-
Notifications
You must be signed in to change notification settings - Fork 0
/
async_options.go
93 lines (82 loc) · 2.21 KB
/
async_options.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
package zapappender
import (
"errors"
"time"
)
type AsyncOption interface {
apply(*Async) error
}
type asyncOptionsFunc func(*Async) error
func (f asyncOptionsFunc) apply(a *Async) error {
return f(a)
}
func AsyncMaxQueueLength(length int) AsyncOption {
return asyncOptionsFunc(func(a *Async) error {
if length < 0 {
return errors.New("length must be greater than 0")
}
a.maxQueueLength = length
return nil
})
}
// AsyncOnQueueNearlyFullForwardTo
// fallback is wrapped in a Synchronizing appender
func AsyncOnQueueNearlyFullForwardTo(fallback Appender) AsyncOption {
return asyncOptionsFunc(func(async *Async) error {
if fallback == nil {
return errors.New("fallback must not be nil")
}
async.fallback = NewSynchronizing(fallback)
return nil
})
}
func AsyncOnQueueNearlyFullDropMessages() AsyncOption {
return asyncOptionsFunc(func(async *Async) error {
async.fallback = NewDiscard()
return nil
})
}
func AsyncQueueMinFreePercent(minFreePercent float32) AsyncOption {
return asyncOptionsFunc(func(async *Async) error {
if minFreePercent < 0 || minFreePercent >= 1 {
return errors.New("minFreePercent must be between 0 and 1")
}
async.calculateDropThresholdFn = func(a *Async) (int, error) {
threshold := float32(async.maxQueueLength) * minFreePercent
return int(threshold), nil
}
return nil
})
}
func AsyncQueueMinFreeItems(minFree int) AsyncOption {
return asyncOptionsFunc(func(async *Async) error {
async.calculateDropThresholdFn = func(a *Async) (int, error) {
if minFree < 0 {
return 0, errors.New("minFree must be gt 0")
}
if a.maxQueueLength < minFree {
return 0, errors.New("minFree must less than the max queue size")
}
return minFree, nil
}
return nil
})
}
func AsyncQueueMonitorPeriod(period time.Duration) AsyncOption {
return asyncOptionsFunc(func(async *Async) error {
if period <= time.Duration(0) {
return errors.New("period must be positive")
}
async.monitorPeriod = period
return nil
})
}
func AsyncSyncTimeout(timeout time.Duration) AsyncOption {
return asyncOptionsFunc(func(async *Async) error {
if timeout <= time.Duration(0) {
return errors.New("timeout must be positive")
}
async.syncTimeout = timeout
return nil
})
}