arnaucube
arnaucube/hermez-nodePublic Self-hosted repository
hermez-node/test/ethclient.go
test/ethclient.goRaw
   1package test
   2
   3import (
   4	"context"
   5	"encoding/binary"
   6	"encoding/json"
   7	"fmt"
   8	"math/big"
   9	"reflect"
  10	"sync"
  11	"time"
  12
  13	"github.com/ethereum/go-ethereum"
  14	ethCommon "github.com/ethereum/go-ethereum/common"
  15	"github.com/ethereum/go-ethereum/core/types"
  16	"github.com/hermeznetwork/hermez-node/common"
  17	"github.com/hermeznetwork/hermez-node/eth"
  18	"github.com/hermeznetwork/hermez-node/log"
  19	"github.com/hermeznetwork/tracerr"
  20	"github.com/iden3/go-iden3-crypto/babyjub"
  21	"github.com/mitchellh/copystructure"
  22)
  23
  24func init() {
  25	copystructure.Copiers[reflect.TypeOf(big.Int{})] =
  26		func(raw interface{}) (interface{}, error) {
  27			in := raw.(big.Int)
  28			out := new(big.Int).Set(&in)
  29			return *out, nil
  30		}
  31}
  32
  33// WDelayerBlock stores all the data related to the WDelayer SC from an ethereum block
  34type WDelayerBlock struct {
  35	// State     eth.WDelayerState // TODO
  36	Vars      common.WDelayerVariables
  37	Events    eth.WDelayerEvents
  38	Txs       map[ethCommon.Hash]*types.Transaction
  39	Constants *common.WDelayerConstants
  40	Eth       *EthereumBlock
  41}
  42
  43func (w *WDelayerBlock) addTransaction(tx *types.Transaction) *types.Transaction {
  44	txHash := tx.Hash()
  45	w.Txs[txHash] = tx
  46	return tx
  47}
  48
  49func (w *WDelayerBlock) deposit(txHash ethCommon.Hash, owner, token ethCommon.Address, amount *big.Int) {
  50	w.Events.Deposit = append(w.Events.Deposit, eth.WDelayerEventDeposit{
  51		Owner:            owner,
  52		Token:            token,
  53		Amount:           amount,
  54		DepositTimestamp: uint64(w.Eth.Time),
  55		TxHash:           txHash,
  56	})
  57}
  58
  59// RollupBlock stores all the data related to the Rollup SC from an ethereum block
  60type RollupBlock struct {
  61	State     eth.RollupState
  62	Vars      common.RollupVariables
  63	Events    eth.RollupEvents
  64	Txs       map[ethCommon.Hash]*types.Transaction
  65	Constants *common.RollupConstants
  66	Eth       *EthereumBlock
  67}
  68
  69func (r *RollupBlock) addTransaction(tx *types.Transaction) *types.Transaction {
  70	txHash := tx.Hash()
  71	r.Txs[txHash] = tx
  72	return tx
  73}
  74
  75var (
  76	errBidClosed   = fmt.Errorf("Bid has already been closed")
  77	errBidNotOpen  = fmt.Errorf("Bid has not been opened yet")
  78	errBidBelowMin = fmt.Errorf("Bid below minimum")
  79	errCoordNotReg = fmt.Errorf("Coordinator not registered")
  80)
  81
  82// AuctionBlock stores all the data related to the Auction SC from an ethereum block
  83type AuctionBlock struct {
  84	State     eth.AuctionState
  85	Vars      common.AuctionVariables
  86	Events    eth.AuctionEvents
  87	Txs       map[ethCommon.Hash]*types.Transaction
  88	Constants *common.AuctionConstants
  89	Eth       *EthereumBlock
  90}
  91
  92func (a *AuctionBlock) addTransaction(tx *types.Transaction) *types.Transaction {
  93	txHash := tx.Hash()
  94	a.Txs[txHash] = tx
  95	return tx
  96}
  97
  98func (a *AuctionBlock) getSlotNumber(blockNumber int64) int64 {
  99	if a.Eth.BlockNum >= a.Constants.GenesisBlockNum {
 100		return (blockNumber - a.Constants.GenesisBlockNum) / int64(a.Constants.BlocksPerSlot)
 101	}
 102	return 0
 103}
 104
 105func (a *AuctionBlock) getCurrentSlotNumber() int64 {
 106	return a.getSlotNumber(a.Eth.BlockNum)
 107}
 108
 109func (a *AuctionBlock) getSlotSet(slot int64) int64 {
 110	return slot % int64(len(a.Vars.DefaultSlotSetBid))
 111}
 112
 113func (a *AuctionBlock) getMinBidBySlot(slot int64) (*big.Int, error) {
 114	if slot < a.getCurrentSlotNumber()+int64(a.Vars.ClosedAuctionSlots) {
 115		return nil, tracerr.Wrap(errBidClosed)
 116	}
 117
 118	slotSet := a.getSlotSet(slot)
 119	// fmt.Println("slot:", slot, "slotSet:", slotSet)
 120	var prevBid *big.Int
 121	slotState, ok := a.State.Slots[slot]
 122	if !ok {
 123		slotState = eth.NewSlotState()
 124		a.State.Slots[slot] = slotState
 125	}
 126	// If the bidAmount for a slot is 0 it means that it has not yet been bid, so the midBid will be the minimum
 127	// bid for the slot time plus the outbidding set, otherwise it will be the bidAmount plus the outbidding
 128	if slotState.BidAmount.Cmp(big.NewInt(0)) == 0 {
 129		prevBid = a.Vars.DefaultSlotSetBid[slotSet]
 130	} else {
 131		prevBid = slotState.BidAmount
 132	}
 133	outBid := new(big.Int).Set(prevBid)
 134	// fmt.Println("outBid:", outBid)
 135	outBid.Mul(outBid, big.NewInt(int64(a.Vars.Outbidding)))
 136	outBid.Div(outBid, big.NewInt(10000)) //nolint:gomnd
 137	outBid.Add(prevBid, outBid)
 138	// fmt.Println("minBid:", outBid)
 139	return outBid, nil
 140}
 141
 142func (a *AuctionBlock) forge(forger ethCommon.Address) error {
 143	if ok, err := a.canForge(forger, a.Eth.BlockNum); err != nil {
 144		return tracerr.Wrap(err)
 145	} else if !ok {
 146		return tracerr.Wrap(fmt.Errorf("Can't forge"))
 147	}
 148
 149	slotToForge := a.getSlotNumber(a.Eth.BlockNum)
 150	slotState, ok := a.State.Slots[slotToForge]
 151	if !ok {
 152		slotState = eth.NewSlotState()
 153		a.State.Slots[slotToForge] = slotState
 154	}
 155
 156	if !slotState.ForgerCommitment {
 157		// Get the relativeBlock to check if the slotDeadline has been exceeded
 158		relativeBlock := a.Eth.BlockNum - (a.Constants.GenesisBlockNum +
 159			(slotToForge * int64(a.Constants.BlocksPerSlot)))
 160
 161		if relativeBlock < int64(a.Vars.SlotDeadline) {
 162			slotState.ForgerCommitment = true
 163		}
 164	}
 165
 166	slotState.Fulfilled = true
 167
 168	a.Events.NewForge = append(a.Events.NewForge, eth.AuctionEventNewForge{
 169		Forger:      forger,
 170		SlotToForge: slotToForge,
 171	})
 172	return nil
 173}
 174
 175func (a *AuctionBlock) canForge(forger ethCommon.Address, blockNum int64) (bool, error) {
 176	if blockNum < a.Constants.GenesisBlockNum {
 177		return false, tracerr.Wrap(fmt.Errorf("Auction has not started yet"))
 178	}
 179
 180	slotToForge := a.getSlotNumber(blockNum)
 181	// fmt.Printf("DBG canForge slot: %v\n", slotToForge)
 182	// Get the relativeBlock to check if the slotDeadline has been exceeded
 183	relativeBlock := blockNum - (a.Constants.GenesisBlockNum + (slotToForge * int64(a.Constants.BlocksPerSlot)))
 184
 185	// If the closedMinBid is 0 it means that we have to take as minBid the one that is set for this slot set,
 186	// otherwise the one that has been saved will be used
 187	var minBid *big.Int
 188	slotState, ok := a.State.Slots[slotToForge]
 189	if !ok {
 190		slotState = eth.NewSlotState()
 191		a.State.Slots[slotToForge] = slotState
 192	}
 193	if slotState.ClosedMinBid.Cmp(big.NewInt(0)) == 0 {
 194		minBid = a.Vars.DefaultSlotSetBid[a.getSlotSet(slotToForge)]
 195	} else {
 196		minBid = slotState.ClosedMinBid
 197	}
 198
 199	if !slotState.ForgerCommitment && (relativeBlock >= int64(a.Vars.SlotDeadline)) {
 200		// if the relative block has exceeded the slotDeadline and no batch has been forged, anyone can forge
 201		return true, nil
 202	} else if coord, ok := a.State.Coordinators[slotState.Bidder]; ok &&
 203		coord.Forger == forger && slotState.BidAmount.Cmp(minBid) >= 0 {
 204		// if forger bidAmount has exceeded the minBid it can forge
 205		return true, nil
 206	} else if a.Vars.BootCoordinator == forger && slotState.BidAmount.Cmp(minBid) == -1 {
 207		// if it's the boot coordinator and it has not been bid or the bid is below the minimum it can forge
 208		return true, nil
 209	} else {
 210		return false, nil
 211	}
 212}
 213
 214// EthereumBlock stores all the generic data related to the an ethereum block
 215type EthereumBlock struct {
 216	BlockNum   int64
 217	Time       int64
 218	Hash       ethCommon.Hash
 219	ParentHash ethCommon.Hash
 220	Tokens     map[ethCommon.Address]eth.ERC20Consts
 221	Nonce      uint64
 222	// state      ethState
 223}
 224
 225// Block represents a ethereum block
 226type Block struct {
 227	Rollup   *RollupBlock
 228	Auction  *AuctionBlock
 229	WDelayer *WDelayerBlock
 230	Eth      *EthereumBlock
 231}
 232
 233func (b *Block) copy() *Block {
 234	bCopyRaw, err := copystructure.Copy(b)
 235	if err != nil {
 236		panic(err)
 237	}
 238	bCopy := bCopyRaw.(*Block)
 239	return bCopy
 240}
 241
 242// Next prepares the successive block.
