Add ethclient full skeleton

common/zk.go

@@ -144,8 +144,3 @@ type ZKInputs struct {
 	ethAddr3  []*big.Int   // ethCommon.Address, len: [maxFeeTx]
 	siblings3 [][]*big.Int // Hash, len: [maxFeeTx][nLevels + 1]
 }
-
-// CallDataForge TBD
-type CallDataForge struct {
-	// TBD
-}

coordinator/coordinator.go

@@ -255,8 +255,8 @@ func (c *Coordinator) proveSequence() error {
 		return err
 	}
 	batchInfo.SetProof(proof)
-	callData := c.prepareCallDataForge(batchInfo)
-	_, err = c.ethClient.ForgeCall(callData)
+	forgeBatchArgs := c.prepareForgeBatchArgs(batchInfo)
+	_, err = c.ethClient.RollupForgeBatch(forgeBatchArgs)
 	if err != nil {
 		return err
 	}
@@ -306,6 +306,6 @@ func (c *Coordinator) shouldL1L2Batch() bool {
 	return false
 }
 
-func (c *Coordinator) prepareCallDataForge(batchInfo *BatchInfo) *common.CallDataForge {
+func (c *Coordinator) prepareForgeBatchArgs(batchInfo *BatchInfo) *eth.RollupForgeBatchArgs {
 	return nil
 }

coordinator/coordinator_test.go

@@ -10,6 +10,7 @@ import (
 	"github.com/hermeznetwork/hermez-node/db/historydb"
 	"github.com/hermeznetwork/hermez-node/db/l2db"
 	"github.com/hermeznetwork/hermez-node/db/statedb"
+	"github.com/hermeznetwork/hermez-node/eth"
 	"github.com/hermeznetwork/hermez-node/log"
 	"github.com/hermeznetwork/hermez-node/txselector"
 	"github.com/stretchr/testify/assert"
@@ -50,7 +51,7 @@ func TestCoordinator(t *testing.T) {
 		LoopInterval: 100 * time.Millisecond,
 	}
 	hdb := &historydb.HistoryDB{}
-	c := NewCoordinator(conf, hdb, txsel, bb, nil)
+	c := NewCoordinator(conf, hdb, txsel, bb, &eth.Client{})
 	c.Start()
 	time.Sleep(1 * time.Second)
 

