arnaucube
arnaucube/hermez-nodePublic Self-hosted repository
hermez-node/db/historydb/historydb.go
db/historydb/historydb.goRaw
   1package historydb
   2
   3import (
   4	"errors"
   5	"fmt"
   6	"math"
   7	"math/big"
   8	"strings"
   9
  10	ethCommon "github.com/ethereum/go-ethereum/common"
  11	"github.com/hermeznetwork/hermez-node/common"
  12	"github.com/hermeznetwork/hermez-node/db"
  13	"github.com/hermeznetwork/tracerr"
  14	"github.com/iden3/go-iden3-crypto/babyjub"
  15	"github.com/jmoiron/sqlx"
  16
  17	//nolint:errcheck // driver for postgres DB
  18	_ "github.com/lib/pq"
  19	"github.com/russross/meddler"
  20)
  21
  22const (
  23	// OrderAsc indicates ascending order when using pagination
  24	OrderAsc = "ASC"
  25	// OrderDesc indicates descending order when using pagination
  26	OrderDesc = "DESC"
  27)
  28
  29// TODO(Edu): Document here how HistoryDB is kept consistent
  30
  31// HistoryDB persist the historic of the rollup
  32type HistoryDB struct {
  33	db *sqlx.DB
  34}
  35
  36// NewHistoryDB initialize the DB
  37func NewHistoryDB(db *sqlx.DB) *HistoryDB {
  38	return &HistoryDB{db: db}
  39}
  40
  41// DB returns a pointer to the L2DB.db. This method should be used only for
  42// internal testing purposes.
  43func (hdb *HistoryDB) DB() *sqlx.DB {
  44	return hdb.db
  45}
  46
  47// AddBlock insert a block into the DB
  48func (hdb *HistoryDB) AddBlock(block *common.Block) error { return hdb.addBlock(hdb.db, block) }
  49func (hdb *HistoryDB) addBlock(d meddler.DB, block *common.Block) error {
  50	return tracerr.Wrap(meddler.Insert(d, "block", block))
  51}
  52
  53// AddBlocks inserts blocks into the DB
  54func (hdb *HistoryDB) AddBlocks(blocks []common.Block) error {
  55	return tracerr.Wrap(hdb.addBlocks(hdb.db, blocks))
  56}
  57
  58func (hdb *HistoryDB) addBlocks(d meddler.DB, blocks []common.Block) error {
  59	return tracerr.Wrap(db.BulkInsert(
  60		d,
  61		`INSERT INTO block (
  62			eth_block_num,
  63			timestamp,
  64			hash
  65		) VALUES %s;`,
  66		blocks[:],
  67	))
  68}
  69
  70// GetBlock retrieve a block from the DB, given a block number
  71func (hdb *HistoryDB) GetBlock(blockNum int64) (*common.Block, error) {
  72	block := &common.Block{}
  73	err := meddler.QueryRow(
  74		hdb.db, block,
  75		"SELECT * FROM block WHERE eth_block_num = $1;", blockNum,
  76	)
  77	return block, tracerr.Wrap(err)
  78}
  79
  80// GetAllBlocks retrieve all blocks from the DB
  81func (hdb *HistoryDB) GetAllBlocks() ([]common.Block, error) {
  82	var blocks []*common.Block
  83	err := meddler.QueryAll(
  84		hdb.db, &blocks,
  85		"SELECT * FROM block ORDER BY eth_block_num;",
  86	)
  87	return db.SlicePtrsToSlice(blocks).([]common.Block), tracerr.Wrap(err)
  88}
  89
  90// GetBlocks retrieve blocks from the DB, given a range of block numbers defined by from and to
  91func (hdb *HistoryDB) GetBlocks(from, to int64) ([]common.Block, error) {
  92	var blocks []*common.Block
  93	err := meddler.QueryAll(
  94		hdb.db, &blocks,
  95		"SELECT * FROM block WHERE $1 <= eth_block_num AND eth_block_num < $2 ORDER BY eth_block_num;",
  96		from, to,
  97	)
  98	return db.SlicePtrsToSlice(blocks).([]common.Block), tracerr.Wrap(err)
  99}
 100
 101// GetLastBlock retrieve the block with the highest block number from the DB
 102func (hdb *HistoryDB) GetLastBlock() (*common.Block, error) {
 103	block := &common.Block{}
 104	err := meddler.QueryRow(
 105		hdb.db, block, "SELECT * FROM block ORDER BY eth_block_num DESC LIMIT 1;",
 106	)
 107	return block, tracerr.Wrap(err)
 108}
 109
 110// AddBatch insert a Batch into the DB
 111func (hdb *HistoryDB) AddBatch(batch *common.Batch) error { return hdb.addBatch(hdb.db, batch) }
 112func (hdb *HistoryDB) addBatch(d meddler.DB, batch *common.Batch) error {
 113	// Calculate total collected fees in USD
 114	// Get IDs of collected tokens for fees
 115	tokenIDs := []common.TokenID{}
 116	for id := range batch.CollectedFees {
 117		tokenIDs = append(tokenIDs, id)
 118	}
 119	// Get USD value of the tokens
 120	type tokenPrice struct {
 121		ID       common.TokenID `meddler:"token_id"`
 122		USD      *float64       `meddler:"usd"`
 123		Decimals int            `meddler:"decimals"`
 124	}
 125	var tokenPrices []*tokenPrice
 126	if len(tokenIDs) > 0 {
 127		query, args, err := sqlx.In(
 128			"SELECT token_id, usd, decimals FROM token WHERE token_id IN (?);",
 129			tokenIDs,
 130		)
 131		if err != nil {
 132			return tracerr.Wrap(err)
 133		}
 134		query = hdb.db.Rebind(query)
 135		if err := meddler.QueryAll(
 136			hdb.db, &tokenPrices, query, args...,
 137		); err != nil {
 138			return tracerr.Wrap(err)
 139		}
 140	}
 141	// Calculate total collected
 142	var total float64
 143	for _, tokenPrice := range tokenPrices {
 144		if tokenPrice.USD == nil {
 145			continue
 146		}
 147		f := new(big.Float).SetInt(batch.CollectedFees[tokenPrice.ID])
 148		amount, _ := f.Float64()
 149		total += *tokenPrice.USD * (amount / math.Pow(10, float64(tokenPrice.Decimals))) //nolint decimals have to be ^10
 150	}
 151	batch.TotalFeesUSD = &total
 152	// Insert to DB
 153	return tracerr.Wrap(meddler.Insert(d, "batch", batch))
 154}
 155
 156// AddBatches insert Bids into the DB
 157func (hdb *HistoryDB) AddBatches(batches []common.Batch) error {
 158	return tracerr.Wrap(hdb.addBatches(hdb.db, batches))
 159}
 160func (hdb *HistoryDB) addBatches(d meddler.DB, batches []common.Batch) error {
 161	for i := 0; i < len(batches); i++ {
 162		if err := hdb.addBatch(d, &batches[i]); err != nil {
 163			return tracerr.Wrap(err)
 164		}
 165	}
 166	return nil
 167}
 168
 169// GetBatchAPI return the batch with the given batchNum
 170func (hdb *HistoryDB) GetBatchAPI(batchNum common.BatchNum) (*BatchAPI, error) {
 171	batch := &BatchAPI{}
 172	return batch, tracerr.Wrap(meddler.QueryRow(
 173		hdb.db, batch,
 174		`SELECT batch.item_id, batch.batch_num, batch.eth_block_num,
 175		batch.forger_addr, batch.fees_collected, batch.total_fees_usd, batch.state_root,
 176		batch.num_accounts, batch.exit_root, batch.forge_l1_txs_num, batch.slot_num,
 177		block.timestamp, block.hash,
 178	    COALESCE ((SELECT COUNT(*) FROM tx WHERE batch_num = batch.batch_num), 0) AS forged_txs
 179	    FROM batch INNER JOIN block ON batch.eth_block_num = block.eth_block_num
 180	 	WHERE batch_num = $1;`, batchNum,
 181	))
 182}
 183
 184// GetBatchesAPI return the batches applying the given filters
 185func (hdb *HistoryDB) GetBatchesAPI(
 186	minBatchNum, maxBatchNum, slotNum *uint,
 187	forgerAddr *ethCommon.Address,
 188	fromItem, limit *uint, order string,
 189) ([]BatchAPI, uint64, error) {
 190	var query string
 191	var args []interface{}
 192	queryStr := `SELECT batch.item_id, batch.batch_num, batch.eth_block_num,
 193	batch.forger_addr, batch.fees_collected, batch.total_fees_usd, batch.state_root,
 194	batch.num_accounts, batch.exit_root, batch.forge_l1_txs_num, batch.slot_num,
 195	block.timestamp, block.hash,
 196	COALESCE ((SELECT COUNT(*) FROM tx WHERE batch_num = batch.batch_num), 0) AS forged_txs,
 197	count(*) OVER() AS total_items
 198	FROM batch INNER JOIN block ON batch.eth_block_num = block.eth_block_num `
 199	// Apply filters
 200	nextIsAnd := false
 201	// minBatchNum filter
 202	if minBatchNum != nil {
 203		if nextIsAnd {
 204			queryStr += "AND "
 205		} else {
 206			queryStr += "WHERE "
 207		}
 208		queryStr += "batch.batch_num > ? "
 209		args = append(args, minBatchNum)
 210		nextIsAnd = true
 211	}
 212	// maxBatchNum filter
 213	if maxBatchNum != nil {
 214		if nextIsAnd {
 215			queryStr += "AND "
 216		} else {
 217			queryStr += "WHERE "
 218		}
 219		queryStr += "batch.batch_num < ? "
 220		args = append(args, maxBatchNum)
 221		nextIsAnd = true
 222	}
 223	// slotNum filter
 224	if slotNum != nil {
 225		if nextIsAnd {
 226			queryStr += "AND "
 227		} else {
 228			queryStr += "WHERE "
 229		}
 230		queryStr += "batch.slot_num = ? "
 231		args = append(args, slotNum)
 232		nextIsAnd = true
 233	}
 234	// forgerAddr filter
 235	if forgerAddr != nil {
 236		if nextIsAnd {
 237			queryStr += "AND "
 238		} else {
 239			queryStr += "WHERE "
 240		}
 241		queryStr += "batch.forger_addr = ? "
 242		args = append(args, forgerAddr)
 243		nextIsAnd = true
 244	}
 245	// pagination
 246	if fromItem != nil {
 247		if nextIsAnd {
 248			queryStr += "AND "
 249		} else {
 250			queryStr += "WHERE "
 251		}
 252		if order == OrderAsc {
 253			queryStr += "batch.item_id >= ? "
 254		} else {
 255			queryStr += "batch.item_id <= ? "
 256		}
 257		args = append(args, fromItem)
 258	}
 259	queryStr += "ORDER BY batch.item_id "
 260	if order == OrderAsc {
 261		queryStr += " ASC "
 262	} else {
 263		queryStr += " DESC "
 264	}
 265	queryStr += fmt.Sprintf("LIMIT %d;", *limit)
 266	query = hdb.db.Rebind(queryStr)
 267	// log.Debug(query)
 268	batchPtrs := []*BatchAPI{}
 269	if err := meddler.QueryAll(hdb.db, &batchPtrs, query, args...); err != nil {
 270		return nil, 0, tracerr.Wrap(err)