 243func (b *Block) Next() *Block {
 244	blockNext := b.copy()
 245	blockNext.Rollup.Events = eth.NewRollupEvents()
 246	blockNext.Auction.Events = eth.NewAuctionEvents()
 247
 248	blockNext.Eth.BlockNum = b.Eth.BlockNum + 1
 249	blockNext.Eth.ParentHash = b.Eth.Hash
 250
 251	blockNext.Rollup.Constants = b.Rollup.Constants
 252	blockNext.Auction.Constants = b.Auction.Constants
 253	blockNext.WDelayer.Constants = b.WDelayer.Constants
 254	blockNext.Rollup.Eth = blockNext.Eth
 255	blockNext.Auction.Eth = blockNext.Eth
 256	blockNext.WDelayer.Eth = blockNext.Eth
 257
 258	return blockNext
 259}
 260
 261// ClientSetup is used to initialize the constants of the Smart Contracts and
 262// other details of the test Client
 263type ClientSetup struct {
 264	RollupConstants   *common.RollupConstants
 265	RollupVariables   *common.RollupVariables
 266	AuctionConstants  *common.AuctionConstants
 267	AuctionVariables  *common.AuctionVariables
 268	WDelayerConstants *common.WDelayerConstants
 269	WDelayerVariables *common.WDelayerVariables
 270	VerifyProof       bool
 271}
 272
 273// NewClientSetupExample returns a ClientSetup example with hardcoded realistic
 274// values.  With this setup, the rollup genesis will be block 1, and block 0
 275// and 1 will be premined.
 276//nolint:gomnd
 277func NewClientSetupExample() *ClientSetup {
 278	// rfield, ok := new(big.Int).SetString("21888242871839275222246405745257275088548364400416034343698204186575808495617", 10)
 279	// if !ok {
 280	// 	panic("bad rfield")
 281	// }
 282	initialMinimalBidding, ok := new(big.Int).SetString("10000000000000000000", 10) // 10 * (1e18)
 283	if !ok {
 284		panic("bad initialMinimalBidding")
 285	}
 286	tokenHEZ := ethCommon.HexToAddress("0x51D243D62852Bba334DD5cc33f242BAc8c698074")
 287	governanceAddress := ethCommon.HexToAddress("0x688EfD95BA4391f93717CF02A9aED9DBD2855cDd")
 288	rollupConstants := &common.RollupConstants{
 289		Verifiers: []common.RollupVerifierStruct{
 290			{
 291				MaxTx:   2048,
 292				NLevels: 32,
 293			},
 294		},
 295		TokenHEZ:                   tokenHEZ,
 296		HermezGovernanceDAOAddress: governanceAddress,
 297		SafetyAddress:              ethCommon.HexToAddress("0x84d8B79E84fe87B14ad61A554e740f6736bF4c20"),
 298		HermezAuctionContract:      ethCommon.HexToAddress("0x8E442975805fb1908f43050c9C1A522cB0e28D7b"),
 299		WithdrawDelayerContract:    ethCommon.HexToAddress("0x5CB7979cBdbf65719BEE92e4D15b7b7Ed3D79114"),
 300	}
 301	rollupVariables := &common.RollupVariables{
 302		FeeAddToken:           big.NewInt(11),
 303		ForgeL1L2BatchTimeout: 9,
 304		WithdrawalDelay:       80,
 305	}
 306	auctionConstants := &common.AuctionConstants{
 307		BlocksPerSlot:         40,
 308		InitialMinimalBidding: initialMinimalBidding,
 309		GenesisBlockNum:       1,
 310		GovernanceAddress:     governanceAddress,
 311		TokenHEZ:              tokenHEZ,
 312		HermezRollup:          ethCommon.HexToAddress("0x474B6e29852257491cf283EfB1A9C61eBFe48369"),
 313	}
 314	auctionVariables := &common.AuctionVariables{
 315		DonationAddress: ethCommon.HexToAddress("0x61Ed87CF0A1496b49A420DA6D84B58196b98f2e7"),
 316		BootCoordinator: ethCommon.HexToAddress("0xE39fEc6224708f0772D2A74fd3f9055A90E0A9f2"),
 317		DefaultSlotSetBid: [6]*big.Int{
 318			big.NewInt(1000), big.NewInt(1100), big.NewInt(1200),
 319			big.NewInt(1300), big.NewInt(1400), big.NewInt(1500)},
 320		ClosedAuctionSlots: 2,
 321		OpenAuctionSlots:   4320,
 322		AllocationRatio:    [3]uint16{4000, 4000, 2000},
 323		Outbidding:         1000,
 324		SlotDeadline:       20,
 325	}
 326	wDelayerConstants := &common.WDelayerConstants{
 327		MaxWithdrawalDelay:   60 * 60 * 24 * 7 * 2,  // 2 weeks
 328		MaxEmergencyModeTime: 60 * 60 * 24 * 7 * 26, // 26 weeks
 329		HermezRollup:         auctionConstants.HermezRollup,
 330	}
 331	wDelayerVariables := &common.WDelayerVariables{
 332		HermezGovernanceDAOAddress: ethCommon.HexToAddress("0xcfD0d163AE6432a72682323E2C3A5a69e6B37D12"),
 333		WhiteHackGroupAddress:      ethCommon.HexToAddress("0x2730700932a4FDB97B9268A3Ca29f97Ea5fd7EA0"),
 334		HermezKeeperAddress:        ethCommon.HexToAddress("0x92aAD86176dC0f0046FE85Ed5dA008a828bE3868"),
 335		WithdrawalDelay:            60,
 336		EmergencyModeStartingTime:  0,
 337		EmergencyMode:              false,
 338	}
 339	return &ClientSetup{
 340		RollupConstants:   rollupConstants,
 341		RollupVariables:   rollupVariables,
 342		AuctionConstants:  auctionConstants,
 343		AuctionVariables:  auctionVariables,
 344		WDelayerConstants: wDelayerConstants,
 345		WDelayerVariables: wDelayerVariables,
 346	}
 347}
 348
 349// Timer is an interface to simulate a source of time, useful to advance time
 350// virtually.
 351type Timer interface {
 352	Time() int64
 353}
 354
 355// type forgeBatchArgs struct {
 356// 	ethTx     *types.Transaction
 357// 	blockNum  int64
 358// 	blockHash ethCommon.Hash
 359// }
 360
 361type batch struct {
 362	ForgeBatchArgs eth.RollupForgeBatchArgs
 363	Sender         ethCommon.Address
 364}
 365
 366// Client implements the eth.ClientInterface interface, allowing to manipulate the
 367// values for testing, working with deterministic results.
 368type Client struct {
 369	rw                *sync.RWMutex
 370	log               bool
 371	addr              *ethCommon.Address
 372	rollupConstants   *common.RollupConstants
 373	auctionConstants  *common.AuctionConstants
 374	wDelayerConstants *common.WDelayerConstants
 375	blocks            map[int64]*Block
 376	// state            state
 377	blockNum    int64 // last mined block num
 378	maxBlockNum int64 // highest block num calculated
 379	timer       Timer
 380	hasher      hasher
 381
 382	forgeBatchArgsPending map[ethCommon.Hash]*batch
 383	forgeBatchArgs        map[ethCommon.Hash]*batch
 384}
 385
 386// NewClient returns a new test Client that implements the eth.IClient
 387// interface, at the given initialBlockNumber.
 388func NewClient(l bool, timer Timer, addr *ethCommon.Address, setup *ClientSetup) *Client {
 389	blocks := make(map[int64]*Block)
 390	blockNum := int64(0)
 391
 392	hasher := hasher{}
 393	// Add ethereum genesis block
 394	mapL1TxQueue := make(map[int64]*eth.QueueStruct)
 395	mapL1TxQueue[0] = eth.NewQueueStruct()
 396	mapL1TxQueue[1] = eth.NewQueueStruct()
 397	blockCurrent := &Block{
 398		Rollup: &RollupBlock{
 399			State: eth.RollupState{
 400				StateRoot:        big.NewInt(0),
 401				ExitRoots:        make([]*big.Int, 1),
 402				ExitNullifierMap: make(map[int64]map[int64]bool),
 403				// TokenID = 0 is ETH.  Set first entry in TokenList with 0x0 address for ETH.
