andri.dk
[READ-ONLY] Mirror of https://github.com/andrioid/statesman. xstate inspired schema compatible statechart library for Go
fsm
go
statecharts
1package statesman
2
3import (
4 "context"
5 "errors"
6 "net"
7 "os"
8)
9
10// IsTransient reports whether err is a retryable transport-level failure: a
11// context or I/O deadline (context.DeadlineExceeded, os.ErrDeadlineExceeded) or a
12// net.Error reporting a timeout. It unwraps via errors.Is / errors.As.
13//
14// It deliberately does NOT classify domain errors (HTTP 4xx/5xx, application
15// failures) or context.Canceled — a cancel is an intentional stop, never a retry.
16// Compose your own predicate around it for domain errors: an error.invoke.<id>
17// guard is where to decide whether a failure is worth spending a retry on.
18func IsTransient(err error) bool {
19 if err == nil {
20 return false
21 }
22 if errors.Is(err, context.DeadlineExceeded) || errors.Is(err, os.ErrDeadlineExceeded) {
23 return true
24 }
25 var ne net.Error
26 if errors.As(err, &ne) {
27 return ne.Timeout()
28 }
29 return false
30}