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.

api/state.go

@@ -1,6 +1,7 @@
 package api
 
 import (
+	"database/sql"
 	"net/http"
 	"time"
 
@@ -13,11 +14,11 @@ import (
 
 // Network define status of the network
 type Network struct {
-	LastEthBlock  int64              `json:"lastEthereumBlock"`
-	LastSyncBlock int64              `json:"lastSynchedBlock"`
-	LastBatch     historydb.BatchAPI `json:"lastBatch"`
-	CurrentSlot   int64              `json:"currentSlot"`
-	NextForgers   []NextForger       `json:"nextForgers"`
+	LastEthBlock  int64               `json:"lastEthereumBlock"`
+	LastSyncBlock int64               `json:"lastSynchedBlock"`
+	LastBatch     *historydb.BatchAPI `json:"lastBatch"`
+	CurrentSlot   int64               `json:"currentSlot"`
+	NextForgers   []NextForger        `json:"nextForgers"`
 }
 
 // NextForger  is a representation of the information of a coordinator and the period will forge
@@ -89,18 +90,22 @@ func (a *API) UpdateNetworkInfo(
 	lastBatchNum common.BatchNum, currentSlot int64,
 ) error {
 	lastBatch, err := a.h.GetBatchAPI(lastBatchNum)
-	if err != nil {
+	if tracerr.Unwrap(err) == sql.ErrNoRows {
+		lastBatch = nil
+	} else if err != nil {
 		return tracerr.Wrap(err)
 	}
 	lastClosedSlot := currentSlot + int64(a.status.Auction.ClosedAuctionSlots)
 	nextForgers, err := a.getNextForgers(lastSyncBlock, currentSlot, lastClosedSlot)
-	if err != nil {
+	if tracerr.Unwrap(err) == sql.ErrNoRows {
+		nextForgers = nil
+	} else if err != nil {
 		return tracerr.Wrap(err)
 	}
 	a.status.Lock()
 	a.status.Network.LastSyncBlock = lastSyncBlock.Num
 	a.status.Network.LastEthBlock = lastEthBlock.Num
-	a.status.Network.LastBatch = *lastBatch
+	a.status.Network.LastBatch = lastBatch
 	a.status.Network.CurrentSlot = currentSlot
 	a.status.Network.NextForgers = nextForgers
 	a.status.Unlock()
@@ -157,6 +162,10 @@ func (a *API) getNextForgers(lastBlock common.Block, currentSlot, lastClosedSlot
 // UpdateMetrics update Status.Metrics information
 func (a *API) UpdateMetrics() error {
 	a.status.RLock()
+	if a.status.Network.LastBatch == nil {
+		a.status.RUnlock()
+		return nil
+	}
 	batchNum := a.status.Network.LastBatch.BatchNum
 	a.status.RUnlock()
 	metrics, err := a.h.GetMetrics(batchNum)

cli/node/cfg.buidler.toml

@@ -25,20 +25,21 @@ SyncLoopInterval = "1s"
 StatsRefreshPeriod = "1s"
 
     [Synchronizer.StartBlockNum]
-    Rollup = 1
-    Auction = 1
-    WDelayer = 1
+    Rollup = 6
+    Auction = 3
+    WDelayer = 7
 
 [SmartContracts]
-Rollup   = "0x6F4e99522F4eB37e0B73D0C0373147893EF12fD5"
-Auction  = "0x5E0816F0f8bC560cB2B9e9C87187BeCac8c2021F"
-WDelayer = "0x5D94e3e7aeC542aB0F9129B9a7BAdeb5B3Ca0f77"
-TokenHEZ = "0x2b7dEe2CF60484325716A1c6A193519c8c3b19F3"
+Rollup   = "0x8EEaea23686c319133a7cC110b840d1591d9AeE0"
+Auction  = "0x317113D2593e3efF1FfAE0ba2fF7A61861Df7ae5"
+WDelayer = "0x5E0816F0f8bC560cB2B9e9C87187BeCac8c2021F"
+TokenHEZ = "0x5D94e3e7aeC542aB0F9129B9a7BAdeb5B3Ca0f77"
 TokenHEZName = "Hermez Network Token"
 
     [Synchronizer.InitialVariables.Auction]
     DonationAddress = "0x0000000000000000000000000000000000000001"
     BootCoordinator = "0xb4124cEB3451635DAcedd11767f004d8a28c6eE7"
+    BootCoordinatorURL = "https://boot.coordinator.io"
     DefaultSlotSetBid = [
         "10000000000000000000",
         "10000000000000000000",
@@ -47,6 +48,7 @@ TokenHEZName = "Hermez Network Token"
         "10000000000000000000",
         "10000000000000000000",
     ]
+    DefaultSlotSetBidSlotNum = 0
     ClosedAuctionSlots = 2
     OpenAuctionSlots = 4320
     AllocationRatio = [4000, 4000, 2000]
@@ -55,9 +57,8 @@ TokenHEZName = "Hermez Network Token"
 
     [Synchronizer.InitialVariables.WDelayer]
 	# HermezRollupAddress        =
-	HermezGovernanceDAOAddress = "0x0000000000000000000000000000000000000001"
-	WhiteHackGroupAddress      = "0x0000000000000000000000000000000000000001"
-	HermezKeeperAddress        = "0x0000000000000000000000000000000000000001"
+	HermezGovernanceAddress    = "0x0000000000000000000000000000000000000001"
+	EmergencyCouncilAddress    = "0x0000000000000000000000000000000000000001"
 	WithdrawalDelay            = 60
 	EmergencyModeStartingTime  = 0
 	EmergencyMode              = false
@@ -66,33 +67,29 @@ TokenHEZName = "Hermez Network Token"
     FeeAddToken = "10"
     ForgeL1L2BatchTimeout = 10
     WithdrawalDelay = 1209600 # 60 * 60 * 24 * 7 * 2
-        # [[Synchronizer.InitialVariables.Rollup.Buckets]]
-        # CeilUSD             = 0
-        # BlockStamp          = 0
-        # Withdrawals         = 0
-        # BlockWithdrawalRate = 0
-        # MaxWithdrawals      = 0
-        # [[Synchronizer.InitialVariables.Rollup.Buckets]]
-        # CeilUSD             = 0
-        # BlockStamp          = 0
-        # Withdrawals         = 0
-        # BlockWithdrawalRate = 0
-        # MaxWithdrawals      = 0
-        # [[Synchronizer.InitialVariables.Rollup.Buckets]]
-        # CeilUSD             = 0
-        # BlockStamp          = 0
-        # Withdrawals         = 0
-        # BlockWithdrawalRate = 0
-        # MaxWithdrawals      = 0
-        # [[Synchronizer.InitialVariables.Rollup.Buckets]]
-        # CeilUSD             = 0
-        # BlockStamp          = 0
-        # Withdrawals         = 0
-        # BlockWithdrawalRate = 0
-        # MaxWithdrawals      = 0
-        # [[Synchronizer.InitialVariables.Rollup.Buckets]]
-        # CeilUSD             = 0
-        # BlockStamp          = 0
-        # Withdrawals         = 0
-        # BlockWithdrawalRate = 0
-        # MaxWithdrawals      = 0
+    SafeMode = false
+        [[Synchronizer.InitialVariables.Rollup.Buckets]]
+        CeilUSD             = 0
+        Withdrawals         = 0
+        BlockWithdrawalRate = 0
+        MaxWithdrawals      = 0
+        [[Synchronizer.InitialVariables.Rollup.Buckets]]
+        CeilUSD             = 0
+        Withdrawals         = 0
+        BlockWithdrawalRate = 0
+        MaxWithdrawals      = 0
+        [[Synchronizer.InitialVariables.Rollup.Buckets]]
+        CeilUSD             = 0
+        Withdrawals         = 0
+        BlockWithdrawalRate = 0
+        MaxWithdrawals      = 0
+        [[Synchronizer.InitialVariables.Rollup.Buckets]]
+        CeilUSD             = 0
+        Withdrawals         = 0
+        BlockWithdrawalRate = 0
+        MaxWithdrawals      = 0
+        [[Synchronizer.InitialVariables.Rollup.Buckets]]
+        CeilUSD             = 0
+        Withdrawals         = 0
+        BlockWithdrawalRate = 0
+        MaxWithdrawals      = 0