 404				TokenList:              []ethCommon.Address{{}},
 405				TokenMap:               make(map[ethCommon.Address]bool),
 406				MapL1TxQueue:           mapL1TxQueue,
 407				LastL1L2Batch:          0,
 408				CurrentToForgeL1TxsNum: 0,
 409				LastToForgeL1TxsNum:    1,
 410				CurrentIdx:             0,
 411			},
 412			Vars:      *setup.RollupVariables,
 413			Txs:       make(map[ethCommon.Hash]*types.Transaction),
 414			Events:    eth.NewRollupEvents(),
 415			Constants: setup.RollupConstants,
 416		},
 417		Auction: &AuctionBlock{
 418			State: eth.AuctionState{
 419				Slots:           make(map[int64]*eth.SlotState),
 420				PendingBalances: make(map[ethCommon.Address]*big.Int),
 421				Coordinators:    make(map[ethCommon.Address]*eth.Coordinator),
 422			},
 423			Vars:      *setup.AuctionVariables,
 424			Txs:       make(map[ethCommon.Hash]*types.Transaction),
 425			Events:    eth.NewAuctionEvents(),
 426			Constants: setup.AuctionConstants,
 427		},
 428		WDelayer: &WDelayerBlock{
 429			// State: TODO
 430			Vars:      *setup.WDelayerVariables,
 431			Txs:       make(map[ethCommon.Hash]*types.Transaction),
 432			Events:    eth.NewWDelayerEvents(),
 433			Constants: setup.WDelayerConstants,
 434		},
 435		Eth: &EthereumBlock{
 436			BlockNum:   blockNum,
 437			Time:       timer.Time(),
 438			Hash:       hasher.Next(),
 439			ParentHash: ethCommon.Hash{},
 440			Tokens:     make(map[ethCommon.Address]eth.ERC20Consts),
 441		},
 442	}
 443	blockCurrent.Rollup.Eth = blockCurrent.Eth
 444	blockCurrent.Auction.Eth = blockCurrent.Eth
 445	blocks[blockNum] = blockCurrent
 446	blockNext := blockCurrent.Next()
 447	blocks[blockNum+1] = blockNext
 448
 449	c := Client{
 450		rw:                    &sync.RWMutex{},
 451		log:                   l,
 452		addr:                  addr,
 453		rollupConstants:       setup.RollupConstants,
 454		auctionConstants:      setup.AuctionConstants,
 455		wDelayerConstants:     setup.WDelayerConstants,
 456		blocks:                blocks,
 457		timer:                 timer,
 458		hasher:                hasher,
 459		forgeBatchArgsPending: make(map[ethCommon.Hash]*batch),
 460		forgeBatchArgs:        make(map[ethCommon.Hash]*batch),
 461		blockNum:              blockNum,
 462		maxBlockNum:           blockNum,
 463	}
 464
 465	for i := int64(1); i < setup.AuctionConstants.GenesisBlockNum+1; i++ {
 466		c.CtlMineBlock()
 467	}
 468
 469	return &c
 470}
 471
 472//
 473// Mock Control
 474//
 475
 476func (c *Client) setNextBlock(block *Block) {
 477	c.blocks[c.blockNum+1] = block
 478}
 479
 480func (c *Client) revertIfErr(err error, block *Block) {
 481	if err != nil {
 482		log.Infow("TestClient revert", "block", block.Eth.BlockNum, "err", err)
 483		c.setNextBlock(block)
 484	}
 485}
 486
 487// Debugf calls log.Debugf if c.log is true
 488func (c *Client) Debugf(template string, args ...interface{}) {
 489	if c.log {
 490		log.Debugf(template, args...)
 491	}
 492}
 493
 494// Debugw calls log.Debugw if c.log is true
 495func (c *Client) Debugw(template string, kv ...interface{}) {
 496	if c.log {
 497		log.Debugw(template, kv...)
 498	}
 499}
 500
 501type hasher struct {
 502	counter uint64
 503}
 504
 505// Next returns the next hash
 506func (h *hasher) Next() ethCommon.Hash {
 507	var hash ethCommon.Hash
 508	binary.LittleEndian.PutUint64(hash[:], h.counter)
 509	h.counter++
 510	return hash
 511}
 512
 513func (c *Client) nextBlock() *Block {
 514	return c.blocks[c.blockNum+1]
 515}
 516
 517func (c *Client) currentBlock() *Block {
 518	return c.blocks[c.blockNum]
 519}
 520
 521// CtlSetAddr sets the address of the client
 522func (c *Client) CtlSetAddr(addr ethCommon.Address) {
 523	c.addr = &addr
 524}
 525
 526// CtlMineBlock moves one block forward
 527func (c *Client) CtlMineBlock() {
 528	c.rw.Lock()
 529	defer c.rw.Unlock()
 530
 531	blockCurrent := c.nextBlock()
 532	c.blockNum++
 533	c.maxBlockNum = c.blockNum
 534	blockCurrent.Eth.Time = c.timer.Time()
 535	blockCurrent.Eth.Hash = c.hasher.Next()
 536	for ethTxHash, forgeBatchArgs := range c.forgeBatchArgsPending {
 537		c.forgeBatchArgs[ethTxHash] = forgeBatchArgs
 538	}
 539	c.forgeBatchArgsPending = make(map[ethCommon.Hash]*batch)
 540
 541	blockNext := blockCurrent.Next()
 542	c.blocks[c.blockNum+1] = blockNext
 543	c.Debugw("TestClient mined block", "blockNum", c.blockNum)
 544}
 545
 546// CtlRollback discards the last mined block.  Use this to replace a mined
 547// block to simulate reorgs.
 548func (c *Client) CtlRollback() {
 549	c.rw.Lock()
 550	defer c.rw.Unlock()
 551
 552	if c.blockNum == 0 {
 553		panic("Can't rollback at blockNum = 0")
 554	}
 555	delete(c.blocks, c.blockNum+1) // delete next block
 556	delete(c.blocks, c.blockNum)   // delete current block
 557	c.blockNum--
 558	blockCurrent := c.blocks[c.blockNum]
 559	blockNext := blockCurrent.Next()
 560	c.blocks[c.blockNum+1] = blockNext
 561}
 562
 563//
 564// Ethereum
 565//
 566
 567// CtlLastBlock returns the last blockNum without checks
 568func (c *Client) CtlLastBlock() *common.Block {
 569	c.rw.RLock()
 570	defer c.rw.RUnlock()
 571
 572	block := c.blocks[c.blockNum]
 573	return &common.Block{
 574		Num:        c.blockNum,
 575		Timestamp:  time.Unix(block.Eth.Time, 0),
 576		Hash:       block.Eth.Hash,
 577		ParentHash: block.Eth.ParentHash,
 578	}
 579}
 580
 581// CtlLastForgedBatch returns the last batchNum without checks
 582func (c *Client) CtlLastForgedBatch() int64 {
 583	c.rw.RLock()
 584	defer c.rw.RUnlock()
 585
 586	currentBlock := c.currentBlock()
 587	e := currentBlock.Rollup
 588	return int64(len(e.State.ExitRoots)) - 1
 589}
 590
 591// EthLastBlock returns the last blockNum
 592func (c *Client) EthLastBlock() (int64, error) {
 593	c.rw.RLock()
 594	defer c.rw.RUnlock()
 595
 596	if c.blockNum < c.maxBlockNum {
 597		panic("blockNum has decreased.  " +
 598			"After a rollback you must mine to reach the same or higher blockNum")
 599	}
 600	return c.blockNum, nil
 601}
 602
 603// EthTransactionReceipt returns the transaction receipt of the given txHash
 604func (c *Client) EthTransactionReceipt(ctx context.Context, txHash ethCommon.Hash) (*types.Receipt, error) {
 605	c.rw.RLock()
 606	defer c.rw.RUnlock()
 607
 608	for i := int64(0); i < c.blockNum; i++ {
 609		b := c.blocks[i]
 610		_, ok := b.Rollup.Txs[txHash]
 611		if !ok {
 612			_, ok = b.Auction.Txs[txHash]
 613		}
 614		if ok {
 615			return &types.Receipt{
 616				TxHash:      txHash,
 617				Status:      types.ReceiptStatusSuccessful,
 618				BlockHash:   b.Eth.Hash,
 619				BlockNumber: big.NewInt(b.Eth.BlockNum),
 620			}, nil
 621		}
 622	}
 623
 624	return nil, nil
 625}
 626
 627// CtlAddERC20 adds an ERC20 token to the blockchain.
 628func (c *Client) CtlAddERC20(tokenAddr ethCommon.Address, constants eth.ERC20Consts) {
 629	nextBlock := c.nextBlock()
 630	e := nextBlock.Eth
 631	e.Tokens[tokenAddr] = constants
 632}
 633
 634// EthERC20Consts returns the constants defined for a particular ERC20 Token instance.
 635func (c *Client) EthERC20Consts(tokenAddr ethCommon.Address) (*eth.ERC20Consts, error) {
 636	currentBlock := c.currentBlock()
 637	e := currentBlock.Eth
 638	if constants, ok := e.Tokens[tokenAddr]; ok {
 639		return &constants, nil
 640	}
 641	return nil, tracerr.Wrap(fmt.Errorf("tokenAddr not found"))
 642}
 643
 644// func newHeader(number *big.Int) *types.Header {
 645// 	return &types.Header{
 646// 		Number: number,
 647// 		Time:   uint64(number.Int64()),
 648// 	}
 649// }
 650
 651// EthHeaderByNumber returns the *types.Header for the given block number in a
 652// deterministic way.
 653// func (c *Client) EthHeaderByNumber(ctx context.Context, number *big.Int) (*types.Header, error) {
 654// 	return newHeader(number), nil
 655// }
 656
 657// EthBlockByNumber returns the *common.Block for the given block number in a
 658// deterministic way.  If number == -1, the latests known block is returned.
