[Mgid] Add new Mgid Adapter (prebid#907)

* new mgid adapter

* increase coverage

* remove extra imports

adapters/mgid/README.md

@@ -0,0 +1 @@
+Please contact <[email protected]> if you would like to build and deploy Prebid server and use it with Mgid.

adapters/mgid/mgid.go

@@ -0,0 +1,169 @@
+package mgid
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"github.com/mxmCherry/openrtb"
+	"github.com/prebid/prebid-server/adapters"
+	"github.com/prebid/prebid-server/errortypes"
+	"github.com/prebid/prebid-server/openrtb_ext"
+	"net/http"
+)
+
+type MgidAdapter struct {
+	endpoint string
+}
+
+type ReqExt struct {
+	PlacementId string `json:"placementId"`
+	AccountId   string `json:"accountId"`
+}
+
+type RespBidExt struct {
+	CreativeType openrtb_ext.BidType `json:"crtype"`
+}
+
+func (a *MgidAdapter) MakeRequests(request *openrtb.BidRequest) (adapterRequests []*adapters.RequestData, errs []error) {
+
+	adapterReq, errs := a.makeRequest(request)
+	if adapterReq != nil && len(errs) == 0 {
+		adapterRequests = append(adapterRequests, adapterReq)
+	}
+
+	return
+}
+
+func (a *MgidAdapter) makeRequest(request *openrtb.BidRequest) (*adapters.RequestData, []error) {
+	var errs []error
+
+	path, err := preprocess(request)
+	if err != nil {
+		errs = append(errs, err)
+		return nil, errs
+	}
+
+	// Last Step
+	reqJSON, err := json.Marshal(request)
+	if err != nil {
+		errs = append(errs, err)
+		return nil, errs
+	}
+
+	headers := http.Header{}
+	headers.Add("Content-Type", "application/json;charset=utf-8")
+	headers.Add("Accept", "application/json")
+
+	return &adapters.RequestData{
+		Method:  "POST",
+		Uri:     a.endpoint + path,
+		Body:    reqJSON,
+		Headers: headers,
+	}, errs
+}
+
+// Mutate the request to get it ready to send to yieldmo.
+func preprocess(request *openrtb.BidRequest) (path string, err error) {
+	if request.TMax == 0 {
+		request.TMax = 200
+	}
+	for i := 0; i < len(request.Imp); i++ {
+		var imp = request.Imp[i]
+		var bidderExt adapters.ExtImpBidder
+
+		if err := json.Unmarshal(imp.Ext, &bidderExt); err != nil {
+			return "", &errortypes.BadInput{
+				Message: err.Error(),
+			}
+		}
+
+		var mgidExt openrtb_ext.ExtImpMgid
+
+		if err := json.Unmarshal(bidderExt.Bidder, &mgidExt); err != nil {
+			return "", &errortypes.BadInput{
+				Message: err.Error(),
+			}
+		}
+
+		if path == "" {
+			path = mgidExt.AccountId
+		}
+		request.Imp[i].TagID = mgidExt.PlacementId
+
+		cur := ""
+		if mgidExt.Currency != "" && mgidExt.Currency != "USD" {
+			cur = mgidExt.Currency
+		}
+		if cur == "" && mgidExt.Cur != "" && mgidExt.Cur != "USD" {
+			cur = mgidExt.Cur
+		}
+		bidfloor := mgidExt.BidFloor
+		if bidfloor <= 0 {
+			bidfloor = mgidExt.BidFloor2
+		}
+		if bidfloor > 0 {
+			request.Imp[i].BidFloor = bidfloor
+		}
+		if cur != "" {
+			request.Imp[i].BidFloorCur = cur
+		}
+	}
+	if path == "" {
+		return "", &errortypes.BadInput{
+			Message: "accountId is not set",
+		}
+	}
+
+	return
+}
+
+func (a *MgidAdapter) MakeBids(bidReq *openrtb.BidRequest, unused *adapters.RequestData, response *adapters.ResponseData) (*adapters.BidderResponse, []error) {
+	if response.StatusCode == http.StatusNoContent {
+		return nil, nil
+	}
+
+	if response.StatusCode == http.StatusBadRequest {
+		return nil, []error{&errortypes.BadInput{
+			Message: fmt.Sprintf("Unexpected status code: %d. Run with request.debug = 1 for more info", response.StatusCode),
+		}}
+	}
+
+	if response.StatusCode != http.StatusOK {
+		return nil, []error{&errortypes.BadServerResponse{
+			Message: fmt.Sprintf("Unexpected status code: %d. Run with request.debug = 1 for more info", response.StatusCode),
+		}}
+	}
+
+	var bidResp openrtb.BidResponse
+
+	if err := json.Unmarshal(response.Body, &bidResp); err != nil {
+		return nil, []error{err}
+	}
+
+	bidResponse := adapters.NewBidderResponseWithBidsCapacity(1)
+
+	bidResponse.Currency = bidResp.Cur
+
+	for _, sb := range bidResp.SeatBid {
+		for i := range sb.Bid {
+			bidType := openrtb_ext.BidTypeBanner
+			if len(sb.Bid[i].Ext) > 0 && bytes.Contains(sb.Bid[i].Ext, []byte("crtype")) {
+				ext := RespBidExt{}
+				if err := json.Unmarshal(sb.Bid[i].Ext, &ext); err == nil && len(ext.CreativeType) > 0 {
+					bidType = ext.CreativeType
+				}
+			}
+			bidResponse.Bids = append(bidResponse.Bids, &adapters.TypedBid{
+				Bid:     &sb.Bid[i],
+				BidType: bidType,
+			})
+		}
+	}
+	return bidResponse, nil
+}
+
+func NewMgidBidder(endpoint string) *MgidAdapter {
+	return &MgidAdapter{
+		endpoint: endpoint,
+	}
+}