 271	}
 272	batches := db.SlicePtrsToSlice(batchPtrs).([]BatchAPI)
 273	if len(batches) == 0 {
 274		return batches, 0, nil
 275	}
 276	return batches, batches[0].TotalItems - uint64(len(batches)), nil
 277}
 278
 279// GetAllBatches retrieve all batches from the DB
 280func (hdb *HistoryDB) GetAllBatches() ([]common.Batch, error) {
 281	var batches []*common.Batch
 282	err := meddler.QueryAll(
 283		hdb.db, &batches,
 284		`SELECT batch.batch_num, batch.eth_block_num, batch.forger_addr, batch.fees_collected,
 285		 batch.fee_idxs_coordinator, batch.state_root, batch.num_accounts, batch.last_idx, batch.exit_root,
 286		 batch.forge_l1_txs_num, batch.slot_num, batch.total_fees_usd FROM batch
 287		 ORDER BY item_id;`,
 288	)
 289	return db.SlicePtrsToSlice(batches).([]common.Batch), tracerr.Wrap(err)
 290}
 291
 292// GetBatches retrieve batches from the DB, given a range of batch numbers defined by from and to
 293func (hdb *HistoryDB) GetBatches(from, to common.BatchNum) ([]common.Batch, error) {
 294	var batches []*common.Batch
 295	err := meddler.QueryAll(
 296		hdb.db, &batches,
 297		`SELECT batch_num, eth_block_num, forger_addr, fees_collected, fee_idxs_coordinator, 
 298		state_root, num_accounts, last_idx, exit_root, forge_l1_txs_num, slot_num, total_fees_usd 
 299		FROM batch WHERE $1 <= batch_num AND batch_num < $2 ORDER BY batch_num;`,
 300		from, to,
 301	)
 302	return db.SlicePtrsToSlice(batches).([]common.Batch), tracerr.Wrap(err)
 303}
 304
 305// GetFirstBatchBlockNumBySlot returns the ethereum block number of the first
 306// batch within a slot
 307func (hdb *HistoryDB) GetFirstBatchBlockNumBySlot(slotNum int64) (int64, error) {
 308	row := hdb.db.QueryRow(
 309		`SELECT eth_block_num FROM batch
 310		WHERE slot_num = $1 ORDER BY batch_num ASC LIMIT 1;`, slotNum,
 311	)
 312	var blockNum int64
 313	return blockNum, tracerr.Wrap(row.Scan(&blockNum))
 314}
 315
 316// GetLastBatchNum returns the BatchNum of the latest forged batch
 317func (hdb *HistoryDB) GetLastBatchNum() (common.BatchNum, error) {
 318	row := hdb.db.QueryRow("SELECT batch_num FROM batch ORDER BY batch_num DESC LIMIT 1;")
 319	var batchNum common.BatchNum
 320	return batchNum, tracerr.Wrap(row.Scan(&batchNum))
 321}
 322
 323// GetLastL1BatchBlockNum returns the blockNum of the latest forged l1Batch
 324func (hdb *HistoryDB) GetLastL1BatchBlockNum() (int64, error) {
 325	row := hdb.db.QueryRow(`SELECT eth_block_num FROM batch
 326		WHERE forge_l1_txs_num IS NOT NULL
 327		ORDER BY batch_num DESC LIMIT 1;`)
 328	var blockNum int64
 329	return blockNum, tracerr.Wrap(row.Scan(&blockNum))
 330}
 331
 332// GetLastL1TxsNum returns the greatest ForgeL1TxsNum in the DB from forged
 333// batches.  If there's no batch in the DB (nil, nil) is returned.
 334func (hdb *HistoryDB) GetLastL1TxsNum() (*int64, error) {
 335	row := hdb.db.QueryRow("SELECT MAX(forge_l1_txs_num) FROM batch;")
 336	lastL1TxsNum := new(int64)
 337	return lastL1TxsNum, tracerr.Wrap(row.Scan(&lastL1TxsNum))
 338}
 339
 340// Reorg deletes all the information that was added into the DB after the
 341// lastValidBlock.  If lastValidBlock is negative, all block information is
 342// deleted.
 343func (hdb *HistoryDB) Reorg(lastValidBlock int64) error {
 344	var err error
 345	if lastValidBlock < 0 {
 346		_, err = hdb.db.Exec("DELETE FROM block;")
 347	} else {
 348		_, err = hdb.db.Exec("DELETE FROM block WHERE eth_block_num > $1;", lastValidBlock)
 349	}
 350	return tracerr.Wrap(err)
 351}
 352
 353// AddBids insert Bids into the DB
 354func (hdb *HistoryDB) AddBids(bids []common.Bid) error { return hdb.addBids(hdb.db, bids) }
 355func (hdb *HistoryDB) addBids(d meddler.DB, bids []common.Bid) error {
 356	if len(bids) == 0 {
 357		return nil
 358	}
 359	// TODO: check the coordinator info
 360	return tracerr.Wrap(db.BulkInsert(
 361		d,
 362		"INSERT INTO bid (slot_num, bid_value, eth_block_num, bidder_addr) VALUES %s;",
 363		bids[:],
 364	))
 365}
 366
 367// GetAllBids retrieve all bids from the DB
 368func (hdb *HistoryDB) GetAllBids() ([]common.Bid, error) {
 369	var bids []*common.Bid
 370	err := meddler.QueryAll(
 371		hdb.db, &bids,
 372		`SELECT bid.slot_num, bid.bid_value, bid.eth_block_num, bid.bidder_addr FROM bid
 373		ORDER BY item_id;`,
 374	)
 375	return db.SlicePtrsToSlice(bids).([]common.Bid), tracerr.Wrap(err)
 376}
 377
 378// GetBestBidAPI returns the best bid in specific slot by slotNum
 379func (hdb *HistoryDB) GetBestBidAPI(slotNum *int64) (BidAPI, error) {
 380	bid := &BidAPI{}
 381	err := meddler.QueryRow(
 382		hdb.db, bid, `SELECT bid.*, block.timestamp, coordinator.forger_addr, coordinator.url 
 383		FROM bid INNER JOIN block ON bid.eth_block_num = block.eth_block_num 
 384		INNER JOIN coordinator ON bid.bidder_addr = coordinator.bidder_addr 
 385		WHERE slot_num = $1 ORDER BY item_id DESC LIMIT 1;`, slotNum,
 386	)
 387	return *bid, tracerr.Wrap(err)
 388}
 389
 390// GetBestBidCoordinator returns the forger address of the highest bidder in a slot by slotNum
 391func (hdb *HistoryDB) GetBestBidCoordinator(slotNum int64) (*common.BidCoordinator, error) {
 392	bidCoord := &common.BidCoordinator{}
 393	err := meddler.QueryRow(
 394		hdb.db, bidCoord,
 395		`SELECT (
 396			SELECT default_slot_set_bid
 397			FROM auction_vars
 398			WHERE default_slot_set_bid_slot_num <= $1
 399			ORDER BY eth_block_num DESC LIMIT 1
 400			),
 401		bid.slot_num, bid.bid_value, bid.bidder_addr,
 402		coordinator.forger_addr, coordinator.url
 403		FROM bid
 404		INNER JOIN coordinator ON bid.bidder_addr = coordinator.bidder_addr
 405		WHERE bid.slot_num = $1 ORDER BY bid.item_id DESC LIMIT 1;`,
 406		slotNum)
 407
 408	return bidCoord, tracerr.Wrap(err)
 409}
 410
 411// GetBestBidsAPI returns the best bid in specific slot by slotNum
 412func (hdb *HistoryDB) GetBestBidsAPI(
 413	minSlotNum, maxSlotNum *int64,
 414	bidderAddr *ethCommon.Address,
 415	limit *uint, order string,
 416) ([]BidAPI, uint64, error) {
 417	var query string
 418	var args []interface{}
 419	queryStr := `SELECT b.*, block.timestamp, coordinator.forger_addr, coordinator.url, 
 420	COUNT(*) OVER() AS total_items FROM (
 421	   SELECT slot_num, MAX(item_id) as maxitem 
 422	   FROM bid GROUP BY slot_num
 423	   )
 424	AS x INNER JOIN bid AS b ON b.item_id = x.maxitem
 425	INNER JOIN block ON b.eth_block_num = block.eth_block_num
 426	INNER JOIN coordinator ON b.bidder_addr = coordinator.bidder_addr 
 427	WHERE (b.slot_num >= ? AND b.slot_num <= ?)`
 428	args = append(args, minSlotNum)
 429	args = append(args, maxSlotNum)
 430	// Apply filters
 431	if bidderAddr != nil {
 432		queryStr += " AND b.bidder_addr = ? "
 433		args = append(args, bidderAddr)
 434	}
 435	queryStr += " ORDER BY b.slot_num "
 436	if order == OrderAsc {
 437		queryStr += "ASC "
 438	} else {
 439		queryStr += "DESC "
 440	}
 441	if limit != nil {
 442		queryStr += fmt.Sprintf("LIMIT %d;", *limit)
 443	}
 444	query = hdb.db.Rebind(queryStr)
 445	bidPtrs := []*BidAPI{}
 446	if err := meddler.QueryAll(hdb.db, &bidPtrs, query, args...); err != nil {
 447		return nil, 0, tracerr.Wrap(err)
 448	}
 449	// log.Debug(query)
 450	bids := db.SlicePtrsToSlice(bidPtrs).([]BidAPI)
 451	if len(bids) == 0 {
 452		return bids, 0, nil
 453	}
 454	return bids, bids[0].TotalItems - uint64(len(bids)), nil
 455}
 456
 457// GetBidsAPI return the bids applying the given filters
 458func (hdb *HistoryDB) GetBidsAPI(
 459	slotNum *int64, forgerAddr *ethCommon.Address,
 460	fromItem, limit *uint, order string,
 461) ([]BidAPI, uint64, error) {
 462	var query string
 463	var args []interface{}
 464	queryStr := `SELECT bid.*, block.timestamp, coordinator.forger_addr, coordinator.url, 
 465	COUNT(*) OVER() AS total_items
 466	FROM bid INNER JOIN block ON bid.eth_block_num = block.eth_block_num 
 467	INNER JOIN coordinator ON bid.bidder_addr = coordinator.bidder_addr `
 468	// Apply filters
 469	nextIsAnd := false
 470	// slotNum filter
 471	if slotNum != nil {
 472		if nextIsAnd {
 473			queryStr += "AND "
 474		} else {
 475			queryStr += "WHERE "
 476		}
 477		queryStr += "bid.slot_num = ? "
 478		args = append(args, slotNum)
 479		nextIsAnd = true
 480	}
 481	// slotNum filter
 482	if forgerAddr != nil {
 483		if nextIsAnd {
 484			queryStr += "AND "
 485		} else {
 486			queryStr += "WHERE "
 487		}
 488		queryStr += "bid.bidder_addr = ? "
 489		args = append(args, forgerAddr)
 490		nextIsAnd = true
 491	}
 492	if fromItem != nil {
 493		if nextIsAnd {
 494			queryStr += "AND "
 495		} else {
 496			queryStr += "WHERE "
 497		}
 498		if order == OrderAsc {
 499			queryStr += "bid.item_id >= ? "
 500		} else {
 501			queryStr += "bid.item_id <= ? "
 502		}
 503		args = append(args, fromItem)
 504	}
 505	// pagination
 506	queryStr += "ORDER BY bid.item_id "
 507	if order == OrderAsc {
 508		queryStr += "ASC "
 509	} else {
 510		queryStr += "DESC "
 511	}
 512	queryStr += fmt.Sprintf("LIMIT %d;", *limit)
 513	query, argsQ, err := sqlx.In(queryStr, args...)