 659func (c *Client) EthBlockByNumber(ctx context.Context, blockNum int64) (*common.Block, error) {
 660	c.rw.RLock()
 661	defer c.rw.RUnlock()
 662
 663	if blockNum > c.blockNum {
 664		return nil, ethereum.NotFound
 665	}
 666	if blockNum == -1 {
 667		blockNum = c.blockNum
 668	}
 669	block := c.blocks[blockNum]
 670	return &common.Block{
 671		Num:        blockNum,
 672		Timestamp:  time.Unix(block.Eth.Time, 0),
 673		Hash:       block.Eth.Hash,
 674		ParentHash: block.Eth.ParentHash,
 675	}, nil
 676}
 677
 678// EthAddress returns the ethereum address of the account loaded into the Client
 679func (c *Client) EthAddress() (*ethCommon.Address, error) {
 680	if c.addr == nil {
 681		return nil, tracerr.Wrap(eth.ErrAccountNil)
 682	}
 683	return c.addr, nil
 684}
 685
 686var errTODO = fmt.Errorf("TODO: Not implemented yet")
 687
 688//
 689// Rollup
 690//
 691
 692// CtlAddL1TxUser adds an L1TxUser to the L1UserTxs queue of the Rollup
 693// func (c *Client) CtlAddL1TxUser(l1Tx *common.L1Tx) {
 694// 	c.rw.Lock()
 695// 	defer c.rw.Unlock()
 696//
 697// 	nextBlock := c.nextBlock()
 698// 	r := nextBlock.Rollup
 699// 	queue := r.State.MapL1TxQueue[r.State.LastToForgeL1TxsNum]
 700// 	if len(queue.L1TxQueue) >= eth.RollupConstMaxL1UserTx {
 701// 		r.State.LastToForgeL1TxsNum++
 702// 		r.State.MapL1TxQueue[r.State.LastToForgeL1TxsNum] = eth.NewQueueStruct()
 703// 		queue = r.State.MapL1TxQueue[r.State.LastToForgeL1TxsNum]
 704// 	}
 705// 	if int64(l1Tx.FromIdx) > r.State.CurrentIdx {
 706// 		panic("l1Tx.FromIdx > r.State.CurrentIdx")
 707// 	}
 708// 	if int(l1Tx.TokenID)+1 > len(r.State.TokenList) {
 709// 		panic("l1Tx.TokenID + 1 > len(r.State.TokenList)")
 710// 	}
 711// 	queue.L1TxQueue = append(queue.L1TxQueue, *l1Tx)
 712// 	r.Events.L1UserTx = append(r.Events.L1UserTx, eth.RollupEventL1UserTx{
 713// 		L1Tx:            *l1Tx,
 714// 		ToForgeL1TxsNum: r.State.LastToForgeL1TxsNum,
 715// 		Position:        len(queue.L1TxQueue) - 1,
 716// 	})
 717// }
 718
 719// RollupL1UserTxERC20Permit is the interface to call the smart contract function
 720func (c *Client) RollupL1UserTxERC20Permit(fromBJJ *babyjub.PublicKey, fromIdx int64, loadAmount *big.Int, amount *big.Int, tokenID uint32, toIdx int64, deadline *big.Int) (tx *types.Transaction, err error) {
 721	log.Error("TODO")
 722	return nil, tracerr.Wrap(errTODO)
 723}
 724
 725// RollupL1UserTxERC20ETH sends an L1UserTx to the Rollup.
 726func (c *Client) RollupL1UserTxERC20ETH(
 727	fromBJJ *babyjub.PublicKey,
 728	fromIdx int64,
 729	loadAmount *big.Int,
 730	amount *big.Int,
 731	tokenID uint32,
 732	toIdx int64,
 733) (tx *types.Transaction, err error) {
 734	c.rw.Lock()
 735	defer c.rw.Unlock()
 736	cpy := c.nextBlock().copy()
 737	defer func() { c.revertIfErr(err, cpy) }()
 738
 739	_, err = common.NewFloat16(amount)
 740	if err != nil {
 741		return nil, tracerr.Wrap(err)
 742	}
 743	_, err = common.NewFloat16(loadAmount)
 744	if err != nil {
 745		return nil, tracerr.Wrap(err)
 746	}
 747
 748	nextBlock := c.nextBlock()
 749	r := nextBlock.Rollup
 750	queue := r.State.MapL1TxQueue[r.State.LastToForgeL1TxsNum]
 751	if len(queue.L1TxQueue) >= common.RollupConstMaxL1UserTx {
 752		r.State.LastToForgeL1TxsNum++
 753		r.State.MapL1TxQueue[r.State.LastToForgeL1TxsNum] = eth.NewQueueStruct()
 754		queue = r.State.MapL1TxQueue[r.State.LastToForgeL1TxsNum]
 755	}
 756	if fromIdx > r.State.CurrentIdx {
 757		panic("l1Tx.FromIdx > r.State.CurrentIdx")
 758	}
 759	if int(tokenID)+1 > len(r.State.TokenList) {
 760		panic("l1Tx.TokenID + 1 > len(r.State.TokenList)")
 761	}
 762	toForgeL1TxsNum := r.State.LastToForgeL1TxsNum
 763	l1Tx, err := common.NewL1Tx(&common.L1Tx{
 764		FromIdx:         common.Idx(fromIdx),
 765		FromEthAddr:     *c.addr,
 766		FromBJJ:         fromBJJ,
 767		Amount:          amount,
 768		LoadAmount:      loadAmount,
 769		TokenID:         common.TokenID(tokenID),
 770		ToIdx:           common.Idx(toIdx),
 771		ToForgeL1TxsNum: &toForgeL1TxsNum,
 772		Position:        len(queue.L1TxQueue),
 773		UserOrigin:      true,
 774	})
 775	if err != nil {
 776		return nil, tracerr.Wrap(err)
 777	}
 778
 779	queue.L1TxQueue = append(queue.L1TxQueue, *l1Tx)
 780	r.Events.L1UserTx = append(r.Events.L1UserTx, eth.RollupEventL1UserTx{
 781		L1UserTx: *l1Tx,
 782	})
 783	return r.addTransaction(c.newTransaction("l1UserTxERC20ETH", l1Tx)), nil
 784}
 785
 786// RollupL1UserTxERC777 is the interface to call the smart contract function
 787// func (c *Client) RollupL1UserTxERC777(fromBJJ *babyjub.PublicKey, fromIdx int64, loadAmount *big.Int, amount *big.Int, tokenID uint32, toIdx int64) (*types.Transaction, error) {
 788// 	log.Error("TODO")
 789// 	return nil, errTODO
 790// }
 791
 792// RollupRegisterTokensCount is the interface to call the smart contract function
 793func (c *Client) RollupRegisterTokensCount() (*big.Int, error) {
 794	log.Error("TODO")
 795	return nil, tracerr.Wrap(errTODO)
 796}
 797
 798// RollupLastForgedBatch is the interface to call the smart contract function
 799func (c *Client) RollupLastForgedBatch() (int64, error) {
 800	c.rw.RLock()
 801	defer c.rw.RUnlock()
 802
 803	currentBlock := c.currentBlock()
 804	e := currentBlock.Rollup
 805	return int64(len(e.State.ExitRoots)) - 1, nil
 806}
 807
 808// RollupWithdrawCircuit is the interface to call the smart contract function
 809func (c *Client) RollupWithdrawCircuit(proofA, proofC [2]*big.Int, proofB [2][2]*big.Int, tokenID uint32, numExitRoot, idx int64, amount *big.Int, instantWithdraw bool) (*types.Transaction, error) {
 810	log.Error("TODO")
 811	return nil, tracerr.Wrap(errTODO)
 812}
 813
 814// RollupWithdrawMerkleProof is the interface to call the smart contract function
 815func (c *Client) RollupWithdrawMerkleProof(babyPubKey *babyjub.PublicKey, tokenID uint32, numExitRoot, idx int64, amount *big.Int, siblings []*big.Int, instantWithdraw bool) (tx *types.Transaction, err error) {
 816	c.rw.Lock()
 817	defer c.rw.Unlock()
 818	cpy := c.nextBlock().copy()
 819	defer func() { c.revertIfErr(err, cpy) }()
 820
 821	nextBlock := c.nextBlock()
 822	r := nextBlock.Rollup
 823
 824	if int(numExitRoot) >= len(r.State.ExitRoots) {
 825		return nil, tracerr.Wrap(fmt.Errorf("numExitRoot >= len(r.State.ExitRoots)"))
 826	}
 827	if _, ok := r.State.ExitNullifierMap[numExitRoot][idx]; ok {
 828		return nil, tracerr.Wrap(fmt.Errorf("exit already withdrawn"))
 829	}
 830	r.State.ExitNullifierMap[numExitRoot][idx] = true
 831
 832	type data struct {
 833		BabyPubKey      *babyjub.PublicKey
 834		TokenID         uint32
 835		NumExitRoot     int64
 836		Idx             int64
 837		Amount          *big.Int
 838		Siblings        []*big.Int
 839		InstantWithdraw bool
 840	}
 841	tx = r.addTransaction(c.newTransaction("withdrawMerkleProof", data{
 842		BabyPubKey:      babyPubKey,
 843		TokenID:         tokenID,
 844		NumExitRoot:     numExitRoot,
 845		Idx:             idx,
 846		Amount:          amount,
 847		Siblings:        siblings,
 848		InstantWithdraw: instantWithdraw,
 849	}))
 850	r.Events.Withdraw = append(r.Events.Withdraw, eth.RollupEventWithdraw{
 851		Idx:             uint64(idx),
 852		NumExitRoot:     uint64(numExitRoot),
 853		InstantWithdraw: instantWithdraw,
 854		TxHash:          tx.Hash(),
 855	})
 856
 857	if !instantWithdraw {
 858		w := nextBlock.WDelayer
 859		w.deposit(tx.Hash(), *c.addr, r.State.TokenList[int(tokenID)], amount)
 860	}
 861	return tx, nil
 862}
 863
 864type transactionData struct {
 865	Name  string
 866	Value interface{}
 867}
 868
 869func (c *Client) newTransaction(name string, value interface{}) *types.Transaction {
 870	eth := c.nextBlock().Eth
 871	nonce := eth.Nonce
 872	eth.Nonce++
 873	data, err := json.Marshal(transactionData{name, value})
 874	if err != nil {
 875		panic(err)
 876	}
 877	return types.NewTransaction(nonce, ethCommon.Address{}, nil, 0, nil,
 878		data)
 879}
 880
 881// RollupForgeBatch is the interface to call the smart contract function
 882func (c *Client) RollupForgeBatch(args *eth.RollupForgeBatchArgs) (tx *types.Transaction, err error) {
 883	c.rw.Lock()
 884	defer c.rw.Unlock()
 885	cpy := c.nextBlock().copy()
 886	defer func() { c.revertIfErr(err, cpy) }()
 887	if c.addr == nil {
 888		return nil, tracerr.Wrap(eth.ErrAccountNil)
 889	}
 890
 891	a := c.nextBlock().Auction
 892	ok, err := a.canForge(*c.addr, a.Eth.BlockNum)
 893	if err != nil {
 894		return nil, tracerr.Wrap(err)
 895	}
 896	if !ok {
 897		return nil, tracerr.Wrap(fmt.Errorf(common.AuctionErrMsgCannotForge))
 898	}
 899
 900	// TODO: Verify proof
 901
 902	// Auction
 903	err = a.forge(*c.addr)
 904	if err != nil {
 905		return nil, tracerr.Wrap(err)
 906	}
 907
 908	// TODO: If successful, store the tx in a successful array.
