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bidders.go
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bidders.go
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package info
import (
"net/http"
"sort"
"strings"
"github.com/golang/glog"
"github.com/julienschmidt/httprouter"
"github.com/prebid/prebid-server/v2/config"
"github.com/prebid/prebid-server/v2/util/jsonutil"
)
var invalidEnabledOnlyMsg = []byte(`Invalid value for 'enabledonly' query param, must be of boolean type`)
var invalidBaseAdaptersOnlyMsg = []byte(`Invalid value for 'baseadaptersonly' query param, must be of boolean type`)
// NewBiddersEndpoint builds a handler for the /info/bidders endpoint.
func NewBiddersEndpoint(bidders config.BidderInfos, aliases map[string]string) httprouter.Handle {
responseAll, err := prepareBiddersResponseAll(bidders, aliases)
if err != nil {
glog.Fatalf("error creating /info/bidders endpoint all bidders response: %v", err)
}
responseAllBaseOnly, err := prepareBiddersResponseAllBaseOnly(bidders)
if err != nil {
glog.Fatalf("error creating /info/bidders endpoint all bidders (base adapters only) response: %v", err)
}
responseEnabledOnly, err := prepareBiddersResponseEnabledOnly(bidders, aliases)
if err != nil {
glog.Fatalf("error creating /info/bidders endpoint enabled only response: %v", err)
}
responseEnabledOnlyBaseOnly, err := prepareBiddersResponseEnabledOnlyBaseOnly(bidders)
if err != nil {
glog.Fatalf("error creating /info/bidders endpoint enabled only (base adapters only) response: %v", err)
}
return func(w http.ResponseWriter, r *http.Request, _ httprouter.Params) {
enabledOnly, baseAdaptersOnly, errMsg := readQueryFlags(r)
if errMsg != nil {
writeBadRequest(w, errMsg)
return
}
var response []byte
switch {
case !enabledOnly && !baseAdaptersOnly:
response = responseAll
case !enabledOnly && baseAdaptersOnly:
response = responseAllBaseOnly
case enabledOnly && !baseAdaptersOnly:
response = responseEnabledOnly
case enabledOnly && baseAdaptersOnly:
response = responseEnabledOnlyBaseOnly
}
writeResponse(w, response)
}
}
func readQueryFlags(r *http.Request) (enabledOnly, baseAdaptersOnly bool, errMsg []byte) {
enabledOnly, ok := readQueryFlag(r, "enabledonly")
if !ok {
return false, false, invalidEnabledOnlyMsg
}
baseAdapterOnly, ok := readQueryFlag(r, "baseadaptersonly")
if !ok {
return false, false, invalidBaseAdaptersOnlyMsg
}
return enabledOnly, baseAdapterOnly, nil
}
func readQueryFlag(r *http.Request, queryParam string) (flag, ok bool) {
q := r.URL.Query()
v, exists := q[queryParam]
if !exists || len(v) == 0 {
return false, true
}
switch strings.ToLower(v[0]) {
case "true":
return true, true
case "false":
return false, true
default:
return false, false
}
}
func prepareBiddersResponseAll(bidders config.BidderInfos, aliases map[string]string) ([]byte, error) {
bidderNames := make([]string, 0, len(bidders)+len(aliases))
for name := range bidders {
bidderNames = append(bidderNames, name)
}
for name := range aliases {
bidderNames = append(bidderNames, name)
}
sort.Strings(bidderNames)
return jsonutil.Marshal(bidderNames)
}
func prepareBiddersResponseAllBaseOnly(bidders config.BidderInfos) ([]byte, error) {
bidderNames := make([]string, 0, len(bidders))
for name, info := range bidders {
if len(info.AliasOf) == 0 {
bidderNames = append(bidderNames, name)
}
}
sort.Strings(bidderNames)
return jsonutil.Marshal(bidderNames)
}
func prepareBiddersResponseEnabledOnly(bidders config.BidderInfos, aliases map[string]string) ([]byte, error) {
bidderNames := make([]string, 0, len(bidders)+len(aliases))
for name, info := range bidders {
if info.IsEnabled() {
bidderNames = append(bidderNames, name)
}
}
for name, bidder := range aliases {
if info, ok := bidders[bidder]; ok && info.IsEnabled() {
bidderNames = append(bidderNames, name)
}
}
sort.Strings(bidderNames)
return jsonutil.Marshal(bidderNames)
}
func prepareBiddersResponseEnabledOnlyBaseOnly(bidders config.BidderInfos) ([]byte, error) {
bidderNames := make([]string, 0, len(bidders))
for name, info := range bidders {
if info.IsEnabled() && len(info.AliasOf) == 0 {
bidderNames = append(bidderNames, name)
}
}
sort.Strings(bidderNames)
return jsonutil.Marshal(bidderNames)
}
func writeBadRequest(w http.ResponseWriter, data []byte) {
w.WriteHeader(http.StatusBadRequest)
writeWithErrorHandling(w, data)
}
func writeResponse(w http.ResponseWriter, data []byte) {
w.Header().Set("Content-Type", "application/json")
writeWithErrorHandling(w, data)
}
func writeWithErrorHandling(w http.ResponseWriter, data []byte) {
if _, err := w.Write(data); err != nil {
glog.Errorf("error writing response to /info/bidders: %v", err)
}
}