路由规则

apiVersion: service.dubbo.apache.org/v1alpha1
kind: VirtualService
metadata: {name: demo-route}
spec:
  dubbo:
    # 使用正则表达式匹配service名，只有个满足该service名的请求才能路由。
    # 就此例子来说，不满足service名的请求会直接找不到provider
    # - services:
    #   - { regex: org.apache.dubbo.UserProvider* }
    - routedetail:
        - match: 
          # 匹配规则，如果（sourceLabel）客户端url满足存在参数 `trafficLabel: xxx` 的才能匹配成功
            - sourceLabels: {trafficLabel: xxx}
          name: xxx-project
          route:  # 一旦匹配上述match规则，将选择 dest_rule 里定义的名为 isolation 的子集
            - destination: {host: demo, subset: isolation}
        - match:
            - sourceLabels: {trafficLabel: testing-trunk}
          name: testing-trunk
          route: # 一旦匹配上述match规则，将选择 dest_rule 里定义的名为 testing-trunk 的子集
            - destination: {host: demo, subset: testing-trunk}
        - name: testing # 没有match，兜底逻辑，上述不满足后一定会被匹配到。
          route:
            - destination: {host: demo, subset: testing}
      services:
        - {exact: com.apache.dubbo.sample.basic.IGreeter}
  hosts: [demo] # 匹配dest_rule.yml里面的 host 为demo

apiVersion: service.dubbo.apache.org/v1alpha1
kind: DestinationRule
metadata: { name: demo-route }
spec:
  host: demo
  subsets:
    - labels: { env-sign: xxx, tag1: hello }
      name: isolation
    - labels: { env-sign: yyy }
      name: testing-trunk
    - labels: { env-sign: zzz }
      name: testing
  trafficPolicy:
    loadBalancer: { simple: ROUND_ROBIN }

  config-center:
    protocol: zookeeper
    address: 127.0.0.1:2181
    data-id: "dubbo-go-samples-configcenter-zookeeper-client"

dynamicConfiguration, err := config.GetRootConfig().ConfigCenter.GetDynamicConfiguration()
if err != nil {
  panic(err)
}

// publish mesh route config
err = dynamicConfiguration.PublishConfig("dubbo.io.MESHAPPRULE", "dubbo", MeshRouteConf)
if err != nil {
  return
}

dubbo:
  registries:
    demoZK:
      protocol: zookeeper
      timeout: 3s
      address: 127.0.0.1:2181
  protocols:
    triple:
      name: tri
      port: 20000
  provider:
    services:
      GreeterProvider:
        interface: com.apache.dubbo.sample.basic.IGreeter # must be compatible with grpc or dubbo-java
        params:
          env-sign: zzz # server label, 对应 destination Rule中的testing，即兜底逻辑