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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,78 @@ | ||
| // Copyright 2024 CloudWeGo Authors | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| package client | ||
|
|
||
| import ( | ||
| "github.com/cloudwego/kitex/client" | ||
| "github.com/cloudwego/kitex/pkg/klog" | ||
| "github.com/kitex-contrib/config-nacos/v2/pkg/degradation" | ||
| "github.com/nacos-group/nacos-sdk-go/vo" | ||
|
|
||
| "github.com/kitex-contrib/config-nacos/nacos" | ||
| "github.com/kitex-contrib/config-nacos/utils" | ||
| ) | ||
|
|
||
| // WithDegradation sets the degradation policy from nacos configuration center. | ||
| func WithDegradation(dest, src string, nacosClient nacos.Client, opts utils.Options) []client.Option { | ||
| param, err := nacosClient.ClientConfigParam(&nacos.ConfigParamConfig{ | ||
| Category: degradationName, | ||
| ServerServiceName: dest, | ||
| ClientServiceName: src, | ||
| }) | ||
| if err != nil { | ||
| panic(err) | ||
| } | ||
|
|
||
| for _, f := range opts.NacosCustomFunctions { | ||
| f(¶m) | ||
| } | ||
|
|
||
| uniqueID := nacos.GetUniqueID() | ||
|
|
||
| degradationContainer := initDegradation(param, dest, src, nacosClient, uniqueID) | ||
|
|
||
| return []client.Option{ | ||
| client.WithACLRules(degradationContainer.GetACLRule()), | ||
| client.WithCloseCallbacks(func() error { | ||
| err := nacosClient.DeregisterConfig(param, uniqueID) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| // cancel the configuration listener when client is closed. | ||
| return nil | ||
| }), | ||
| } | ||
| } | ||
|
|
||
| func initDegradation(param vo.ConfigParam, dest, src string, | ||
| nacosClient nacos.Client, uniqueID int64, | ||
| ) *degradation.Container { | ||
| degradationContainer := degradation.NewDegradationContainer() | ||
|
|
||
| onChangeCallback := func(data string, parser nacos.ConfigParser) { | ||
| config := °radation.Config{} | ||
| err := parser.Decode(param.Type, data, config) | ||
| if err != nil { | ||
| klog.Warnf("[nacos] %s client nacos rpc degradation: unmarshal data %s failed: %s, skip...", dest, data, err) | ||
| return | ||
| } | ||
| // update degradation config | ||
| degradationContainer.NotifyPolicyChange(config) | ||
| } | ||
|
|
||
| nacosClient.RegisterConfigCallback(param, onChangeCallback, uniqueID) | ||
|
|
||
| return degradationContainer | ||
| } |
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