eth/auction.go

@@ -0,0 +1,380 @@
+package eth
+
+import (
+	"math/big"
+
+	ethCommon "github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/core/types"
+)
+
+// AuctionConstants are the constants of the Rollup Smart Contract
+type AuctionConstants struct {
+	// Blocks to wait before starting with the first slot
+	DelayGenesis uint16
+	// Blocks per slot
+	BlocksPerSlot uint8
+	// Minimum bid when no one has bid yet
+	InitialMinimalBidding *big.Int
+	// First block where the first slot begins
+	GenesisBlockNum int64
+	// Hermez Governanze Token smartcontract address who controls some parameters and collects HEZ fee
+	GovernanceAddress ethCommon.Address
+	// ERC777 token with which the bids will be made
+	TokenHEZ ethCommon.Address
+	// HermezRollup smartcontract address
+	HermezRollup ethCommon.Address
+}
+
+// SlotState is the state of a slot
+type SlotState struct {
+	Forger       ethCommon.Address
+	BidAmount    *big.Int
+	ClosedMinBid *big.Int
+	Fulfilled    bool
+}
+
+// Coordinator is the details of the Coordinator identified by the forger address
+type Coordinator struct {
+	WithdrawalAddress ethCommon.Address
+	URL               string
+}
+
+// AuctionVariables are the variables of the Auction Smart Contract
+type AuctionVariables struct {
+	// Boot Coordinator Address
+	DonationAddress ethCommon.Address
+	// Boot Coordinator Address
+	BootCoordinator ethCommon.Address
+	// The minimum bid value in a series of 6 slots
+	MinBidEpoch [6]*big.Int
+	// Distance (#slots) to the closest slot to which you can bid ( 2 Slots = 2 * 40 Blocks = 20 min )
+	ClosedAuctionSlots uint16
+	// Distance (#slots) to the farthest slot to which you can bid (30 days = 4320 slots )
+	OpenAuctionSlots uint16
+	// How the HEZ tokens deposited by the slot winner are distributed (Burn: 40% - Donation: 40% - HGT: 20%)
+	AllocationRatio [3]uint8
+	// Minimum outbid (percentage) over the previous one to consider it valid
+	Outbidding uint8
+	// Number of blocks at the end of a slot in which any coordinator can forge if the winner has not forged one before
+	SlotDeadline uint8
+}
+
+// AuctionState represents the state of the Rollup in the Smart Contract
+type AuctionState struct {
+	// Mapping to control slot state
+	Slots map[int64]SlotState
+	// Mapping to control balances pending to claim
+	PendingBalances map[ethCommon.Address]*big.Int
+
+	// Mapping to register all the coordinators. The address used for the mapping is the forger address
+	Coordinators map[ethCommon.Address]Coordinator
+}
+
+// AuctionEventNewBid is an event of the Auction Smart Contract
+type AuctionEventNewBid struct {
+	Slot              int64
+	BidAmount         *big.Int
+	CoordinatorForger ethCommon.Address
+}
+
+// AuctionEventNewSlotDeadline is an event of the Auction Smart Contract
+type AuctionEventNewSlotDeadline struct {
+	NewSlotDeadline uint8
+}
+
+// AuctionEventNewClosedAuctionSlots is an event of the Auction Smart Contract
+type AuctionEventNewClosedAuctionSlots struct {
+	NewClosedAuctionSlots uint16
+}
+
+// AuctionEventNewOutbidding is an event of the Auction Smart Contract
+type AuctionEventNewOutbidding struct {
+	NewOutbidding uint8
+}
+
+// AuctionEventNewDonationAddress is an event of the Auction Smart Contract
+type AuctionEventNewDonationAddress struct {
+	NewDonationAddress ethCommon.Address
+}
+
+// AuctionEventNewBootCoordinator is an event of the Auction Smart Contract
+type AuctionEventNewBootCoordinator struct {
+	NewBootCoordinator ethCommon.Address
+}
+
+// AuctionEventNewOpenAuctionSlots is an event of the Auction Smart Contract
+type AuctionEventNewOpenAuctionSlots struct {
+	NewOpenAuctionSlots uint16
+}
+
+// AuctionEventNewAllocationRatio is an event of the Auction Smart Contract
+type AuctionEventNewAllocationRatio struct {
+	NewAllocationRatio [3]uint8
+}
+
+// AuctionEventNewCoordinator is an event of the Auction Smart Contract
+type AuctionEventNewCoordinator struct {
+	ForgerAddress     ethCommon.Address
+	WithdrawalAddress ethCommon.Address
+	URL               string
+}
+
+// AuctionEventCoordinatorUpdated is an event of the Auction Smart Contract
+type AuctionEventCoordinatorUpdated struct {
+	ForgerAddress     ethCommon.Address
+	WithdrawalAddress ethCommon.Address
+	URL               string
+}
+
+// AuctionEventNewForgeAllocated is an event of the Auction Smart Contract
+type AuctionEventNewForgeAllocated struct {
+	Forger           ethCommon.Address
+	CurrentSlot      int64
+	BurnAmount       *big.Int
+	DonationAmount   *big.Int
+	GovernanceAmount *big.Int
+}
+
+// AuctionEventNewMinBidEpoch is an event of the Auction Smart Contract
+type AuctionEventNewMinBidEpoch struct {
+	SlotEpoch        int64
+	NewInitialMinBid *big.Int
+}
+
+// AuctionEventNewForge is an event of the Auction Smart Contract
+type AuctionEventNewForge struct {
+	Forger      ethCommon.Address
+	CurrentSlot int64
+}
+
+// AuctionEventHEZClaimed is an event of the Auction Smart Contract
+type AuctionEventHEZClaimed struct {
+	Owner  ethCommon.Address
+	Amount *big.Int
+}
+
+// AuctionEvents is the list of events in a block of the Auction Smart Contract
+type AuctionEvents struct { //nolint:structcheck
+	NewBid                []AuctionEventNewBid
+	NewSlotDeadline       []AuctionEventNewSlotDeadline
+	NewClosedAuctionSlots []AuctionEventNewClosedAuctionSlots
+	NewOutbidding         []AuctionEventNewOutbidding
+	NewDonationAddress    []AuctionEventNewDonationAddress
+	NewBootCoordinator    []AuctionEventNewBootCoordinator
+	NewOpenAuctionSlots   []AuctionEventNewOpenAuctionSlots
+	NewAllocationRatio    []AuctionEventNewAllocationRatio
+	NewCoordinator        []AuctionEventNewCoordinator
+	CoordinatorUpdated    []AuctionEventCoordinatorUpdated
+	NewForgeAllocated     []AuctionEventNewForgeAllocated
+	NewMinBidEpoch        []AuctionEventNewMinBidEpoch
+	NewForge              []AuctionEventNewForge
+	HEZClaimed            []AuctionEventHEZClaimed
+}
+
+// AuctionInterface is the inteface to to Auction Smart Contract
+type AuctionInterface interface {
+	//
+	// Smart Contract Methods
+	//
+
+	// Getter/Setter, where Setter is onlyOwner
+	AuctionSetSlotDeadline(newDeadline uint8) (*types.Transaction, error)
+	AuctionGetSlotDeadline() (uint8, error)
+	AuctionSetOpenAuctionSlots(newOpenAuctionSlots uint16) (*types.Transaction, error)
+	AuctionGetOpenAuctionSlots() (uint16, error)
+	AuctionSetClosedAuctionSlots(newClosedAuctionSlots uint16) (*types.Transaction, error)
+	AuctionGetClosedAuctionSlots() (uint16, error)
+	AuctionSetOutbidding(newOutbidding uint8) (*types.Transaction, error)
+	AuctionGetOutbidding() (uint8, error)
+	AuctionSetAllocationRatio(newAllocationRatio [3]uint8) (*types.Transaction, error)
+	AuctionGetAllocationRatio() ([3]uint8, error)
+	AuctionSetDonationAddress(newDonationAddress ethCommon.Address) (*types.Transaction, error)
+	AuctionGetDonationAddress() (*ethCommon.Address, error)
+	AuctionSetBootCoordinator(newBootCoordinator ethCommon.Address) (*types.Transaction, error)
+	AuctionGetBootCoordinator() (*ethCommon.Address, error)
+	AuctionChangeEpochMinBid(slotEpoch int64, newInitialMinBid *big.Int) (*types.Transaction, error)
+
+	// Coordinator Management
+	AuctionRegisterCoordinator(forgerAddress ethCommon.Address, URL string) (*types.Transaction, error)
+	AuctionIsRegisteredCoordinator(forgerAddress ethCommon.Address) (bool, error)
+	AuctionUpdateCoordinatorInfo(forgerAddress ethCommon.Address, newWithdrawAddress ethCommon.Address, newURL string) (*types.Transaction, error)
