Question

我尝试使用null_resource使用triggers枚举地图变量，并在另一个资源中使用此枚举的结果。

这有效：

resource "null_resource" "dummy" {
  count = "${length(var.file_map)}"

  triggers {
    filename = "${element(keys(var.file_map), count.index)}"
    content = "${var.file_map[element(keys(var.file_map), count.index)]}"
  }
}

variable "file_map" {
  type = "map"

  default = {
    "foo.txt" = "foo"
    "bar.txt" = "bar"
  }
}

输出：

An execution plan has been generated and is shown below.
Resource actions are indicated with the following symbols:
  + create

Terraform will perform the following actions:

  + null_resource.dummy[0]
      id:                <computed>
      triggers.%:        "2"
      triggers.content:  "bar"
      triggers.filename: "bar.txt"

  + null_resource.dummy[1]
      id:                <computed>
      triggers.%:        "2"
      triggers.content:  "foo"
      triggers.filename: "foo.txt"


Plan: 2 to add, 0 to change, 0 to destroy.

但是当我尝试在另一个资源中使用枚举结果时，它失败了：

resource "local_file" "some_files" {
  content = "${null_resource.dummy.triggers.content}"
  filename = "${null_resource.dummy.triggers.filename}"
}

resource "null_resource" "dummy" {
  count = "${length(var.file_map)}"

  triggers {
    filename = "${element(keys(var.file_map), count.index)}"
    content = "${var.file_map[element(keys(var.file_map), count.index)]}"
  }
}

variable "file_map" {
  type = "map"

  default = {
    "foo.txt" = "foo"
    "bar.txt" = "bar"
  }
}

输出：

Error running plan: 1 error(s) occurred:

* local_file.some_files: 1 error(s) occurred:

* local_file.some_files: Resource 'null_resource.dummy' not found for variable
                         'null_resource.dummy.triggers.content'

有没有办法让它发挥作用？

Answer 1

资源YouTube('video_url').streams.first().download('save_path')中element的类似用法，您需要在null_resource中执行相同操作。

local_file

运行resource "local_file" "some_files" { count = "${length(var.file_map)}" content = "${element(null_resource.dummy.*.triggers.content, count.index)}" filename = "${element(null_resource.dummy.*.triggers.filename, count.index)}" } resource "null_resource" "dummy" { count = "${length(var.file_map)}" triggers { filename = "${element(keys(var.file_map), count.index)}" content = "${var.file_map[element(keys(var.file_map), count.index)]}" } } variable "file_map" { type = "map" default = { "foo.txt" = "foo" "bar.txt" = "bar" } }后，会生成两个文件

terraform apply

如果您想了解更多信息，$ cat bar.txt bar $ cat foo.txt foo将为您提供有关其工作原理的详细信息。

使用null_resource和触发器枚举map变量

1 个答案: