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/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 meddler.Insert(d, "block", block)
  50}
  51
  52// AddBlocks inserts blocks into the DB
  53func (hdb *HistoryDB) AddBlocks(blocks []common.Block) error {
  54	return hdb.addBlocks(hdb.db, blocks)
  55}
  56
  57func (hdb *HistoryDB) addBlocks(d meddler.DB, blocks []common.Block) error {
  58	return 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, 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;",
  85	)
  86	return db.SlicePtrsToSlice(blocks).([]common.Block), 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;",
  95		from, to,
  96	)
  97	return db.SlicePtrsToSlice(blocks).([]common.Block), 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, 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 err
 132		}
 133		query = hdb.db.Rebind(query)
 134		if err := meddler.QueryAll(
 135			hdb.db, &tokenPrices, query, args...,
 136		); err != nil {
 137			return 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 meddler.Insert(d, "batch", batch)
 153}
 154
 155// AddBatches insert Bids into the DB
 156func (hdb *HistoryDB) AddBatches(batches []common.Batch) error {
 157	return 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 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, meddler.QueryRow(
 172		hdb.db, batch,
 173		`SELECT batch.*, block.timestamp, block.hash
 174	 	FROM batch INNER JOIN block ON batch.eth_block_num = block.eth_block_num
 175	 	WHERE batch_num = $1;`, batchNum,
 176	)
 177}
 178
 179// GetBatchesAPI return the batches applying the given filters
 180func (hdb *HistoryDB) GetBatchesAPI(
 181	minBatchNum, maxBatchNum, slotNum *uint,
 182	forgerAddr *ethCommon.Address,
 183	fromItem, limit *uint, order string,
 184) ([]BatchAPI, uint64, error) {
 185	var query string
 186	var args []interface{}
 187	queryStr := `SELECT batch.*, block.timestamp, block.hash,
 188	count(*) OVER() AS total_items
 189	FROM batch INNER JOIN block ON batch.eth_block_num = block.eth_block_num `
 190	// Apply filters
 191	nextIsAnd := false
 192	// minBatchNum filter
 193	if minBatchNum != nil {
 194		if nextIsAnd {
 195			queryStr += "AND "
 196		} else {
 197			queryStr += "WHERE "
 198		}
 199		queryStr += "batch.batch_num > ? "
 200		args = append(args, minBatchNum)
 201		nextIsAnd = true
 202	}
 203	// maxBatchNum filter
 204	if maxBatchNum != nil {
 205		if nextIsAnd {
 206			queryStr += "AND "
 207		} else {
 208			queryStr += "WHERE "
 209		}
 210		queryStr += "batch.batch_num < ? "
 211		args = append(args, maxBatchNum)
 212		nextIsAnd = true
 213	}
 214	// slotNum filter
 215	if slotNum != nil {
 216		if nextIsAnd {
 217			queryStr += "AND "
 218		} else {
 219			queryStr += "WHERE "
 220		}
 221		queryStr += "batch.slot_num = ? "
 222		args = append(args, slotNum)
 223		nextIsAnd = true
 224	}
 225	// forgerAddr filter
 226	if forgerAddr != nil {
 227		if nextIsAnd {
 228			queryStr += "AND "
 229		} else {
 230			queryStr += "WHERE "
 231		}
 232		queryStr += "batch.forger_addr = ? "
 233		args = append(args, forgerAddr)
 234		nextIsAnd = true
 235	}
 236	// pagination
 237	if fromItem != nil {
 238		if nextIsAnd {
 239			queryStr += "AND "
 240		} else {
 241			queryStr += "WHERE "
 242		}
 243		if order == OrderAsc {
 244			queryStr += "batch.item_id >= ? "
 245		} else {
 246			queryStr += "batch.item_id <= ? "
 247		}
 248		args = append(args, fromItem)
 249	}
 250	queryStr += "ORDER BY batch.item_id "
 251	if order == OrderAsc {
 252		queryStr += " ASC "
 253	} else {
 254		queryStr += " DESC "
 255	}
 256	queryStr += fmt.Sprintf("LIMIT %d;", *limit)
 257	query = hdb.db.Rebind(queryStr)
 258	// log.Debug(query)
 259	batchPtrs := []*BatchAPI{}
 260	if err := meddler.QueryAll(hdb.db, &batchPtrs, query, args...); err != nil {
 261		return nil, 0, err
 262	}
 263	batches := db.SlicePtrsToSlice(batchPtrs).([]BatchAPI)
 264	if len(batches) == 0 {
 265		return nil, 0, sql.ErrNoRows
 266	}
 267	return batches, batches[0].TotalItems - uint64(len(batches)), nil
 268}
 269
 270// GetAllBatches retrieve all batches from the DB
 271func (hdb *HistoryDB) GetAllBatches() ([]common.Batch, error) {
 272	var batches []*common.Batch
 273	err := meddler.QueryAll(
 274		hdb.db, &batches,
 275		`SELECT batch.batch_num, batch.eth_block_num, batch.forger_addr, batch.fees_collected,
 276		 batch.fee_idxs_coordinator, batch.state_root, batch.num_accounts, batch.last_idx, batch.exit_root,
 277		 batch.forge_l1_txs_num, batch.slot_num, batch.total_fees_usd FROM batch;`,
 278	)
 279	return db.SlicePtrsToSlice(batches).([]common.Batch), err
 280}
 281
 282// GetBatches retrieve batches from the DB, given a range of batch numbers defined by from and to
 283func (hdb *HistoryDB) GetBatches(from, to common.BatchNum) ([]common.Batch, error) {
 284	var batches []*common.Batch
 285	err := meddler.QueryAll(
 286		hdb.db, &batches,
 287		"SELECT * FROM batch WHERE $1 <= batch_num AND batch_num < $2;",
 288		from, to,
 289	)
 290	return db.SlicePtrsToSlice(batches).([]common.Batch), err
 291}
 292
 293// GetLastBatchNum returns the BatchNum of the latest forged batch
 294func (hdb *HistoryDB) GetLastBatchNum() (common.BatchNum, error) {
 295	row := hdb.db.QueryRow("SELECT batch_num FROM batch ORDER BY batch_num DESC LIMIT 1;")
 296	var batchNum common.BatchNum
 297	return batchNum, row.Scan(&batchNum)
 298}
 299
 300// GetLastL1TxsNum returns the greatest ForgeL1TxsNum in the DB from forged
 301// batches.  If there's no batch in the DB (nil, nil) is returned.
 302func (hdb *HistoryDB) GetLastL1TxsNum() (*int64, error) {
 303	row := hdb.db.QueryRow("SELECT MAX(forge_l1_txs_num) FROM batch;")
 304	lastL1TxsNum := new(int64)
 305	return lastL1TxsNum, row.Scan(&lastL1TxsNum)
 306}
 307
 308// Reorg deletes all the information that was added into the DB after the
 309// lastValidBlock.  If lastValidBlock is negative, all block information is
 310// deleted.
