Which solution will meet these requirements?
Create an AWS Lambda function to transform the data and to write a new object to the existing S3 bucket. Configure the Lambda function with an S3 trigger for the existing S3 bucket. Specify all object create events for the event type. Acknowledge the recursive invocation.
Enable Amazon EventBridge notifications on the existing S3 bucket. Create a custom EventBridge event bus. Create an EventBridge rule that is associated with the custom event bus. Configure the rule to react to all object create events for the existing S3 bucket and to invoke an AWS Step Functions workflow. Configure a Step Functions task to transform the data and to write the data into a new S3 bucket.
Create an Amazon EventBridge rule that is associated with the default EventBridge event bus. Configure the rule to react to all object create events for the existing S3 bucket. Define a new S3 bucket as the target for the rule. Create an EventBridge input transformation to customize the event before passing the event to the rule target.
Create an Amazon Kinesis Data Firehose delivery stream that is configured with an AWS Lambda transformer. Specify the existing S3 bucket as the destination. Change the Network Firewall logging destination from Amazon S3 to Kinesis Data Firehose.
Explanations:
Using an S3 trigger with Lambda would cause a recursive invocation problem. This could lead to infinite loops, as the Lambda function would be triggered every time a new object is created in the S3 bucket, including the newly transformed objects.
While EventBridge can be used to trigger workflows, this option introduces unnecessary complexity. Using AWS Step Functions to transform data before writing it to S3 is over-engineered compared to simpler methods, especially considering that Lambda can handle the transformation directly.
EventBridge rules are generally not suitable for transforming data in the way this scenario requires. While they can route events, they don’t provide the necessary data transformation capabilities before writing to a new S3 bucket.
This option uses Amazon Kinesis Data Firehose, which is designed for real-time data delivery and transformation. The Lambda transformer in Firehose can transform the flow logs before they are delivered to the S3 bucket. This solution is the most efficient and purpose-built for the task.
I plan that the answer is:
Create an Amazon Kinesis Data Firehose delivery stream that is configured with an AWS Lambda transformer. Specify the existing S3 bucket as the destination. Change the Network Firewall logging destination from Amazon S3 to Kinesis Data Firehose.