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
|
package internal
import (
"io"
"net"
"strings"
)
const Nil = RedisError("redis: nil")
type RedisError string
func (e RedisError) Error() string { return string(e) }
func IsRetryableError(err error, retryNetError bool) bool {
if IsNetworkError(err) {
return retryNetError
}
s := err.Error()
if s == "ERR max number of clients reached" {
return true
}
if strings.HasPrefix(s, "LOADING ") {
return true
}
if strings.HasPrefix(s, "CLUSTERDOWN ") {
return true
}
return false
}
func IsRedisError(err error) bool {
_, ok := err.(RedisError)
return ok
}
func IsNetworkError(err error) bool {
if err == io.EOF {
return true
}
_, ok := err.(net.Error)
return ok
}
func IsBadConn(err error, allowTimeout bool) bool {
if err == nil {
return false
}
if IsRedisError(err) {
return false
}
if allowTimeout {
if netErr, ok := err.(net.Error); ok && netErr.Timeout() {
return false
}
}
return true
}
func IsMovedError(err error) (moved bool, ask bool, addr string) {
if !IsRedisError(err) {
return
}
s := err.Error()
if strings.HasPrefix(s, "MOVED ") {
moved = true
} else if strings.HasPrefix(s, "ASK ") {
ask = true
} else {
return
}
ind := strings.LastIndex(s, " ")
if ind == -1 {
return false, false, ""
}
addr = s[ind+1:]
return
}
func IsLoadingError(err error) bool {
return strings.HasPrefix(err.Error(), "LOADING ")
}
|