go.etcd.io/etcd@v3.3.27+incompatible/client/example_keys_test.go (about) 1 // Copyright 2017 The etcd Authors 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 package client_test 16 17 import ( 18 "context" 19 "fmt" 20 "log" 21 "sort" 22 23 "github.com/coreos/etcd/client" 24 ) 25 26 func ExampleKeysAPI_directory() { 27 c, err := client.New(client.Config{ 28 Endpoints: exampleEndpoints, 29 Transport: exampleTransport, 30 }) 31 if err != nil { 32 log.Fatal(err) 33 } 34 kapi := client.NewKeysAPI(c) 35 36 // Setting '/myNodes' to create a directory that will hold some keys. 37 o := client.SetOptions{Dir: true} 38 resp, err := kapi.Set(context.Background(), "/myNodes", "", &o) 39 if err != nil { 40 log.Fatal(err) 41 } 42 43 // Add keys to /myNodes directory. 44 resp, err = kapi.Set(context.Background(), "/myNodes/key1", "value1", nil) 45 if err != nil { 46 log.Fatal(err) 47 } 48 resp, err = kapi.Set(context.Background(), "/myNodes/key2", "value2", nil) 49 if err != nil { 50 log.Fatal(err) 51 } 52 53 // fetch directory 54 resp, err = kapi.Get(context.Background(), "/myNodes", nil) 55 if err != nil { 56 log.Fatal(err) 57 } 58 // print directory keys 59 sort.Sort(resp.Node.Nodes) 60 for _, n := range resp.Node.Nodes { 61 fmt.Printf("Key: %q, Value: %q\n", n.Key, n.Value) 62 } 63 64 // Output: 65 // Key: "/myNodes/key1", Value: "value1" 66 // Key: "/myNodes/key2", Value: "value2" 67 } 68 69 func ExampleKeysAPI_setget() { 70 c, err := client.New(client.Config{ 71 Endpoints: exampleEndpoints, 72 Transport: exampleTransport, 73 }) 74 if err != nil { 75 log.Fatal(err) 76 } 77 kapi := client.NewKeysAPI(c) 78 79 // Set key "/foo" to value "bar". 80 resp, err := kapi.Set(context.Background(), "/foo", "bar", nil) 81 if err != nil { 82 log.Fatal(err) 83 } 84 // Get key "/foo" 85 resp, err = kapi.Get(context.Background(), "/foo", nil) 86 if err != nil { 87 log.Fatal(err) 88 } 89 90 fmt.Printf("%q key has %q value\n", resp.Node.Key, resp.Node.Value) 91 92 // Output: "/foo" key has "bar" value 93 }