[英]Terraform: How to check if s3 access point exists before creating it?
我有一個資源可以根據提供的輸入創建多個 s3 接入點。 輸入是一個 map,其中 s3 uri 作為鍵,解析后的存儲桶名稱作為值。
例子:
{
"s3://my_bucket/model1.tar.gz" -> "my_bucket",
"s3://my_bucket_2/model2.tar.gz" -> "my_bucket_2",
"s3://my_bucket/model3.tar.gz" -> "my_bucket"
}
然后我使用for_each
遍歷 map 中的每個元素以創建 s3 接入點。 不幸的是,map 中有 2 個“my_bucket”值,這意味着它將嘗試為該指定存儲桶創建 s3 訪問點兩次,因此會出錯並顯示以下消息:
AccessPointAlreadyOwnedByYou: Your previous request to create the named accesspoint succeeded and you already own it.
在創建資源之前如何檢查訪問點是否存在?
代碼示例:
resource "aws_s3_access_point" "s3_access_point" {
for_each = var.create ? local.uri_bucket_map : {}
bucket = each.value
name = format("%s-%s", each.value, "access-point")
}
output "s3_access_point_arn" {
description = "The arn of the access point"
value = { for uri, ap in aws_s3_access_point.s3_access_point : uri => ap.arn }
}
所需的 Output:
{
"s3://my_bucket/model1.tar.gz" -> <access point uri>,
"s3://my_bucket_2/model2.tar.gz" -> <access point uri>,
"s3://my_bucket/model3.tar.gz" -> <access point uri>
}
我會反轉你的uri_bucket_map
:
locals {
uri_bucket_map_inverse = {
for k,v in local.uri_bucket_map: v => k...
}
}
給予:
{
"my_bucket" = [
"s3://my_bucket/model1.tar.gz",
"s3://my_bucket/model3.tar.gz",
]
"my_bucket_2" = [
"s3://my_bucket_2/model2.tar.gz",
]
}
然后只需將訪問點創建為:
resource "aws_s3_access_point" "s3_access_point" {
for_each = var.create ? local.uri_bucket_map_inverse : {}
bucket = each.key
name = format("%s-%s", each.key, "access-point")
}
output 將同時使用 AP 和倒排列表 map:
output "s3_access_point_arn" {
description = "The arn of the access point"
value = merge([for bucket_name, ap in aws_s3_access_point.s3_access_point:
{ for uri in local.uri_bucket_map_inverse[bucket_name]:
uri => ap.arn
}
]...)
}
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