Serverless Framework not configuring properly Lambda subscription to SNS Topic - amazon-web-services

Question

I'm trying to implement this simple architecture with Serverless Framework :
File Upload to S3 Bucket --> SNS Topic --> 2 Lambda Functions
Actually i'm just testing with just 1 lambda function and here is my code:
service: MyImageLibrary
provider:
name: aws
runtime: python3.6
stage: dev
region: us-west-2
package:
individually: true
functions:
handler: index.lambda_handler
resources:
Resources:
ImageUploadedTopic:
Type: AWS::SNS::Topic
Properties:
TopicName: SNSTopicImageUploadedTopic
ImageUploadedTopicSubscription:
Type: AWS::SNS::Subscription
Properties:
Endpoint:
Fn::GetAtt: [ TestLambdaFunction , "Arn" ]
Protocol: lambda
TopicArn:
arn:aws:sns:us-west-2:xxxxxxxxxxx:SNSTopicImageUploadedTopic
ImageUploadedTopicPolicy:
Type: AWS::SNS::TopicPolicy
Properties:
PolicyDocument:
Version: '2012-10-17'
Statement:
- Sid: AllowBucketToPushNotificationEffect
Effect: Allow
Principal:
Service: s3.amazonaws.com
Action: sns:Publish
Resource: "*"
Topics:
- arn:aws:sns:us-west-2:xxxxxxxxxxx:SNSTopicImageUploadedTopic
MyImagesBucket:
Type: AWS::S3::Bucket
DependsOn: ImageUploadedTopicPolicy
Properties:
BucketName: ${self:custom.bucketName}
NotificationConfiguration:
TopicConfigurations:
- Event: s3:ObjectCreated:*
Topic:
arn:aws:sns:us-west-2:xxxxxxxxxxxx:SNSTopicImageUploadedTopic
CorsConfiguration:
CorsRules:
- AllowedMethods:
- GET
- PUT
- POST
- HEAD
AllowedOrigins:
- "*"
AllowedHeaders:
- "*"
In the console i can see that the Lambda function is subscribed to the the Topic :
But in the Lambda Function the SNS topic is not set in the Trigger section :
Am i missing something ?

Answer 1

Ok, i GOT IT !
I had to add another permission to allow the Lambda function to be triggered by the SNS Topic :
TestLambdaFunctionPermission:
Type: AWS::Lambda::Permission
Properties:
Action: lambda:InvokeFunction
Principal: sns.amazonaws.com
SourceArn:
Ref: ImageUploadedTopic
FunctionName:
Fn::GetAtt: [ TestLambdaFunction, "Arn" ]
And now in the console i can the SNS as trigger for my Lambda function :)