leveldb.go

package main

import (
	"bytes"
	"encoding/gob"

	"github.com/syndtr/goleveldb/leveldb"
)

const dbpath = ".leveldb"

var key = []byte("key")

type trx struct {
	Txid  string
	To    string
	From  string
	Value float64
}

var txdata = trx{Txid: "txid", To: "addr", From: "src", Value: 123}

func main() {
	db, err := leveldb.OpenFile(dbpath, nil)
	if err != nil {
		panic(err)
	}
	defer db.Close()

	var buf bytes.Buffer
	if err := gob.NewEncoder(&buf).Encode(txdata); err != nil {
		panic(err)
	}

	data, err := db.Get(key, nil)
	if err != nil {
		panic(err)
	}

	nbuf := bytes.NewReader(data)
	var nutxo trx
	if err := gob.NewDecoder(nbuf).Decode(&nutxo); err != nil {
		panic(err)
	}
}