+
+	// Slot Info
+	AuctionGetCurrentSlotNumber() (int64, error)
+	AuctionGetMinBidBySlot(slot int64) (*big.Int, error)
+	AuctionGetMinBidEpoch(epoch uint8) (*big.Int, error)
+
+	// Bidding
+	// AuctionTokensReceived(operator, from, to ethCommon.Address, amount *big.Int,
+	// 	userData, operatorData []byte) error // Only called from another smart contract
+	AuctionBid(slot int64, bidAmount *big.Int, forger ethCommon.Address) (*types.Transaction, error)
+	AuctionMultiBid(startingSlot int64, endingSlot int64, slotEpoch [6]bool,
+		maxBid, closedMinBid, budget *big.Int, forger ethCommon.Address) (*types.Transaction, error)
+
+	// Forge
+	AuctionCanForge(forger ethCommon.Address) (bool, error)
+	// AuctionForge(forger ethCommon.Address) (bool, error) // Only called from another smart contract
+
+	// Fees
+	AuctionClaimHEZ() (*types.Transaction, error)
+
+	//
+	// Smart Contract Status
+	//
+
+	AuctionConstants() (*AuctionConstants, error)
+	AuctionEventsByBlock(blockNum int64) (*AuctionEvents, *ethCommon.Hash, error)
+}
+
+//
+// Implementation
+//
+
+// AuctionClient is the implementation of the interface to the Auction Smart Contract in ethereum.
+type AuctionClient struct {
+}
+
+// AuctionSetSlotDeadline is the interface to call the smart contract function
+func (c *AuctionClient) AuctionSetSlotDeadline(newDeadline uint8) (*types.Transaction, error) {
+	return nil, errTODO
+}
+
+// AuctionGetSlotDeadline is the interface to call the smart contract function
+func (c *AuctionClient) AuctionGetSlotDeadline() (uint8, error) {
+	return 0, errTODO
+}
+
+// AuctionSetOpenAuctionSlots is the interface to call the smart contract function
+func (c *AuctionClient) AuctionSetOpenAuctionSlots(newOpenAuctionSlots uint16) (*types.Transaction, error) {
+	return nil, errTODO
+}
+
+// AuctionGetOpenAuctionSlots is the interface to call the smart contract function
+func (c *AuctionClient) AuctionGetOpenAuctionSlots() (uint16, error) {
+	return 0, errTODO
+}
+
+// AuctionSetClosedAuctionSlots is the interface to call the smart contract function
+func (c *AuctionClient) AuctionSetClosedAuctionSlots(newClosedAuctionSlots uint16) (*types.Transaction, error) {
+	return nil, errTODO
+}
+
+// AuctionGetClosedAuctionSlots is the interface to call the smart contract function
+func (c *AuctionClient) AuctionGetClosedAuctionSlots() (uint16, error) {
+	return 0, errTODO
+}
+
+// AuctionSetOutbidding is the interface to call the smart contract function
+func (c *AuctionClient) AuctionSetOutbidding(newOutbidding uint8) (*types.Transaction, error) {
+	return nil, errTODO
+}
+
+// AuctionGetOutbidding is the interface to call the smart contract function
+func (c *AuctionClient) AuctionGetOutbidding() (uint8, error) {
+	return 0, errTODO
+}
+
+// AuctionSetAllocationRatio is the interface to call the smart contract function
+func (c *AuctionClient) AuctionSetAllocationRatio(newAllocationRatio [3]uint8) (*types.Transaction, error) {
+	return nil, errTODO
+}
+
+// AuctionGetAllocationRatio is the interface to call the smart contract function
+func (c *AuctionClient) AuctionGetAllocationRatio() ([3]uint8, error) {
+	return [3]uint8{}, errTODO
+}
+
+// AuctionSetDonationAddress is the interface to call the smart contract function
+func (c *AuctionClient) AuctionSetDonationAddress(newDonationAddress ethCommon.Address) (*types.Transaction, error) {
+	return nil, errTODO
+}
+
+// AuctionGetDonationAddress is the interface to call the smart contract function
+func (c *AuctionClient) AuctionGetDonationAddress() (*ethCommon.Address, error) {
+	return nil, errTODO
+}
+
+// AuctionSetBootCoordinator is the interface to call the smart contract function
+func (c *AuctionClient) AuctionSetBootCoordinator(newBootCoordinator ethCommon.Address) (*types.Transaction, error) {
+	return nil, errTODO
+}
+
+// AuctionGetBootCoordinator is the interface to call the smart contract function
+func (c *AuctionClient) AuctionGetBootCoordinator() (*ethCommon.Address, error) {
+	return nil, errTODO
+}
+
+// AuctionChangeEpochMinBid is the interface to call the smart contract function
+func (c *AuctionClient) AuctionChangeEpochMinBid(slotEpoch int64, newInitialMinBid *big.Int) (*types.Transaction, error) {
+	return nil, errTODO
+}
+
+// AuctionRegisterCoordinator is the interface to call the smart contract function
+func (c *AuctionClient) AuctionRegisterCoordinator(forgerAddress ethCommon.Address, URL string) (*types.Transaction, error) {
+	return nil, errTODO
+}
+
+// AuctionIsRegisteredCoordinator is the interface to call the smart contract function
+func (c *AuctionClient) AuctionIsRegisteredCoordinator(forgerAddress ethCommon.Address) (bool, error) {
+	return false, errTODO
+}
+
+// AuctionUpdateCoordinatorInfo is the interface to call the smart contract function
+func (c *AuctionClient) AuctionUpdateCoordinatorInfo(forgerAddress ethCommon.Address, newWithdrawAddress ethCommon.Address, newURL string) (*types.Transaction, error) {
+	return nil, errTODO
+}
+
+// AuctionGetCurrentSlotNumber is the interface to call the smart contract function
+func (c *AuctionClient) AuctionGetCurrentSlotNumber() (int64, error) {
+	return 0, errTODO
+}
+
+// AuctionGetMinBidBySlot is the interface to call the smart contract function
+func (c *AuctionClient) AuctionGetMinBidBySlot(slot int64) (*big.Int, error) {
+	return nil, errTODO
+}
+
+// AuctionGetMinBidEpoch is the interface to call the smart contract function
+func (c *AuctionClient) AuctionGetMinBidEpoch(epoch uint8) (*big.Int, error) {
+	return nil, errTODO
+}
+
+// AuctionTokensReceived is the interface to call the smart contract function
+// func (c *AuctionClient) AuctionTokensReceived(operator, from, to ethCommon.Address, amount *big.Int, userData, operatorData []byte) error {
+// 	return errTODO
+// }
+
+// AuctionBid is the interface to call the smart contract function
+func (c *AuctionClient) AuctionBid(slot int64, bidAmount *big.Int, forger ethCommon.Address) (*types.Transaction, error) {
+	return nil, errTODO
+}
+
+// AuctionMultiBid is the interface to call the smart contract function
+func (c *AuctionClient) AuctionMultiBid(startingSlot int64, endingSlot int64, slotEpoch [6]bool, maxBid, closedMinBid, budget *big.Int, forger ethCommon.Address) (*types.Transaction, error) {
+	return nil, errTODO
+}
+
+// AuctionCanForge is the interface to call the smart contract function
+func (c *AuctionClient) AuctionCanForge(forger ethCommon.Address) (bool, error) {
+	return false, errTODO
+}
+
+// AuctionForge is the interface to call the smart contract function
+// func (c *AuctionClient) AuctionForge(forger ethCommon.Address) (bool, error) {
+// 	return false, errTODO
+// }
+
+// AuctionClaimHEZ is the interface to call the smart contract function
+func (c *AuctionClient) AuctionClaimHEZ() (*types.Transaction, error) {
+	return nil, errTODO
+}
+
+// AuctionConstants returns the Constants of the Auction Smart Contract
+func (c *AuctionClient) AuctionConstants() (*AuctionConstants, error) {
+	return nil, errTODO
+}
+
+// AuctionEventsByBlock returns the events in a block that happened in the Auction Smart Contract
+func (c *AuctionClient) AuctionEventsByBlock(blockNum int64) (*AuctionEvents, *ethCommon.Hash, error) {
+	return nil, nil, errTODO
+}

eth/client.go

@@ -1,243 +1,42 @@
 package eth
 
 import (
-	"context"
 	"fmt"
-	"math/big"
-	"time"
 
