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assets.go
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assets.go
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package models
import (
"context"
"database/sql"
"errors"
"fmt"
"strconv"
"strings"
"time"
"github.com/diadata-org/diadata/pkg/dia"
"github.com/ethereum/go-ethereum/common"
"github.com/go-redis/redis"
"github.com/jackc/pgtype"
"github.com/jackc/pgx/v4"
)
// GetKeyAsset returns an asset's key in the redis cache of the asset table.
// @assetID refers to the primary key asset_id in the asset table.
func (rdb *RelDB) GetKeyAsset(asset dia.Asset) (string, error) {
ID, err := rdb.GetAssetID(asset)
if err != nil {
return "", err
}
return keyAssetCache + ID, nil
}
// -------------------------------------------------------------
// Postgres methods
// -------------------------------------------------------------
// -------------------------------------------------------------
// asset TABLE methods
// -------------------------------------------------------------
// SetAsset stores an asset into postgres.
func (rdb *RelDB) SetAsset(asset dia.Asset) error {
query := fmt.Sprintf("INSERT INTO %s (symbol,name,address,decimals,blockchain) VALUES ($1,$2,$3,$4,$5) ON CONFLICT (address,blockchain) DO NOTHING", assetTable)
_, err := rdb.postgresClient.Exec(context.Background(), query, asset.Symbol, asset.Name, asset.Address, strconv.Itoa(int(asset.Decimals)), asset.Blockchain)
if err != nil {
return err
}
return nil
}
// GetAssetID returns the unique identifier of @asset in postgres table asset, if the entry exists.
func (rdb *RelDB) GetAssetID(asset dia.Asset) (ID string, err error) {
query := fmt.Sprintf("SELECT asset_id FROM %s WHERE address=$1 AND blockchain=$2", assetTable)
err = rdb.postgresClient.QueryRow(context.Background(), query, asset.Address, asset.Blockchain).Scan(&ID)
if err != nil {
return
}
return
}
func (rdb *RelDB) GetAssetMap(asset_id string) (ID string, err error) {
query := fmt.Sprintf("SELECT group_id FROM %s WHERE asset_id=$1", assetIdent)
err = rdb.postgresClient.QueryRow(context.Background(), query, asset_id).Scan(&ID)
if err != nil {
return
}
return
}
func (rdb *RelDB) GetAssetByGroupID(group_id string) (assets []dia.Asset, err error) {
var (
rows pgx.Rows
decimals sql.NullInt64
)
query := fmt.Sprintf("SELECT symbol,name,address,blockchain,decimals FROM %s WHERE asset_id in (select asset_id from %s where group_id=$1)", assetTable, assetIdent)
rows, err = rdb.postgresClient.Query(context.Background(), query, group_id)
if err != nil {
return
}
defer rows.Close()
for rows.Next() {
var asset dia.Asset
err := rows.Scan(&asset.Symbol, &asset.Name, &asset.Address, &asset.Blockchain, &decimals)
if err != nil {
log.Error(err)
}
if decimals.Valid {
asset.Decimals = uint8(decimals.Int64)
}
// asset.Blockchain = blockchain
assets = append(assets, asset)
}
return
}
// SetAsset stores an asset into postgres.
func (rdb *RelDB) InsertAssetMap(group_id string, asset_id string) error {
query := fmt.Sprintf("INSERT INTO %s (group_id,asset_id) VALUES ($1,$2)", assetIdent)
log.Println("query", query)
_, err := rdb.postgresClient.Exec(context.Background(), query, group_id, asset_id)
if err != nil {
return err
}
return nil
}
func (rdb *RelDB) InsertNewAssetMap(asset_id string) error {
query := fmt.Sprintf("INSERT INTO %s (asset_id) VALUES ($1)", assetIdent)
log.Println("query", query)
_, err := rdb.postgresClient.Exec(context.Background(), query, asset_id)
if err != nil {
return err
}
return nil
}
// GetAsset is the standard method in order to uniquely retrieve an asset from asset table.
