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
 506type exitID struct {
 507	batchNum int64
 508	idx      int64
 509}
 510
 511func (hdb *HistoryDB) updateExitTree(d meddler.DB, blockNum int64,
 512	instantWithdrawn []exitID, delayedWithdrawRequest []exitID) error {
 513	// helperQueryExitIDTuples is a helper function to build the query with
 514	// an array of tuples in the arguments side built from []exitID
 515	helperQueryExitIDTuples := func(queryTmpl string, blockNum int64, exits []exitID) (string, []interface{}) {
 516		args := make([]interface{}, len(exits)*2+1)
 517		holder := ""
 518		args[0] = blockNum
 519		for i, v := range exits {
 520			args[1+i*2+0] = v.batchNum
 521			args[1+i*2+1] = v.idx
 522			holder += "(?, ?),"
 523		}
 524		query := fmt.Sprintf(queryTmpl, holder[:len(holder)-1])
 525		return hdb.db.Rebind(query), args
 526	}
 527
 528	if len(instantWithdrawn) > 0 {
 529		query, args := helperQueryExitIDTuples(
 530			`UPDATE exit_tree SET instant_withdrawn = ? WHERE (batch_num, account_idx) IN (%s);`,
 531			blockNum,
 532			instantWithdrawn,
 533		)
 534		if _, err := hdb.db.DB.Exec(query, args...); err != nil {
 535			return err
 536		}
 537	}
 538	if len(delayedWithdrawRequest) > 0 {
 539		query, args := helperQueryExitIDTuples(
 540			`UPDATE exit_tree SET delayed_withdraw_request = ? WHERE (batch_num, account_idx) IN (%s);`,
 541			blockNum,
 542			delayedWithdrawRequest,
 543		)
 544		if _, err := hdb.db.DB.Exec(query, args...); err != nil {
 545			return err
 546		}
 547	}
 548	return nil
 549}
 550
 551// AddToken insert a token into the DB
 552func (hdb *HistoryDB) AddToken(token *common.Token) error {
 553	return meddler.Insert(hdb.db, "token", token)
 554}
 555
 556// AddTokens insert tokens into the DB
 557func (hdb *HistoryDB) AddTokens(tokens []common.Token) error { return hdb.addTokens(hdb.db, tokens) }
 558func (hdb *HistoryDB) addTokens(d meddler.DB, tokens []common.Token) error {
 559	return db.BulkInsert(
 560		d,
 561		`INSERT INTO token (
 562			token_id,
 563			eth_block_num,
 564			eth_addr,
 565			name,
 566			symbol,
 567			decimals
 568		) VALUES %s;`,
 569		tokens[:],
 570	)
 571}
 572
 573// UpdateTokenValue updates the USD value of a token
 574func (hdb *HistoryDB) UpdateTokenValue(tokenSymbol string, value float64) error {
 575	_, err := hdb.db.Exec(
 576		"UPDATE token SET usd = $1 WHERE symbol = $2;",
 577		value, tokenSymbol,
 578	)
 579	return err
 580}
 581
 582// GetToken returns a token from the DB given a TokenID
 583func (hdb *HistoryDB) GetToken(tokenID common.TokenID) (*TokenWithUSD, error) {
 584	token := &TokenWithUSD{}
 585	err := meddler.QueryRow(
 586		hdb.db, token, `SELECT * FROM token WHERE token_id = $1;`, tokenID,
 587	)
 588	return token, err
 589}
 590
 591// GetAllTokens returns all tokens from the DB
 592func (hdb *HistoryDB) GetAllTokens() ([]TokenWithUSD, error) {
 593	var tokens []*TokenWithUSD
 594	err := meddler.QueryAll(
 595		hdb.db, &tokens,
 596		"SELECT * FROM token ORDER BY token_id;",
 597	)
 598	return db.SlicePtrsToSlice(tokens).([]TokenWithUSD), err
 599}
 600
 601// GetTokens returns a list of tokens from the DB
 602func (hdb *HistoryDB) GetTokens(
 603	ids []common.TokenID, symbols []string, name string, fromItem,
 604	limit *uint, order string,
 605) ([]TokenWithUSD, uint64, error) {
 606	var query string
 607	var args []interface{}
 608	queryStr := `SELECT * , COUNT(*) OVER() AS total_items FROM token `
 609	// Apply filters
 610	nextIsAnd := false
 611	if len(ids) > 0 {
 612		queryStr += "WHERE token_id IN (?) "
 613		nextIsAnd = true
 614		args = append(args, ids)
 615	}
 616	if len(symbols) > 0 {
 617		if nextIsAnd {
 618			queryStr += "AND "
 619		} else {
 620			queryStr += "WHERE "
 621		}
 622		queryStr += "symbol IN (?) "
 623		args = append(args, symbols)
 624		nextIsAnd = true
 625	}
 626	if name != "" {
 627		if nextIsAnd {
 628			queryStr += "AND "
 629		} else {
 630			queryStr += "WHERE "
 631		}
 632		queryStr += "name ~ ? "
 633		args = append(args, name)
 634		nextIsAnd = true
 635	}
 636	if fromItem != nil {
 637		if nextIsAnd {
 638			queryStr += "AND "
 639		} else {
 640			queryStr += "WHERE "
 641		}
 642		if order == OrderAsc {
 643			queryStr += "item_id >= ? "
 644		} else {
 645			queryStr += "item_id <= ? "
 646		}
 647		args = append(args, fromItem)
 648	}
 649	// pagination
 650	queryStr += "ORDER BY item_id "
 651	if order == OrderAsc {
 652		queryStr += "ASC "
 653	} else {
 654		queryStr += "DESC "
 655	}
 656	queryStr += fmt.Sprintf("LIMIT %d;", *limit)
 657	query, argsQ, err := sqlx.In(queryStr, args...)
