lotus/lib/retry/retry.go
2022-08-18 15:57:59 -04:00

37 lines
744 B
Go

package retry
import (
"errors"
"time"
logging "github.com/ipfs/go-log/v2"
)
var log = logging.Logger("retry")
func errorIsIn(err error, errorTypes []error) bool {
for _, etype := range errorTypes {
tmp := etype
if errors.As(err, &tmp) {
return true
}
}
return false
}
func Retry[T any](attempts int, sleep int, errorTypes []error, f func() (T, error)) (result T, err error) {
for i := 0; i < attempts; i++ {
if i > 0 {
log.Info("Retrying after error:", err)
time.Sleep(time.Duration(sleep) * time.Second)
sleep *= 2
}
result, err = f()
if err == nil || !errorIsIn(err, errorTypes) {
return result, nil
}
}
log.Errorf("Failed after %d attempts, last error: %s", attempts, err)
return result, err
}