iam_role.tf

#############################################
# IAM Role
#############################################

resource "aws_iam_role" "lambda_edge_role" {
  name               = "cloudfront-lambda-edge-role"
  description        = "For Lambda Edge to put log events at CloudWatch log group"
  tags               = var.resource_tags
  assume_role_policy = <<EOF
{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Sid": "",
      "Effect": "Allow",
      "Principal": {
        "Service": [
          "lambda.amazonaws.com",
          "edgelambda.amazonaws.com"
        ]
      },
      "Action": "sts:AssumeRole"
    }
  ]
}
EOF
}

resource "aws_iam_role_policy_attachment" "lambda_edge_role_policy_attachment" {
  role       = aws_iam_role.lambda_edge_role.name
  policy_arn = "arn:aws:iam::aws:policy/service-role/AWSLambdaBasicExecutionRole"
}