AWS::S3ObjectLambda Construct Library

---

cdk-constructs: Experimental

The APIs of higher level constructs in this module are experimental and under active development. They are subject to non-backward compatible changes or removal in any future version. These are not subject to the Semantic Versioning model and breaking changes will be announced in the release notes. This means that while you may use them, you may need to update your source code when upgrading to a newer version of this package.

This construct library allows you to define S3 object lambda access points.

import aws_cdk.aws_lambda as lambda_
import aws_cdk.aws_s3 as s3
import aws_cdk.aws_s3objectlambda_alpha as s3objectlambda
import aws_cdk as cdk

stack = cdk.Stack()
bucket = s3.Bucket(stack, "MyBucket")
handler = lambda_.Function(stack, "MyFunction",
    runtime=lambda_.Runtime.NODEJS_LATEST,
    handler="index.handler",
    code=lambda_.Code.from_asset("lambda.zip")
)
s3objectlambda.AccessPoint(stack, "MyObjectLambda",
    bucket=bucket,
    handler=handler,
    access_point_name="my-access-point",
    payload={
        "prop": "value"
    }
)

Handling range and part number requests

Lambdas are currently limited to only transforming GetObject requests. However, they can additionally support GetObject-Range and GetObject-PartNumber requests, which needs to be specified in the access point configuration:

import aws_cdk.aws_lambda as lambda_
import aws_cdk.aws_s3 as s3
import aws_cdk.aws_s3objectlambda_alpha as s3objectlambda
import aws_cdk as cdk

stack = cdk.Stack()
bucket = s3.Bucket(stack, "MyBucket")
handler = lambda_.Function(stack, "MyFunction",
    runtime=lambda_.Runtime.NODEJS_LATEST,
    handler="index.handler",
    code=lambda_.Code.from_asset("lambda.zip")
)
s3objectlambda.AccessPoint(stack, "MyObjectLambda",
    bucket=bucket,
    handler=handler,
    access_point_name="my-access-point",
    supports_get_object_range=True,
    supports_get_object_part_number=True
)

Pass additional data to Lambda function

You can specify an additional object that provides supplemental data to the Lambda function used to transform objects. The data is delivered as a JSON payload to the Lambda:

import aws_cdk.aws_lambda as lambda_
import aws_cdk.aws_s3 as s3
import aws_cdk.aws_s3objectlambda_alpha as s3objectlambda
import aws_cdk as cdk

stack = cdk.Stack()
bucket = s3.Bucket(stack, "MyBucket")
handler = lambda_.Function(stack, "MyFunction",
    runtime=lambda_.Runtime.NODEJS_LATEST,
    handler="index.handler",
    code=lambda_.Code.from_asset("lambda.zip")
)
s3objectlambda.AccessPoint(stack, "MyObjectLambda",
    bucket=bucket,
    handler=handler,
    access_point_name="my-access-point",
    payload={
        "prop": "value"
    }
)

Accessing the S3 AccessPoint ARN

If you need access to the s3 accesspoint, you can get its ARN like so:

import aws_cdk.aws_s3objectlambda_alpha as s3objectlambda

# access_point: s3objectlambda.AccessPoint
s3_access_point_arn = access_point.s3_access_point_arn

This is only supported for AccessPoints created in the stack - currently you're unable to get the S3 AccessPoint ARN for imported AccessPoints. To do that you'd have to know the S3 bucket name beforehand.

Release files for aws-cdk.aws-s3objectlambda-alpha 2.271.0a0

For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.

Source distribution (sdist)

Source distribution for aws-cdk.aws-s3objectlambda-alpha 2.271.0a0
File	Size	Uploaded
aws_cdk_aws_s3objectlambda_alpha-2.271.0a0.tar.gz	56.5 kB	Sep 25, 2026	Details

Built distribution (wheel)

Table of built distributions (wheels) for aws-cdk.aws-s3objectlambda-alpha 2.271.0a0
File	Interpreter	ABI	Platform	Reset
aws_cdk_aws_s3objectlambda_alpha-2.271.0a0-py3-none-any.whl 55.2 kB Sep 25, 2026	Python 3	none	any	Details

Total release size: 111.7 kB

Release files / aws_cdk_aws_s3objectlambda_alpha-2.271.0a0.tar.gz

Download URL	aws_cdk_aws_s3objectlambda_alpha-2.271.0a0.tar.gz
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Release files / aws_cdk_aws_s3objectlambda_alpha-2.271.0a0-py3-none-any.whl

Download URL	aws_cdk_aws_s3objectlambda_alpha-2.271.0a0-py3-none-any.whl
Size	55.2 kB
Tags	Python 3
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Uploaded via	`twine/7.0.0 CPython/3.11.15`