44 lines
1.5 KiB
Go
44 lines
1.5 KiB
Go
// Copyright 2017 The etcd Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// Package namespace is a clientv3 wrapper that translates all keys to begin
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// with a given prefix.
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//
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// First, create a client:
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//
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// cli, err := clientv3.New(clientv3.Config{Endpoints: []string{"localhost:2379"}})
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// if err != nil {
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// // handle error!
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// }
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//
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// Next, override the client interfaces:
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//
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// unprefixedKV := cli.KV
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// cli.KV = namespace.NewKV(cli.KV, "my-prefix/")
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// cli.Watcher = namespace.NewWatcher(cli.Watcher, "my-prefix/")
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// cli.Lease = namespace.NewLease(cli.Lease, "my-prefix/")
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//
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// Now calls using 'cli' will namespace / prefix all keys with "my-prefix/":
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//
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// cli.Put(context.TODO(), "abc", "123")
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// resp, _ := unprefixedKV.Get(context.TODO(), "my-prefix/abc")
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// fmt.Printf("%s\n", resp.Kvs[0].Value)
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// // Output: 123
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// unprefixedKV.Put(context.TODO(), "my-prefix/abc", "456")
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// resp, _ = cli.Get(context.TODO(), "abc")
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// fmt.Printf("%s\n", resp.Kvs[0].Value)
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// // Output: 456
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//
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package namespace
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