AWS SNS:

aws sns publish --topic-arn "sns-arn" --subject "CLI Notification" --message "Hello from the AWS CLI!"

import boto3

# Initialize the SNS client
sns_client = boto3.client("sns", region_name="eu-central-1")

# Topic ARN (Amazon Resource Name)
topic_arn = "sns-arn"

# Publish a simple message
response = sns_client.publish(
    TopicArn=topic_arn, Message="Hello from Python!", Subject="Python Notification"
)

# Check if the message was sent successfully
if "MessageId" in response:
    print(f"Message published successfully! Message ID: {response['MessageId']}")

import boto3

# Initialize the SNS client
sns_client = boto3.client("sns", region_name="eu-central-1")

# Topic ARN (Amazon Resource Name)
topic_arn = "arn:aws:sns:eu-central-1:105036517833:TestTopic"

response = sns_client.publish(
    TopicArn=topic_arn,
    Message="A new high-value order has been placed",
    Subject="New Order Notification",
    MessageAttributes={
        "order_value": {"DataType": "Number", "StringValue": "2000"},
        "region": {"DataType": "String", "StringValue": "EU"},
        "category": {"DataType": "String", "StringValue": "Electronics"},
    },
)

print(response)

def lambda_handler(event, context):
    # SNS messages come in the 'Records' array
    for record in event["Records"]:
        # Extract the message
        message = record["Sns"]["Message"]
        subject = record["Sns"]["Subject"]
        timestamp = record["Sns"]["Timestamp"]

        # Process the message
        print(f"Received message: {message}")
        print(f"Subject: {subject}")
        print(f"Timestamp: {timestamp}")

        # Your business logic here
        # For example, store the message in a database
        # or trigger another AWS service
        print("ALL DONE!")

    # Return success
    return {"statusCode": 200, "body": "Message processed successfully"}

• NumberOfNotificationsDelivered:
• NumberOfNotificationsFailed:

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Effect": "Allow",
            "Action": "sns:Publish",
            "Resource": "sns-arn"
        }
    ]
}

# Subscribe with a filter policy
response = sns.subscribe(
    TopicArn="sns-arn",
    Protocol="email",
    Endpoint="oncall@example.com",
    Attributes={"FilterPolicy": '{"severity": ["critical"]}'},
)