課題
下記のようなコードで、Terraformのモジュールのディレクトリからfile()を使ってファイルを読もうとすると、
resource "aws_iam_policy" "send_mail" {
name = "${var.env}-lambda-send-mail"
path = "/"
description = "For IAM Role, ${var.env}-lambda-send-mail"
policy = file("templates/iam_policy_send_mail.json")
}
次のようなエラーが出る。
╷
│ Error: Invalid function argument
│
│ on ..\modules\personal-website-backend\main.tf line 10, in resource "aws_iam_policy" "send_mail":
│ 10: policy = file("templates/iam_policy_send_mail.json")
│ ├────────────────
│ │ while calling file(path)
│
│ Invalid value for "path" parameter: no file exists at "templates/iam_policy_send_mail.json"; this function works only with files that are distributed as part of the configuration source code, so if this file will be
│ created by a resource in this configuration you must instead obtain this result from an attribute of that resource.
解決
絶対パスを使って指定する。
${path.module}でモジュールのパスが取れるので、以下のように書けば解決。
resource "aws_iam_policy" "send_mail" {
name = "${var.env}-lambda-send-mail"
path = "/"
description = "For IAM Role, ${var.env}-lambda-send-mail"
policy = file("${path.module}/templates/iam_policy_send_mail.json")
}
