Added cognito MigrateUser event struct (#194)

* Added cognito MigrateUser event struct

* fix tabs broken by merge

* Update cognito_test.go

events/cognito.go

@@ -52,6 +52,14 @@ type CognitoEventUserPoolsPostAuthentication struct {
 	Response CognitoEventUserPoolsPostAuthenticationResponse `json:"response"`
 }
 
+// CognitoEventUserPoolsMigrateUser is sent by AWS Cognito User Pools when a user does not exist in the
+// user pool at the time of sign-in with a password, or in the forgot-password flow.
+type CognitoEventUserPoolsMigrateUser struct {
+	CognitoEventUserPoolsHeader
+	CognitoEventUserPoolsMigrateUserRequest  `json:"request"`
+	CognitoEventUserPoolsMigrateUserResponse `json:"response"`
+}
+
 // CognitoEventUserPoolsCallerContext contains information about the caller
 type CognitoEventUserPoolsCallerContext struct {
 	AWSSDKVersion string `json:"awsSdkVersion"`
@@ -111,6 +119,20 @@ type CognitoEventUserPoolsPostAuthenticationRequest struct {
 type CognitoEventUserPoolsPostAuthenticationResponse struct {
 }
 
+// CognitoEventUserPoolsMigrateUserRequest contains the request portion of a MigrateUser event
+type CognitoEventUserPoolsMigrateUserRequest struct {
+	Password string `json:"password"`
+}
+
+// CognitoEventUserPoolsMigrateUserResponse contains the response portion of a MigrateUser event
+type CognitoEventUserPoolsMigrateUserResponse struct {
+	UserAttributes         map[string]string `json:"userAttributes"`
+	FinalUserStatus        string            `json:"finalUserStatus"`
+	MessageAction          string            `json:"messageAction"`
+	DesiredDeliveryMediums []string          `json:"desiredDeliveryMediums"`
+	ForceAliasCreation     bool              `json:"forceAliasCreation"`
+}
+
 // ClaimsOverrideDetails allows lambda to add, supress or override claims in the token
 type ClaimsOverrideDetails struct {
 	GroupOverrideDetails  GroupConfiguration `json:"groupOverrideDetails"`

events/cognito_test.go

@@ -136,8 +136,32 @@ func TestCognitoEventUserPoolsPostAuthenticationMarshaling(t *testing.T) {
 	assert.JSONEq(t, string(inputJSON), string(outputJSON))
 }
 
-func TestCognitoEventUserPoolsCustomMessageMarshaling(t *testing.T) {
+func TestCognitoEventUserPoolsMigrateUserMarshalingMalformedJson(t *testing.T) {
+	test.TestMalformedJson(t, CognitoEventUserPoolsMigrateUser{})
+}
 
+func TestCognitoEventUserPoolsMigrateUserMarshaling(t *testing.T) {
+	// read json from file
+	inputJSON, err := ioutil.ReadFile("./testdata/cognito-event-userpools-migrateuser.json")
+	if err != nil {
+		t.Errorf("could not open test file. details: %v", err)
+	}
+
+	// de-serialize into CognitoEvent
+	var inputEvent CognitoEventUserPoolsMigrateUser
+	if err := json.Unmarshal(inputJSON, &inputEvent); err != nil {
+		t.Errorf("could not unmarshal event. details: %v", err)
+	}
+
+	// serialize to json
+	outputJSON, err := json.Marshal(inputEvent)
+	if err != nil {
+		t.Errorf("could not marshal event. details: %v", err)
+	}
+	test.AssertJsonsEqual(t, inputJSON, outputJSON)
+}
+
+func TestCognitoEventUserPoolsCustomMessageMarshaling(t *testing.T) {
 	// read json from file
 	inputJSON, err := ioutil.ReadFile("./testdata/cognito-event-userpools-custommessage.json")
 	if err != nil {

events/testdata/cognito-event-userpools-migrateuser.json

@@ -0,0 +1,27 @@
+{
+    "version": "1",
+    "triggerSource": "UserMigration_Authentication",
+    "region": "<region>",
+    "userPoolId": "<userPoolId>",
+    "userName": "<userName>",
+    "callerContext": {
+        "awsSdkVersion": "<calling aws sdk with version>",
+        "clientId": "<apps client id>"
+    },
+    "request": {
+        "password": "<password>"
+    },
+    "response": {
+        "userAttributes": {
+            "email": "<email>",
+            "phone_number": "<phone_number>"
+        },
+        "finalUserStatus": "<final_user_status>",
+        "messageAction": "<message-action>",
+        "desiredDeliveryMediums": [
+            "<desired-delivery-mediums-1>",
+            "<desired-delivery-mediums-2>"
+        ],
+        "forceAliasCreation": true
+    }
+}