zoo: refacter and save keys (#403)

1 files changed, 190 insertions, 0 deletions

diff --git a/cmd/zoo/client/client.go b/cmd/zoo/client/client.go
new file mode 100644
index 000000000..9b65e778b
--- /dev/null
+++ b/cmd/zoo/client/client.go
@@ -0,0 +1,190 @@
+// Copyright 2019 The dexon-consensus Authors
+// This file is part of the dexon-consensus library.
+//
+// The dexon-consensus library is free software: you can redistribute it
+// and/or modify it under the terms of the GNU Lesser General Public License as
+// published by the Free Software Foundation, either version 3 of the License,
+// or (at your option) any later version.
+//
+// The dexon-consensus library is distributed in the hope that it will be
+// useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
+// General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the dexon-consensus library. If not, see
+// <http://www.gnu.org/licenses/>.
+
+// A simple monkey that sends random transactions into the network.
+
+package client
+
+import (
+	"context"
+	"crypto/ecdsa"
+	"fmt"
+	"math"
+	"math/big"
+	"time"
+
+	dexon "github.com/dexon-foundation/dexon"
+	"github.com/dexon-foundation/dexon/common"
+	"github.com/dexon-foundation/dexon/core/types"
+	"github.com/dexon-foundation/dexon/crypto"
+	"github.com/dexon-foundation/dexon/ethclient"
+)
+
+type Client struct {
+	ethclient.Client
+
+	source    *ecdsa.PrivateKey
+	networkID *big.Int
+}
+
+func New(ep string) (*Client, error) {
+	client, err := ethclient.Dial(ep)
+	if err != nil {
+		return nil, err
+	}
+
+	networkID, err := client.NetworkID(context.Background())
+	if err != nil {
+		return nil, err
+	}
+
+	return &Client{
+		Client:    *client,
+		networkID: networkID,
+	}, nil
+}
+
+type TransferContext struct {
+	Key       *ecdsa.PrivateKey
+	ToAddress common.Address
+	Amount    *big.Int
+	Data      []byte
+	Nonce     uint64
+	Gas       uint64
+}
+
+func (c *Client) PrepareTx(ctx *TransferContext) *types.Transaction {
+	if ctx.Nonce == math.MaxUint64 {
+		var err error
+		address := crypto.PubkeyToAddress(ctx.Key.PublicKey)
+		ctx.Nonce, err = c.PendingNonceAt(context.Background(), address)
+		if err != nil {
+			panic(err)
+		}
+	}
+
+	if ctx.Gas == uint64(0) {
+		var err error
+		ctx.Gas, err = c.EstimateGas(context.Background(), dexon.CallMsg{
+			Data: ctx.Data,
+		})
+		if err != nil {
+			panic(err)
+		}
+	}
+
+	gasPrice, err := c.SuggestGasPrice(context.Background())
+	if err != nil {
+		panic(err)
+	}
+
+	tx := types.NewTransaction(
+		ctx.Nonce,
+		ctx.ToAddress,
+		ctx.Amount,
+		ctx.Gas,
+		gasPrice,
+		ctx.Data)
+
+	signer := types.NewEIP155Signer(c.networkID)
+	tx, err = types.SignTx(tx, signer, ctx.Key)
+	if err != nil {
+		panic(err)
+	}
+
+	return tx
+}
+
+func (c *Client) Transfer(ctx *TransferContext) {
+	tx := c.PrepareTx(ctx)
+
+	err := c.SendTransaction(context.Background(), tx)
+	if err != nil {
+		panic(err)
+	}
+}
+
+func (c *Client) BatchTransfer(ctxs []*TransferContext) {
+	txs := make([]*types.Transaction, len(ctxs))
+	for i, ctx := range ctxs {
+		txs[i] = c.PrepareTx(ctx)
+	}
+
+	err := c.SendTransactions(context.Background(), txs)
+	if err != nil {
+		panic(err)
+	}
+}
+
+func (c *Client) Deploy(
+	key *ecdsa.PrivateKey, code string, ctors []string, amount *big.Int, nonce uint64) common.Address {
+
+	address := crypto.PubkeyToAddress(key.PublicKey)
+	if nonce == math.MaxUint64 {
+		var err error
+		nonce, err = c.PendingNonceAt(context.Background(), address)
+		if err != nil {
+			panic(err)
+		}
+	}
+
+	var input string
+	for _, ctor := range ctors {
+		input += fmt.Sprintf("%064s", ctor)
+	}
+	data := common.Hex2Bytes(code + input)
+
+	gas, err := c.EstimateGas(context.Background(), dexon.CallMsg{
+		From: address,
+		Data: data,
+	})
+	if err != nil {
+		panic(err)
+	}
+
+	tx := types.NewContractCreation(
+		nonce,
+		amount,
+		gas,
+		big.NewInt(1e9),
+		data)
+
+	signer := types.NewEIP155Signer(c.networkID)
+	tx, err = types.SignTx(tx, signer, key)
+	if err != nil {
+		panic(err)
+	}
+
+	fmt.Println("Sending TX", "fullhash", tx.Hash().String())
+
+	err = c.SendTransaction(context.Background(), tx)
+	if err != nil {
+		panic(err)
+	}
+
+	for {
+		time.Sleep(500 * time.Millisecond)
+		recp, err := c.TransactionReceipt(context.Background(), tx.Hash())
+		if err != nil {
+			if err == dexon.NotFound {
+				continue
+			}
+			panic(err)
+		}
+		return recp.ContractAddress
+	}
+}