-
Notifications
You must be signed in to change notification settings - Fork 171
/
watcher-interval.go
120 lines (106 loc) · 2.73 KB
/
watcher-interval.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
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
/*
* Copyright (c) 2019-2022. Abstrium SAS <team (at) pydio.com>
* This file is part of Pydio Cells.
*
* Pydio Cells is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Pydio Cells 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with Pydio Cells. If not, see <http://www.gnu.org/licenses/>.
*
* The latest code can be found at <https://pydio.com>.
*/
package util
import (
"fmt"
"time"
pb "github.com/pydio/cells/v4/common/proto/registry"
"github.com/pydio/cells/v4/common/registry"
json "github.com/pydio/cells/v4/common/utils/jsonx"
)
func NewIntervalStatusWatcher(item registry.Item, interval time.Duration, callback func() (registry.Item, bool)) registry.StatusWatcher {
s := &statusWatcher{
item: item,
exit: make(chan bool),
ticker: time.NewTicker(interval),
callback: callback,
}
return s
}
type statusWatcher struct {
item registry.Item
ticker *time.Ticker
exit chan bool
callback func() (registry.Item, bool)
}
func (s *statusWatcher) Next() (registry.Item, error) {
for {
select {
case <-s.ticker.C:
item, changed := s.callback()
if !changed {
continue
}
return item, nil
case <-s.exit:
return nil, fmt.Errorf("watcher stopped")
}
}
}
func (s *statusWatcher) Stop() {
defer s.ticker.Stop()
select {
case <-s.exit:
return
default:
close(s.exit)
}
}
func NewIntervalStatsWatcher(item registry.Item, interval time.Duration, callback func() map[string]interface{}) registry.StatusWatcher {
s := &statsWatcher{
item: item,
exit: make(chan bool),
ticker: time.NewTicker(interval),
callback: callback,
}
return s
}
type statsWatcher struct {
item registry.Item
ticker *time.Ticker
exit chan bool
callback func() map[string]interface{}
}
func (s *statsWatcher) Next() (registry.Item, error) {
for {
select {
case <-s.ticker.C:
ss := s.callback()
js, _ := json.Marshal(ss)
gen := &pb.Item{
Id: s.item.ID() + "-stats",
Name: "stats",
Metadata: map[string]string{"Data": string(js)},
}
return ToGeneric(gen, &pb.Generic{Type: pb.ItemType_STATS}), nil
case <-s.exit:
return nil, fmt.Errorf("watcher stopped")
}
}
}
func (s *statsWatcher) Stop() {
defer s.ticker.Stop()
select {
case <-s.exit:
return
default:
close(s.exit)
}
}