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()

coordinator/coordinator.go

@@ -244,17 +244,17 @@ func (c *Coordinator) handleMsgSyncBlock(ctx context.Context, msg *MsgSyncBlock)
 		// }
 		if c.purger.CanInvalidate(stats.Sync.LastBlock.Num, stats.Sync.LastBatch) {
 			if err := c.txSelector.Reset(common.BatchNum(stats.Sync.LastBatch)); err != nil {
-				return err
+				return tracerr.Wrap(err)
 			}
 		}
 		_, err := c.purger.InvalidateMaybe(c.l2DB, c.txSelector.LocalAccountsDB(),
 			stats.Sync.LastBlock.Num, stats.Sync.LastBatch)
 		if err != nil {
-			return err
+			return tracerr.Wrap(err)
 		}
 		_, err = c.purger.PurgeMaybe(c.l2DB, stats.Sync.LastBlock.Num, stats.Sync.LastBatch)
 		if err != nil {
-			return err
+			return tracerr.Wrap(err)
 		}
 	}
 	return nil
@@ -723,7 +723,7 @@ func (p *Pipeline) forgeSendServerProof(ctx context.Context, batchNum common.Bat
 	_, err := p.purger.InvalidateMaybe(p.l2DB, p.txSelector.LocalAccountsDB(),
 		p.stats.Sync.LastBlock.Num, int64(batchNum))
 	if err != nil {
-		return nil, err
+		return nil, tracerr.Wrap(err)
 	}
 	_, err = p.purger.PurgeMaybe(p.l2DB, p.stats.Sync.LastBlock.Num, int64(batchNum))
 	if err != nil {

coordinator/purger.go

@@ -78,7 +78,7 @@ func (p *Purger) InvalidateMaybe(l2DB *l2db.L2DB, stateDB *statedb.LocalStateDB,
 	p.lastInvalidateBatch = batchNum
 	log.Debugw("Purger: invalidating l2txs in pool", "block", blockNum, "batch", batchNum)
 	err := poolMarkInvalidOldNonces(l2DB, stateDB, common.BatchNum(batchNum))
-	return true, err
+	return true, tracerr.Wrap(err)
 }
 
 //nolint:unused,deadcode
@@ -129,20 +129,20 @@ func poolMarkInvalidOldNonces(l2DB *l2db.L2DB, stateDB *statedb.LocalStateDB,
 	batchNum common.BatchNum) error {
 	idxs, err := l2DB.GetPendingUniqueFromIdxs()
 	if err != nil {
-		return err
+		return tracerr.Wrap(err)
 	}
 	idxsNonce := make([]common.IdxNonce, len(idxs))
 	lastIdx, err := stateDB.GetIdx()
 	if err != nil {
-		return err
+		return tracerr.Wrap(err)
 	}
 	for i, idx := range idxs {
 		acc, err := stateDB.GetAccount(idx)
 		if err != nil {
 			if tracerr.Unwrap(err) != db.ErrNotFound {
-				return err
+				return tracerr.Wrap(err)
 			} else if idx <= lastIdx {
-				return fmt.Errorf("account with idx %v not found: %w", idx, err)
+				return tracerr.Wrap(fmt.Errorf("account with idx %v not found: %w", idx, err))
 			}
 		}
 		idxsNonce[i].Idx = idx

db/historydb/historydb.go

@@ -47,16 +47,16 @@ func (hdb *HistoryDB) DB() *sqlx.DB {
 // AddBlock insert a block into the DB
 func (hdb *HistoryDB) AddBlock(block *common.Block) error { return hdb.addBlock(hdb.db, block) }
 func (hdb *HistoryDB) addBlock(d meddler.DB, block *common.Block) error {
-	return meddler.Insert(d, "block", block)
+	return tracerr.Wrap(meddler.Insert(d, "block", block))
 }
 
 // AddBlocks inserts blocks into the DB
 func (hdb *HistoryDB) AddBlocks(blocks []common.Block) error {
-	return hdb.addBlocks(hdb.db, blocks)
+	return tracerr.Wrap(hdb.addBlocks(hdb.db, blocks))
 }
 
 func (hdb *HistoryDB) addBlocks(d meddler.DB, blocks []common.Block) error {
-	return db.BulkInsert(
+	return tracerr.Wrap(db.BulkInsert(
 		d,
 		`INSERT INTO block (
 			eth_block_num,
@@ -64,7 +64,7 @@ func (hdb *HistoryDB) addBlocks(d meddler.DB, blocks []common.Block) error {
 			hash
 		) VALUES %s;`,
 		blocks[:],
-	)
+	))
 }
 
 // GetBlock retrieve a block from the DB, given a block number
@@ -125,7 +125,7 @@ func (hdb *HistoryDB) addBatch(d meddler.DB, batch *common.Batch) error {
 	var tokenPrices []*tokenPrice
 	if len(tokenIDs) > 0 {
 		query, args, err := sqlx.In(
-			"SELECT token_id, usd, decimals FROM token WHERE token_id IN (?)",
+			"SELECT token_id, usd, decimals FROM token WHERE token_id IN (?);",
 			tokenIDs,
 		)
 		if err != nil {
@@ -150,12 +150,12 @@ func (hdb *HistoryDB) addBatch(d meddler.DB, batch *common.Batch) error {
 	}
 	batch.TotalFeesUSD = &total
 	// Insert to DB
-	return meddler.Insert(d, "batch", batch)
+	return tracerr.Wrap(meddler.Insert(d, "batch", batch))
 }
 
 // AddBatches insert Bids into the DB
 func (hdb *HistoryDB) AddBatches(batches []common.Batch) error {
-	return hdb.addBatches(hdb.db, batches)
+	return tracerr.Wrap(hdb.addBatches(hdb.db, batches))
 }
 func (hdb *HistoryDB) addBatches(d meddler.DB, batches []common.Batch) error {
 	for i := 0; i < len(batches); i++ {
@@ -169,12 +169,12 @@ func (hdb *HistoryDB) addBatches(d meddler.DB, batches []common.Batch) error {
 // GetBatchAPI return the batch with the given batchNum
 func (hdb *HistoryDB) GetBatchAPI(batchNum common.BatchNum) (*BatchAPI, error) {
 	batch := &BatchAPI{}
-	return batch, meddler.QueryRow(
+	return batch, tracerr.Wrap(meddler.QueryRow(
 		hdb.db, batch,
 		`SELECT batch.*, block.timestamp, block.hash
 	 	FROM batch INNER JOIN block ON batch.eth_block_num = block.eth_block_num
 	 	WHERE batch_num = $1;`, batchNum,
-	)
+	))
 }
 
 // GetBatchesAPI return the batches applying the given filters
@@ -295,14 +295,14 @@ func (hdb *HistoryDB) GetBatches(from, to common.BatchNum) ([]common.Batch, erro
 func (hdb *HistoryDB) GetBatchesLen(slotNum int64) (int, error) {
 	row := hdb.db.QueryRow("SELECT COUNT(*) FROM batch WHERE slot_num = $1;", slotNum)
 	var batchesLen int
-	return batchesLen, row.Scan(&batchesLen)
+	return batchesLen, tracerr.Wrap(row.Scan(&batchesLen))
 }
 
 // GetLastBatchNum returns the BatchNum of the latest forged batch
 func (hdb *HistoryDB) GetLastBatchNum() (common.BatchNum, error) {
 	row := hdb.db.QueryRow("SELECT batch_num FROM batch ORDER BY batch_num DESC LIMIT 1;")
 	var batchNum common.BatchNum
-	return batchNum, row.Scan(&batchNum)
+	return batchNum, tracerr.Wrap(row.Scan(&batchNum))
 }
 
