Push message to SNS with MessageAttributes

To successfully push a message to Amazon SNS with MessageAttributes, you need to ensure that the MessageAttributes parameter is correctly structured as a dictionary. Each attribute must be a dictionary containing StringValue and DataType.

import boto3

# Create an SNS client
sns_client = boto3.client('sns')

# Define the message
message = 'This is a test message'

# Define the MessageAttributes
message_attributes = {
    'S3_Bucket': {
        'StringValue': 'test-s3',
        'DataType': 'String'
    }
}

# Publish the message to the SNS topic
response = sns_client.publish(
    TopicArn='arn:aws:sns:region:account-id:topic-name',
    Message=message,
    MessageAttributes=message_attributes
)

print(response)

I tried as below and its working now, Thank you very much Thanniru Anil Kumar !

s3_bucket_name='test-s3' message_attributes = { 'S3_Bucket': { 'StringValue': s3_bucket_name, 'DataType': 'String' } }