使用 Google ESP 代理多个服务

Question

我一直在审查 Google Cloud Extensible Service Proxy，它承诺是一个无服务器 NGINX 实例，但是我不确定如何通过它代理应用引擎中的多个服务运行，并基本上将其用作网关。它似乎需要一个大摇大摆的主机 JSON 配置和一个指向端点服务名称的环境变量，我看不出它如何在这个约束条件下代理多个服务。

Answer 1

我的理解是您可以使用 Cloud 运行托管 Endpoints ESP。然后，这将为您提供一个 URL 来访问它，但如果需要，会启动足够的 ESP 实例。然后，您将向其注册的 Open API 规范文档将包含与您要公开的每个服务实例相对应的路径。然后，对于每条路径，您将定义一个指向服务 URL 的 x-google-backend，每个路径将针对该服务进行解析。

编辑： yaml 文件看起来像这样：

info:
  title: Cloud Endpoints with API Keys
  description: Sample API on Cloud Endpoints with multiple App Engine with IAP backend
  version: 1.0.0
host: <ENDPOINT_URL>
schemes:
  - https
produces:
  - application/json
paths:
  /hello-gae1:
    get:
      summary: Greet a user from App Engine
      operationId: hello_gae
      x-google-backend:
        address: https://<PROJECT_ID>.appspot.com
      parameters:
        - in: query
          name: name
          required: false
          type: string
      responses:
        '200':
          description: A successful response
          schema:
            type: string
  /hello-gae2:
    get:
      summary: Greet a user from App Engine
      operationId: hello_gae
      x-google-backend:
        address: https://<SERVICE-dot-PROJECT_ID>.appspot.com
      parameters:
        - in: query
          name: name
          required: false
          type: string
      responses:
        '200':
          description: A successful response
          schema:
            type: string
  /hello-gae3:
    get:
      summary: Greet a user from App Engine
      operationId: hello_gae
      x-google-backend:
        address: https://<SERVICE-dot-PROJECT_ID>.appspot.com
      parameters:
        - in: query
          name: name
          required: false
          type: string
      responses:
        '200':
          description: A successful response
          schema:
            type: string
securityDefinitions:
  # This section configures basic authentication with an API key.
  api_key:
    type: "apiKey"
    name: "key"
    in: "query"

参考文献：

Getting Started with Endpoints for Cloud Run

使用 Google ESP 代理多个服务

Proxying to multiple services using Google ESP

google-cloud-endpoints

google-cloud-platform