mirror of
https://github.com/etcd-io/etcd.git
synced 2024-09-27 06:25:44 +00:00
90 lines
2.5 KiB
Go
90 lines
2.5 KiB
Go
// 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 (
|
|
"fmt"
|
|
|
|
"github.com/coreos/etcd/clientv3"
|
|
"github.com/spf13/cobra"
|
|
)
|
|
|
|
var (
|
|
delPrefix bool
|
|
delPrevKV bool
|
|
delFromKey bool
|
|
)
|
|
|
|
// NewDelCommand returns the cobra command for "del".
|
|
func NewDelCommand() *cobra.Command {
|
|
cmd := &cobra.Command{
|
|
Use: "del [options] <key> [range_end]",
|
|
Short: "Removes the specified key or range of keys [key, range_end)",
|
|
Run: delCommandFunc,
|
|
}
|
|
|
|
cmd.Flags().BoolVar(&delPrefix, "prefix", false, "delete keys with matching prefix")
|
|
cmd.Flags().BoolVar(&delPrevKV, "prev-kv", false, "return deleted key-value pairs")
|
|
cmd.Flags().BoolVar(&delFromKey, "from-key", false, "delete keys that are greater than or equal to the given key using byte compare")
|
|
return cmd
|
|
}
|
|
|
|
// delCommandFunc executes the "del" command.
|
|
func delCommandFunc(cmd *cobra.Command, args []string) {
|
|
key, opts := getDelOp(cmd, args)
|
|
ctx, cancel := commandCtx(cmd)
|
|
resp, err := mustClientFromCmd(cmd).Delete(ctx, key, opts...)
|
|
cancel()
|
|
if err != nil {
|
|
ExitWithError(ExitError, err)
|
|
}
|
|
display.Del(*resp)
|
|
}
|
|
|
|
func getDelOp(cmd *cobra.Command, args []string) (string, []clientv3.OpOption) {
|
|
if len(args) == 0 || len(args) > 2 {
|
|
ExitWithError(ExitBadArgs, fmt.Errorf("del command needs one argument as key and an optional argument as range_end."))
|
|
}
|
|
|
|
if delPrefix && delFromKey {
|
|
ExitWithError(ExitBadArgs, fmt.Errorf("`--prefix` and `--from-key` cannot be set at the same time, choose one."))
|
|
}
|
|
|
|
opts := []clientv3.OpOption{}
|
|
key := args[0]
|
|
if len(args) > 1 {
|
|
if delPrefix || delFromKey {
|
|
ExitWithError(ExitBadArgs, fmt.Errorf("too many arguments, only accept one argument when `--prefix` or `--from-key` is set."))
|
|
}
|
|
opts = append(opts, clientv3.WithRange(args[1]))
|
|
}
|
|
|
|
if delPrefix {
|
|
opts = append(opts, clientv3.WithPrefix())
|
|
}
|
|
if delPrevKV {
|
|
opts = append(opts, clientv3.WithPrevKV())
|
|
}
|
|
|
|
if delFromKey {
|
|
if len(key) == 0 {
|
|
key = "\x00"
|
|
}
|
|
opts = append(opts, clientv3.WithFromKey())
|
|
}
|
|
|
|
return key, opts
|
|
}
|