iam-k8s.tf

resource "aws_iam_role" "waggle_dance_k8s_role_iam" {
  count = var.wd_instance_type == "k8s" && var.oidc_provider != "" ? 1 : 0

  name = "${local.instance_alias}-k8s-${var.aws_region}"
  tags = var.tags

  description = "Role to allow AWS Glue access from WaggleDance"

  assume_role_policy = <<EOF
{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Effect": "Allow",
      "Principal": {
        "Federated": "arn:aws:iam::${data.aws_caller_identity.current.account_id}:oidc-provider/${var.oidc_provider}"
      },
      "Action": "sts:AssumeRoleWithWebIdentity",
      "Condition": {
       "StringEquals": {
         "${var.oidc_provider}:sub": "system:serviceaccount:${var.k8s_namespace}:${local.instance_alias}",
         "${var.oidc_provider}:aud": "sts.amazonaws.com"
       }
      }
    }
  ]
}
EOF
}

resource "aws_iam_role_policy" "waggle_dance_glue_k8s_policy" {
  count = var.wd_instance_type == "k8s" && var.oidc_provider != "" && length(var.glue_metastores) > 0 ? 1 : 0 
  role  = aws_iam_role.waggle_dance_k8s_role_iam[0].name
  name  = "waggle-dance-glue-readonly"

  policy = data.aws_iam_policy_document.waggle_dance_glue_policy[0].json
}