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ip_list_kv.go
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ip_list_kv.go
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// Copyright 2024 GoEdge CDN goedge.cdn@gmail.com. All rights reserved. Official site: https://goedge.cn .
package iplibrary
import (
"encoding/binary"
"errors"
"github.com/TeaOSLab/EdgeCommon/pkg/rpc/pb"
"github.com/TeaOSLab/EdgeNode/internal/events"
"github.com/TeaOSLab/EdgeNode/internal/goman"
"github.com/TeaOSLab/EdgeNode/internal/remotelogs"
"github.com/TeaOSLab/EdgeNode/internal/utils/fasttime"
"github.com/TeaOSLab/EdgeNode/internal/utils/idles"
"github.com/TeaOSLab/EdgeNode/internal/utils/kvstore"
"testing"
"time"
)
type KVIPList struct {
ipTable *kvstore.Table[*pb.IPItem]
versionsTable *kvstore.Table[int64]
encoder *IPItemEncoder[*pb.IPItem]
cleanTicker *time.Ticker
isClosed bool
offsetItemKey string
}
func NewKVIPList() (*KVIPList, error) {
var db = &KVIPList{
cleanTicker: time.NewTicker(24 * time.Hour),
encoder: &IPItemEncoder[*pb.IPItem]{},
}
err := db.init()
return db, err
}
func (this *KVIPList) init() error {
store, storeErr := kvstore.DefaultStore()
if storeErr != nil {
return storeErr
}
db, dbErr := store.NewDB("ip_list")
if dbErr != nil {
return dbErr
}
{
table, err := kvstore.NewTable[*pb.IPItem]("ip_items", this.encoder)
if err != nil {
return err
}
this.ipTable = table
err = table.AddFields("expiresAt")
if err != nil {
return err
}
db.AddTable(table)
}
{
table, err := kvstore.NewTable[int64]("versions", kvstore.NewIntValueEncoder[int64]())
if err != nil {
return err
}
this.versionsTable = table
db.AddTable(table)
}
goman.New(func() {
events.OnClose(func() {
_ = this.Close()
this.cleanTicker.Stop()
})
idles.RunTicker(this.cleanTicker, func() {
if this.isClosed {
return
}
deleteErr := this.DeleteExpiredItems()
if deleteErr != nil {
remotelogs.Error("IP_LIST_DB", "clean expired items failed: "+deleteErr.Error())
}
})
})
return nil
}
// Name 数据库名称代号
func (this *KVIPList) Name() string {
return "kvstore"
}
// DeleteExpiredItems 删除过期的条目
func (this *KVIPList) DeleteExpiredItems() error {
if this.isClosed {
return nil
}
for {
var found bool
var currentTime = fasttime.Now().Unix()
err := this.ipTable.
Query().
FieldAsc("expiresAt").
ForUpdate().
Limit(1000).
FindAll(func(tx *kvstore.Tx[*pb.IPItem], item kvstore.Item[*pb.IPItem]) (goNext bool, err error) {
if !item.Value.IsDeleted && item.Value.ExpiredAt == 0 { // never expires
return kvstore.Skip()
}
if item.Value.ExpiredAt < currentTime-7*86400 /** keep for 7 days **/ {
err = tx.Delete(item.Key)
if err != nil {
return false, err
}
found = true
return true, nil
}
found = false
return false, nil
})
if err != nil {
return err
}
if !found {
break
}
}
return nil
}
func (this *KVIPList) AddItem(item *pb.IPItem) error {
if this.isClosed {
return nil
}
// 先删除
var key = this.encoder.EncodeKey(item)
err := this.ipTable.Delete(key)
if err != nil {
return err
}
// 如果是删除,则不再创建新记录
if item.IsDeleted {
return this.UpdateMaxVersion(item.Version)
}
err = this.ipTable.Set(key, item)
if err != nil {
return err
}
return this.UpdateMaxVersion(item.Version)
}
func (this *KVIPList) ReadItems(offset int64, size int64) (items []*pb.IPItem, goNextLoop bool, err error) {
if this.isClosed {
return
}
err = this.ipTable.
Query().
Offset(this.offsetItemKey).
Limit(int(size)).
FindAll(func(tx *kvstore.Tx[*pb.IPItem], item kvstore.Item[*pb.IPItem]) (goNext bool, err error) {
this.offsetItemKey = item.Key
goNextLoop = true
if !item.Value.IsDeleted {
items = append(items, item.Value)
}
return true, nil
})
return
}
// ReadMaxVersion 读取当前最大版本号
func (this *KVIPList) ReadMaxVersion() (int64, error) {
if this.isClosed {
return 0, errors.New("database has been closed")
}
version, err := this.versionsTable.Get("version")
if err != nil {
if kvstore.IsNotFound(err) {
return 0, nil
}
return 0, err
}
return version, nil
}
// UpdateMaxVersion 修改版本号
func (this *KVIPList) UpdateMaxVersion(version int64) error {
if this.isClosed {
return nil
}
return this.versionsTable.Set("version", version)
}
func (this *KVIPList) TestInspect(t *testing.T) error {
return this.ipTable.
Query().
FindAll(func(tx *kvstore.Tx[*pb.IPItem], item kvstore.Item[*pb.IPItem]) (goNext bool, err error) {
if len(item.Key) != 8 {
return false, errors.New("invalid key '" + item.Key + "'")
}
t.Log(binary.BigEndian.Uint64([]byte(item.Key)), "=>", item.Value)
return true, nil
})
}
// Flush to disk
func (this *KVIPList) Flush() error {
return this.ipTable.DB().Store().Flush()
}
func (this *KVIPList) Close() error {
this.isClosed = true
return nil
}