Add Yieldlab Adapter (#1287)

Co-authored-by: Mirko Feddern <mirkorean@users.noreply.github.com>
Signed-off-by: Alex Klinkert <alex@klinkert.io>

Co-authored-by: Alexander Pinnecke <alexander.pinnecke@googlemail.com>
Co-authored-by: Alex Klinkert <alex@klinkert.io>
Co-authored-by: Mirko Feddern <mirkorean@users.noreply.github.com>

adapters/adapterstest/test_json.go

@@ -208,7 +208,7 @@ func diffErrorLists(t *testing.T, description string, actual []error, expected [
 	t.Helper()
 
 	if len(expected) != len(actual) {
-		t.Fatalf("%s had wrong error count. Expected %d, got %d", description, len(expected), len(actual))
+		t.Fatalf("%s had wrong error count. Expected %d, got %d (%v)", description, len(expected), len(actual), actual)
 	}
 	for i := 0; i < len(actual); i++ {
 		if expected[i].Comparison == "literal" {

adapters/yieldlab/const.go

@@ -0,0 +1,7 @@
+package yieldlab
+
+const adSlotIdSeparator = ","
+const adsizeSeparator = "x"
+const adSourceBanner = "<script src=\"%v\"></script>"
+const adSourceURL = "https://ad.yieldlab.net/d/%v/%v/%v?%v"
+const creativeID = "%v%v%v"

adapters/yieldlab/params_test.go

@@ -0,0 +1,63 @@
+package yieldlab
+
+import (
+	"encoding/json"
+	"testing"
+
+	"github.com/prebid/prebid-server/openrtb_ext"
+)
+
+// This file actually intends to test static/bidder-params/yieldlab.json
+//
+// These also validate the format of the external API: request.imp[i].ext.yieldlab
+
+// TestValidParams makes sure that the yieldlab schema accepts all imp.ext fields which we intend to support.
+func TestValidParams(t *testing.T) {
+	validator, err := openrtb_ext.NewBidderParamsValidator("../../static/bidder-params")
+	if err != nil {
+		t.Fatalf("Failed to fetch the json-schemas. %v", err)
+	}
+
+	for _, validParam := range validParams {
+		if err := validator.Validate(openrtb_ext.BidderYieldlab, json.RawMessage(validParam)); err != nil {
+			t.Errorf("Schema rejected yieldlab params: %s", validParam)
+		}
+	}
+}
+
+// TestInvalidParams makes sure that the yieldlab schema rejects all the imp.ext fields we don't support.
+func TestInvalidParams(t *testing.T) {
+	validator, err := openrtb_ext.NewBidderParamsValidator("../../static/bidder-params")
+	if err != nil {
+		t.Fatalf("Failed to fetch the json-schemas. %v", err)
+	}
+
+	for _, invalidParam := range invalidParams {
+		if err := validator.Validate(openrtb_ext.BidderYieldlab, json.RawMessage(invalidParam)); err == nil {
+			t.Errorf("Schema allowed unexpected params: %s", invalidParam)
+		}
+	}
+}
+
+var validParams = []string{
+	`{"adslotId": "123","supplyId":"23456","adSize":"100x100"}`,
+	`{"adslotId": "123","supplyId":"23456","adSize":"100x100","extId":"asdf"}`,
+	`{"adslotId": "123","supplyId":"23456","adSize":"100x100","extId":"asdf","targeting":{"a":"b"}}`,
+	`{"adslotId": "123","supplyId":"23456","adSize":"100x100","targeting":{"a":"b"}}`,
+	`{"adslotId": "123","supplyId":"23456","adSize":"100x100","targeting":{"a":"b"}}`,
+}
+
+var invalidParams = []string{
+	`{"supplyId":"23456","adSize":"100x100"}`,
+	`{"adslotId": "123","adSize":"100x100","extId":"asdf"}`,
+	`{"adslotId": "123","supplyId":"23456","extId":"asdf","targeting":{"a":"b"}}`,
+	`{"adslotId": "123","supplyId":"23456"}`,
+	`{"adSize":"100x100","supplyId":"23456"}`,
+	`{"adslotId": "123","adSize":"100x100"}`,
+	`{"supplyId":"23456"}`,
+	`{"adslotId": "123"}`,
+	`{}`,
+	`[]`,
+	`{"a":"b"}`,
+	`null`,
+}

adapters/yieldlab/types.go

@@ -0,0 +1,29 @@
+package yieldlab
+
+import (
+	"strconv"
+	"time"
+)
+
+type bidResponse struct {
+	ID         uint64 `json:"id"`
+	Price      uint   `json:"price"`
+	Advertiser string `json:"advertiser"`
+	Adsize     string `json:"adsize"`
+	Pid        uint64 `json:"pid"`
+	Did        uint64 `json:"did"`
+	Pvid       string `json:"pvid"`
+}
+
+type cacheBuster func() string
+
+type weekGenerator func() string
+
+var defaultCacheBuster cacheBuster = func() string {
+	return strconv.FormatInt(time.Now().Unix(), 10)
+}
+
+var defaultWeekGenerator weekGenerator = func() string {
+	_, week := time.Now().ISOWeek()
+	return strconv.Itoa(week)
+}

adapters/yieldlab/usersync.go

@@ -0,0 +1,12 @@
+package yieldlab
+
+import (
+	"text/template"
+
+	"github.com/prebid/prebid-server/adapters"
+	"github.com/prebid/prebid-server/usersync"
+)
+
+func NewYieldlabSyncer(temp *template.Template) usersync.Usersyncer {
+	return adapters.NewSyncer("yieldlab", 70, temp, adapters.SyncTypeRedirect)
+}

adapters/yieldlab/usersync_test.go

@@ -0,0 +1,26 @@
+package yieldlab
+
+import (
+	"testing"
+	"text/template"
+
+	"github.com/stretchr/testify/assert"
+
+	"github.com/prebid/prebid-server/privacy"
+	"github.com/prebid/prebid-server/privacy/gdpr"
+)
+
+func TestYieldlabSyncer(t *testing.T) {
+	temp := template.Must(template.New("sync-template").Parse("https://ad.yieldlab.net/mr?t=2&pid=9140838&gdpr={{.GDPR}}&gdpr_consent={{.GDPRConsent}}&redirectUri=http%3A%2F%2Flocalhost%2F%2Fsetuid%3Fbidder%3Dyieldlab%26gdpr%3D{{.GDPR}}%26gdpr_consent%3D{{.GDPRConsent}}%26uid%3D%25%25YL_UID%25%25"))
+	syncer := NewYieldlabSyncer(temp)
+	syncInfo, err := syncer.GetUsersyncInfo(privacy.Policies{
+		GDPR: gdpr.Policy{
+			Signal: "0",
+		},
+	})
+	assert.NoError(t, err)
+	assert.Equal(t, "https://ad.yieldlab.net/mr?t=2&pid=9140838&gdpr=0&gdpr_consent=&redirectUri=http%3A%2F%2Flocalhost%2F%2Fsetuid%3Fbidder%3Dyieldlab%26gdpr%3D0%26gdpr_consent%3D%26uid%3D%25%25YL_UID%25%25", syncInfo.URL)
+	assert.Equal(t, "redirect", syncInfo.Type)
+	assert.EqualValues(t, 70, syncer.GDPRVendorID())
+	assert.False(t, syncInfo.SupportCORS)
+}