 311func (hdb *HistoryDB) Reorg(lastValidBlock int64) error {
 312	var err error
 313	if lastValidBlock < 0 {
 314		_, err = hdb.db.Exec("DELETE FROM block;")
 315	} else {
 316		_, err = hdb.db.Exec("DELETE FROM block WHERE eth_block_num > $1;", lastValidBlock)
 317	}
 318	return err
 319}
 320
 321// SyncPoD stores all the data that can be changed / added on a block in the PoD SC
 322func (hdb *HistoryDB) SyncPoD(
 323	blockNum uint64,
 324	bids []common.Bid,
 325	coordinators []common.Coordinator,
 326	vars *common.AuctionVariables,
 327) error {
 328	return nil
 329}
 330
 331// AddBids insert Bids into the DB
 332func (hdb *HistoryDB) AddBids(bids []common.Bid) error { return hdb.addBids(hdb.db, bids) }
 333func (hdb *HistoryDB) addBids(d meddler.DB, bids []common.Bid) error {
 334	// TODO: check the coordinator info
 335	return db.BulkInsert(
 336		d,
 337		"INSERT INTO bid (slot_num, bid_value, eth_block_num, bidder_addr) VALUES %s;",
 338		bids[:],
 339	)
 340}
 341
 342// GetAllBids retrieve all bids from the DB
 343func (hdb *HistoryDB) GetAllBids() ([]common.Bid, error) {
 344	var bids []*common.Bid
 345	err := meddler.QueryAll(
 346		hdb.db, &bids,
 347		`SELECT bid.slot_num, bid.bid_value, bid.eth_block_num, bid.bidder_addr FROM bid;`,
 348	)
 349	return db.SlicePtrsToSlice(bids).([]common.Bid), err
 350}
 351
 352// GetBestBidAPI returns the best bid in specific slot by slotNum
 353func (hdb *HistoryDB) GetBestBidAPI(slotNum *int64) (BidAPI, error) {
 354	bid := &BidAPI{}
 355	err := meddler.QueryRow(
 356		hdb.db, bid, `SELECT bid.*, block.timestamp, coordinator.forger_addr, coordinator.url 
 357		FROM bid INNER JOIN block ON bid.eth_block_num = block.eth_block_num 
 358		INNER JOIN coordinator ON bid.bidder_addr = coordinator.bidder_addr 
 359		WHERE slot_num = $1 ORDER BY item_id DESC LIMIT 1;`, slotNum,
 360	)
 361	return *bid, err
 362}
 363
 364// GetBestBidsAPI returns the best bid in specific slot by slotNum
 365func (hdb *HistoryDB) GetBestBidsAPI(
 366	minSlotNum, maxSlotNum *int64,
 367	bidderAddr *ethCommon.Address,
 368	limit *uint, order string,
 369) ([]BidAPI, uint64, error) {
 370	var query string
 371	var args []interface{}
 372	queryStr := `SELECT b.*, block.timestamp, coordinator.forger_addr, coordinator.url, 
 373	COUNT(*) OVER() AS total_items FROM (
 374	   SELECT slot_num, MAX(item_id) as maxitem 
 375	   FROM bid GROUP BY slot_num
 376	   )
 377	AS x INNER JOIN bid AS b ON b.item_id = x.maxitem
 378	INNER JOIN block ON b.eth_block_num = block.eth_block_num
 379	INNER JOIN coordinator ON b.bidder_addr = coordinator.bidder_addr 
 380	WHERE (b.slot_num >= ? AND b.slot_num <= ?)`
 381	args = append(args, minSlotNum)
 382	args = append(args, maxSlotNum)
 383	// Apply filters
 384	if bidderAddr != nil {
 385		queryStr += " AND b.bidder_addr = ? "
 386		args = append(args, bidderAddr)
 387	}
 388	queryStr += " ORDER BY b.slot_num "
 389	if order == OrderAsc {
 390		queryStr += "ASC "
 391	} else {
 392		queryStr += "DESC "
 393	}
 394	if limit != nil {
 395		queryStr += fmt.Sprintf("LIMIT %d;", *limit)
 396	}
 397	query = hdb.db.Rebind(queryStr)
 398	bidPtrs := []*BidAPI{}
 399	if err := meddler.QueryAll(hdb.db, &bidPtrs, query, args...); err != nil {
 400		return nil, 0, err
 401	}
 402	// log.Debug(query)
 403	bids := db.SlicePtrsToSlice(bidPtrs).([]BidAPI)
 404	if len(bids) == 0 {
 405		return nil, 0, sql.ErrNoRows
 406	}
 407	return bids, bids[0].TotalItems - uint64(len(bids)), nil
 408}
 409
 410// GetBidsAPI return the bids applying the given filters
 411func (hdb *HistoryDB) GetBidsAPI(
 412	slotNum *int64, forgerAddr *ethCommon.Address,
 413	fromItem, limit *uint, order string,
 414) ([]BidAPI, uint64, error) {
 415	var query string
 416	var args []interface{}
 417	queryStr := `SELECT bid.*, block.timestamp, coordinator.forger_addr, coordinator.url, 
 418	COUNT(*) OVER() AS total_items
 419	FROM bid INNER JOIN block ON bid.eth_block_num = block.eth_block_num 
 420	INNER JOIN coordinator ON bid.bidder_addr = coordinator.bidder_addr `
 421	// Apply filters
 422	nextIsAnd := false
 423	// slotNum filter
 424	if slotNum != nil {
 425		if nextIsAnd {
 426			queryStr += "AND "
 427		} else {
 428			queryStr += "WHERE "
 429		}
 430		queryStr += "bid.slot_num = ? "
 431		args = append(args, slotNum)
 432		nextIsAnd = true
 433	}
 434	// slotNum filter
 435	if forgerAddr != nil {
 436		if nextIsAnd {
 437			queryStr += "AND "
 438		} else {
 439			queryStr += "WHERE "
 440		}
 441		queryStr += "bid.bidder_addr = ? "
 442		args = append(args, forgerAddr)
 443		nextIsAnd = true
 444	}
 445	if fromItem != nil {
 446		if nextIsAnd {
 447			queryStr += "AND "
 448		} else {
 449			queryStr += "WHERE "
 450		}
 451		if order == OrderAsc {
 452			queryStr += "bid.item_id >= ? "
 453		} else {
 454			queryStr += "bid.item_id <= ? "
 455		}
 456		args = append(args, fromItem)
 457	}
 458	// pagination
 459	queryStr += "ORDER BY bid.item_id "
 460	if order == OrderAsc {
 461		queryStr += "ASC "
 462	} else {
 463		queryStr += "DESC "
 464	}
 465	queryStr += fmt.Sprintf("LIMIT %d;", *limit)
 466	query, argsQ, err := sqlx.In(queryStr, args...)
