Aws publish sns message for lambda function via boto3 python2

When working with AWS services, it is common to need to publish SNS messages for Lambda functions using the Boto3 library in Python. In this article, we will explore three different ways to achieve this task.

Option 1: Using the publish() method


import boto3

def publish_sns_message(topic_arn, message):
    sns = boto3.client('sns')
    sns.publish(TopicArn=topic_arn, Message=message)

# Usage example
topic_arn = 'arn:aws:sns:us-west-2:123456789012:my-topic'
message = 'Hello, world!'
publish_sns_message(topic_arn, message)

In this option, we use the publish() method provided by the Boto3 SNS client. We create an instance of the client using boto3.client('sns') and then call the publish() method, passing the topic ARN and the message as parameters.

Option 2: Using the publish_message() method


import boto3

def publish_sns_message(topic_arn, message):
    sns = boto3.resource('sns')
    topic = sns.Topic(topic_arn)
    topic.publish(Message=message)

# Usage example
topic_arn = 'arn:aws:sns:us-west-2:123456789012:my-topic'
message = 'Hello, world!'
publish_sns_message(topic_arn, message)

In this option, we use the publish() method provided by the Boto3 SNS resource. We create an instance of the resource using boto3.resource('sns') and then create a topic object using the topic ARN. Finally, we call the publish() method on the topic object, passing the message as a parameter.

Option 3: Using the publish() method with a custom client


import boto3

def publish_sns_message(topic_arn, message):
    session = boto3.Session(region_name='us-west-2')
    sns = session.client('sns')
    sns.publish(TopicArn=topic_arn, Message=message)

# Usage example
topic_arn = 'arn:aws:sns:us-west-2:123456789012:my-topic'
message = 'Hello, world!'
publish_sns_message(topic_arn, message)

In this option, we create a custom session using boto3.Session() and specify the desired region. Then, we create a client using session.client('sns') and call the publish() method, passing the topic ARN and the message as parameters.

After analyzing the three options, the best approach depends on the specific requirements of your project. Option 1 is the simplest and most straightforward, but it may not provide all the flexibility you need. Option 2 allows for more advanced features, such as message attributes, but it requires creating a topic object. Option 3 provides the most control over the session and client configuration, but it adds complexity.

Consider your project’s needs and choose the option that best fits your requirements.

Rate this post

13 Responses

    1. Nah, Im sticking with Option 1. It may require a little more effort, but the end results will be worth it. Whos ready to step up their game and embrace the challenge? Lets go!

    1. It really depends on your specific requirements and preferences. Option 1 may be simpler to implement, but Option 3 offers greater flexibility for customization. Consider your needs and choose accordingly. #boto3 #AWS

  1. Option 2 looks way cooler than the others! I mean, who doesnt love a good publish_message() method? #LambdaLife

    1. I completely disagree! Option 2 is clearly the superior choice. Option 1 is just a waste of time. Its obvious to me that Option 2 is the way to go. No question about it.

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