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PlatypusScraper.go
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PlatypusScraper.go
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package liquidityscrapers
import (
"math"
"math/big"
"strings"
"time"
"github.com/diadata-org/diadata/pkg/dia/scraper/exchange-scrapers/platypusfinance"
platypusAssetABI "github.com/diadata-org/diadata/pkg/dia/scraper/exchange-scrapers/platypusfinance/asset"
platypusPoolABI "github.com/diadata-org/diadata/pkg/dia/scraper/exchange-scrapers/platypusfinance/pool"
platypusTokenABI "github.com/diadata-org/diadata/pkg/dia/scraper/exchange-scrapers/platypusfinance/token"
models "github.com/diadata-org/diadata/pkg/model"
"github.com/diadata-org/diadata/pkg/utils"
"github.com/diadata-org/diadata/pkg/dia"
"github.com/ethereum/go-ethereum/accounts/abi/bind"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/ethclient"
)
const (
platypusRestDialEth = "https://api.avax.network/ext/bc/C/rpc"
platypusMasterRegV3Addr = "0x7125B4211357d7C3a90F796c956c12c681146EbB"
platypusMasterRegV2Addr = "0x68c5f4374228BEEdFa078e77b5ed93C28a2f713E"
platypusMasterRegV1Addr = "0xB0523f9F473812FB195Ee49BC7d2ab9873a98044"
)
type platypusRegistry struct {
Address common.Address
Version int
}
type PlatypusCoin struct {
Symbol string
Decimals uint8
Address string
Name string
}
// The scraper object for Platypus Finance
type PlatypusScraper struct {
RestClient *ethclient.Client
datastore *models.DB
poolChannel chan dia.Pool
doneChannel chan bool
blockchain string
exchangeName string
platypusCoins map[string]*PlatypusCoin
basePoolRegistry platypusRegistry
}
// Returns a new exchange scraper
func NewPlatypusScraper(exchange dia.Exchange, datastore *models.DB) *PlatypusScraper {
var (
restClient *ethclient.Client
err error
poolChannel = make(chan dia.Pool)
doneChannel = make(chan bool)
scraper *PlatypusScraper
)
registries := []platypusRegistry{
{Version: 3, Address: common.HexToAddress(platypusMasterRegV3Addr)},
{Version: 2, Address: common.HexToAddress(platypusMasterRegV2Addr)},
{Version: 1, Address: common.HexToAddress(platypusMasterRegV1Addr)},
}
log.Infof("init rest and ws client for %s", exchange.BlockChain.Name)
restClient, err = ethclient.Dial(utils.Getenv(strings.ToUpper(exchange.BlockChain.Name)+"_URI_REST", platypusRestDialEth))
if err != nil {
log.Fatal("init rest client: ", err)
}
scraper = &PlatypusScraper{
blockchain: exchange.BlockChain.Name,
exchangeName: exchange.Name,
RestClient: restClient,
datastore: datastore,
poolChannel: poolChannel,
doneChannel: doneChannel,
platypusCoins: make(map[string]*PlatypusCoin),
}
// // Load metadata from master registries
// for _, registry := range registries {
// err := scraper.loadPoolsAndCoins(registry)
// if err != nil {
// log.Errorf("loadPoolsAndCoins error w %s registry (v%d): %s", registry.Address.Hex(), registry.Version, err)
// }
// log.Infof("metadata loaded, now scraper have %d pools data and %d coins", len(scraper.pools.pools), len(scraper.platypusCoins))
// }
scraper.basePoolRegistry = platypusRegistry{Version: 3, Address: common.HexToAddress(platypusMasterRegV3Addr)}
go func() {
for _, registry := range registries {
scraper.fetchPools(registry)
}
scraper.doneChannel <- true
}()
return scraper
}
// Load pools and coins metadata from master registry
