monkey: add ERC20 token transfer (#99)

Add ERC20 token (Banana) and feeder
Fix call contract parameters

4 files changed, 125 insertions, 4 deletions

diff --git a/cmd/monkey/banana.go b/cmd/monkey/banana.go
new file mode 100644
index 000000000..c776eba47
--- /dev/null
+++ b/cmd/monkey/banana.go
@@ -0,0 +1,4 @@
+package main
+
+var bananaContract = "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"
+var bananaABIJSON = "[{\"constant\":true,\"inputs\":[],\"name\":\"name\",\"outputs\":[{\"name\":\"\",\"type\":\"string\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"_spender\",\"type\":\"address\"},{\"name\":\"_value\",\"type\":\"uint256\"}],\"name\":\"approve\",\"outputs\":[{\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"totalSupply\",\"outputs\":[{\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"_from\",\"type\":\"address\"},{\"name\":\"_to\",\"type\":\"address\"},{\"name\":\"_value\",\"type\":\"uint256\"}],\"name\":\"transferFrom\",\"outputs\":[{\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"decimals\",\"outputs\":[{\"name\":\"\",\"type\":\"uint8\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"_spender\",\"type\":\"address\"},{\"name\":\"_subtractedValue\",\"type\":\"uint256\"}],\"name\":\"decreaseApproval\",\"outputs\":[{\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"_owner\",\"type\":\"address\"}],\"name\":\"balanceOf\",\"outputs\":[{\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"owner\",\"outputs\":[{\"name\":\"\",\"type\":\"address\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"symbol\",\"outputs\":[{\"name\":\"\",\"type\":\"string\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"_to\",\"type\":\"address\"},{\"name\":\"_value\",\"type\":\"uint256\"}],\"name\":\"transfer\",\"outputs\":[{\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"_spender\",\"type\":\"address\"},{\"name\":\"_addedValue\",\"type\":\"uint256\"}],\"name\":\"increaseApproval\",\"outputs\":[{\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"_owner\",\"type\":\"address\"},{\"name\":\"_spender\",\"type\":\"address\"}],\"name\":\"allowance\",\"outputs\":[{\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"newOwner\",\"type\":\"address\"}],\"name\":\"transferOwnership\",\"outputs\":[],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"constructor\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"name\":\"previousOwner\",\"type\":\"address\"},{\"indexed\":true,\"name\":\"newOwner\",\"type\":\"address\"}],\"name\":\"OwnershipTransferred\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"name\":\"owner\",\"type\":\"address\"},{\"indexed\":true,\"name\":\"spender\",\"type\":\"address\"},{\"indexed\":false,\"name\":\"value\",\"type\":\"uint256\"}],\"name\":\"Approval\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"name\":\"from\",\"type\":\"address\"},{\"indexed\":true,\"name\":\"to\",\"type\":\"address\"},{\"indexed\":false,\"name\":\"value\",\"type\":\"uint256\"}],\"name\":\"Transfer\",\"type\":\"event\"}]"
diff --git a/cmd/monkey/feeder.go b/cmd/monkey/feeder.go
new file mode 100644
index 000000000..7be6808d3
--- /dev/null
+++ b/cmd/monkey/feeder.go
@@ -0,0 +1,112 @@
+// Copyright 2018 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/>.
+
+package main
+
+import (
+	"context"
+	"fmt"
+	"math"
+	"math/big"
+	"math/rand"
+	"strings"
+	"time"
+
+	"github.com/dexon-foundation/dexon/accounts/abi"
+	"github.com/dexon-foundation/dexon/common"
+	"github.com/dexon-foundation/dexon/crypto"
+)
+
+var bananaABI abi.ABI
+
+func init() {
+	var err error
+	bananaABI, err = abi.JSON(strings.NewReader(bananaABIJSON))
+	if err != nil {
+		panic(err)
+	}
+}
+
+func (m *Monkey) DistributeBanana(contract common.Address) {
+	fmt.Println("Distributing Banana to random accounts ...")
+	address := crypto.PubkeyToAddress(m.source.PublicKey)
+	nonce, err := m.client.PendingNonceAt(context.Background(), address)
+	if err != nil {
+		panic(err)
+	}
+
+	ctxs := make([]*transferContext, len(m.keys))
+	amount := new(big.Int)
+	amount.SetString("10000000000000000", 10)
+	for i, key := range m.keys {
+		address := crypto.PubkeyToAddress(key.PublicKey)
+		input, err := bananaABI.Pack("transfer", address, amount)
+		if err != nil {
+			panic(err)
+		}
+		ctxs[i] = &transferContext{
+			Key:       m.source,
+			ToAddress: contract,
+			Data:      input,
+			Nonce:     nonce,
+			Gas:       210000,
+		}
+		nonce += 1
+	}
+	m.batchTransfer(ctxs)
+	time.Sleep(20 * time.Second)
+}
+
+func (m *Monkey) Feed() {
+	fmt.Println("Deploying contract ...")
+	contract := m.deploy(m.source, bananaContract, nil, new(big.Int), math.MaxUint64)
+	fmt.Println("  Contract deployed: ", contract.String())
+	m.DistributeBanana(contract)
+
+	time.Sleep(5 * time.Second)
+
+	nonce := uint64(0)
+	for {
+		fmt.Println("nonce", nonce)
+		ctxs := make([]*transferContext, len(m.keys))
+		for i, key := range m.keys {
+			to := crypto.PubkeyToAddress(m.keys[rand.Int()%len(m.keys)].PublicKey)
+			input, err := bananaABI.Pack("transfer", to, big.NewInt(rand.Int63n(100)+1))
+			if err != nil {
+				panic(err)
+			}
+
+			ctx := &transferContext{
+				Key:       key,
+				ToAddress: contract,
+				Data:      input,
+				Nonce:     nonce,
+				Gas:       210000,
+			}
+			if *batch {
+				ctxs[i] = ctx
+			} else {
+				m.transfer(ctx)
+			}
+		}
+		if *batch {
+			m.batchTransfer(ctxs)
+		}
+		nonce += 1
+		time.Sleep(time.Duration(*sleep) * time.Millisecond)
+	}
+}
diff --git a/cmd/monkey/gambler.go b/cmd/monkey/gambler.go
index 8151f2c22..f8e57163c 100644
--- a/cmd/monkey/gambler.go
+++ b/cmd/monkey/gambler.go
@@ -78,9 +78,10 @@ func (m *Monkey) Gamble() {
 			ctx := &transferContext{
 				Key:       key,
 				ToAddress: contract,
-				Amount:    big.NewInt(1),
+				Amount:    big.NewInt(100000),
 				Data:      input,
 				Nonce:     nonce,
+				Gas:       210000,
 			}
 			if *batch {
 				ctxs[i] = ctx
diff --git a/cmd/monkey/monkey.go b/cmd/monkey/monkey.go
index 21fdfc656..bbf534952 100644
--- a/cmd/monkey/monkey.go
+++ b/cmd/monkey/monkey.go
@@ -42,6 +42,7 @@ var n = flag.Int("n", 100, "number of random accounts")
 var gambler = flag.Bool("gambler", false, "make this monkey a gambler")
 var batch = flag.Bool("batch", false, "monkeys will send transaction in batch")
 var sleep = flag.Int("sleep", 500, "time in millisecond that monkeys sleep between each transaction")
+var feeder = flag.Bool("feeder", false, "make this monkey a feeder")
 
