| /* |
| * 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 nacos |
| |
| import ( |
| "sync" |
| ) |
| |
| import ( |
| "github.com/nacos-group/nacos-sdk-go/vo" |
| perrors "github.com/pkg/errors" |
| ) |
| |
| import ( |
| "github.com/apache/dubbo-go/common" |
| "github.com/apache/dubbo-go/common/constant" |
| "github.com/apache/dubbo-go/common/logger" |
| "github.com/apache/dubbo-go/config_center" |
| "github.com/apache/dubbo-go/config_center/parser" |
| ) |
| |
| const nacosClientName = "nacos config_center" |
| |
| type nacosDynamicConfiguration struct { |
| url *common.URL |
| rootPath string |
| wg sync.WaitGroup |
| cltLock sync.Mutex |
| done chan struct{} |
| client *NacosClient |
| keyListeners sync.Map |
| parser parser.ConfigurationParser |
| } |
| |
| func newNacosDynamicConfiguration(url *common.URL) (*nacosDynamicConfiguration, error) { |
| c := &nacosDynamicConfiguration{ |
| rootPath: "/" + url.GetParam(constant.CONFIG_NAMESPACE_KEY, config_center.DEFAULT_GROUP) + "/config", |
| url: url, |
| done: make(chan struct{}), |
| } |
| err := ValidateNacosClient(c, WithNacosName(nacosClientName)) |
| if err != nil { |
| logger.Errorf("nacos client start error ,error message is %v", err) |
| return nil, err |
| } |
| c.wg.Add(1) |
| go HandleClientRestart(c) |
| return c, err |
| |
| } |
| |
| // AddListener Add listener |
| func (n *nacosDynamicConfiguration) AddListener(key string, listener config_center.ConfigurationListener, opions ...config_center.Option) { |
| n.addListener(key, listener) |
| } |
| |
| // RemoveListener Remove listener |
| func (n *nacosDynamicConfiguration) RemoveListener(key string, listener config_center.ConfigurationListener, opions ...config_center.Option) { |
| n.removeListener(key, listener) |
| } |
| |
| //nacos distinguishes configuration files based on group and dataId. defalut group = "dubbo" and dataId = key |
| func (n *nacosDynamicConfiguration) GetProperties(key string, opts ...config_center.Option) (string, error) { |
| return n.GetRule(key, opts...) |
| } |
| |
| // GetInternalProperty Get properties value by key |
| func (n *nacosDynamicConfiguration) GetInternalProperty(key string, opts ...config_center.Option) (string, error) { |
| return n.GetProperties(key, opts...) |
| } |
| |
| // GetRule Get router rule |
| func (n *nacosDynamicConfiguration) GetRule(key string, opts ...config_center.Option) (string, error) { |
| tmpOpts := &config_center.Options{} |
| for _, opt := range opts { |
| opt(tmpOpts) |
| } |
| content, err := (*n.client.Client()).GetConfig(vo.ConfigParam{ |
| DataId: key, |
| Group: tmpOpts.Group, |
| }) |
| if err != nil { |
| return "", perrors.WithStack(err) |
| } else { |
| return string(content), nil |
| } |
| } |
| |
| // Parser Get Parser |
| func (n *nacosDynamicConfiguration) Parser() parser.ConfigurationParser { |
| return n.parser |
| } |
| |
| // SetParser Set Parser |
| func (n *nacosDynamicConfiguration) SetParser(p parser.ConfigurationParser) { |
| n.parser = p |
| } |
| |
| // NacosClient Get Nacos Client |
| func (n *nacosDynamicConfiguration) NacosClient() *NacosClient { |
| return n.client |
| } |
| |
| // SetNacosClient Set Nacos Client |
| func (n *nacosDynamicConfiguration) SetNacosClient(client *NacosClient) { |
| n.cltLock.Lock() |
| n.client = client |
| n.cltLock.Unlock() |
| } |
| |
| // WaitGroup for wait group control, zk client listener & zk client container |
| func (n *nacosDynamicConfiguration) WaitGroup() *sync.WaitGroup { |
| return &n.wg |
| } |
| |
| // GetDone For nacos client control RestartCallBack() bool |
| func (n *nacosDynamicConfiguration) GetDone() chan struct{} { |
| return n.done |
| } |
| |
| // GetUrl Get Url |
| func (n *nacosDynamicConfiguration) GetUrl() common.URL { |
| return *n.url |
| } |
| |
| // Destroy Destroy configuration instance |
| func (n *nacosDynamicConfiguration) Destroy() { |
| close(n.done) |
| n.wg.Wait() |
| n.closeConfigs() |
| } |
| |
| // IsAvailable Get available status |
| func (n *nacosDynamicConfiguration) IsAvailable() bool { |
| select { |
| case <-n.done: |
| return false |
| default: |
| return true |
| } |
| } |
| |
| func (r *nacosDynamicConfiguration) closeConfigs() { |
| r.cltLock.Lock() |
| client := r.client |
| r.client = nil |
| r.cltLock.Unlock() |
| // Close the old client first to close the tmp node |
| client.Close() |
| logger.Infof("begin to close provider nacos client") |
| } |