gistfile1.txt

resource "null_resource" "subnets" {
  triggers {
    subnets = "${var.private_subnets.us-west-2a},${var.private_subnets.us-west-2b},${var.private_subnets.us-west-2c}"
  }
}
resource "aws_elasticache_subnet_group" "elasticache" {
  name = "${var.name}-${var.envtag}"
  description = "${var.name} subnet group for ${var.envtag}"
  subnet_ids = [ "${compact("${split(",","${null_resource.subnets.triggers.subnets}")}")}" ]
}