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apigw-lambda-dynamodb-terraform: Update runtime to python3.12 #2799

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apigw-lambda-dynamodb-terraform: Update runtime to python3.12 #2799

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apigw-lambda-dynamodb-terraform: Update runtime to python3.12
kakakakakku Jul 19, 2025
14a9159
apigw-lambda-dynamodb-terraform: Add .gitignore
kakakakakku Jul 19, 2025
ce423dc
apigw-lambda-dynamodb-terraform: Use aws_s3_bucket_public_access_bloc…
kakakakakku Jul 19, 2025
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1 change: 1 addition & 0 deletions apigw-lambda-dynamodb-terraform/.gitignore
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@@ -0,0 +1 @@
src.zip
14 changes: 9 additions & 5 deletions apigw-lambda-dynamodb-terraform/main.tf
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Expand Up @@ -2,7 +2,7 @@ terraform {
required_providers {
aws = {
source = "hashicorp/aws"
version = "~> 4.0.0"
version = "~> 5.0"
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note: Older version does not support Python 3.12 runtime. So I updated the version to v5.

}
random = {
source = "hashicorp/random"
Expand Down Expand Up @@ -56,9 +56,13 @@ resource "aws_s3_bucket" "lambda_bucket" {
force_destroy = true
}

resource "aws_s3_bucket_acl" "private_bucket" {
resource "aws_s3_bucket_public_access_block" "private_bucket" {
bucket = aws_s3_bucket.lambda_bucket.id
acl = "private"

block_public_acls = true
block_public_policy = true
ignore_public_acls = true
restrict_public_buckets = true
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note: The following error occurred when applying.

╷
│ Error: creating S3 Bucket (apigw-lambda-ddb20250719083122545300000001) ACL: operation error S3: PutBucketAcl, https response error StatusCode: 400, RequestID: RTCDVY9T5Y9NE0MW, HostID: vfd4QSf6vdz0D13xfdcM0lQDDIncDGdaEDF5Zsu1HhwOzmpYDt5r3C/0j1MKxlXp2QAnWBExjFw=, api error AccessControlListNotSupported: The bucket does not allow ACLs
│ 
│   with aws_s3_bucket_acl.private_bucket,
│   on main.tf line 58, in resource "aws_s3_bucket_acl" "private_bucket":
│   58: resource "aws_s3_bucket_acl" "private_bucket" {
│ 
╵

This issue is related to the changes described in the following blog post. To fix this, I enabled Block Public Access for the S3 bucket😀

Disabling ACLs is an S3 security best practice, and in April of 2023, we disabled ACLs by default for all new buckets.
https://aws.amazon.com/jp/blogs/storage/disabling-acls-for-existing-amazon-s3-workloads-with-information-in-s3-server-access-logs-and-aws-cloudtrail/

}

data "archive_file" "lambda_zip" {
Expand All @@ -85,7 +89,7 @@ resource "aws_lambda_function" "apigw_lambda_ddb" {
s3_bucket = aws_s3_bucket.lambda_bucket.id
s3_key = aws_s3_object.this.key

runtime = "python3.8"
runtime = "python3.12"
handler = "app.lambda_handler"

source_code_hash = data.archive_file.lambda_zip.output_base64sha256
Expand Down Expand Up @@ -222,4 +226,4 @@ resource "aws_lambda_permission" "api_gw" {
principal = "apigateway.amazonaws.com"

source_arn = "${aws_apigatewayv2_api.http_lambda.execution_arn}/*/*"
}
}