1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
|
// -*- Mode: Go; indent-tabs-mode: t -*-
/*
* Copyright (C) 2025 Canonical Ltd
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 3 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
package main
import (
"encoding/json"
"strings"
"github.com/jessevdk/go-flags"
)
type cmdDebugFeatures struct {
clientMixin
p *flags.Parser
}
func init() {
addDebugCommand("features",
"Obtain the complete list of feature tags",
`Display json output that contains the complete list of
feature tags present in snapd and snap. Feature tags are
a collection of data that describe significant code paths
within snapd including tasks, changes, interfaces,
endpoints, snap commands, and ensure helper functions.`,
func() flags.Commander { return &cmdDebugFeatures{} },
nil,
nil,
)
}
func (x *cmdDebugFeatures) setParser(p *flags.Parser) {
x.p = p
}
func (x *cmdDebugFeatures) Execute(args []string) error {
x.setClient(mkClient())
var err error
var rsp map[string]any
err = x.client.DebugGet("features", &rsp, nil)
if err != nil {
return err
}
rsp["commands"] = getCommandNames(x.p)
enc := json.NewEncoder(Stdout)
if err := enc.Encode(rsp); err != nil {
return err
}
return nil
}
func getCommandNames(parser *flags.Parser) []string {
commands := parser.Command.Commands()
names := []string{}
for _, cmd := range commands {
subcommands := cmd.Commands()
if len(subcommands) == 0 {
names = append(names, cmd.Name)
} else {
names = append(names, getSubCommandNames(subcommands, []string{cmd.Name})...)
}
}
return names
}
func getSubCommandNames(commands []*flags.Command, names []string) []string {
composedNames := []string{}
for _, cmd := range commands {
subcommands := cmd.Commands()
if len(subcommands) == 0 {
composedNames = append(composedNames, strings.Join(append(names, cmd.Name), " "))
} else {
composedNames = append(composedNames, getSubCommandNames(subcommands, append(names, cmd.Name))...)
}
}
return composedNames
}
|