 909	// TODO: If failed, store the tx in a failed array.
 910	// TODO: Add method to move the tx to another block, reapply it there, and possibly go from successful to failed.
 911
 912	return c.addBatch(args)
 913}
 914
 915// CtlAddBatch adds forged batch to the Rollup, without checking any ZKProof
 916func (c *Client) CtlAddBatch(args *eth.RollupForgeBatchArgs) {
 917	c.rw.Lock()
 918	defer c.rw.Unlock()
 919
 920	if _, err := c.addBatch(args); err != nil {
 921		panic(err)
 922	}
 923}
 924
 925func (c *Client) addBatch(args *eth.RollupForgeBatchArgs) (*types.Transaction, error) {
 926	nextBlock := c.nextBlock()
 927	r := nextBlock.Rollup
 928	r.State.StateRoot = args.NewStRoot
 929	if args.NewLastIdx < r.State.CurrentIdx {
 930		return nil, tracerr.Wrap(fmt.Errorf("args.NewLastIdx < r.State.CurrentIdx"))
 931	}
 932	r.State.CurrentIdx = args.NewLastIdx
 933	r.State.ExitNullifierMap[int64(len(r.State.ExitRoots))] = make(map[int64]bool)
 934	r.State.ExitRoots = append(r.State.ExitRoots, args.NewExitRoot)
 935	if args.L1Batch {
 936		r.State.CurrentToForgeL1TxsNum++
 937		if r.State.CurrentToForgeL1TxsNum == r.State.LastToForgeL1TxsNum {
 938			r.State.LastToForgeL1TxsNum++
 939			r.State.MapL1TxQueue[r.State.LastToForgeL1TxsNum] = eth.NewQueueStruct()
 940		}
 941	}
 942	ethTx := r.addTransaction(c.newTransaction("forgebatch", args))
 943	c.forgeBatchArgsPending[ethTx.Hash()] = &batch{*args, *c.addr}
 944	r.Events.ForgeBatch = append(r.Events.ForgeBatch, eth.RollupEventForgeBatch{
 945		BatchNum:  int64(len(r.State.ExitRoots)) - 1,
 946		EthTxHash: ethTx.Hash(),
 947	})
 948
 949	return ethTx, nil
 950}
 951
 952// RollupAddTokenSimple is a wrapper around RollupAddToken that automatically
 953// sets `deadlie`.
 954func (c *Client) RollupAddTokenSimple(tokenAddress ethCommon.Address, feeAddToken *big.Int) (tx *types.Transaction, err error) {
 955	return c.RollupAddToken(tokenAddress, feeAddToken, big.NewInt(9999)) //nolint:gomnd
 956}
 957
 958// RollupAddToken is the interface to call the smart contract function
 959func (c *Client) RollupAddToken(tokenAddress ethCommon.Address, feeAddToken *big.Int,
 960	deadline *big.Int) (tx *types.Transaction, err error) {
 961	c.rw.Lock()
 962	defer c.rw.Unlock()
 963	cpy := c.nextBlock().copy()
 964	defer func() { c.revertIfErr(err, cpy) }()
 965	if c.addr == nil {
 966		return nil, tracerr.Wrap(eth.ErrAccountNil)
 967	}
 968
 969	nextBlock := c.nextBlock()
 970	r := nextBlock.Rollup
 971	if _, ok := r.State.TokenMap[tokenAddress]; ok {
 972		return nil, tracerr.Wrap(fmt.Errorf("Token %v already registered", tokenAddress))
 973	}
 974	if feeAddToken.Cmp(r.Vars.FeeAddToken) != 0 {
 975		return nil, tracerr.Wrap(fmt.Errorf("Expected fee: %v but got: %v", r.Vars.FeeAddToken, feeAddToken))
 976	}
 977
 978	r.State.TokenMap[tokenAddress] = true
 979	r.State.TokenList = append(r.State.TokenList, tokenAddress)
 980	r.Events.AddToken = append(r.Events.AddToken, eth.RollupEventAddToken{TokenAddress: tokenAddress,
 981		TokenID: uint32(len(r.State.TokenList) - 1)})
 982	return r.addTransaction(c.newTransaction("addtoken", tokenAddress)), nil
 983}
 984
 985// RollupGetCurrentTokens is the interface to call the smart contract function
 986func (c *Client) RollupGetCurrentTokens() (*big.Int, error) {
 987	c.rw.RLock()
 988	defer c.rw.RUnlock()
 989
 990	log.Error("TODO")
 991	return nil, tracerr.Wrap(errTODO)
 992}
 993
 994// RollupUpdateForgeL1L2BatchTimeout is the interface to call the smart contract function
 995func (c *Client) RollupUpdateForgeL1L2BatchTimeout(newForgeL1Timeout int64) (tx *types.Transaction, err error) {
 996	c.rw.Lock()
 997	defer c.rw.Unlock()
 998	cpy := c.nextBlock().copy()
 999	defer func() { c.revertIfErr(err, cpy) }()
1000	if c.addr == nil {
1001		return nil, tracerr.Wrap(eth.ErrAccountNil)
1002	}
1003
1004	nextBlock := c.nextBlock()
1005	r := nextBlock.Rollup
1006	r.Vars.ForgeL1L2BatchTimeout = newForgeL1Timeout
1007	r.Events.UpdateForgeL1L2BatchTimeout = append(r.Events.UpdateForgeL1L2BatchTimeout,
1008		eth.RollupEventUpdateForgeL1L2BatchTimeout{NewForgeL1L2BatchTimeout: newForgeL1Timeout})
1009
1010	return r.addTransaction(c.newTransaction("updateForgeL1L2BatchTimeout", newForgeL1Timeout)), nil
1011}
1012
1013// RollupUpdateFeeAddToken is the interface to call the smart contract function
1014func (c *Client) RollupUpdateFeeAddToken(newFeeAddToken *big.Int) (tx *types.Transaction, err error) {
1015	c.rw.Lock()
1016	defer c.rw.Unlock()
1017	cpy := c.nextBlock().copy()
1018	defer func() { c.revertIfErr(err, cpy) }()
1019	if c.addr == nil {
1020		return nil, tracerr.Wrap(eth.ErrAccountNil)
1021	}
1022
1023	log.Error("TODO")
1024	return nil, tracerr.Wrap(errTODO)
1025}
1026
1027// RollupUpdateTokensHEZ is the interface to call the smart contract function
1028// func (c *Client) RollupUpdateTokensHEZ(newTokenHEZ ethCommon.Address) (tx *types.Transaction, err error) {
1029// 	c.rw.Lock()
1030// 	defer c.rw.Unlock()
1031// 	cpy := c.nextBlock().copy()
1032// 	defer func() { c.revertIfErr(err, cpy) }()
1033//
1034// 	log.Error("TODO")
1035// 	return nil, errTODO
1036// }
1037
1038// RollupUpdateGovernance is the interface to call the smart contract function
1039// func (c *Client) RollupUpdateGovernance() (*types.Transaction, error) { // TODO (Not defined in Hermez.sol)
1040// 	return nil, errTODO
1041// }
1042
1043// RollupConstants returns the Constants of the Rollup Smart Contract
1044func (c *Client) RollupConstants() (*common.RollupConstants, error) {
1045	c.rw.RLock()
1046	defer c.rw.RUnlock()
1047
1048	return c.rollupConstants, nil
1049}
1050
1051// RollupEventsByBlock returns the events in a block that happened in the Rollup Smart Contract
1052func (c *Client) RollupEventsByBlock(blockNum int64) (*eth.RollupEvents, *ethCommon.Hash, error) {
1053	c.rw.RLock()
1054	defer c.rw.RUnlock()
1055
1056	block, ok := c.blocks[blockNum]
1057	if !ok {
1058		return nil, nil, tracerr.Wrap(fmt.Errorf("Block %v doesn't exist", blockNum))
1059	}
1060	return &block.Rollup.Events, &block.Eth.Hash, nil
1061}
1062
1063// RollupForgeBatchArgs returns the arguments used in a ForgeBatch call in the Rollup Smart Contract in the given transaction
1064func (c *Client) RollupForgeBatchArgs(ethTxHash ethCommon.Hash) (*eth.RollupForgeBatchArgs, *ethCommon.Address, error) {
1065	c.rw.RLock()
1066	defer c.rw.RUnlock()
1067
1068	batch, ok := c.forgeBatchArgs[ethTxHash]
1069	if !ok {
1070		return nil, nil, tracerr.Wrap(fmt.Errorf("transaction not found"))
1071	}
1072	return &batch.ForgeBatchArgs, &batch.Sender, nil
1073}
1074
1075//
1076// Auction
1077//
1078
1079// AuctionSetSlotDeadline is the interface to call the smart contract function
1080func (c *Client) AuctionSetSlotDeadline(newDeadline uint8) (tx *types.Transaction, err error) {
1081	c.rw.Lock()
1082	defer c.rw.Unlock()
1083	cpy := c.nextBlock().copy()
1084	defer func() { c.revertIfErr(err, cpy) }()
1085	if c.addr == nil {
1086		return nil, tracerr.Wrap(eth.ErrAccountNil)
1087	}
1088
1089	log.Error("TODO")
1090	return nil, tracerr.Wrap(errTODO)
1091}
1092