 514	if err != nil {
 515		return nil, 0, tracerr.Wrap(err)
 516	}
 517	query = hdb.db.Rebind(query)
 518	bids := []*BidAPI{}
 519	if err := meddler.QueryAll(hdb.db, &bids, query, argsQ...); err != nil {
 520		return nil, 0, tracerr.Wrap(err)
 521	}
 522	if len(bids) == 0 {
 523		return []BidAPI{}, 0, nil
 524	}
 525	return db.SlicePtrsToSlice(bids).([]BidAPI), bids[0].TotalItems - uint64(len(bids)), nil
 526}
 527
 528// AddCoordinators insert Coordinators into the DB
 529func (hdb *HistoryDB) AddCoordinators(coordinators []common.Coordinator) error {
 530	return tracerr.Wrap(hdb.addCoordinators(hdb.db, coordinators))
 531}
 532func (hdb *HistoryDB) addCoordinators(d meddler.DB, coordinators []common.Coordinator) error {
 533	if len(coordinators) == 0 {
 534		return nil
 535	}
 536	return tracerr.Wrap(db.BulkInsert(
 537		d,
 538		"INSERT INTO coordinator (bidder_addr, forger_addr, eth_block_num, url) VALUES %s;",
 539		coordinators[:],
 540	))
 541}
 542
 543// AddExitTree insert Exit tree into the DB
 544func (hdb *HistoryDB) AddExitTree(exitTree []common.ExitInfo) error {
 545	return tracerr.Wrap(hdb.addExitTree(hdb.db, exitTree))
 546}
 547func (hdb *HistoryDB) addExitTree(d meddler.DB, exitTree []common.ExitInfo) error {
 548	if len(exitTree) == 0 {
 549		return nil
 550	}
 551	return tracerr.Wrap(db.BulkInsert(
 552		d,
 553		"INSERT INTO exit_tree (batch_num, account_idx, merkle_proof, balance, "+
 554			"instant_withdrawn, delayed_withdraw_request, delayed_withdrawn) VALUES %s;",
 555		exitTree[:],
 556	))
 557}
 558
 559func (hdb *HistoryDB) updateExitTree(d sqlx.Ext, blockNum int64,
 560	rollupWithdrawals []common.WithdrawInfo, wDelayerWithdrawals []common.WDelayerTransfer) error {
 561	if len(rollupWithdrawals) == 0 && len(wDelayerWithdrawals) == 0 {
 562		return nil
 563	}
 564	type withdrawal struct {
 565		BatchNum               int64              `db:"batch_num"`
 566		AccountIdx             int64              `db:"account_idx"`
 567		InstantWithdrawn       *int64             `db:"instant_withdrawn"`
 568		DelayedWithdrawRequest *int64             `db:"delayed_withdraw_request"`
 569		DelayedWithdrawn       *int64             `db:"delayed_withdrawn"`
 570		Owner                  *ethCommon.Address `db:"owner"`
 571		Token                  *ethCommon.Address `db:"token"`
 572	}
 573	withdrawals := make([]withdrawal, len(rollupWithdrawals)+len(wDelayerWithdrawals))
 574	for i := range rollupWithdrawals {
 575		info := &rollupWithdrawals[i]
 576		withdrawals[i] = withdrawal{
 577			BatchNum:   int64(info.NumExitRoot),
 578			AccountIdx: int64(info.Idx),
 579		}
 580		if info.InstantWithdraw {
 581			withdrawals[i].InstantWithdrawn = &blockNum
 582		} else {
 583			withdrawals[i].DelayedWithdrawRequest = &blockNum
 584			withdrawals[i].Owner = &info.Owner
 585			withdrawals[i].Token = &info.Token
 586		}
 587	}
 588	for i := range wDelayerWithdrawals {
 589		info := &wDelayerWithdrawals[i]
 590		withdrawals[len(rollupWithdrawals)+i] = withdrawal{
 591			DelayedWithdrawn: &blockNum,
 592			Owner:            &info.Owner,
 593			Token:            &info.Token,
 594		}
 595	}
 596	// In VALUES we set an initial row of NULLs to set the types of each
 597	// variable passed as argument
 598	const query string = `
 599		UPDATE exit_tree e SET
 600			instant_withdrawn = d.instant_withdrawn,
 601			delayed_withdraw_request = CASE
 602				WHEN e.delayed_withdraw_request IS NOT NULL THEN e.delayed_withdraw_request
 603				ELSE d.delayed_withdraw_request
 604			END,
 605			delayed_withdrawn = d.delayed_withdrawn,
 606			owner = d.owner,
 607			token = d.token
 608		FROM (VALUES
 609			(NULL::::BIGINT, NULL::::BIGINT, NULL::::BIGINT, NULL::::BIGINT, NULL::::BIGINT, NULL::::BYTEA, NULL::::BYTEA),
 610			(:batch_num,
 611			 :account_idx,
 612			 :instant_withdrawn,
 613			 :delayed_withdraw_request,
 614			 :delayed_withdrawn,
 615			 :owner,
 616			 :token)
 617		) as d (batch_num, account_idx, instant_withdrawn, delayed_withdraw_request, delayed_withdrawn, owner, token)
 618		WHERE
 619			(d.batch_num IS NOT NULL AND e.batch_num = d.batch_num AND e.account_idx = d.account_idx) OR
 620			(d.delayed_withdrawn IS NOT NULL AND e.delayed_withdrawn IS NULL AND e.owner = d.owner AND e.token = d.token);
 621		`
 622	if len(withdrawals) > 0 {
 623		if _, err := sqlx.NamedExec(d, query, withdrawals); err != nil {
 624			return tracerr.Wrap(err)
 625		}
 626	}
 627
 628	return nil
 629}
 630
 631// AddToken insert a token into the DB
 632func (hdb *HistoryDB) AddToken(token *common.Token) error {
 633	return tracerr.Wrap(meddler.Insert(hdb.db, "token", token))
 634}
 635
 636// AddTokens insert tokens into the DB
 637func (hdb *HistoryDB) AddTokens(tokens []common.Token) error { return hdb.addTokens(hdb.db, tokens) }
 638func (hdb *HistoryDB) addTokens(d meddler.DB, tokens []common.Token) error {
 639	if len(tokens) == 0 {
 640		return nil
 641	}
 642	// Sanitize name and symbol
 643	for i, token := range tokens {
 644		token.Name = strings.ToValidUTF8(token.Name, " ")
 645		token.Symbol = strings.ToValidUTF8(token.Symbol, " ")
 646		tokens[i] = token
 647	}
 648	return tracerr.Wrap(db.BulkInsert(
 649		d,
 650		`INSERT INTO token (
 651			token_id,
 652			eth_block_num,
 653			eth_addr,
 654			name,
 655			symbol,
 656			decimals
 657		) VALUES %s;`,
 658		tokens[:],
 659	))
 660}
 661
 662// UpdateTokenValue updates the USD value of a token
 663func (hdb *HistoryDB) UpdateTokenValue(tokenSymbol string, value float64) error {
 664	// Sanitize symbol
 665	tokenSymbol = strings.ToValidUTF8(tokenSymbol, " ")
 666
 667	_, err := hdb.db.Exec(
 668		"UPDATE token SET usd = $1 WHERE symbol = $2;",
 669		value, tokenSymbol,
 670	)
 671	return tracerr.Wrap(err)
 672}
 673
 674// GetToken returns a token from the DB given a TokenID
 675func (hdb *HistoryDB) GetToken(tokenID common.TokenID) (*TokenWithUSD, error) {
 676	token := &TokenWithUSD{}
 677	err := meddler.QueryRow(
 678		hdb.db, token, `SELECT * FROM token WHERE token_id = $1;`, tokenID,
 679	)
 680	return token, tracerr.Wrap(err)
 681}
 682
 683// GetAllTokens returns all tokens from the DB
 684func (hdb *HistoryDB) GetAllTokens() ([]TokenWithUSD, error) {
 685	var tokens []*TokenWithUSD
 686	err := meddler.QueryAll(
 687		hdb.db, &tokens,
 688		"SELECT * FROM token ORDER BY token_id;",
 689	)
 690	return db.SlicePtrsToSlice(tokens).([]TokenWithUSD), tracerr.Wrap(err)
 691}
 692
 693// GetTokens returns a list of tokens from the DB
 694func (hdb *HistoryDB) GetTokens(
 695	ids []common.TokenID, symbols []string, name string, fromItem,
 696	limit *uint, order string,
 697) ([]TokenWithUSD, uint64, error) {
 698	var query string
 699	var args []interface{}
 700	queryStr := `SELECT * , COUNT(*) OVER() AS total_items FROM token `
 701	// Apply filters
 702	nextIsAnd := false
 703	if len(ids) > 0 {
 704		queryStr += "WHERE token_id IN (?) "
 705		nextIsAnd = true
 706		args = append(args, ids)
 707	}
 708	if len(symbols) > 0 {
 709		if nextIsAnd {
 710			queryStr += "AND "
 711		} else {
 712			queryStr += "WHERE "
 713		}
 714		queryStr += "symbol IN (?) "
 715		args = append(args, symbols)
 716		nextIsAnd = true
 717	}
 718	if name != "" {
 719		if nextIsAnd {
 720			queryStr += "AND "
 721		} else {
 722			queryStr += "WHERE "
 723		}
 724		queryStr += "name ~ ? "
 725		args = append(args, name)
 726		nextIsAnd = true
 727	}
 728	if fromItem != nil {
 729		if nextIsAnd {
 730			queryStr += "AND "
 731		} else {
 732			queryStr += "WHERE "
 733		}
 734		if order == OrderAsc {
 735			queryStr += "item_id >= ? "
 736		} else {
 737			queryStr += "item_id <= ? "
 738		}
 739		args = append(args, fromItem)
 740	}
 741	// pagination
 742	queryStr += "ORDER BY item_id "
 743	if order == OrderAsc {
 744		queryStr += "ASC "
 745	} else {
 746		queryStr += "DESC "
 747	}
 748	queryStr += fmt.Sprintf("LIMIT %d;", *limit)
 749	query, argsQ, err := sqlx.In(queryStr, args...)