 467	if err != nil {
 468		return nil, 0, err
 469	}
 470	query = hdb.db.Rebind(query)
 471	bids := []*BidAPI{}
 472	if err := meddler.QueryAll(hdb.db, &bids, query, argsQ...); err != nil {
 473		return nil, 0, err
 474	}
 475	if len(bids) == 0 {
 476		return nil, 0, sql.ErrNoRows
 477	}
 478	return db.SlicePtrsToSlice(bids).([]BidAPI), bids[0].TotalItems - uint64(len(bids)), nil
 479}
 480
 481// AddCoordinators insert Coordinators into the DB
 482func (hdb *HistoryDB) AddCoordinators(coordinators []common.Coordinator) error {
 483	return hdb.addCoordinators(hdb.db, coordinators)
 484}
 485func (hdb *HistoryDB) addCoordinators(d meddler.DB, coordinators []common.Coordinator) error {
 486	return db.BulkInsert(
 487		d,
 488		"INSERT INTO coordinator (bidder_addr, forger_addr, eth_block_num, url) VALUES %s;",
 489		coordinators[:],
 490	)
 491}
 492
 493// AddExitTree insert Exit tree into the DB
 494func (hdb *HistoryDB) AddExitTree(exitTree []common.ExitInfo) error {
 495	return hdb.addExitTree(hdb.db, exitTree)
 496}
 497func (hdb *HistoryDB) addExitTree(d meddler.DB, exitTree []common.ExitInfo) error {
 498	return db.BulkInsert(
 499		d,
 500		"INSERT INTO exit_tree (batch_num, account_idx, merkle_proof, balance, "+
 501			"instant_withdrawn, delayed_withdraw_request, delayed_withdrawn) VALUES %s;",
 502		exitTree[:],
 503	)
 504}
 505
 506// AddToken insert a token into the DB
 507func (hdb *HistoryDB) AddToken(token *common.Token) error {
 508	return meddler.Insert(hdb.db, "token", token)
 509}
 510
 511// AddTokens insert tokens into the DB
 512func (hdb *HistoryDB) AddTokens(tokens []common.Token) error { return hdb.addTokens(hdb.db, tokens) }
 513func (hdb *HistoryDB) addTokens(d meddler.DB, tokens []common.Token) error {
 514	return db.BulkInsert(
 515		d,
 516		`INSERT INTO token (
 517			token_id,
 518			eth_block_num,
 519			eth_addr,
 520			name,
 521			symbol,
 522			decimals
 523		) VALUES %s;`,
 524		tokens[:],
 525	)
 526}
 527
 528// UpdateTokenValue updates the USD value of a token
 529func (hdb *HistoryDB) UpdateTokenValue(tokenSymbol string, value float64) error {
 530	_, err := hdb.db.Exec(
 531		"UPDATE token SET usd = $1 WHERE symbol = $2;",
 532		value, tokenSymbol,
 533	)
 534	return err
 535}
 536
 537// GetToken returns a token from the DB given a TokenID
 538func (hdb *HistoryDB) GetToken(tokenID common.TokenID) (*TokenWithUSD, error) {
 539	token := &TokenWithUSD{}
 540	err := meddler.QueryRow(
 541		hdb.db, token, `SELECT * FROM token WHERE token_id = $1;`, tokenID,
 542	)
 543	return token, err
 544}
 545
 546// GetAllTokens returns all tokens from the DB
 547func (hdb *HistoryDB) GetAllTokens() ([]TokenWithUSD, error) {
 548	var tokens []*TokenWithUSD
 549	err := meddler.QueryAll(
 550		hdb.db, &tokens,
 551		"SELECT * FROM token ORDER BY token_id;",
 552	)
 553	return db.SlicePtrsToSlice(tokens).([]TokenWithUSD), err
 554}
 555
 556// GetTokens returns a list of tokens from the DB
 557func (hdb *HistoryDB) GetTokens(
 558	ids []common.TokenID, symbols []string, name string, fromItem,
 559	limit *uint, order string,
 560) ([]TokenWithUSD, uint64, error) {
 561	var query string
 562	var args []interface{}
 563	queryStr := `SELECT * , COUNT(*) OVER() AS total_items FROM token `
 564	// Apply filters
 565	nextIsAnd := false
 566	if len(ids) > 0 {
 567		queryStr += "WHERE token_id IN (?) "
 568		nextIsAnd = true
 569		args = append(args, ids)
 570	}
 571	if len(symbols) > 0 {
 572		if nextIsAnd {
 573			queryStr += "AND "
 574		} else {
 575			queryStr += "WHERE "
 576		}
 577		queryStr += "symbol IN (?) "
 578		args = append(args, symbols)
 579		nextIsAnd = true
 580	}
 581	if name != "" {
 582		if nextIsAnd {
 583			queryStr += "AND "
 584		} else {
 585			queryStr += "WHERE "
 586		}
 587		queryStr += "name ~ ? "
 588		args = append(args, name)
 589		nextIsAnd = true
 590	}
 591	if fromItem != nil {
 592		if nextIsAnd {
 593			queryStr += "AND "
 594		} else {
 595			queryStr += "WHERE "
 596		}
 597		if order == OrderAsc {
 598			queryStr += "item_id >= ? "
 599		} else {
 600			queryStr += "item_id <= ? "
 601		}
 602		args = append(args, fromItem)
 603	}
 604	// pagination
 605	queryStr += "ORDER BY item_id "
 606	if order == OrderAsc {
 607		queryStr += "ASC "
 608	} else {
 609		queryStr += "DESC "
 610	}
 611	queryStr += fmt.Sprintf("LIMIT %d;", *limit)
 612	query, argsQ, err := sqlx.In(queryStr, args...)
 613	if err != nil {
 614		return nil, 0, err
 615	}
 616	query = hdb.db.Rebind(query)
 617	tokens := []*TokenWithUSD{}
 618	if err := meddler.QueryAll(hdb.db, &tokens, query, argsQ...); err != nil {
 619		return nil, 0, err
 620	}
 621	if len(tokens) == 0 {
 622		return nil, 0, sql.ErrNoRows
 623	}
 624	return db.SlicePtrsToSlice(tokens).([]TokenWithUSD), uint64(len(tokens)) - tokens[0].TotalItems, nil
 625}
 626
 627// GetTokenSymbols returns all the token symbols from the DB
 628func (hdb *HistoryDB) GetTokenSymbols() ([]string, error) {
 629	var tokenSymbols []string
 630	rows, err := hdb.db.Query("SELECT symbol FROM token;")
 631	if err != nil {
 632		return nil, err
 633	}
 634	sym := new(string)
 635	for rows.Next() {
 636		err = rows.Scan(sym)
 637		if err != nil {
 638			return nil, err
 639		}
 640		tokenSymbols = append(tokenSymbols, *sym)
 641	}
 642	return tokenSymbols, nil
 643}
 644
 645// AddAccounts insert accounts into the DB
 646func (hdb *HistoryDB) AddAccounts(accounts []common.Account) error {
 647	return hdb.addAccounts(hdb.db, accounts)
 648}
 649func (hdb *HistoryDB) addAccounts(d meddler.DB, accounts []common.Account) error {
 650	return db.BulkInsert(
 651		d,
 652		`INSERT INTO account (
 653			idx,
 654			token_id,
 655			batch_num,
 656			bjj,
 657			eth_addr
 658		) VALUES %s;`,
 659		accounts[:],
 660	)
 661}
 662
 663// GetAccounts returns a list of accounts from the DB
 664func (hdb *HistoryDB) GetAccounts() ([]common.Account, error) {
 665	var accs []*common.Account
 666	err := meddler.QueryAll(
 667		hdb.db, &accs,
 668		"SELECT * FROM account ORDER BY idx;",
 669	)
 670	return db.SlicePtrsToSlice(accs).([]common.Account), err
 671}
 672
 673// AddL1Txs inserts L1 txs to the DB. USD and LoadAmountUSD will be set automatically before storing the tx.
