| // 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" |
| ) |
| |
| // NewMakeCommand returns the CLI command for "mk". |
| func NewMakeCommand() cli.Command { |
| return cli.Command{ |
| Name: "mk", |
| Usage: "make a new key with a given value", |
| ArgsUsage: "<key> <value>", |
| Flags: []cli.Flag{ |
| cli.BoolFlag{Name: "in-order", Usage: "create in-order key under directory <key>"}, |
| cli.IntFlag{Name: "ttl", Value: 0, Usage: "key time-to-live in seconds"}, |
| }, |
| Action: func(c *cli.Context) error { |
| mkCommandFunc(c, mustNewKeyAPI(c)) |
| return nil |
| }, |
| } |
| } |
| |
| // mkCommandFunc executes the "mk" command. |
| func mkCommandFunc(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") |
| inorder := c.Bool("in-order") |
| |
| var resp *client.Response |
| ctx, cancel := contextWithTotalTimeout(c) |
| if !inorder { |
| // Since PrevNoExist means that the Node must not exist previously, |
| // this Set method always creates a new key. Therefore, mk command |
| // succeeds only if the key did not previously exist, and the command |
| // prevents one from overwriting values accidentally. |
| resp, err = ki.Set(ctx, key, value, &client.SetOptions{TTL: time.Duration(ttl) * time.Second, PrevExist: client.PrevNoExist}) |
| } else { |
| // If in-order flag is specified then create an inorder key under |
| // the directory identified by the key argument. |
| resp, err = ki.CreateInOrder(ctx, key, value, &client.CreateInOrderOptions{TTL: time.Duration(ttl) * time.Second}) |
| } |
| cancel() |
| if err != nil { |
| handleError(c, ExitServerError, err) |
| } |
| |
| printResponseKey(resp, c.GlobalString("output")) |
| } |