Update synchronizer and DB with last contracts updates

- API
	- When updating network info, handle cases where no batches exists and
	  where no forgers exists
- cli/node
	- Update `cfg.buidler.toml` config file to a working version
- common
	- Add new smart contract structs and extend some existing ones to
	  reflect updates regarding events from the smart contracts
- SQL
	- Add new tables and extend existing ones to reflect updates regarding
	  events from the smart contracts
- db/historydb
	- Add functions to insert new smart contract events data
	- Fix unclosed rows that led to inconsistent sql driver state (replace
	  NamedQuery by NamedExec).  This fixes the error:
	  `pq: unexpected Parse response 'C'`
- db/l2db
	- Close rows after usage
- eth
	- In Rollup event, introduce a new UpdateBucketsParameter when there's a
	  SafeMode event, with `SafeMode = true`
- synchronizer
	- synchronize new events
	- avoid calling `auction.CanForge` before the genesisBlock to avoid
	  getting a revert.

common/block.go

@@ -18,11 +18,13 @@ type Block struct {
 // RollupData contains information returned by the Rollup smart contract
 type RollupData struct {
 	// L1UserTxs that were submitted in the block
-	L1UserTxs   []L1Tx
-	Batches     []BatchData
-	AddedTokens []Token
-	Withdrawals []WithdrawInfo
-	Vars        *RollupVariables
+	L1UserTxs            []L1Tx
+	Batches              []BatchData
+	AddedTokens          []Token
+	Withdrawals          []WithdrawInfo
+	UpdateBucketWithdraw []BucketUpdate
+	TokenExchanges       []TokenExchange
+	Vars                 *RollupVariables
 }
 
 // NewRollupData creates an empty RollupData with the slices initialized.
@@ -66,8 +68,9 @@ type WDelayerData struct {
 	Vars     *WDelayerVariables
 	Deposits []WDelayerTransfer
 	// We use an array because there can be multiple deposits in a single eth transaction
-	DepositsByTxHash map[ethCommon.Hash][]*WDelayerTransfer
-	Withdrawals      []WDelayerTransfer
+	DepositsByTxHash       map[ethCommon.Hash][]*WDelayerTransfer
+	Withdrawals            []WDelayerTransfer
+	EscapeHatchWithdrawals []WDelayerEscapeHatchWithdrawal
 }
 
 // NewWDelayerData creates an empty WDelayerData.

common/ethrollup.go

@@ -146,22 +146,40 @@ type RollupConstants struct {
 	WithdrawDelayerContract     ethCommon.Address      `json:"withdrawDelayerContract"`
 }
 
-// Bucket are the variables of each Bucket of Rollup Smart Contract
-type Bucket struct {
-	CeilUSD             uint64 `json:"ceilUSD"`
-	BlockStamp          uint64 `json:"blockStamp"`
-	Withdrawals         uint64 `json:"withdrawals"`
-	BlockWithdrawalRate uint64 `json:"blockWithdrawalRate"`
-	MaxWithdrawals      uint64 `json:"maxWithdrawals"`
+// BucketParams are the parameter variables of each Bucket of Rollup Smart
+// Contract
+type BucketParams struct {
+	CeilUSD             *big.Int `json:"ceilUSD"`
+	Withdrawals         *big.Int `json:"withdrawals"`
+	BlockWithdrawalRate *big.Int `json:"blockWithdrawalRate"`
+	MaxWithdrawals      *big.Int `json:"maxWithdrawals"`
+}
+
+// BucketUpdate are the bucket updates (tracking the withdrawals value changes)
+// in Rollup Smart Contract
+type BucketUpdate struct {
+	EthBlockNum int64    `json:"ethereumBlockNum" meddler:"eth_block_num"`
+	NumBucket   int      `json:"numBucket" meddler:"num_bucket"`
+	BlockStamp  int64    `json:"blockStamp" meddler:"block_stamp"`
+	Withdrawals *big.Int `json:"withdrawals" meddler:"withdrawals,bigint"`
+}
+
+// TokenExchange are the exchange value for tokens registered in the Rollup
+// Smart Contract
+type TokenExchange struct {
+	EthBlockNum int64             `json:"ethereumBlockNum" meddler:"eth_block_num"`
+	Address     ethCommon.Address `json:"address" meddler:"eth_addr"`
+	ValueUSD    int64             `json:"valueUSD" meddler:"value_usd"`
 }
 
