mirror of
https://github.com/etcd-io/etcd.git
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76 lines
2.4 KiB
Go
76 lines
2.4 KiB
Go
// Copyright 2015 CoreOS, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package command
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import (
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"errors"
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"os"
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"time"
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"github.com/codegangsta/cli"
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"github.com/coreos/etcd/client"
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)
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// NewMakeCommand returns the CLI command for "mk".
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func NewMakeCommand() cli.Command {
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return cli.Command{
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Name: "mk",
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Usage: "make a new key with a given value",
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ArgsUsage: "<key> <value>",
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Flags: []cli.Flag{
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cli.BoolFlag{Name: "in-order", Usage: "create in-order key under directory <key>"},
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cli.IntFlag{Name: "ttl", Value: 0, Usage: "key time-to-live"},
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},
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Action: func(c *cli.Context) {
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mkCommandFunc(c, mustNewKeyAPI(c))
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},
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}
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}
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// mkCommandFunc executes the "mk" command.
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func mkCommandFunc(c *cli.Context, ki client.KeysAPI) {
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if len(c.Args()) == 0 {
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handleError(ExitBadArgs, errors.New("key required"))
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}
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key := c.Args()[0]
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value, err := argOrStdin(c.Args(), os.Stdin, 1)
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if err != nil {
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handleError(ExitBadArgs, errors.New("value required"))
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}
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ttl := c.Int("ttl")
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inorder := c.Bool("in-order")
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var resp *client.Response
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ctx, cancel := contextWithTotalTimeout(c)
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if !inorder {
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// Since PrevNoExist means that the Node must not exist previously,
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// this Set method always creates a new key. Therefore, mk command
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// succeeds only if the key did not previously exist, and the command
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// prevents one from overwriting values accidentally.
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resp, err = ki.Set(ctx, key, value, &client.SetOptions{TTL: time.Duration(ttl) * time.Second, PrevExist: client.PrevNoExist})
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} else {
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// If in-order flag is specified then create an inorder key under
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// the directory identified by the key argument.
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resp, err = ki.CreateInOrder(ctx, key, value, &client.CreateInOrderOptions{TTL: time.Duration(ttl) * time.Second})
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}
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cancel()
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if err != nil {
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handleError(ExitServerError, err)
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}
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printResponseKey(resp, c.GlobalString("output"))
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}
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