 // GetLastL1BatchBlockNum returns the blockNum of the latest forged l1Batch
@@ -311,7 +311,7 @@ func (hdb *HistoryDB) GetLastL1BatchBlockNum() (int64, error) {
 		WHERE forge_l1_txs_num IS NOT NULL
 		ORDER BY batch_num DESC LIMIT 1;`)
 	var blockNum int64
-	return blockNum, row.Scan(&blockNum)
+	return blockNum, tracerr.Wrap(row.Scan(&blockNum))
 }
 
 // GetLastL1TxsNum returns the greatest ForgeL1TxsNum in the DB from forged
@@ -319,7 +319,7 @@ func (hdb *HistoryDB) GetLastL1BatchBlockNum() (int64, error) {
 func (hdb *HistoryDB) GetLastL1TxsNum() (*int64, error) {
 	row := hdb.db.QueryRow("SELECT MAX(forge_l1_txs_num) FROM batch;")
 	lastL1TxsNum := new(int64)
-	return lastL1TxsNum, row.Scan(&lastL1TxsNum)
+	return lastL1TxsNum, tracerr.Wrap(row.Scan(&lastL1TxsNum))
 }
 
 // Reorg deletes all the information that was added into the DB after the
@@ -338,12 +338,15 @@ func (hdb *HistoryDB) Reorg(lastValidBlock int64) error {
 // AddBids insert Bids into the DB
 func (hdb *HistoryDB) AddBids(bids []common.Bid) error { return hdb.addBids(hdb.db, bids) }
 func (hdb *HistoryDB) addBids(d meddler.DB, bids []common.Bid) error {
+	if len(bids) == 0 {
+		return nil
+	}
 	// TODO: check the coordinator info
-	return db.BulkInsert(
+	return tracerr.Wrap(db.BulkInsert(
 		d,
 		"INSERT INTO bid (slot_num, bid_value, eth_block_num, bidder_addr) VALUES %s;",
 		bids[:],
-	)
+	))
 }
 
 // GetAllBids retrieve all bids from the DB
@@ -508,31 +511,40 @@ func (hdb *HistoryDB) GetBidsAPI(
 
 // AddCoordinators insert Coordinators into the DB
 func (hdb *HistoryDB) AddCoordinators(coordinators []common.Coordinator) error {
-	return hdb.addCoordinators(hdb.db, coordinators)
+	return tracerr.Wrap(hdb.addCoordinators(hdb.db, coordinators))
 }
 func (hdb *HistoryDB) addCoordinators(d meddler.DB, coordinators []common.Coordinator) error {
-	return db.BulkInsert(
+	if len(coordinators) == 0 {
+		return nil
+	}
+	return tracerr.Wrap(db.BulkInsert(
 		d,
 		"INSERT INTO coordinator (bidder_addr, forger_addr, eth_block_num, url) VALUES %s;",
 		coordinators[:],
-	)
+	))
 }
 
 // AddExitTree insert Exit tree into the DB
 func (hdb *HistoryDB) AddExitTree(exitTree []common.ExitInfo) error {
-	return hdb.addExitTree(hdb.db, exitTree)
+	return tracerr.Wrap(hdb.addExitTree(hdb.db, exitTree))
 }
 func (hdb *HistoryDB) addExitTree(d meddler.DB, exitTree []common.ExitInfo) error {
-	return db.BulkInsert(
+	if len(exitTree) == 0 {
+		return nil
+	}
+	return tracerr.Wrap(db.BulkInsert(
 		d,
 		"INSERT INTO exit_tree (batch_num, account_idx, merkle_proof, balance, "+
 			"instant_withdrawn, delayed_withdraw_request, delayed_withdrawn) VALUES %s;",
 		exitTree[:],
-	)
+	))
 }
 
 func (hdb *HistoryDB) updateExitTree(d sqlx.Ext, blockNum int64,
 	rollupWithdrawals []common.WithdrawInfo, wDelayerWithdrawals []common.WDelayerTransfer) error {
+	if len(rollupWithdrawals) == 0 && len(wDelayerWithdrawals) == 0 {
+		return nil
+	}
 	type withdrawal struct {
 		BatchNum               int64              `db:"batch_num"`
 		AccountIdx             int64              `db:"account_idx"`
@@ -589,10 +601,10 @@ func (hdb *HistoryDB) updateExitTree(d sqlx.Ext, blockNum int64,
 		) as d (batch_num, account_idx, instant_withdrawn, delayed_withdraw_request, delayed_withdrawn, owner, token)
 		WHERE
 			(d.batch_num IS NOT NULL AND e.batch_num = d.batch_num AND e.account_idx = d.account_idx) OR
-			(d.delayed_withdrawn IS NOT NULL AND e.delayed_withdrawn IS NULL AND e.owner = d.owner AND e.token = d.token)
+			(d.delayed_withdrawn IS NOT NULL AND e.delayed_withdrawn IS NULL AND e.owner = d.owner AND e.token = d.token);
 		`
 	if len(withdrawals) > 0 {
-		if _, err := sqlx.NamedQuery(d, query, withdrawals); err != nil {
+		if _, err := sqlx.NamedExec(d, query, withdrawals); err != nil {
 			return tracerr.Wrap(err)
 		}
 	}
@@ -602,13 +614,16 @@ func (hdb *HistoryDB) updateExitTree(d sqlx.Ext, blockNum int64,
 
 // AddToken insert a token into the DB
 func (hdb *HistoryDB) AddToken(token *common.Token) error {
-	return meddler.Insert(hdb.db, "token", token)
+	return tracerr.Wrap(meddler.Insert(hdb.db, "token", token))
 }
 
 // AddTokens insert tokens into the DB
 func (hdb *HistoryDB) AddTokens(tokens []common.Token) error { return hdb.addTokens(hdb.db, tokens) }
 func (hdb *HistoryDB) addTokens(d meddler.DB, tokens []common.Token) error {
-	return db.BulkInsert(
+	if len(tokens) == 0 {
+		return nil
+	}
+	return tracerr.Wrap(db.BulkInsert(
 		d,
 		`INSERT INTO token (
 			token_id,
@@ -619,7 +634,7 @@ func (hdb *HistoryDB) addTokens(d meddler.DB, tokens []common.Token) error {
 			decimals
 		) VALUES %s;`,
 		tokens[:],
-	)
+	))
 }
 
 // UpdateTokenValue updates the USD value of a token
@@ -728,6 +743,7 @@ func (hdb *HistoryDB) GetTokenSymbols() ([]string, error) {
 	if err != nil {
 		return nil, tracerr.Wrap(err)
 	}
+	defer db.RowsClose(rows)
 	sym := new(string)
 	for rows.Next() {
 		err = rows.Scan(sym)
@@ -741,10 +757,13 @@ func (hdb *HistoryDB) GetTokenSymbols() ([]string, error) {
 
 // AddAccounts insert accounts into the DB
 func (hdb *HistoryDB) AddAccounts(accounts []common.Account) error {
-	return hdb.addAccounts(hdb.db, accounts)
+	return tracerr.Wrap(hdb.addAccounts(hdb.db, accounts))
 }
 func (hdb *HistoryDB) addAccounts(d meddler.DB, accounts []common.Account) error {
-	return db.BulkInsert(
+	if len(accounts) == 0 {
+		return nil
+	}
+	return tracerr.Wrap(db.BulkInsert(
 		d,
 		`INSERT INTO account (
 			idx,
@@ -754,7 +773,7 @@ func (hdb *HistoryDB) addAccounts(d meddler.DB, accounts []common.Account) error
 			eth_addr
 		) VALUES %s;`,
 		accounts[:],
-	)
+	))
 }
 