 674// If the tx is originated by a coordinator, BatchNum must be provided. If it's originated by a user,
 675// BatchNum should be null, and the value will be setted by a trigger when a batch forges the tx.
 676func (hdb *HistoryDB) AddL1Txs(l1txs []common.L1Tx) error { return hdb.addL1Txs(hdb.db, l1txs) }
 677
 678// addL1Txs inserts L1 txs to the DB. USD and LoadAmountUSD will be set automatically before storing the tx.
 679// If the tx is originated by a coordinator, BatchNum must be provided. If it's originated by a user,
 680// BatchNum should be null, and the value will be setted by a trigger when a batch forges the tx.
 681func (hdb *HistoryDB) addL1Txs(d meddler.DB, l1txs []common.L1Tx) error {
 682	txs := []txWrite{}
 683	for i := 0; i < len(l1txs); i++ {
 684		af := new(big.Float).SetInt(l1txs[i].Amount)
 685		amountFloat, _ := af.Float64()
 686		laf := new(big.Float).SetInt(l1txs[i].LoadAmount)
 687		loadAmountFloat, _ := laf.Float64()
 688		txs = append(txs, txWrite{
 689			// Generic
 690			IsL1:        true,
 691			TxID:        l1txs[i].TxID,
 692			Type:        l1txs[i].Type,
 693			Position:    l1txs[i].Position,
 694			FromIdx:     &l1txs[i].FromIdx,
 695			ToIdx:       l1txs[i].ToIdx,
 696			Amount:      l1txs[i].Amount,
 697			AmountFloat: amountFloat,
 698			TokenID:     l1txs[i].TokenID,
 699			BatchNum:    l1txs[i].BatchNum,
 700			EthBlockNum: l1txs[i].EthBlockNum,
 701			// L1
 702			ToForgeL1TxsNum: l1txs[i].ToForgeL1TxsNum,
 703			UserOrigin:      &l1txs[i].UserOrigin,
 704			FromEthAddr:     &l1txs[i].FromEthAddr,
 705			FromBJJ:         l1txs[i].FromBJJ,
 706			LoadAmount:      l1txs[i].LoadAmount,
 707			LoadAmountFloat: &loadAmountFloat,
 708		})
 709	}
 710	return hdb.addTxs(d, txs)
 711}
 712
 713// AddL2Txs inserts L2 txs to the DB. TokenID, USD and FeeUSD will be set automatically before storing the tx.
 714func (hdb *HistoryDB) AddL2Txs(l2txs []common.L2Tx) error { return hdb.addL2Txs(hdb.db, l2txs) }
 715
 716// addL2Txs inserts L2 txs to the DB. TokenID, USD and FeeUSD will be set automatically before storing the tx.
 717func (hdb *HistoryDB) addL2Txs(d meddler.DB, l2txs []common.L2Tx) error {
 718	txs := []txWrite{}
 719	for i := 0; i < len(l2txs); i++ {
 720		f := new(big.Float).SetInt(l2txs[i].Amount)
 721		amountFloat, _ := f.Float64()
 722		txs = append(txs, txWrite{
 723			// Generic
 724			IsL1:        false,
 725			TxID:        l2txs[i].TxID,
 726			Type:        l2txs[i].Type,
 727			Position:    l2txs[i].Position,
 728			FromIdx:     &l2txs[i].FromIdx,
 729			ToIdx:       l2txs[i].ToIdx,
 730			Amount:      l2txs[i].Amount,
 731			AmountFloat: amountFloat,
 732			BatchNum:    &l2txs[i].BatchNum,
 733			EthBlockNum: l2txs[i].EthBlockNum,
 734			// L2
 735			Fee:   &l2txs[i].Fee,
 736			Nonce: &l2txs[i].Nonce,
 737		})
 738	}
 739	return hdb.addTxs(d, txs)
 740}
 741
 742func (hdb *HistoryDB) addTxs(d meddler.DB, txs []txWrite) error {
 743	return db.BulkInsert(
 744		d,
 745		`INSERT INTO tx (
 746			is_l1,
 747			id,
 748			type,
 749			position,
 750			from_idx,
 751			to_idx,
 752			amount,
 753			amount_f,
 754			token_id,
 755			batch_num,
 756			eth_block_num,
 757			to_forge_l1_txs_num,
 758			user_origin,
 759			from_eth_addr,
 760			from_bjj,
 761			load_amount,
 762			load_amount_f,
 763			fee,
 764			nonce
 765		) VALUES %s;`,
 766		txs[:],
 767	)
 768}
 769
 770// // GetTxs returns a list of txs from the DB
 771// func (hdb *HistoryDB) GetTxs() ([]common.Tx, error) {
 772// 	var txs []*common.Tx
 773// 	err := meddler.QueryAll(
 774// 		hdb.db, &txs,
 775// 		`SELECT * FROM tx
 776// 		ORDER BY (batch_num, position) ASC`,
 777// 	)
 778// 	return db.SlicePtrsToSlice(txs).([]common.Tx), err
 779// }
 780
 781// GetHistoryTx returns a tx from the DB given a TxID
 782func (hdb *HistoryDB) GetHistoryTx(txID common.TxID) (*TxAPI, error) {
 783	tx := &TxAPI{}
 784	err := meddler.QueryRow(
 785		hdb.db, tx, `SELECT tx.item_id, tx.is_l1, tx.id, tx.type, tx.position, 
 786		hez_idx(tx.from_idx, token.symbol) AS from_idx, tx.from_eth_addr, tx.from_bjj,
 787		hez_idx(tx.to_idx, token.symbol) AS to_idx, tx.to_eth_addr, tx.to_bjj,
 788		tx.amount, tx.token_id, tx.amount_usd, 
 789		tx.batch_num, tx.eth_block_num, tx.to_forge_l1_txs_num, tx.user_origin, 
 790		tx.load_amount, tx.load_amount_usd, tx.fee, tx.fee_usd, tx.nonce,
 791		token.token_id, token.item_id AS token_item_id, token.eth_block_num AS token_block,
 792		token.eth_addr, token.name, token.symbol, token.decimals, token.usd,
 793		token.usd_update, block.timestamp
 794		FROM tx INNER JOIN token ON tx.token_id = token.token_id 
 795		INNER JOIN block ON tx.eth_block_num = block.eth_block_num 
 796		WHERE tx.id = $1;`, txID,
 797	)
 798	return tx, err
 799}
 800
 801// GetHistoryTxs returns a list of txs from the DB using the HistoryTx struct
 802// and pagination info
 803func (hdb *HistoryDB) GetHistoryTxs(
 804	ethAddr *ethCommon.Address, bjj *babyjub.PublicKey,
 805	tokenID *common.TokenID, idx *common.Idx, batchNum *uint, txType *common.TxType,
 806	fromItem, limit *uint, order string,
 807) ([]TxAPI, uint64, error) {
 808	if ethAddr != nil && bjj != nil {
 809		return nil, 0, errors.New("ethAddr and bjj are incompatible")
 810	}
 811	var query string
 812	var args []interface{}
 813	queryStr := `SELECT tx.item_id, tx.is_l1, tx.id, tx.type, tx.position, 
 814	hez_idx(tx.from_idx, token.symbol) AS from_idx, tx.from_eth_addr, tx.from_bjj,
