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// 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 command
import (
"errors"
"os"
"time"
"github.com/urfave/cli"
"go.etcd.io/etcd/client/v2"
"go.etcd.io/etcd/pkg/v3/cobrautl"
)
// NewUpdateCommand returns the CLI command for "update".
func NewUpdateCommand() cli.Command {
return cli.Command{
Name: "update",
Usage: "update an existing key with a given value",
ArgsUsage: "<key> <value>",
Flags: []cli.Flag{
cli.IntFlag{Name: "ttl", Value: 0, Usage: "key time-to-live in seconds"},
},
Action: func(c *cli.Context) error {
updateCommandFunc(c, mustNewKeyAPI(c))
return nil
},
}
}
// updateCommandFunc executes the "update" command.
func updateCommandFunc(c *cli.Context, ki client.KeysAPI) {
if len(c.Args()) == 0 {
handleError(c, cobrautl.ExitBadArgs, errors.New("key required"))
}
key := c.Args()[0]
value, err := argOrStdin(c.Args(), os.Stdin, 1)
if err != nil {
handleError(c, cobrautl.ExitBadArgs, errors.New("value required"))
}
ttl := c.Int("ttl")
ctx, cancel := contextWithTotalTimeout(c)
resp, err := ki.Set(ctx, key, value, &client.SetOptions{TTL: time.Duration(ttl) * time.Second, PrevExist: client.PrevExist})
cancel()
if err != nil {
handleError(c, cobrautl.ExitServerError, err)
}
printResponseKey(resp, c.GlobalString("output"))
}
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