func (scraper *PlatypusScraper) fetchPools(registry platypusRegistry) (err error) {
log.Infof("loading master contract %s version %d and querying registry", registry.Address.Hex(), registry.Version)
contractMaster, err := platypusfinance.NewBaseMasterPlatypusCaller(registry.Address, scraper.RestClient)
if err != nil {
log.Error("NewBaseMasterPlatypusCaller: ", err)
return err
}
poolCount, err := contractMaster.PoolLength(&bind.CallOpts{})
if err != nil {
log.Error("PoolLength: ", err)
return err
}
for i := 0; i < int(poolCount.Int64()); i++ {
asset, errPoolInfo := contractMaster.PoolInfo(&bind.CallOpts{}, big.NewInt(int64(i)))
if errPoolInfo != nil {
log.Error("PoolInfo: ", errPoolInfo)
return errPoolInfo
}
pool := scraper.loadPoolData(asset.LpToken.Hex())
scraper.Pool() <- pool
}
return err
}
func (scraper *PlatypusScraper) loadPoolData(poolAddress string) (pool dia.Pool) {
var err error
contractAsset, err := platypusAssetABI.NewAssetCaller(common.HexToAddress(poolAddress), scraper.RestClient)
if err != nil {
log.Error("NewAssetCaller: ", err)
}
poolContract, err := contractAsset.Pool(&bind.CallOpts{})
if err != nil {
log.Error("Pool: ", err)
}
poolCaller, err := platypusPoolABI.NewPoolCaller(poolContract, scraper.RestClient)
if err != nil {
log.Error("NewPoolCaller: ", err)
}
poolTokenAddresses, errGetTokens := poolCaller.GetTokenAddresses(&bind.CallOpts{})
if errGetTokens != nil {
symbol, err := contractAsset.Symbol(&bind.CallOpts{})
if err != nil {
log.Error("contractAsset.Symbol: ", err)
}
log.Warnf("error calling GetTokenAddresses for %s %s asset: %s", symbol, poolAddress, errGetTokens)
}
for _, c := range poolTokenAddresses {
var (
symbol string
decimalsBig *big.Int
decimals uint8
balance *big.Int
name string
)
if c == common.HexToAddress("0x0000000000000000000000000000000000000000") {
continue
} else {
contractToken, err := platypusTokenABI.NewTokenCaller(c, scraper.RestClient)
if err != nil {
log.Error("NewTokenCaller: ", err)
continue
}
symbol, err = contractToken.Symbol(&bind.CallOpts{})
if err != nil {
log.Error("Symbol: ", err, c.Hex())
continue
}
decimalsBig, err = contractToken.Decimals(&bind.CallOpts{})
if err != nil {
log.Error("Decimals: ", err)
continue
}
decimals = uint8(decimalsBig.Uint64())
name, err = contractToken.Name(&bind.CallOpts{})
if err != nil {
log.Error("Name: ", err)
continue
}
balance, err = contractToken.BalanceOf(&bind.CallOpts{}, common.HexToAddress(poolAddress))
if err != nil {
log.Error("get balance of: ", err)
}
}
poolAsset := dia.Asset{
Address: c.Hex(),
Blockchain: scraper.blockchain,
Decimals: decimals,
Symbol: symbol,
Name: name,
}
log.Info("pool asset: ", poolAsset)
volume, _ := new(big.Float).Quo(big.NewFloat(0).SetInt(balance), new(big.Float).SetFloat64(math.Pow10(int(decimals)))).Float64()
pool.Assetvolumes = append(pool.Assetvolumes, dia.AssetVolume{
Asset: poolAsset,
Volume: volume,
})
}
// Determine USD liquidity.
if pool.SufficientNativeBalance(GLOBAL_NATIVE_LIQUIDITY_THRESHOLD) {
scraper.datastore.GetPoolLiquiditiesUSD(&pool, priceCache)
}
pool.Exchange = dia.Exchange{Name: scraper.exchangeName}
pool.Blockchain = dia.BlockChain{Name: scraper.blockchain}
pool.Address = poolAddress
pool.Time = time.Now()
return pool
}
func (scraper *PlatypusScraper) Pool() chan dia.Pool {
return scraper.poolChannel
}
func (scraper *PlatypusScraper) Done() chan bool {
return scraper.doneChannel
}