1093// AuctionGetSlotDeadline is the interface to call the smart contract function
1094func (c *Client) AuctionGetSlotDeadline() (uint8, error) {
1095	c.rw.RLock()
1096	defer c.rw.RUnlock()
1097
1098	log.Error("TODO")
1099	return 0, tracerr.Wrap(errTODO)
1100}
1101
1102// AuctionSetOpenAuctionSlots is the interface to call the smart contract function
1103func (c *Client) AuctionSetOpenAuctionSlots(newOpenAuctionSlots uint16) (tx *types.Transaction, err error) {
1104	c.rw.Lock()
1105	defer c.rw.Unlock()
1106	cpy := c.nextBlock().copy()
1107	defer func() { c.revertIfErr(err, cpy) }()
1108	if c.addr == nil {
1109		return nil, tracerr.Wrap(eth.ErrAccountNil)
1110	}
1111
1112	nextBlock := c.nextBlock()
1113	a := nextBlock.Auction
1114	a.Vars.OpenAuctionSlots = newOpenAuctionSlots
1115	a.Events.NewOpenAuctionSlots = append(a.Events.NewOpenAuctionSlots,
1116		eth.AuctionEventNewOpenAuctionSlots{NewOpenAuctionSlots: newOpenAuctionSlots})
1117
1118	return a.addTransaction(c.newTransaction("setOpenAuctionSlots", newOpenAuctionSlots)), nil
1119}
1120
1121// AuctionGetOpenAuctionSlots is the interface to call the smart contract function
1122func (c *Client) AuctionGetOpenAuctionSlots() (uint16, error) {
1123	c.rw.RLock()
1124	defer c.rw.RUnlock()
1125
1126	log.Error("TODO")
1127	return 0, tracerr.Wrap(errTODO)
1128}
1129
1130// AuctionSetClosedAuctionSlots is the interface to call the smart contract function
1131func (c *Client) AuctionSetClosedAuctionSlots(newClosedAuctionSlots uint16) (tx *types.Transaction, err error) {
1132	c.rw.Lock()
1133	defer c.rw.Unlock()
1134	cpy := c.nextBlock().copy()
1135	defer func() { c.revertIfErr(err, cpy) }()
1136	if c.addr == nil {
1137		return nil, tracerr.Wrap(eth.ErrAccountNil)
1138	}
1139
1140	log.Error("TODO")
1141	return nil, tracerr.Wrap(errTODO)
1142}
1143
1144// AuctionGetClosedAuctionSlots is the interface to call the smart contract function
1145func (c *Client) AuctionGetClosedAuctionSlots() (uint16, error) {
1146	c.rw.RLock()
1147	defer c.rw.RUnlock()
1148
1149	log.Error("TODO")
1150	return 0, tracerr.Wrap(errTODO)
1151}
1152
1153// AuctionSetOutbidding is the interface to call the smart contract function
1154func (c *Client) AuctionSetOutbidding(newOutbidding uint16) (tx *types.Transaction, err error) {
1155	c.rw.Lock()
1156	defer c.rw.Unlock()
1157	cpy := c.nextBlock().copy()
1158	defer func() { c.revertIfErr(err, cpy) }()
1159	if c.addr == nil {
1160		return nil, tracerr.Wrap(eth.ErrAccountNil)
1161	}
1162
1163	log.Error("TODO")
1164	return nil, tracerr.Wrap(errTODO)
1165}
1166
1167// AuctionGetOutbidding is the interface to call the smart contract function
1168func (c *Client) AuctionGetOutbidding() (uint16, error) {
1169	c.rw.RLock()
1170	defer c.rw.RUnlock()
1171
1172	log.Error("TODO")
1173	return 0, tracerr.Wrap(errTODO)
1174}
1175
1176// AuctionSetAllocationRatio is the interface to call the smart contract function
1177func (c *Client) AuctionSetAllocationRatio(newAllocationRatio [3]uint16) (tx *types.Transaction, err error) {
1178	c.rw.Lock()
1179	defer c.rw.Unlock()
1180	cpy := c.nextBlock().copy()
1181	defer func() { c.revertIfErr(err, cpy) }()
1182	if c.addr == nil {
1183		return nil, tracerr.Wrap(eth.ErrAccountNil)
1184	}
1185
1186	log.Error("TODO")
1187	return nil, tracerr.Wrap(errTODO)
1188}
1189
1190// AuctionGetAllocationRatio is the interface to call the smart contract function
1191func (c *Client) AuctionGetAllocationRatio() ([3]uint16, error) {
1192	c.rw.RLock()
1193	defer c.rw.RUnlock()
1194
1195	log.Error("TODO")
1196	return [3]uint16{}, tracerr.Wrap(errTODO)
1197}
1198
1199// AuctionSetDonationAddress is the interface to call the smart contract function
1200func (c *Client) AuctionSetDonationAddress(newDonationAddress ethCommon.Address) (tx *types.Transaction, err error) {
1201	c.rw.Lock()
1202	defer c.rw.Unlock()
1203	cpy := c.nextBlock().copy()
1204	defer func() { c.revertIfErr(err, cpy) }()
1205	if c.addr == nil {
1206		return nil, tracerr.Wrap(eth.ErrAccountNil)
1207	}
1208
1209	log.Error("TODO")
1210	return nil, tracerr.Wrap(errTODO)
1211}
1212
1213// AuctionGetDonationAddress is the interface to call the smart contract function
1214func (c *Client) AuctionGetDonationAddress() (*ethCommon.Address, error) {
1215	c.rw.RLock()
1216	defer c.rw.RUnlock()
1217
1218	log.Error("TODO")
1219	return nil, tracerr.Wrap(errTODO)
1220}
1221
1222// AuctionSetBootCoordinator is the interface to call the smart contract function
1223func (c *Client) AuctionSetBootCoordinator(newBootCoordinator ethCommon.Address) (tx *types.Transaction, err error) {
1224	c.rw.Lock()
1225	defer c.rw.Unlock()
1226	cpy := c.nextBlock().copy()
1227	defer func() { c.revertIfErr(err, cpy) }()
1228	if c.addr == nil {
1229		return nil, tracerr.Wrap(eth.ErrAccountNil)
1230	}
1231
1232	log.Error("TODO")
1233	return nil, tracerr.Wrap(errTODO)
1234}
1235
1236// AuctionGetBootCoordinator is the interface to call the smart contract function
1237func (c *Client) AuctionGetBootCoordinator() (*ethCommon.Address, error) {
1238	c.rw.RLock()
1239	defer c.rw.RUnlock()
1240
1241	currentBlock := c.currentBlock()
1242	a := currentBlock.Auction
1243
1244	return &a.Vars.BootCoordinator, nil
1245}
1246
1247// AuctionChangeDefaultSlotSetBid is the interface to call the smart contract function
1248func (c *Client) AuctionChangeDefaultSlotSetBid(slotSet int64, newInitialMinBid *big.Int) (tx *types.Transaction, err error) {
1249	c.rw.Lock()
1250	defer c.rw.Unlock()
1251	cpy := c.nextBlock().copy()
1252	defer func() { c.revertIfErr(err, cpy) }()
1253	if c.addr == nil {
1254		return nil, tracerr.Wrap(eth.ErrAccountNil)
1255	}
1256
1257	log.Error("TODO")
1258	return nil, tracerr.Wrap(errTODO)
1259}
1260
1261// AuctionSetCoordinator is the interface to call the smart contract function
1262func (c *Client) AuctionSetCoordinator(forger ethCommon.Address, URL string) (tx *types.Transaction, err error) {
1263	c.rw.Lock()
1264	defer c.rw.Unlock()
1265	cpy := c.nextBlock().copy()
1266	defer func() { c.revertIfErr(err, cpy) }()
1267	if c.addr == nil {
1268		return nil, tracerr.Wrap(eth.ErrAccountNil)
1269	}
1270
1271	nextBlock := c.nextBlock()
1272	a := nextBlock.Auction
1273
1274	a.State.Coordinators[*c.addr] = &eth.Coordinator{
1275		Forger: forger,
1276		URL:    URL,
1277	}
1278
1279	a.Events.SetCoordinator = append(a.Events.SetCoordinator,
1280		eth.AuctionEventSetCoordinator{
1281			BidderAddress:  *c.addr,
1282			ForgerAddress:  forger,
1283			CoordinatorURL: URL,
1284		})
1285
1286	type data struct {
1287		BidderAddress ethCommon.Address
1288		ForgerAddress ethCommon.Address
1289		URL           string
1290	}
1291	return a.addTransaction(c.newTransaction("registercoordinator", data{*c.addr, forger, URL})), nil
1292}
1293
1294// AuctionIsRegisteredCoordinator is the interface to call the smart contract function
1295func (c *Client) AuctionIsRegisteredCoordinator(forgerAddress ethCommon.Address) (bool, error) {
1296	c.rw.RLock()
1297	defer c.rw.RUnlock()
1298
1299	log.Error("TODO")
1300	return false, tracerr.Wrap(errTODO)
1301}
1302
