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main.go
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main.go
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package main
import (
"math/big"
"time"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/ethclient"
"github.com/syndtr/goleveldb/leveldb"
emt "github.com/haihongs/eth-multi-transactions"
"github.com/haihongs/eth-multi-transactions/common/logger"
)
var (
Wei = big.NewInt(1)
GWei = big.NewInt(1e9)
Ether = big.NewInt(0).Mul(GWei, GWei) // 1ether = 1e18wei
ChainID = big.NewInt(1)
)
type dest struct {
addr string
percent *big.Int
amt *big.Int // wei based
memo string
}
func main() {
logger.Init(logger.DebugLevel)
// TODO: flag parse
path := "./db"
nodeEndpoint := ""
addr := ""
sk := ""
users := []*dest{
&dest{addr: "0xaaaaa", amt: big.NewInt(456)},
}
// register db
db, err := leveldb.OpenFile(path, nil)
if err != nil {
logger.Fatal("failed to init leveldb", "dir", path, "err", err)
}
defer db.Close()
wdDB := emt.NewWithdrawalDB(db)
// register ethclient
ethc, err := ethclient.Dial(nodeEndpoint)
if err != nil {
logger.Fatal("failed to init ethclient", "err", err)
}
// initial condition check
{
// check kv
initValue := emt.ToBigEndianBytes(1)
if err := wdDB.GetOrSet([]byte("kv-id"), initValue); err != nil {
logger.Fatal("condition check failed", "err", err)
}
if err := wdDB.GetOrSet([]byte("kv-nonce"), initValue); err != nil {
logger.Fatal("condition check failed", "err", err)
}
}
// generate withdrawals
for _, u := range users {
if err := wdDB.Insert(u.addr, u.amt, 0, 0, "", uint64(time.Now().Unix()), uint64(time.Now().Unix())); err != nil {
logger.Info("failed to insert db", "err", err, "addr", u.addr, "amount", u.amt)
continue
}
}
// main loop
for {
if err := handle(wdDB, ethc, addr, sk); err != nil {
logger.Error("failed to handle it", "err", err)
}
time.Sleep(5 * 60 * time.Second)
}
}
func handle(db *emt.WdDB, ethc *ethclient.Client, addr, sk string) error {
fromAddr := common.HexToAddress(addr)
prvKey, err := crypto.HexToECDSA(sk)
if err != nil {
return err
}
// handle
ids, err := db.GetUnhandledRecordsId()
if err != nil {
return err
}
logger.Info("start handling")
for _, id := range ids {
key := append([]byte("status-"), emt.ToBigEndianBytes(id)...)
if err := db.CompareAndSwapStatus(key, 0, 1); err != nil {
logger.Error("failed to CAS status", "err", err, "id", id)
continue
}
obj, err := db.GetWdObjById(id)
if err != nil {
logger.Error("failed to get wd obj", "err", err, "id", id)
continue
}
txId, err := emt.SendEthTransaction(obj, ethc, fromAddr, prvKey, ChainID)
if err != nil {
logger.Error("failed to send eth transaction", "err", err, "id", id)
continue
}
logger.Info("broadcast succeed", "txid", txId)
if err := emt.PollingTransaction(ethc, txId, 3, 60*time.Minute); err != nil {
logger.Error("failed to confirm eth transaction", "err", err, "id", id)
continue
}
if err := db.CompareAndSwapStatus(key, 1, 2); err != nil {
logger.Error("failed to CAS status", "err", err, "id", id)
continue
}
}
logger.Info("finish handling")
return nil
}