func (rdb *RelDB) GetAsset(address, blockchain string) (asset dia.Asset, err error) {
cachedAsset, errCache := rdb.GetAssetCache(blockchain, address)
if errCache == nil {
asset = cachedAsset
return
}
var decimals sql.NullInt64
query := fmt.Sprintf("SELECT symbol,name,address,decimals,blockchain FROM %s WHERE address=$1 AND blockchain=$2", assetTable)
err = rdb.postgresClient.QueryRow(context.Background(), query, address, blockchain).Scan(
&asset.Symbol,
&asset.Name,
&asset.Address,
&decimals,
&asset.Blockchain,
)
if err != nil {
return
}
if decimals.Valid {
asset.Decimals = uint8(decimals.Int64)
}
return
}
// GetAssetByID returns an asset by its uuid
func (rdb *RelDB) GetAssetByID(assetID string) (asset dia.Asset, err error) {
var decimals sql.NullInt64
query := fmt.Sprintf("SELECT symbol,name,address,decimals,blockchain FROM %s WHERE asset_id=$1", assetTable)
err = rdb.postgresClient.QueryRow(context.Background(), query, assetID).Scan(&asset.Symbol, &asset.Name, &asset.Address, &decimals, &asset.Blockchain)
if err != nil {
return
}
if decimals.Valid {
asset.Decimals = uint8(decimals.Int64)
}
return
}
// GetAllAssets returns all assets on @blockchain from asset table.
func (rdb *RelDB) GetAllAssets(blockchain string) (assets []dia.Asset, err error) {
var rows pgx.Rows
query := fmt.Sprintf("SELECT symbol,name,address,decimals FROM %s WHERE blockchain=$1", assetTable)
rows, err = rdb.postgresClient.Query(context.Background(), query, blockchain)
if err != nil {
return
}
defer rows.Close()
var decimals sql.NullInt64
for rows.Next() {
var asset dia.Asset
err := rows.Scan(&asset.Symbol, &asset.Name, &asset.Address, &decimals)
if err != nil {
log.Error(err)
}
if decimals.Valid {
asset.Decimals = uint8(decimals.Int64)
}
asset.Blockchain = blockchain
assets = append(assets, asset)
}
return
}
// GetAssetsBySymbolName returns a (possibly multiple) dia.Asset by its symbol and name from postgres.
// If @name is an empty string, it returns all assets with @symbol.
// If @symbol is an empty string, it returns all assets with @name.
func (rdb *RelDB) GetAssetsBySymbolName(symbol, name string) (assets []dia.Asset, err error) {
var (
decimals sql.NullInt64
rows pgx.Rows
query string
)
if name == "" {
query = fmt.Sprintf(`
SELECT symbol,name,address,decimals,blockchain
FROM %s a
INNER JOIN %s av
ON av.asset_id=a.asset_id
WHERE av.volume>0
AND av.time_stamp IS NOT NULL
AND symbol ILIKE '%s%%'
ORDER BY av.volume DESC`,
assetTable,
assetVolumeTable,
symbol,
)
} else if symbol == "" {
query = fmt.Sprintf(`
SELECT symbol,name,address,decimals,blockchain
FROM %s a
INNER JOIN %s av
ON av.asset_id=a.asset_id
WHERE av.volume>0
AND av.time_stamp IS NOT NULL
AND name ILIKE '%s%%'
ORDER BY av.volume DESC`,
assetTable,
assetVolumeTable,
symbol,
)
} else {
query = fmt.Sprintf(`
SELECT symbol,name,address,decimals,blockchain
FROM %s a
INNER JOIN %s av
ON av.asset_id=a.asset_id
WHERE av.volume>0
AND av.time_stamp IS NOT NULL
AND (symbol ILIKE '%s%%' OR name ILIKE '%s%%')
ORDER BY av.volume DESC`,
assetTable,
assetVolumeTable,
name,
symbol,
)
}
if err != nil {
return
}
rows, err = rdb.postgresClient.Query(context.Background(), query)
log.Infoln("GetAssetsBySymbolName query", query)
defer rows.Close()
for rows.Next() {
var asset dia.Asset
err = rows.Scan(&asset.Symbol, &asset.Name, &asset.Address, &decimals, &asset.Blockchain)
if err != nil {
return
}
if decimals.Valid {
asset.Decimals = uint8(decimals.Int64)
}
assets = append(assets, asset)
}
return
}
// GetAssetsByAddress returns a (possibly multiple) dia.Asset by its address from postgres.