 815	hez_idx(tx.to_idx, token.symbol) AS to_idx, tx.to_eth_addr, tx.to_bjj,
 816	tx.amount, tx.token_id, tx.amount_usd, 
 817	tx.batch_num, tx.eth_block_num, tx.to_forge_l1_txs_num, tx.user_origin, 
 818	tx.load_amount, tx.load_amount_usd, tx.fee, tx.fee_usd, tx.nonce,
 819	token.token_id, token.item_id AS token_item_id, token.eth_block_num AS token_block,
 820	token.eth_addr, token.name, token.symbol, token.decimals, token.usd,
 821	token.usd_update, block.timestamp, count(*) OVER() AS total_items 
 822	FROM tx INNER JOIN token ON tx.token_id = token.token_id 
 823	INNER JOIN block ON tx.eth_block_num = block.eth_block_num `
 824	// Apply filters
 825	nextIsAnd := false
 826	// ethAddr filter
 827	if ethAddr != nil {
 828		queryStr = `WITH acc AS 
 829		(select idx from account where eth_addr = ?) ` + queryStr
 830		queryStr += ", acc WHERE (tx.from_idx IN(acc.idx) OR tx.to_idx IN(acc.idx)) "
 831		nextIsAnd = true
 832		args = append(args, ethAddr)
 833	} else if bjj != nil { // bjj filter
 834		queryStr = `WITH acc AS 
 835		(select idx from account where bjj = ?) ` + queryStr
 836		queryStr += ", acc WHERE (tx.from_idx IN(acc.idx) OR tx.to_idx IN(acc.idx)) "
 837		nextIsAnd = true
 838		args = append(args, bjj)
 839	}
 840	// tokenID filter
 841	if tokenID != nil {
 842		if nextIsAnd {
 843			queryStr += "AND "
 844		} else {
 845			queryStr += "WHERE "
 846		}
 847		queryStr += "tx.token_id = ? "
 848		args = append(args, tokenID)
 849		nextIsAnd = true
 850	}
 851	// idx filter
 852	if idx != nil {
 853		if nextIsAnd {
 854			queryStr += "AND "
 855		} else {
 856			queryStr += "WHERE "
 857		}
 858		queryStr += "(tx.from_idx = ? OR tx.to_idx = ?) "
 859		args = append(args, idx, idx)
 860		nextIsAnd = true
 861	}
 862	// batchNum filter
 863	if batchNum != nil {
 864		if nextIsAnd {
 865			queryStr += "AND "
 866		} else {
 867			queryStr += "WHERE "
 868		}
 869		queryStr += "tx.batch_num = ? "
 870		args = append(args, batchNum)
 871		nextIsAnd = true
 872	}
 873	// txType filter
 874	if txType != nil {
 875		if nextIsAnd {
 876			queryStr += "AND "
 877		} else {
 878			queryStr += "WHERE "
 879		}
 880		queryStr += "tx.type = ? "
 881		args = append(args, txType)
 882		nextIsAnd = true
 883	}
 884	if fromItem != nil {
 885		if nextIsAnd {
 886			queryStr += "AND "
 887		} else {
 888			queryStr += "WHERE "
 889		}
 890		if order == OrderAsc {
 891			queryStr += "tx.item_id >= ? "
 892		} else {
 893			queryStr += "tx.item_id <= ? "
 894		}
 895		args = append(args, fromItem)
 896		nextIsAnd = true
 897	}
 898	if nextIsAnd {
 899		queryStr += "AND "
 900	} else {
 901		queryStr += "WHERE "
 902	}
 903	queryStr += "tx.batch_num IS NOT NULL "
 904
 905	// pagination
 906	queryStr += "ORDER BY tx.item_id "
 907	if order == OrderAsc {
 908		queryStr += " ASC "
 909	} else {
 910		queryStr += " DESC "
 911	}
 912	queryStr += fmt.Sprintf("LIMIT %d;", *limit)
 913	query = hdb.db.Rebind(queryStr)
 914	// log.Debug(query)
 915	txsPtrs := []*TxAPI{}
 916	if err := meddler.QueryAll(hdb.db, &txsPtrs, query, args...); err != nil {
 917		return nil, 0, err
 918	}
 919	txs := db.SlicePtrsToSlice(txsPtrs).([]TxAPI)
 920	if len(txs) == 0 {
 921		return nil, 0, sql.ErrNoRows
 922	}
 923	return txs, txs[0].TotalItems - uint64(len(txs)), nil
 924}
 925
 926// GetAllExits returns all exit from the DB
 927func (hdb *HistoryDB) GetAllExits() ([]common.ExitInfo, error) {
 928	var exits []*common.ExitInfo
 929	err := meddler.QueryAll(
 930		hdb.db, &exits,
 931		`SELECT exit_tree.batch_num, exit_tree.account_idx, exit_tree.merkle_proof,
 932		exit_tree.balance, exit_tree.instant_withdrawn, exit_tree.delayed_withdraw_request,
 933		exit_tree.delayed_withdrawn FROM exit_tree;`,
 934	)
 935	return db.SlicePtrsToSlice(exits).([]common.ExitInfo), err
 936}
 937
 938// GetExitAPI returns a exit from the DB
 939func (hdb *HistoryDB) GetExitAPI(batchNum *uint, idx *common.Idx) (*ExitAPI, error) {
 940	exit := &ExitAPI{}
 941	err := meddler.QueryRow(
 942		hdb.db, exit, `SELECT exit_tree.item_id, exit_tree.batch_num,
 943		hez_idx(exit_tree.account_idx, token.symbol) AS account_idx,
 944		exit_tree.merkle_proof, exit_tree.balance, exit_tree.instant_withdrawn,
 945		exit_tree.delayed_withdraw_request, exit_tree.delayed_withdrawn,
 946		token.token_id, token.item_id AS token_item_id, 
 947		token.eth_block_num AS token_block, token.eth_addr, token.name, token.symbol, 
 948		token.decimals, token.usd, token.usd_update
 949		FROM exit_tree INNER JOIN account ON exit_tree.account_idx = account.idx 
 950		INNER JOIN token ON account.token_id = token.token_id 
 951		WHERE exit_tree.batch_num = $1 AND exit_tree.account_idx = $2;`, batchNum, idx,
 952	)
 953	return exit, err
 954}
 955
 956// GetExitsAPI returns a list of exits from the DB and pagination info
 957func (hdb *HistoryDB) GetExitsAPI(
 958	ethAddr *ethCommon.Address, bjj *babyjub.PublicKey, tokenID *common.TokenID,
 959	idx *common.Idx, batchNum *uint, onlyPendingWithdraws *bool,
 960	fromItem, limit *uint, order string,
 961) ([]ExitAPI, uint64, error) {
 962	if ethAddr != nil && bjj != nil {
 963		return nil, 0, errors.New("ethAddr and bjj are incompatible")
 964	}
 965	var query string
 966	var args []interface{}
 967	queryStr := `SELECT exit_tree.item_id, exit_tree.batch_num,
 968	hez_idx(exit_tree.account_idx, token.symbol) AS account_idx,
 969	exit_tree.merkle_proof, exit_tree.balance, exit_tree.instant_withdrawn,
