lotus/lib/retry/retry.go
2022-09-22 13:58:07 -04:00

28 lines
617 B
Go

package retry
import (
"time"
logging "github.com/ipfs/go-log/v2"
"github.com/filecoin-project/lotus/api"
)
var log = logging.Logger("retry")
func Retry[T any](attempts int, initialBackoff time.Duration, 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(initialBackoff)
initialBackoff *= 2
}
result, err = f()
if err == nil || !api.ErrorIsIn(err, errorTypes) {
return result, err
}
}
log.Errorf("Failed after %d attempts, last error: %s", attempts, err)
return result, err
}