| // 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/client" |
| "github.com/urfave/cli" |
| ) |
| |
| func NewLsCommand() cli.Command { |
| return cli.Command{ |
| Name: "ls", |
| Usage: "retrieve a directory", |
| ArgsUsage: "[key]", |
| Flags: []cli.Flag{ |
| cli.BoolFlag{Name: "sort", Usage: "returns result in sorted order"}, |
| cli.BoolFlag{Name: "recursive, r", Usage: "returns all key names recursively for the given path"}, |
| cli.BoolFlag{Name: "p", Usage: "append slash (/) to directories"}, |
| cli.BoolFlag{Name: "quorum, q", Usage: "require quorum for get request"}, |
| }, |
| Action: func(c *cli.Context) error { |
| lsCommandFunc(c, mustNewKeyAPI(c)) |
| return nil |
| }, |
| } |
| } |
| |
| // lsCommandFunc executes the "ls" command. |
| func lsCommandFunc(c *cli.Context, ki client.KeysAPI) { |
| key := "/" |
| if len(c.Args()) != 0 { |
| key = c.Args()[0] |
| } |
| |
| sort := c.Bool("sort") |
| recursive := c.Bool("recursive") |
| quorum := c.Bool("quorum") |
| |
| ctx, cancel := contextWithTotalTimeout(c) |
| resp, err := ki.Get(ctx, key, &client.GetOptions{Sort: sort, Recursive: recursive, Quorum: quorum}) |
| cancel() |
| if err != nil { |
| handleError(c, ExitServerError, err) |
| } |
| |
| printLs(c, resp) |
| } |
| |
| // printLs writes a response out in a manner similar to the `ls` command in unix. |
| // Non-empty directories list their contents and files list their name. |
| func printLs(c *cli.Context, resp *client.Response) { |
| if c.GlobalString("output") == "simple" { |
| if !resp.Node.Dir { |
| fmt.Println(resp.Node.Key) |
| } |
| for _, node := range resp.Node.Nodes { |
| rPrint(c, node) |
| } |
| } else { |
| // user wants JSON or extended output |
| printResponseKey(resp, c.GlobalString("output")) |
| } |
| } |
| |
| // rPrint recursively prints out the nodes in the node structure. |
| func rPrint(c *cli.Context, n *client.Node) { |
| if n.Dir && c.Bool("p") { |
| fmt.Println(fmt.Sprintf("%v/", n.Key)) |
| } else { |
| fmt.Println(n.Key) |
| } |
| |
| for _, node := range n.Nodes { |
| rPrint(c, node) |
| } |
| } |