 750	if err != nil {
 751		return nil, 0, tracerr.Wrap(err)
 752	}
 753	query = hdb.db.Rebind(query)
 754	tokens := []*TokenWithUSD{}
 755	if err := meddler.QueryAll(hdb.db, &tokens, query, argsQ...); err != nil {
 756		return nil, 0, tracerr.Wrap(err)
 757	}
 758	if len(tokens) == 0 {
 759		return []TokenWithUSD{}, 0, nil
 760	}
 761	return db.SlicePtrsToSlice(tokens).([]TokenWithUSD), uint64(len(tokens)) - tokens[0].TotalItems, nil
 762}
 763
 764// GetTokenSymbols returns all the token symbols from the DB
 765func (hdb *HistoryDB) GetTokenSymbols() ([]string, error) {
 766	var tokenSymbols []string
 767	rows, err := hdb.db.Query("SELECT symbol FROM token;")
 768	if err != nil {
 769		return nil, tracerr.Wrap(err)
 770	}
 771	defer db.RowsClose(rows)
 772	sym := new(string)
 773	for rows.Next() {
 774		err = rows.Scan(sym)
 775		if err != nil {
 776			return nil, tracerr.Wrap(err)
 777		}
 778		tokenSymbols = append(tokenSymbols, *sym)
 779	}
 780	return tokenSymbols, nil
 781}
 782
 783// AddAccounts insert accounts into the DB
 784func (hdb *HistoryDB) AddAccounts(accounts []common.Account) error {
 785	return tracerr.Wrap(hdb.addAccounts(hdb.db, accounts))
 786}
 787func (hdb *HistoryDB) addAccounts(d meddler.DB, accounts []common.Account) error {
 788	if len(accounts) == 0 {
 789		return nil
 790	}
 791	return tracerr.Wrap(db.BulkInsert(
 792		d,
 793		`INSERT INTO account (
 794			idx,
 795			token_id,
 796			batch_num,
 797			bjj,
 798			eth_addr
 799		) VALUES %s;`,
 800		accounts[:],
 801	))
 802}
 803
 804// GetAllAccounts returns a list of accounts from the DB
 805func (hdb *HistoryDB) GetAllAccounts() ([]common.Account, error) {
 806	var accs []*common.Account
 807	err := meddler.QueryAll(
 808		hdb.db, &accs,
 809		"SELECT idx, token_id, batch_num, bjj, eth_addr FROM account ORDER BY idx;",
 810	)
 811	return db.SlicePtrsToSlice(accs).([]common.Account), tracerr.Wrap(err)
 812}
 813
 814// AddL1Txs inserts L1 txs to the DB. USD and DepositAmountUSD will be set automatically before storing the tx.
 815// If the tx is originated by a coordinator, BatchNum must be provided. If it's originated by a user,
 816// BatchNum should be null, and the value will be setted by a trigger when a batch forges the tx.
 817// EffectiveAmount and EffectiveDepositAmount are seted with default values by the DB.
 818func (hdb *HistoryDB) AddL1Txs(l1txs []common.L1Tx) error {
 819	return tracerr.Wrap(hdb.addL1Txs(hdb.db, l1txs))
 820}
 821
 822// addL1Txs inserts L1 txs to the DB. USD and DepositAmountUSD will be set automatically before storing the tx.
 823// If the tx is originated by a coordinator, BatchNum must be provided. If it's originated by a user,
 824// BatchNum should be null, and the value will be setted by a trigger when a batch forges the tx.
 825// EffectiveAmount and EffectiveDepositAmount are seted with default values by the DB.
 826func (hdb *HistoryDB) addL1Txs(d meddler.DB, l1txs []common.L1Tx) error {
 827	if len(l1txs) == 0 {
 828		return nil
 829	}
 830	txs := []txWrite{}
 831	for i := 0; i < len(l1txs); i++ {
 832		af := new(big.Float).SetInt(l1txs[i].Amount)
 833		amountFloat, _ := af.Float64()
 834		laf := new(big.Float).SetInt(l1txs[i].DepositAmount)
 835		depositAmountFloat, _ := laf.Float64()
 836		txs = append(txs, txWrite{
 837			// Generic
 838			IsL1:        true,
 839			TxID:        l1txs[i].TxID,
 840			Type:        l1txs[i].Type,
 841			Position:    l1txs[i].Position,
 842			FromIdx:     &l1txs[i].FromIdx,
 843			ToIdx:       l1txs[i].ToIdx,
 844			Amount:      l1txs[i].Amount,
 845			AmountFloat: amountFloat,
 846			TokenID:     l1txs[i].TokenID,
 847			BatchNum:    l1txs[i].BatchNum,
 848			EthBlockNum: l1txs[i].EthBlockNum,
 849			// L1
 850			ToForgeL1TxsNum:    l1txs[i].ToForgeL1TxsNum,
 851			UserOrigin:         &l1txs[i].UserOrigin,
 852			FromEthAddr:        &l1txs[i].FromEthAddr,
 853			FromBJJ:            &l1txs[i].FromBJJ,
 854			DepositAmount:      l1txs[i].DepositAmount,
 855			DepositAmountFloat: &depositAmountFloat,
 856		})
 857	}
 858	return tracerr.Wrap(hdb.addTxs(d, txs))
 859}
 860
 861// AddL2Txs inserts L2 txs to the DB. TokenID, USD and FeeUSD will be set automatically before storing the tx.
 862func (hdb *HistoryDB) AddL2Txs(l2txs []common.L2Tx) error {
 863	return tracerr.Wrap(hdb.addL2Txs(hdb.db, l2txs))
 864}
 865
 866// addL2Txs inserts L2 txs to the DB. TokenID, USD and FeeUSD will be set automatically before storing the tx.
 867func (hdb *HistoryDB) addL2Txs(d meddler.DB, l2txs []common.L2Tx) error {
 868	txs := []txWrite{}
 869	for i := 0; i < len(l2txs); i++ {
 870		f := new(big.Float).SetInt(l2txs[i].Amount)
 871		amountFloat, _ := f.Float64()
 872		txs = append(txs, txWrite{
 873			// Generic
 874			IsL1:        false,
 875			TxID:        l2txs[i].TxID,
 876			Type:        l2txs[i].Type,
 877			Position:    l2txs[i].Position,
 878			FromIdx:     &l2txs[i].FromIdx,
 879			ToIdx:       l2txs[i].ToIdx,
 880			Amount:      l2txs[i].Amount,
 881			AmountFloat: amountFloat,
 882			BatchNum:    &l2txs[i].BatchNum,
 883			EthBlockNum: l2txs[i].EthBlockNum,
 884			// L2
 885			Fee:   &l2txs[i].Fee,
 886			Nonce: &l2txs[i].Nonce,
 887		})
 888	}
 889	return tracerr.Wrap(hdb.addTxs(d, txs))
 890}
 891
 892func (hdb *HistoryDB) addTxs(d meddler.DB, txs []txWrite) error {
 893	if len(txs) == 0 {
 894		return nil
 895	}
 896	return tracerr.Wrap(db.BulkInsert(
 897		d,
 898		`INSERT INTO tx (
 899			is_l1,
 900			id,
 901			type,
 902			position,
 903			from_idx,
 904			to_idx,
 905			amount,
 906			amount_f,
 907			token_id,
 908			batch_num,
 909			eth_block_num,
 910			to_forge_l1_txs_num,
 911			user_origin,
 912			from_eth_addr,
 913			from_bjj,
 914			deposit_amount,
 915			deposit_amount_f,
 916			fee,
 917			nonce
 918		) VALUES %s;`,
 919		txs[:],
 920	))
 921}
 922
 923// // GetTxs returns a list of txs from the DB
 924// func (hdb *HistoryDB) GetTxs() ([]common.Tx, error) {
 925// 	var txs []*common.Tx
 926// 	err := meddler.QueryAll(
 927// 		hdb.db, &txs,
 928// 		`SELECT * FROM tx
 929// 		ORDER BY (batch_num, position) ASC`,
 930// 	)
 931// 	return db.SlicePtrsToSlice(txs).([]common.Tx), err
 932// }
 933
 934// GetHistoryTx returns a tx from the DB given a TxID
 935func (hdb *HistoryDB) GetHistoryTx(txID common.TxID) (*TxAPI, error) {
 936	// Warning: amount_success and deposit_amount_success have true as default for
 937	// performance reasons. The expected default value is false (when txs are unforged)
 938	// this case is handled at the function func (tx TxAPI) MarshalJSON() ([]byte, error)
 939	tx := &TxAPI{}
 940	err := meddler.QueryRow(
 941		hdb.db, tx, `SELECT tx.item_id, tx.is_l1, tx.id, tx.type, tx.position, 
 942		hez_idx(tx.from_idx, token.symbol) AS from_idx, tx.from_eth_addr, tx.from_bjj,
 943		hez_idx(tx.to_idx, token.symbol) AS to_idx, tx.to_eth_addr, tx.to_bjj,
 944		tx.amount, tx.amount_success, tx.token_id, tx.amount_usd, 
 945		tx.batch_num, tx.eth_block_num, tx.to_forge_l1_txs_num, tx.user_origin, 
 946		tx.deposit_amount, tx.deposit_amount_usd, tx.deposit_amount_success, tx.fee, tx.fee_usd, tx.nonce,
 947		token.token_id, token.item_id AS token_item_id, token.eth_block_num AS token_block,
 948		token.eth_addr, token.name, token.symbol, token.decimals, token.usd,
 949		token.usd_update, block.timestamp
 950		FROM tx INNER JOIN token ON tx.token_id = token.token_id 
 951		INNER JOIN block ON tx.eth_block_num = block.eth_block_num 
 952		WHERE tx.id = $1;`, txID,
 953	)
 954	return tx, tracerr.Wrap(err)
 955}
 956
 957// GetHistoryTxs returns a list of txs from the DB using the HistoryTx struct
 958// and pagination info
 959func (hdb *HistoryDB) GetHistoryTxs(
 960	ethAddr *ethCommon.Address, bjj *babyjub.PublicKeyComp,
 961	tokenID *common.TokenID, idx *common.Idx, batchNum *uint, txType *common.TxType,
 962	fromItem, limit *uint, order string,
 963) ([]TxAPI, uint64, error) {
 964	// Warning: amount_success and deposit_amount_success have true as default for
 965	// performance reasons. The expected default value is false (when txs are unforged)
 966	// this case is handled at the function func (tx TxAPI) MarshalJSON() ([]byte, error)
 967	if ethAddr != nil && bjj != nil {
 968		return nil, 0, tracerr.Wrap(errors.New("ethAddr and bjj are incompatible"))
 969	}
 970	var query string
 971	var args []interface{}
 972	queryStr := `SELECT tx.item_id, tx.is_l1, tx.id, tx.type, tx.position, 
 973	hez_idx(tx.from_idx, token.symbol) AS from_idx, tx.from_eth_addr, tx.from_bjj,
 974	hez_idx(tx.to_idx, token.symbol) AS to_idx, tx.to_eth_addr, tx.to_bjj,
 975	tx.amount, tx.amount_success, tx.token_id, tx.amount_usd, 
 976	tx.batch_num, tx.eth_block_num, tx.to_forge_l1_txs_num, tx.user_origin, 
 977	tx.deposit_amount, tx.deposit_amount_usd, tx.deposit_amount_success, tx.fee, tx.fee_usd, tx.nonce,
 978	token.token_id, token.item_id AS token_item_id, token.eth_block_num AS token_block,
 979	token.eth_addr, token.name, token.symbol, token.decimals, token.usd,
 980	token.usd_update, block.timestamp, count(*) OVER() AS total_items 
 981	FROM tx INNER JOIN token ON tx.token_id = token.token_id 
 982	INNER JOIN block ON tx.eth_block_num = block.eth_block_num `
 983	// Apply filters
 984	nextIsAnd := false
 985	// ethAddr filter
 986	if ethAddr != nil {
 987		queryStr += "WHERE (tx.from_eth_addr = ? OR tx.to_eth_addr = ?) "
 988		nextIsAnd = true
 989		args = append(args, ethAddr, ethAddr)
 990	} else if bjj != nil { // bjj filter
 991		queryStr += "WHERE (tx.from_bjj = ? OR tx.to_bjj = ?) "
 992		nextIsAnd = true
