# https://www.express-gateway.io/docs/configuration/gateway.config.yml/
# https://www.cnblogs.com/PLM-Teamcenter/p/16388583.html

http:
  port: 8080
admin:
  port: 9876
  host: localhost
# 指定具体的客户端 - 绑定域名和 被映射的接口地址  
apiEndpoints:
  api:
    host: localhost
    paths: '/ip'

  user_client:
    host: localhost
    paths: 
      - /user
      - /user/*

  articles_client:
    host: localhost
    paths: 
      - /articles
      - /articles/*

# 声明网关可以管理的微服务 - 被代理的地址    
serviceEndpoints:
  userbin:
    url: 'http://127.0.0.1:3002'

  articlesbin:
    url: 'http://127.0.0.1:3003' 

  httpbin:
    url: 'https://httpbin.org'

policies:
  - basic-auth
  - cors
  - expression
  - key-auth
  - log
  - oauth2
  - proxy
  - rate-limit

# 通过管道把客户端与微服务串联起来
pipelines:

  default:
    apiEndpoints:
      - api
    policies:
    # Uncomment `key-auth:` when instructed to in the Getting Started guide.
    # - key-auth:
    # proxy；它的作用是代理/转发请求，这里指定了将 apiEndpoints 来的请求转发到前面定义了的微服务 
      - proxy:
          - action:
              serviceEndpoint: httpbin 
              changeOrigin: true
       
  pipeline_user:
    apiEndpoints:
      - user_client
    policies:
      - proxy:
          - action:
              serviceEndpoint: userbin
              changeOrigin: true  

  pipeline_articles:
    apiEndpoints:
      - articles_client
    policies:
      - proxy:
          - action:
              serviceEndpoint: articlesbin
              changeOrigin: true