2017-10-27 19:43:26 +05:30
|
|
|
// Copyright 2017 The etcd Authors
|
|
|
|
//
|
|
|
|
// 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 namespace is a clientv3 wrapper that translates all keys to begin
|
|
|
|
// with a given prefix.
|
|
|
|
//
|
|
|
|
// First, create a client:
|
|
|
|
//
|
|
|
|
// cli, err := clientv3.New(clientv3.Config{Endpoints: []string{"localhost:2379"}})
|
|
|
|
// if err != nil {
|
|
|
|
// // handle error!
|
|
|
|
// }
|
|
|
|
//
|
|
|
|
// Next, override the client interfaces:
|
|
|
|
//
|
|
|
|
// unprefixedKV := cli.KV
|
|
|
|
// cli.KV = namespace.NewKV(cli.KV, "my-prefix/")
|
|
|
|
// cli.Watcher = namespace.NewWatcher(cli.Watcher, "my-prefix/")
|
|
|
|
// cli.Lease = namespace.NewLease(cli.Lease, "my-prefix/")
|
|
|
|
//
|
|
|
|
// Now calls using 'cli' will namespace / prefix all keys with "my-prefix/":
|
|
|
|
//
|
|
|
|
// cli.Put(context.TODO(), "abc", "123")
|
|
|
|
// resp, _ := unprefixedKV.Get(context.TODO(), "my-prefix/abc")
|
|
|
|
// fmt.Printf("%s\n", resp.Kvs[0].Value)
|
|
|
|
// // Output: 123
|
|
|
|
// unprefixedKV.Put(context.TODO(), "my-prefix/abc", "456")
|
2020-01-31 15:02:00 +05:30
|
|
|
// resp, _ = cli.Get(context.TODO(), "abc")
|
2017-10-27 19:43:26 +05:30
|
|
|
// fmt.Printf("%s\n", resp.Kvs[0].Value)
|
|
|
|
// // Output: 456
|
|
|
|
//
|
|
|
|
package namespace
|