 // GetAllAccounts returns a list of accounts from the DB
@@ -771,7 +790,9 @@ func (hdb *HistoryDB) GetAllAccounts() ([]common.Account, error) {
 // If the tx is originated by a coordinator, BatchNum must be provided. If it's originated by a user,
 // BatchNum should be null, and the value will be setted by a trigger when a batch forges the tx.
 // EffectiveAmount and EffectiveDepositAmount are seted with default values by the DB.
-func (hdb *HistoryDB) AddL1Txs(l1txs []common.L1Tx) error { return hdb.addL1Txs(hdb.db, l1txs) }
+func (hdb *HistoryDB) AddL1Txs(l1txs []common.L1Tx) error {
+	return tracerr.Wrap(hdb.addL1Txs(hdb.db, l1txs))
+}
 
 // addL1Txs inserts L1 txs to the DB. USD and DepositAmountUSD will be set automatically before storing the tx.
 // If the tx is originated by a coordinator, BatchNum must be provided. If it's originated by a user,
@@ -806,11 +827,13 @@ func (hdb *HistoryDB) addL1Txs(d meddler.DB, l1txs []common.L1Tx) error {
 			DepositAmountFloat: &depositAmountFloat,
 		})
 	}
-	return hdb.addTxs(d, txs)
+	return tracerr.Wrap(hdb.addTxs(d, txs))
 }
 
 // AddL2Txs inserts L2 txs to the DB. TokenID, USD and FeeUSD will be set automatically before storing the tx.
-func (hdb *HistoryDB) AddL2Txs(l2txs []common.L2Tx) error { return hdb.addL2Txs(hdb.db, l2txs) }
+func (hdb *HistoryDB) AddL2Txs(l2txs []common.L2Tx) error {
+	return tracerr.Wrap(hdb.addL2Txs(hdb.db, l2txs))
+}
 
 // addL2Txs inserts L2 txs to the DB. TokenID, USD and FeeUSD will be set automatically before storing the tx.
 func (hdb *HistoryDB) addL2Txs(d meddler.DB, l2txs []common.L2Tx) error {
@@ -835,11 +858,14 @@ func (hdb *HistoryDB) addL2Txs(d meddler.DB, l2txs []common.L2Tx) error {
 			Nonce: &l2txs[i].Nonce,
 		})
 	}
-	return hdb.addTxs(d, txs)
+	return tracerr.Wrap(hdb.addTxs(d, txs))
 }
 
 func (hdb *HistoryDB) addTxs(d meddler.DB, txs []txWrite) error {
-	return db.BulkInsert(
+	if len(txs) == 0 {
+		return nil
+	}
+	return tracerr.Wrap(db.BulkInsert(
 		d,
 		`INSERT INTO tx (
 			is_l1,
@@ -863,7 +889,7 @@ func (hdb *HistoryDB) addTxs(d meddler.DB, txs []txWrite) error {
 			nonce
 		) VALUES %s;`,
 		txs[:],
-	)
+	))
 }
 
 // // GetTxs returns a list of txs from the DB
@@ -1232,7 +1258,7 @@ func (hdb *HistoryDB) GetUnforgedL1UserTxs(toForgeL1TxsNum int64) ([]common.L1Tx
 func (hdb *HistoryDB) GetLastTxsPosition(toForgeL1TxsNum int64) (int, error) {
 	row := hdb.db.QueryRow("SELECT MAX(position) FROM tx WHERE to_forge_l1_txs_num = $1;", toForgeL1TxsNum)
 	var lastL1TxsPosition int
-	return lastL1TxsPosition, row.Scan(&lastL1TxsPosition)
+	return lastL1TxsPosition, tracerr.Wrap(row.Scan(&lastL1TxsPosition))
 }
 
 // GetSCVars returns the rollup, auction and wdelayer smart contracts variables at their last update.
@@ -1257,15 +1283,95 @@ func (hdb *HistoryDB) GetSCVars() (*common.RollupVariables, *common.AuctionVaria
 }
 
 func (hdb *HistoryDB) setRollupVars(d meddler.DB, rollup *common.RollupVariables) error {
-	return meddler.Insert(d, "rollup_vars", rollup)
+	return tracerr.Wrap(meddler.Insert(d, "rollup_vars", rollup))
 }
 
 func (hdb *HistoryDB) setAuctionVars(d meddler.DB, auction *common.AuctionVariables) error {
-	return meddler.Insert(d, "auction_vars", auction)
+	return tracerr.Wrap(meddler.Insert(d, "auction_vars", auction))
 }
 
 func (hdb *HistoryDB) setWDelayerVars(d meddler.DB, wDelayer *common.WDelayerVariables) error {
-	return meddler.Insert(d, "wdelayer_vars", wDelayer)
+	return tracerr.Wrap(meddler.Insert(d, "wdelayer_vars", wDelayer))
+}
+
+func (hdb *HistoryDB) addBucketUpdates(d meddler.DB, bucketUpdates []common.BucketUpdate) error {
+	if len(bucketUpdates) == 0 {
+		return nil
+	}
+	return tracerr.Wrap(db.BulkInsert(
+		d,
+		`INSERT INTO bucket_update (
+		 	eth_block_num,
+		 	num_bucket,
+		 	block_stamp,
+		 	withdrawals
+		) VALUES %s;`,
+		bucketUpdates[:],
+	))
+}
+
+// GetAllBucketUpdates retrieves all the bucket updates
+func (hdb *HistoryDB) GetAllBucketUpdates() ([]common.BucketUpdate, error) {
+	var bucketUpdates []*common.BucketUpdate
+	err := meddler.QueryAll(
+		hdb.db, &bucketUpdates,
+		"SELECT * FROM bucket_update;",
+	)
+	return db.SlicePtrsToSlice(bucketUpdates).([]common.BucketUpdate), tracerr.Wrap(err)
+}
+
+func (hdb *HistoryDB) addTokenExchanges(d meddler.DB, tokenExchanges []common.TokenExchange) error {
+	if len(tokenExchanges) == 0 {
+		return nil
+	}
+	return tracerr.Wrap(db.BulkInsert(
+		d,
+		`INSERT INTO token_exchange (
+			eth_block_num,
+    			eth_addr,
+    			value_usd
+		) VALUES %s;`,
+		tokenExchanges[:],
+	))
+}
+
+// GetAllTokenExchanges retrieves all the token exchanges
+func (hdb *HistoryDB) GetAllTokenExchanges() ([]common.TokenExchange, error) {
+	var tokenExchanges []*common.TokenExchange
+	err := meddler.QueryAll(
+		hdb.db, &tokenExchanges,
+		"SELECT * FROM token_exchange;",
+	)
+	return db.SlicePtrsToSlice(tokenExchanges).([]common.TokenExchange), tracerr.Wrap(err)
+}
+
+func (hdb *HistoryDB) addEscapeHatchWithdrawals(d meddler.DB,
+	escapeHatchWithdrawals []common.WDelayerEscapeHatchWithdrawal) error {
+	if len(escapeHatchWithdrawals) == 0 {
+		return nil
+	}
+	return tracerr.Wrap(db.BulkInsert(
+		d,
+		`INSERT INTO escape_hatch_withdrawal (
+			eth_block_num,
+			who_addr,
+			to_addr,
+			token_addr,
+			amount
+		) VALUES %s;`,
+		escapeHatchWithdrawals[:],
+	))
+}
+
+// GetAllEscapeHatchWithdrawals retrieves all the escape hatch withdrawals
+func (hdb *HistoryDB) GetAllEscapeHatchWithdrawals() ([]common.WDelayerEscapeHatchWithdrawal, error) {
+	var escapeHatchWithdrawals []*common.WDelayerEscapeHatchWithdrawal
+	err := meddler.QueryAll(
+		hdb.db, &escapeHatchWithdrawals,
+		"SELECT * FROM escape_hatch_withdrawal;",
+	)
+	return db.SlicePtrsToSlice(escapeHatchWithdrawals).([]common.WDelayerEscapeHatchWithdrawal),
+		tracerr.Wrap(err)
 }
 
