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retry.go
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/
retry.go
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package pkg
import (
"time"
"github.com/Sirupsen/logrus"
"github.com/pkg/errors"
)
func Retry(logger logrus.FieldLogger, maxWait time.Duration, failAfter time.Duration, f func() error) (err error) {
var lastStart time.Time
err = errors.New("Did not connect.")
loopWait := time.Millisecond * 100
retryStart := time.Now()
for retryStart.Add(failAfter).After(time.Now()) {
lastStart = time.Now()
if err = f(); err == nil {
return nil
}
if lastStart.Add(maxWait * 2).Before(time.Now()) {
retryStart = time.Now()
}
LogError(err, logger)
logger.Infof("Retrying in %f seconds...", loopWait.Seconds())
time.Sleep(loopWait)
loopWait = loopWait * time.Duration(int64(2))
if loopWait > maxWait {
loopWait = maxWait
}
}
return err
}