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update_command.go
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/
update_command.go
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package command
import (
"errors"
"os"
"github.com/coreos/etcd/Godeps/_workspace/src/github.com/codegangsta/cli"
"github.com/coreos/etcd/Godeps/_workspace/src/github.com/coreos/go-etcd/etcd"
)
// 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",
Flags: []cli.Flag{
cli.IntFlag{Name: "ttl", Value: 0, Usage: "key time-to-live"},
},
Action: func(c *cli.Context) {
handleKey(c, updateCommandFunc)
},
}
}
// updateCommandFunc executes the "update" command.
func updateCommandFunc(c *cli.Context, client *etcd.Client) (*etcd.Response, error) {
if len(c.Args()) == 0 {
return nil, errors.New("Key required")
}
key := c.Args()[0]
value, err := argOrStdin(c.Args(), os.Stdin, 1)
if err != nil {
return nil, errors.New("Value required")
}
ttl := c.Int("ttl")
return client.Update(key, value, uint64(ttl))
}