在 Terraform 模块定义中合并地图

Question

我在 Terraform 中将 Azure Function App 作为模块公开，我希望该模块允许用户扩展配置参数：

resource "azurerm_function_app" "test" {
  name                      = "${var.prefix}-listener"
  resource_group_name       = "${var.resource_group_name}"
  location                  = "${var.resource_group_location}"
  app_service_plan_id       = "${var.app_service_plan_id}"
  storage_connection_string = "${var.storage_account_connection_string}"

  app_settings = {
    HASH = "${data.archive_file.test.output_base64sha256}"
    WEBSITE_USE_ZIP = "https://${var.storage_account_name}.blob.core.windows.net/${azurerm_storage_container.test.name}/${azurerm_storage_blob.test.name}${data.azurerm_storage_account_sas.test.sas}"
  }

  site_config {
    always_on = true
  }
}

但是，在该示例中 app_settings 是固定的，我希望可以扩展此地图。类似于：

  app_settings = ${merge({
    HASH = "${data.archive_file.test.output_base64sha256}"
    WEBSITE_USE_ZIP = "https://${var.storage_account_name}.blob.core.windows.net/${azurerm_storage_container.test.name}/${azurerm_storage_blob.test.name}${data.azurerm_storage_account_sas.test.sas}"
  }, ${var.app_settings})}

我从阅读 merge function 得到了这个想法。但是我收到 无效表达式 错误。

此处正确的语法是什么？

Answer 1

看起来 { 和 } 导致字符串插值出现问题。您可以将代码更改为，

app_settings = "${merge(
    map("HASH","${data.archive_file.test.output_base64sha256}"),
    map("WEBSITE_USE_ZIP","https://${var.storage_account_name}.blob.core.windows.net/${azurerm_storage_container.test.name}/${azurerm_storage_blob.test.name}${data.azurerm_storage_account_sas.test.sas}"), 
    var.app_settings}"

希望这能解决您的问题。

Answer 2

map 已弃用

│ Call to function "map" failed: the "map" function was deprecated in
│ Terraform v0.12 and is no longer available; use tomap({ ... }) syntax to
│ write a literal map.

现在您可以使用

app_settings = merge(
    tomap({ "HASH" = "${data.archive_file.test.output_base64sha256}", "WEBSITE_USE_ZIP" = "https://${var.storage_account_name}.blob.core.windows.net/${azurerm_storage_container.test.name}/${azurerm_storage_blob.test.name}${data.azurerm_storage_account_sas.test.sas}"}), 
    var.app_settings)

您也可以通过以下方式实现：


locals {
 app_settings = {
   HASH = "${data.archive_file.test.output_base64sha256}"
   WEBSITE_USE_ZIP = "https://${var.storage_account_name}.blob.core.windows.net/${azurerm_storage_container.test.name}/${azurerm_storage_blob.test.name}${data.azurerm_storage_account_sas.test.sas}"
 }
}

然后

app_settings = merge(local.app_settings, var.app_settings)

在 Terraform 模块定义中合并地图

Merging map in Terraform module definition

terraform

terraform-provider-azure