 658	if err != nil {
 659		return nil, 0, err
 660	}
 661	query = hdb.db.Rebind(query)
 662	tokens := []*TokenWithUSD{}
 663	if err := meddler.QueryAll(hdb.db, &tokens, query, argsQ...); err != nil {
 664		return nil, 0, err
 665	}
 666	if len(tokens) == 0 {
 667		return nil, 0, sql.ErrNoRows
 668	}
 669	return db.SlicePtrsToSlice(tokens).([]TokenWithUSD), uint64(len(tokens)) - tokens[0].TotalItems, nil
 670}
 671
 672// GetTokenSymbols returns all the token symbols from the DB
 673func (hdb *HistoryDB) GetTokenSymbols() ([]string, error) {
 674	var tokenSymbols []string
 675	rows, err := hdb.db.Query("SELECT symbol FROM token;")
 676	if err != nil {
 677		return nil, err
 678	}
 679	sym := new(string)
 680	for rows.Next() {
 681		err = rows.Scan(sym)
 682		if err != nil {
 683			return nil, err
 684		}
 685		tokenSymbols = append(tokenSymbols, *sym)
 686	}
 687	return tokenSymbols, nil
 688}
 689
 690// AddAccounts insert accounts into the DB
 691func (hdb *HistoryDB) AddAccounts(accounts []common.Account) error {
 692	return hdb.addAccounts(hdb.db, accounts)
 693}
 694func (hdb *HistoryDB) addAccounts(d meddler.DB, accounts []common.Account) error {
 695	return db.BulkInsert(
 696		d,
 697		`INSERT INTO account (
 698			idx,
 699			token_id,
 700			batch_num,
 701			bjj,
 702			eth_addr
 703		) VALUES %s;`,
 704		accounts[:],
 705	)
 706}
 707
 708// GetAccounts returns a list of accounts from the DB
 709func (hdb *HistoryDB) GetAccounts() ([]common.Account, error) {
 710	var accs []*common.Account
 711	err := meddler.QueryAll(
 712		hdb.db, &accs,
 713		"SELECT * FROM account ORDER BY idx;",
 714	)
 715	return db.SlicePtrsToSlice(accs).([]common.Account), err
 716}
 717
 718// AddL1Txs inserts L1 txs to the DB. USD and LoadAmountUSD will be set automatically before storing the tx.
 719// If the tx is originated by a coordinator, BatchNum must be provided. If it's originated by a user,
 720// BatchNum should be null, and the value will be setted by a trigger when a batch forges the tx.
 721func (hdb *HistoryDB) AddL1Txs(l1txs []common.L1Tx) error { return hdb.addL1Txs(hdb.db, l1txs) }
 722
 723// addL1Txs inserts L1 txs to the DB. USD and LoadAmountUSD will be set automatically before storing the tx.
 724// If the tx is originated by a coordinator, BatchNum must be provided. If it's originated by a user,
 725// BatchNum should be null, and the value will be setted by a trigger when a batch forges the tx.
 726func (hdb *HistoryDB) addL1Txs(d meddler.DB, l1txs []common.L1Tx) error {
 727	txs := []txWrite{}
 728	for i := 0; i < len(l1txs); i++ {
 729		af := new(big.Float).SetInt(l1txs[i].Amount)
 730		amountFloat, _ := af.Float64()
 731		laf := new(big.Float).SetInt(l1txs[i].LoadAmount)
 732		loadAmountFloat, _ := laf.Float64()
 733		txs = append(txs, txWrite{
 734			// Generic
 735			IsL1:        true,
 736			TxID:        l1txs[i].TxID,
 737			Type:        l1txs[i].Type,
 738			Position:    l1txs[i].Position,
 739			FromIdx:     &l1txs[i].FromIdx,
 740			ToIdx:       l1txs[i].ToIdx,
 741			Amount:      l1txs[i].Amount,
 742			AmountFloat: amountFloat,
 743			TokenID:     l1txs[i].TokenID,
 744			BatchNum:    l1txs[i].BatchNum,
 745			EthBlockNum: l1txs[i].EthBlockNum,
 746			// L1
 747			ToForgeL1TxsNum: l1txs[i].ToForgeL1TxsNum,
 748			UserOrigin:      &l1txs[i].UserOrigin,
 749			FromEthAddr:     &l1txs[i].FromEthAddr,
 750			FromBJJ:         l1txs[i].FromBJJ,
 751			LoadAmount:      l1txs[i].LoadAmount,
 752			LoadAmountFloat: &loadAmountFloat,
 753		})
 754	}
 755	return hdb.addTxs(d, txs)
 756}
 757
 758// AddL2Txs inserts L2 txs to the DB. TokenID, USD and FeeUSD will be set automatically before storing the tx.
 759func (hdb *HistoryDB) AddL2Txs(l2txs []common.L2Tx) error { return hdb.addL2Txs(hdb.db, l2txs) }
 760
 761// addL2Txs inserts L2 txs to the DB. TokenID, USD and FeeUSD will be set automatically before storing the tx.
