Menu
I am trying to publish to an SNS topic which will then notify a Lambda function, as well as an SQS queue. My Lambda function does get called, but the CloudWatch logs state that my "event" object is None. The boto3 docs states to use the kwarg MessageStructure='json' but that throws a ClientError.
Hopefully I've supplied enough information.
Example Code:
import json import boto3 message = {"foo": "bar"} client = boto3.client('sns') response = client.publish( TargetArn=arn, Message=json.dumps(message) ) 
291
On AWS Lambda function, switch to Configuration tab and Permissions section. You will see the Execution Role name. Click on the role name which will redirect developers to the IAM console where the appropriate policy can be attached to allow Lambda execution role to publish notifications to the SNS topic.
Yes, you could write a Lambda function that publishes to an SNS topic.
Amazon SNS and AWS Lambda are integrated so you can invoke Lambda functions with Amazon SNS notifications. When a message is published to an SNS topic that has a Lambda function subscribed to it, the Lambda function is invoked with the payload of the published message.
you need to add a default key to your message payload, and specify MessageStructure:
import json import boto3 message = {"foo": "bar"} client = boto3.client('sns') response = client.publish( TargetArn=arn, Message=json.dumps({'default': json.dumps(message)}), MessageStructure='json' ) If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
