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client.go
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client.go
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/*
* Copyright (c) Huawei Technologies Co., Ltd. 2021.
* Licensed 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 etcd defines EtcdClient interface, and use "go.etcd.io/etcd/client/v3"
implements the interface.
*/
package etcd
import (
"log"
"github.com/huaweicloud/devcloud-go/common/password"
"github.com/huaweicloud/devcloud-go/common/util"
clientv3 "go.etcd.io/etcd/client/v3"
)
//go:generate mockery -name=EtcdClient
type EtcdClient interface {
Get(key string) (string, error)
Put(key, value string) (string, error)
List(prefix string) ([]*KeyValue, error)
Del(key string) (int64, error)
Watch(prefix string, startIndex int64, onEvent func(event *clientv3.Event))
Close() error
}
// CreateEtcdClient according to yaml etcdConfiguration
func CreateEtcdClient(etcdConfiguration *EtcdConfiguration) EtcdClient {
properties := &ClientProperties{
Endpoints: util.ConvertAddressStrToSlice(etcdConfiguration.Address),
}
if etcdConfiguration.Username != "" {
properties.UserName = etcdConfiguration.Username
properties.Password = password.GetDecipher().Decode(etcdConfiguration.Password)
properties.NeedAuthentication = true
}
client, err := NewEtcdV3Client(properties)
if err != nil || client == nil {
log.Printf("ERROR: create etcd client failed, err %v", err)
return nil
}
return client
}