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@ThomasEg
Description
Describe the bug
Having an event handler for user migration in Cognito:
[assembly: LambdaSerializer(typeof(Amazon.Lambda.Serialization.SystemTextJson.DefaultLambdaJsonSerializer))]
...
public void CognitoMigrateUserHandler(CognitoMigrateUserEvent cognitoEvent, ILambdaContext context)
{
...
}
Throws an exception during serialization of CognitoMigrateUserEvent:
Amazon.Lambda.Serialization.SystemTextJson.JsonSerializerException:
Error converting the Lambda event JSON payload to type Amazon.Lambda.CognitoEvents.CognitoMigrateUserEvent:
The JSON value could not be converted to System.Boolean.
Path: $.response.forceAliasCreation | LineNumber: 0 | BytePositionInLine: 401.
The data sent from cognito was:
{
"version": "1",
"triggerSource": "UserMigration_Authentication",
"region": "...",
"userPoolId": "...",
"userName": "...",
"callerContext": {
"awsSdkVersion": "...",
"clientId": "..."
},
"request": {
"password": "...",
"validationData": null,
"userAttributes": null
},
"response": {
"userAttributes": null,
"forceAliasCreation": null,
"enableSMSMFA": null,
"finalUserStatus": null,
"messageAction": null,
"desiredDeliveryMediums": null
}
}
Regression Issue
- Select this option if this issue appears to be a regression.
Expected Behavior
I expect it to serialize correctly and then call the method.
Current Behavior
It throws a deserialization exception.
Reproduction Steps
Setup a Cognito UserPool to have a Migrate user trigger with this target:
[assembly: LambdaSerializer(typeof(Amazon.Lambda.Serialization.SystemTextJson.DefaultLambdaJsonSerializer))]
...
public void CognitoMigrateUserHandler(CognitoMigrateUserEvent cognitoEvent, ILambdaContext context)
{
}
Possible Solution
My guess is that the types of the properties in the response-object needs to be nullable.
Additional Information/Context
No response
AWS .NET SDK and/or Package version used
Amazon.Lambda.CognitoEvents: 4.0.0
Amazon.Lambda.Serialization.SystemTextJson:2.4.4
Targeted .NET Platform
.NET 8
Operating System and version
Windows 11