Terraform:云运行服务上的云终结点？

Question

有办法在云运行服务上运行云终结点吗？

假设我有下面的main.tf，在定义Cloud服务时，我希望使用Cloud的URL。据推测，该URL存储在google_cloud_run_service.cloud-run.status.url下。下面的配置会引发一个错误。

来自terraform plan的输出

Error: Unsupported attribute

  on main.tf line 411, in resource "google_endpoints_service" "cloud-run":
 411:   service_name = "${google_cloud_run_service.cloud-run.status.url}"

This value does not have any attributes.

main.tf：

[...]
#############
# Cloud Run #
#############
resource "google_cloud_run_service" "cloud-run" {
  name     = "cloud-run"
  provider = "google-beta"
  location = "europe-west1"
  metadata {
    namespace = "${var.gcp_project[var.env]}"
  }
  spec {
    containers {
      image = "gcr.io/endpoints-release/endpoints-runtime-serverless@sha256:a12b14dd6d31a88637ca7c9e63724ad542226d9509421ba08ed4452a91ce751e"
    }
    container_concurrency = var.env != "dev" ? 0 : 1
  }
}

###################
# Cloud Endpoints #
###################
resource "google_endpoints_service" "pre-pairing-api" {
  # The service name, AFAIK, should be Cloud Run's URL:
  service_name = "${google_cloud_run_service.cloud-run.status.url}" #  <--------
  openapi_config = <<EOF
swagger: '2.0'
info:
  title: Pre-pairing
  description: API on Cloud Endpoints with a Google Cloud Functions backend...
  version: 1.0.0
# Same applies to the host. It should be, AFAIK, Cloud Run's URL.
host: "${google_cloud_run_service.cloud-run.status.url}" # <--------
[...]

我是错过了什么还是误解了什么？提前感谢！

Answer 1

我找到了一个解决办法：

# main.tf
[...]
#############
# Cloud Run #
#############
resource "google_cloud_run_service" "cloud-run" {
  [...]
}


# The URL was located under `status[0].url` instead of `status.url`.
# I have created a local variable to store its value.
locals {
  cloud_run_url = google_cloud_run_service.cloud-run.status[0].url
}

###################
# Cloud Endpoints #
###################
resource "google_endpoints_service" "some-api" {
  service_name = "${replace(local.cloud_run_url, "https://", "")}" # <--------
  openapi_config = <<EOF
swagger: '2.0'
info:
  title: Some-API
  description: API on Cloud Endpoints with a Google Cloud Functions backend...
  version: 1.0.0
host: "${replace(local.cloud_run_url, "https://", "")}" # <--------
[...]
EOF

depends_on = ["google_cloud_run_service.cloud-run"]

不过，我还不能100%确定这是否适用于第一次运行。尽管如此，我还是希望depends_on (见上文)处理这个依赖关系，并在继续创建Cloud服务之前等待创建Cloud。

Answer 2

您可以按照这个文档设置云运行的云端点。

您的main.tf文件不会等待Cloud服务准备就绪，以便继续下一步将(ESP)容器部署到云运行。

示例使用这里展示了如何使用局部变量等待云运行服务准备就绪。