 	"github.com/ethereum/go-ethereum/accounts"
-	"github.com/ethereum/go-ethereum/accounts/abi/bind"
 	ethKeystore "github.com/ethereum/go-ethereum/accounts/keystore"
-	ethCommon "github.com/ethereum/go-ethereum/common"
-	"github.com/ethereum/go-ethereum/core/types"
 	"github.com/ethereum/go-ethereum/ethclient"
-	"github.com/hermeznetwork/hermez-node/common"
-	"github.com/hermeznetwork/hermez-node/log"
 )
 
-var (
-	// ErrAccountNil is used when the calls can not be made because the account is nil
-	ErrAccountNil = fmt.Errorf("Authorized calls can't be made when the account is nil")
-	// ErrReceiptStatusFailed is used when receiving a failed transaction
-	ErrReceiptStatusFailed = fmt.Errorf("receipt status is failed")
-	// ErrReceiptNotReceived is used when unable to retrieve a transaction
-	ErrReceiptNotReceived = fmt.Errorf("receipt not available")
-)
-
-const (
-	errStrDeploy      = "deployment of %s failed: %w"
-	errStrWaitReceipt = "wait receipt of %s deploy failed: %w"
-
-	// default values
-	defaultCallGasLimit        = 300000
-	defaultDeployGasLimit      = 1000000
-	defaultGasPriceDiv         = 100
-	defaultReceiptTimeout      = 60
-	defaultIntervalReceiptLoop = 200
-)
-
-// Config defines the configuration parameters of the Client
-type Config struct {
-	CallGasLimit        uint64
-	DeployGasLimit      uint64
-	GasPriceDiv         uint64
-	ReceiptTimeout      time.Duration // in seconds
-	IntervalReceiptLoop time.Duration // in milliseconds
-}
-
-// Client is an ethereum client to call Smart Contract methods.
-type Client struct {
-	client         *ethclient.Client
-	account        *accounts.Account
-	ks             *ethKeystore.KeyStore
-	ReceiptTimeout time.Duration
-	config         *Config
-}
-
-// NewClient creates a Client instance.  The account is not mandatory (it can
-// be nil).  If the account is nil, CallAuth will fail with ErrAccountNil.
-func NewClient(client *ethclient.Client, account *accounts.Account, ks *ethKeystore.KeyStore, config *Config) *Client {
-	if config == nil {
-		config = &Config{
-			CallGasLimit:        defaultCallGasLimit,
-			DeployGasLimit:      defaultDeployGasLimit,
-			GasPriceDiv:         defaultGasPriceDiv,
-			ReceiptTimeout:      defaultReceiptTimeout,
-			IntervalReceiptLoop: defaultIntervalReceiptLoop,
-		}
-	}
-	return &Client{client: client, account: account, ks: ks, ReceiptTimeout: config.ReceiptTimeout * time.Second, config: config}
-}
-
-// BalanceAt retieves information about the default account
-func (c *Client) BalanceAt(addr ethCommon.Address) (*big.Int, error) {
-	return c.client.BalanceAt(context.TODO(), addr, nil)
-}
-
-// Account returns the underlying ethereum account
-func (c *Client) Account() *accounts.Account {
-	return c.account
-}
-
-// CallAuth performs a Smart Contract method call that requires authorization.
-// This call requires a valid account with Ether that can be spend during the
-// call.
-func (c *Client) CallAuth(gasLimit uint64,
-	fn func(*ethclient.Client, *bind.TransactOpts) (*types.Transaction, error)) (*types.Transaction, error) {
-	if c.account == nil {
-		return nil, ErrAccountNil
-	}
-
-	gasPrice, err := c.client.SuggestGasPrice(context.Background())
-	if err != nil {
-		return nil, err
-	}
-	inc := new(big.Int).Set(gasPrice)
-	inc.Div(inc, new(big.Int).SetUint64(c.config.GasPriceDiv))
-	gasPrice.Add(gasPrice, inc)
-	log.Debug("Transaction metadata", "gasPrice", gasPrice)
-
-	auth, err := bind.NewKeyStoreTransactor(c.ks, *c.account)
-	if err != nil {
-		return nil, err
-	}
-	auth.Value = big.NewInt(0) // in wei
-	if gasLimit == 0 {
-		auth.GasLimit = c.config.CallGasLimit // in units
-	} else {
-		auth.GasLimit = gasLimit // in units
-	}
-	auth.GasPrice = gasPrice
-
-	tx, err := fn(c.client, auth)
-	if tx != nil {
-		log.Debug("Transaction", "tx", tx.Hash().Hex(), "nonce", tx.Nonce())
-	}
-	return tx, err
-}
+var errTODO = fmt.Errorf("TODO: Not implemented yet")
 
-// ContractData contains the contract data
-type ContractData struct {
-	Address ethCommon.Address
-	Tx      *types.Transaction
-	Receipt *types.Receipt
+// ClientInterface is the eth Client interface used by hermez-node modules to
+// interact with Ethereum Blockchain and smart contracts.
+type ClientInterface interface {
+	EthereumInterface
+	RollupInterface
+	AuctionInterface
 }
 
-// Deploy a smart contract.  `name` is used to log deployment information.  fn
-// is a wrapper to the deploy function generated by abigen.  In case of error,
-// the returned `ContractData` may have some parameters filled depending on the
-// kind of error that occurred.
-func (c *Client) Deploy(name string,
-	fn func(c *ethclient.Client, auth *bind.TransactOpts) (ethCommon.Address, *types.Transaction, interface{}, error)) (ContractData, error) {
-	var contractData ContractData
-	log.Info("Deploying", "contract", name)
-	tx, err := c.CallAuth(
-		c.config.DeployGasLimit,
-		func(client *ethclient.Client, auth *bind.TransactOpts) (*types.Transaction, error) {
-			addr, tx, _, err := fn(client, auth)
-			if err != nil {
-				return nil, err
-			}
-			contractData.Address = addr
-			return tx, nil
-		},
-	)
-	if err != nil {
-		return contractData, fmt.Errorf(errStrDeploy, name, err)
-	}
-	log.Info("Waiting receipt", "tx", tx.Hash().Hex(), "contract", name)
-	contractData.Tx = tx
-	receipt, err := c.WaitReceipt(tx)
-	if err != nil {
-		return contractData, fmt.Errorf(errStrWaitReceipt, name, err)
-	}
-	contractData.Receipt = receipt
-	return contractData, nil
-}
-
-// Call performs a read only Smart Contract method call.
-func (c *Client) Call(fn func(*ethclient.Client) error) error {
-	return fn(c.client)
-}
-
-// WaitReceipt will block until a transaction is confirmed.  Internally it
-// polls the state every 200 milliseconds.
-func (c *Client) WaitReceipt(tx *types.Transaction) (*types.Receipt, error) {
-	return c.waitReceipt(context.TODO(), tx, c.ReceiptTimeout)
-}
-
-// GetReceipt will check if a transaction is confirmed and return
-// immediately, waiting at most 1 second and returning error if the transaction
-// is still pending.
-func (c *Client) GetReceipt(tx *types.Transaction) (*types.Receipt, error) {
-	ctx, cancel := context.WithTimeout(context.TODO(), 1*time.Second)
-	defer cancel()
-	return c.waitReceipt(ctx, tx, 0)
-}
-
-func (c *Client) waitReceipt(ctx context.Context, tx *types.Transaction, timeout time.Duration) (*types.Receipt, error) {
-	var err error
-	var receipt *types.Receipt
-
-	txid := tx.Hash()
-	log.Debug("Waiting for receipt", "tx", txid.Hex())
-
-	start := time.Now()
-	for {
-		receipt, err = c.client.TransactionReceipt(ctx, txid)
-		if receipt != nil || time.Since(start) >= timeout {
-			break
-		}
-		time.Sleep(c.config.IntervalReceiptLoop * time.Millisecond)
-	}
+//
+// Implementation
+//
 
