rocksdb-api/main.go

package main

import (
	"encoding/binary"
	"log"
	"sync"

	"github.com/tecbot/gorocksdb"
)

func CreateData() {

	db, cfs := OpenDataBase()

	GCOUNT := 10

	wg := &sync.WaitGroup{}
	wg.Add(GCOUNT)

	for i := 0; i < GCOUNT; i++ {
		go putData(wg, db, cfs)
	}

	wg.Wait()
}

func queryData(wg *sync.WaitGroup, db *gorocksdb.DB, cfs []*gorocksdb.ColumnFamilyHandle) {
	defer wg.Done()

	// now := time.Now().Unix()

	ro := gorocksdb.NewDefaultReadOptions()

	COUNT := 100

	cf := cfs[len(cfs)-1]
	iter := db.NewIteratorCF(ro, cf)

	temp := make([]byte, 8)
	binary.BigEndian.PutUint64(temp, 10)
	iter.Seek(temp)

	log.Println(iter.Valid())

	for i := 0; i < COUNT && iter.Valid(); i++ {
		bkey := iter.Key().Data()
		key := string(bkey)
		value := string(iter.Value().Data())

		log.Println(binary.BigEndian.Uint64(bkey[0:8]), "\nkey:", key, "\n", "value:", value)

		iter.Next()
	}

	// log.Println(int64(COUNT) / (time.Now().Unix() - now))
}

func QueryData() {
	db, cfs := OpenDataBase()

	GCOUNT := 1

	wg := &sync.WaitGroup{}
	wg.Add(GCOUNT)

	for i := 0; i < GCOUNT; i++ {
		go queryData(wg, db, cfs)
	}

	wg.Wait()
}

func main() {

	QueryData()
	// CreateData()

	//  db.Put(wo, []byte("foo"), []byte("bar"))

	// ro := gorocksdb.NewDefaultReadOptions()
	// db, err := gorocksdb.OpenDb(opts, "./.rocksdb")
	// if err != nil {
	// 	panic(err)
	// }
	// s, err := db.Get(ro, []byte("foo"))
	// if err != nil {
	// 	panic(err)
	// }
	// log.Println(string(s.Data()))

}