1303// AuctionUpdateCoordinatorInfo is the interface to call the smart contract function
1304func (c *Client) AuctionUpdateCoordinatorInfo(forgerAddress ethCommon.Address, newWithdrawAddress ethCommon.Address, newURL string) (tx *types.Transaction, err error) {
1305	c.rw.Lock()
1306	defer c.rw.Unlock()
1307	cpy := c.nextBlock().copy()
1308	defer func() { c.revertIfErr(err, cpy) }()
1309	if c.addr == nil {
1310		return nil, tracerr.Wrap(eth.ErrAccountNil)
1311	}
1312
1313	log.Error("TODO")
1314	return nil, tracerr.Wrap(errTODO)
1315}
1316
1317// AuctionGetSlotNumber is the interface to call the smart contract function
1318func (c *Client) AuctionGetSlotNumber(blockNum int64) (int64, error) {
1319	c.rw.RLock()
1320	defer c.rw.RUnlock()
1321
1322	currentBlock := c.currentBlock()
1323	a := currentBlock.Auction
1324	return a.getSlotNumber(blockNum), nil
1325}
1326
1327// AuctionGetCurrentSlotNumber is the interface to call the smart contract function
1328func (c *Client) AuctionGetCurrentSlotNumber() (int64, error) {
1329	c.rw.RLock()
1330	defer c.rw.RUnlock()
1331
1332	log.Error("TODO")
1333	return 0, tracerr.Wrap(errTODO)
1334}
1335
1336// AuctionGetMinBidBySlot is the interface to call the smart contract function
1337func (c *Client) AuctionGetMinBidBySlot(slot int64) (*big.Int, error) {
1338	c.rw.RLock()
1339	defer c.rw.RUnlock()
1340
1341	log.Error("TODO")
1342	return nil, tracerr.Wrap(errTODO)
1343}
1344
1345// AuctionGetDefaultSlotSetBid is the interface to call the smart contract function
1346func (c *Client) AuctionGetDefaultSlotSetBid(slotSet uint8) (*big.Int, error) {
1347	c.rw.RLock()
1348	defer c.rw.RUnlock()
1349
1350	log.Error("TODO")
1351	return nil, tracerr.Wrap(errTODO)
1352}
1353
1354// AuctionGetSlotSet is the interface to call the smart contract function
1355func (c *Client) AuctionGetSlotSet(slot int64) (*big.Int, error) {
1356	c.rw.RLock()
1357	defer c.rw.RUnlock()
1358
1359	log.Error("TODO")
1360	return nil, tracerr.Wrap(errTODO)
1361}
1362
1363// AuctionTokensReceived is the interface to call the smart contract function
1364// func (c *Client) AuctionTokensReceived(operator, from, to ethCommon.Address, amount *big.Int, userData, operatorData []byte) error {
1365// 	return errTODO
1366// }
1367
1368// AuctionBidSimple is a wrapper around AuctionBid that automatically sets `amount` and `deadline`.
1369func (c *Client) AuctionBidSimple(slot int64, bidAmount *big.Int) (tx *types.Transaction, err error) {
1370	return c.AuctionBid(bidAmount, slot, bidAmount, big.NewInt(99999)) //nolint:gomnd
1371}
1372
1373// AuctionBid is the interface to call the smart contract function.  This
1374// implementation behaves as if any address has infinite tokens.
1375func (c *Client) AuctionBid(amount *big.Int, slot int64, bidAmount *big.Int,
1376	deadline *big.Int) (tx *types.Transaction, err error) {
1377	c.rw.Lock()
1378	defer c.rw.Unlock()
1379	cpy := c.nextBlock().copy()
1380	defer func() { func() { c.revertIfErr(err, cpy) }() }()
1381	if c.addr == nil {
1382		return nil, tracerr.Wrap(eth.ErrAccountNil)
1383	}
1384
1385	nextBlock := c.nextBlock()
1386	a := nextBlock.Auction
1387
1388	if slot < a.getCurrentSlotNumber()+int64(a.Vars.ClosedAuctionSlots) {
1389		return nil, tracerr.Wrap(errBidClosed)
1390	}
1391
1392	if slot >= a.getCurrentSlotNumber()+int64(a.Vars.ClosedAuctionSlots)+int64(a.Vars.OpenAuctionSlots) {
1393		return nil, tracerr.Wrap(errBidNotOpen)
1394	}
1395
1396	minBid, err := a.getMinBidBySlot(slot)
1397	if err != nil {
1398		return nil, tracerr.Wrap(err)
1399	}
1400	if bidAmount.Cmp(minBid) == -1 {
1401		return nil, tracerr.Wrap(errBidBelowMin)
1402	}
1403
1404	if _, ok := a.State.Coordinators[*c.addr]; !ok {
1405		return nil, tracerr.Wrap(errCoordNotReg)
1406	}
1407
1408	slotState, ok := a.State.Slots[slot]
1409	if !ok {
1410		slotState = eth.NewSlotState()
1411		a.State.Slots[slot] = slotState
1412	}
1413	slotState.Bidder = *c.addr
1414	slotState.BidAmount = bidAmount
1415
1416	a.Events.NewBid = append(a.Events.NewBid,
1417		eth.AuctionEventNewBid{Slot: slot, BidAmount: bidAmount, Bidder: *c.addr})
1418
1419	type data struct {
1420		Slot      int64
1421		BidAmount *big.Int
1422		Bidder    ethCommon.Address
1423	}
1424	return a.addTransaction(c.newTransaction("bid", data{slot, bidAmount, *c.addr})), nil
1425}
1426
1427// AuctionMultiBid is the interface to call the smart contract function.  This
1428// implementation behaves as if any address has infinite tokens.
1429func (c *Client) AuctionMultiBid(amount *big.Int, startingSlot int64, endingSlot int64, slotSet [6]bool,
1430	maxBid, closedMinBid, deadline *big.Int) (tx *types.Transaction, err error) {
1431	c.rw.Lock()
1432	defer c.rw.Unlock()
1433	cpy := c.nextBlock().copy()
1434	defer func() { c.revertIfErr(err, cpy) }()
1435	if c.addr == nil {
1436		return nil, tracerr.Wrap(eth.ErrAccountNil)
1437	}
1438
1439	log.Error("TODO")
1440	return nil, tracerr.Wrap(errTODO)
1441}
1442
1443// AuctionCanForge is the interface to call the smart contract function
1444func (c *Client) AuctionCanForge(forger ethCommon.Address, blockNum int64) (bool, error) {
1445	c.rw.RLock()
1446	defer c.rw.RUnlock()
1447
1448	currentBlock := c.currentBlock()
1449	a := currentBlock.Auction
1450	return a.canForge(forger, blockNum)
1451}
1452
1453// AuctionForge is the interface to call the smart contract function
1454func (c *Client) AuctionForge(forger ethCommon.Address) (tx *types.Transaction, err error) {
1455	c.rw.Lock()
1456	defer c.rw.Unlock()
1457	cpy := c.nextBlock().copy()
1458	defer func() { c.revertIfErr(err, cpy) }()
1459	if c.addr == nil {
1460		return nil, tracerr.Wrap(eth.ErrAccountNil)
1461	}
1462
1463	log.Error("TODO")
1464	return nil, tracerr.Wrap(errTODO)
1465}
1466
1467// AuctionClaimHEZ is the interface to call the smart contract function
1468func (c *Client) AuctionClaimHEZ() (tx *types.Transaction, err error) {
1469	c.rw.Lock()
1470	defer c.rw.Unlock()
1471	cpy := c.nextBlock().copy()
1472	defer func() { c.revertIfErr(err, cpy) }()
1473	if c.addr == nil {
1474		return nil, tracerr.Wrap(eth.ErrAccountNil)
1475	}
1476
1477	log.Error("TODO")
1478	return nil, tracerr.Wrap(errTODO)
1479}
1480
1481// AuctionGetClaimableHEZ is the interface to call the smart contract function
1482func (c *Client) AuctionGetClaimableHEZ(bidder ethCommon.Address) (*big.Int, error) {
1483	c.rw.RLock()
1484	defer c.rw.RUnlock()
1485
1486	log.Error("TODO")
1487	return nil, tracerr.Wrap(errTODO)
1488}
1489
1490// AuctionConstants returns the Constants of the Auction Smart Contract
1491func (c *Client) AuctionConstants() (*common.AuctionConstants, error) {
1492	c.rw.RLock()
1493	defer c.rw.RUnlock()
1494
1495	return c.auctionConstants, nil
1496}
1497
1498// AuctionEventsByBlock returns the events in a block that happened in the Auction Smart Contract
1499func (c *Client) AuctionEventsByBlock(blockNum int64) (*eth.AuctionEvents, *ethCommon.Hash, error) {
1500	c.rw.RLock()
1501	defer c.rw.RUnlock()
1502
1503	block, ok := c.blocks[blockNum]
1504	if !ok {
1505		return nil, nil, tracerr.Wrap(fmt.Errorf("Block %v doesn't exist", blockNum))
1506	}