 970	exit_tree.delayed_withdraw_request, exit_tree.delayed_withdrawn,
 971	token.token_id, token.item_id AS token_item_id,
 972	token.eth_block_num AS token_block, token.eth_addr, token.name, token.symbol,
 973	token.decimals, token.usd, token.usd_update, COUNT(*) OVER() AS total_items
 974	FROM exit_tree INNER JOIN account ON exit_tree.account_idx = account.idx 
 975	INNER JOIN token ON account.token_id = token.token_id `
 976	// Apply filters
 977	nextIsAnd := false
 978	// ethAddr filter
 979	if ethAddr != nil {
 980		queryStr += "WHERE account.eth_addr = ? "
 981		nextIsAnd = true
 982		args = append(args, ethAddr)
 983	} else if bjj != nil { // bjj filter
 984		queryStr += "WHERE account.bjj = ? "
 985		nextIsAnd = true
 986		args = append(args, bjj)
 987	}
 988	// tokenID filter
 989	if tokenID != nil {
 990		if nextIsAnd {
 991			queryStr += "AND "
 992		} else {
 993			queryStr += "WHERE "
 994		}
 995		queryStr += "account.token_id = ? "
 996		args = append(args, tokenID)
 997		nextIsAnd = true
 998	}
 999	// idx filter
1000	if idx != nil {
1001		if nextIsAnd {
1002			queryStr += "AND "
1003		} else {
1004			queryStr += "WHERE "
1005		}
1006		queryStr += "exit_tree.account_idx = ? "
1007		args = append(args, idx)
1008		nextIsAnd = true
1009	}
1010	// batchNum filter
1011	if batchNum != nil {
1012		if nextIsAnd {
1013			queryStr += "AND "
1014		} else {
1015			queryStr += "WHERE "
1016		}
1017		queryStr += "exit_tree.batch_num = ? "
1018		args = append(args, batchNum)
1019		nextIsAnd = true
1020	}
1021	// onlyPendingWithdraws
1022	if onlyPendingWithdraws != nil {
1023		if *onlyPendingWithdraws {
1024			if nextIsAnd {
1025				queryStr += "AND "
1026			} else {
1027				queryStr += "WHERE "
1028			}
1029			queryStr += "(exit_tree.instant_withdrawn IS NULL AND exit_tree.delayed_withdrawn IS NULL) "
1030			nextIsAnd = true
1031		}
1032	}
1033	if fromItem != nil {
1034		if nextIsAnd {
1035			queryStr += "AND "
1036		} else {
1037			queryStr += "WHERE "
1038		}
1039		if order == OrderAsc {
1040			queryStr += "exit_tree.item_id >= ? "
1041		} else {
1042			queryStr += "exit_tree.item_id <= ? "
1043		}
1044		args = append(args, fromItem)
1045		// nextIsAnd = true
1046	}
1047	// pagination
1048	queryStr += "ORDER BY exit_tree.item_id "
1049	if order == OrderAsc {
1050		queryStr += " ASC "
1051	} else {
1052		queryStr += " DESC "
1053	}
1054	queryStr += fmt.Sprintf("LIMIT %d;", *limit)
1055	query = hdb.db.Rebind(queryStr)
1056	// log.Debug(query)
1057	exits := []*ExitAPI{}
1058	if err := meddler.QueryAll(hdb.db, &exits, query, args...); err != nil {
1059		return nil, 0, err
1060	}
1061	if len(exits) == 0 {
1062		return nil, 0, sql.ErrNoRows
1063	}
1064	return db.SlicePtrsToSlice(exits).([]ExitAPI), exits[0].TotalItems - uint64(len(exits)), nil
1065}
1066
1067// // GetTx returns a tx from the DB
1068// func (hdb *HistoryDB) GetTx(txID common.TxID) (*common.Tx, error) {
1069// 	tx := new(common.Tx)
1070// 	return tx, meddler.QueryRow(
1071// 		hdb.db, tx,
1072// 		"SELECT * FROM tx WHERE id = $1;",
1073// 		txID,
1074// 	)
1075// }
1076
1077// GetAllL1UserTxs returns all L1UserTxs from the DB
1078func (hdb *HistoryDB) GetAllL1UserTxs() ([]common.L1Tx, error) {
1079	var txs []*common.L1Tx
1080	err := meddler.QueryAll(
1081		hdb.db, &txs,
1082		`SELECT tx.id, tx.to_forge_l1_txs_num, tx.position, tx.user_origin,
1083		tx.from_idx, tx.from_eth_addr, tx.from_bjj, tx.to_idx, tx.token_id, tx.amount,
1084		tx.load_amount, tx.eth_block_num, tx.type, tx.batch_num
1085		FROM tx WHERE is_l1 = TRUE AND user_origin = TRUE;`,
1086	)
1087	return db.SlicePtrsToSlice(txs).([]common.L1Tx), err
1088}
1089
1090// GetAllL1CoordinatorTxs returns all L1CoordinatorTxs from the DB
1091func (hdb *HistoryDB) GetAllL1CoordinatorTxs() ([]common.L1Tx, error) {
1092	var txs []*common.L1Tx
1093	err := meddler.QueryAll(
1094		hdb.db, &txs,
1095		`SELECT tx.id, tx.to_forge_l1_txs_num, tx.position, tx.user_origin,
1096		tx.from_idx, tx.from_eth_addr, tx.from_bjj, tx.to_idx, tx.token_id, tx.amount,
1097		tx.load_amount, tx.eth_block_num, tx.type, tx.batch_num
1098		FROM tx WHERE is_l1 = TRUE AND user_origin = FALSE;`,
1099	)
1100	return db.SlicePtrsToSlice(txs).([]common.L1Tx), err
1101}
1102
1103// GetAllL2Txs returns all L2Txs from the DB
1104func (hdb *HistoryDB) GetAllL2Txs() ([]common.L2Tx, error) {
1105	var txs []*common.L2Tx
1106	err := meddler.QueryAll(
1107		hdb.db, &txs,
1108		`SELECT tx.id, tx.batch_num, tx.position,
1109		tx.from_idx, tx.to_idx, tx.amount, tx.fee, tx.nonce,
1110		tx.type, tx.eth_block_num
1111		FROM tx WHERE is_l1 = FALSE;`,
1112	)
1113	return db.SlicePtrsToSlice(txs).([]common.L2Tx), err
1114}
1115
1116// GetL1UserTxs gets L1 User Txs to be forged in the L1Batch with toForgeL1TxsNum.
1117func (hdb *HistoryDB) GetL1UserTxs(toForgeL1TxsNum int64) ([]common.L1Tx, error) {
1118	var txs []*common.L1Tx
1119	err := meddler.QueryAll(
1120		hdb.db, &txs,
1121		`SELECT tx.id, tx.to_forge_l1_txs_num, tx.position, tx.user_origin,
1122		tx.from_idx, tx.from_eth_addr, tx.from_bjj, tx.to_idx, tx.token_id, tx.amount,
1123		tx.load_amount, tx.eth_block_num, tx.type, tx.batch_num
1124		FROM tx WHERE to_forge_l1_txs_num = $1 AND is_l1 = TRUE AND user_origin = TRUE;`,
1125		toForgeL1TxsNum,
1126	)
1127	return db.SlicePtrsToSlice(txs).([]common.L1Tx), err
1128}
1129
1130// TODO: Think about chaning all the queries that return a last value, to queries that return the next valid value.
