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
|
// Copyright (c) 2016-present Mattermost, Inc. All Rights Reserved.
// See License.txt for license information.
package model
import (
"fmt"
"time"
)
type TaskFunc func()
type ScheduledTask struct {
Name string `json:"name"`
Interval time.Duration `json:"interval"`
Recurring bool `json:"recurring"`
function func()
cancel chan struct{}
cancelled chan struct{}
}
func CreateTask(name string, function TaskFunc, timeToExecution time.Duration) *ScheduledTask {
return createTask(name, function, timeToExecution, false)
}
func CreateRecurringTask(name string, function TaskFunc, interval time.Duration) *ScheduledTask {
return createTask(name, function, interval, true)
}
func createTask(name string, function TaskFunc, interval time.Duration, recurring bool) *ScheduledTask {
task := &ScheduledTask{
Name: name,
Interval: interval,
Recurring: recurring,
function: function,
cancel: make(chan struct{}),
cancelled: make(chan struct{}),
}
go func() {
defer close(task.cancelled)
ticker := time.NewTicker(interval)
defer func() {
ticker.Stop()
}()
for {
select {
case <-ticker.C:
function()
case <-task.cancel:
return
}
if !task.Recurring {
break
}
}
}()
return task
}
func (task *ScheduledTask) Cancel() {
close(task.cancel)
<-task.cancelled
}
func (task *ScheduledTask) String() string {
return fmt.Sprintf(
"%s\nInterval: %s\nRecurring: %t\n",
task.Name,
task.Interval.String(),
task.Recurring,
)
}
|