1507	return &block.Auction.Events, &block.Eth.Hash, nil
1508}
1509
1510//
1511// WDelayer
1512//
1513
1514// WDelayerGetHermezGovernanceDAOAddress is the interface to call the smart contract function
1515func (c *Client) WDelayerGetHermezGovernanceDAOAddress() (*ethCommon.Address, error) {
1516	c.rw.RLock()
1517	defer c.rw.RUnlock()
1518
1519	log.Error("TODO")
1520	return nil, tracerr.Wrap(errTODO)
1521}
1522
1523// WDelayerSetHermezGovernanceDAOAddress is the interface to call the smart contract function
1524func (c *Client) WDelayerSetHermezGovernanceDAOAddress(newAddress ethCommon.Address) (tx *types.Transaction, err error) {
1525	c.rw.Lock()
1526	defer c.rw.Unlock()
1527	cpy := c.nextBlock().copy()
1528	defer func() { c.revertIfErr(err, cpy) }()
1529	if c.addr == nil {
1530		return nil, tracerr.Wrap(eth.ErrAccountNil)
1531	}
1532
1533	log.Error("TODO")
1534	return nil, tracerr.Wrap(errTODO)
1535}
1536
1537// WDelayerGetHermezKeeperAddress is the interface to call the smart contract function
1538func (c *Client) WDelayerGetHermezKeeperAddress() (*ethCommon.Address, error) {
1539	c.rw.RLock()
1540	defer c.rw.RUnlock()
1541
1542	log.Error("TODO")
1543	return nil, tracerr.Wrap(errTODO)
1544}
1545
1546// WDelayerSetHermezKeeperAddress is the interface to call the smart contract function
1547func (c *Client) WDelayerSetHermezKeeperAddress(newAddress ethCommon.Address) (tx *types.Transaction, err error) {
1548	c.rw.Lock()
1549	defer c.rw.Unlock()
1550	cpy := c.nextBlock().copy()
1551	defer func() { c.revertIfErr(err, cpy) }()
1552	if c.addr == nil {
1553		return nil, tracerr.Wrap(eth.ErrAccountNil)
1554	}
1555
1556	log.Error("TODO")
1557	return nil, tracerr.Wrap(errTODO)
1558}
1559
1560// WDelayerGetWhiteHackGroupAddress is the interface to call the smart contract function
1561func (c *Client) WDelayerGetWhiteHackGroupAddress() (*ethCommon.Address, error) {
1562	c.rw.RLock()
1563	defer c.rw.RUnlock()
1564
1565	log.Error("TODO")
1566	return nil, tracerr.Wrap(errTODO)
1567}
1568
1569// WDelayerSetWhiteHackGroupAddress is the interface to call the smart contract function
1570func (c *Client) WDelayerSetWhiteHackGroupAddress(newAddress ethCommon.Address) (tx *types.Transaction, err error) {
1571	c.rw.Lock()
1572	defer c.rw.Unlock()
1573	cpy := c.nextBlock().copy()
1574	defer func() { c.revertIfErr(err, cpy) }()
1575	if c.addr == nil {
1576		return nil, tracerr.Wrap(eth.ErrAccountNil)
1577	}
1578
1579	log.Error("TODO")
1580	return nil, tracerr.Wrap(errTODO)
1581}
1582
1583// WDelayerIsEmergencyMode is the interface to call the smart contract function
1584func (c *Client) WDelayerIsEmergencyMode() (bool, error) {
1585	c.rw.RLock()
1586	defer c.rw.RUnlock()
1587
1588	log.Error("TODO")
1589	return false, tracerr.Wrap(errTODO)
1590}
1591
1592// WDelayerGetWithdrawalDelay is the interface to call the smart contract function
1593func (c *Client) WDelayerGetWithdrawalDelay() (*big.Int, error) {
1594	c.rw.RLock()
1595	defer c.rw.RUnlock()
1596
1597	log.Error("TODO")
1598	return nil, tracerr.Wrap(errTODO)
1599}
1600
1601// WDelayerGetEmergencyModeStartingTime is the interface to call the smart contract function
1602func (c *Client) WDelayerGetEmergencyModeStartingTime() (*big.Int, error) {
1603	c.rw.RLock()
1604	defer c.rw.RUnlock()
1605
1606	log.Error("TODO")
1607	return nil, tracerr.Wrap(errTODO)
1608}
1609
1610// WDelayerEnableEmergencyMode is the interface to call the smart contract function
1611func (c *Client) WDelayerEnableEmergencyMode() (tx *types.Transaction, err error) {
1612	c.rw.Lock()
1613	defer c.rw.Unlock()
1614	cpy := c.nextBlock().copy()
1615	defer func() { c.revertIfErr(err, cpy) }()
1616	if c.addr == nil {
1617		return nil, tracerr.Wrap(eth.ErrAccountNil)
1618	}
1619
1620	log.Error("TODO")
1621	return nil, tracerr.Wrap(errTODO)
1622}
1623
1624// WDelayerChangeWithdrawalDelay is the interface to call the smart contract function
1625func (c *Client) WDelayerChangeWithdrawalDelay(newWithdrawalDelay uint64) (tx *types.Transaction, err error) {
1626	c.rw.Lock()
1627	defer c.rw.Unlock()
1628	cpy := c.nextBlock().copy()
1629	defer func() { c.revertIfErr(err, cpy) }()
1630	if c.addr == nil {
1631		return nil, tracerr.Wrap(eth.ErrAccountNil)
1632	}
1633
1634	nextBlock := c.nextBlock()
1635	w := nextBlock.WDelayer
1636	w.Vars.WithdrawalDelay = newWithdrawalDelay
1637	w.Events.NewWithdrawalDelay = append(w.Events.NewWithdrawalDelay,
1638		eth.WDelayerEventNewWithdrawalDelay{WithdrawalDelay: newWithdrawalDelay})
1639
1640	return w.addTransaction(c.newTransaction("changeWithdrawalDelay", newWithdrawalDelay)), nil
1641}
1642
1643// WDelayerDepositInfo is the interface to call the smart contract function
1644func (c *Client) WDelayerDepositInfo(owner, token ethCommon.Address) (eth.DepositState, error) {
1645	c.rw.RLock()
1646	defer c.rw.RUnlock()
1647
1648	log.Error("TODO")
1649	return eth.DepositState{}, tracerr.Wrap(errTODO)
1650}
1651
1652// WDelayerDeposit is the interface to call the smart contract function
1653func (c *Client) WDelayerDeposit(onwer, token ethCommon.Address, amount *big.Int) (tx *types.Transaction, err error) {
1654	c.rw.Lock()
1655	defer c.rw.Unlock()
1656	cpy := c.nextBlock().copy()
1657	defer func() { c.revertIfErr(err, cpy) }()
1658	if c.addr == nil {
1659		return nil, tracerr.Wrap(eth.ErrAccountNil)
1660	}
1661
1662	log.Error("TODO")
1663	return nil, tracerr.Wrap(errTODO)
1664}
1665
1666// WDelayerWithdrawal is the interface to call the smart contract function
1667func (c *Client) WDelayerWithdrawal(owner, token ethCommon.Address) (tx *types.Transaction, err error) {
1668	c.rw.Lock()
1669	defer c.rw.Unlock()
1670	cpy := c.nextBlock().copy()
1671	defer func() { c.revertIfErr(err, cpy) }()
1672	if c.addr == nil {
1673		return nil, tracerr.Wrap(eth.ErrAccountNil)
1674	}
1675
1676	log.Error("TODO")
1677	return nil, tracerr.Wrap(errTODO)
1678}
1679
1680// WDelayerEscapeHatchWithdrawal is the interface to call the smart contract function
1681func (c *Client) WDelayerEscapeHatchWithdrawal(to, token ethCommon.Address, amount *big.Int) (tx *types.Transaction, err error) {
1682	c.rw.Lock()
1683	defer c.rw.Unlock()
1684	cpy := c.nextBlock().copy()
1685	defer func() { c.revertIfErr(err, cpy) }()
1686	if c.addr == nil {
1687		return nil, tracerr.Wrap(eth.ErrAccountNil)
1688	}
1689
1690	log.Error("TODO")
1691	return nil, tracerr.Wrap(errTODO)
1692}
1693
1694// WDelayerEventsByBlock returns the events in a block that happened in the WDelayer Contract
1695func (c *Client) WDelayerEventsByBlock(blockNum int64) (*eth.WDelayerEvents, *ethCommon.Hash, error) {
1696	c.rw.RLock()
1697	defer c.rw.RUnlock()
1698
1699	block, ok := c.blocks[blockNum]
1700	if !ok {
1701		return nil, nil, tracerr.Wrap(fmt.Errorf("Block %v doesn't exist", blockNum))
1702	}
1703	return &block.WDelayer.Events, &block.Eth.Hash, nil
1704}
1705
1706// WDelayerConstants returns the Constants of the WDelayer Contract
1707func (c *Client) WDelayerConstants() (*common.WDelayerConstants, error) {
1708	c.rw.RLock()
1709	defer c.rw.RUnlock()
1710
1711	return c.wDelayerConstants, nil
1712}