前提

Windows上で、terraformを使用

概要

Lambda構築の、引っ掛かりポイント

詳細

Code

Lambdaの部分のみ記載

module "lambda" {
    source  = "terraform-aws-modules/lambda/aws"
    version = "7.2.1"
    function_name = "function"
    description   = "lambda for example"
    handler       = "function.lambda_handler"
    runtime       = "python3.13"
    attach_policy_json = true
    policy_json        = data.aws_iam_policy_document.policy.json
    source_path        = ["${path.module}/codes/function.py"]
    timeout            = 300
    trigger_on_package_timestamp = false
    create_lambda_function_url   = true
    tags = {
        Environment = var.env
    }
    environment_variables = {
        Token: module.secretsmanager.secret
    }
    layers        = ["${aws_lambda_layer_version.lambda_layer.arn}"]
}

引っ掛かりポイント

terraform plan時にこんなエラーが出る


│ UnicodeDecodeError: 'cp932' codec can't decode byte 0xef in position 1540: illegal multibyte sequence

文字エンコーディングがデフォルトの cp932 なことが原因のエラー
文字エンコーディングを UTF-8 にするとエラーが解消される。

解消パターン

C:\Users\****\terraform\dev>set PYTHONUTF8=1
C:\Users\****\terraform\dev>terraform plan
## 途中結果は略
Note: You didn't use the -out option to save this plan, so Terraform can't guarantee to take exactly these actions if
you run "terraform apply" now.

C:\Users\****\terraform\dev>terraform apply
## 途中結果は略
Apply complete! Resources: * added, * changed, * destroyed.

plan, apply両方うまくいくようになる