func (rdb *RelDB) GetAssetsByAddress(address string) (assets []dia.Asset, err error) {
var (
decimals sql.NullInt64
rows pgx.Rows
)
query := fmt.Sprintf(`
SELECT symbol,name,address,decimals,blockchain
FROM %s a
INNER JOIN %s av
ON a.asset_id=av.asset_id
WHERE av.volume>0
AND av.time_stamp IS NOT NULL
AND address ILIKE '%s%%'
ORDER BY av.volume DESC`,
assetTable,
assetVolumeTable,
address,
)
rows, err = rdb.postgresClient.Query(context.Background(), query)
if err != nil {
return
}
defer rows.Close()
for rows.Next() {
var asset dia.Asset
err = rows.Scan(&asset.Symbol, &asset.Name, &asset.Address, &decimals, &asset.Blockchain)
if err != nil {
return
}
if decimals.Valid {
asset.Decimals = uint8(decimals.Int64)
}
assets = append(assets, asset)
}
return
}
// GetFiatAssetBySymbol returns a fiat asset by its symbol. This is possible as
// fiat currencies are uniquely defined by their symbol.
func (rdb *RelDB) GetFiatAssetBySymbol(symbol string) (asset dia.Asset, err error) {
var decimals sql.NullInt64
query := fmt.Sprintf("SELECT name,address,decimals FROM %s WHERE symbol=$1 AND blockchain='Fiat'", assetTable)
err = rdb.postgresClient.QueryRow(context.Background(), query, symbol).Scan(&asset.Name, &asset.Address, &decimals)
if err != nil {
return
}
if decimals.Valid {
asset.Decimals = uint8(decimals.Int64)
}
asset.Symbol = symbol
asset.Blockchain = "Fiat"
// TO DO: Get Blockchain by name from postgres and add to asset
return
}
// IdentifyAsset looks for all assets in postgres which match the non-null fields in @asset
// Comment 1: The only critical field is @Decimals, as this is initialized with 0, while an
// asset is allowed to have zero decimals as well (for instance sngls, trxc).
// Comment 2: Should we add a preprocessing step in which notation is corrected corresponding
// to the notation in the underlying contract on the blockchain?
// Comment 3: Can we improve this? How to treat cases like CoinBase emitting symbol name
// 'Wrapped Bitcoin' instead of the correct 'Wrapped BTC', or 'United States Dollar' instead
// of 'United States dollar'? On idea would be to add a table with alternative names for
// symbol tickers, so WBTC -> [Wrapped Bitcoin, Wrapped bitcoin, Wrapped BTC,...]
func (rdb *RelDB) IdentifyAsset(asset dia.Asset) (assets []dia.Asset, err error) {
query := fmt.Sprintf("SELECT symbol,name,address,decimals,blockchain FROM %s WHERE ", assetTable)
var and string
if asset.Symbol != "" {
query += fmt.Sprintf("symbol='%s'", asset.Symbol)
and = " AND "
}
if asset.Name != "" {
query += fmt.Sprintf(and+"name='%s'", asset.Name)
and = " AND "
}
if asset.Address != "" {
query += fmt.Sprintf(and+"address='%s'", common.HexToAddress(asset.Address).Hex())
and = " AND "
}
if asset.Decimals != 0 {
query += fmt.Sprintf(and+"decimals='%d'", asset.Decimals)
and = " AND "
}
if asset.Blockchain != "" {
query += fmt.Sprintf(and+"blockchain='%s'", asset.Blockchain)
}
rows, err := rdb.postgresClient.Query(context.Background(), query)
if err != nil {
return
}
defer rows.Close()
var decimals sql.NullInt64
for rows.Next() {
asset := dia.Asset{}
err = rows.Scan(&asset.Symbol, &asset.Name, &asset.Address, &decimals, &asset.Blockchain)
if err != nil {
return
}
if decimals.Valid {
asset.Decimals = uint8(decimals.Int64)
}
assets = append(assets, asset)
}
return
}
// -------------------------------------------------------------
// exchangesymbol TABLE methods
// -------------------------------------------------------------
// SetExchangeSymbol writes unique data into exchangesymbol table if not yet in there.
