route call optimize

[XiaoWeiKIN]

in RegistryDirectory.List

routerChain := dir.RouterChain()

	if routerChain == nil {
		dir.invokersLock.RLock()
		defer dir.invokersLock.RUnlock()
		return dir.cacheInvokers
	}

If I didn't create the route it should just go back cacheInvokers，but NewRegistryDirectory created a default routerChain struct, so the judgment here will never be valid

[XiaoWeiKIN]

[zouyx]

fix conflicts pls

[codecov-commenter]

Codecov Report

Merging #1244 (f363886) into 1.5 (8415609) will decrease coverage by 0.46%.
The diff coverage is 56.66%.

@@            Coverage Diff             @@
##              1.5    #1244      +/-   ##
==========================================
- Coverage   58.93%   58.47%   -0.47%     
==========================================
  Files         269      273       +4     
  Lines       13180    13267      +87     
==========================================
- Hits         7768     7758      -10     
- Misses       4437     4551     +114     
+ Partials      975      958      -17     

Impacted Files	Coverage Δ
cluster/cluster_impl/mock_cluster.go	0.00% <0.00%> (ø)
common/extension/cluster_interceptor.go	0.00% <0.00%> (ø)
common/proxy/proxy_factory/default.go	13.55% <0.00%> (ø)
config/config_loader.go	38.83% <0.00%> (-0.58%)	⬇️
config/consumer_config.go	53.84% <ø> (ø)
config/metadata_report_config.go	47.05% <ø> (+2.94%)	⬆️
config/provider_config.go	54.54% <ø> (ø)
config/service_config.go	57.51% <0.00%> (ø)
config_center/configurator/mock.go	0.00% <0.00%> (ø)
config_center/configurator/override.go	72.22% <ø> (ø)
... and 105 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update a3569bf...f363886. Read the comment docs.

[AlexStocks]

@LaurenceLiZhixin @zhaoyunxing92

[zouyx]

Why will you delete this code? if you delete this code , router will not effect no longer

[XiaoWeiKIN]

因为baseDirectory在new的时候不需要创建routerChain，因为我没有创建任何路由策略，所不需要loop

[zhaoyunxing92]

approved these changes