使用 for_each 遍历具有多个值的对象映射

Question

我有多个使用 Terraform 创建的 DNS 记录。我的一条记录有两个需要读取的值。我在让 Terraform 能够遍历我的变量以使其成功读取时遇到问题。下面是我的代码。即使我有正确的数据类型，我也会收到一个没有任何意义的错误。我在循环这些资源的方式上存在一些错误，而且我在弄清楚哪里出错时遇到了一些麻烦。任何建议将不胜感激。

variables.tf

    variable "mx" {
      type = map(object({
        ttl     = string
        records = set(string)
      }))
    }

variables.tfvars

  mx = {
       "mx_record1" = {
         ttl = "3600"
         records = [
           "mx_record1_value"
         ]
       }
       "mx_record2" = {
         ttl = "3600"
         records = [
           "mx_record2_value"
           "mx_record2_value2"
         ]
       }

mx.tf

  locals {
       mx_records = flatten([
         for mx_key, mx in var.mx : [
           for record in mx.records : {
             record = record
             mx     = mx_key
           }
         ]
       ])
     }
 
 resource "aws_route53_record" "mx_records" {
   for_each = { for mx in local.mx_records : mx.record => mx }
   zone_id  = aws_route53_zone.zone.zone_id
   name     = each.key
   type     = "MX"
   ttl      = each.value.ttl
 
   records = [
     each.value.record
   ]
 }

遇到以下错误

    Error:
    
        Error: Unsupported attribute
    
      on mx.tf line 17, in resource "aws_route53_record" "mx_records":
      17:   ttl      = each.value.ttl
        |----------------
        | each.value is object with 2 attributes
    
    This object does not have an attribute named "ttl".

更新：

    locals {
  mx_records = flatten([
    for mx_key, mx in var.mx : [
      for record in mx.records : {
        record = record
        mx     = mx_key
        ttl    = mx.ttl
      }
    ]
  ])
}

resource "aws_route53_record" "mx_records" {
  for_each = { for mx in local.mx_records : mx.record => mx }
  zone_id  = aws_route53_zone.zone.zone_id
  name     = each.key
  type     = "MX"
  ttl      = each.value.ttl

  records = [
    each.value.record
  ]
}

错误

    Error: [ERR]: Error building changeset: InvalidChangeBatch: [FATAL problem: UnsupportedCharacter (Value contains unsupported characters) encountered with ' ']
        status code: 400, request id: a27e6a47-c10f-42ce-be94-10aaa9c276f8

  on mx.tf line 13, in resource "aws_route53_record" "mx_records":
  13: resource "aws_route53_record" "mx_records" {

Answer 1

我认为你的mx_records 应该是：

locals {
    mx_records = flatten([
      for mx_key, mx in var.mx :
        [for record in mx.records: {
          record = record
          mx     = mx_key
          ttl    = mx.ttl
        }]
      ])
}

这将产生以下结构：

mx_records = [
  {
    "mx" = "mx_record1"
    "record" = "mx_record1_value"
    "ttl" = "3600"
  },
  {
    "mx" = "mx_record2"
    "record" = "mx_record2_value"
    "ttl" = "3600"
  },
  {
    "mx" = "mx_record2"
    "record" = "mx_record2_value2"
    "ttl" = "3600"
  },
]