| /* |
| * 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 adaptivesvc |
| |
| import ( |
| "sync" |
| ) |
| |
| import ( |
| clusterpkg "dubbo.apache.org/dubbo-go/v3/cluster/cluster" |
| "dubbo.apache.org/dubbo-go/v3/cluster/directory" |
| "dubbo.apache.org/dubbo-go/v3/common/constant" |
| "dubbo.apache.org/dubbo-go/v3/common/extension" |
| "dubbo.apache.org/dubbo-go/v3/protocol" |
| ) |
| |
| var ( |
| once sync.Once |
| instance clusterpkg.Cluster |
| ) |
| |
| func init() { |
| extension.SetCluster(constant.ClusterKeyAdaptiveService, newAdaptiveServiceCluster) |
| } |
| |
| // adaptiveServiceCluster is a cluster for adaptive service. |
| type adaptiveServiceCluster struct{} |
| |
| func newAdaptiveServiceCluster() clusterpkg.Cluster { |
| if instance == nil { |
| once.Do(func() { |
| instance = &adaptiveServiceCluster{} |
| }) |
| } |
| return instance |
| } |
| |
| func (c *adaptiveServiceCluster) Join(directory directory.Directory) protocol.Invoker { |
| return clusterpkg.BuildInterceptorChain(newAdaptiveServiceClusterInvoker(directory)) |
| } |