 993		args = append(args, bjj, bjj)
 994	}
 995	// tokenID filter
 996	if tokenID != nil {
 997		if nextIsAnd {
 998			queryStr += "AND "
 999		} else {
1000			queryStr += "WHERE "
1001		}
1002		queryStr += "tx.token_id = ? "
1003		args = append(args, tokenID)
1004		nextIsAnd = true
1005	}
1006	// idx filter
1007	if idx != nil {
1008		if nextIsAnd {
1009			queryStr += "AND "
1010		} else {
1011			queryStr += "WHERE "
1012		}
1013		queryStr += "(tx.from_idx = ? OR tx.to_idx = ?) "
1014		args = append(args, idx, idx)
1015		nextIsAnd = true
1016	}
1017	// batchNum filter
1018	if batchNum != nil {
1019		if nextIsAnd {
1020			queryStr += "AND "
1021		} else {
1022			queryStr += "WHERE "
1023		}
1024		queryStr += "tx.batch_num = ? "
1025		args = append(args, batchNum)
1026		nextIsAnd = true
1027	}
1028	// txType filter
1029	if txType != nil {
1030		if nextIsAnd {
1031			queryStr += "AND "
1032		} else {
1033			queryStr += "WHERE "
1034		}
1035		queryStr += "tx.type = ? "
1036		args = append(args, txType)
1037		nextIsAnd = true
1038	}
1039	if fromItem != nil {
1040		if nextIsAnd {
1041			queryStr += "AND "
1042		} else {
1043			queryStr += "WHERE "
1044		}
1045		if order == OrderAsc {
1046			queryStr += "tx.item_id >= ? "
1047		} else {
1048			queryStr += "tx.item_id <= ? "
1049		}
1050		args = append(args, fromItem)
1051		nextIsAnd = true
1052	}
1053	if nextIsAnd {
1054		queryStr += "AND "
1055	} else {
1056		queryStr += "WHERE "
1057	}
1058	queryStr += "tx.batch_num IS NOT NULL "
1059
1060	// pagination
1061	queryStr += "ORDER BY tx.item_id "
1062	if order == OrderAsc {
1063		queryStr += " ASC "
1064	} else {
1065		queryStr += " DESC "
1066	}
1067	queryStr += fmt.Sprintf("LIMIT %d;", *limit)
1068	query = hdb.db.Rebind(queryStr)
1069	// log.Debug(query)
1070	txsPtrs := []*TxAPI{}
1071	if err := meddler.QueryAll(hdb.db, &txsPtrs, query, args...); err != nil {
1072		return nil, 0, tracerr.Wrap(err)
1073	}
1074	txs := db.SlicePtrsToSlice(txsPtrs).([]TxAPI)
1075	if len(txs) == 0 {
1076		return txs, 0, nil
1077	}
1078	return txs, txs[0].TotalItems - uint64(len(txs)), nil
1079}
1080
1081// GetAllExits returns all exit from the DB
1082func (hdb *HistoryDB) GetAllExits() ([]common.ExitInfo, error) {
1083	var exits []*common.ExitInfo
1084	err := meddler.QueryAll(
1085		hdb.db, &exits,
1086		`SELECT exit_tree.batch_num, exit_tree.account_idx, exit_tree.merkle_proof,
1087		exit_tree.balance, exit_tree.instant_withdrawn, exit_tree.delayed_withdraw_request,
1088		exit_tree.delayed_withdrawn FROM exit_tree ORDER BY item_id;`,
1089	)
1090	return db.SlicePtrsToSlice(exits).([]common.ExitInfo), tracerr.Wrap(err)
1091}
1092
1093// GetExitAPI returns a exit from the DB
1094func (hdb *HistoryDB) GetExitAPI(batchNum *uint, idx *common.Idx) (*ExitAPI, error) {
1095	exit := &ExitAPI{}
1096	err := meddler.QueryRow(
1097		hdb.db, exit, `SELECT exit_tree.item_id, exit_tree.batch_num,
1098		hez_idx(exit_tree.account_idx, token.symbol) AS account_idx,
1099		account.bjj, account.eth_addr,
1100		exit_tree.merkle_proof, exit_tree.balance, exit_tree.instant_withdrawn,
1101		exit_tree.delayed_withdraw_request, exit_tree.delayed_withdrawn,
1102		token.token_id, token.item_id AS token_item_id, 
1103		token.eth_block_num AS token_block, token.eth_addr AS token_eth_addr, token.name, token.symbol, 
1104		token.decimals, token.usd, token.usd_update
1105		FROM exit_tree INNER JOIN account ON exit_tree.account_idx = account.idx 
1106		INNER JOIN token ON account.token_id = token.token_id 
1107		WHERE exit_tree.batch_num = $1 AND exit_tree.account_idx = $2;`, batchNum, idx,
1108	)
1109	return exit, tracerr.Wrap(err)
1110}
1111
1112// GetExitsAPI returns a list of exits from the DB and pagination info
1113func (hdb *HistoryDB) GetExitsAPI(
1114	ethAddr *ethCommon.Address, bjj *babyjub.PublicKeyComp, tokenID *common.TokenID,
1115	idx *common.Idx, batchNum *uint, onlyPendingWithdraws *bool,
1116	fromItem, limit *uint, order string,
1117) ([]ExitAPI, uint64, error) {
1118	if ethAddr != nil && bjj != nil {
1119		return nil, 0, tracerr.Wrap(errors.New("ethAddr and bjj are incompatible"))
1120	}
1121	var query string
1122	var args []interface{}
1123	queryStr := `SELECT exit_tree.item_id, exit_tree.batch_num,
1124	hez_idx(exit_tree.account_idx, token.symbol) AS account_idx,
1125	account.bjj, account.eth_addr,
1126	exit_tree.merkle_proof, exit_tree.balance, exit_tree.instant_withdrawn,
1127	exit_tree.delayed_withdraw_request, exit_tree.delayed_withdrawn,
1128	token.token_id, token.item_id AS token_item_id,
1129	token.eth_block_num AS token_block, token.eth_addr AS token_eth_addr, token.name, token.symbol,
1130	token.decimals, token.usd, token.usd_update, COUNT(*) OVER() AS total_items
1131	FROM exit_tree INNER JOIN account ON exit_tree.account_idx = account.idx 
1132	INNER JOIN token ON account.token_id = token.token_id `
1133	// Apply filters
1134	nextIsAnd := false
1135	// ethAddr filter
1136	if ethAddr != nil {
1137		queryStr += "WHERE account.eth_addr = ? "
1138		nextIsAnd = true
1139		args = append(args, ethAddr)
1140	} else if bjj != nil { // bjj filter
1141		queryStr += "WHERE account.bjj = ? "
1142		nextIsAnd = true
1143		args = append(args, bjj)
1144	}
1145	// tokenID filter
1146	if tokenID != nil {
1147		if nextIsAnd {
1148			queryStr += "AND "
1149		} else {
1150			queryStr += "WHERE "
1151		}
1152		queryStr += "account.token_id = ? "
1153		args = append(args, tokenID)
1154		nextIsAnd = true
1155	}
1156	// idx filter
1157	if idx != nil {
1158		if nextIsAnd {
1159			queryStr += "AND "
1160		} else {
1161			queryStr += "WHERE "
1162		}
1163		queryStr += "exit_tree.account_idx = ? "
1164		args = append(args, idx)
1165		nextIsAnd = true
1166	}
1167	// batchNum filter
1168	if batchNum != nil {
1169		if nextIsAnd {
1170			queryStr += "AND "
1171		} else {
1172			queryStr += "WHERE "
1173		}
1174		queryStr += "exit_tree.batch_num = ? "
1175		args = append(args, batchNum)
1176		nextIsAnd = true
1177	}
1178	// onlyPendingWithdraws
1179	if onlyPendingWithdraws != nil {
1180		if *onlyPendingWithdraws {
1181			if nextIsAnd {
1182				queryStr += "AND "
1183			} else {
1184				queryStr += "WHERE "
1185			}
1186			queryStr += "(exit_tree.instant_withdrawn IS NULL AND exit_tree.delayed_withdrawn IS NULL) "
1187			nextIsAnd = true
1188		}
1189	}
1190	if fromItem != nil {
1191		if nextIsAnd {
1192			queryStr += "AND "
1193		} else {
1194			queryStr += "WHERE "
1195		}
1196		if order == OrderAsc {
1197			queryStr += "exit_tree.item_id >= ? "
1198		} else {
1199			queryStr += "exit_tree.item_id <= ? "
1200		}
1201		args = append(args, fromItem)
1202		// nextIsAnd = true
1203	}
1204	// pagination
1205	queryStr += "ORDER BY exit_tree.item_id "
1206	if order == OrderAsc {
1207		queryStr += " ASC "
1208	} else {
1209		queryStr += " DESC "
1210	}
1211	queryStr += fmt.Sprintf("LIMIT %d;", *limit)
1212	query = hdb.db.Rebind(queryStr)
1213	// log.Debug(query)
1214	exits := []*ExitAPI{}
1215	if err := meddler.QueryAll(hdb.db, &exits, query, args...); err != nil {
1216		return nil, 0, tracerr.Wrap(err)
1217	}
1218	if len(exits) == 0 {
1219		return []ExitAPI{}, 0, nil
1220	}
1221	return db.SlicePtrsToSlice(exits).([]ExitAPI), exits[0].TotalItems - uint64(len(exits)), nil
1222}
1223
1224// GetAllL1UserTxs returns all L1UserTxs from the DB
1225func (hdb *HistoryDB) GetAllL1UserTxs() ([]common.L1Tx, error) {
1226	var txs []*common.L1Tx
1227	err := meddler.QueryAll(
1228		hdb.db, &txs, // Note that '\x' gets parsed as a big.Int with value = 0
1229		`SELECT tx.id, tx.to_forge_l1_txs_num, tx.position, tx.user_origin,
1230		tx.from_idx, tx.from_eth_addr, tx.from_bjj, tx.to_idx, tx.token_id,
1231		tx.amount, (CASE WHEN tx.batch_num IS NULL THEN NULL WHEN tx.amount_success THEN tx.amount ELSE '\x' END) AS effective_amount,
1232		tx.deposit_amount, (CASE WHEN tx.batch_num IS NULL THEN NULL WHEN tx.deposit_amount_success THEN tx.deposit_amount ELSE '\x' END) AS effective_deposit_amount,
1233		tx.eth_block_num, tx.type, tx.batch_num
1234		FROM tx WHERE is_l1 = TRUE AND user_origin = TRUE ORDER BY item_id;`,
1235	)
1236	return db.SlicePtrsToSlice(txs).([]common.L1Tx), tracerr.Wrap(err)
1237}
1238
1239// GetAllL1CoordinatorTxs returns all L1CoordinatorTxs from the DB
1240func (hdb *HistoryDB) GetAllL1CoordinatorTxs() ([]common.L1Tx, error) {
1241	var txs []*common.L1Tx
1242	// Since the query specifies that only coordinator txs are returned, it's safe to assume
1243	// that returned txs will always have effective amounts
1244	err := meddler.QueryAll(
1245		hdb.db, &txs,
1246		`SELECT tx.id, tx.to_forge_l1_txs_num, tx.position, tx.user_origin,
1247		tx.from_idx, tx.from_eth_addr, tx.from_bjj, tx.to_idx, tx.token_id,
1248		tx.amount, tx.amount AS effective_amount,
1249		tx.deposit_amount, tx.deposit_amount AS effective_deposit_amount,
1250		tx.eth_block_num, tx.type, tx.batch_num
1251		FROM tx WHERE is_l1 = TRUE AND user_origin = FALSE ORDER BY item_id;`,
1252	)
1253	return db.SlicePtrsToSlice(txs).([]common.L1Tx), tracerr.Wrap(err)
1254}
1255
1256// GetAllL2Txs returns all L2Txs from the DB
1257func (hdb *HistoryDB) GetAllL2Txs() ([]common.L2Tx, error) {
1258	var txs []*common.L2Tx
1259	err := meddler.QueryAll(
1260		hdb.db, &txs,
1261		`SELECT tx.id, tx.batch_num, tx.position,
1262		tx.from_idx, tx.to_idx, tx.amount, tx.fee, tx.nonce,
1263		tx.type, tx.eth_block_num
1264		FROM tx WHERE is_l1 = FALSE ORDER BY item_id;`,
1265	)
1266	return db.SlicePtrsToSlice(txs).([]common.L2Tx), tracerr.Wrap(err)
1267}
1268
1269// GetUnforgedL1UserTxs gets L1 User Txs to be forged in the L1Batch with toForgeL1TxsNum.