 762func (hdb *HistoryDB) addL2Txs(d meddler.DB, l2txs []common.L2Tx) error {
 763	txs := []txWrite{}
 764	for i := 0; i < len(l2txs); i++ {
 765		f := new(big.Float).SetInt(l2txs[i].Amount)
 766		amountFloat, _ := f.Float64()
 767		txs = append(txs, txWrite{
 768			// Generic
 769			IsL1:        false,
 770			TxID:        l2txs[i].TxID,
 771			Type:        l2txs[i].Type,
 772			Position:    l2txs[i].Position,
 773			FromIdx:     &l2txs[i].FromIdx,
 774			ToIdx:       l2txs[i].ToIdx,
 775			Amount:      l2txs[i].Amount,
 776			AmountFloat: amountFloat,
 777			BatchNum:    &l2txs[i].BatchNum,
 778			EthBlockNum: l2txs[i].EthBlockNum,
 779			// L2
 780			Fee:   &l2txs[i].Fee,
 781			Nonce: &l2txs[i].Nonce,
 782		})
 783	}
 784	return hdb.addTxs(d, txs)
 785}
 786
 787func (hdb *HistoryDB) addTxs(d meddler.DB, txs []txWrite) error {
 788	return db.BulkInsert(
 789		d,
 790		`INSERT INTO tx (
 791			is_l1,
 792			id,
 793			type,
 794			position,
 795			from_idx,
 796			to_idx,
 797			amount,
 798			amount_f,
 799			token_id,
 800			batch_num,
 801			eth_block_num,
 802			to_forge_l1_txs_num,
 803			user_origin,
 804			from_eth_addr,
 805			from_bjj,
 806			load_amount,
 807			load_amount_f,
 808			fee,
 809			nonce
 810		) VALUES %s;`,
 811		txs[:],
 812	)
 813}
 814
 815// // GetTxs returns a list of txs from the DB
 816// func (hdb *HistoryDB) GetTxs() ([]common.Tx, error) {
 817// 	var txs []*common.Tx
 818// 	err := meddler.QueryAll(
 819// 		hdb.db, &txs,
 820// 		`SELECT * FROM tx
 821// 		ORDER BY (batch_num, position) ASC`,
 822// 	)
 823// 	return db.SlicePtrsToSlice(txs).([]common.Tx), err
 824// }
 825
 826// GetHistoryTx returns a tx from the DB given a TxID
 827func (hdb *HistoryDB) GetHistoryTx(txID common.TxID) (*TxAPI, error) {
 828	tx := &TxAPI{}
 829	err := meddler.QueryRow(
 830		hdb.db, tx, `SELECT tx.item_id, tx.is_l1, tx.id, tx.type, tx.position, 
 831		hez_idx(tx.from_idx, token.symbol) AS from_idx, tx.from_eth_addr, tx.from_bjj,
 832		hez_idx(tx.to_idx, token.symbol) AS to_idx, tx.to_eth_addr, tx.to_bjj,
 833		tx.amount, tx.token_id, tx.amount_usd, 
 834		tx.batch_num, tx.eth_block_num, tx.to_forge_l1_txs_num, tx.user_origin, 
 835		tx.load_amount, tx.load_amount_usd, tx.fee, tx.fee_usd, tx.nonce,
 836		token.token_id, token.item_id AS token_item_id, token.eth_block_num AS token_block,
 837		token.eth_addr, token.name, token.symbol, token.decimals, token.usd,
 838		token.usd_update, block.timestamp
 839		FROM tx INNER JOIN token ON tx.token_id = token.token_id 
 840		INNER JOIN block ON tx.eth_block_num = block.eth_block_num 
 841		WHERE tx.id = $1;`, txID,
 842	)
 843	return tx, err
 844}
 845
 846// GetHistoryTxs returns a list of txs from the DB using the HistoryTx struct
 847// and pagination info
 848func (hdb *HistoryDB) GetHistoryTxs(
 849	ethAddr *ethCommon.Address, bjj *babyjub.PublicKey,
 850	tokenID *common.TokenID, idx *common.Idx, batchNum *uint, txType *common.TxType,
 851	fromItem, limit *uint, order string,
 852) ([]TxAPI, uint64, error) {
 853	if ethAddr != nil && bjj != nil {
 854		return nil, 0, errors.New("ethAddr and bjj are incompatible")
 855	}
 856	var query string
 857	var args []interface{}
 858	queryStr := `SELECT tx.item_id, tx.is_l1, tx.id, tx.type, tx.position, 
 859	hez_idx(tx.from_idx, token.symbol) AS from_idx, tx.from_eth_addr, tx.from_bjj,
 860	hez_idx(tx.to_idx, token.symbol) AS to_idx, tx.to_eth_addr, tx.to_bjj,
 861	tx.amount, tx.token_id, tx.amount_usd, 
 862	tx.batch_num, tx.eth_block_num, tx.to_forge_l1_txs_num, tx.user_origin, 
 863	tx.load_amount, tx.load_amount_usd, tx.fee, tx.fee_usd, tx.nonce,
 864	token.token_id, token.item_id AS token_item_id, token.eth_block_num AS token_block,
 865	token.eth_addr, token.name, token.symbol, token.decimals, token.usd,
 866	token.usd_update, block.timestamp, count(*) OVER() AS total_items 
 867	FROM tx INNER JOIN token ON tx.token_id = token.token_id 
 868	INNER JOIN block ON tx.eth_block_num = block.eth_block_num `
 869	// Apply filters
 870	nextIsAnd := false
 871	// ethAddr filter
 872	if ethAddr != nil {
 873		queryStr = `WITH acc AS 
 874		(select idx from account where eth_addr = ?) ` + queryStr
 875		queryStr += ", acc WHERE (tx.from_idx IN(acc.idx) OR tx.to_idx IN(acc.idx)) "
 876		nextIsAnd = true
 877		args = append(args, ethAddr)
 878	} else if bjj != nil { // bjj filter
 879		queryStr = `WITH acc AS 
 880		(select idx from account where bjj = ?) ` + queryStr
 881		queryStr += ", acc WHERE (tx.from_idx IN(acc.idx) OR tx.to_idx IN(acc.idx)) "
 882		nextIsAnd = true
 883		args = append(args, bjj)
 884	}
 885	// tokenID filter
 886	if tokenID != nil {
 887		if nextIsAnd {
 888			queryStr += "AND "
 889		} else {
 890			queryStr += "WHERE "
 891		}
 892		queryStr += "tx.token_id = ? "
 893		args = append(args, tokenID)
