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package util
import (
"strings"
"time"
"github.com/seaweedfs/seaweedfs/weed/util/log"
)
var RetryWaitTime = 6 * time.Second
func Retry(name string, job func() error) (err error) {
waitTime := time.Second
hasErr := false
for waitTime < RetryWaitTime {
err = job()
if err == nil {
if hasErr {
log.V(3).Infof("retry %s successfully", name)
}
waitTime = time.Second
break
}
if strings.Contains(err.Error(), "transport") {
hasErr = true
log.V(3).Infof("retry %s: err: %v", name, err)
} else {
break
}
time.Sleep(waitTime)
waitTime += waitTime / 2
}
return err
}
func MultiRetry(name string, errList []string, job func() error) (err error) {
waitTime := time.Second
hasErr := false
for waitTime < RetryWaitTime {
err = job()
if err == nil {
if hasErr {
log.V(3).Infof("retry %s successfully", name)
}
waitTime = time.Second
break
}
if containErr(err.Error(), errList) {
hasErr = true
log.V(3).Infof("retry %s: err: %v", name, err)
} else {
break
}
time.Sleep(waitTime)
waitTime += waitTime / 2
}
return err
}
// RetryUntil retries until the job returns no error or onErrFn returns false
func RetryUntil(name string, job func() error, onErrFn func(err error) (shouldContinue bool)) {
waitTime := time.Second
for {
err := job()
if err == nil {
waitTime = time.Second
break
}
if onErrFn(err) {
if strings.Contains(err.Error(), "transport") {
log.V(3).Infof("retry %s: err: %v", name, err)
}
time.Sleep(waitTime)
if waitTime < RetryWaitTime {
waitTime += waitTime / 2
}
continue
} else {
break
}
}
}
// Nvl return the first non-empty string
func Nvl(values ...string) string {
for _, s := range values {
if s != "" {
return s
}
}
return ""
}
func containErr(err string, errList []string) bool {
for _, e := range errList {
if strings.Contains(err, e) {
return true
}
}
return false
}
|