1131
1132// GetLastTxsPosition for a given to_forge_l1_txs_num
1133func (hdb *HistoryDB) GetLastTxsPosition(toForgeL1TxsNum int64) (int, error) {
1134	row := hdb.db.QueryRow("SELECT MAX(position) FROM tx WHERE to_forge_l1_txs_num = $1;", toForgeL1TxsNum)
1135	var lastL1TxsPosition int
1136	return lastL1TxsPosition, row.Scan(&lastL1TxsPosition)
1137}
1138
1139// GetSCVars returns the rollup, auction and wdelayer smart contracts variables at their last update.
1140func (hdb *HistoryDB) GetSCVars() (*common.RollupVariables, *common.AuctionVariables,
1141	*common.WDelayerVariables, error) {
1142	var rollup common.RollupVariables
1143	var auction common.AuctionVariables
1144	var wDelayer common.WDelayerVariables
1145	if err := meddler.QueryRow(hdb.db, &rollup,
1146		"SELECT * FROM rollup_vars ORDER BY eth_block_num DESC LIMIT 1;"); err != nil {
1147		return nil, nil, nil, err
1148	}
1149	if err := meddler.QueryRow(hdb.db, &auction,
1150		"SELECT * FROM auction_vars ORDER BY eth_block_num DESC LIMIT 1;"); err != nil {
1151		return nil, nil, nil, err
1152	}
1153	if err := meddler.QueryRow(hdb.db, &wDelayer,
1154		"SELECT * FROM wdelayer_vars ORDER BY eth_block_num DESC LIMIT 1;"); err != nil {
1155		return nil, nil, nil, err
1156	}
1157	return &rollup, &auction, &wDelayer, nil
1158}
1159
1160func (hdb *HistoryDB) setRollupVars(d meddler.DB, rollup *common.RollupVariables) error {
1161	return meddler.Insert(d, "rollup_vars", rollup)
1162}
1163
1164func (hdb *HistoryDB) setAuctionVars(d meddler.DB, auction *common.AuctionVariables) error {
1165	return meddler.Insert(d, "auction_vars", auction)
1166}
1167
1168func (hdb *HistoryDB) setWDelayerVars(d meddler.DB, wDelayer *common.WDelayerVariables) error {
1169	return meddler.Insert(d, "wdelayer_vars", wDelayer)
1170}
1171
1172// SetInitialSCVars sets the initial state of rollup, auction, wdelayer smart
1173// contract variables.  This initial state is stored linked to block 0, which
1174// always exist in the DB and is used to store initialization data that always
1175// exist in the smart contracts.
1176func (hdb *HistoryDB) SetInitialSCVars(rollup *common.RollupVariables,
1177	auction *common.AuctionVariables, wDelayer *common.WDelayerVariables) error {
1178	txn, err := hdb.db.Begin()
1179	if err != nil {
1180		return err
1181	}
1182	defer func() {
1183		if err != nil {
1184			db.Rollback(txn)
1185		}
1186	}()
1187	// Force EthBlockNum to be 0 because it's the block used to link data
1188	// that belongs to the creation of the smart contracts
1189	rollup.EthBlockNum = 0
1190	auction.EthBlockNum = 0
1191	wDelayer.EthBlockNum = 0
1192	if err := hdb.setRollupVars(txn, rollup); err != nil {
1193		return err
1194	}
1195	if err := hdb.setAuctionVars(txn, auction); err != nil {
1196		return err
1197	}
1198	if err := hdb.setWDelayerVars(txn, wDelayer); err != nil {
1199		return err
1200	}
1201
1202	return txn.Commit()
1203}
1204
1205// AddBlockSCData stores all the information of a block retrieved by the
1206// Synchronizer.  Blocks should be inserted in order, leaving no gaps because
1207// the pagination system of the API/DB depends on this.  Within blocks, all
1208// items should also be in the correct order (Accounts, Tokens, Txs, etc.)
1209func (hdb *HistoryDB) AddBlockSCData(blockData *common.BlockData) (err error) {
1210	txn, err := hdb.db.Begin()
1211	if err != nil {
1212		return err
1213	}
1214	defer func() {
1215		if err != nil {
1216			db.Rollback(txn)
1217		}
1218	}()
1219
1220	// Add block
1221	if err := hdb.addBlock(txn, &blockData.Block); err != nil {
1222		return err
1223	}
1224
1225	// Add Coordinators
1226	if len(blockData.Auction.Coordinators) > 0 {
1227		if err := hdb.addCoordinators(txn, blockData.Auction.Coordinators); err != nil {
1228			return err
1229		}
1230	}
1231
1232	// Add Bids
1233	if len(blockData.Auction.Bids) > 0 {
1234		if err := hdb.addBids(txn, blockData.Auction.Bids); err != nil {
1235			return err
1236		}
1237	}
1238
1239	// Add Tokens
1240	if len(blockData.Rollup.AddedTokens) > 0 {
1241		if err := hdb.addTokens(txn, blockData.Rollup.AddedTokens); err != nil {
1242			return err
1243		}
1244	}
1245
1246	// Add l1 Txs
1247	if len(blockData.Rollup.L1UserTxs) > 0 {
1248		if err := hdb.addL1Txs(txn, blockData.Rollup.L1UserTxs); err != nil {
1249			return err
1250		}
1251	}
1252
1253	// Add Batches
1254	for i := range blockData.Rollup.Batches {
1255		batch := &blockData.Rollup.Batches[i]
1256		// Add Batch: this will trigger an update on the DB
1257		// that will set the batch num of forged L1 txs in this batch
1258		if err = hdb.addBatch(txn, &batch.Batch); err != nil {
1259			return err
1260		}
1261
1262		// Add unforged l1 Txs
1263		if batch.L1Batch {
1264			if len(batch.L1CoordinatorTxs) > 0 {
1265				if err := hdb.addL1Txs(txn, batch.L1CoordinatorTxs); err != nil {
1266					return err
1267				}
1268			}
1269		}
1270
1271		// Add l2 Txs
1272		if len(batch.L2Txs) > 0 {
1273			if err := hdb.addL2Txs(txn, batch.L2Txs); err != nil {
1274				return err
1275			}
1276		}
1277
1278		// Add accounts
1279		if len(batch.CreatedAccounts) > 0 {
1280			if err := hdb.addAccounts(txn, batch.CreatedAccounts); err != nil {
1281				return err
1282			}
1283		}
1284
1285		// Add exit tree
1286		if len(batch.ExitTree) > 0 {
1287			if err := hdb.addExitTree(txn, batch.ExitTree); err != nil {
1288				return err
1289			}
1290		}
1291	}
1292	if blockData.Rollup.Vars != nil {
1293		if err := hdb.setRollupVars(txn, blockData.Rollup.Vars); err != nil {
1294			return err
1295		}
1296	}
1297	if blockData.Auction.Vars != nil {
1298		if err := hdb.setAuctionVars(txn, blockData.Auction.Vars); err != nil {
1299			return err
1300		}
1301	}
1302	if blockData.WDelayer.Vars != nil {
