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keepalive.go
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/
keepalive.go
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/*
* Copyright 2020 The Dragonfly Authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
//go:generate mockgen -destination mocks/keepalive_mock.go -source keepalive.go -package mocks
package util
import (
"time"
"go.uber.org/atomic"
logger "d7y.io/dragonfly/v2/internal/dflog"
)
type KeepAlive interface {
Keep()
Alive(alive time.Duration) bool
}
type keepAlive struct {
name string
access atomic.Int64
}
func NewKeepAlive(name string) KeepAlive {
return &keepAlive{
name: name,
}
}
func (k *keepAlive) Keep() {
k.access.Store(time.Now().UnixNano())
}
func (k *keepAlive) Alive(alive time.Duration) bool {
var (
now = time.Now()
access = time.Unix(0, k.access.Load())
)
logger.Debugf("%s keepalive check, last access: %s, alive time: %f seconds, current time: %s",
k.name, access.Format(time.RFC3339), alive.Seconds(), now)
return access.Add(alive).After(now)
}