func (rdb *RelDB) SetExchangeSymbol(exchange string, symbol string) error {
query := fmt.Sprintf(`
INSERT INTO %s (symbol,exchange)
SELECT $1,$2
WHERE NOT EXISTS
(SELECT 1 FROM exchangesymbol WHERE symbol=$1 AND exchange=$2)
`, exchangesymbolTable)
_, err := rdb.postgresClient.Exec(context.Background(), query, symbol, exchange)
if err != nil {
return err
}
return nil
}
func (rdb *RelDB) GetExchangeSymbol(exchange string, symbol string) (asset dia.Asset, err error) {
var decimals sql.NullInt64
query := fmt.Sprintf(`
SELECT a.symbol,a.name,a.address,a.blockchain,a.decimals
FROM %s es
INNER JOIN %s a
ON es.asset_id=a.asset_id
WHERE es.exchange=$1
AND es.symbol ILIKE $2
`,
exchangesymbolTable,
assetTable,
)
err = rdb.postgresClient.QueryRow(context.Background(), query, exchange, symbol).Scan(
&asset.Symbol,
&asset.Name,
&asset.Address,
&asset.Blockchain,
&decimals,
)
if err != nil {
return
}
if decimals.Valid {
asset.Decimals = uint8(decimals.Int64)
}
return
}
// GetAssets returns all assets which share the symbol ticker @symbol.
func (rdb *RelDB) GetAssets(symbol string) (assets []dia.Asset, err error) {
query := fmt.Sprintf("SELECT symbol,name,address,decimals,blockchain FROM %s WHERE symbol=$1 ", assetTable)
var rows pgx.Rows
rows, err = rdb.postgresClient.Query(context.Background(), query, symbol)
if err != nil {
return
}
defer rows.Close()
for rows.Next() {
var decimals sql.NullInt64
asset := dia.Asset{}
err = rows.Scan(&asset.Symbol, &asset.Name, &asset.Address, &decimals, &asset.Blockchain)
if err != nil {
return
}
if decimals.Valid {
asset.Decimals = uint8(decimals.Int64)
}
assets = append(assets, asset)
}
return
}
// GetAssetExchnage returns all assets which share the symbol ticker @symbol.
func (rdb *RelDB) GetAssetExchange(symbol string) (exchanges []string, err error) {
query := fmt.Sprintf(`
SELECT exchange
FROM %s
INNER JOIN %s
ON asset.asset_id = exchangesymbol.asset_id
WHERE exchangesymbol.symbol = $1
`, exchangesymbolTable, assetTable)
var rows pgx.Rows
rows, err = rdb.postgresClient.Query(context.Background(), query, symbol)
if err != nil {
return
}
defer rows.Close()
for rows.Next() {
var exchange string
err = rows.Scan(&exchange)
if err != nil {
return
}
exchanges = append(exchanges, exchange)
}
return
}
// GetUnverifiedExchangeSymbols returns all symbols from @exchange which haven't been verified yet.
func (rdb *RelDB) GetUnverifiedExchangeSymbols(exchange string) (symbols []string, err error) {
query := fmt.Sprintf("SELECT symbol FROM %s WHERE exchange=$1 AND verified=false ORDER BY symbol ASC", exchangesymbolTable)
var rows pgx.Rows
rows, err = rdb.postgresClient.Query(context.Background(), query, exchange)
if err != nil {
return
}
defer rows.Close()
for rows.Next() {
symbol := ""
err = rows.Scan(&symbol)
if err != nil {
return []string{}, err
}
symbols = append(symbols, symbol)
}
return
}
// GetExchangeSymbols returns all symbols traded on @exchange.
// If @exchange is the empty string, all symbols are returned.
