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// Copyright 2016 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 clientv3_test
import (
"context"
"fmt"
"log"
"go.etcd.io/etcd/client/v3"
)
func mockAuth() {
fmt.Println(`etcdserver: permission denied`)
fmt.Println(`user u permission: key "foo", range end "zoo"`)
}
func ExampleAuth() {
forUnitTestsRunInMockedContext(
mockAuth,
func() {
cli, err := clientv3.New(clientv3.Config{
Endpoints: exampleEndpoints(),
DialTimeout: dialTimeout,
})
if err != nil {
log.Fatal(err)
}
defer cli.Close()
if _, err = cli.RoleAdd(context.TODO(), "root"); err != nil {
log.Fatal(err)
}
if _, err = cli.UserAdd(context.TODO(), "root", "123"); err != nil {
log.Fatal(err)
}
if _, err = cli.UserGrantRole(context.TODO(), "root", "root"); err != nil {
log.Fatal(err)
}
if _, err = cli.RoleAdd(context.TODO(), "r"); err != nil {
log.Fatal(err)
}
if _, err = cli.RoleGrantPermission(
context.TODO(),
"r", // role name
"foo", // key
"zoo", // range end
clientv3.PermissionType(clientv3.PermReadWrite),
); err != nil {
log.Fatal(err)
}
if _, err = cli.UserAdd(context.TODO(), "u", "123"); err != nil {
log.Fatal(err)
}
if _, err = cli.UserGrantRole(context.TODO(), "u", "r"); err != nil {
log.Fatal(err)
}
if _, err = cli.AuthEnable(context.TODO()); err != nil {
log.Fatal(err)
}
cliAuth, err := clientv3.New(clientv3.Config{
Endpoints: exampleEndpoints(),
DialTimeout: dialTimeout,
Username: "u",
Password: "123",
})
if err != nil {
log.Fatal(err)
}
defer cliAuth.Close()
if _, err = cliAuth.Put(context.TODO(), "foo1", "bar"); err != nil {
log.Fatal(err)
}
_, err = cliAuth.Txn(context.TODO()).
If(clientv3.Compare(clientv3.Value("zoo1"), ">", "abc")).
Then(clientv3.OpPut("zoo1", "XYZ")).
Else(clientv3.OpPut("zoo1", "ABC")).
Commit()
fmt.Println(err)
// now check the permission with the root account
rootCli, err := clientv3.New(clientv3.Config{
Endpoints: exampleEndpoints(),
DialTimeout: dialTimeout,
Username: "root",
Password: "123",
})
if err != nil {
log.Fatal(err)
}
defer rootCli.Close()
resp, err := rootCli.RoleGet(context.TODO(), "r")
if err != nil {
log.Fatal(err)
}
fmt.Printf("user u permission: key %q, range end %q\n", resp.Perm[0].Key, resp.Perm[0].RangeEnd)
if _, err = rootCli.AuthDisable(context.TODO()); err != nil {
log.Fatal(err)
}
})
// Output: etcdserver: permission denied
// user u permission: key "foo", range end "zoo"
}
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