/
boltdb.go
116 lines (99 loc) · 2.09 KB
/
boltdb.go
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package goll
import (
"github.com/boltdb/bolt"
"github.com/zhuharev/intarr"
)
var (
BucketGollName = []byte("goll")
// subbuckets
BucketSettingName = []byte("s")
BucketMetaName = []byte("m")
BucketWhatName = []byte("w")
)
func boltInit(tx *bolt.Tx) error {
gollBucket, e := tx.CreateBucketIfNotExists(BucketGollName)
if e != nil {
return e
}
gollBucket.CreateBucketIfNotExists(BucketWhatName)
gollBucket.CreateBucketIfNotExists(BucketMetaName)
gollBucket.CreateBucketIfNotExists(BucketSettingName)
return nil
}
func makeKey(what, t []byte) []byte {
return append(t, what...)
}
func boltVoted(tx *bolt.Tx, what []byte, who int) (voted bool, e error) {
gollBucket := tx.Bucket(BucketGollName)
whatBucket := gollBucket.Bucket(BucketWhatName)
if whatBucket == nil {
return // fmt.Errorf("Bucket is nil")
}
bts := whatBucket.Get(what)
if bts == nil {
return
}
slice, e := intarr.Decode(bts)
if e != nil {
return false, e
}
if slice.In(int32(who)) {
voted = true
return
}
return
}
func boltSetVote(tx *bolt.Tx, what []byte, who int, v vote) error {
var (
gollBucket = tx.Bucket(BucketGollName)
whatBucket = gollBucket.Bucket(BucketWhatName)
metaBucket = gollBucket.Bucket(BucketMetaName)
//settingBucket = gollBucket.Bucket(BucketSettingName)
)
bts := whatBucket.Get(what)
sl, e := intarr.Decode(bts)
if e != nil {
return e
}
sl = append(sl, int32(who))
sl.Sort()
bts, e = sl.Encode()
if e != nil {
return e
}
e = whatBucket.Put(what, bts)
if e != nil {
return e
}
bts = metaBucket.Get(what)
meta, e := newMeta(bts)
if e != nil {
return e
}
meta.Total++
meta.TotalUp += int(v)
bts, e = meta.encode()
if e != nil {
return e
}
e = metaBucket.Put(what, bts)
if e != nil {
return e
}
return e
}
func boltGetMeta(tx *bolt.Tx, what []byte, who ...int) (meta Meta, voted bool, e error) {
var (
gollBucket = tx.Bucket(BucketGollName)
metaBucket = gollBucket.Bucket(BucketMetaName)
)
bts := metaBucket.Get(what)
meta, e = newMeta(bts)
if e != nil {
return
}
if len(who) > 0 {
voted, e = boltVoted(tx, what, who[0])
}
return
}