 // RollupVariables are the variables of the Rollup Smart Contract
 type RollupVariables struct {
-	EthBlockNum           int64                         `json:"ethereumBlockNum" meddler:"eth_block_num"`
-	FeeAddToken           *big.Int                      `json:"feeAddToken" meddler:"fee_add_token,bigint" validate:"required"`
-	ForgeL1L2BatchTimeout int64                         `json:"forgeL1L2BatchTimeout" meddler:"forge_l1_timeout" validate:"required"`
-	WithdrawalDelay       uint64                        `json:"withdrawalDelay" meddler:"withdrawal_delay" validate:"required"`
-	Buckets               [RollupConstNumBuckets]Bucket `json:"buckets" meddler:"buckets,json"`
+	EthBlockNum           int64                               `json:"ethereumBlockNum" meddler:"eth_block_num"`
+	FeeAddToken           *big.Int                            `json:"feeAddToken" meddler:"fee_add_token,bigint" validate:"required"`
+	ForgeL1L2BatchTimeout int64                               `json:"forgeL1L2BatchTimeout" meddler:"forge_l1_timeout" validate:"required"`
+	WithdrawalDelay       uint64                              `json:"withdrawalDelay" meddler:"withdrawal_delay" validate:"required"`
+	Buckets               [RollupConstNumBuckets]BucketParams `json:"buckets" meddler:"buckets,json"`
+	SafeMode              bool                                `json:"safeMode" meddler:"safe_mode"`
 }
 
 // Copy returns a deep copy of the Variables

common/ethwdelayer.go

@@ -1,6 +1,10 @@
 package common
 
-import ethCommon "github.com/ethereum/go-ethereum/common"
+import (
+	"math/big"
+
+	ethCommon "github.com/ethereum/go-ethereum/common"
+)
 
 // WDelayerConstants are the constants of the Withdrawal Delayer Smart Contract
 type WDelayerConstants struct {
@@ -12,6 +16,16 @@ type WDelayerConstants struct {
 	HermezRollup ethCommon.Address `json:"hermezRollup"`
 }
 
+// WDelayerEscapeHatchWithdrawal is an escape hatch withdrawal of the
+// Withdrawal Delayer Smart Contract
+type WDelayerEscapeHatchWithdrawal struct {
+	EthBlockNum int64             `json:"ethereumBlockNum" meddler:"eth_block_num"`
+	Who         ethCommon.Address `json:"who" meddler:"who_addr"`
+	To          ethCommon.Address `json:"to" meddler:"to_addr"`
+	TokenAddr   ethCommon.Address `json:"tokenAddr" meddler:"token_addr"`
+	Amount      *big.Int          `json:"amount" meddler:"amount,bigint"`
+}
+
 // WDelayerVariables are the variables of the Withdrawal Delayer Smart Contract
 type WDelayerVariables struct {
 	EthBlockNum int64 `json:"ethereumBlockNum" meddler:"eth_block_num"`

common/l1tx.go

@@ -228,12 +228,12 @@ func L1TxFromDataAvailability(b []byte, nLevels uint32) (*L1Tx, error) {
 	l1tx := L1Tx{}
 	fromIdx, err := IdxFromBytes(ethCommon.LeftPadBytes(fromIdxBytes, 6))
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	l1tx.FromIdx = fromIdx
 	toIdx, err := IdxFromBytes(ethCommon.LeftPadBytes(toIdxBytes, 6))
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	l1tx.ToIdx = toIdx
 	l1tx.EffectiveAmount = Float16FromBytes(amountBytes).BigInt()