 // SetInitialSCVars sets the initial state of rollup, auction, wdelayer smart
@@ -1305,6 +1411,9 @@ func (hdb *HistoryDB) SetInitialSCVars(rollup *common.RollupVariables,
 // setL1UserTxEffectiveAmounts sets the EffectiveAmount and EffectiveDepositAmount
 // of the given l1UserTxs (with an UPDATE)
 func (hdb *HistoryDB) setL1UserTxEffectiveAmounts(d sqlx.Ext, txs []common.L1Tx) error {
+	if len(txs) == 0 {
+		return nil
+	}
 	// Effective amounts are stored as success flags in the DB, with true value by default
 	// to reduce the amount of updates. Therefore, only amounts that became uneffective should be
 	// updated to become false
@@ -1336,10 +1445,10 @@ func (hdb *HistoryDB) setL1UserTxEffectiveAmounts(d sqlx.Ext, txs []common.L1Tx)
 			(NULL::::BYTEA, NULL::::BOOL, NULL::::BOOL),
 			(:id, :amount_success, :deposit_amount_success)
 		) as tx_update (id, amount_success, deposit_amount_success)
-		WHERE tx.id = tx_update.id
+		WHERE tx.id = tx_update.id;
 	`
 	if len(txUpdates) > 0 {
-		if _, err := sqlx.NamedQuery(d, query, txUpdates); err != nil {
+		if _, err := sqlx.NamedExec(d, query, txUpdates); err != nil {
 			return tracerr.Wrap(err)
 		}
 	}
@@ -1367,24 +1476,18 @@ func (hdb *HistoryDB) AddBlockSCData(blockData *common.BlockData) (err error) {
 	}
 
 	// Add Coordinators
-	if len(blockData.Auction.Coordinators) > 0 {
-		if err := hdb.addCoordinators(txn, blockData.Auction.Coordinators); err != nil {
-			return tracerr.Wrap(err)
-		}
+	if err := hdb.addCoordinators(txn, blockData.Auction.Coordinators); err != nil {
+		return tracerr.Wrap(err)
 	}
 
 	// Add Bids
-	if len(blockData.Auction.Bids) > 0 {
-		if err := hdb.addBids(txn, blockData.Auction.Bids); err != nil {
-			return tracerr.Wrap(err)
-		}
+	if err := hdb.addBids(txn, blockData.Auction.Bids); err != nil {
+		return tracerr.Wrap(err)
 	}
 
 	// Add Tokens
-	if len(blockData.Rollup.AddedTokens) > 0 {
-		if err := hdb.addTokens(txn, blockData.Rollup.AddedTokens); err != nil {
-			return tracerr.Wrap(err)
-		}
+	if err := hdb.addTokens(txn, blockData.Rollup.AddedTokens); err != nil {
+		return tracerr.Wrap(err)
 	}
 
 	// Prepare user L1 txs to be added.
@@ -1420,10 +1523,8 @@ func (hdb *HistoryDB) AddBlockSCData(blockData *common.BlockData) (err error) {
 
 		// Set the EffectiveAmount and EffectiveDepositAmount of all the
 		// L1UserTxs that have been forged in this batch
-		if len(batch.L1UserTxs) > 0 {
-			if err = hdb.setL1UserTxEffectiveAmounts(txn, batch.L1UserTxs); err != nil {
-				return tracerr.Wrap(err)
-			}
+		if err = hdb.setL1UserTxEffectiveAmounts(txn, batch.L1UserTxs); err != nil {
+			return tracerr.Wrap(err)
 		}
 
 		// Add Batch: this will trigger an update on the DB
@@ -1433,24 +1534,18 @@ func (hdb *HistoryDB) AddBlockSCData(blockData *common.BlockData) (err error) {
 		}
 
 		// Add accounts
-		if len(batch.CreatedAccounts) > 0 {
-			if err := hdb.addAccounts(txn, batch.CreatedAccounts); err != nil {
-				return tracerr.Wrap(err)
-			}
+		if err := hdb.addAccounts(txn, batch.CreatedAccounts); err != nil {
+			return tracerr.Wrap(err)
 		}
 
 		// Add forged l1 coordinator Txs
-		if len(batch.L1CoordinatorTxs) > 0 {
-			if err := hdb.addL1Txs(txn, batch.L1CoordinatorTxs); err != nil {
-				return tracerr.Wrap(err)
-			}
+		if err := hdb.addL1Txs(txn, batch.L1CoordinatorTxs); err != nil {
+			return tracerr.Wrap(err)
 		}
 
 		// Add l2 Txs
-		if len(batch.L2Txs) > 0 {
-			if err := hdb.addL2Txs(txn, batch.L2Txs); err != nil {
-				return tracerr.Wrap(err)
-			}
+		if err := hdb.addL2Txs(txn, batch.L2Txs); err != nil {
+			return tracerr.Wrap(err)
 		}
 
 		// Add user L1 txs that will be forged in next batch
@@ -1461,10 +1556,8 @@ func (hdb *HistoryDB) AddBlockSCData(blockData *common.BlockData) (err error) {
 		}
 
 		// Add exit tree
-		if len(batch.ExitTree) > 0 {
-			if err := hdb.addExitTree(txn, batch.ExitTree); err != nil {
-				return tracerr.Wrap(err)
-			}
+		if err := hdb.addExitTree(txn, batch.ExitTree); err != nil {
+			return tracerr.Wrap(err)
 		}
 	}
 	// Add user L1 txs that won't be forged in this block
@@ -1473,6 +1566,8 @@ func (hdb *HistoryDB) AddBlockSCData(blockData *common.BlockData) (err error) {
 			return tracerr.Wrap(err)
 		}
 	}
+
+	// Set SC Vars if there was an update
 	if blockData.Rollup.Vars != nil {
 		if err := hdb.setRollupVars(txn, blockData.Rollup.Vars); err != nil {
 			return tracerr.Wrap(err)
@@ -1489,11 +1584,28 @@ func (hdb *HistoryDB) AddBlockSCData(blockData *common.BlockData) (err error) {
 		}
 	}
 
+	// Update withdrawals in exit tree table
 	if err := hdb.updateExitTree(txn, blockData.Block.Num,
 		blockData.Rollup.Withdrawals, blockData.WDelayer.Withdrawals); err != nil {
 		return tracerr.Wrap(err)
 	}
 
+	// Add Escape Hatch Withdrawals
+	if err := hdb.addEscapeHatchWithdrawals(txn,
+		blockData.WDelayer.EscapeHatchWithdrawals); err != nil {
+		return tracerr.Wrap(err)
+	}
+
+	// Add Buckets withdrawals updates
+	if err := hdb.addBucketUpdates(txn, blockData.Rollup.UpdateBucketWithdraw); err != nil {
+		return tracerr.Wrap(err)
+	}
+
+	// Add Token exchange updates
+	if err := hdb.addTokenExchanges(txn, blockData.Rollup.TokenExchanges); err != nil {
+		return tracerr.Wrap(err)
+	}
+
 	return tracerr.Wrap(txn.Commit())
 }
 
@@ -1544,7 +1656,7 @@ func (hdb *HistoryDB) GetCoordinatorsAPI(fromItem, limit *uint, order string) ([
 
 // AddAuctionVars insert auction vars into the DB
 func (hdb *HistoryDB) AddAuctionVars(auctionVars *common.AuctionVariables) error {
-	return meddler.Insert(hdb.db, "auction_vars", auctionVars)
+	return tracerr.Wrap(meddler.Insert(hdb.db, "auction_vars", auctionVars))
 }
 
