Aetherance commented on issue #3250:
URL: https://github.com/apache/dubbo-go/issues/3250#issuecomment-4060222474
```go
func (p *PriorityRouter) Route(invokers []base.Invoker, url *common.URL,
invocation base.Invocation) []base.Invoker {
// ...
// get prefix from invoker
application := invokers[0].GetURL().GetParam(constant.Tagkey, "")
key := strings.Join([]string{application,
constant.TagRouterRuleSuffix}, "")
value, ok := p.routerConfigs.Load(key)
// ...
}
```
```go
func (p *PriorityRouter) Notify(invokers []base.Invoker) {
application := invokers[0].GetURL().GetParam(constant.ApplicationKey,
"")
if application == "" {
logger.Warn("url application is empty, tag router will not be
enabled")
return
}
// ...
key := strings.Join([]string{application,
constant.TagRouterRuleSuffix}, "")
// ...
p.Process(&config_center.ConfigChangeEvent{Key: key, Value: value,
ConfigType: remoting.EventTypeAdd})
}
func (p *PriorityRouter) Process(event *config_center.ConfigChangeEvent) {
// ...
p.routerConfigs.Store(event.Key, *routerConfig)
logger.Infof("[tag router]Parse tag router config
success,routerConfig=%+v", routerConfig)
}
```
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