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registry.go
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/
registry.go
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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 registry
import (
"net/url"
"sync"
)
import (
"dubbo.apache.org/dubbo-go/v3/common"
"dubbo.apache.org/dubbo-go/v3/metadata/report"
dubboRegistry "dubbo.apache.org/dubbo-go/v3/registry"
gxset "github.com/dubbogo/gost/container/set"
)
import (
"github.com/apache/dubbo-kubernetes/pkg/core/consts"
"github.com/apache/dubbo-kubernetes/pkg/core/logger"
core_manager "github.com/apache/dubbo-kubernetes/pkg/core/resources/manager"
"github.com/apache/dubbo-kubernetes/pkg/events"
)
type Registry struct {
delegate dubboRegistry.Registry
sdDelegate dubboRegistry.ServiceDiscovery
}
func NewRegistry(delegate dubboRegistry.Registry, sdDelegate dubboRegistry.ServiceDiscovery) *Registry {
return &Registry{
delegate: delegate,
sdDelegate: sdDelegate,
}
}
func (r *Registry) Destroy() error {
return nil
}
func (r *Registry) Delegate() dubboRegistry.Registry {
return r.delegate
}
func (r *Registry) Subscribe(
metadataReport report.MetadataReport,
resourceManager core_manager.ResourceManager,
cache *sync.Map,
discovery dubboRegistry.ServiceDiscovery,
out events.Emitter,
systemNamespace string,
) error {
queryParams := url.Values{
consts.InterfaceKey: {consts.AnyValue},
consts.GroupKey: {consts.AnyValue},
consts.VersionKey: {consts.AnyValue},
consts.ClassifierKey: {consts.AnyValue},
consts.CategoryKey: {consts.ProvidersCategory +
"," + consts.ConsumersCategory +
"," + consts.RoutersCategory +
"," + consts.ConfiguratorsCategory},
consts.EnabledKey: {consts.AnyValue},
consts.CheckKey: {"false"},
}
subscribeUrl, _ := common.NewURL(common.GetLocalIp()+":0",
common.WithProtocol(consts.AdminProtocol),
common.WithParams(queryParams))
listener := NewNotifyListener(resourceManager, cache, discovery, out)
go func() {
err := r.delegate.Subscribe(subscribeUrl, listener)
if err != nil {
logger.Error("Failed to subscribe to registry, might not be able to show services of the cluster!")
}
}()
getMappingList := func(group string) (map[string]*gxset.HashSet, error) {
keys, err := metadataReport.GetConfigKeysByGroup(group)
if err != nil {
return nil, err
}
list := make(map[string]*gxset.HashSet)
for k := range keys.Items {
interfaceKey, _ := k.(string)
if !(interfaceKey == "org.apache.dubbo.mock.api.MockService") {
rule, err := metadataReport.GetServiceAppMapping(interfaceKey, group, nil)
if err != nil {
return nil, err
}
list[interfaceKey] = rule
}
}
return list, nil
}
go func() {
mappings, err := getMappingList("mapping")
if err != nil {
logger.Error("Failed to get mapping")
}
for interfaceKey, oldApps := range mappings {
mappingListener := NewMappingListener(interfaceKey, oldApps, listener, out, systemNamespace, r.sdDelegate)
apps, _ := metadataReport.GetServiceAppMapping(interfaceKey, "mapping", mappingListener)
delSDListener := NewDubboSDNotifyListener(apps)
for appTmp := range apps.Items {
app := appTmp.(string)
instances := r.sdDelegate.GetInstances(app)
logger.Infof("Synchronized instance notification on subscription, instance list size %d", len(instances))
if len(instances) > 0 {
err = delSDListener.OnEvent(&dubboRegistry.ServiceInstancesChangedEvent{
ServiceName: app,
Instances: instances,
})
if err != nil {
logger.Warnf("[ServiceDiscoveryRegistry] ServiceInstancesChangedListenerImpl handle error:%v", err)
}
}
}
delSDListener.AddListenerAndNotify(interfaceKey, listener)
err = r.sdDelegate.AddListener(delSDListener)
if err != nil {
logger.Warnf("Failed to Add Listener")
}
}
}()
return nil
}