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

     1  package aso
     2  
     3  import (
     4  	"encoding/json"
     5  	"fmt"
     6  	"net/http"
     7  	"strconv"
     8  	"strings"
     9  	"text/template"
    10  
    11  	"github.com/prebid/openrtb/v20/openrtb2"
    12  	"github.com/prebid/prebid-server/v2/adapters"
    13  	"github.com/prebid/prebid-server/v2/config"
    14  	"github.com/prebid/prebid-server/v2/errortypes"
    15  	"github.com/prebid/prebid-server/v2/macros"
    16  	"github.com/prebid/prebid-server/v2/openrtb_ext"
    17  )
    18  
    19  type adapter struct {
    20  	endpoint *template.Template
    21  }
    22  
    23  func Builder(bidderName openrtb_ext.BidderName, config config.Adapter, server config.Server) (adapters.Bidder, error) {
    24  	endpointTemplate, err := template.New("endpointTemplate").Parse(config.Endpoint)
    25  	if err != nil {
    26  		return nil, fmt.Errorf("unable to parse endpoint template: %v", err)
    27  	}
    28  
    29  	bidder := &adapter{
    30  		endpoint: endpointTemplate,
    31  	}
    32  	return bidder, nil
    33  }
    34  
    35  func (a *adapter) MakeRequests(request *openrtb2.BidRequest, requestInfo *adapters.ExtraRequestInfo) ([]*adapters.RequestData, []error) {
    36  
    37  	var requests []*adapters.RequestData
    38  	var errors []error
    39  
    40  	requestCopy := *request
    41  
    42  	for _, imp := range request.Imp {
    43  		var bidderExt adapters.ExtImpBidder
    44  		if err := json.Unmarshal(imp.Ext, &bidderExt); err != nil {
    45  			errors = append(errors, &errortypes.BadInput{
    46  				Message: fmt.Sprintf("invalid imp.ext, %s", err.Error()),
    47  			})
    48  			continue
    49  		}
    50  
    51  		var impExt openrtb_ext.ExtImpAso
    52  		if err := json.Unmarshal(bidderExt.Bidder, &impExt); err != nil {
    53  			errors = append(errors, &errortypes.BadInput{
    54  				Message: fmt.Sprintf("invalid bidderExt.Bidder, %s", err.Error()),
    55  			})
    56  			continue
    57  		}
    58  
    59  		requestCopy.Imp = []openrtb2.Imp{imp}
    60  		endpoint, err := a.buildEndpointURL(&impExt)
    61  
    62  		if err != nil {
    63  			errors = append(errors, err)
    64  			continue
    65  		}
    66  
    67  		reqJSON, err := json.Marshal(requestCopy)
    68  		if err != nil {
    69  			errors = append(errors, err)
    70  			continue
    71  		}
    72  
    73  		headers := http.Header{}
    74  		headers.Add("Content-Type", "application/json;charset=utf-8")
    75  		headers.Add("Accept", "application/json")
    76  
    77  		requestData := &adapters.RequestData{
    78  			Method:  http.MethodPost,
    79  			Uri:     endpoint,
    80  			Body:    reqJSON,
    81  			Headers: headers,
    82  			ImpIDs:  openrtb_ext.GetImpIDs(requestCopy.Imp),
    83  		}
    84  		requests = append(requests, requestData)
    85  	}
    86  	return requests, errors
    87  }
    88  
    89  func (a *adapter) MakeBids(request *openrtb2.BidRequest, requestData *adapters.RequestData, responseData *adapters.ResponseData) (*adapters.BidderResponse, []error) {
    90  	if adapters.IsResponseStatusCodeNoContent(responseData) {
    91  		return nil, nil
    92  	}
    93  
    94  	if err := adapters.CheckResponseStatusCodeForErrors(responseData); err != nil {
    95  		return nil, []error{err}
    96  	}
    97  
    98  	var response openrtb2.BidResponse
    99  	if err := json.Unmarshal(responseData.Body, &response); err != nil {
   100  		return nil, []error{err}
   101  	}
   102  
   103  	bidResponse := adapters.NewBidderResponseWithBidsCapacity(len(request.Imp))
   104  	bidResponse.Currency = response.Cur
   105  
   106  	var errors []error
   107  	for _, seatBid := range response.SeatBid {
   108  		for i, bid := range seatBid.Bid {
   109  			resolveMacros(&seatBid.Bid[i])
   110  
   111  			bidType, err := getMediaType(bid)
   112  			if err != nil {
   113  				errors = append(errors, err)
   114  				continue
   115  			}
   116  
   117  			bidResponse.Bids = append(bidResponse.Bids, &adapters.TypedBid{
   118  				Bid:     &seatBid.Bid[i],
   119  				BidType: bidType,
   120  			})
   121  		}
   122  	}
   123  
   124  	return bidResponse, errors
   125  }
   126  
   127  func (a *adapter) buildEndpointURL(params *openrtb_ext.ExtImpAso) (string, error) {
   128  	endpointParams := macros.EndpointTemplateParams{ZoneID: strconv.Itoa(params.Zone)}
   129  	return macros.ResolveMacros(a.endpoint, endpointParams)
   130  }
   131  
   132  func getMediaType(bid openrtb2.Bid) (openrtb_ext.BidType, error) {
   133  	if bid.Ext != nil {
   134  		var bidExt openrtb_ext.ExtBid
   135  		err := json.Unmarshal(bid.Ext, &bidExt)
   136  		if err == nil && bidExt.Prebid != nil {
   137  			return openrtb_ext.ParseBidType(string(bidExt.Prebid.Type))
   138  		}
   139  	}
   140  
   141  	return "", &errortypes.BadServerResponse{
   142  		Message: fmt.Sprintf("Failed to get type of bid \"%s\"", bid.ImpID),
   143  	}
   144  }
   145  
   146  func resolveMacros(bid *openrtb2.Bid) {
   147  	if bid == nil {
   148  		return
   149  	}
   150  	price := strconv.FormatFloat(bid.Price, 'f', -1, 64)
   151  	bid.NURL = strings.Replace(bid.NURL, "${AUCTION_PRICE}", price, -1)
   152  	bid.AdM = strings.Replace(bid.AdM, "${AUCTION_PRICE}", price, -1)
   153  }