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