1270func (hdb *HistoryDB) GetUnforgedL1UserTxs(toForgeL1TxsNum int64) ([]common.L1Tx, error) {
1271	var txs []*common.L1Tx
1272	err := meddler.QueryAll(
1273		hdb.db, &txs, // only L1 user txs can have batch_num set to null
1274		`SELECT tx.id, tx.to_forge_l1_txs_num, tx.position, tx.user_origin,
1275		tx.from_idx, tx.from_eth_addr, tx.from_bjj, tx.to_idx, tx.token_id,
1276		tx.amount, NULL AS effective_amount,
1277		tx.deposit_amount, NULL AS effective_deposit_amount,
1278		tx.eth_block_num, tx.type, tx.batch_num
1279		FROM tx WHERE batch_num IS NULL AND to_forge_l1_txs_num = $1
1280		ORDER BY position;`,
1281		toForgeL1TxsNum,
1282	)
1283	return db.SlicePtrsToSlice(txs).([]common.L1Tx), tracerr.Wrap(err)
1284}
1285
1286// TODO: Think about chaning all the queries that return a last value, to queries that return the next valid value.
1287
1288// GetLastTxsPosition for a given to_forge_l1_txs_num
1289func (hdb *HistoryDB) GetLastTxsPosition(toForgeL1TxsNum int64) (int, error) {
1290	row := hdb.db.QueryRow(
1291		"SELECT position FROM tx WHERE to_forge_l1_txs_num = $1 ORDER BY position DESC;",
1292		toForgeL1TxsNum,
1293	)
1294	var lastL1TxsPosition int
1295	return lastL1TxsPosition, tracerr.Wrap(row.Scan(&lastL1TxsPosition))
1296}
1297
1298// GetSCVars returns the rollup, auction and wdelayer smart contracts variables at their last update.
1299func (hdb *HistoryDB) GetSCVars() (*common.RollupVariables, *common.AuctionVariables,
1300	*common.WDelayerVariables, error) {
1301	var rollup common.RollupVariables
1302	var auction common.AuctionVariables
1303	var wDelayer common.WDelayerVariables
1304	if err := meddler.QueryRow(hdb.db, &rollup,
1305		"SELECT * FROM rollup_vars ORDER BY eth_block_num DESC LIMIT 1;"); err != nil {
1306		return nil, nil, nil, tracerr.Wrap(err)
1307	}
1308	if err := meddler.QueryRow(hdb.db, &auction,
1309		"SELECT * FROM auction_vars ORDER BY eth_block_num DESC LIMIT 1;"); err != nil {
1310		return nil, nil, nil, tracerr.Wrap(err)
1311	}
1312	if err := meddler.QueryRow(hdb.db, &wDelayer,
1313		"SELECT * FROM wdelayer_vars ORDER BY eth_block_num DESC LIMIT 1;"); err != nil {
1314		return nil, nil, nil, tracerr.Wrap(err)
1315	}
1316	return &rollup, &auction, &wDelayer, nil
1317}
1318
1319func (hdb *HistoryDB) setRollupVars(d meddler.DB, rollup *common.RollupVariables) error {
1320	return tracerr.Wrap(meddler.Insert(d, "rollup_vars", rollup))
1321}
1322
1323func (hdb *HistoryDB) setAuctionVars(d meddler.DB, auction *common.AuctionVariables) error {
1324	return tracerr.Wrap(meddler.Insert(d, "auction_vars", auction))
1325}
1326
1327func (hdb *HistoryDB) setWDelayerVars(d meddler.DB, wDelayer *common.WDelayerVariables) error {
1328	return tracerr.Wrap(meddler.Insert(d, "wdelayer_vars", wDelayer))
1329}
1330
1331func (hdb *HistoryDB) addBucketUpdates(d meddler.DB, bucketUpdates []common.BucketUpdate) error {
1332	if len(bucketUpdates) == 0 {
1333		return nil
1334	}
1335	return tracerr.Wrap(db.BulkInsert(
1336		d,
1337		`INSERT INTO bucket_update (
1338		 	eth_block_num,
1339		 	num_bucket,
1340		 	block_stamp,
1341		 	withdrawals
1342		) VALUES %s;`,
1343		bucketUpdates[:],
1344	))
1345}
1346
1347// GetAllBucketUpdates retrieves all the bucket updates
1348func (hdb *HistoryDB) GetAllBucketUpdates() ([]common.BucketUpdate, error) {
1349	var bucketUpdates []*common.BucketUpdate
1350	err := meddler.QueryAll(
1351		hdb.db, &bucketUpdates,
1352		`SELECT eth_block_num, num_bucket, block_stamp, withdrawals  
1353		FROM bucket_update ORDER BY item_id;`,
1354	)
1355	return db.SlicePtrsToSlice(bucketUpdates).([]common.BucketUpdate), tracerr.Wrap(err)
1356}
1357
1358func (hdb *HistoryDB) addTokenExchanges(d meddler.DB, tokenExchanges []common.TokenExchange) error {
1359	if len(tokenExchanges) == 0 {
1360		return nil
1361	}
1362	return tracerr.Wrap(db.BulkInsert(
1363		d,
1364		`INSERT INTO token_exchange (
1365			eth_block_num,
1366    			eth_addr,
1367    			value_usd
1368		) VALUES %s;`,
1369		tokenExchanges[:],
1370	))
1371}
1372
1373// GetAllTokenExchanges retrieves all the token exchanges
1374func (hdb *HistoryDB) GetAllTokenExchanges() ([]common.TokenExchange, error) {
1375	var tokenExchanges []*common.TokenExchange
1376	err := meddler.QueryAll(
1377		hdb.db, &tokenExchanges,
1378		"SELECT eth_block_num, eth_addr, value_usd FROM token_exchange ORDER BY item_id;",
1379	)
1380	return db.SlicePtrsToSlice(tokenExchanges).([]common.TokenExchange), tracerr.Wrap(err)
1381}
1382
1383func (hdb *HistoryDB) addEscapeHatchWithdrawals(d meddler.DB,
1384	escapeHatchWithdrawals []common.WDelayerEscapeHatchWithdrawal) error {
1385	if len(escapeHatchWithdrawals) == 0 {
1386		return nil
1387	}
1388	return tracerr.Wrap(db.BulkInsert(
1389		d,
1390		`INSERT INTO escape_hatch_withdrawal (
1391			eth_block_num,
1392			who_addr,
1393			to_addr,
1394			token_addr,
1395			amount
1396		) VALUES %s;`,
1397		escapeHatchWithdrawals[:],
1398	))
1399}
1400
1401// GetAllEscapeHatchWithdrawals retrieves all the escape hatch withdrawals
1402func (hdb *HistoryDB) GetAllEscapeHatchWithdrawals() ([]common.WDelayerEscapeHatchWithdrawal, error) {
1403	var escapeHatchWithdrawals []*common.WDelayerEscapeHatchWithdrawal
1404	err := meddler.QueryAll(
1405		hdb.db, &escapeHatchWithdrawals,
1406		"SELECT eth_block_num, who_addr, to_addr, token_addr, amount FROM escape_hatch_withdrawal ORDER BY item_id;",
1407	)
1408	return db.SlicePtrsToSlice(escapeHatchWithdrawals).([]common.WDelayerEscapeHatchWithdrawal),
1409		tracerr.Wrap(err)
1410}
1411
1412// SetInitialSCVars sets the initial state of rollup, auction, wdelayer smart
1413// contract variables.  This initial state is stored linked to block 0, which
1414// always exist in the DB and is used to store initialization data that always
1415// exist in the smart contracts.
