344 lines
6.9 KiB
Go
344 lines
6.9 KiB
Go
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package boltdb
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import (
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"bytes"
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"errors"
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"time"
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bolt "go.etcd.io/bbolt"
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)
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var (
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ErrBucketInvalid = errors.New("bucket is invalid")
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ErrKeyInvalid = errors.New("key is invalid")
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ErrValueInvalid = errors.New("value is invalid")
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ErrBucketNotFound = errors.New("bucket not found")
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ErrKeyNotFound = errors.New("key not found")
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ErrPrefixInvalid = errors.New("prefix is invalid")
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ErrRangeStartInvalid = errors.New("range start is invalid")
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ErrRangeEndInvalid = errors.New("range end is invalid")
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)
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type boltDB struct {
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db *bolt.DB
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}
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func New(config ...Config) (db *boltDB) {
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cfg := configDefault(config...)
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db = &boltDB{}
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db.db, _ = bolt.Open(cfg.Name, 0600, &bolt.Options{Timeout: 1 * time.Second})
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return
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}
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// 获取数据库地址
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func (cc *boltDB) Path() (rv string) {
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return cc.db.Path()
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}
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// 关闭
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func (cc *boltDB) Close() (rer error) {
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return cc.db.Close()
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}
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// 建表
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func (cc *boltDB) CreateBucket(bucketName ...string) {
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if bucketName == nil {
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return
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}
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cc.db.Update(func(tx *bolt.Tx) error {
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for _, name := range bucketName {
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if name != "" {
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tx.CreateBucketIfNotExists([]byte(name))
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}
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}
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return nil
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})
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}
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// 删表
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func (cc *boltDB) DeleteBucket(bucketName ...string) {
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if bucketName == nil {
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return
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}
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cc.db.Update(func(tx *bolt.Tx) error {
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for _, name := range bucketName {
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if name != "" {
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tx.DeleteBucket([]byte(name))
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}
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}
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return nil
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})
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}
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// 保存
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func (cc *boltDB) Set(bucketName, key string, value []byte) (rer error) {
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rer = ErrBucketInvalid
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if bucketName == "" {
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return
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}
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rer = ErrKeyInvalid
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if key == "" {
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return
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}
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rer = ErrValueInvalid
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if value == nil {
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return
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}
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return cc.db.Update(func(tx *bolt.Tx) error {
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b := tx.Bucket([]byte(bucketName))
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if b == nil {
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return ErrBucketNotFound
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}
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return b.Put([]byte(key), value)
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})
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}
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// 读取
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func (cc *boltDB) Get(bucketName, key string) (rv []byte, rer error) {
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rer = ErrBucketInvalid
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if bucketName == "" {
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return
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}
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rer = ErrKeyInvalid
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if key == "" {
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return
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}
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rer = cc.db.View(func(tx *bolt.Tx) error {
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b := tx.Bucket([]byte(bucketName))
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if b == nil {
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return ErrBucketNotFound
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}
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rv = b.Get([]byte(key))
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if rv == nil {
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return ErrKeyNotFound
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}
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return nil
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})
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return
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}
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// 存在
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func (cc *boltDB) Has(bucketName, key string) (ok bool) {
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_, err := cc.Get(bucketName, key)
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return errors.Is(err, nil)
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}
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// 不存在
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func (cc *boltDB) HasNot(bucketName, key string) (ok bool) {
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_, err := cc.Get(bucketName, key)
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return errors.Is(err, ErrKeyNotFound)
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}
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// 删除
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func (cc *boltDB) Delete(bucketName, key string) (rer error) {
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rer = ErrBucketInvalid
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if bucketName == "" {
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return
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}
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rer = ErrKeyInvalid
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if key == "" {
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return
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}
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return cc.db.Update(func(tx *bolt.Tx) error {
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b := tx.Bucket([]byte(bucketName))
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if b == nil {
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return ErrBucketNotFound
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}
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return b.Delete([]byte(key))
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})
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}
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// 查询所有list
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func (cc *boltDB) GetList(bucketName string) (rv [][]byte, rer error) {
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rer = ErrBucketInvalid
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if bucketName == "" {
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return
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}
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rer = cc.db.View(func(tx *bolt.Tx) error {
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b := tx.Bucket([]byte(bucketName))
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if b == nil {
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return ErrBucketNotFound
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}
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return b.ForEach(func(k, v []byte) error {
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rv = append(rv, v)
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return nil
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})
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})
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return
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}
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// 查询所有map
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func (cc *boltDB) GetMap(bucketName string) (rv map[string][]byte, rer error) {
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rv = make(map[string][]byte)
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rer = ErrBucketInvalid
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if bucketName == "" {
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return
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}
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rer = cc.db.View(func(tx *bolt.Tx) error {