// If @substring is not the empty string, all symbols that begin with @substring (case insensitive) are returned.
func (rdb *RelDB) GetExchangeSymbols(exchange string, substring string) (symbols []string, err error) {
var query string
var rows pgx.Rows
if exchange != "" {
if substring != "" {
query = fmt.Sprintf("SELECT symbol FROM %s WHERE exchange=$1 AND symbol ILIKE '%s%%'", exchangesymbolTable, substring)
rows, err = rdb.postgresClient.Query(context.Background(), query, exchange)
} else {
query = fmt.Sprintf("SELECT symbol FROM %s WHERE exchange=$1", exchangesymbolTable)
rows, err = rdb.postgresClient.Query(context.Background(), query, exchange)
}
} else {
if substring != "" {
query = fmt.Sprintf("SELECT symbol FROM %s WHERE symbol ILIKE '%s%%'", exchangesymbolTable, substring)
log.Info("query: ", query)
rows, err = rdb.postgresClient.Query(context.Background(), query)
} else {
query = fmt.Sprintf("SELECT symbol FROM %s", exchangesymbolTable)
rows, err = rdb.postgresClient.Query(context.Background(), query)
}
}
if err != nil {
return
}
defer rows.Close()
for rows.Next() {
symbol := ""
err = rows.Scan(&symbol)
if err != nil {
return []string{}, err
}
symbols = append(symbols, symbol)
}
return
}
// VerifyExchangeSymbol verifies @symbol on @exchange and maps it uniquely to @assetID in asset table.
// It returns true if symbol,exchange is present and succesfully updated.
func (rdb *RelDB) VerifyExchangeSymbol(exchange string, symbol string, assetID string) (bool, error) {
query := fmt.Sprintf("UPDATE %s SET verified=true,asset_id=$1 WHERE symbol=$2 AND exchange=$3", exchangesymbolTable)
resp, err := rdb.postgresClient.Exec(context.Background(), query, assetID, symbol, exchange)
if err != nil {
return false, err
}
var success bool
respSlice := strings.Split(string(resp), " ")
numUpdates := respSlice[1]
if numUpdates != "0" {
success = true
}
return success, nil
}
// GetExchangeSymbolAssetID returns the ID of the unique asset associated to @symbol on @exchange
// in case the symbol is verified. An empty string if not.
func (rdb *RelDB) GetExchangeSymbolAssetID(exchange string, symbol string) (assetID string, verified bool, err error) {
var uuid pgtype.UUID
query := fmt.Sprintf("SELECT asset_id, verified FROM %s WHERE symbol=$1 AND exchange=$2", exchangesymbolTable)
err = rdb.postgresClient.QueryRow(context.Background(), query, symbol, exchange).Scan(&uuid, &verified)
if err != nil {
return
}
val, err := uuid.Value()
if err != nil {
log.Error(err)
}
if val != nil {
assetID = val.(string)
}
return
}
// -------------------------------------------------------------
// Blockchain methods
// -------------------------------------------------------------
func (rdb *RelDB) SetBlockchain(blockchain dia.BlockChain) (err error) {
fields := fmt.Sprintf("INSERT INTO %s (name,genesisdate,nativetoken_id,verificationmechanism,chain_id) VALUES ", blockchainTable)
values := "($1,$2,(SELECT asset_id FROM asset WHERE address=$3 AND blockchain=$1),$4,NULLIF($5,'')) "
conflict := `
ON CONFLICT (name)
DO UPDATE SET
genesisdate=$2,verificationmechanism=$4,chain_id=NULLIF($5,''),nativetoken_id=(SELECT asset_id FROM asset WHERE address=$3 AND blockchain=$1)
`
query := fields + values + conflict
_, err = rdb.postgresClient.Exec(context.Background(), query,
blockchain.Name,
blockchain.GenesisDate,
blockchain.NativeToken.Address,
blockchain.VerificationMechanism,
blockchain.ChainID,
)
if err != nil {
return err
}
return nil
}
func (rdb *RelDB) GetBlockchain(name string) (blockchain dia.BlockChain, err error) {
query := fmt.Sprintf(`
SELECT genesisdate,verificationmechanism,chain_id,address,symbol
FROM %s
INNER JOIN %s
ON %s.nativetoken_id=%s.asset_id
WHERE %s.name=$1
`, blockchainTable, assetTable, blockchainTable, assetTable, blockchainTable)
err = rdb.postgresClient.QueryRow(context.Background(), query, name).Scan(
&blockchain.GenesisDate,
&blockchain.VerificationMechanism,
&blockchain.ChainID,
&blockchain.NativeToken.Address,
&blockchain.NativeToken.Symbol,
)
if err != nil {
return
}
blockchain.Name = name
return
}
// GetAllBlockchains returns all blockchains from the blockchain table.
