forked from vmware-archive/atc
-
Notifications
You must be signed in to change notification settings - Fork 0
/
runner.go
70 lines (55 loc) · 1.31 KB
/
runner.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
package lockrunner
import (
"os"
"time"
"code.cloudfoundry.org/clock"
"code.cloudfoundry.org/lager"
"github.com/concourse/atc/db"
"github.com/tedsuo/ifrit"
)
//go:generate counterfeiter . RunnerDB
type RunnerDB interface {
GetTaskLock(logger lager.Logger, lockName string) (db.Lock, bool, error)
}
//go:generate counterfeiter . Task
type Task interface {
Run() error
}
func NewRunner(
logger lager.Logger,
task Task,
taskName string,
db RunnerDB,
clock clock.Clock,
interval time.Duration,
) ifrit.Runner {
return ifrit.RunFunc(func(signals <-chan os.Signal, ready chan<- struct{}) error {
close(ready)
ticker := clock.NewTicker(interval)
defer ticker.Stop()
for {
select {
case <-ticker.C():
lockLogger := logger.Session("lock-task", lager.Data{"task-name": taskName})
lockLogger.Info("tick")
lock, acquired, err := db.GetTaskLock(lockLogger, taskName)
if err != nil {
lockLogger.Error("failed-to-get-lock", err)
break
}
if !acquired {
lockLogger.Debug("did-not-get-lock")
break
}
lockLogger.Info("run-task", lager.Data{"task-name": taskName})
err = task.Run()
if err != nil {
lockLogger.Error("failed-to-run-task", err, lager.Data{"task-name": taskName})
}
lock.Release()
case <-signals:
return nil
}
}
})
}