aws-appsync: EventApi forces you to include IAM Authorization mode #33465
Description
Describe the bug
When creating a new EventAPI from AppSync console, this is the default authorizationConfig you get:
This should be equivalent to the following code snippet:
const demoApi = new EventApi(this, "DemoApi", {
apiName: "demo-api"
});Which is also equivalent to this more verbose code snippet:
const demoApi = new EventApi(this, "DemoApi", {
apiName: "demo-api",
authorizationConfig: {
authProviders: [
{
authorizationType: AppSyncAuthorizationType.API_KEY,
},
],
connectionAuthModeTypes: [AppSyncAuthorizationType.API_KEY],
defaultPublishAuthModeTypes: [AppSyncAuthorizationType.API_KEY],
defaultSubscribeAuthModeTypes: [AppSyncAuthorizationType.API_KEY],
},
});Regression Issue
- Select this option if this issue appears to be a regression.
Last Known Working CDK Version
No response
Expected Behavior
I expected the following code to work:
const demoApi = new EventApi(this, "DemoApi", {
apiName: "demo-api"
});Current Behavior
I got the following error:
ValidationError: IAM Authorization mode is not configured on this API.
at path [cdk-aws-appsync-events-demo-dev/EventsApi] in aws-cdk-lib.aws_appsync.EventApiReproduction Steps
Create the following resource:
const demoApi = new EventApi(this, "DemoApi", {
apiName: "demo-api"
});Possible Solution
The current workaround is to enable IAM authorization mode, even if it is not needed or used.
const demoApi = new EventApi(this, "DemoApi", {
apiName: "demo-api",
authorizationConfig: {
authProviders: [
{
authorizationType: AppSyncAuthorizationType.API_KEY,
},
{
authorizationType: AppSyncAuthorizationType.IAM,
},
],
connectionAuthModeTypes: [AppSyncAuthorizationType.API_KEY],
defaultPublishAuthModeTypes: [AppSyncAuthorizationType.API_KEY],
defaultSubscribeAuthModeTypes: [AppSyncAuthorizationType.API_KEY],
},
});Additional Information/Context
No response
CDK CLI Version
2.178.2
Framework Version
No response
Node.js Version
22.13.0
OS
24.04.1
Language
TypeScript
Language Version
No response
Other information
No response