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persist_stat.go
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/
persist_stat.go
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// Copyright (c) 2021 Terminus, Inc.
//
// This program is free software: you can use, redistribute, and/or modify
// it under the terms of the GNU Affero General Public License, version 3
// or later ("AGPL"), as published by the Free Software Foundation.
//
// 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.
//
// 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 persist_stat
import (
"sync"
"time"
)
type AccumType int
const (
SUM AccumType = iota
AVG
)
type Policy struct {
AccumTp AccumType
Interval int // second
PreserveDays int
}
type PersistStoreStat interface {
// 对于etcd后端,interval >= 60s,以控制数据量 1day <= 60 * 24 (1440)
SetPolicy(policy Policy) error
Emit(tag string, value int64) error
Last5Min() (map[string]int64, error)
Last20Min() (map[string]int64, error)
Last1Hour() (map[string]int64, error)
Last6Hour() (map[string]int64, error)
Last1Day() (map[string]int64, error)
Stat(beginTimestamp, endTimestamp time.Time) (map[string]int64, error)
Clear(beforeTimeStamp time.Time) error
// Metrics 返回自启动以来的 metric 统计
Metrics() map[string]int64
}
type MemMetrics struct {
sync.RWMutex
m map[string]int64
}
func NewMemMetrics() *MemMetrics {
m := map[string]int64{}
return &MemMetrics{m: m}
}
func (m *MemMetrics) EmitMetric(tag string, value int64) {
m.Lock()
defer m.Unlock()
v, ok := m.m[tag]
if !ok {
m.m[tag] = value
return
}
m.m[tag] = v + value
}
func (m *MemMetrics) GetMetrics() map[string]int64 {
m.RLock()
defer m.RUnlock()
newm := map[string]int64{}
for tag, v := range m.m {
newm[tag] = v
}
return newm
}