-	if receipt != nil && receipt.Status == types.ReceiptStatusFailed {
-		log.Error("Failed transaction", "tx", txid.Hex())
-		return receipt, ErrReceiptStatusFailed
-	}
-
-	if receipt == nil {
-		log.Debug("Pendingtransaction / Wait receipt timeout", "tx", txid.Hex(), "lasterr", err)
-		return receipt, ErrReceiptNotReceived
-	}
-	log.Debug("Successful transaction", "tx", txid.Hex())
-
-	return receipt, err
-}
-
-// CurrentBlock returns the current block number in the blockchain
-func (c *Client) CurrentBlock() (*big.Int, error) {
-	ctx, cancel := context.WithTimeout(context.TODO(), 1*time.Second)
-	defer cancel()
-	header, err := c.client.HeaderByNumber(ctx, nil)
-	if err != nil {
-		return nil, err
-	}
-	return header.Number, nil
-}
-
-// HeaderByNumber internally calls ethclient.Client HeaderByNumber
-func (c *Client) HeaderByNumber(ctx context.Context, number *big.Int) (*types.Header, error) {
-	return c.client.HeaderByNumber(ctx, number)
+// Client is used to interact with Ethereum and the Hermez smart contracts.
+type Client struct {
+	EthereumClient
+	AuctionClient
+	RollupClient
 }
 
-// BlockByNumber internally calls ethclient.Client BlockByNumber and returns *common.Block
-func (c *Client) BlockByNumber(ctx context.Context, number *big.Int) (*common.Block, error) {
-	block, err := c.client.BlockByNumber(ctx, number)
-	if err != nil {
-		return nil, err
+// NewClient creates a new Client to interact with Ethereum and the Hermez smart contracts.
+func NewClient(client *ethclient.Client, account *accounts.Account, ks *ethKeystore.KeyStore, config *EthereumConfig) *Client {
+	ethereumClient := NewEthereumClient(client, account, ks, config)
+	auctionClient := &AuctionClient{}
+	rollupCient := &RollupClient{}
+	return &Client{
+		EthereumClient: *ethereumClient,
+		AuctionClient:  *auctionClient,
+		RollupClient:   *rollupCient,
 	}
-	b := &common.Block{
-		EthBlockNum: block.Number().Uint64(),
-		Timestamp:   time.Unix(int64(block.Time()), 0),
-		Hash:        block.Hash(),
-	}
-	return b, nil
-}
-
-// ForgeCall send the *common.CallDataForge to the Forge method of the smart contract
-func (c *Client) ForgeCall(callData *common.CallDataForge) ([]byte, error) {
-	// TODO this depends on the smart contracts, once are ready this will be updated
-	return nil, nil
 }

eth/ethereum.go

@@ -0,0 +1,244 @@
+package eth
+
+import (
+	"context"
+	"fmt"
+	"math/big"
+	"time"
+
+	"github.com/ethereum/go-ethereum/accounts"
+	"github.com/ethereum/go-ethereum/accounts/abi/bind"
+	ethKeystore "github.com/ethereum/go-ethereum/accounts/keystore"
+	ethCommon "github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/ethclient"
+	"github.com/hermeznetwork/hermez-node/common"
+	"github.com/hermeznetwork/hermez-node/log"
+)
+
+// EthereumInterface is the interface to Ethereum
+type EthereumInterface interface {
+	EthCurrentBlock() (*big.Int, error)
+	EthHeaderByNumber(context.Context, *big.Int) (*types.Header, error)
+	EthBlockByNumber(context.Context, *big.Int) (*common.Block, error)
+}
+
+var (
+	// ErrAccountNil is used when the calls can not be made because the account is nil
+	ErrAccountNil = fmt.Errorf("Authorized calls can't be made when the account is nil")
+	// ErrReceiptStatusFailed is used when receiving a failed transaction
+	ErrReceiptStatusFailed = fmt.Errorf("receipt status is failed")
+	// ErrReceiptNotReceived is used when unable to retrieve a transaction
+	ErrReceiptNotReceived = fmt.Errorf("receipt not available")
+)
+
+const (
+	errStrDeploy      = "deployment of %s failed: %w"
+	errStrWaitReceipt = "wait receipt of %s deploy failed: %w"
+
+	// default values
+	defaultCallGasLimit        = 300000
+	defaultDeployGasLimit      = 1000000
+	defaultGasPriceDiv         = 100
+	defaultReceiptTimeout      = 60
+	defaultIntervalReceiptLoop = 200
+)
+
+// EthereumConfig defines the configuration parameters of the EthereumClient
+type EthereumConfig struct {
+	CallGasLimit        uint64
+	DeployGasLimit      uint64
+	GasPriceDiv         uint64
+	ReceiptTimeout      time.Duration // in seconds
+	IntervalReceiptLoop time.Duration // in milliseconds
+}
+
+// EthereumClient is an ethereum client to call Smart Contract methods and check blockchain information.
+type EthereumClient struct {
+	client         *ethclient.Client
+	account        *accounts.Account
+	ks             *ethKeystore.KeyStore
+	ReceiptTimeout time.Duration
+	config         *EthereumConfig
+}
+
+// NewEthereumClient creates a EthereumClient instance.  The account is not mandatory (it can
+// be nil).  If the account is nil, CallAuth will fail with ErrAccountNil.
+func NewEthereumClient(client *ethclient.Client, account *accounts.Account, ks *ethKeystore.KeyStore, config *EthereumConfig) *EthereumClient {
+	if config == nil {
+		config = &EthereumConfig{
+			CallGasLimit:        defaultCallGasLimit,
+			DeployGasLimit:      defaultDeployGasLimit,
+			GasPriceDiv:         defaultGasPriceDiv,
+			ReceiptTimeout:      defaultReceiptTimeout,
+			IntervalReceiptLoop: defaultIntervalReceiptLoop,
+		}
+	}
+	return &EthereumClient{client: client, account: account, ks: ks, ReceiptTimeout: config.ReceiptTimeout * time.Second, config: config}
+}
+
+// BalanceAt retieves information about the default account
+func (c *EthereumClient) BalanceAt(addr ethCommon.Address) (*big.Int, error) {
+	return c.client.BalanceAt(context.TODO(), addr, nil)
+}
+
+// Account returns the underlying ethereum account
+func (c *EthereumClient) Account() *accounts.Account {
+	return c.account
+}
+
+// CallAuth performs a Smart Contract method call that requires authorization.
+// This call requires a valid account with Ether that can be spend during the
+// call.
+func (c *EthereumClient) CallAuth(gasLimit uint64,
+	fn func(*ethclient.Client, *bind.TransactOpts) (*types.Transaction, error)) (*types.Transaction, error) {
+	if c.account == nil {
+		return nil, ErrAccountNil
+	}
+
+	gasPrice, err := c.client.SuggestGasPrice(context.Background())
+	if err != nil {
+		return nil, err
+	}
+	inc := new(big.Int).Set(gasPrice)
+	inc.Div(inc, new(big.Int).SetUint64(c.config.GasPriceDiv))
+	gasPrice.Add(gasPrice, inc)
+	log.Debugw("Transaction metadata", "gasPrice", gasPrice)
+
+	auth, err := bind.NewKeyStoreTransactor(c.ks, *c.account)
+	if err != nil {
+		return nil, err
+	}
+	auth.Value = big.NewInt(0) // in wei
+	if gasLimit == 0 {
+		auth.GasLimit = c.config.CallGasLimit // in units
+	} else {
+		auth.GasLimit = gasLimit // in units
+	}
+	auth.GasPrice = gasPrice
+
+	tx, err := fn(c.client, auth)
+	if tx != nil {
+		log.Debugw("Transaction", "tx", tx.Hash().Hex(), "nonce", tx.Nonce())
+	}
+	return tx, err
+}
+
+// ContractData contains the contract data
+type ContractData struct {
+	Address ethCommon.Address
+	Tx      *types.Transaction
+	Receipt *types.Receipt
+}
+
+// Deploy a smart contract.  `name` is used to log deployment information.  fn
+// is a wrapper to the deploy function generated by abigen.  In case of error,
+// the returned `ContractData` may have some parameters filled depending on the
+// kind of error that occurred.
+func (c *EthereumClient) Deploy(name string,
+	fn func(c *ethclient.Client, auth *bind.TransactOpts) (ethCommon.Address, *types.Transaction, interface{}, error)) (ContractData, error) {
+	var contractData ContractData
+	log.Infow("Deploying", "contract", name)
+	tx, err := c.CallAuth(
+		c.config.DeployGasLimit,
+		func(client *ethclient.Client, auth *bind.TransactOpts) (*types.Transaction, error) {
+			addr, tx, _, err := fn(client, auth)
+			if err != nil {
+				return nil, err
+			}
+			contractData.Address = addr
+			return tx, nil
+		},
+	)
+	if err != nil {
+		return contractData, fmt.Errorf(errStrDeploy, name, err)
+	}
+	log.Infow("Waiting receipt", "tx", tx.Hash().Hex(), "contract", name)
+	contractData.Tx = tx
+	receipt, err := c.WaitReceipt(tx)
+	if err != nil {
+		return contractData, fmt.Errorf(errStrWaitReceipt, name, err)
+	}
+	contractData.Receipt = receipt
+	return contractData, nil
+}
+
+// Call performs a read only Smart Contract method call.
+func (c *EthereumClient) Call(fn func(*ethclient.Client) error) error {
+	return fn(c.client)
+}
+
+// WaitReceipt will block until a transaction is confirmed.  Internally it
+// polls the state every 200 milliseconds.
+func (c *EthereumClient) WaitReceipt(tx *types.Transaction) (*types.Receipt, error) {
+	return c.waitReceipt(context.TODO(), tx, c.ReceiptTimeout)
+}
+
+// GetReceipt will check if a transaction is confirmed and return
+// immediately, waiting at most 1 second and returning error if the transaction
+// is still pending.
+func (c *EthereumClient) GetReceipt(tx *types.Transaction) (*types.Receipt, error) {
+	ctx, cancel := context.WithTimeout(context.TODO(), 1*time.Second)
+	defer cancel()
+	return c.waitReceipt(ctx, tx, 0)
+}
+
+func (c *EthereumClient) waitReceipt(ctx context.Context, tx *types.Transaction, timeout time.Duration) (*types.Receipt, error) {
+	var err error
+	var receipt *types.Receipt
+
+	txid := tx.Hash()
+	log.Debugw("Waiting for receipt", "tx", txid.Hex())
+
+	start := time.Now()
+	for {
+		receipt, err = c.client.TransactionReceipt(ctx, txid)
+		if receipt != nil || time.Since(start) >= timeout {
+			break
+		}
+		time.Sleep(c.config.IntervalReceiptLoop * time.Millisecond)
+	}
+
+	if receipt != nil && receipt.Status == types.ReceiptStatusFailed {
+		log.Errorw("Failed transaction", "tx", txid.Hex())
+		return receipt, ErrReceiptStatusFailed
+	}
+
+	if receipt == nil {
+		log.Debugw("Pendingtransaction / Wait receipt timeout", "tx", txid.Hex(), "lasterr", err)
+		return receipt, ErrReceiptNotReceived
+	}
+	log.Debugw("Successful transaction", "tx", txid.Hex())
+
+	return receipt, err
+}
+
+// EthCurrentBlock returns the current block number in the blockchain
+func (c *EthereumClient) EthCurrentBlock() (*big.Int, error) {
+	ctx, cancel := context.WithTimeout(context.TODO(), 1*time.Second)
+	defer cancel()
+	header, err := c.client.HeaderByNumber(ctx, nil)
+	if err != nil {
+		return nil, err
+	}
+	return header.Number, nil
+}
+
+// EthHeaderByNumber internally calls ethclient.Client HeaderByNumber
+func (c *EthereumClient) EthHeaderByNumber(ctx context.Context, number *big.Int) (*types.Header, error) {
+	return c.client.HeaderByNumber(ctx, number)
+}
+
+// EthBlockByNumber internally calls ethclient.Client BlockByNumber and returns *common.Block
+func (c *EthereumClient) EthBlockByNumber(ctx context.Context, number *big.Int) (*common.Block, error) {
+	block, err := c.client.BlockByNumber(ctx, number)
+	if err != nil {
+		return nil, err
+	}
+	b := &common.Block{
+		EthBlockNum: block.Number().Uint64(),
+		Timestamp:   time.Unix(int64(block.Time()), 0),
+		Hash:        block.Hash(),
+	}
+	return b, nil
+}

