ledisdb/ledis/ledis_db.go

52 lines
1.0 KiB
Go

package ledis
import (
"github.com/siddontang/ledisdb/leveldb"
)
func (db *DB) FlushAll() (drop int64, err error) {
all := [...](func() (int64, error)){
db.flush,
db.lFlush,
db.hFlush,
db.zFlush,
db.bFlush}
for _, flush := range all {
if n, e := flush(); e != nil {
err = e
return
} else {
drop += n
}
}
return
}
func (db *DB) newEliminator() *elimination {
eliminator := newEliminator(db)
eliminator.regRetireContext(KVType, db.kvTx, db.delete)
eliminator.regRetireContext(ListType, db.listTx, db.lDelete)
eliminator.regRetireContext(HashType, db.hashTx, db.hDelete)
eliminator.regRetireContext(ZSetType, db.zsetTx, db.zDelete)
eliminator.regRetireContext(BitType, db.binTx, db.bDelete)
return eliminator
}
func (db *DB) flushRegion(t *tx, minKey []byte, maxKey []byte) (drop int64, err error) {
it := db.db.RangeIterator(minKey, maxKey, leveldb.RangeROpen)
for ; it.Valid(); it.Next() {
t.Delete(it.RawKey())
drop++
if drop&1023 == 0 {
if err = t.Commit(); err != nil {
return
}
}
}
it.Close()
return
}