Added cognito PostAuthentication event struct

events/cognito.go

@@ -44,6 +44,14 @@ type CognitoEventUserPoolsPreTokenGen struct {
 	Response CognitoEventUserPoolsPreTokenGenResponse `json:"response"`
 }
 
+// CognitoEventUserPoolsPostAuthentication is sent by AWS Cognito User Pools after a user is authenticated,
+// allowing the Lambda to add custom logic.
+type CognitoEventUserPoolsPostAuthentication struct {
+	CognitoEventUserPoolsHeader
+	Request  CognitoEventUserPoolsPostAuthenticationRequest  `json:"request"`
+	Response CognitoEventUserPoolsPostAuthenticationResponse `json:"response"`
+}
+
 // CognitoEventUserPoolsCallerContext contains information about the caller
 type CognitoEventUserPoolsCallerContext struct {
 	AWSSDKVersion string `json:"awsSdkVersion"`
@@ -93,6 +101,16 @@ type CognitoEventUserPoolsPreTokenGenResponse struct {
 	ClaimsOverrideDetails ClaimsOverrideDetails `json:"claimsOverrideDetails"`
 }
 
+// CognitoEventUserPoolsPostAuthenticationRequest contains the request portion of a PostAuthentication event
+type CognitoEventUserPoolsPostAuthenticationRequest struct {
+	NewDeviceUsed  bool              `json:"newDeviceUsed"`
+	UserAttributes map[string]string `json:"userAttributes"`
+}
+
+// CognitoEventUserPoolsPostAuthenticationResponse contains the response portion of a PostAuthentication event
+type CognitoEventUserPoolsPostAuthenticationResponse struct {
+}
+
 // ClaimsOverrideDetails allows lambda to add, supress or override claims in the token
 type ClaimsOverrideDetails struct {
 	GroupOverrideDetails  GroupConfiguration `json:"groupOverrideDetails"`

events/cognito_test.go

@@ -112,3 +112,26 @@ func TestCognitoEventUserPoolsPreTokenGenMarshaling(t *testing.T) {
 
 	test.AssertJsonsEqual(t, inputJSON, outputJSON)
 }
+
+func TestCognitoEventUserPoolsPostAuthenticationMarshaling(t *testing.T) {
+
+	// read json from file
+	inputJSON, err := ioutil.ReadFile("./testdata/cognito-event-userpools-postauthentication.json")
+	if err != nil {
+		t.Errorf("could not open test file. details: %v", err)
+	}
+
+	// de-serialize into CognitoEvent
+	var inputEvent CognitoEventUserPoolsPostAuthentication
+	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)
+	}
+
+	assert.JSONEq(t, string(inputJSON), string(outputJSON))
+}

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

@@ -0,0 +1,19 @@
+{
+  "version": "1",
+  "triggerSource": "PostAuthentication_Authentication",
+  "region": "<region>",
+  "userPoolId": "<userPoolId>",
+  "userName": "<userName>",
+  "callerContext": {
+      "awsSdkVersion": "<calling aws sdk with version>",
+      "clientId": "<apps client id>"
+  },
+  "request": {
+      "newDeviceUsed": true,
+      "userAttributes" : {
+          "email": "<email>",
+          "phone_number": "<phone_number>"
+      }
+  },
+  "response": {}
+}