 // GetAuctionVars returns auction variables

db/historydb/historydb_test.go

@@ -647,7 +647,8 @@ func exampleInitSCVars() (*common.RollupVariables, *common.AuctionVariables, *co
 		big.NewInt(10),
 		12,
 		13,
-		[5]common.Bucket{},
+		[5]common.BucketParams{},
+		false,
 	}
 	//nolint:govet
 	auction := &common.AuctionVariables{
@@ -937,6 +938,87 @@ func TestGetBestBidCoordinator(t *testing.T) {
 	require.Equal(t, sql.ErrNoRows, tracerr.Unwrap(err))
 }
 
+func TestAddBucketUpdates(t *testing.T) {
+	test.WipeDB(historyDB.DB())
+	const fromBlock int64 = 1
+	const toBlock int64 = 5 + 1
+	setTestBlocks(fromBlock, toBlock)
+
+	bucketUpdates := []common.BucketUpdate{
+		{
+			EthBlockNum: 4,
+			NumBucket:   0,
+			BlockStamp:  4,
+			Withdrawals: big.NewInt(123),
+		},
+		{
+			EthBlockNum: 5,
+			NumBucket:   2,
+			BlockStamp:  5,
+			Withdrawals: big.NewInt(42),
+		},
+	}
+	err := historyDB.addBucketUpdates(historyDB.db, bucketUpdates)
+	require.NoError(t, err)
+	dbBucketUpdates, err := historyDB.GetAllBucketUpdates()
+	require.NoError(t, err)
+	assert.Equal(t, bucketUpdates, dbBucketUpdates)
+}
+
+func TestAddTokenExchanges(t *testing.T) {
+	test.WipeDB(historyDB.DB())
+	const fromBlock int64 = 1
+	const toBlock int64 = 5 + 1
+	setTestBlocks(fromBlock, toBlock)
+
+	tokenExchanges := []common.TokenExchange{
+		{
+			EthBlockNum: 4,
+			Address:     ethCommon.BigToAddress(big.NewInt(111)),
+			ValueUSD:    12345,
+		},
+		{
+			EthBlockNum: 5,
+			Address:     ethCommon.BigToAddress(big.NewInt(222)),
+			ValueUSD:    67890,
+		},
+	}
+	err := historyDB.addTokenExchanges(historyDB.db, tokenExchanges)
+	require.NoError(t, err)
+	dbTokenExchanges, err := historyDB.GetAllTokenExchanges()
+	require.NoError(t, err)
+	assert.Equal(t, tokenExchanges, dbTokenExchanges)
+}
+
+func TestAddEscapeHatchWithdrawals(t *testing.T) {
+	test.WipeDB(historyDB.DB())
+	const fromBlock int64 = 1
+	const toBlock int64 = 5 + 1
+	setTestBlocks(fromBlock, toBlock)
+
+	escapeHatchWithdrawals := []common.WDelayerEscapeHatchWithdrawal{
+		{
+			EthBlockNum: 4,
+			Who:         ethCommon.BigToAddress(big.NewInt(111)),
+			To:          ethCommon.BigToAddress(big.NewInt(222)),
+			TokenAddr:   ethCommon.BigToAddress(big.NewInt(333)),
+			Amount:      big.NewInt(10002),
+		},
+		{
+			EthBlockNum: 5,
+			Who:         ethCommon.BigToAddress(big.NewInt(444)),
+			To:          ethCommon.BigToAddress(big.NewInt(555)),
+			TokenAddr:   ethCommon.BigToAddress(big.NewInt(666)),
+			Amount:      big.NewInt(20003),
+		},
+	}
+	err := historyDB.addEscapeHatchWithdrawals(historyDB.db, escapeHatchWithdrawals)
+	require.NoError(t, err)
+	dbEscapeHatchWithdrawals, err := historyDB.GetAllEscapeHatchWithdrawals()
+	require.NoError(t, err)
+	assert.Equal(t, escapeHatchWithdrawals, dbEscapeHatchWithdrawals)
+}
+
 // setTestBlocks WARNING: this will delete the blocks and recreate them
 func setTestBlocks(from, to int64) []common.Block {
 	test.WipeDB(historyDB.DB())

db/l2db/l2db.go

@@ -59,26 +59,26 @@ func (l2db *L2DB) AddAccountCreationAuth(auth *common.AccountCreationAuth) error
 // GetAccountCreationAuth returns an account creation authorization from the DB
 func (l2db *L2DB) GetAccountCreationAuth(addr ethCommon.Address) (*common.AccountCreationAuth, error) {
 	auth := new(common.AccountCreationAuth)
-	return auth, meddler.QueryRow(
+	return auth, tracerr.Wrap(meddler.QueryRow(
 		l2db.db, auth,
 		"SELECT * FROM account_creation_auth WHERE eth_addr = $1;",
 		addr,
-	)
+	))
 }
 
 // GetAccountCreationAuthAPI returns an account creation authorization from the DB
 func (l2db *L2DB) GetAccountCreationAuthAPI(addr ethCommon.Address) (*AccountCreationAuthAPI, error) {
 	auth := new(AccountCreationAuthAPI)
-	return auth, meddler.QueryRow(
+	return auth, tracerr.Wrap(meddler.QueryRow(
 		l2db.db, auth,
 		"SELECT * FROM account_creation_auth WHERE eth_addr = $1;",
 		addr,
-	)
+	))
 }
 
 // AddTx inserts a tx to the pool
 func (l2db *L2DB) AddTx(tx *PoolL2TxWrite) error {
-	return meddler.Insert(l2db.db, "tx_pool", tx)
+	return tracerr.Wrap(meddler.Insert(l2db.db, "tx_pool", tx))
 }
 
 // AddTxTest inserts a tx into the L2DB. This is useful for test purposes,
@@ -122,7 +122,7 @@ func (l2db *L2DB) AddTxTest(tx *common.PoolL2Tx) error {
 	amountF, _ := f.Float64()
 	insertTx.AmountFloat = amountF
 	// insert tx
-	return meddler.Insert(l2db.db, "tx_pool", insertTx)
+	return tracerr.Wrap(meddler.Insert(l2db.db, "tx_pool", insertTx))
 }
 
 // selectPoolTxAPI select part of queries to get PoolL2TxRead
@@ -147,21 +147,21 @@ FROM tx_pool INNER JOIN token ON tx_pool.token_id = token.token_id `
 // GetTx  return the specified Tx in common.PoolL2Tx format
 func (l2db *L2DB) GetTx(txID common.TxID) (*common.PoolL2Tx, error) {
 	tx := new(common.PoolL2Tx)
-	return tx, meddler.QueryRow(
+	return tx, tracerr.Wrap(meddler.QueryRow(
 		l2db.db, tx,
 		selectPoolTxCommon+"WHERE tx_id = $1;",
 		txID,
-	)
+	))
 }
 
 // GetTxAPI return the specified Tx in PoolTxAPI format
 func (l2db *L2DB) GetTxAPI(txID common.TxID) (*PoolTxAPI, error) {
 	tx := new(PoolTxAPI)
-	return tx, meddler.QueryRow(
+	return tx, tracerr.Wrap(meddler.QueryRow(
 		l2db.db, tx,
 		selectPoolTxAPI+"WHERE tx_id = $1;",
 		txID,
-	)
+	))
 }
 