1416func (hdb *HistoryDB) SetInitialSCVars(rollup *common.RollupVariables,
1417	auction *common.AuctionVariables, wDelayer *common.WDelayerVariables) error {
1418	txn, err := hdb.db.Beginx()
1419	if err != nil {
1420		return tracerr.Wrap(err)
1421	}
1422	defer func() {
1423		if err != nil {
1424			db.Rollback(txn)
1425		}
1426	}()
1427	// Force EthBlockNum to be 0 because it's the block used to link data
1428	// that belongs to the creation of the smart contracts
1429	rollup.EthBlockNum = 0
1430	auction.EthBlockNum = 0
1431	wDelayer.EthBlockNum = 0
1432	auction.DefaultSlotSetBidSlotNum = 0
1433	if err := hdb.setRollupVars(txn, rollup); err != nil {
1434		return tracerr.Wrap(err)
1435	}
1436	if err := hdb.setAuctionVars(txn, auction); err != nil {
1437		return tracerr.Wrap(err)
1438	}
1439	if err := hdb.setWDelayerVars(txn, wDelayer); err != nil {
1440		return tracerr.Wrap(err)
1441	}
1442
1443	return tracerr.Wrap(txn.Commit())
1444}
1445
1446// setL1UserTxEffectiveAmounts sets the EffectiveAmount and EffectiveDepositAmount
1447// of the given l1UserTxs (with an UPDATE)
1448func (hdb *HistoryDB) setL1UserTxEffectiveAmounts(d sqlx.Ext, txs []common.L1Tx) error {
1449	if len(txs) == 0 {
1450		return nil
1451	}
1452	// Effective amounts are stored as success flags in the DB, with true value by default
1453	// to reduce the amount of updates. Therefore, only amounts that became uneffective should be
1454	// updated to become false
1455	type txUpdate struct {
1456		ID                   common.TxID `db:"id"`
1457		AmountSuccess        bool        `db:"amount_success"`
1458		DepositAmountSuccess bool        `db:"deposit_amount_success"`
1459	}
1460	txUpdates := []txUpdate{}
1461	equal := func(a *big.Int, b *big.Int) bool {
1462		return a.Cmp(b) == 0
1463	}
1464	for i := range txs {
1465		amountSuccess := equal(txs[i].Amount, txs[i].EffectiveAmount)
1466		depositAmountSuccess := equal(txs[i].DepositAmount, txs[i].EffectiveDepositAmount)
1467		if !amountSuccess || !depositAmountSuccess {
1468			txUpdates = append(txUpdates, txUpdate{
1469				ID:                   txs[i].TxID,
1470				AmountSuccess:        amountSuccess,
1471				DepositAmountSuccess: depositAmountSuccess,
1472			})
1473		}
1474	}
1475	const query string = `
1476		UPDATE tx SET
1477			amount_success = tx_update.amount_success,
1478			deposit_amount_success = tx_update.deposit_amount_success
1479		FROM (VALUES
1480			(NULL::::BYTEA, NULL::::BOOL, NULL::::BOOL),
1481			(:id, :amount_success, :deposit_amount_success)
1482		) as tx_update (id, amount_success, deposit_amount_success)
1483		WHERE tx.id = tx_update.id;
1484	`
1485	if len(txUpdates) > 0 {
1486		if _, err := sqlx.NamedExec(d, query, txUpdates); err != nil {
1487			return tracerr.Wrap(err)
1488		}
1489	}
1490	return nil
1491}
1492
1493// AddBlockSCData stores all the information of a block retrieved by the
1494// Synchronizer.  Blocks should be inserted in order, leaving no gaps because
1495// the pagination system of the API/DB depends on this.  Within blocks, all
1496// items should also be in the correct order (Accounts, Tokens, Txs, etc.)
1497func (hdb *HistoryDB) AddBlockSCData(blockData *common.BlockData) (err error) {
1498	txn, err := hdb.db.Beginx()
1499	if err != nil {
1500		return tracerr.Wrap(err)
1501	}
1502	defer func() {
1503		if err != nil {
1504			db.Rollback(txn)
1505		}
1506	}()
1507
1508	// Add block
1509	if err := hdb.addBlock(txn, &blockData.Block); err != nil {
1510		return tracerr.Wrap(err)
1511	}
1512
1513	// Add Coordinators
1514	if err := hdb.addCoordinators(txn, blockData.Auction.Coordinators); err != nil {
1515		return tracerr.Wrap(err)
1516	}
1517
1518	// Add Bids
1519	if err := hdb.addBids(txn, blockData.Auction.Bids); err != nil {
1520		return tracerr.Wrap(err)
1521	}
1522
1523	// Add Tokens
1524	if err := hdb.addTokens(txn, blockData.Rollup.AddedTokens); err != nil {
1525		return tracerr.Wrap(err)
1526	}
1527
1528	// Prepare user L1 txs to be added.
1529	// They must be added before the batch that will forge them (which can be in the same block)
1530	// and after the account that will be sent to (also can be in the same block).
1531	// Note: insert order is not relevant since item_id will be updated by a DB trigger when
1532	// the batch that forges those txs is inserted
1533	userL1s := make(map[common.BatchNum][]common.L1Tx)
1534	for i := range blockData.Rollup.L1UserTxs {
1535		batchThatForgesIsInTheBlock := false
1536		for _, batch := range blockData.Rollup.Batches {
1537			if batch.Batch.ForgeL1TxsNum != nil &&
1538				*batch.Batch.ForgeL1TxsNum == *blockData.Rollup.L1UserTxs[i].ToForgeL1TxsNum {
1539				// Tx is forged in this block. It's guaranteed that:
1540				// * the first batch of the block won't forge user L1 txs that have been added in this block
1541				// * batch nums are sequential therefore it's safe to add the tx at batch.BatchNum -1
1542				batchThatForgesIsInTheBlock = true
1543				addAtBatchNum := batch.Batch.BatchNum - 1
1544				userL1s[addAtBatchNum] = append(userL1s[addAtBatchNum], blockData.Rollup.L1UserTxs[i])
1545				break
1546			}
1547		}
1548		if !batchThatForgesIsInTheBlock {
1549			// User artificial batchNum 0 to add txs that are not forge in this block
1550			// after all the accounts of the block have been added
1551			userL1s[0] = append(userL1s[0], blockData.Rollup.L1UserTxs[i])
1552		}
1553	}
1554
1555	// Add Batches
1556	for i := range blockData.Rollup.Batches {
1557		batch := &blockData.Rollup.Batches[i]
1558
1559		// Add Batch: this will trigger an update on the DB
1560		// that will set the batch num of forged L1 txs in this batch
1561		if err = hdb.addBatch(txn, &batch.Batch); err != nil {
1562			return tracerr.Wrap(err)
1563		}
1564
1565		// Set the EffectiveAmount and EffectiveDepositAmount of all the
1566		// L1UserTxs that have been forged in this batch
1567		if err = hdb.setL1UserTxEffectiveAmounts(txn, batch.L1UserTxs); err != nil {
1568			return tracerr.Wrap(err)
1569		}
1570
1571		// Add accounts
1572		if err := hdb.addAccounts(txn, batch.CreatedAccounts); err != nil {
1573			return tracerr.Wrap(err)
1574		}
1575
1576		// Add forged l1 coordinator Txs
1577		if err := hdb.addL1Txs(txn, batch.L1CoordinatorTxs); err != nil {
1578			return tracerr.Wrap(err)
1579		}
1580
1581		// Add l2 Txs
1582		if err := hdb.addL2Txs(txn, batch.L2Txs); err != nil {
1583			return tracerr.Wrap(err)
1584		}
1585
1586		// Add user L1 txs that will be forged in next batch
1587		if userlL1s, ok := userL1s[batch.Batch.BatchNum]; ok {
1588			if err := hdb.addL1Txs(txn, userlL1s); err != nil {
1589				return tracerr.Wrap(err)
1590			}
1591		}
1592
1593		// Add exit tree
1594		if err := hdb.addExitTree(txn, batch.ExitTree); err != nil {
1595			return tracerr.Wrap(err)
1596		}
1597	}
1598	// Add user L1 txs that won't be forged in this block
1599	if userL1sNotForgedInThisBlock, ok := userL1s[0]; ok {
1600		if err := hdb.addL1Txs(txn, userL1sNotForgedInThisBlock); err != nil {
1601			return tracerr.Wrap(err)
1602		}
1603	}
1604
1605	// Set SC Vars if there was an update
1606	if blockData.Rollup.Vars != nil {
1607		if err := hdb.setRollupVars(txn, blockData.Rollup.Vars); err != nil {
1608			return tracerr.Wrap(err)
1609		}
1610	}
1611	if blockData.Auction.Vars != nil {
1612		if err := hdb.setAuctionVars(txn, blockData.Auction.Vars); err != nil {
1613			return tracerr.Wrap(err)
1614		}
1615	}
1616	if blockData.WDelayer.Vars != nil {
1617		if err := hdb.setWDelayerVars(txn, blockData.WDelayer.Vars); err != nil {
1618			return tracerr.Wrap(err)
1619		}
1620	}
1621
1622	// Update withdrawals in exit tree table
1623	if err := hdb.updateExitTree(txn, blockData.Block.Num,
1624		blockData.Rollup.Withdrawals, blockData.WDelayer.Withdrawals); err != nil {
1625		return tracerr.Wrap(err)
1626	}
1627
1628	// Add Escape Hatch Withdrawals
1629	if err := hdb.addEscapeHatchWithdrawals(txn,
1630		blockData.WDelayer.EscapeHatchWithdrawals); err != nil {
1631		return tracerr.Wrap(err)
1632	}
1633
1634	// Add Buckets withdrawals updates
1635	if err := hdb.addBucketUpdates(txn, blockData.Rollup.UpdateBucketWithdraw); err != nil {
1636		return tracerr.Wrap(err)
1637	}
1638
1639	// Add Token exchange updates
1640	if err := hdb.addTokenExchanges(txn, blockData.Rollup.TokenExchanges); err != nil {
1641		return tracerr.Wrap(err)
1642	}
1643
1644	return tracerr.Wrap(txn.Commit())
1645}
1646
1647// GetCoordinatorAPI returns a coordinator by its bidderAddr
1648func (hdb *HistoryDB) GetCoordinatorAPI(bidderAddr ethCommon.Address) (*CoordinatorAPI, error) {
1649	coordinator := &CoordinatorAPI{}
1650	err := meddler.QueryRow(hdb.db, coordinator, "SELECT * FROM coordinator WHERE bidder_addr = $1;", bidderAddr)
1651	return coordinator, tracerr.Wrap(err)
1652}
1653
1654// GetCoordinatorsAPI returns a list of coordinators from the DB and pagination info
1655func (hdb *HistoryDB) GetCoordinatorsAPI(
1656	bidderAddr, forgerAddr *ethCommon.Address,
1657	fromItem, limit *uint, order string,
1658) ([]CoordinatorAPI, uint64, error) {
1659	var query string
1660	var args []interface{}
1661	queryStr := `SELECT coordinator.*, 
1662	COUNT(*) OVER() AS total_items
