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