 // GetPendingTxs return all the pending txs of the L2DB, that have a non NULL AbsoluteFee
@@ -252,6 +252,7 @@ func (l2db *L2DB) GetPendingUniqueFromIdxs() ([]common.Idx, error) {
 	if err != nil {
 		return nil, tracerr.Wrap(err)
 	}
+	defer db.RowsClose(rows)
 	var idx common.Idx
 	for rows.Next() {
 		err = rows.Scan(&idx)
@@ -285,7 +286,7 @@ func (l2db *L2DB) CheckNonces(updatedAccounts []common.IdxNonce, batchNum common
 	// named query which works with slices, and doens't handle an extra
 	// individual argument.
 	query := fmt.Sprintf(checkNoncesQuery, batchNum)
-	if _, err := sqlx.NamedQuery(l2db.db, query, updatedAccounts); err != nil {
+	if _, err := sqlx.NamedExec(l2db.db, query, updatedAccounts); err != nil {
 		return tracerr.Wrap(err)
 	}
 	return nil

db/migrations/0001.sql

@@ -536,7 +536,32 @@ CREATE TABLE rollup_vars (
     fee_add_token BYTEA NOT NULL,
     forge_l1_timeout BIGINT NOT NULL,
     withdrawal_delay BIGINT NOT NULL,
-    buckets BYTEA
+    buckets BYTEA NOT NULL,
+    safe_mode BOOLEAN NOT NULL
+);
+
+CREATE TABLE bucket_update (
+    item_id SERIAL PRIMARY KEY,
+    eth_block_num BIGINT NOT NULL REFERENCES block (eth_block_num) ON DELETE CASCADE,
+    num_bucket BIGINT NOT NULL,
+    block_stamp BIGINT NOT NULL,
+    withdrawals BYTEA NOT NULL
+);
+
+CREATE TABLE token_exchange (
+    item_id SERIAL PRIMARY KEY,
+    eth_block_num BIGINT NOT NULL REFERENCES block (eth_block_num) ON DELETE CASCADE,
+    eth_addr BYTEA NOT NULL,
+    value_usd BIGINT NOT NULL
+);
+
+CREATE TABLE escape_hatch_withdrawal (
+    item_id SERIAL PRIMARY KEY,
+    eth_block_num BIGINT NOT NULL REFERENCES block (eth_block_num) ON DELETE CASCADE,
+    who_addr BYTEA NOT NULL,
+    to_addr BYTEA NOT NULL,
+    token_addr BYTEA NOT NULL,
+    amount BYTEA NOT NULL
 );
 
 CREATE TABLE auction_vars (
@@ -635,6 +660,9 @@ DROP TABLE account_creation_auth;
 DROP TABLE tx_pool;
 DROP TABLE auction_vars;
 DROP TABLE rollup_vars;
+DROP TABLE escape_hatch_withdrawal;
+DROP TABLE bucket_update;
+DROP TABLE token_exchange;
 DROP TABLE wdelayer_vars;
 DROP TABLE tx;
 DROP TABLE exit_tree;

db/utils.go

@@ -1,6 +1,7 @@
 package db
 
 import (
+	"database/sql"
 	"fmt"
 	"math/big"
 	"reflect"
@@ -168,8 +169,14 @@ func SlicePtrsToSlice(slice interface{}) interface{} {
 
 // Rollback an sql transaction, and log the error if it's not nil
 func Rollback(txn *sqlx.Tx) {
-	err := txn.Rollback()
-	if err != nil {
+	if err := txn.Rollback(); err != nil {
 		log.Errorw("Rollback", "err", err)
 	}
 }
+
+// RowsClose close the rows of an sql query, and log the errir if it's not nil
+func RowsClose(rows *sql.Rows) {
+	if err := rows.Close(); err != nil {
+		log.Errorw("rows.Close", "err", err)
+	}
+}

eth/rollup.go

@@ -131,6 +131,7 @@ type rollupEventUpdateBucketsParametersAux struct {
 type RollupEventUpdateBucketsParameters struct {
 	// ArrayBuckets [common.RollupConstNumBuckets][4]*big.Int
 	ArrayBuckets [common.RollupConstNumBuckets]RollupUpdateBucketsParameters
+	SafeMode     bool
 }
 
 // RollupEventUpdateTokenExchange is an event of the Rollup Smart Contract
@@ -798,6 +799,20 @@ func (c *RollupClient) RollupEventsByBlock(blockNum int64) (*RollupEvents, *ethC
 		case logHermezSafeMode:
 			var safeMode RollupEventSafeMode
 			rollupEvents.SafeMode = append(rollupEvents.SafeMode, safeMode)
+			// Also add an UpdateBucketsParameter with
+			// SafeMode=true to keep the order between `safeMode`
+			// and `UpdateBucketsParameters`
+			bucketsParameters := RollupEventUpdateBucketsParameters{
+				SafeMode: true,
+			}
+			for i := range bucketsParameters.ArrayBuckets {
+				bucketsParameters.ArrayBuckets[i].CeilUSD = big.NewInt(0)
+				bucketsParameters.ArrayBuckets[i].Withdrawals = big.NewInt(0)
+				bucketsParameters.ArrayBuckets[i].BlockWithdrawalRate = big.NewInt(0)
+				bucketsParameters.ArrayBuckets[i].MaxWithdrawals = big.NewInt(0)
+			}
+			rollupEvents.UpdateBucketsParameters = append(rollupEvents.UpdateBucketsParameters,
+				bucketsParameters)
 		}
 	}
 	return &rollupEvents, blockHash, nil

synchronizer/synchronizer.go

@@ -313,7 +313,7 @@ func (s *Synchronizer) updateCurrentSlotIfSync(batchesLen int) error {
 	slot.SlotNum = slotNum
 	slot.StartBlock, slot.EndBlock = s.consts.Auction.SlotBlocks(slot.SlotNum)
 	// If Synced, update the current coordinator
-	if s.stats.Synced() {
+	if s.stats.Synced() && blockNum >= s.consts.Auction.GenesisBlockNum {
 		bidCoord, err := s.historyDB.GetBestBidCoordinator(slot.SlotNum)
 		if err != nil && tracerr.Unwrap(err) != sql.ErrNoRows {
 			return tracerr.Wrap(err)
@@ -897,29 +897,74 @@ func (s *Synchronizer) rollupSync(ethBlock *common.Block) (*common.RollupData, e
 		rollupData.AddedTokens = append(rollupData.AddedTokens, token)
 	}
 
+	for _, evt := range rollupEvents.UpdateBucketWithdraw {
+		rollupData.UpdateBucketWithdraw = append(rollupData.UpdateBucketWithdraw,
+			common.BucketUpdate{
+				EthBlockNum: blockNum,
+				NumBucket:   evt.NumBucket,
+				BlockStamp:  evt.BlockStamp,
+				Withdrawals: evt.Withdrawals,
+			})
+	}
+
+	for _, evt := range rollupEvents.Withdraw {
+		rollupData.Withdrawals = append(rollupData.Withdrawals, common.WithdrawInfo{
+			Idx:             common.Idx(evt.Idx),
+			NumExitRoot:     common.BatchNum(evt.NumExitRoot),
+			InstantWithdraw: evt.InstantWithdraw,
+			TxHash:          evt.TxHash,
+		})
+	}
+
+	for _, evt := range rollupEvents.UpdateTokenExchange {
+		if len(evt.AddressArray) != len(evt.ValueArray) {
+			return nil, tracerr.Wrap(fmt.Errorf("in RollupEventUpdateTokenExchange "+
+				"len(AddressArray) != len(ValueArray) (%v != %v)",
+				len(evt.AddressArray), len(evt.ValueArray)))
+		}
+		for i := range evt.AddressArray {
+			rollupData.TokenExchanges = append(rollupData.TokenExchanges,
+				common.TokenExchange{
+					EthBlockNum: blockNum,
+					Address:     evt.AddressArray[i],
+					ValueUSD:    int64(evt.ValueArray[i]),
+				})
+		}
+	}
+
 	varsUpdate := false
 
-	for _, evtUpdateForgeL1L2BatchTimeout := range rollupEvents.UpdateForgeL1L2BatchTimeout {
-		s.vars.Rollup.ForgeL1L2BatchTimeout = evtUpdateForgeL1L2BatchTimeout.NewForgeL1L2BatchTimeout
+	for _, evt := range rollupEvents.UpdateForgeL1L2BatchTimeout {
+		s.vars.Rollup.ForgeL1L2BatchTimeout = evt.NewForgeL1L2BatchTimeout
 		varsUpdate = true
 	}
 
-	for _, evtUpdateFeeAddToken := range rollupEvents.UpdateFeeAddToken {
-		s.vars.Rollup.FeeAddToken = evtUpdateFeeAddToken.NewFeeAddToken
+	for _, evt := range rollupEvents.UpdateFeeAddToken {
+		s.vars.Rollup.FeeAddToken = evt.NewFeeAddToken
 		varsUpdate = true
 	}
 
