为api网关资源动态创建子集合

Question

给定网址/customers/{customerId}/accounts 或/customers/{customerId}/accounts/{accountId}

是否可以动态创建资源？

我不想有重复的代码。我打算使用某种地图或列表来管理它。有没有可能？

示例（硬代码）：

resource "aws_api_gateway_resource" "customers" {
  rest_api_id = "${aws_api_gateway_rest_api.my-api.id}"
  parent_id = "${aws_api_gateway_rest_api.my-api.root_resource_id}"
  path_part = "customers"
}

resource "aws_api_gateway_resource" "single-customer" {
  rest_api_id = "${aws_api_gateway_rest_api.my-api.id}"
  parent_id = "${aws_api_gateway_resource.customers.id}"
  path_part = "{customerId}"
}

resource "aws_api_gateway_resource" "customers-accounts" {
  rest_api_id = "${aws_api_gateway_rest_api.my-api.id}"
  parent_id = "${aws_api_gateway_resource.single-customer.id}"
  path_part = "accounts"
}

//----
// GET
//----
resource "aws_api_gateway_method" "get-customers-accounts" {
  rest_api_id = "${aws_api_gateway_rest_api.my-api.id}"
  resource_id = "${aws_api_gateway_resource.customers-accounts.id}"
  http_method = "GET"
  authorization = "NONE"
}

类似这样的：

resource "aws_api_gateway_resource" "var.resource.name" {
  rest_api_id = "${aws_api_gateway_rest_api.my-api.id}"
  parent_id = "${aws_api_gateway_rest_api.<previous resource id or root id if is root>}"
  path_part = "<current value>"
}

Answer 1

资源名称不能是动态的。

一种常见的解决方案是定义一次资源并使用count 变量基于列表动态创建多个实例，例如（未经测试，示例代码与您提供的 HCL1 语法相同）：

locals {
    list_of_maps = [{
        "api_id" = "some_id",
        etc...
    },{
        "api_id" = "some_id",
        etc...
    }]
}

resource "aws_api_gateway_resource" "gateway" {
    // will create a resource for every element inside list_of_maps 
    count = "${count(local.list_of_maps)}"

    // every iteration will take the corresponding map and pull variables from it using "lookup" 
    rest_api_id = "${lookup(element(local.list_of_maps, count.index), "api_id")}"

    etc...
}

您还可以将上面的资源包装在 module 中，并将 list_of_maps 作为变量传递，从而允许进一步重用此资源定义。