eth/interface.go

@@ -1,18 +0,0 @@
-package eth
-
-import (
-	"context"
-	"math/big"
-
-	"github.com/ethereum/go-ethereum/core/types"
-	"github.com/hermeznetwork/hermez-node/common"
-)
-
-// ClientInterface is the eth Client interface used by hermez-node modules to
-// interact with Ethereum Blockchain and smart contracts.
-type ClientInterface interface {
-	CurrentBlock() (*big.Int, error)
-	HeaderByNumber(context.Context, *big.Int) (*types.Header, error)
-	BlockByNumber(context.Context, *big.Int) (*common.Block, error)
-	ForgeCall(*common.CallDataForge) ([]byte, error)
-}

eth/rollup.go

@@ -0,0 +1,298 @@
+package eth
+
+import (
+	"math/big"
+
+	ethCommon "github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/hermeznetwork/hermez-node/utils"
+	"github.com/iden3/go-iden3-crypto/babyjub"
+)
+
+// RollupConstants are the constants of the Rollup Smart Contract
+type RollupConstants struct {
+	// Maxim Deposit allowed
+	MaxAmountDeposit *big.Int
+	MaxAmountL2      *big.Int
+	MaxTokens        uint32
+	// maximum L1 transactions allowed to be queued for a batch
+	MaxL1Tx int
+	// maximum L1 user transactions allowed to be queued for a batch
+	MaxL1UserTx        int
+	Rfield             *big.Int
+	L1CoordinatorBytes int
+	L1UserBytes        int
+	L2Bytes            int
+}
+
+// RollupVariables are the variables of the Rollup Smart Contract
+type RollupVariables struct {
+	MaxTxVerifiers     []int
+	TokenHEZ           ethCommon.Address
+	GovernanceAddress  ethCommon.Address
+	SafetyBot          ethCommon.Address
+	ConsensusContract  ethCommon.Address
+	WithdrawalContract ethCommon.Address
+	FeeAddToken        *big.Int
+	ForgeL1Timeout     int64
+	FeeL1UserTx        *big.Int
+}
+
+// QueueStruct is the queue of L1Txs for a batch
+//nolint:structcheck
+type QueueStruct struct {
+	L1TxQueue    [][]byte
+	CurrentIndex int64
+	TotalL1TxFee *big.Int
+}
+
+// RollupState represents the state of the Rollup in the Smart Contract
+//nolint:structcheck,unused
+type RollupState struct {
+	StateRoot              *big.Int
+	ExitRoots              []*big.Int
+	ExiNullifierMap        map[[256 / 8]byte]bool
+	TokenList              []ethCommon.Address
+	TokenMap               map[ethCommon.Address]bool
+	mapL1TxQueue           map[int64]QueueStruct
+	LastLTxBatch           int64
+	CurrentToForgeL1TxsNum int64
+	LastToForgeL1TxsNum    int64
+	CurrentIdx             int64
+}
+
+// RollupEventL1UserTx is an event of the Rollup Smart Contract
+type RollupEventL1UserTx struct {
+	L1UserTx        []byte
+	ToForgeL1TxsNum int64
+	Position        int
+}
+
+// RollupEventAddToken is an event of the Rollup Smart Contract
+type RollupEventAddToken struct {
+	Address ethCommon.Address
+	TokenID uint32
+}
+
+// RollupEventForgeBatch is an event of the Rollup Smart Contract
+type RollupEventForgeBatch struct {
+	BatchNum int64
+}
+
+// RollupEventUpdateForgeL1Timeout is an event of the Rollup Smart Contract
+type RollupEventUpdateForgeL1Timeout struct {
+	ForgeL1Timeout int64
+}
+
+// RollupEventUpdateFeeL1UserTx is an event of the Rollup Smart Contract
+type RollupEventUpdateFeeL1UserTx struct {
+	FeeL1UserTx *big.Int
+}
+
+// RollupEventUpdateFeeAddToken is an event of the Rollup Smart Contract
+type RollupEventUpdateFeeAddToken struct {
+	FeeAddToken *big.Int
+}
+
+// RollupEventUpdateTokenHez is an event of the Rollup Smart Contract
+type RollupEventUpdateTokenHez struct {
+	TokenHEZ ethCommon.Address
+}
+
+// RollupEventWithdraw is an event of the Rollup Smart Contract
+type RollupEventWithdraw struct {
+	Idx         int64
+	NumExitRoot int
+}
+
+// RollupEvents is the list of events in a block of the Rollup Smart Contract
+type RollupEvents struct { //nolint:structcheck
+	L1UserTx             []RollupEventL1UserTx
+	AddToken             []RollupEventAddToken
+	ForgeBatch           []RollupEventForgeBatch
+	UpdateForgeL1Timeout []RollupEventUpdateForgeL1Timeout
+	UpdateFeeL1UserTx    []RollupEventUpdateFeeL1UserTx
+	UpdateFeeAddToken    []RollupEventUpdateFeeAddToken
+	UpdateTokenHez       []RollupEventUpdateTokenHez
+	Withdraw             []RollupEventWithdraw
+}
+
+// RollupForgeBatchArgs are the arguments to the ForgeBatch function in the Rollup Smart Contract
+//nolint:structcheck,unused
+type RollupForgeBatchArgs struct {
+	proofA      [2]*big.Int
+	proofB      [2][2]*big.Int
+	proofC      [2]*big.Int
+	newLastIdx  int64
+	newStRoot   *big.Int
+	newExitRoot *big.Int
+	// TODO: Replace compressedL1CoordinatorTx, l2TxsData, feeIdxCoordinator for vectors
+	compressedL1CoordinatorTx []byte
+	l2TxsData                 []byte
+	feeIdxCoordinator         []byte
+	verifierIdx               int64
+	l1Batch                   bool
+}
+
+// RollupInterface is the inteface to to Rollup Smart Contract
+type RollupInterface interface {
+	//
+	// Smart Contract Methods
+	//
+
+	// Public Functions
+
+	RollupForgeBatch(*RollupForgeBatchArgs) (*types.Transaction, error)
+	RollupAddToken(tokenAddress ethCommon.Address) (*types.Transaction, error)
+	// RollupWithdrawSNARK() (*types.Transaction, error) // TODO (Not defined in Hermez.sol)
+	RollupWithdrawMerkleProof(tokenID int64, balance *big.Int, babyPubKey *babyjub.PublicKey,
+		numExitRoot int64, siblings []*big.Int, idx int64, instantWithdraw bool) (*types.Transaction, error)
+	RollupForceExit(fromIdx int64, amountF utils.Float16, tokenID int64) (*types.Transaction, error)
+	RollupForceTransfer(fromIdx int64, amountF utils.Float16, tokenID, toIdx int64) (*types.Transaction, error)
+	RollupCreateAccountDepositTransfer(babyPubKey babyjub.PublicKey,
+		loadAmountF, amountF utils.Float16, tokenID int64, toIdx int64) (*types.Transaction, error)
+	RollupDepositTransfer(fromIdx int64, loadAmountF, amountF utils.Float16,
+		tokenID int64, toIdx int64) (*types.Transaction, error)
+	RollupDeposit(fromIdx int64, loadAmountF utils.Float16, tokenID int64) (*types.Transaction, error)
+	RollupCreateAccountDepositFromRelayer(accountCreationAuthSig []byte,
+		babyPubKey babyjub.PublicKey, loadAmountF utils.Float16) (*types.Transaction, error)
+	RollupCreateAccountDeposit(babyPubKey babyjub.PublicKey, loadAmountF utils.Float16,
+		tokenID int64) (*types.Transaction, error)
+
+	RollupGetTokenAddress(tokenID int64) (*ethCommon.Address, error)
+	RollupGetL1TxFromQueue(queue int64, position int64) ([]byte, error)
+	RollupGetQueue(queue int64) ([]byte, error)
+
+	// Governance Public Functions
+	RollupUpdateForgeL1Timeout(newForgeL1Timeout int64) (*types.Transaction, error)
+	RollupUpdateFeeL1UserTx(newFeeL1UserTx *big.Int) (*types.Transaction, error)
+	RollupUpdateFeeAddToken(newFeeAddToken *big.Int) (*types.Transaction, error)
+	RollupUpdateTokensHEZ(newTokenHEZ ethCommon.Address) (*types.Transaction, error)
+	// RollupUpdateGovernance() (*types.Transaction, error) // TODO (Not defined in Hermez.sol)
+
+	//
+	// Smart Contract Status
+	//
+
+	RollupConstants() (*RollupConstants, error)
+	RollupEventsByBlock(blockNum int64) (*RollupEvents, *ethCommon.Hash, error)
+	RollupForgeBatchArgs(*types.Transaction) (*RollupForgeBatchArgs, error)
+}
+
+//
+// Implementation
+//
+
+// RollupClient is the implementation of the interface to the Rollup Smart Contract in ethereum.
+type RollupClient struct {
+}
+
+// RollupForgeBatch is the interface to call the smart contract function
+func (c *RollupClient) RollupForgeBatch(args *RollupForgeBatchArgs) (*types.Transaction, error) {
+	return nil, errTODO
+}
+
+// RollupAddToken is the interface to call the smart contract function
+func (c *RollupClient) RollupAddToken(tokenAddress ethCommon.Address) (*types.Transaction, error) {
+	return nil, errTODO
+}
+
+// RollupWithdrawSNARK is the interface to call the smart contract function
+// func (c *RollupClient) RollupWithdrawSNARK() (*types.Transaction, error) { // TODO (Not defined in Hermez.sol)
+// 	return nil, errTODO
+// }
+
+// RollupWithdrawMerkleProof is the interface to call the smart contract function
+func (c *RollupClient) RollupWithdrawMerkleProof(tokenID int64, balance *big.Int, babyPubKey *babyjub.PublicKey, numExitRoot int64, siblings []*big.Int, idx int64, instantWithdraw bool) (*types.Transaction, error) {
+	return nil, errTODO
+}
+
+// RollupForceExit is the interface to call the smart contract function
+func (c *RollupClient) RollupForceExit(fromIdx int64, amountF utils.Float16, tokenID int64) (*types.Transaction, error) {
+	return nil, errTODO
+}
+
+// RollupForceTransfer is the interface to call the smart contract function
+func (c *RollupClient) RollupForceTransfer(fromIdx int64, amountF utils.Float16, tokenID, toIdx int64) (*types.Transaction, error) {
+	return nil, errTODO
+}
+
+// RollupCreateAccountDepositTransfer is the interface to call the smart contract function
+func (c *RollupClient) RollupCreateAccountDepositTransfer(babyPubKey babyjub.PublicKey, loadAmountF, amountF utils.Float16, tokenID int64, toIdx int64) (*types.Transaction, error) {
+	return nil, errTODO
+}
+
+// RollupDepositTransfer is the interface to call the smart contract function
+func (c *RollupClient) RollupDepositTransfer(fromIdx int64, loadAmountF, amountF utils.Float16, tokenID int64, toIdx int64) (*types.Transaction, error) {
+	return nil, errTODO
+}
+
+// RollupDeposit is the interface to call the smart contract function
+func (c *RollupClient) RollupDeposit(fromIdx int64, loadAmountF utils.Float16, tokenID int64) (*types.Transaction, error) {
+	return nil, errTODO
+}
+
+// RollupCreateAccountDepositFromRelayer is the interface to call the smart contract function
+func (c *RollupClient) RollupCreateAccountDepositFromRelayer(accountCreationAuthSig []byte, babyPubKey babyjub.PublicKey, loadAmountF utils.Float16) (*types.Transaction, error) {
+	return nil, errTODO
+}
+
+// RollupCreateAccountDeposit is the interface to call the smart contract function
+func (c *RollupClient) RollupCreateAccountDeposit(babyPubKey babyjub.PublicKey, loadAmountF utils.Float16, tokenID int64) (*types.Transaction, error) {
+	return nil, errTODO
+}
+
+// RollupGetTokenAddress is the interface to call the smart contract function
+func (c *RollupClient) RollupGetTokenAddress(tokenID int64) (*ethCommon.Address, error) {
+	return nil, errTODO
+}
+
+// RollupGetL1TxFromQueue is the interface to call the smart contract function
+func (c *RollupClient) RollupGetL1TxFromQueue(queue int64, position int64) ([]byte, error) {
+	return nil, errTODO
+}
+
+// RollupGetQueue is the interface to call the smart contract function
+func (c *RollupClient) RollupGetQueue(queue int64) ([]byte, error) {
+	return nil, errTODO
+}
+
+// RollupUpdateForgeL1Timeout is the interface to call the smart contract function
+func (c *RollupClient) RollupUpdateForgeL1Timeout(newForgeL1Timeout int64) (*types.Transaction, error) {
+	return nil, errTODO
+}
+
+// RollupUpdateFeeL1UserTx is the interface to call the smart contract function
+func (c *RollupClient) RollupUpdateFeeL1UserTx(newFeeL1UserTx *big.Int) (*types.Transaction, error) {
+	return nil, errTODO
+}
+
+// RollupUpdateFeeAddToken is the interface to call the smart contract function
+func (c *RollupClient) RollupUpdateFeeAddToken(newFeeAddToken *big.Int) (*types.Transaction, error) {
+	return nil, errTODO
+}
+
+// RollupUpdateTokensHEZ is the interface to call the smart contract function
+func (c *RollupClient) RollupUpdateTokensHEZ(newTokenHEZ ethCommon.Address) (*types.Transaction, error) {
+	return nil, errTODO
+}
+
+// RollupUpdateGovernance is the interface to call the smart contract function
+// func (c *RollupClient) RollupUpdateGovernance() (*types.Transaction, error) { // TODO (Not defined in Hermez.sol)
+// 	return nil, errTODO
+// }
+
+// RollupConstants returns the Constants of the Rollup Smart Contract
+func (c *RollupClient) RollupConstants() (*RollupConstants, error) {
+	return nil, errTODO
+}
+
+// RollupEventsByBlock returns the events in a block that happened in the Rollup Smart Contract
+func (c *RollupClient) RollupEventsByBlock(blockNum int64) (*RollupEvents, *ethCommon.Hash, error) {
+	return nil, nil, errTODO
+}
+
+// RollupForgeBatchArgs returns the arguments used in a ForgeBatch call in the Rollup Smart Contract in the given transaction
+func (c *RollupClient) RollupForgeBatchArgs(transaction *types.Transaction) (*RollupForgeBatchArgs, error) {
+	return nil, errTODO
+}

synchronizer/synchronizer.go

@@ -86,11 +86,11 @@ func (s *Synchronizer) Sync() error {
 
 	// TODO: Get this information from ethClient once it's implemented
 	// for the moment we will get the latestblock - 20 as firstSavedBlock
-	latestBlock, err := s.ethClient.BlockByNumber(context.Background(), nil)
+	latestBlock, err := s.ethClient.EthBlockByNumber(context.Background(), nil)
 	if err != nil {
 		return err
 	}
-	s.firstSavedBlock, err = s.ethClient.BlockByNumber(context.Background(), big.NewInt(int64(latestBlock.EthBlockNum-blocksToSync)))
+	s.firstSavedBlock, err = s.ethClient.EthBlockByNumber(context.Background(), big.NewInt(int64(latestBlock.EthBlockNum-blocksToSync)))
 	if err != nil {
 		return err
 	}
@@ -107,7 +107,7 @@ func (s *Synchronizer) Sync() error {
 		lastSavedBlock = s.firstSavedBlock
 	} else {
 		// Get the latest block we have in History DB from blockchain to detect a reorg
-		ethBlock, err := s.ethClient.BlockByNumber(context.Background(), big.NewInt(int64(lastSavedBlock.EthBlockNum)))
+		ethBlock, err := s.ethClient.EthBlockByNumber(context.Background(), big.NewInt(int64(lastSavedBlock.EthBlockNum)))
 		if err != nil {
 			return err
 		}
@@ -130,7 +130,7 @@ func (s *Synchronizer) Sync() error {
 	log.Debugf("Syncing...")
 