 894		nextIsAnd = true
 895	}
 896	// idx filter
 897	if idx != nil {
 898		if nextIsAnd {
 899			queryStr += "AND "
 900		} else {
 901			queryStr += "WHERE "
 902		}
 903		queryStr += "(tx.from_idx = ? OR tx.to_idx = ?) "
 904		args = append(args, idx, idx)
 905		nextIsAnd = true
 906	}
 907	// batchNum filter
 908	if batchNum != nil {
 909		if nextIsAnd {
 910			queryStr += "AND "
 911		} else {
 912			queryStr += "WHERE "
 913		}
 914		queryStr += "tx.batch_num = ? "
 915		args = append(args, batchNum)
 916		nextIsAnd = true
 917	}
 918	// txType filter
 919	if txType != nil {
 920		if nextIsAnd {
 921			queryStr += "AND "
 922		} else {
 923			queryStr += "WHERE "
 924		}
 925		queryStr += "tx.type = ? "
 926		args = append(args, txType)
 927		nextIsAnd = true
 928	}
 929	if fromItem != nil {
 930		if nextIsAnd {
 931			queryStr += "AND "
 932		} else {
 933			queryStr += "WHERE "
 934		}
 935		if order == OrderAsc {
 936			queryStr += "tx.item_id >= ? "
 937		} else {
 938			queryStr += "tx.item_id <= ? "
 939		}
 940		args = append(args, fromItem)
 941		nextIsAnd = true
 942	}
 943	if nextIsAnd {
 944		queryStr += "AND "
 945	} else {
 946		queryStr += "WHERE "
 947	}
 948	queryStr += "tx.batch_num IS NOT NULL "
 949
 950	// pagination
 951	queryStr += "ORDER BY tx.item_id "
 952	if order == OrderAsc {
 953		queryStr += " ASC "
 954	} else {
 955		queryStr += " DESC "
 956	}
 957	queryStr += fmt.Sprintf("LIMIT %d;", *limit)
 958	query = hdb.db.Rebind(queryStr)
 959	// log.Debug(query)
 960	txsPtrs := []*TxAPI{}
 961	if err := meddler.QueryAll(hdb.db, &txsPtrs, query, args...); err != nil {
 962		return nil, 0, err
 963	}
 964	txs := db.SlicePtrsToSlice(txsPtrs).([]TxAPI)
 965	if len(txs) == 0 {
 966		return nil, 0, sql.ErrNoRows
 967	}
 968	return txs, txs[0].TotalItems - uint64(len(txs)), nil
 969}
 970
 971// GetAllExits returns all exit from the DB
 972func (hdb *HistoryDB) GetAllExits() ([]common.ExitInfo, error) {
 973	var exits []*common.ExitInfo
 974	err := meddler.QueryAll(
 975		hdb.db, &exits,
 976		`SELECT exit_tree.batch_num, exit_tree.account_idx, exit_tree.merkle_proof,
 977		exit_tree.balance, exit_tree.instant_withdrawn, exit_tree.delayed_withdraw_request,
 978		exit_tree.delayed_withdrawn FROM exit_tree;`,
 979	)
 980	return db.SlicePtrsToSlice(exits).([]common.ExitInfo), err
 981}
 982
 983// GetExitAPI returns a exit from the DB
 984func (hdb *HistoryDB) GetExitAPI(batchNum *uint, idx *common.Idx) (*ExitAPI, error) {
 985	exit := &ExitAPI{}
 986	err := meddler.QueryRow(
 987		hdb.db, exit, `SELECT exit_tree.item_id, exit_tree.batch_num,
 988		hez_idx(exit_tree.account_idx, token.symbol) AS account_idx,
 989		exit_tree.merkle_proof, exit_tree.balance, exit_tree.instant_withdrawn,
 990		exit_tree.delayed_withdraw_request, exit_tree.delayed_withdrawn,
 991		token.token_id, token.item_id AS token_item_id, 
 992		token.eth_block_num AS token_block, token.eth_addr, token.name, token.symbol, 
 993		token.decimals, token.usd, token.usd_update
 994		FROM exit_tree INNER JOIN account ON exit_tree.account_idx = account.idx 
 995		INNER JOIN token ON account.token_id = token.token_id 
 996		WHERE exit_tree.batch_num = $1 AND exit_tree.account_idx = $2;`, batchNum, idx,
 997	)
 998	return exit, err
 999}
1000
1001// GetExitsAPI returns a list of exits from the DB and pagination info
1002func (hdb *HistoryDB) GetExitsAPI(
1003	ethAddr *ethCommon.Address, bjj *babyjub.PublicKey, tokenID *common.TokenID,
1004	idx *common.Idx, batchNum *uint, onlyPendingWithdraws *bool,
1005	fromItem, limit *uint, order string,
1006) ([]ExitAPI, uint64, error) {
1007	if ethAddr != nil && bjj != nil {
1008		return nil, 0, errors.New("ethAddr and bjj are incompatible")
1009	}
1010	var query string
1011	var args []interface{}
1012	queryStr := `SELECT exit_tree.item_id, exit_tree.batch_num,
1013	hez_idx(exit_tree.account_idx, token.symbol) AS account_idx,
1014	exit_tree.merkle_proof, exit_tree.balance, exit_tree.instant_withdrawn,
1015	exit_tree.delayed_withdraw_request, exit_tree.delayed_withdrawn,
1016	token.token_id, token.item_id AS token_item_id,
1017	token.eth_block_num AS token_block, token.eth_addr, token.name, token.symbol,
1018	token.decimals, token.usd, token.usd_update, COUNT(*) OVER() AS total_items
1019	FROM exit_tree INNER JOIN account ON exit_tree.account_idx = account.idx 
1020	INNER JOIN token ON account.token_id = token.token_id `
1021	// Apply filters
1022	nextIsAnd := false
1023	// ethAddr filter
1024	if ethAddr != nil {
1025		queryStr += "WHERE account.eth_addr = ? "
1026		nextIsAnd = true
1027		args = append(args, ethAddr)
1028	} else if bjj != nil { // bjj filter
1029		queryStr += "WHERE account.bjj = ? "
1030		nextIsAnd = true
1031		args = append(args, bjj)
1032	}
1033	// tokenID filter
1034	if tokenID != nil {