1303		if err := hdb.setWDelayerVars(txn, blockData.WDelayer.Vars); err != nil {
1304			return err
1305		}
1306	}
1307
1308	// TODO: Process withdrawals
1309
1310	return txn.Commit()
1311}
1312
1313// GetCoordinatorAPI returns a coordinator by its bidderAddr
1314func (hdb *HistoryDB) GetCoordinatorAPI(bidderAddr ethCommon.Address) (*CoordinatorAPI, error) {
1315	coordinator := &CoordinatorAPI{}
1316	err := meddler.QueryRow(hdb.db, coordinator, "SELECT * FROM coordinator WHERE bidder_addr = $1;", bidderAddr)
1317	return coordinator, err
1318}
1319
1320// GetCoordinatorsAPI returns a list of coordinators from the DB and pagination info
1321func (hdb *HistoryDB) GetCoordinatorsAPI(fromItem, limit *uint, order string) ([]CoordinatorAPI, uint64, error) {
1322	var query string
1323	var args []interface{}
1324	queryStr := `SELECT coordinator.*, 
1325	COUNT(*) OVER() AS total_items
1326	FROM coordinator `
1327	// Apply filters
1328	if fromItem != nil {
1329		queryStr += "WHERE "
1330		if order == OrderAsc {
1331			queryStr += "coordinator.item_id >= ? "
1332		} else {
1333			queryStr += "coordinator.item_id <= ? "
1334		}
1335		args = append(args, fromItem)
1336	}
1337	// pagination
1338	queryStr += "ORDER BY coordinator.item_id "
1339	if order == OrderAsc {
1340		queryStr += " ASC "
1341	} else {
1342		queryStr += " DESC "
1343	}
1344	queryStr += fmt.Sprintf("LIMIT %d;", *limit)
1345	query = hdb.db.Rebind(queryStr)
1346
1347	coordinators := []*CoordinatorAPI{}
1348	if err := meddler.QueryAll(hdb.db, &coordinators, query, args...); err != nil {
1349		return nil, 0, err
1350	}
1351	if len(coordinators) == 0 {
1352		return nil, 0, sql.ErrNoRows
1353	}
1354	return db.SlicePtrsToSlice(coordinators).([]CoordinatorAPI),
1355		coordinators[0].TotalItems - uint64(len(coordinators)), nil
1356}
1357
1358// AddAuctionVars insert auction vars into the DB
1359func (hdb *HistoryDB) AddAuctionVars(auctionVars *common.AuctionVariables) error {
1360	return meddler.Insert(hdb.db, "auction_vars", auctionVars)
1361}
1362
1363// GetAuctionVars returns auction variables
1364func (hdb *HistoryDB) GetAuctionVars() (*common.AuctionVariables, error) {
1365	auctionVars := &common.AuctionVariables{}
1366	err := meddler.QueryRow(
1367		hdb.db, auctionVars, `SELECT * FROM auction_vars;`,
1368	)
1369	return auctionVars, err
1370}
1371
1372// GetAccountAPI returns an account by its index
1373func (hdb *HistoryDB) GetAccountAPI(idx common.Idx) (*AccountAPI, error) {
1374	account := &AccountAPI{}
1375	err := meddler.QueryRow(hdb.db, account, `SELECT account.item_id, hez_idx(account.idx, 
1376	token.symbol) as idx, account.batch_num, account.bjj, account.eth_addr,
1377	token.token_id, token.item_id AS token_item_id, token.eth_block_num AS token_block,
1378	token.eth_addr as token_eth_addr, token.name, token.symbol, token.decimals, token.usd, token.usd_update 
1379	FROM account INNER JOIN token ON account.token_id = token.token_id WHERE idx = $1;`, idx)
1380
1381	if err != nil {
1382		return nil, err
1383	}
1384
1385	return account, nil
1386}
1387
1388// GetAccountsAPI returns a list of accounts from the DB and pagination info
1389func (hdb *HistoryDB) GetAccountsAPI(
1390	tokenIDs []common.TokenID, ethAddr *ethCommon.Address,
1391	bjj *babyjub.PublicKey, fromItem, limit *uint, order string,
1392) ([]AccountAPI, uint64, error) {
1393	if ethAddr != nil && bjj != nil {
1394		return nil, 0, errors.New("ethAddr and bjj are incompatible")
1395	}
1396	var query string
1397	var args []interface{}
1398	queryStr := `SELECT account.item_id, hez_idx(account.idx, token.symbol) as idx, account.batch_num, 
1399	account.bjj, account.eth_addr, token.token_id, token.item_id AS token_item_id, token.eth_block_num AS token_block,
1400	token.eth_addr as token_eth_addr, token.name, token.symbol, token.decimals, token.usd, token.usd_update, 
1401	COUNT(*) OVER() AS total_items
1402	FROM account INNER JOIN token ON account.token_id = token.token_id `
1403	// Apply filters
1404	nextIsAnd := false
1405	// ethAddr filter
1406	if ethAddr != nil {
1407		queryStr += "WHERE account.eth_addr = ? "
1408		nextIsAnd = true
1409		args = append(args, ethAddr)
1410	} else if bjj != nil { // bjj filter
1411		queryStr += "WHERE account.bjj = ? "
1412		nextIsAnd = true
1413		args = append(args, bjj)
1414	}
1415	// tokenID filter
1416	if len(tokenIDs) > 0 {
1417		if nextIsAnd {
1418			queryStr += "AND "
1419		} else {
1420			queryStr += "WHERE "
1421		}
1422		queryStr += "account.token_id IN (?) "
1423		args = append(args, tokenIDs)
1424		nextIsAnd = true
1425	}
1426	if fromItem != nil {
1427		if nextIsAnd {
1428			queryStr += "AND "
1429		} else {
1430			queryStr += "WHERE "
1431		}
1432		if order == OrderAsc {
1433			queryStr += "account.item_id >= ? "
1434		} else {
1435			queryStr += "account.item_id <= ? "
1436		}
1437		args = append(args, fromItem)
1438	}
1439	// pagination
1440	queryStr += "ORDER BY account.item_id "
1441	if order == OrderAsc {
1442		queryStr += " ASC "
1443	} else {
1444		queryStr += " DESC "
1445	}
1446	queryStr += fmt.Sprintf("LIMIT %d;", *limit)
1447	query, argsQ, err := sqlx.In(queryStr, args...)
1448	if err != nil {
1449		return nil, 0, err
1450	}
1451	query = hdb.db.Rebind(query)
1452
1453	accounts := []*AccountAPI{}
1454	if err := meddler.QueryAll(hdb.db, &accounts, query, argsQ...); err != nil {
1455		return nil, 0, err
1456	}
1457	if len(accounts) == 0 {
1458		return nil, 0, sql.ErrNoRows
1459	}
1460
1461	return db.SlicePtrsToSlice(accounts).([]AccountAPI),
1462		accounts[0].TotalItems - uint64(len(accounts)), nil
1463}
1464
1465// GetMetrics returns metrics
1466func (hdb *HistoryDB) GetMetrics() (Metrics, error) {
1467	metrics := Metrics{}
1468	return metrics, nil
1469}