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

     1  package cpmstar
     2  
     3  import (
     4  	"encoding/json"
     5  	"fmt"
     6  	"net/http"
     7  
     8  	"github.com/prebid/openrtb/v19/openrtb2"
     9  	"github.com/prebid/prebid-server/adapters"
    10  	"github.com/prebid/prebid-server/config"
    11  	"github.com/prebid/prebid-server/errortypes"
    12  	"github.com/prebid/prebid-server/openrtb_ext"
    13  )
    14  
    15  type Adapter struct {
    16  	endpoint string
    17  }
    18  
    19  func (a *Adapter) MakeRequests(request *openrtb2.BidRequest, unused *adapters.ExtraRequestInfo) ([]*adapters.RequestData, []error) {
    20  	var errs []error
    21  	var adapterRequests []*adapters.RequestData
    22  
    23  	if err := preprocess(request); err != nil {
    24  		errs = append(errs, err)
    25  		return nil, errs
    26  	}
    27  
    28  	adapterReq, err := a.makeRequest(request)
    29  	if err != nil {
    30  		errs = append(errs, err)
    31  		return nil, errs
    32  	}
    33  
    34  	adapterRequests = append(adapterRequests, adapterReq)
    35  
    36  	return adapterRequests, errs
    37  }
    38  
    39  func (a *Adapter) makeRequest(request *openrtb2.BidRequest) (*adapters.RequestData, error) {
    40  	var err error
    41  
    42  	jsonBody, err := json.Marshal(request)
    43  	if err != nil {
    44  		return nil, err
    45  	}
    46  
    47  	headers := http.Header{}
    48  	headers.Add("Content-Type", "application/json;charset=utf-8")
    49  
    50  	return &adapters.RequestData{
    51  		Method:  "POST",
    52  		Uri:     a.endpoint,
    53  		Body:    jsonBody,
    54  		Headers: headers,
    55  	}, nil
    56  }
    57  
    58  func preprocess(request *openrtb2.BidRequest) error {
    59  	if len(request.Imp) == 0 {
    60  		return &errortypes.BadInput{
    61  			Message: "No Imps in Bid Request",
    62  		}
    63  	}
    64  	for i := 0; i < len(request.Imp); i++ {
    65  		var imp = &request.Imp[i]
    66  		var bidderExt adapters.ExtImpBidder
    67  
    68  		if err := json.Unmarshal(imp.Ext, &bidderExt); err != nil {
    69  			return &errortypes.BadInput{
    70  				Message: err.Error(),
    71  			}
    72  		}
    73  
    74  		if err := validateImp(imp); err != nil {
    75  			return err
    76  		}
    77  
    78  		var extImp openrtb_ext.ExtImpCpmstar
    79  		if err := json.Unmarshal(bidderExt.Bidder, &extImp); err != nil {
    80  			return &errortypes.BadInput{
    81  				Message: err.Error(),
    82  			}
    83  		}
    84  
    85  		imp.Ext = bidderExt.Bidder
    86  	}
    87  
    88  	return nil
    89  }
    90  
    91  func validateImp(imp *openrtb2.Imp) error {
    92  	if imp.Banner == nil && imp.Video == nil {
    93  		return &errortypes.BadInput{
    94  			Message: "Only Banner and Video bid-types are supported at this time",
    95  		}
    96  	}
    97  	return nil
    98  }
    99  
   100  // MakeBids based on cpmstar server response
   101  func (a *Adapter) MakeBids(bidRequest *openrtb2.BidRequest, unused *adapters.RequestData, responseData *adapters.ResponseData) (*adapters.BidderResponse, []error) {
   102  	if responseData.StatusCode == http.StatusNoContent {
   103  		return nil, nil
   104  	}
   105  
   106  	if responseData.StatusCode != http.StatusOK {
   107  		return nil, []error{&errortypes.BadServerResponse{
   108  			Message: fmt.Sprintf("Unexpected HTTP status code: %d. Run with request.debug = 1 for more info", responseData.StatusCode),
   109  		}}
   110  	}
   111  
   112  	var bidResponse openrtb2.BidResponse
   113  
   114  	if err := json.Unmarshal(responseData.Body, &bidResponse); err != nil {
   115  		return nil, []error{&errortypes.BadServerResponse{
   116  			Message: err.Error(),
   117  		}}
   118  	}
   119  
   120  	if len(bidResponse.SeatBid) == 0 {
   121  		return nil, nil
   122  	}
   123  
   124  	rv := adapters.NewBidderResponseWithBidsCapacity(len(bidResponse.SeatBid[0].Bid))
   125  	var errors []error
   126  
   127  	for _, seatbid := range bidResponse.SeatBid {
   128  		for _, bid := range seatbid.Bid {
   129  			foundMatchingBid := false
   130  			bidType := openrtb_ext.BidTypeBanner
   131  			for _, imp := range bidRequest.Imp {
   132  				if imp.ID == bid.ImpID {
   133  					foundMatchingBid = true
   134  					if imp.Banner != nil {
   135  						bidType = openrtb_ext.BidTypeBanner
   136  					} else if imp.Video != nil {
   137  						bidType = openrtb_ext.BidTypeVideo
   138  					}
   139  					break
   140  				}
   141  			}
   142  
   143  			if foundMatchingBid {
   144  				rv.Bids = append(rv.Bids, &adapters.TypedBid{
   145  					Bid:     &bid,
   146  					BidType: bidType,
   147  				})
   148  			} else {
   149  				errors = append(errors, &errortypes.BadServerResponse{
   150  					Message: fmt.Sprintf("bid id='%s' could not find valid impid='%s'", bid.ID, bid.ImpID),
   151  				})
   152  			}
   153  		}
   154  	}
   155  	return rv, errors
   156  }
   157  
   158  // Builder builds a new instance of the Cpmstar adapter for the given bidder with the given config.
   159  func Builder(bidderName openrtb_ext.BidderName, config config.Adapter, server config.Server) (adapters.Bidder, error) {
   160  	bidder := &Adapter{
   161  		endpoint: config.Endpoint,
   162  	}
   163  	return bidder, nil
   164  }