1035		if nextIsAnd {
1036			queryStr += "AND "
1037		} else {
1038			queryStr += "WHERE "
1039		}
1040		queryStr += "account.token_id = ? "
1041		args = append(args, tokenID)
1042		nextIsAnd = true
1043	}
1044	// idx filter
1045	if idx != nil {
1046		if nextIsAnd {
1047			queryStr += "AND "
1048		} else {
1049			queryStr += "WHERE "
1050		}
1051		queryStr += "exit_tree.account_idx = ? "
1052		args = append(args, idx)
1053		nextIsAnd = true
1054	}
1055	// batchNum filter
1056	if batchNum != nil {
1057		if nextIsAnd {
1058			queryStr += "AND "
1059		} else {
1060			queryStr += "WHERE "
1061		}
1062		queryStr += "exit_tree.batch_num = ? "
1063		args = append(args, batchNum)
1064		nextIsAnd = true
1065	}
1066	// onlyPendingWithdraws
1067	if onlyPendingWithdraws != nil {
1068		if *onlyPendingWithdraws {
1069			if nextIsAnd {
1070				queryStr += "AND "
1071			} else {
1072				queryStr += "WHERE "
1073			}
1074			queryStr += "(exit_tree.instant_withdrawn IS NULL AND exit_tree.delayed_withdrawn IS NULL) "
1075			nextIsAnd = true
1076		}
1077	}
1078	if fromItem != nil {
1079		if nextIsAnd {
1080			queryStr += "AND "
1081		} else {
1082			queryStr += "WHERE "
1083		}
1084		if order == OrderAsc {
1085			queryStr += "exit_tree.item_id >= ? "
1086		} else {
1087			queryStr += "exit_tree.item_id <= ? "
1088		}
1089		args = append(args, fromItem)
1090		// nextIsAnd = true
1091	}
1092	// pagination
1093	queryStr += "ORDER BY exit_tree.item_id "
1094	if order == OrderAsc {
1095		queryStr += " ASC "
1096	} else {
1097		queryStr += " DESC "
1098	}
1099	queryStr += fmt.Sprintf("LIMIT %d;", *limit)
1100	query = hdb.db.Rebind(queryStr)
1101	// log.Debug(query)
1102	exits := []*ExitAPI{}
1103	if err := meddler.QueryAll(hdb.db, &exits, query, args...); err != nil {
1104		return nil, 0, err
1105	}
1106	if len(exits) == 0 {
1107		return nil, 0, sql.ErrNoRows
1108	}
1109	return db.SlicePtrsToSlice(exits).([]ExitAPI), exits[0].TotalItems - uint64(len(exits)), nil
1110}
1111
1112// GetAllL1UserTxs returns all L1UserTxs from the DB
1113func (hdb *HistoryDB) GetAllL1UserTxs() ([]common.L1Tx, error) {
1114	var txs []*common.L1Tx
1115	err := meddler.QueryAll(
1116		hdb.db, &txs,
1117		`SELECT tx.id, tx.to_forge_l1_txs_num, tx.position, tx.user_origin,
1118		tx.from_idx, tx.from_eth_addr, tx.from_bjj, tx.to_idx, tx.token_id, tx.amount,
1119		tx.load_amount, tx.eth_block_num, tx.type, tx.batch_num
1120		FROM tx WHERE is_l1 = TRUE AND user_origin = TRUE;`,
1121	)
1122	return db.SlicePtrsToSlice(txs).([]common.L1Tx), err
1123}
1124
1125// GetAllL1CoordinatorTxs returns all L1CoordinatorTxs from the DB
1126func (hdb *HistoryDB) GetAllL1CoordinatorTxs() ([]common.L1Tx, error) {
1127	var txs []*common.L1Tx
1128	err := meddler.QueryAll(
1129		hdb.db, &txs,
1130		`SELECT tx.id, tx.to_forge_l1_txs_num, tx.position, tx.user_origin,
1131		tx.from_idx, tx.from_eth_addr, tx.from_bjj, tx.to_idx, tx.token_id, tx.amount,
1132		tx.load_amount, tx.eth_block_num, tx.type, tx.batch_num
1133		FROM tx WHERE is_l1 = TRUE AND user_origin = FALSE;`,
1134	)
1135	return db.SlicePtrsToSlice(txs).([]common.L1Tx), err
1136}
1137
1138// GetAllL2Txs returns all L2Txs from the DB
1139func (hdb *HistoryDB) GetAllL2Txs() ([]common.L2Tx, error) {
1140	var txs []*common.L2Tx
1141	err := meddler.QueryAll(
1142		hdb.db, &txs,
1143		`SELECT tx.id, tx.batch_num, tx.position,
1144		tx.from_idx, tx.to_idx, tx.amount, tx.fee, tx.nonce,
1145		tx.type, tx.eth_block_num
1146		FROM tx WHERE is_l1 = FALSE;`,
1147	)
1148	return db.SlicePtrsToSlice(txs).([]common.L2Tx), err
1149}
1150
1151// GetL1UserTxs gets L1 User Txs to be forged in the L1Batch with toForgeL1TxsNum.
1152func (hdb *HistoryDB) GetL1UserTxs(toForgeL1TxsNum int64) ([]common.L1Tx, error) {
1153	var txs []*common.L1Tx
1154	err := meddler.QueryAll(
1155		hdb.db, &txs,
1156		`SELECT tx.id, tx.to_forge_l1_txs_num, tx.position, tx.user_origin,
1157		tx.from_idx, tx.from_eth_addr, tx.from_bjj, tx.to_idx, tx.token_id, tx.amount,
1158		tx.load_amount, tx.eth_block_num, tx.type, tx.batch_num
1159		FROM tx WHERE to_forge_l1_txs_num = $1 AND is_l1 = TRUE AND user_origin = TRUE;`,
1160		toForgeL1TxsNum,
1161	)
1162	return db.SlicePtrsToSlice(txs).([]common.L1Tx), err
1163}
1164
1165// TODO: Think about chaning all the queries that return a last value, to queries that return the next valid value.
1166
1167// GetLastTxsPosition for a given to_forge_l1_txs_num
1168func (hdb *HistoryDB) GetLastTxsPosition(toForgeL1TxsNum int64) (int, error) {
1169	row := hdb.db.QueryRow("SELECT MAX(position) FROM tx WHERE to_forge_l1_txs_num = $1;", toForgeL1TxsNum)
1170	var lastL1TxsPosition int
1171	return lastL1TxsPosition, row.Scan(&lastL1TxsPosition)
1172}
1173
1174// GetSCVars returns the rollup, auction and wdelayer smart contracts variables at their last update.
