| /* |
| * 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 remote |
| |
| import ( |
| "sync" |
| ) |
| |
| import ( |
| "github.com/dubbogo/gost/log/logger" |
| |
| "go.uber.org/atomic" |
| ) |
| |
| import ( |
| "dubbo.apache.org/dubbo-go/v3/common" |
| "dubbo.apache.org/dubbo-go/v3/common/constant" |
| "dubbo.apache.org/dubbo-go/v3/common/extension" |
| "dubbo.apache.org/dubbo-go/v3/metadata/definition" |
| "dubbo.apache.org/dubbo-go/v3/metadata/identifier" |
| "dubbo.apache.org/dubbo-go/v3/metadata/report/delegate" |
| "dubbo.apache.org/dubbo-go/v3/metadata/service" |
| "dubbo.apache.org/dubbo-go/v3/metadata/service/local" |
| "dubbo.apache.org/dubbo-go/v3/registry" |
| ) |
| |
| type MetadataService struct { |
| *local.MetadataService |
| exportedRevision atomic.String |
| subscribedRevision atomic.String |
| delegateReport *delegate.MetadataReport |
| } |
| |
| var ( |
| metadataServiceOnce sync.Once |
| remoteMetadataServiceInstance service.RemoteMetadataService |
| ) |
| |
| func init() { |
| extension.SetRemoteMetadataService(GetRemoteMetadataService) |
| } |
| |
| // GetRemoteMetadataService will create a new remote MetadataService instance |
| func GetRemoteMetadataService() (service.RemoteMetadataService, error) { |
| var err error |
| metadataServiceOnce.Do(func() { |
| var mr *delegate.MetadataReport |
| mr, err = delegate.NewMetadataReport() |
| if err != nil { |
| return |
| } |
| // it will never return error |
| inms, _ := local.GetLocalMetadataService() |
| remoteMetadataServiceInstance = &MetadataService{ |
| // todo serviceName |
| //BaseMetadataService: service.NewBaseMetadataService(""), |
| MetadataService: inms.(*local.MetadataService), |
| delegateReport: mr, |
| } |
| }) |
| return remoteMetadataServiceInstance, err |
| } |
| |
| // PublishMetadata publishes the metadata info of @service to remote metadata center |
| func (s *MetadataService) PublishMetadata(service string) { |
| info, err := s.MetadataService.GetMetadataInfo("") |
| if err != nil { |
| logger.Errorf("GetMetadataInfo error[%v]", err) |
| return |
| } |
| if info.HasReported() { |
| return |
| } |
| id := identifier.NewSubscriberMetadataIdentifier(service, info.CalAndGetRevision()) |
| err = s.delegateReport.PublishAppMetadata(id, info) |
| if err != nil { |
| logger.Errorf("Publishing metadata to error[%v]", err) |
| return |
| } |
| info.MarkReported() |
| } |
| |
| // GetMetadata get the medata info of service from report |
| func (s *MetadataService) GetMetadata(instance registry.ServiceInstance) (*common.MetadataInfo, error) { |
| revision := instance.GetMetadata()[constant.ExportedServicesRevisionPropertyName] |
| id := identifier.NewSubscriberMetadataIdentifier(instance.GetServiceName(), revision) |
| return s.delegateReport.GetAppMetadata(id) |
| } |
| |
| // PublishServiceDefinition will call remote metadata's StoreProviderMetadata to store url info and service definition |
| func (s *MetadataService) PublishServiceDefinition(url *common.URL) error { |
| interfaceName := url.GetParam(constant.InterfaceKey, "") |
| isGeneric := url.GetParamBool(constant.GenericKey, false) |
| if common.RoleType(common.PROVIDER).Role() == url.GetParam(constant.SideKey, "") { |
| if len(interfaceName) > 0 && !isGeneric { |
| sv := common.ServiceMap.GetServiceByServiceKey(url.Protocol, url.ServiceKey()) |
| sd := definition.BuildFullDefinition(*sv, url) |
| id := &identifier.MetadataIdentifier{ |
| BaseMetadataIdentifier: identifier.BaseMetadataIdentifier{ |
| ServiceInterface: interfaceName, |
| Version: url.GetParam(constant.VersionKey, ""), |
| Group: url.GetParam(constant.GroupKey, constant.Dubbo), |
| Side: url.GetParam(constant.SideKey, constant.ProviderProtocol), |
| }, |
| } |
| s.delegateReport.StoreProviderMetadata(id, sd) |
| return nil |
| } |
| logger.Errorf("publishProvider interfaceName is empty . providerUrl:%v ", url) |
| } else { |
| params := make(map[string]string, len(url.GetParams())) |
| url.RangeParams(func(key, value string) bool { |
| params[key] = value |
| return true |
| }) |
| id := &identifier.MetadataIdentifier{ |
| BaseMetadataIdentifier: identifier.BaseMetadataIdentifier{ |
| ServiceInterface: interfaceName, |
| Version: url.GetParam(constant.VersionKey, ""), |
| Group: url.GetParam(constant.GroupKey, constant.Dubbo), |
| Side: url.GetParam(constant.SideKey, "consumer"), |
| }, |
| } |
| s.delegateReport.StoreConsumerMetadata(id, params) |
| return nil |
| } |
| |
| return nil |
| } |