☰

Terraform 嵌套映射 for_each

tag-icon • tag-icon terraform
Terraform 嵌套映射 for_each

我已经创建了这个 terraform 变量。

variable "test" {
  default = {
    map1 = {
      secrets = {
        "user" = "user"
        "pass" = "123456"
      }
      config = {
        "setting1"   = "123|456|789"
        "setting2"   = "123|456|789"
        "setting3"   = "123|456|789"
        "setting4"   = "123|456|789"
        "setting100" = "123|456|789"
      }
    }
    map2 = {
      secrets = {
        "user" = "user2"
        "pass" = "123456"
      }
      config = {
        "setting1"   = "100500|456|789"
        "setting2"   = "123|100500|789"
        "setting3"   = "123|456|100500"
        "setting4"   = "123|100500|789"
        "setting100" = "100500|456|789"
      }
    }
    mapN = {
      secrets = {
        "user" = "userN"
        "pass" = "123456"
      }
      config = {
        "setting1"   = "100500|456|789"
        "setting2"   = "123|100500|789"
        "setting3"   = "123|456|100500"
        "setting4"   = "123|100500|789"
        "settingN" = "100500|456|789"
      }
    }
  }
}

在这个变量中可能有大量的地图，例如，map1, map2, mapN 此外，还可能有许多具有不同名称的“设置”，例如setting1, setting2, dasdasd_23123, asdqw22_qq，但值总是有三个元素"123|456|789"。

我尝试将值传递给模块，例如：

module "test" {
  source = "./test"

  for_each = var.test

  map_name = each.key
  name1    = element(split("|", each.value.config), 0)
  name2    = element(split("|", each.value.config), 2)
  name3    = element(split("|", each.value.config), 1)
}

可以使用for_each吗for_each？有人有这样的经历吗？有人可以分享例子吗？谢谢！

答案1

variable "test" {
  default = {
    map1 = {
      secrets = {
        "user" = "user"
        "pass" = "123456"
      }
      config = {
        "setting1"   = "123|456|789"
        "setting2"   = "123|456|789"
        "setting3"   = "123|456|789"
        "setting4"   = "123|456|789"
        "setting100" = "123|456|789"
      }
    }
    map2 = {
      secrets = {
        "user" = "user2"
        "pass" = "123456"
      }
      config = {
        "setting1"   = "100500|456|789"
        "setting2"   = "123|100500|789"
        "setting3"   = "123|456|100500"
        "setting4"   = "123|100500|789"
        "setting100" = "100500|456|789"
      }
    }
    mapN = {
      secrets = {
        "user" = "userN"
        "pass" = "123456"
      }
      config = {
        "setting1"   = "100500|456|789"
        "setting2"   = "123|100500|789"
        "setting3"   = "123|456|100500"
        "setting4"   = "123|100500|789"
        "settingN" = "100500|456|789"
      }
    }
  }
}

variable "flattened_test" {
  default = [
    for map_name, map_data in var.test :
    {
      map_name = map_name
      secrets  = map_data.secrets
      config   = {
        for setting_name, setting_value in map_data.config :
        "${setting_name}_value" => setting_value
      }
    }
  ]
}

module "test" {
  source = "./test"

  for_each = { for item in var.flattened_test : item.map_name => item }

  map_name = each.key
  name1    = element(split("|", each.value.config.setting1_value), 0)
  name2    = element(split("|", each.value.config.setting1_value), 2)
  name3    = element(split("|", each.value.config.setting1_value), 1)
}

在 locals 块中，我们创建一个新的局部变量 top_level_map_names，其中包含所有顶级映射名称的列表（map1、map2、mapN）。

然后，在模块块中，我们使用嵌套的 for_each 循环：

外循环迭代顶级映射名称 (local.top_level_map_names)。内循环迭代每个顶级映射中的嵌套映射 (secrets 和 config)。

相关内容