| /* |
| * 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 configurable |
| |
| import ( |
| "strconv" |
| "sync" |
| ) |
| |
| import ( |
| "github.com/pkg/errors" |
| ) |
| |
| import ( |
| "dubbo.apache.org/dubbo-go/v3/common" |
| "dubbo.apache.org/dubbo-go/v3/common/constant" |
| "dubbo.apache.org/dubbo-go/v3/common/logger" |
| "dubbo.apache.org/dubbo-go/v3/config" |
| _ "dubbo.apache.org/dubbo-go/v3/metadata/mapping/metadata" |
| "dubbo.apache.org/dubbo-go/v3/metadata/service" |
| "dubbo.apache.org/dubbo-go/v3/metadata/service/exporter" |
| _ "dubbo.apache.org/dubbo-go/v3/metadata/service/remote" |
| _ "dubbo.apache.org/dubbo-go/v3/protocol/dubbo" |
| ) |
| |
| // MetadataServiceExporter is the ConfigurableMetadataServiceExporter which implement MetadataServiceExporter interface |
| type MetadataServiceExporter struct { |
| ServiceConfig *config.ServiceConfig |
| lock sync.RWMutex |
| metadataService service.MetadataService |
| } |
| |
| // NewMetadataServiceExporter will return a service_exporter.MetadataServiceExporter with the specified metadata service |
| func NewMetadataServiceExporter(metadataService service.MetadataService) exporter.MetadataServiceExporter { |
| return &MetadataServiceExporter{ |
| metadataService: metadataService, |
| } |
| } |
| |
| // Export will export the metadataService |
| func (exporter *MetadataServiceExporter) Export(url *common.URL) error { |
| if !exporter.IsExported() { |
| if url == nil || url.SubURL == nil { |
| return errors.New("metadata server url is nil, pls check your configuration") |
| } |
| version, _ := exporter.metadataService.Version() |
| exporter.lock.Lock() |
| defer exporter.lock.Unlock() |
| exporter.ServiceConfig = config.NewServiceConfig( |
| config.WithServiceID(constant.SIMPLE_METADATA_SERVICE_NAME), |
| config.WithServiceProtocolKeys(constant.DEFAULT_PROTOCOL), |
| config.WithServiceProtocol(constant.DEFAULT_PROTOCOL, config.NewProtocolConfig( |
| config.WithProtocolName(constant.DEFAULT_PROTOCOL), |
| config.WithProtocolPort(strconv.Itoa(constant.DEFAULT_METADATAPORT)), |
| )), |
| config.WithServiceRegistry("N/A"), |
| config.WithServiceInterface(constant.METADATA_SERVICE_NAME), |
| config.WithServiceGroup(config.GetApplicationConfig().Name), |
| config.WithServiceVersion(version), |
| config.WithProxyFactoryKey(constant.DEFAULT_Key), |
| config.WithServiceInterface(constant.METADATA_SERVICE_NAME), |
| config.WithServiceMetadataType(constant.REMOTE_METADATA_STORAGE_TYPE), |
| ) |
| exporter.ServiceConfig.Implement(exporter.metadataService) |
| err := exporter.ServiceConfig.Export() |
| |
| logger.Infof("The MetadataService exports urls : %v ", exporter.ServiceConfig.GetExportedUrls()) |
| return err |
| } |
| logger.Warnf("The MetadataService has been exported : %v ", exporter.ServiceConfig.GetExportedUrls()) |
| return nil |
| } |
| |
| // Unexport will unexport the metadataService |
| func (exporter *MetadataServiceExporter) Unexport() { |
| if exporter.IsExported() { |
| exporter.ServiceConfig.Unexport() |
| } |
| } |
| |
| // GetExportedURLs will return the urls that export use. |
| // Noticeļ¼The exported url is not same as url in registry , for example it lack the ip. |
| func (exporter *MetadataServiceExporter) GetExportedURLs() []*common.URL { |
| return exporter.ServiceConfig.GetExportedUrls() |
| } |
| |
| // isExported will return is metadataServiceExporter exported or not |
| func (exporter *MetadataServiceExporter) IsExported() bool { |
| exporter.lock.RLock() |
| defer exporter.lock.RUnlock() |
| return exporter.ServiceConfig != nil && exporter.ServiceConfig.IsExport() |
| } |