// If fullAsset=true it returns the complete native token as asset, otherwise only its symbol string.
func (rdb *RelDB) GetAllBlockchains(fullAsset bool) ([]dia.BlockChain, error) {
var (
blockchains []dia.BlockChain
query string
)
if fullAsset {
query = fmt.Sprintf(`
SELECT b.name,b.genesisdate,a.Symbol,a.Name,a.Address,a.Decimals,b.verificationmechanism,b.chain_id
FROM %s b
LEFT JOIN %s a
ON nativetoken_id = a.asset_id
`, blockchainTable, assetTable)
} else {
query = fmt.Sprintf(`
SELECT b.name,b.genesisdate,a.Symbol,b.verificationmechanism,b.chain_id
FROM %s b
LEFT JOIN %s a
ON nativetoken_id = a.asset_id
`, blockchainTable, assetTable)
}
rows, err := rdb.postgresClient.Query(context.Background(), query)
if err != nil {
return []dia.BlockChain{}, err
}
defer rows.Close()
for rows.Next() {
var (
blockchain dia.BlockChain
genDate sql.NullFloat64
symbol sql.NullString
verifMechanism sql.NullString
chainID sql.NullString
// fullAsset
name sql.NullString
address sql.NullString
decimals sql.NullInt64
)
if fullAsset {
err = rows.Scan(
&blockchain.Name,
&genDate,
&symbol,
&name,
&address,
&decimals,
&verifMechanism,
&chainID,
)
} else {
err = rows.Scan(
&blockchain.Name,
&genDate,
&symbol,
&verifMechanism,
&chainID,
)
}
if err != nil {
return []dia.BlockChain{}, err
}
if genDate.Valid {
blockchain.GenesisDate = int64(genDate.Float64)
}
if symbol.Valid {
blockchain.NativeToken.Symbol = symbol.String
}
if verifMechanism.Valid {
blockchain.VerificationMechanism = dia.VerificationMechanism(verifMechanism.String)
}
if chainID.Valid {
blockchain.ChainID = chainID.String
}
if fullAsset {
if name.Valid {
blockchain.NativeToken.Name = name.String
}
if address.Valid {
blockchain.NativeToken.Address = address.String
}
if decimals.Valid {
blockchain.NativeToken.Decimals = uint8(decimals.Int64)
}
blockchain.NativeToken.Blockchain = blockchain.Name
}
blockchains = append(blockchains, blockchain)
}
return blockchains, nil
}
// GetAllAssetsBlockchains returns all blockchain names existent in the asset table.
func (rdb *RelDB) GetAllAssetsBlockchains() ([]string, error) {
var blockchains []string
query := fmt.Sprintf("SELECT DISTINCT blockchain FROM %s WHERE name!='' ORDER BY blockchain ASC", assetTable)
rows, err := rdb.postgresClient.Query(context.Background(), query)
if err != nil {
return []string{}, err
}
defer rows.Close()
for rows.Next() {
var blockchain string
err := rows.Scan(&blockchain)
if err != nil {
return []string{}, err
}
blockchains = append(blockchains, blockchain)
}
return blockchains, nil
}
// -------------------------------------------------------------
// General methods
// -------------------------------------------------------------
// GetPage returns assets per page number. @hasNext is true iff there is a non-empty next page.
func (rdb *RelDB) GetPage(pageNumber uint32) (assets []dia.Asset, hasNextPage bool, err error) {
pagesize := rdb.pagesize
skip := pagesize * pageNumber
rows, err := rdb.postgresClient.Query(context.Background(), "SELECT symbol,name,address,decimals,blockchain FROM asset LIMIT $1 OFFSET $2 ", pagesize, skip)
if err != nil {
return
}
defer rows.Close()
for rows.Next() {
fmt.Println("---")
var asset dia.Asset
err = rows.Scan(&asset.Symbol, &asset.Name, &asset.Address, &asset.Decimals, &asset.Blockchain)
if err != nil {
return
}
assets = append(assets, asset)
}
// Last page (or empty page)
if len(rows.RawValues()) < int(pagesize) {
hasNextPage = false
return
}
// No next page
nextPageRows, err := rdb.postgresClient.Query(context.Background(), "SELECT symbol,name,address,decimals,blockchain FROM asset LIMIT $1 OFFSET $2 ", pagesize, skip+1)
if len(nextPageRows.RawValues()) == 0 {
hasNextPage = false
return
}
defer nextPageRows.Close()
hasNextPage = true
return
}
// Count returns the number of assets stored in postgres
func (rdb *RelDB) Count() (count uint32, err error) {
err = rdb.postgresClient.QueryRow(context.Background(), "SELECT COUNT(*) FROM asset").Scan(&count)
if err != nil {
return
}
return
}
// -------------------------------------------------------------
// Caching layer
// -------------------------------------------------------------
// SetAssetCache stores @asset in redis, using its primary key in postgres as key.
