/
sequence.go
91 lines (74 loc) · 2.45 KB
/
sequence.go
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
// Copyright (C) 2020, IrineSistiana
//
// This file is part of mosdns.
//
// mosdns is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// mosdns 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 <https://www.gnu.org/licenses/>.
package sequence
import (
"context"
"errors"
"github.com/IrineSistiana/mosdns/dispatcher/handler"
"github.com/IrineSistiana/mosdns/dispatcher/mlog"
"github.com/sirupsen/logrus"
)
const PluginType = "sequence"
func init() {
handler.RegInitFunc(PluginType, Init)
handler.MustRegPlugin(&sequenceRouter{tag: "_end"})
}
var _ handler.ExecutablePlugin = (*sequenceRouter)(nil)
type sequenceRouter struct {
tag string
executableCmd *handler.ExecutableCmdSequence
next string
logger *logrus.Entry
}
type Args struct {
Exec []interface{} `yaml:"exec"`
Next string `yaml:"next"`
}
func Init(tag string, argsMap map[string]interface{}) (p handler.Plugin, err error) {
args := new(Args)
err = handler.WeakDecode(argsMap, args)
if err != nil {
return nil, handler.NewErrFromTemplate(handler.ETInvalidArgs, err)
}
if len(args.Exec) == 0 {
return nil, errors.New("empty exec sequence")
}
ecs := handler.NewExecutableCmdSequence()
if err := ecs.Parse(args.Exec); err != nil {
return nil, handler.NewErrFromTemplate(handler.ETInvalidArgs, err)
}
s := newSequencePlugin(tag, ecs, args.Next)
return s, nil
}
func newSequencePlugin(tag string, executable *handler.ExecutableCmdSequence, next string) *sequenceRouter {
return &sequenceRouter{tag: tag, executableCmd: executable, next: next, logger: mlog.NewPluginLogger(tag)}
}
func (s *sequenceRouter) Tag() string {
return s.tag
}
func (s *sequenceRouter) Type() string {
return PluginType
}
func (s *sequenceRouter) Exec(ctx context.Context, qCtx *handler.Context) (err error) {
if s.executableCmd != nil {
err = s.executableCmd.Exec(ctx, qCtx, s.logger)
if err != nil {
return handler.NewPluginError(s.tag, err)
}
}
return nil
}