1663	FROM coordinator `
1664	// Apply filters
1665	nextIsAnd := false
1666	if bidderAddr != nil {
1667		queryStr += "WHERE bidder_addr = ? "
1668		nextIsAnd = true
1669		args = append(args, bidderAddr)
1670	}
1671	if forgerAddr != nil {
1672		if nextIsAnd {
1673			queryStr += "AND "
1674		} else {
1675			queryStr += "WHERE "
1676		}
1677		queryStr += "forger_addr = ? "
1678		nextIsAnd = true
1679		args = append(args, forgerAddr)
1680	}
1681	if fromItem != nil {
1682		if nextIsAnd {
1683			queryStr += "AND "
1684		} else {
1685			queryStr += "WHERE "
1686		}
1687		if order == OrderAsc {
1688			queryStr += "coordinator.item_id >= ? "
1689		} else {
1690			queryStr += "coordinator.item_id <= ? "
1691		}
1692		args = append(args, fromItem)
1693	}
1694	// pagination
1695	queryStr += "ORDER BY coordinator.item_id "
1696	if order == OrderAsc {
1697		queryStr += " ASC "
1698	} else {
1699		queryStr += " DESC "
1700	}
1701	queryStr += fmt.Sprintf("LIMIT %d;", *limit)
1702	query = hdb.db.Rebind(queryStr)
1703
1704	coordinators := []*CoordinatorAPI{}
1705	if err := meddler.QueryAll(hdb.db, &coordinators, query, args...); err != nil {
1706		return nil, 0, tracerr.Wrap(err)
1707	}
1708	if len(coordinators) == 0 {
1709		return []CoordinatorAPI{}, 0, nil
1710	}
1711	return db.SlicePtrsToSlice(coordinators).([]CoordinatorAPI),
1712		coordinators[0].TotalItems - uint64(len(coordinators)), nil
1713}
1714
1715// AddAuctionVars insert auction vars into the DB
1716func (hdb *HistoryDB) AddAuctionVars(auctionVars *common.AuctionVariables) error {
1717	return tracerr.Wrap(meddler.Insert(hdb.db, "auction_vars", auctionVars))
1718}
1719
1720// GetAuctionVars returns auction variables
1721func (hdb *HistoryDB) GetAuctionVars() (*common.AuctionVariables, error) {
1722	auctionVars := &common.AuctionVariables{}
1723	err := meddler.QueryRow(
1724		hdb.db, auctionVars, `SELECT * FROM auction_vars;`,
1725	)
1726	return auctionVars, tracerr.Wrap(err)
1727}
1728
1729// GetAuctionVarsUntilSetSlotNum returns all the updates of the auction vars
1730// from the last entry in which DefaultSlotSetBidSlotNum <= slotNum
1731func (hdb *HistoryDB) GetAuctionVarsUntilSetSlotNum(slotNum int64, maxItems int) ([]MinBidInfo, error) {
1732	auctionVars := []*MinBidInfo{}
1733	query := `
1734		SELECT DISTINCT default_slot_set_bid, default_slot_set_bid_slot_num FROM auction_vars
1735		WHERE default_slot_set_bid_slot_num < $1
1736		ORDER BY default_slot_set_bid_slot_num DESC
1737		LIMIT $2;
1738	`
1739	err := meddler.QueryAll(hdb.db, &auctionVars, query, slotNum, maxItems)
1740	if err != nil {
1741		return nil, tracerr.Wrap(err)
1742	}
1743	return db.SlicePtrsToSlice(auctionVars).([]MinBidInfo), nil
1744}
1745
1746// GetAccountAPI returns an account by its index
1747func (hdb *HistoryDB) GetAccountAPI(idx common.Idx) (*AccountAPI, error) {
1748	account := &AccountAPI{}
1749	err := meddler.QueryRow(hdb.db, account, `SELECT account.item_id, hez_idx(account.idx, 
1750	token.symbol) as idx, account.batch_num, account.bjj, account.eth_addr,
1751	token.token_id, token.item_id AS token_item_id, token.eth_block_num AS token_block,
1752	token.eth_addr as token_eth_addr, token.name, token.symbol, token.decimals, token.usd, token.usd_update 
1753	FROM account INNER JOIN token ON account.token_id = token.token_id WHERE idx = $1;`, idx)
1754
1755	if err != nil {
1756		return nil, tracerr.Wrap(err)
1757	}
1758
1759	return account, nil
1760}
1761
1762// GetAccountsAPI returns a list of accounts from the DB and pagination info
1763func (hdb *HistoryDB) GetAccountsAPI(
1764	tokenIDs []common.TokenID, ethAddr *ethCommon.Address,
1765	bjj *babyjub.PublicKeyComp, fromItem, limit *uint, order string,
1766) ([]AccountAPI, uint64, error) {
1767	if ethAddr != nil && bjj != nil {
1768		return nil, 0, tracerr.Wrap(errors.New("ethAddr and bjj are incompatible"))
1769	}
1770	var query string
1771	var args []interface{}
1772	queryStr := `SELECT account.item_id, hez_idx(account.idx, token.symbol) as idx, account.batch_num, 
1773	account.bjj, account.eth_addr, token.token_id, token.item_id AS token_item_id, token.eth_block_num AS token_block,
1774	token.eth_addr as token_eth_addr, token.name, token.symbol, token.decimals, token.usd, token.usd_update, 
1775	COUNT(*) OVER() AS total_items
1776	FROM account INNER JOIN token ON account.token_id = token.token_id `
1777	// Apply filters
1778	nextIsAnd := false
1779	// ethAddr filter
1780	if ethAddr != nil {
1781		queryStr += "WHERE account.eth_addr = ? "
1782		nextIsAnd = true
1783		args = append(args, ethAddr)
1784	} else if bjj != nil { // bjj filter
1785		queryStr += "WHERE account.bjj = ? "
1786		nextIsAnd = true
1787		args = append(args, bjj)
1788	}
1789	// tokenID filter
1790	if len(tokenIDs) > 0 {
1791		if nextIsAnd {
1792			queryStr += "AND "
1793		} else {
1794			queryStr += "WHERE "
1795		}
1796		queryStr += "account.token_id IN (?) "
1797		args = append(args, tokenIDs)
1798		nextIsAnd = true
1799	}
1800	if fromItem != nil {
1801		if nextIsAnd {
1802			queryStr += "AND "
1803		} else {
1804			queryStr += "WHERE "
1805		}
1806		if order == OrderAsc {
1807			queryStr += "account.item_id >= ? "
1808		} else {
1809			queryStr += "account.item_id <= ? "
1810		}
1811		args = append(args, fromItem)
1812	}
1813	// pagination
1814	queryStr += "ORDER BY account.item_id "
1815	if order == OrderAsc {
1816		queryStr += " ASC "
1817	} else {
1818		queryStr += " DESC "
1819	}
1820	queryStr += fmt.Sprintf("LIMIT %d;", *limit)
1821	query, argsQ, err := sqlx.In(queryStr, args...)
1822	if err != nil {
1823		return nil, 0, tracerr.Wrap(err)
1824	}
1825	query = hdb.db.Rebind(query)
1826
1827	accounts := []*AccountAPI{}
1828	if err := meddler.QueryAll(hdb.db, &accounts, query, argsQ...); err != nil {
1829		return nil, 0, tracerr.Wrap(err)
1830	}
1831	if len(accounts) == 0 {
1832		return []AccountAPI{}, 0, nil
1833	}
1834
1835	return db.SlicePtrsToSlice(accounts).([]AccountAPI),
1836		accounts[0].TotalItems - uint64(len(accounts)), nil
1837}
1838
1839// GetMetrics returns metrics
1840func (hdb *HistoryDB) GetMetrics(lastBatchNum common.BatchNum) (*Metrics, error) {
1841	metricsTotals := &MetricsTotals{}
1842	metrics := &Metrics{}
1843	err := meddler.QueryRow(
1844		hdb.db, metricsTotals, `SELECT COUNT(tx.*) as total_txs,
1845		COALESCE (MIN(tx.batch_num), 0) as batch_num, COALESCE (MIN(block.timestamp), 
1846		NOW()) AS min_timestamp, COALESCE (MAX(block.timestamp), NOW()) AS max_timestamp
1847		FROM tx INNER JOIN block ON tx.eth_block_num = block.eth_block_num
1848		WHERE block.timestamp >= NOW() - INTERVAL '24 HOURS';`)
1849	if err != nil {
1850		return nil, tracerr.Wrap(err)
1851	}
1852
1853	seconds := metricsTotals.MaxTimestamp.Sub(metricsTotals.MinTimestamp).Seconds()
1854	// Avoid dividing by 0
1855	if seconds == 0 {
1856		seconds++
1857	}
1858
1859	metrics.TransactionsPerSecond = float64(metricsTotals.TotalTransactions) / seconds
1860
1861	if (lastBatchNum - metricsTotals.FirstBatchNum) > 0 {
1862		metrics.TransactionsPerBatch = float64(metricsTotals.TotalTransactions) /
1863			float64(lastBatchNum-metricsTotals.FirstBatchNum+1)
1864	} else {
1865		metrics.TransactionsPerBatch = float64(0)
1866	}
1867
1868	err = meddler.QueryRow(
1869		hdb.db, metricsTotals, `SELECT COUNT(*) AS total_batches, 
1870		COALESCE (SUM(total_fees_usd), 0) AS total_fees FROM batch 
1871		WHERE batch_num > $1;`, metricsTotals.FirstBatchNum)
1872	if err != nil {
1873		return nil, tracerr.Wrap(err)
1874	}
1875	if metricsTotals.TotalBatches > 0 {
1876		metrics.BatchFrequency = seconds / float64(metricsTotals.TotalBatches)
1877	} else {
1878		metrics.BatchFrequency = 0
1879	}
1880	if metricsTotals.TotalTransactions > 0 {
1881		metrics.AvgTransactionFee = metricsTotals.TotalFeesUSD / float64(metricsTotals.TotalTransactions)
1882	} else {
1883		metrics.AvgTransactionFee = 0
1884	}
1885	err = meddler.QueryRow(
1886		hdb.db, metrics,
1887		`SELECT COUNT(*) AS total_bjjs, COUNT(DISTINCT(bjj)) AS total_accounts FROM account;`)
1888	if err != nil {
1889		return nil, tracerr.Wrap(err)
1890	}
1891
1892	return metrics, nil
1893}
1894
1895// GetAvgTxFee returns average transaction fee of the last 1h
1896func (hdb *HistoryDB) GetAvgTxFee() (float64, error) {
1897	metricsTotals := &MetricsTotals{}
1898	err := meddler.QueryRow(
1899		hdb.db, metricsTotals, `SELECT COUNT(tx.*) as total_txs, 
1900		COALESCE (MIN(tx.batch_num), 0) as batch_num 
1901		FROM tx INNER JOIN block ON tx.eth_block_num = block.eth_block_num
1902		WHERE block.timestamp >= NOW() - INTERVAL '1 HOURS';`)
1903	if err != nil {
1904		return 0, tracerr.Wrap(err)
1905	}
1906	err = meddler.QueryRow(
1907		hdb.db, metricsTotals, `SELECT COUNT(*) AS total_batches, 
1908		COALESCE (SUM(total_fees_usd), 0) AS total_fees FROM batch 
1909		WHERE batch_num > $1;`, metricsTotals.FirstBatchNum)
1910	if err != nil {
1911		return 0, tracerr.Wrap(err)
1912	}
1913
1914	var avgTransactionFee float64
1915	if metricsTotals.TotalTransactions > 0 {
1916		avgTransactionFee = metricsTotals.TotalFeesUSD / float64(metricsTotals.TotalTransactions)
1917	} else {
1918		avgTransactionFee = 0
1919	}
1920
1921	return avgTransactionFee, nil
1922}