github.com/dubbogo/gost@v1.14.0/database/kv/nacos/config_client.go (about)

     1  /*
     2   * Licensed to the Apache Software Foundation (ASF) under one or more
     3   * contributor license agreements.  See the NOTICE file distributed with
     4   * this work for additional information regarding copyright ownership.
     5   * The ASF licenses this file to You under the Apache License, Version 2.0
     6   * (the "License"); you may not use this file except in compliance with
     7   * the License.  You may obtain a copy of the License at
     8   *
     9   *     http://www.apache.org/licenses/LICENSE-2.0
    10   *
    11   * Unless required by applicable law or agreed to in writing, software
    12   * distributed under the License is distributed on an "AS IS" BASIS,
    13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    14   * See the License for the specific language governing permissions and
    15   * limitations under the License.
    16   */
    17  
    18  package nacos
    19  
    20  import (
    21  	"sync"
    22  	"sync/atomic"
    23  )
    24  
    25  import (
    26  	"github.com/nacos-group/nacos-sdk-go/v2/clients"
    27  	"github.com/nacos-group/nacos-sdk-go/v2/clients/config_client"
    28  	"github.com/nacos-group/nacos-sdk-go/v2/common/constant"
    29  	"github.com/nacos-group/nacos-sdk-go/v2/vo"
    30  )
    31  
    32  var (
    33  	configClientPool     nacosConfigClientPool
    34  	configClientPoolOnce sync.Once
    35  )
    36  
    37  type nacosConfigClientPool struct {
    38  	sync.Mutex
    39  	configClient map[string]*NacosConfigClient
    40  }
    41  
    42  type NacosConfigClient struct {
    43  	name        string
    44  	clientLock  sync.Mutex // for Client
    45  	client      config_client.IConfigClient
    46  	config      vo.NacosClientParam //conn config
    47  	valid       uint32
    48  	activeCount uint32
    49  	share       bool
    50  }
    51  
    52  func initNacosConfigClientPool() {
    53  	configClientPool.configClient = make(map[string]*NacosConfigClient)
    54  }
    55  
    56  func (n *NacosConfigClient) newConfigClient() error {
    57  	client, err := clients.NewConfigClient(n.config)
    58  	if err != nil {
    59  		return err
    60  	}
    61  	n.activeCount++
    62  	atomic.StoreUint32(&n.valid, 1)
    63  	n.client = client
    64  	return nil
    65  }
    66  
    67  // NewNacosConfigClient create config client
    68  func NewNacosConfigClient(name string, share bool, sc []constant.ServerConfig,
    69  	cc constant.ClientConfig) (*NacosConfigClient, error) {
    70  
    71  	configClient := &NacosConfigClient{
    72  		name:        name,
    73  		activeCount: 0,
    74  		share:       share,
    75  		config:      vo.NacosClientParam{ClientConfig: &cc, ServerConfigs: sc},
    76  	}
    77  	if !share {
    78  		return configClient, configClient.newConfigClient()
    79  	}
    80  	configClientPoolOnce.Do(initNacosConfigClientPool)
    81  	configClientPool.Lock()
    82  	defer configClientPool.Unlock()
    83  	if client, ok := configClientPool.configClient[name]; ok {
    84  		client.activeCount++
    85  		return client, nil
    86  	}
    87  
    88  	err := configClient.newConfigClient()
    89  	if err == nil {
    90  		configClientPool.configClient[name] = configClient
    91  	}
    92  	return configClient, err
    93  }
    94  
    95  // Client Get NacosConfigClient
    96  func (n *NacosConfigClient) Client() config_client.IConfigClient {
    97  	return n.client
    98  }
    99  
   100  // SetClient Set NacosConfigClient
   101  func (n *NacosConfigClient) SetClient(client config_client.IConfigClient) {
   102  	n.clientLock.Lock()
   103  	n.client = client
   104  	n.clientLock.Unlock()
   105  }
   106  
   107  // NacosClientValid Get nacos client valid status
   108  func (n *NacosConfigClient) NacosClientValid() bool {
   109  
   110  	return atomic.LoadUint32(&n.valid) == 1
   111  }
   112  
   113  // Close close client
   114  func (n *NacosConfigClient) Close() {
   115  	configClientPool.Lock()
   116  	defer configClientPool.Unlock()
   117  	if n.client == nil {
   118  		return
   119  	}
   120  	n.activeCount--
   121  	if n.share {
   122  		if n.activeCount == 0 {
   123  			n.client = nil
   124  			atomic.StoreUint32(&n.valid, 0)
   125  			delete(configClientPool.configClient, n.name)
   126  		}
   127  	} else {
   128  		n.client = nil
   129  		atomic.StoreUint32(&n.valid, 0)
   130  		delete(configClientPool.configClient, n.name)
   131  	}
   132  }