 type Monkey struct {
 	client    *ethclient.Client
@@ -112,9 +113,9 @@ func (m *Monkey) prepareTx(ctx *transferContext) *types.Transaction {
 		ctx.Nonce,
 		ctx.ToAddress,
 		ctx.Amount,
-		uint64(21000),
+		ctx.Gas,
 		big.NewInt(1e9),
-		nil)
+		ctx.Data)
 
 	signer := types.NewEIP155Signer(m.networkID)
 	tx, err := types.SignTx(tx, signer, ctx.Key)
@@ -149,9 +150,9 @@ func (m *Monkey) batchTransfer(ctxs []*transferContext) {
 func (m *Monkey) 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
-		address := crypto.PubkeyToAddress(key.PublicKey)
 		nonce, err = m.client.PendingNonceAt(context.Background(), address)
 		if err != nil {
 			panic(err)
@@ -165,6 +166,7 @@ func (m *Monkey) deploy(
 	data := common.Hex2Bytes(code + input)
 
 	gas, err := m.client.EstimateGas(context.Background(), dexon.CallMsg{
+		From: address,
 		Data: data,
 	})
 	if err != nil {
@@ -274,6 +276,8 @@ func main() {
 	m.Distribute()
 	if *gambler {
 		m.Gamble()
+	} else if *feeder {
+		m.Feed()
 	} else {
 		m.Crazy()
 	}