terraform-aws-lamba-python-archive

Package python source and dependencies into Lambda package with stable hash.

See: https://docs.aws.amazon.com/lambda/latest/dg/lambda-python-how-to-create-deployment-package.html

I created this module because using the standard technique of using an archive_file data source has a few shortcomings:

1. This doesn't allow processing a requirements file.
2. Each apply results in a diff in source_code_hash becuase the archive includes metadata and generated files (*.pyc). This module doesn't include file metadata or .pyc files in the archive so the hash is stable unless the source or dependencies change.

Example

module "python_lambda_archive" {
source = "rojopolis/lambda-python-archive/aws"
src_dir = "${path.module}/python"
output_path = "${path.module}/lambda.zip"
install_dependencies = false
}
resource "aws_iam_role" "iam_for_lambda" {
name = "iam_for_lambda"
assume_role_policy = <<EOF
{
"Version": "2012-10-17",
"Statement": [
{
"Action": "sts:AssumeRole",
"Principal": {
"Service": "lambda.amazonaws.com"
},
"Effect": "Allow",
"Sid": ""
}
]
}
EOF
}
resource "aws_lambda_function" "test_lambda" {
filename = "${module.python_lambda_archive.archive_path}"
function_name = "lambda_function_name"
role = "${aws_iam_role.iam_for_lambda.arn}"
handler = "exports.test"
source_code_hash = "${module.python_lambda_archive.source_code_hash}"
runtime = "python3.6"
environment {
variables = {
foo = "bar"
}
}
}

External Dependencies

1. Python3.4+