mirror of https://github.com/minio/minio.git
40 lines
1.2 KiB
Go
40 lines
1.2 KiB
Go
// Copyright (c) 2015-2021 MinIO, Inc.
|
|
//
|
|
// This file is part of MinIO Object Storage stack
|
|
//
|
|
// This program is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU Affero General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// This program is distributed in the hope that it will be useful
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU Affero General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Affero General Public License
|
|
// along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
package dsync
|
|
|
|
import (
|
|
"math/rand"
|
|
"time"
|
|
)
|
|
|
|
func backoffWait(min, unit, cap time.Duration) func(*rand.Rand, uint) time.Duration {
|
|
if unit > time.Hour {
|
|
// Protect against integer overflow
|
|
panic("unit cannot exceed one hour")
|
|
}
|
|
return func(r *rand.Rand, attempt uint) time.Duration {
|
|
sleep := min
|
|
sleep += unit * time.Duration(attempt)
|
|
if sleep > cap {
|
|
sleep = cap
|
|
}
|
|
sleep -= time.Duration(r.Float64() * float64(sleep))
|
|
return sleep
|
|
}
|
|
}
|