1175func (hdb *HistoryDB) GetSCVars() (*common.RollupVariables, *common.AuctionVariables,
1176	*common.WDelayerVariables, error) {
1177	var rollup common.RollupVariables
1178	var auction common.AuctionVariables
1179	var wDelayer common.WDelayerVariables
1180	if err := meddler.QueryRow(hdb.db, &rollup,
1181		"SELECT * FROM rollup_vars ORDER BY eth_block_num DESC LIMIT 1;"); err != nil {
1182		return nil, nil, nil, err
1183	}
1184	if err := meddler.QueryRow(hdb.db, &auction,
1185		"SELECT * FROM auction_vars ORDER BY eth_block_num DESC LIMIT 1;"); err != nil {
1186		return nil, nil, nil, err
1187	}
1188	if err := meddler.QueryRow(hdb.db, &wDelayer,
1189		"SELECT * FROM wdelayer_vars ORDER BY eth_block_num DESC LIMIT 1;"); err != nil {
1190		return nil, nil, nil, err
1191	}
1192	return &rollup, &auction, &wDelayer, nil
1193}
1194
1195func (hdb *HistoryDB) setRollupVars(d meddler.DB, rollup *common.RollupVariables) error {
1196	return meddler.Insert(d, "rollup_vars", rollup)
1197}
1198
1199func (hdb *HistoryDB) setAuctionVars(d meddler.DB, auction *common.AuctionVariables) error {
1200	return meddler.Insert(d, "auction_vars", auction)
1201}
1202
1203func (hdb *HistoryDB) setWDelayerVars(d meddler.DB, wDelayer *common.WDelayerVariables) error {
1204	return meddler.Insert(d, "wdelayer_vars", wDelayer)
1205}
1206
1207// SetInitialSCVars sets the initial state of rollup, auction, wdelayer smart
1208// contract variables.  This initial state is stored linked to block 0, which
1209// always exist in the DB and is used to store initialization data that always
1210// exist in the smart contracts.
1211func (hdb *HistoryDB) SetInitialSCVars(rollup *common.RollupVariables,
1212	auction *common.AuctionVariables, wDelayer *common.WDelayerVariables) error {
1213	txn, err := hdb.db.Begin()
1214	if err != nil {
1215		return err
1216	}
1217	defer func() {
1218		if err != nil {
1219			db.Rollback(txn)
1220		}
1221	}()
1222	// Force EthBlockNum to be 0 because it's the block used to link data
1223	// that belongs to the creation of the smart contracts
1224	rollup.EthBlockNum = 0
1225	auction.EthBlockNum = 0
1226	wDelayer.EthBlockNum = 0
1227	if err := hdb.setRollupVars(txn, rollup); err != nil {
1228		return err
1229	}
1230	if err := hdb.setAuctionVars(txn, auction); err != nil {
1231		return err
1232	}
1233	if err := hdb.setWDelayerVars(txn, wDelayer); err != nil {
1234		return err
1235	}
1236
1237	return txn.Commit()
1238}
1239
1240// AddBlockSCData stores all the information of a block retrieved by the
1241// Synchronizer.  Blocks should be inserted in order, leaving no gaps because
1242// the pagination system of the API/DB depends on this.  Within blocks, all
1243// items should also be in the correct order (Accounts, Tokens, Txs, etc.)
1244func (hdb *HistoryDB) AddBlockSCData(blockData *common.BlockData) (err error) {
1245	txn, err := hdb.db.Begin()
1246	if err != nil {
1247		return err
1248	}
1249	defer func() {
1250		if err != nil {
1251			db.Rollback(txn)
1252		}
1253	}()
1254
1255	// Add block
1256	if err := hdb.addBlock(txn, &blockData.Block); err != nil {
1257		return err
1258	}
1259
1260	// Add Coordinators
1261	if len(blockData.Auction.Coordinators) > 0 {
1262		if err := hdb.addCoordinators(txn, blockData.Auction.Coordinators); err != nil {
1263			return err
1264		}
1265	}
1266
1267	// Add Bids
1268	if len(blockData.Auction.Bids) > 0 {
1269		if err := hdb.addBids(txn, blockData.Auction.Bids); err != nil {
1270			return err
1271		}
1272	}
1273
1274	// Add Tokens
1275	if len(blockData.Rollup.AddedTokens) > 0 {
1276		if err := hdb.addTokens(txn, blockData.Rollup.AddedTokens); err != nil {
1277			return err
1278		}
1279	}
1280
1281	// Add l1 Txs
1282	if len(blockData.Rollup.L1UserTxs) > 0 {
1283		if err := hdb.addL1Txs(txn, blockData.Rollup.L1UserTxs); err != nil {
1284			return err
1285		}
1286	}
1287
1288	// Add Batches
1289	for i := range blockData.Rollup.Batches {
1290		batch := &blockData.Rollup.Batches[i]
1291		// Add Batch: this will trigger an update on the DB
1292		// that will set the batch num of forged L1 txs in this batch
1293		if err = hdb.addBatch(txn, &batch.Batch); err != nil {
1294			return err
1295		}
1296
1297		// Add unforged l1 Txs
1298		if batch.L1Batch {
1299			if len(batch.L1CoordinatorTxs) > 0 {
1300				if err := hdb.addL1Txs(txn, batch.L1CoordinatorTxs); err != nil {
1301					return err
1302				}
1303			}
1304		}
1305
1306		// Add l2 Txs
1307		if len(batch.L2Txs) > 0 {
1308			if err := hdb.addL2Txs(txn, batch.L2Txs); err != nil {
1309				return err
1310			}
1311		}
1312
1313		// Add accounts
1314		if len(batch.CreatedAccounts) > 0 {
1315			if err := hdb.addAccounts(txn, batch.CreatedAccounts); err != nil {
1316				return err
1317			}
1318		}
1319
1320		// Add exit tree
1321		if len(batch.ExitTree) > 0 {
1322			if err := hdb.addExitTree(txn, batch.ExitTree); err != nil {
1323				return err
1324			}
1325		}
1326	}
1327	if blockData.Rollup.Vars != nil {
1328		if err := hdb.setRollupVars(txn, blockData.Rollup.Vars); err != nil {
1329			return err
1330		}
1331	}
1332	if blockData.Auction.Vars != nil {
1333		if err := hdb.setAuctionVars(txn, blockData.Auction.Vars); err != nil {
1334			return err
1335		}
1336	}
1337	if blockData.WDelayer.Vars != nil {
1338		if err := hdb.setWDelayerVars(txn, blockData.WDelayer.Vars); err != nil {
1339			return err
1340		}
1341	}
1342
1343	if len(blockData.Rollup.Withdrawals) > 0 {
1344		instantWithdrawn := []exitID{}
1345		delayedWithdrawRequest := []exitID{}
1346		for _, withdraw := range blockData.Rollup.Withdrawals {
