mirror of
https://gitee.com/IrisVega/frp.git
synced 2024-11-01 22:31:29 +08:00
135 lines
3.0 KiB
Go
135 lines
3.0 KiB
Go
// Copyright 2017 fatedier, fatedier@gmail.com
|
|
//
|
|
// 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.
|
|
|
|
package metric
|
|
|
|
import (
|
|
"sync"
|
|
"time"
|
|
)
|
|
|
|
type DateCounter interface {
|
|
TodayCount() int64
|
|
GetLastDaysCount(lastdays int64) []int64
|
|
Inc(int64)
|
|
Dec(int64)
|
|
Snapshot() DateCounter
|
|
Clear()
|
|
}
|
|
|
|
func NewDateCounter(reserveDays int64) DateCounter {
|
|
if reserveDays <= 0 {
|
|
reserveDays = 1
|
|
}
|
|
return newStandardDateCounter(reserveDays)
|
|
}
|
|
|
|
type StandardDateCounter struct {
|
|
reserveDays int64
|
|
counts []int64
|
|
|
|
lastUpdateDate time.Time
|
|
mu sync.Mutex
|
|
}
|
|
|
|
func newStandardDateCounter(reserveDays int64) *StandardDateCounter {
|
|
now := time.Now()
|
|
now = time.Date(now.Year(), now.Month(), now.Day(), 0, 0, 0, 0, now.Location())
|
|
s := &StandardDateCounter{
|
|
reserveDays: reserveDays,
|
|
counts: make([]int64, reserveDays),
|
|
lastUpdateDate: now,
|
|
}
|
|
return s
|
|
}
|
|
|
|
func (c *StandardDateCounter) TodayCount() int64 {
|
|
c.mu.Lock()
|
|
defer c.mu.Unlock()
|
|
|
|
c.rotate(time.Now())
|
|
return c.counts[0]
|
|
}
|
|
|
|
func (c *StandardDateCounter) GetLastDaysCount(lastdays int64) []int64 {
|
|
if lastdays > c.reserveDays {
|
|
lastdays = c.reserveDays
|
|
}
|
|
counts := make([]int64, lastdays)
|
|
|
|
c.mu.Lock()
|
|
defer c.mu.Unlock()
|
|
c.rotate(time.Now())
|
|
for i := 0; i < int(lastdays); i++ {
|
|
counts[i] = c.counts[i]
|
|
}
|
|
return counts
|
|
}
|
|
|
|
func (c *StandardDateCounter) Inc(count int64) {
|
|
c.mu.Lock()
|
|
defer c.mu.Unlock()
|
|
c.rotate(time.Now())
|
|
c.counts[0] += count
|
|
}
|
|
|
|
func (c *StandardDateCounter) Dec(count int64) {
|
|
c.mu.Lock()
|
|
defer c.mu.Unlock()
|
|
c.rotate(time.Now())
|
|
c.counts[0] -= count
|
|
}
|
|
|
|
func (c *StandardDateCounter) Snapshot() DateCounter {
|
|
c.mu.Lock()
|
|
defer c.mu.Unlock()
|
|
tmp := newStandardDateCounter(c.reserveDays)
|
|
for i := 0; i < int(c.reserveDays); i++ {
|
|
tmp.counts[i] = c.counts[i]
|
|
}
|
|
return tmp
|
|
}
|
|
|
|
func (c *StandardDateCounter) Clear() {
|
|
c.mu.Lock()
|
|
defer c.mu.Unlock()
|
|
for i := 0; i < int(c.reserveDays); i++ {
|
|
c.counts[i] = 0
|
|
}
|
|
}
|
|
|
|
// rotate
|
|
// Must hold the lock before calling this function.
|
|
func (c *StandardDateCounter) rotate(now time.Time) {
|
|
now = time.Date(now.Year(), now.Month(), now.Day(), 0, 0, 0, 0, now.Location())
|
|
days := int(now.Sub(c.lastUpdateDate).Hours() / 24)
|
|
|
|
defer func() {
|
|
c.lastUpdateDate = now
|
|
}()
|
|
|
|
if days <= 0 {
|
|
return
|
|
} else if days >= int(c.reserveDays) {
|
|
c.counts = make([]int64, c.reserveDays)
|
|
return
|
|
}
|
|
newCounts := make([]int64, c.reserveDays)
|
|
|
|
for i := days; i < int(c.reserveDays); i++ {
|
|
newCounts[i] = c.counts[i-days]
|
|
}
|
|
c.counts = newCounts
|
|
}
|