adapters/mgid/mgid_test.go

@@ -0,0 +1,10 @@
+package mgid
+
+import (
+	"github.com/prebid/prebid-server/adapters/adapterstest"
+	"testing"
+)
+
+func TestJsonSamples(t *testing.T) {
+	adapterstest.RunJSONBidderTest(t, "mgidtest", NewMgidBidder("https://prebid.mgid.com/prebid/"))
+}

adapters/mgid/mgidtest/exemplary/simple-banner.json

@@ -0,0 +1,135 @@
+{
+  "mockBidRequest": {
+    "id": "test-request-id",
+    "imp": [
+      {
+        "id": "test-imp-id",
+        "banner": {
+          "format": [
+            {
+              "w": 300,
+              "h": 250
+            },
+            {
+              "w": 300,
+              "h": 600
+            }
+          ]
+        },
+        "ext": {
+          "bidder": {
+            "accountId": "123",
+            "placementId": "456"
+          }
+        }
+      }
+    ],
+    "device": {
+      "ua": "test-user-agent",
+      "ip": "123.123.123.123",
+      "language": "en",
+      "dnt": 0
+    },
+    "site": {
+      "domain": "www.publisher.com",
+      "page": "http://www.publisher.com/awesome/site"
+    },
+    "user": {
+      "buyeruid": "test_reader_id"
+    }
+  },
+
+  "httpCalls": [
+    {
+      "expectedRequest": {
+        "headers": {
+          "Accept": ["application/json"],
+          "Content-Type": ["application/json;charset=utf-8"]
+        },
+        "uri": "https://prebid.mgid.com/prebid/123",
+        "body": {
+          "id": "test-request-id",
+          "imp": [
+            {
+              "id": "test-imp-id",
+              "banner": {
+                "format": [
+                  {
+                    "w": 300,
+                    "h": 250
+                  },
+                  {
+                    "w": 300,
+                    "h": 600
+                  }
+                ]
+              },
+              "tagid": "456",
+              "ext": {
+                "bidder": {
+                  "accountId": "123",
+                  "placementId": "456"
+                }
+              }
+            }
+          ],
+          "site": {
+            "domain": "www.publisher.com",
+            "page": "http://www.publisher.com/awesome/site"
+          },
+          "tmax": 200,
+          "user": {
+            "buyeruid": "test_reader_id"
+          },
+          "device": {
+            "ua": "test-user-agent",
+            "ip": "123.123.123.123",
+            "dnt": 0,
+            "language": "en"
+          }
+        }
+      },
+      "mockResponse": {
+        "status": 200,
+        "body": {
+          "id": "test-request-id",
+          "seatbid": [
+            {
+              "bid": [
+                {
+                  "id": "test-bid-id",
+                  "impid": "test-imp-id",
+                  "price": 3.5,
+                  "nurl": "nurl",
+                  "adm": "some-test-ad",
+                  "w": 300,
+                  "h": 250
+                }
+              ]
+            }
+          ]
+        }
+      }
+    }
+  ],
+
+  "expectedBidResponses": [
+    {
+      "currency": "USD",
+      "bids": [
+        {
+          "bid": {
+            "id": "test-bid-id",
+            "impid": "test-imp-id",
+            "price": 3.5,
+            "adm": "some-test-ad",
+            "nurl": "nurl",
+            "w": 300,
+            "h": 250
+          },
+          "type": "banner"
+        }
+      ]
+    }
+  ]
+}