1347			exitID := exitID{
1348				batchNum: int64(withdraw.NumExitRoot),
1349				idx:      int64(withdraw.Idx),
1350			}
1351			if withdraw.InstantWithdraw {
1352				instantWithdrawn = append(instantWithdrawn, exitID)
1353			} else {
1354				delayedWithdrawRequest = append(delayedWithdrawRequest, exitID)
1355			}
1356		}
1357		if err := hdb.updateExitTree(txn, blockData.Block.EthBlockNum,
1358			instantWithdrawn, delayedWithdrawRequest); err != nil {
1359			return err
1360		}
1361	}
1362
1363	// TODO: Process WDelayer withdrawals
1364
1365	return txn.Commit()
1366}
1367
1368// GetCoordinatorAPI returns a coordinator by its bidderAddr
1369func (hdb *HistoryDB) GetCoordinatorAPI(bidderAddr ethCommon.Address) (*CoordinatorAPI, error) {
1370	coordinator := &CoordinatorAPI{}
1371	err := meddler.QueryRow(hdb.db, coordinator, "SELECT * FROM coordinator WHERE bidder_addr = $1;", bidderAddr)
1372	return coordinator, err
1373}
1374
1375// GetCoordinatorsAPI returns a list of coordinators from the DB and pagination info
1376func (hdb *HistoryDB) GetCoordinatorsAPI(fromItem, limit *uint, order string) ([]CoordinatorAPI, uint64, error) {
1377	var query string
1378	var args []interface{}
1379	queryStr := `SELECT coordinator.*, 
1380	COUNT(*) OVER() AS total_items
1381	FROM coordinator `
1382	// Apply filters
1383	if fromItem != nil {
1384		queryStr += "WHERE "
1385		if order == OrderAsc {
1386			queryStr += "coordinator.item_id >= ? "
1387		} else {
1388			queryStr += "coordinator.item_id <= ? "
1389		}
1390		args = append(args, fromItem)
1391	}
1392	// pagination
1393	queryStr += "ORDER BY coordinator.item_id "
1394	if order == OrderAsc {
1395		queryStr += " ASC "
1396	} else {
1397		queryStr += " DESC "
1398	}
1399	queryStr += fmt.Sprintf("LIMIT %d;", *limit)
1400	query = hdb.db.Rebind(queryStr)
1401
1402	coordinators := []*CoordinatorAPI{}
1403	if err := meddler.QueryAll(hdb.db, &coordinators, query, args...); err != nil {
1404		return nil, 0, err
1405	}
1406	if len(coordinators) == 0 {
1407		return nil, 0, sql.ErrNoRows
1408	}
1409	return db.SlicePtrsToSlice(coordinators).([]CoordinatorAPI),
1410		coordinators[0].TotalItems - uint64(len(coordinators)), nil
1411}
1412
1413// AddAuctionVars insert auction vars into the DB
1414func (hdb *HistoryDB) AddAuctionVars(auctionVars *common.AuctionVariables) error {
1415	return meddler.Insert(hdb.db, "auction_vars", auctionVars)
1416}
1417
1418// GetAuctionVars returns auction variables
1419func (hdb *HistoryDB) GetAuctionVars() (*common.AuctionVariables, error) {
1420	auctionVars := &common.AuctionVariables{}
1421	err := meddler.QueryRow(
1422		hdb.db, auctionVars, `SELECT * FROM auction_vars;`,
1423	)
1424	return auctionVars, err
1425}
1426
1427// GetAccountAPI returns an account by its index
1428func (hdb *HistoryDB) GetAccountAPI(idx common.Idx) (*AccountAPI, error) {
1429	account := &AccountAPI{}
1430	err := meddler.QueryRow(hdb.db, account, `SELECT account.item_id, hez_idx(account.idx, 
1431	token.symbol) as idx, account.batch_num, account.bjj, account.eth_addr,
1432	token.token_id, token.item_id AS token_item_id, token.eth_block_num AS token_block,
1433	token.eth_addr as token_eth_addr, token.name, token.symbol, token.decimals, token.usd, token.usd_update 
1434	FROM account INNER JOIN token ON account.token_id = token.token_id WHERE idx = $1;`, idx)
1435
1436	if err != nil {
1437		return nil, err
1438	}
1439
1440	return account, nil
1441}
1442
1443// GetAccountsAPI returns a list of accounts from the DB and pagination info
1444func (hdb *HistoryDB) GetAccountsAPI(
1445	tokenIDs []common.TokenID, ethAddr *ethCommon.Address,
1446	bjj *babyjub.PublicKey, fromItem, limit *uint, order string,
1447) ([]AccountAPI, uint64, error) {
1448	if ethAddr != nil && bjj != nil {
1449		return nil, 0, errors.New("ethAddr and bjj are incompatible")
1450	}
1451	var query string
1452	var args []interface{}
1453	queryStr := `SELECT account.item_id, hez_idx(account.idx, token.symbol) as idx, account.batch_num, 
1454	account.bjj, account.eth_addr, token.token_id, token.item_id AS token_item_id, token.eth_block_num AS token_block,
1455	token.eth_addr as token_eth_addr, token.name, token.symbol, token.decimals, token.usd, token.usd_update, 
1456	COUNT(*) OVER() AS total_items
1457	FROM account INNER JOIN token ON account.token_id = token.token_id `
1458	// Apply filters
1459	nextIsAnd := false
1460	// ethAddr filter
1461	if ethAddr != nil {
1462		queryStr += "WHERE account.eth_addr = ? "
1463		nextIsAnd = true
1464		args = append(args, ethAddr)
1465	} else if bjj != nil { // bjj filter
1466		queryStr += "WHERE account.bjj = ? "
1467		nextIsAnd = true
1468		args = append(args, bjj)
1469	}
1470	// tokenID filter
1471	if len(tokenIDs) > 0 {
1472		if nextIsAnd {
1473			queryStr += "AND "
1474		} else {
1475			queryStr += "WHERE "
1476		}
1477		queryStr += "account.token_id IN (?) "
1478		args = append(args, tokenIDs)
1479		nextIsAnd = true
1480	}
1481	if fromItem != nil {
1482		if nextIsAnd {
1483			queryStr += "AND "
1484		} else {
1485			queryStr += "WHERE "
1486		}
1487		if order == OrderAsc {
1488			queryStr += "account.item_id >= ? "
1489		} else {
1490			queryStr += "account.item_id <= ? "
1491		}
1492		args = append(args, fromItem)
1493	}
1494	// pagination
1495	queryStr += "ORDER BY account.item_id "
1496	if order == OrderAsc {
1497		queryStr += " ASC "
1498	} else {
1499		queryStr += " DESC "
1500	}
1501	queryStr += fmt.Sprintf("LIMIT %d;", *limit)
1502	query, argsQ, err := sqlx.In(queryStr, args...)
