路由狀態指令

路由狀態指令

Dubbo 的許多流量管理功能都是基於路由器實現的。在生產環境中，如果流量結果不符合預期，可以使用路由狀態指令檢查路由狀態以找出可能的問題。

參考連結：路由狀態收集

getRouterSnapshot 指令

取得路由各層目前的群組狀態。（僅支援 StateRouter）

指令：getRouterSnapshot {serviceName}

serviceName 是要收集的服務名稱，支援匹配

dubbo>getRouterSnapshot com.dubbo.dubbointegration.BackendService
com.dubbo.dubbointegration.BackendService@2c2e824a
[ All Invokers: 2 ] [ Valid Invokers: 2 ]

MockInvokersSelector Total: 2
[ Mocked -> Empty (Total: 0) ]
[ Normal -> 172.18.111.187:20880,172.18.111.183:20880 (Total: 2) ]
            ↓
StandardMeshRuleRouter not support
            ↓
TagStateRouter not support
            ↓
ServiceStateRouter not support
            ↓
AppStateRouter not support
            ↓
TailStateRouterEnd


dubbo>

enableRouterSnapshot 指令

啟用路由結果收集模式

指令：enableRouterSnapshot {serviceName}

serviceName 是要收集的服務名稱，支援匹配

dubbo>enableRouterSnapshot com.dubbo.*
OK. Found service count: 1. This will cause performance degradation, please be careful!

dubbo>

disableRouterSnapshot 指令

停用路由結果收集模式

指令：disableRouterSnapshot {serviceName}

serviceName 是要收集的服務名稱，支援匹配

dubbo>disableRouterSnapshot com.dubbo.*
OK. Found service count: 1

dubbo>

getEnabledRouterSnapshot 指令

取得目前正在收集的服務

dubbo>getEnabledRouterSnapshot
com.dubbo.dubbointegration.BackendService

dubbo>

getRecentRouterSnapshot 指令

透過 qos 指令取得歷史路由狀態。（最多儲存 32 個結果）

dubbo>getRecentRouterSnapshot
1658224330156 - Router snapshot service com.dubbo.dubbointegration.BackendService from registry 172.18.111.184 on the consumer 172.18.111.184 using the dubbo version 3.0.9 is below:
[ Parent (Input: 2) (Current Node Output: 2) (Chain Node Output: 2) ] Input: 172.18.111.187:20880,172.18.111.183:20880 -> Chain Node Output: 172.18.111.187:20880.3172.18 :20880
  [ MockInvokersSelector (Input: 2) (Current Node Output: 2) (Chain Node Output: 2) Router message: invocation.need.mock not set. Return normal Invokers. ] Current Node Output: 172.18.111.187:20880,172.183.111. :20880
    [ StandardMeshRuleRouter (Input: 2) (Current Node Output: 2) (Chain Node Output: 2) Router message: MeshRuleCache has not been built. Skip route. ] Current Node Output: 172.18.111.187:20880,172.1803:1121.88
      [ TagStateRouter (Input: 2) (Current Node Output: 2) (Chain Node Output: 2) Router message: Disable Tag Router. Reason: tagRouterRule is invalid or disabled ] Current Node Output: 172.18.111.187:20880,172.183.111. 20880
        [ ServiceStateRouter (Input: 2) (Current Node Output: 2) (Chain Node Output: 2) Router message: Directly return. Reason: Invokers from previous router is empty or conditionRouters is empty. ] Current Node Output: 172.18.111.187:20880 ,172.18.111.183:20880
          [ AppStateRouter (Input: 2) (Current Node Output: 2) (Chain Node Output: 2) Router message: Directly return. Reason: Invokers from previous router is empty or conditionRouters is empty. ] Current Node Output: 172.18.111.187:20880 ,172.18.111.183:20880

1658224330156 - Router snapshot service com.dubbo.dubbointegration.BackendService from registry 172.18.111.184 on the consumer 172.18.111.184 using the dubbo version 3.0.9 is below:
[ Parent (Input: 2) (Current Node Output: 2) (Chain Node Output: 2) ] Input: 172.18.111.187:20880,172.18.111.183:20880 -> Chain Node Output: 172.18.111.187:20880.3172.18 :20880
  [ MockInvokersSelector (Input: 2) (Current Node Output: 2) (Chain Node Output: 2) Router message: invocation.need.mock not set. Return normal Invokers. ] Current Node Output: 172.18.111.187:20880,172.183.111. :20880
    [ StandardMeshRuleRouter (Input: 2) (Current Node Output: 2) (Chain Node Output: 2) Router message: MeshRuleCache has not been built. Skip route. ] Current Node Output: 172.18.111.187:20880,172.1803:1121.88
      [ TagStateRouter (Input: 2) (Current Node Output: 2) (Chain Node Output: 2) Router message: Disable Tag Router. Reason: tagRouterRule is invalid or disabled ] Current Node Output: 172.18.111.187:20880,172.183.111. 20880
        [ ServiceStateRouter (Input: 2) (Current Node Output: 2) (Chain Node Output: 2) Router message: Directly return. Reason: Invokers from previous router is empty or conditionRouters is empty. ] Current Node Output: 172.18.111.187:20880 ,172.18.111.183:20880
          [ AppStateRouter (Input: 2) (Current Node Output: 2) (Chain Node Output: 2) Router message: Directly return. Reason: Invokers from previous router is empty or conditionRouters is empty. ] Current Node Output: 172.18.111.187:20880 ,172.18.111.183:20880

···

dubbo>

最後修改日期：2023 年 1 月 2 日：增強英文文件 (#1798) (95a9f4f6c1c)