-	// NOTE: WithdrawDelay update doesn't have event, so we can't track changes
+	for _, evt := range rollupEvents.UpdateWithdrawalDelay {
+		s.vars.Rollup.WithdrawalDelay = evt.NewWithdrawalDelay
+		varsUpdate = true
+	}
 
-	// NOTE: Buckets update dones't have event, so we can't track changes
+	// NOTE: We skip the event rollupEvents.SafeMode because the
+	// implementation RollupEventsByBlock already inserts a non-existing
+	// RollupEventUpdateBucketsParameters into UpdateBucketsParameters with
+	// all the bucket values at 0 and SafeMode = true
 
-	for _, evtWithdraw := range rollupEvents.Withdraw {
-		rollupData.Withdrawals = append(rollupData.Withdrawals, common.WithdrawInfo{
-			Idx:             common.Idx(evtWithdraw.Idx),
-			NumExitRoot:     common.BatchNum(evtWithdraw.NumExitRoot),
-			InstantWithdraw: evtWithdraw.InstantWithdraw,
-			TxHash:          evtWithdraw.TxHash,
-		})
+	for _, evt := range rollupEvents.UpdateBucketsParameters {
+		for i, bucket := range evt.ArrayBuckets {
+			s.vars.Rollup.Buckets[i] = common.BucketParams{
+				CeilUSD:             bucket.CeilUSD,
+				Withdrawals:         bucket.Withdrawals,
+				BlockWithdrawalRate: bucket.BlockWithdrawalRate,
+				MaxWithdrawals:      bucket.MaxWithdrawals,
+			}
+		}
+		s.vars.Rollup.SafeMode = evt.SafeMode
+		varsUpdate = true
 	}
 
 	if varsUpdate {
@@ -958,22 +1003,22 @@ func (s *Synchronizer) auctionSync(ethBlock *common.Block) (*common.AuctionData,
 	}
 
 	// Get bids
-	for _, evtNewBid := range auctionEvents.NewBid {
+	for _, evt := range auctionEvents.NewBid {
 		bid := common.Bid{
-			SlotNum:     evtNewBid.Slot,
-			BidValue:    evtNewBid.BidAmount,
-			Bidder:      evtNewBid.Bidder,
+			SlotNum:     evt.Slot,
+			BidValue:    evt.BidAmount,
+			Bidder:      evt.Bidder,
 			EthBlockNum: blockNum,
 		}
 		auctionData.Bids = append(auctionData.Bids, bid)
 	}
 
 	// Get Coordinators
-	for _, evtSetCoordinator := range auctionEvents.SetCoordinator {
+	for _, evt := range auctionEvents.SetCoordinator {
 		coordinator := common.Coordinator{
-			Bidder:      evtSetCoordinator.BidderAddress,
-			Forger:      evtSetCoordinator.ForgerAddress,
-			URL:         evtSetCoordinator.CoordinatorURL,
+			Bidder:      evt.BidderAddress,
+			Forger:      evt.ForgerAddress,
+			URL:         evt.CoordinatorURL,
 			EthBlockNum: blockNum,
 		}
 		auctionData.Coordinators = append(auctionData.Coordinators, coordinator)
@@ -999,6 +1044,7 @@ func (s *Synchronizer) auctionSync(ethBlock *common.Block) (*common.AuctionData,
 	}
 	for _, evt := range auctionEvents.NewBootCoordinator {
 		s.vars.Auction.BootCoordinator = evt.NewBootCoordinator
+		s.vars.Auction.BootCoordinatorURL = evt.NewBootCoordinatorURL
 		varsUpdate = true
 	}
 	for _, evt := range auctionEvents.NewOpenAuctionSlots {
@@ -1069,10 +1115,19 @@ func (s *Synchronizer) wdelayerSync(ethBlock *common.Block) (*common.WDelayerDat
 			Amount: evt.Amount,
 		})
 	}
+	for _, evt := range wDelayerEvents.EscapeHatchWithdrawal {
+		wDelayerData.EscapeHatchWithdrawals = append(wDelayerData.EscapeHatchWithdrawals,
+			common.WDelayerEscapeHatchWithdrawal{
+				EthBlockNum: blockNum,
+				Who:         evt.Who,
+				To:          evt.To,
+				TokenAddr:   evt.Token,
+				Amount:      evt.Amount,
+			})
+	}
 
 	varsUpdate := false
 
-	// TODO EscapeHatchWithdrawal
 	for range wDelayerEvents.EmergencyModeEnabled {
 		s.vars.WDelayer.EmergencyMode = true
 		varsUpdate = true

test/ethclient.go

@@ -123,8 +123,10 @@ func (a *AuctionBlock) getMinBidBySlot(slot int64) (*big.Int, error) {
 		slotState = eth.NewSlotState()
 		a.State.Slots[slot] = slotState
 	}
-	// If the bidAmount for a slot is 0 it means that it has not yet been bid, so the midBid will be the minimum
-	// bid for the slot time plus the outbidding set, otherwise it will be the bidAmount plus the outbidding
+	// If the bidAmount for a slot is 0 it means that it has not yet been
+	// bid, so the midBid will be the minimum bid for the slot time plus
+	// the outbidding set, otherwise it will be the bidAmount plus the
+	// outbidding
 	if slotState.BidAmount.Cmp(big.NewInt(0)) == 0 {
 		prevBid = a.Vars.DefaultSlotSetBid[slotSet]
 	} else {
@@ -157,7 +159,6 @@ func (a *AuctionBlock) forge(forger ethCommon.Address) error {
 		// Get the relativeBlock to check if the slotDeadline has been exceeded
 		relativeBlock := a.Eth.BlockNum - (a.Constants.GenesisBlockNum +
 			(slotToForge * int64(a.Constants.BlocksPerSlot)))
-
 		if relativeBlock < int64(a.Vars.SlotDeadline) {
 			slotState.ForgerCommitment = true
 		}
@@ -182,8 +183,9 @@ func (a *AuctionBlock) canForge(forger ethCommon.Address, blockNum int64) (bool,
 	// Get the relativeBlock to check if the slotDeadline has been exceeded
 	relativeBlock := blockNum - (a.Constants.GenesisBlockNum + (slotToForge * int64(a.Constants.BlocksPerSlot)))
 
-	// If the closedMinBid is 0 it means that we have to take as minBid the one that is set for this slot set,
-	// otherwise the one that has been saved will be used
+	// If the closedMinBid is 0 it means that we have to take as minBid the
+	// one that is set for this slot set, otherwise the one that has been
+	// saved will be used
 	var minBid *big.Int
 	slotState, ok := a.State.Slots[slotToForge]
 	if !ok {
@@ -197,14 +199,16 @@ func (a *AuctionBlock) canForge(forger ethCommon.Address, blockNum int64) (bool,
 	}
 
 	if !slotState.ForgerCommitment && (relativeBlock >= int64(a.Vars.SlotDeadline)) {
-		// if the relative block has exceeded the slotDeadline and no batch has been forged, anyone can forge
+		// if the relative block has exceeded the slotDeadline and no
+		// batch has been forged, anyone can forge
 		return true, nil
 	} else if coord, ok := a.State.Coordinators[slotState.Bidder]; ok &&
 		coord.Forger == forger && slotState.BidAmount.Cmp(minBid) >= 0 {
 		// if forger bidAmount has exceeded the minBid it can forge
 		return true, nil
 	} else if a.Vars.BootCoordinator == forger && slotState.BidAmount.Cmp(minBid) == -1 {
-		// if it's the boot coordinator and it has not been bid or the bid is below the minimum it can forge
+		// if it's the boot coordinator and it has not been bid or the
+		// bid is below the minimum it can forge
 		return true, nil
 	} else {
 		return false, nil