1503	if err != nil {
1504		return nil, 0, err
1505	}
1506	query = hdb.db.Rebind(query)
1507
1508	accounts := []*AccountAPI{}
1509	if err := meddler.QueryAll(hdb.db, &accounts, query, argsQ...); err != nil {
1510		return nil, 0, err
1511	}
1512	if len(accounts) == 0 {
1513		return nil, 0, sql.ErrNoRows
1514	}
1515
1516	return db.SlicePtrsToSlice(accounts).([]AccountAPI),
1517		accounts[0].TotalItems - uint64(len(accounts)), nil
1518}
1519
1520// GetMetrics returns metrics
1521func (hdb *HistoryDB) GetMetrics(lastBatchNum common.BatchNum) (*Metrics, error) {
1522	metricsTotals := &MetricsTotals{}
1523	metrics := &Metrics{}
1524	err := meddler.QueryRow(
1525		hdb.db, metricsTotals, `SELECT COUNT(tx.*) as total_txs, MIN(tx.batch_num) as batch_num 
1526		FROM tx INNER JOIN block ON tx.eth_block_num = block.eth_block_num
1527		WHERE block.timestamp >= NOW() - INTERVAL '24 HOURS';`)
1528	if err != nil {
1529		return nil, err
1530	}
1531
1532	metrics.TransactionsPerSecond = float64(metricsTotals.TotalTransactions / (24 * 60 * 60))
1533	if (lastBatchNum - metricsTotals.FirstBatchNum) > 0 {
1534		metrics.TransactionsPerBatch = float64(int64(metricsTotals.TotalTransactions) /
1535			int64(lastBatchNum-metricsTotals.FirstBatchNum))
1536	} else {
1537		metrics.TransactionsPerBatch = float64(0)
1538	}
1539
1540	err = meddler.QueryRow(
1541		hdb.db, metricsTotals, `SELECT COUNT(*) AS total_batches, 
1542		SUM(total_fees_usd) AS total_fees FROM batch 
1543		WHERE batch_num > $1;`, metricsTotals.FirstBatchNum)
1544	if err != nil {
1545		return nil, err
1546	}
1547	if metricsTotals.TotalBatches > 0 {
1548		metrics.BatchFrequency = float64((24 * 60 * 60) / metricsTotals.TotalBatches)
1549	} else {
1550		metrics.BatchFrequency = 0
1551	}
1552	if metricsTotals.TotalTransactions > 0 {
1553		metrics.AvgTransactionFee = metricsTotals.TotalFeesUSD / float64(metricsTotals.TotalTransactions)
1554	} else {
1555		metrics.AvgTransactionFee = 0
1556	}
1557	err = meddler.QueryRow(
1558		hdb.db, metrics,
1559		`SELECT COUNT(*) AS total_bjjs, COUNT(DISTINCT(bjj)) AS total_accounts FROM account;`)
1560	if err != nil {
1561		return nil, err
1562	}
1563
1564	return metrics, nil
1565}
1566
1567// GetAvgTxFee returns average transaction fee of the last 1h
1568func (hdb *HistoryDB) GetAvgTxFee() (float64, error) {
1569	metricsTotals := &MetricsTotals{}
1570	err := meddler.QueryRow(
1571		hdb.db, metricsTotals, `SELECT COUNT(tx.*) as total_txs, MIN(tx.batch_num) as batch_num 
1572		FROM tx INNER JOIN block ON tx.eth_block_num = block.eth_block_num
1573		WHERE block.timestamp >= NOW() - INTERVAL '1 HOURS';`)
1574	if err != nil {
1575		return 0, err
1576	}
1577	err = meddler.QueryRow(
1578		hdb.db, metricsTotals, `SELECT COUNT(*) AS total_batches, 
1579		SUM(total_fees_usd) AS total_fees FROM batch 
1580		WHERE batch_num > $1;`, metricsTotals.FirstBatchNum)
1581	if err != nil {
1582		return 0, err
1583	}
1584
1585	var avgTransactionFee float64
1586	if metricsTotals.TotalTransactions > 0 {
1587		avgTransactionFee = metricsTotals.TotalFeesUSD / float64(metricsTotals.TotalTransactions)
1588	} else {
1589		avgTransactionFee = 0
1590	}
1591
1592	return avgTransactionFee, nil
1593}