 	// Get latest blockNum in blockchain
-	latestBlockNum, err := s.ethClient.CurrentBlock()
+	latestBlockNum, err := s.ethClient.EthCurrentBlock()
 	if err != nil {
 		return err
 	}
@@ -138,7 +138,7 @@ func (s *Synchronizer) Sync() error {
 	log.Debugf("Blocks to sync: %v (lastSavedBlock: %v, latestBlock: %v)", latestBlockNum.Uint64()-lastSavedBlock.EthBlockNum, lastSavedBlock.EthBlockNum, latestBlockNum)
 
 	for lastSavedBlock.EthBlockNum < latestBlockNum.Uint64() {
-		ethBlock, err := s.ethClient.BlockByNumber(context.Background(), big.NewInt(int64(lastSavedBlock.EthBlockNum+1)))
+		ethBlock, err := s.ethClient.EthBlockByNumber(context.Background(), big.NewInt(int64(lastSavedBlock.EthBlockNum+1)))
 		if err != nil {
 			return err
 		}
@@ -181,7 +181,7 @@ func (s *Synchronizer) reorg(uncleBlock *common.Block) error {
 
 	// Iterate History DB and the blokchain looking for the latest valid block
 	for !found && blockNum > s.firstSavedBlock.EthBlockNum {
-		header, err := s.ethClient.HeaderByNumber(context.Background(), big.NewInt(int64(blockNum)))
+		header, err := s.ethClient.EthHeaderByNumber(context.Background(), big.NewInt(int64(blockNum)))
 		if err != nil {
 			return err
 		}
@@ -247,7 +247,7 @@ func (s *Synchronizer) Status() (*Status, error) {
 	status.CurrentBatch = lastSavedBatch
 
 	// Get latest blockNum in blockchain
-	latestBlockNum, err := s.ethClient.CurrentBlock()
+	latestBlockNum, err := s.ethClient.EthCurrentBlock()
 	if err != nil {
 		return nil, err
 	}

test/ethclient.go

@@ -2,24 +2,29 @@ package test
 
 import (
 	"context"
+	"fmt"
 	"math/big"
 	"time"
 
+	ethCommon "github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/core/types"
 	"github.com/hermeznetwork/hermez-node/common"
+	"github.com/hermeznetwork/hermez-node/eth"
 	"github.com/hermeznetwork/hermez-node/log"
+	"github.com/hermeznetwork/hermez-node/utils"
+	"github.com/iden3/go-iden3-crypto/babyjub"
 )
 
-// Client implements the eth.IClient interface, allowing to manipulate the
+// Client implements the eth.ClientInterface interface, allowing to manipulate the
 // values for testing, working with deterministic results.
 type Client struct {
 	log      bool
 	blockNum *big.Int
 }
 
-// NewTestEthClient returns a new test Client that implements the eth.IClient
+// NewClient returns a new test Client that implements the eth.IClient
 // interface, at the given initialBlockNumber.
-func NewTestEthClient(l bool, initialBlockNumber int64) *Client {
+func NewClient(l bool, initialBlockNumber int64) *Client {
 	return &Client{
 		log:      l,
 		blockNum: big.NewInt(initialBlockNumber),
@@ -42,8 +47,8 @@ func (c *Client) SetBlockNum(blockNum *big.Int) {
 	}
 }
 
-// CurrentBlock returns the current blockNum
-func (c *Client) CurrentBlock() (*big.Int, error) {
+// EthCurrentBlock returns the current blockNum
+func (c *Client) EthCurrentBlock() (*big.Int, error) {
 	return c.blockNum, nil
 }
 
@@ -54,15 +59,15 @@ func newHeader(number *big.Int) *types.Header {
 	}
 }
 
-// HeaderByNumber returns the *types.Header for the given block number in a
+// EthHeaderByNumber returns the *types.Header for the given block number in a
 // deterministic way.
-func (c *Client) HeaderByNumber(ctx context.Context, number *big.Int) (*types.Header, error) {
+func (c *Client) EthHeaderByNumber(ctx context.Context, number *big.Int) (*types.Header, error) {
 	return newHeader(number), nil
 }
 
-// BlockByNumber returns the *common.Block for the given block number in a
+// EthBlockByNumber returns the *common.Block for the given block number in a
 // deterministic way.
-func (c *Client) BlockByNumber(ctx context.Context, number *big.Int) (*common.Block, error) {
+func (c *Client) EthBlockByNumber(ctx context.Context, number *big.Int) (*common.Block, error) {
 	header := newHeader(number)
 
 	return &common.Block{
@@ -72,8 +77,265 @@ func (c *Client) BlockByNumber(ctx context.Context, number *big.Int) (*common.Bl
 	}, nil
 }
 
