extractor.go

package main

import (
	"fmt"
	"log"
	"os"
	"strconv"

	"github.com/ethereum/go-ethereum/common"
	"github.com/ethereum/go-ethereum/consensus/ethash"
	"github.com/ethereum/go-ethereum/core"
	"github.com/ethereum/go-ethereum/core/state"
	"github.com/ethereum/go-ethereum/core/types"
	"github.com/ethereum/go-ethereum/core/vm"
	"github.com/ethereum/go-ethereum/ethdb"
	"github.com/ethereum/go-ethereum/params"
)

var (
	cache, _ = strconv.Atoi(os.Args[1])
	ethDb, _ = ethdb.NewLDBDatabase(os.Args[1], cache, 256)
	// executeDb, _ = ethdb.NewMemDatabase()
	engine = ethash.NewFullFaker()

	config   = params.MainnetChainConfig
	vmConfig = vm.Config{}
)

func main() {
	blockchain, err := core.NewBlockChain(ethDb, nil, config, engine, vmConfig, func(block *types.Block) bool { return false })
	st, err := blockchain.State()
	if err != nil {
		log.Fatalf("State bad: %v", err)
	}

	it := state.NewNodeIterator(st)

	for it.Next() {
		addr := common.BytesToAddress(it.Parent.Bytes())
		code := st.GetCode(addr)

		fmt.Printf("CODE[%x]: %v\n", addr, code)
	}
}