地形验证未短路OR(||)条件

Question

我有azurerm_app_service:的变量声明

variable "site_config_application_stack" {
type = object({
current_stack  = optional(string)
dotnet_version = optional(string)
node_version   = optional(string)
})
description = <<EOF
var.site_config_application_stack = {
current_stack = One of the following: dotnet, dotnetcore, node, python, php, and java.
dotnet_version = One of the following: v2.0,v3.0,core3.1, v4.0, v5.0, and v6.0.
node_version = One of the following: ~12, ~14, and ~16.
}  
EOF
validation {
condition     = var.site_config_application_stack.dotnet_version==null || contains(["v2.0", "v3.0", "core3.1", "v4.0", "v5.0", "v6.0"], var.site_config_application_stack.dotnet_version)
error_message = "The dotnet_version should be one of the following: v2.0,v3.0,core3.1, v4.0, v5.0, and v6.0."
}
validation {
condition     = var.site_config_application_stack.node_version==null || contains(["~12", "~14","~16"], var.site_config_application_stack.node_version)
error_message = "The `node_version` should be one of the following: ~12, ~14, and ~16."
}

validation {
condition     = var.site_config_application_stack.current_stack==null || contains(["dotnet", "dotnetcore", "node", "python", "php", "java"], var.site_config_application_stack.current_stack)
error_message = "The `current_stack` should be one of the following: dotnet, dotnetcore, node, python, php, and java."
}
}

当我尝试用代码创建资源时：

module "example_app"{
.....
site_config_application_stack = {
current_stack  = "dotnetcore"
dotnet_version = "v6.0"
}
.....
}

它给了我以下错误：

Error: Invalid function argument
│
│   on ....platform.terraform.modulesapp_servicevariables.tf line 108, in variable "site_config_application_stack":
│  108:     condition     = var.site_config_application_stack.node_version==null || contains(["~12", "~14","~16"], var.site_config_application_stack.node_version)
│     ├────────────────
│     │ var.site_config_application_stack.node_version is null
│
│ Invalid value for "value" parameter: argument must not be null.

var.site_config_application_stack.node_version==null是否应满足检查要求？

目前我已经删除了验证，但希望有一个变通方法！

Answer 1

它失败了，因为不能在contains中使用null值。你必须使用try:

condition     = var.site_config_application_stack.node_version==null || try(contains(["~12", "~14","~16"], var.site_config_application_stack.node_version), true)