return []*adapters.RequestData{{
    69  		Method:  http.MethodPost,
    70  		Body:    requestJSON,
    71  		Uri:     url,
    72  		Headers: headers,
    73  	}}, nil
    74  }
    75  
    76  func (a *adapter) getImpressionExt(imp *openrtb2.Imp) (*openrtb_ext.ExtKayzen, error) {
    77  	var bidderExt adapters.ExtImpBidder
    78  	if err := json.Unmarshal(imp.Ext, &bidderExt); err != nil {
    79  		return nil, &errortypes.BadInput{
    80  			Message: "Bidder extension not provided or can't be unmarshalled",
    81  		}
    82  	}
    83  	var kayzenExt openrtb_ext.ExtKayzen
    84  	if err := json.Unmarshal(bidderExt.Bidder, &kayzenExt); err != nil {
    85  		return nil, &errortypes.BadInput{
    86  			Message: "Error while unmarshaling bidder extension",
    87  		}
    88  	}
    89  	return &kayzenExt, nil
    90  }
    91  
    92  func (a *adapter) buildEndpointURL(params *openrtb_ext.ExtKayzen) (string, error) {
    93  	endpointParams := macros.EndpointTemplateParams{
    94  		ZoneID:    params.Zone,
    95  		AccountID: params.Exchange,
    96  	}
    97  	return macros.ResolveMacros(a.endpoint, endpointParams)
    98  }
    99  
   100  func (a *adapter) MakeBids(internalRequest *openrtb2.BidRequest, externalRequest *adapters.RequestData, response *adapters.ResponseData) (*adapters.BidderResponse, []error) {
   101  	if response.StatusCode == http.StatusNoContent {
   102  		return nil, nil
   103  	}
   104  
   105  	if response.StatusCode == http.StatusBadRequest {
   106  		err := &errortypes.BadInput{
   107  			Message: "Unexpected status code: 400. Bad request from publisher. Run with request.debug = 1 for more info.",
   108  		}
   109  		return nil, []error{err}
   110  	}
   111  
   112  	if response.StatusCode != http.StatusOK {
   113  		err := &errortypes.BadServerResponse{
   114  			Message: fmt.Sprintf("Unexpected status code: %d. Run with request.debug = 1 for more info.", response.StatusCode),
   115  		}
   116  		return nil, []error{err}
   117  	}
   118  
   119  	var bidResp openrtb2.BidResponse
   120  	if err := json.Unmarshal(response.Body, &bidResp); err != nil {
   121  		return nil, []error{&errortypes.BadServerResponse{
   122  			Message: "Bad Server Response",
   123  		}}
   124  	}
   125  
   126  	bidResponse := adapters.NewBidderResponseWithBidsCapacity(1)
   127  
   128  	var errs []error
   129  	for _, seatBid := range bidResp.SeatBid {
   130  		for _, bid := range seatBid.Bid {
   131  			b := &adapters.TypedBid{
   132  				Bid:     &bid,
   133  				BidType: getMediaTypeForImp(bid.ImpID, internalRequest.Imp),
   134  			}
   135  			bidResponse.Bids = append(bidResponse.Bids, b)
   136  		}
   137  	}
   138  	return bidResponse, errs
   139  }
   140  
   141  func getMediaTypeForImp(impID string, imps []openrtb2.Imp) openrtb_ext.BidType {
   142  	for _, imp := range imps {
   143  		if imp.ID == impID {
   144  			if imp.Banner != nil {
   145  				return openrtb_ext.BidTypeBanner
   146  			} else if imp.Video != nil {
   147  				return openrtb_ext.BidTypeVideo
   148  			} else if imp.Native != nil {
   149  				return openrtb_ext.BidTypeNative
   150  			}
   151  		}
   152  	}
   153  	return openrtb_ext.BidTypeBanner
   154  }