动态创建API网关资源的子集合

问题描述

给出网址/customers/{customerId}/accounts或/customers/{customerId}/accounts/{accountId}

是否可以动态创建资源？

我不想重复代码。我打算使用某种地图或列表来管理此问题。甚至有可能吗？

样本（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"
}

类似这样的东西：

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>"
}

解决方法

资源名称不能是动态的。

常见的解决方案是一次定义资源，然后使用count变量基于列表（例如，列表）动态创建多个实例。 （未经测试的示例代码，使用与您提供的相同的HCL1语法）：

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...
}

您还可以将资源包装在module内，并将list_of_maps作为变量传递，以允许进一步重用此资源定义。