terraform - 过滤 terraform 列表中的特定值

Question

我有一个生成 gcp 区域列表的 terraform 代码块

data "google_compute_regions" "available" {
  project = var.project
}

output "name" {
  value = data.google_compute_regions.available.names
}

  ~ name = [
      + "asia-east1",
      + "asia-east2",
      + "asia-northeast1",
      + "asia-northeast2",
      + "asia-northeast3",
      + "asia-south1",
      + "asia-southeast1",
      + "asia-southeast2",
      + "australia-southeast1",
      + "europe-north1",
      + "europe-west1",
      + "europe-west2",
      + "europe-west3",
      + "europe-west4",
      + "europe-west6",
      + "northamerica-northeast1",
      + "southamerica-east1",
      + "us-central1",
      + "us-east1",
      + "us-east4",
      + "us-west1",
      + "us-west2",
      + "us-west3",
      + "us-west4",
    ]

但是，我只想过滤掉欧洲地区。

这样做

output "names" {
  value = [for s in data.google_compute_regions.available.names : s if s == "europe-west1"]
}

只给我一个区域，这不是我想要的。

+ names = [
    + "europe-west1",
  ]

我不确定是否支持通配符或如何为其编写逻辑。

我试过按照 here 所述使用文件管理器但我似乎没有做对。

data "google_compute_regions" "available" {
  project = var.project

  filter {
    name   = "name"
    values = ["europe-*"]
  }
}

但是我遇到了错误此处不应使用“filter”类型的 block 。

Answer 1

由于某些原因，该数据源似乎不支持过滤器，因此您需要在输出中执行正则表达式，如下所示:

output "names" {
  value = [for s in data.google_compute_regions.available.names : s if length(regexall("europe.*", s)) > 0]
}