dubbo.apache.org/dubbo-go/v3@v3.1.1/remoting/etcdv3/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 etcdv3
    19  
    20  import (
    21  	gxetcd "github.com/dubbogo/gost/database/kv/etcd/v3"
    22  	"github.com/dubbogo/gost/log/logger"
    23  
    24  	perrors "github.com/pkg/errors"
    25  )
    26  
    27  // ValidateClient validates client and sets options
    28  func ValidateClient(container clientFacade, opts ...gxetcd.Option) error {
    29  	options := &gxetcd.Options{}
    30  	for _, opt := range opts {
    31  		opt(options)
    32  	}
    33  	lock := container.ClientLock()
    34  	lock.Lock()
    35  	defer lock.Unlock()
    36  
    37  	// new Client
    38  	if container.Client() == nil {
    39  		newClient, err := gxetcd.NewClient(options.Name, options.Endpoints, options.Timeout, options.Heartbeat)
    40  		if err != nil {
    41  			logger.Warnf("new etcd client (name{%s}, etcd addresses{%v}, timeout{%d}) = error{%v}",
    42  				options.Name, options.Endpoints, options.Timeout, err)
    43  			return perrors.WithMessagef(err, "new client (address:%+v)", options.Endpoints)
    44  		}
    45  		container.SetClient(newClient)
    46  	}
    47  
    48  	// Client lose connection with etcd server
    49  	if container.Client().GetRawClient() == nil {
    50  		newClient, err := gxetcd.NewClient(options.Name, options.Endpoints, options.Timeout, options.Heartbeat)
    51  		if err != nil {
    52  			logger.Warnf("new etcd client (name{%s}, etcd addresses{%v}, timeout{%d}) = error{%v}",
    53  				options.Name, options.Endpoints, options.Timeout, err)
    54  			return perrors.WithMessagef(err, "new client (address:%+v)", options.Endpoints)
    55  		}
    56  		container.SetClient(newClient)
    57  	}
    58  
    59  	return nil
    60  }
    61  
    62  // nolint
    63  func NewServiceDiscoveryClient(opts ...gxetcd.Option) *gxetcd.Client {
    64  	options := &gxetcd.Options{
    65  		Heartbeat: 1, // default heartbeat
    66  	}
    67  	for _, opt := range opts {
    68  		opt(options)
    69  	}
    70  
    71  	newClient, err := gxetcd.NewClient(options.Name, options.Endpoints, options.Timeout, options.Heartbeat)
    72  	if err != nil {
    73  		logger.Errorf("new etcd client (name{%s}, etcd addresses{%v}, timeout{%d}) = error{%v}",
    74  			options.Name, options.Endpoints, options.Timeout, err)
    75  	}
    76  	return newClient
    77  }