98 lines
3.3 KiB
Go
98 lines
3.3 KiB
Go
/*
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* Copyright 1999-2020 Alibaba Group Holding Ltd.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package naming_client
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import (
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"errors"
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"github.com/nacos-group/nacos-sdk-go/clients/cache"
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"github.com/nacos-group/nacos-sdk-go/common/logger"
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"github.com/nacos-group/nacos-sdk-go/model"
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"github.com/nacos-group/nacos-sdk-go/util"
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)
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type SubscribeCallback struct {
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callbackFuncsMap cache.ConcurrentMap
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}
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func NewSubscribeCallback() SubscribeCallback {
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ed := SubscribeCallback{}
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ed.callbackFuncsMap = cache.NewConcurrentMap()
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return ed
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}
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func (ed *SubscribeCallback) AddCallbackFuncs(serviceName string, clusters string, callbackFunc *func(services []model.SubscribeService, err error)) {
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logger.Info("adding " + serviceName + " with " + clusters + " to listener map")
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key := util.GetServiceCacheKey(serviceName, clusters)
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var funcs []*func(services []model.SubscribeService, err error)
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old, ok := ed.callbackFuncsMap.Get(key)
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if ok {
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funcs = append(funcs, old.([]*func(services []model.SubscribeService, err error))...)
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}
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funcs = append(funcs, callbackFunc)
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ed.callbackFuncsMap.Set(key, funcs)
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}
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func (ed *SubscribeCallback) RemoveCallbackFuncs(serviceName string, clusters string, callbackFunc *func(services []model.SubscribeService, err error)) {
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logger.Info("removing " + serviceName + " with " + clusters + " to listener map")
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key := util.GetServiceCacheKey(serviceName, clusters)
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funcs, ok := ed.callbackFuncsMap.Get(key)
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if ok && funcs != nil {
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var newFuncs []*func(services []model.SubscribeService, err error)
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for _, funcItem := range funcs.([]*func(services []model.SubscribeService, err error)) {
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if funcItem != callbackFunc {
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newFuncs = append(newFuncs, funcItem)
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}
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}
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ed.callbackFuncsMap.Set(key, newFuncs)
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}
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}
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func (ed *SubscribeCallback) ServiceChanged(service *model.Service) {
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if service == nil || service.Name == "" {
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return
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}
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key := util.GetServiceCacheKey(service.Name, service.Clusters)
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funcs, ok := ed.callbackFuncsMap.Get(key)
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if ok {
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for _, funcItem := range funcs.([]*func(services []model.SubscribeService, err error)) {
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var subscribeServices []model.SubscribeService
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if len(service.Hosts) == 0 {
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(*funcItem)(subscribeServices, errors.New("[client.Subscribe] subscribe failed,hosts is empty"))
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return
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}
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for _, host := range service.Hosts {
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subscribeService := model.SubscribeService{
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Valid: host.Valid,
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Port: host.Port,
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Ip: host.Ip,
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Metadata: host.Metadata,
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ServiceName: host.ServiceName,
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ClusterName: host.ClusterName,
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Weight: host.Weight,
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InstanceId: host.InstanceId,
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Enable: host.Enable,
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Healthy: host.Healthy,
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}
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subscribeServices = append(subscribeServices, subscribeService)
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}
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(*funcItem)(subscribeServices, nil)
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}
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}
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}
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