forked from IBM/sarama
-
Notifications
You must be signed in to change notification settings - Fork 1
/
utils.go
87 lines (68 loc) · 1.96 KB
/
utils.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
package sarama
import "sort"
type none struct{}
// make []int32 sortable so we can sort partition numbers
type int32Slice []int32
func (slice int32Slice) Len() int {
return len(slice)
}
func (slice int32Slice) Less(i, j int) bool {
return slice[i] < slice[j]
}
func (slice int32Slice) Swap(i, j int) {
slice[i], slice[j] = slice[j], slice[i]
}
func dupeAndSort(input []int32) []int32 {
ret := make([]int32, 0, len(input))
for _, val := range input {
ret = append(ret, val)
}
sort.Sort(int32Slice(ret))
return ret
}
func withRecover(fn func()) {
defer func() {
handler := PanicHandler
if handler != nil {
if err := recover(); err != nil {
handler(err)
}
}
}()
fn()
}
func safeAsyncClose(b *Broker) {
tmp := b // local var prevents clobbering in goroutine
go withRecover(func() {
if err := tmp.Close(); err != nil {
Logger.Println("Error closing broker", tmp.ID(), ":", err)
}
})
}
// Encoder is a simple interface for any type that can be encoded as an array of bytes
// in order to be sent as the key or value of a Kafka message. Length() is provided as an
// optimization, and must return the same as len() on the result of Encode().
type Encoder interface {
Encode() ([]byte, error)
Length() int
}
// make strings and byte slices encodable for convenience so they can be used as keys
// and/or values in kafka messages
// StringEncoder implements the Encoder interface for Go strings so that you can do things like
// producer.SendMessage(nil, sarama.StringEncoder("hello world"))
type StringEncoder string
func (s StringEncoder) Encode() ([]byte, error) {
return []byte(s), nil
}
func (s StringEncoder) Length() int {
return len(s)
}
// ByteEncoder implements the Encoder interface for Go byte slices so that you can do things like
// producer.SendMessage(nil, sarama.ByteEncoder([]byte{0x00}))
type ByteEncoder []byte
func (b ByteEncoder) Encode() ([]byte, error) {
return b, nil
}
func (b ByteEncoder) Length() int {
return len(b)
}