seaweedfs/weed/util/retry.go
2021-08-15 20:06:47 -07:00

64 lines
1.1 KiB
Go

package util
import (
"strings"
"time"
"github.com/chrislusf/seaweedfs/weed/glog"
)
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 {
glog.V(0).Infof("retry %s successfully", name)
}
break
}
if strings.Contains(err.Error(), "transport") {
hasErr = true
glog.V(0).Infof("retry %s: err: %v", name, err)
time.Sleep(waitTime)
waitTime += waitTime / 2
} else {
break
}
}
return err
}
func RetryForever(name string, job func() error, onErrFn func(err error) bool) {
waitTime := time.Second
for {
err := job()
if err == nil {
break
}
if onErrFn(err) {
if strings.Contains(err.Error(), "transport") {
glog.V(0).Infof("retry %s: err: %v", name, err)
}
time.Sleep(waitTime)
if waitTime < RetryWaitTime {
waitTime += waitTime / 2
}
continue
}
}
}
// return the first non empty string
func Nvl(values ...string) string {
for _, s := range values {
if s != "" {
return s
}
}
return ""
}