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b := tx.Bucket([]byte(bucketName))
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if b == nil {
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return ErrBucketNotFound
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}
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return b.ForEach(func(k, v []byte) error {
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rv[string(k)] = v
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return nil
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})
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})
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return
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}
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// 前缀扫描list
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func (cc *boltDB) ScanPrefixList(bucketName, prefix string) (rv [][]byte, rer error) {
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rer = ErrBucketInvalid
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if bucketName == "" {
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return
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}
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rer = ErrPrefixInvalid
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if prefix == "" {
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return
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}
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rer = cc.db.View(func(tx *bolt.Tx) error {
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b := tx.Bucket([]byte(bucketName))
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if b == nil {
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return ErrBucketNotFound
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}
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c := b.Cursor()
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for k, v := c.Seek([]byte(prefix)); k != nil && bytes.HasPrefix(k, []byte(prefix)); k, v = c.Next() {
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rv = append(rv, v)
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}
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return nil
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})
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return
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}
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// 前缀扫描map
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func (cc *boltDB) ScanPrefixMap(bucketName, prefix string) (rv map[string][]byte, rer error) {
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rv = make(map[string][]byte)
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rer = ErrBucketInvalid
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if bucketName == "" {
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return
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}
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rer = ErrPrefixInvalid
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if prefix == "" {
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return
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}
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rer = cc.db.View(func(tx *bolt.Tx) error {
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b := tx.Bucket([]byte(bucketName))
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if b == nil {
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return ErrBucketNotFound
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}
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c := b.Cursor()
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for k, v := c.Seek([]byte(prefix)); k != nil && bytes.HasPrefix(k, []byte(prefix)); k, v = c.Next() {
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rv[string(k)] = v
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}
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return nil
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})
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return
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}
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// 后缀扫描list
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func (cc *boltDB) ScanSuffixList(bucketName, prefix string) (rv [][]byte, rer error) {
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rer = ErrBucketInvalid
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if bucketName == "" {
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return
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}
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rer = ErrPrefixInvalid
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if prefix == "" {
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return
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}
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rer = cc.db.View(func(tx *bolt.Tx) error {
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b := tx.Bucket([]byte(bucketName))
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if b == nil {
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return ErrBucketNotFound
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}
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c := b.Cursor()
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for k, v := c.Seek([]byte(prefix)); k != nil && bytes.HasSuffix(k, []byte(prefix)); k, v = c.Next() {
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rv = append(rv, v)
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}
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return nil
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})
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return
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}
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// 后缀扫描map
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func (cc *boltDB) ScanSuffixMap(bucketName, prefix string) (rv map[string][]byte, rer error) {
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rv = make(map[string][]byte)
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rer = ErrBucketInvalid
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if bucketName == "" {
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return
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}
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rer = ErrPrefixInvalid
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if prefix == "" {
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return
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}
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rer = cc.db.View(func(tx *bolt.Tx) error {
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b := tx.Bucket([]byte(bucketName))
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if b == nil {
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return ErrBucketNotFound
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}
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c := b.Cursor()
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for k, v := c.Seek([]byte(prefix)); k != nil && bytes.HasSuffix(k, []byte(prefix)); k, v = c.Next() {
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rv[string(k)] = v
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}
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return nil
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})
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return
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}
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// 范围扫描list
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func (cc *boltDB) ScanRangeList(bucketName, start, end string) (rv [][]byte, rer error) {
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rer = ErrBucketInvalid
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if bucketName == "" {
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return
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}
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rer = ErrRangeStartInvalid
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if start == "" {
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return
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}
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rer = ErrRangeEndInvalid
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if end == "" {
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return
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}
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rer = cc.db.View(func(tx *bolt.Tx) error {
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b := tx.Bucket([]byte(bucketName))
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if b == nil {
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return ErrBucketNotFound
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}
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c := b.Cursor()
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for k, v := c.Seek([]byte(start)); k != nil && bytes.Compare(k, []byte(end)) <= 0; k, v = c.Next() {
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rv = append(rv, v)
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}
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return nil
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})
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return
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}
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// 范围扫描list
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func (cc *boltDB) ScanRangeMap(bucketName, start, end string) (rv map[string][]byte, rer error) {
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rv = make(map[string][]byte)
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rer = ErrBucketInvalid
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if bucketName == "" {
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return
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}
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rer = ErrRangeStartInvalid
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if start == "" {
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return
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}
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rer = ErrRangeEndInvalid
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if end == "" {
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return
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}
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rer = cc.db.View(func(tx *bolt.Tx) error {
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b := tx.Bucket([]byte(bucketName))
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if b == nil {
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return ErrBucketNotFound
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}
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c := b.Cursor()
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for k, v := c.Seek([]byte(start)); k != nil && bytes.Compare(k, []byte(end)) <= 0; k, v = c.Next() {
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rv[string(k)] = v
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}
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return nil
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})
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return
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}
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