-// ForgeCall send the *common.CallDataForge to the Forge method of the mock
-// smart contract
-func (c *Client) ForgeCall(*common.CallDataForge) ([]byte, error) {
-	return nil, nil
+var errTODO = fmt.Errorf("TODO: Not implemented yet")
+
+//
+// Rollup
+//
+
+// RollupForgeBatch is the interface to call the smart contract function
+func (c *Client) RollupForgeBatch(*eth.RollupForgeBatchArgs) (*types.Transaction, error) {
+	return nil, errTODO
+}
+
+// RollupAddToken is the interface to call the smart contract function
+func (c *Client) RollupAddToken(tokenAddress ethCommon.Address) (*types.Transaction, error) {
+	return nil, errTODO
+}
+
+// RollupWithdrawSNARK is the interface to call the smart contract function
+// func (c *Client) RollupWithdrawSNARK() (*types.Transaction, error) { // TODO (Not defined in Hermez.sol)
+// 	return nil, errTODO
+// }
+
+// RollupWithdrawMerkleProof is the interface to call the smart contract function
+func (c *Client) RollupWithdrawMerkleProof(tokenID int64, balance *big.Int, babyPubKey *babyjub.PublicKey, numExitRoot int64, siblings []*big.Int, idx int64, instantWithdraw bool) (*types.Transaction, error) {
+	return nil, errTODO
+}
+
+// RollupForceExit is the interface to call the smart contract function
+func (c *Client) RollupForceExit(fromIdx int64, amountF utils.Float16, tokenID int64) (*types.Transaction, error) {
+	return nil, errTODO
+}
+
+// RollupForceTransfer is the interface to call the smart contract function
+func (c *Client) RollupForceTransfer(fromIdx int64, amountF utils.Float16, tokenID, toIdx int64) (*types.Transaction, error) {
+	return nil, errTODO
+}
+
+// RollupCreateAccountDepositTransfer is the interface to call the smart contract function
+func (c *Client) RollupCreateAccountDepositTransfer(babyPubKey babyjub.PublicKey, loadAmountF, amountF utils.Float16, tokenID int64, toIdx int64) (*types.Transaction, error) {
+	return nil, errTODO
+}
+
+// RollupDepositTransfer is the interface to call the smart contract function
+func (c *Client) RollupDepositTransfer(fromIdx int64, loadAmountF, amountF utils.Float16, tokenID int64, toIdx int64) (*types.Transaction, error) {
+	return nil, errTODO
+}
+
+// RollupDeposit is the interface to call the smart contract function
+func (c *Client) RollupDeposit(fromIdx int64, loadAmountF utils.Float16, tokenID int64) (*types.Transaction, error) {
+	return nil, errTODO
+}
+
+// RollupCreateAccountDepositFromRelayer is the interface to call the smart contract function
+func (c *Client) RollupCreateAccountDepositFromRelayer(accountCreationAuthSig []byte, babyPubKey babyjub.PublicKey, loadAmountF utils.Float16) (*types.Transaction, error) {
+	return nil, errTODO
+}
+
+// RollupCreateAccountDeposit is the interface to call the smart contract function
+func (c *Client) RollupCreateAccountDeposit(babyPubKey babyjub.PublicKey, loadAmountF utils.Float16, tokenID int64) (*types.Transaction, error) {
+	return nil, errTODO
+}
+
+// RollupGetTokenAddress is the interface to call the smart contract function
+func (c *Client) RollupGetTokenAddress(tokenID int64) (*ethCommon.Address, error) {
+	return nil, errTODO
+}
+
+// RollupGetL1TxFromQueue is the interface to call the smart contract function
+func (c *Client) RollupGetL1TxFromQueue(queue int64, position int64) ([]byte, error) {
+	return nil, errTODO
+}
+
+// RollupGetQueue is the interface to call the smart contract function
+func (c *Client) RollupGetQueue(queue int64) ([]byte, error) {
+	return nil, errTODO
+}
+
+// RollupUpdateForgeL1Timeout is the interface to call the smart contract function
+func (c *Client) RollupUpdateForgeL1Timeout(newForgeL1Timeout int64) (*types.Transaction, error) {
+	return nil, errTODO
+}
+
+// RollupUpdateFeeL1UserTx is the interface to call the smart contract function
+func (c *Client) RollupUpdateFeeL1UserTx(newFeeL1UserTx *big.Int) (*types.Transaction, error) {
+	return nil, errTODO
+}
+
+// RollupUpdateFeeAddToken is the interface to call the smart contract function
+func (c *Client) RollupUpdateFeeAddToken(newFeeAddToken *big.Int) (*types.Transaction, error) {
+	return nil, errTODO
+}
+
+// RollupUpdateTokensHEZ is the interface to call the smart contract function
+func (c *Client) RollupUpdateTokensHEZ(newTokenHEZ ethCommon.Address) (*types.Transaction, error) {
+	return nil, errTODO
+}
+
+// RollupUpdateGovernance is the interface to call the smart contract function
+// func (c *Client) RollupUpdateGovernance() (*types.Transaction, error) { // TODO (Not defined in Hermez.sol)
+// 	return nil, errTODO
+// }
+
+// RollupConstants returns the Constants of the Rollup Smart Contract
+func (c *Client) RollupConstants() (*eth.RollupConstants, error) {
+	return nil, errTODO
+}
+
+// RollupEventsByBlock returns the events in a block that happened in the Rollup Smart Contract
+func (c *Client) RollupEventsByBlock(blockNum int64) (*eth.RollupEvents, *ethCommon.Hash, error) {
+	return nil, nil, errTODO
+}
+
+// RollupForgeBatchArgs returns the arguments used in a ForgeBatch call in the Rollup Smart Contract in the given transaction
+func (c *Client) RollupForgeBatchArgs(transaction *types.Transaction) (*eth.RollupForgeBatchArgs, error) {
+	return nil, errTODO
+}
+
+//
+// Auction
+//
+
+// AuctionSetSlotDeadline is the interface to call the smart contract function
+func (c *Client) AuctionSetSlotDeadline(newDeadline uint8) (*types.Transaction, error) {
+	return nil, errTODO
+}
+
+// AuctionGetSlotDeadline is the interface to call the smart contract function
+func (c *Client) AuctionGetSlotDeadline() (uint8, error) {
+	return 0, errTODO
+}
+
+// AuctionSetOpenAuctionSlots is the interface to call the smart contract function
+func (c *Client) AuctionSetOpenAuctionSlots(newOpenAuctionSlots uint16) (*types.Transaction, error) {
+	return nil, errTODO
+}
+
+// AuctionGetOpenAuctionSlots is the interface to call the smart contract function
+func (c *Client) AuctionGetOpenAuctionSlots() (uint16, error) { return 0, errTODO }
+
+// AuctionSetClosedAuctionSlots is the interface to call the smart contract function
+func (c *Client) AuctionSetClosedAuctionSlots(newClosedAuctionSlots uint16) (*types.Transaction, error) {
+	return nil, errTODO
+}
+
+// AuctionGetClosedAuctionSlots is the interface to call the smart contract function
+func (c *Client) AuctionGetClosedAuctionSlots() (uint16, error) {
+	return 0, errTODO
+}
+
+// AuctionSetOutbidding is the interface to call the smart contract function
+func (c *Client) AuctionSetOutbidding(newOutbidding uint8) (*types.Transaction, error) {
+	return nil, errTODO
+}
+
+// AuctionGetOutbidding is the interface to call the smart contract function
+func (c *Client) AuctionGetOutbidding() (uint8, error) {
+	return 0, errTODO
+}
+
+// AuctionSetAllocationRatio is the interface to call the smart contract function
+func (c *Client) AuctionSetAllocationRatio(newAllocationRatio [3]uint8) (*types.Transaction, error) {
+	return nil, errTODO
+}
+
+// AuctionGetAllocationRatio is the interface to call the smart contract function
+func (c *Client) AuctionGetAllocationRatio() ([3]uint8, error) {
+	return [3]uint8{}, errTODO
+}
+
+// AuctionSetDonationAddress is the interface to call the smart contract function
+func (c *Client) AuctionSetDonationAddress(newDonationAddress ethCommon.Address) (*types.Transaction, error) {
+	return nil, errTODO
+}
+
+// AuctionGetDonationAddress is the interface to call the smart contract function
+func (c *Client) AuctionGetDonationAddress() (*ethCommon.Address, error) {
+	return nil, errTODO
+}
+
+// AuctionSetBootCoordinator is the interface to call the smart contract function
+func (c *Client) AuctionSetBootCoordinator(newBootCoordinator ethCommon.Address) (*types.Transaction, error) {
+	return nil, errTODO
+}
+
+// AuctionGetBootCoordinator is the interface to call the smart contract function
+func (c *Client) AuctionGetBootCoordinator() (*ethCommon.Address, error) {
+	return nil, errTODO
+}
+
+// AuctionChangeEpochMinBid is the interface to call the smart contract function
+func (c *Client) AuctionChangeEpochMinBid(slotEpoch int64, newInitialMinBid *big.Int) (*types.Transaction, error) {
+	return nil, errTODO
+}
+
+// AuctionRegisterCoordinator is the interface to call the smart contract function
+func (c *Client) AuctionRegisterCoordinator(forgerAddress ethCommon.Address, URL string) (*types.Transaction, error) {
+	return nil, errTODO
+}
+
+// AuctionIsRegisteredCoordinator is the interface to call the smart contract function
+func (c *Client) AuctionIsRegisteredCoordinator(forgerAddress ethCommon.Address) (bool, error) {
+	return false, errTODO
+}
+
+// AuctionUpdateCoordinatorInfo is the interface to call the smart contract function
+func (c *Client) AuctionUpdateCoordinatorInfo(forgerAddress ethCommon.Address, newWithdrawAddress ethCommon.Address, newURL string) (*types.Transaction, error) {
+	return nil, errTODO
+}
+
+// AuctionGetCurrentSlotNumber is the interface to call the smart contract function
+func (c *Client) AuctionGetCurrentSlotNumber() (int64, error) {
+	return 0, errTODO
+}
+
+// AuctionGetMinBidBySlot is the interface to call the smart contract function
+func (c *Client) AuctionGetMinBidBySlot(slot int64) (*big.Int, error) {
+	return nil, errTODO
+}
+
+// AuctionGetMinBidEpoch is the interface to call the smart contract function
+func (c *Client) AuctionGetMinBidEpoch(epoch uint8) (*big.Int, error) {
+	return nil, errTODO
+}
+
+// AuctionTokensReceived is the interface to call the smart contract function
+// func (c *Client) AuctionTokensReceived(operator, from, to ethCommon.Address, amount *big.Int, userData, operatorData []byte) error {
+// 	return errTODO
+// }
+
+// AuctionBid is the interface to call the smart contract function
+func (c *Client) AuctionBid(slot int64, bidAmount *big.Int, forger ethCommon.Address) (*types.Transaction, error) {
+	return nil, errTODO
+}
+
+// AuctionMultiBid is the interface to call the smart contract function
+func (c *Client) AuctionMultiBid(startingSlot int64, endingSlot int64, slotEpoch [6]bool, maxBid, closedMinBid, budget *big.Int, forger ethCommon.Address) (*types.Transaction, error) {
+	return nil, errTODO
+}
+
+// AuctionCanForge is the interface to call the smart contract function
+func (c *Client) AuctionCanForge(forger ethCommon.Address) (bool, error) {
+	return false, errTODO
+}
+
+// AuctionForge is the interface to call the smart contract function
+// func (c *Client) AuctionForge(forger ethCommon.Address) (bool, error) {
+// 	return false, errTODO
+// }
+
+// AuctionClaimHEZ is the interface to call the smart contract function
+func (c *Client) AuctionClaimHEZ() (*types.Transaction, error) {
+	return nil, errTODO
+}
+
+// AuctionConstants returns the Constants of the Auction Smart Contract
+func (c *Client) AuctionConstants() (*eth.AuctionConstants, error) {
+	return nil, errTODO
+}
+
+// AuctionEventsByBlock returns the events in a block that happened in the Auction Smart Contract
+func (c *Client) AuctionEventsByBlock(blockNum int64) (*eth.AuctionEvents, *ethCommon.Hash, error) {
+	return nil, nil, errTODO
 }

test/ethclient_test.go

@@ -13,21 +13,21 @@ import (
 
 func TestClientInterface(t *testing.T) {
 	var c eth.ClientInterface
-	client := NewTestEthClient(true, 1000)
+	client := NewClient(true, 1000)
 	c = client
 	require.NotNil(t, c)
 }
 
 func TestEthClient(t *testing.T) {
-	c := NewTestEthClient(true, 1000)
+	c := NewClient(true, 1000)
 
-	block, err := c.BlockByNumber(context.TODO(), big.NewInt(3))
+	block, err := c.EthBlockByNumber(context.TODO(), big.NewInt(3))
 	assert.Nil(t, err)
 	assert.Equal(t, uint64(3), block.EthBlockNum)
 	assert.Equal(t, time.Unix(3, 0), block.Timestamp)
 	assert.Equal(t, "0x6b0ab5a7a0ebf5f05cef3b49bc7a9739de06469a4e05557d802ee828fdf5187e", block.Hash.Hex())
 
-	header, err := c.HeaderByNumber(context.TODO(), big.NewInt(4))
+	header, err := c.EthHeaderByNumber(context.TODO(), big.NewInt(4))
 	assert.Nil(t, err)
 	assert.Equal(t, big.NewInt(4), header.Number)
 	assert.Equal(t, uint64(4), header.Time)