| // 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/coreos/etcd/client" |
| "github.com/urfave/cli" |
| ) |
| |
| // NewSetCommand returns the CLI command for "set". |
| func NewSetCommand() cli.Command { |
| return cli.Command{ |
| Name: "set", |
| Usage: "set the value of a key", |
| ArgsUsage: "<key> <value>", |
| Description: `Set sets the value of a key. |
| |
| When <value> begins with '-', <value> is interpreted as a flag. |
| Insert '--' for workaround: |
| |
| $ set -- <key> <value>`, |
| Flags: []cli.Flag{ |
| cli.IntFlag{Name: "ttl", Value: 0, Usage: "key time-to-live in seconds"}, |
| cli.StringFlag{Name: "swap-with-value", Value: "", Usage: "previous value"}, |
| cli.IntFlag{Name: "swap-with-index", Value: 0, Usage: "previous index"}, |
| }, |
| Action: func(c *cli.Context) error { |
| setCommandFunc(c, mustNewKeyAPI(c)) |
| return nil |
| }, |
| } |
| } |
| |
| // setCommandFunc executes the "set" command. |
| func setCommandFunc(c *cli.Context, ki client.KeysAPI) { |
| if len(c.Args()) == 0 { |
| handleError(c, ExitBadArgs, errors.New("key required")) |
| } |
| key := c.Args()[0] |
| value, err := argOrStdin(c.Args(), os.Stdin, 1) |
| if err != nil { |
| handleError(c, ExitBadArgs, errors.New("value required")) |
| } |
| |
| ttl := c.Int("ttl") |
| prevValue := c.String("swap-with-value") |
| prevIndex := c.Int("swap-with-index") |
| |
| ctx, cancel := contextWithTotalTimeout(c) |
| resp, err := ki.Set(ctx, key, value, &client.SetOptions{TTL: time.Duration(ttl) * time.Second, PrevIndex: uint64(prevIndex), PrevValue: prevValue}) |
| cancel() |
| if err != nil { |
| handleError(c, ExitServerError, err) |
| } |
| |
| printResponseKey(resp, c.GlobalString("output")) |
| } |