// As a consequence, @asset is only cached iff it exists in postgres.
func (rdb *RelDB) SetAssetCache(asset dia.Asset) error {
return rdb.redisClient.Set(keyAssetCache+asset.Identifier(), &asset, 0).Err()
}
// GetAssetCache returns an asset by its asset_id as defined in asset table in postgres
func (rdb *RelDB) GetAssetCache(blockchain string, address string) (asset dia.Asset, err error) {
asset.Blockchain = blockchain
asset.Address = address
err = rdb.redisClient.Get(keyAssetCache + asset.Identifier()).Scan(&asset)
return
}
// CountCache returns the number of assets in the cache
func (rdb *RelDB) CountCache() (uint32, error) {
keysPattern := keyAssetCache + "*"
allAssets := rdb.redisClient.Keys(keysPattern).Val()
return uint32(len(allAssets)), nil
}
// -------------- Caching exchange pairs -------------------
// SetExchangePairCache stores @pairs in redis
func (rdb *RelDB) SetExchangePairCache(exchange string, pair dia.ExchangePair) error {
key := keyExchangePairCache + exchange + "_" + pair.ForeignName
return rdb.redisClient.Set(key, &pair, 0).Err()
}
// GetExchangePairCache returns an exchange pair by @exchange and @foreigName
func (rdb *RelDB) GetExchangePairCache(exchange string, foreignName string) (dia.ExchangePair, error) {
exchangePair := dia.ExchangePair{}
err := rdb.redisClient.Get(keyExchangePairCache + exchange + "_" + foreignName).Scan(&exchangePair)
if err != nil {
if !errors.Is(err, redis.Nil) {
log.Errorf("GetExchangePairCache on %s with foreign name %s: %v\n", exchange, foreignName, err)
}
return exchangePair, err
}
return exchangePair, nil
}
func (rdb *RelDB) SetAssetVolume24H(asset dia.Asset, volume float64, timestamp time.Time) error {
initialStr := fmt.Sprintf("INSERT INTO %s (asset_id,volume,time_stamp) VALUES ", assetVolumeTable)
substring := fmt.Sprintf(
"((SELECT asset_id FROM asset WHERE address='%s' AND blockchain='%s'),%f,to_timestamp(%v))",
asset.Address,
asset.Blockchain,
volume,
timestamp.Unix(),
)
conflict := " ON CONFLICT (asset_id) DO UPDATE SET volume=EXCLUDED.volume,time_stamp=EXCLUDED.time_stamp"
query := initialStr + substring + conflict
_, err := rdb.postgresClient.Exec(context.Background(), query)
if err != nil {
return err
}
return nil
}
func (rdb *RelDB) GetLastAssetVolume24H(asset dia.Asset) (volume float64, err error) {
query := fmt.Sprintf("SELECT volume FROM %s INNER JOIN %s ON assetvolume.asset_id = asset.asset_id WHERE address=$1 AND blockchain=$2", assetVolumeTable, assetTable)
err = rdb.postgresClient.QueryRow(context.Background(), query, asset.Address, asset.Blockchain).Scan(&volume)
return
}
func (rdb *RelDB) GetTopAssetByVolume(symbol string) (assets []dia.Asset, err error) {
query := fmt.Sprintf(`
SELECT symbol,name,address,decimals,blockchain
FROM %s
INNER JOIN %s
ON asset.asset_id = assetvolume.asset_id
WHERE symbol=$1
ORDER BY volume DESC
`, assetTable, assetVolumeTable)
var rows pgx.Rows
rows, err = rdb.postgresClient.Query(context.Background(), query, symbol)
if err != nil {
return
}
defer rows.Close()
for rows.Next() {
var decimals sql.NullInt64
asset := dia.Asset{}
