mirror of https://github.com/k3s-io/k3s
74 lines
1.8 KiB
Go
74 lines
1.8 KiB
Go
// Copyright 2015 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 client provides bindings for the etcd APIs.
|
|
|
|
Create a Config and exchange it for a Client:
|
|
|
|
import (
|
|
"net/http"
|
|
"context"
|
|
|
|
"go.etcd.io/etcd/client/v2"
|
|
)
|
|
|
|
cfg := client.Config{
|
|
Endpoints: []string{"http://127.0.0.1:2379"},
|
|
Transport: DefaultTransport,
|
|
}
|
|
|
|
c, err := client.New(cfg)
|
|
if err != nil {
|
|
// handle error
|
|
}
|
|
|
|
Clients are safe for concurrent use by multiple goroutines.
|
|
|
|
Create a KeysAPI using the Client, then use it to interact with etcd:
|
|
|
|
kAPI := client.NewKeysAPI(c)
|
|
|
|
// create a new key /foo with the value "bar"
|
|
_, err = kAPI.Create(context.Background(), "/foo", "bar")
|
|
if err != nil {
|
|
// handle error
|
|
}
|
|
|
|
// delete the newly created key only if the value is still "bar"
|
|
_, err = kAPI.Delete(context.Background(), "/foo", &DeleteOptions{PrevValue: "bar"})
|
|
if err != nil {
|
|
// handle error
|
|
}
|
|
|
|
Use a custom context to set timeouts on your operations:
|
|
|
|
import "time"
|
|
|
|
ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
|
|
defer cancel()
|
|
|
|
// set a new key, ignoring its previous state
|
|
_, err := kAPI.Set(ctx, "/ping", "pong", nil)
|
|
if err != nil {
|
|
if err == context.DeadlineExceeded {
|
|
// request took longer than 5s
|
|
} else {
|
|
// handle error
|
|
}
|
|
}
|
|
|
|
*/
|
|
package client
|