err = rows.Scan(&asset.Symbol, &asset.Name, &asset.Address, &decimals, &asset.Blockchain)
if err != nil {
return
}
if decimals.Valid {
asset.Decimals = uint8(decimals.Int64)
}
assets = append(assets, asset)
}
return
}
func (rdb *RelDB) GetByLimit(limit, skip uint32) (assets []dia.Asset, assetIds []string, err error) {
rows, err := rdb.postgresClient.Query(
context.Background(),
"SELECT asset_id,symbol,name,address,decimals,blockchain FROM asset LIMIT $1 OFFSET $2",
limit,
skip,
)
if err != nil {
return
}
defer rows.Close()
for rows.Next() {
var (
decimals sql.NullInt64
assetID string
asset dia.Asset
)
err = rows.Scan(&assetID, &asset.Symbol, &asset.Name, &asset.Address, &decimals, &asset.Blockchain)
if err != nil {
return
}
if decimals.Valid {
asset.Decimals = uint8(decimals.Int64)
}
assets = append(assets, asset)
assetIds = append(assetIds, assetID)
}
return
}
// GetAssetsWithVolByBlockchain returns all assets from assetvolume table that have a timestamp in the time-range (@starttime,@endtime].
// If blockchain is a non-empty string it only returns assets from @blockchain.
func (rdb *RelDB) GetAssetsWithVolByBlockchain(starttime time.Time, endtime time.Time, blockchain string) (assets []dia.AssetVolume, err error) {
var (
query string
rows pgx.Rows
)
query = fmt.Sprintf(`
SELECT * FROM (
SELECT DISTINCT ON (address,blockchain) symbol,name,address,decimals,blockchain,volume
FROM %s
INNER JOIN %s
ON (asset.asset_id = assetvolume.asset_id)
WHERE time_stamp>to_timestamp(%v) and time_stamp<=to_timestamp(%v)`,
assetTable,
assetVolumeTable,
starttime.Unix(),
endtime.Unix(),
)
if blockchain != "" {
query += fmt.Sprintf(" AND asset.blockchain='%s')", blockchain)
} else {
query += (")")
}
query += " sub ORDER BY volume DESC"
rows, err = rdb.postgresClient.Query(context.Background(), query)
if err != nil {
return
}
defer rows.Close()
for rows.Next() {
var (
decimals sql.NullInt64
volume float64
)
asset := dia.Asset{}
err = rows.Scan(&asset.Symbol, &asset.Name, &asset.Address, &decimals, &asset.Blockchain, &volume)
if err != nil {
return
}
if decimals.Valid {
asset.Decimals = uint8(decimals.Int64)
}
assetvolume := dia.AssetVolume{Asset: asset, Volume: volume}
assets = append(assets, assetvolume)
}
return
}
// GetSortedAssetSymbols search asstet by symbol
func (rdb *RelDB) GetSortedAssetSymbols(numAssets int64, skip int64, search string) (volumeSortedAssets []dia.AssetVolume, err error) {
var (
queryString string
query string
rows pgx.Rows
)
if numAssets == 0 {
queryString = `
SELECT a.symbol,a.name,a.address,a.decimals,a.blockchain,av.volume
FROM %s
INNER JOIN %s
ON (asset.asset_id = assetvolume.asset_id)
WHERE symbol ILIKE '%s%%'
ORDER BY assetvolume.volume
DESC LIMIT 100`
query = fmt.Sprintf(queryString, assetTable, assetVolumeTable, search)
} else {
queryString = `
SELECT DISTINCT ON (av.volume,av.asset_id) a.symbol,a.name,a.address,a.decimals,a.blockchain,av.volume
FROM %s av
INNER JOIN %s a
ON av.asset_id=a.asset_id
INNER JOIN %s es
ON av.asset_id=es.asset_id INNER JOIN %s e
ON es.exchange=e.name
WHERE e.centralized=true
AND a.symbol ILIKE '%s%%'
ORDER BY av.volume