/
block.go
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/
block.go
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/*
Copyright [2019] - [2021], PERSISTENCE TECHNOLOGIES PTE. LTD. and the persistenceBridge contributors
SPDX-License-Identifier: Apache-2.0
*/
package ethereum
import (
"context"
"errors"
"fmt"
"github.com/Shopify/sarama"
"github.com/cosmos/cosmos-sdk/codec"
sdkTypes "github.com/cosmos/cosmos-sdk/types"
"github.com/ethereum/go-ethereum"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/ethclient"
"github.com/persistenceOne/persistenceBridge/application/constants"
"github.com/persistenceOne/persistenceBridge/application/db"
"github.com/persistenceOne/persistenceBridge/ethereum/abi/liquidStaking"
"github.com/persistenceOne/persistenceBridge/ethereum/abi/tokenWrapper"
"github.com/persistenceOne/persistenceBridge/ethereum/contracts"
"github.com/persistenceOne/persistenceBridge/kafka/utils"
"github.com/persistenceOne/persistenceBridge/utilities/logging"
)
const (
EventStakeTokens = "StakeTokens"
EventUnstakeTokens = "UnstakeTokens"
EventWithdrawUTokens = "WithdrawUTokens"
)
func handleBlock(client *ethclient.Client, ctx *context.Context, block *types.Block, kafkaProducer *sarama.SyncProducer, protoCodec *codec.ProtoCodec) error {
contracts.LiquidStaking.GetAddress()
logs, err := client.FilterLogs(*ctx, ethereum.FilterQuery{
//BlockHash: &ab,
FromBlock: block.Number(),
ToBlock: block.Number(),
Addresses: []common.Address{contracts.LiquidStaking.GetAddress(), contracts.TokenWrapper.GetAddress()},
Topics: [][]common.Hash{{contracts.LiquidStaking.GetABI().Events[EventStakeTokens].ID,
contracts.LiquidStaking.GetABI().Events[EventUnstakeTokens].ID,
contracts.TokenWrapper.GetABI().Events[EventWithdrawUTokens].ID}},
})
if err != nil {
return err
}
for _, vLog := range logs {
// check if log is removed
if vLog.Removed {
// Test this out somehow
// logging.Warn(fmt.Sprintf("Ethereum Reader: log was removed on Block %s, txhash: %s", block.Number(), vLog.TxHash))
continue
}
// check if txn was successful
receipt, err := client.TransactionReceipt(*ctx, vLog.TxHash)
if err != nil {
logging.Error("Unable to get receipt of tx:", vLog.TxHash.String(), "Error:", err)
return err
}
if !(receipt.Status == types.ReceiptStatusSuccessful) {
continue
}
var contract contracts.ContractI
var methodRaw string
var args []interface{}
switch vLog.Topics[0] {
case contracts.LiquidStaking.GetABI().Events[EventStakeTokens].ID:
stakeEvent, err := ParseLiquidStakingStakeTokensEvent(vLog)
if err != nil {
logging.Error("Failed to process ethereum tx:", vLog.TxHash.String(), "with err: ", err.Error())
return err
}
methodRaw = constants.LiquidStakingStake
contract = &contracts.LiquidStaking
args = []interface{}{stakeEvent.AccountAddress, stakeEvent.FinalTokens}
case contracts.LiquidStaking.GetABI().Events[EventUnstakeTokens].ID:
unstakeEvent, err := ParseLiquidStakingUnstakeTokensEvent(vLog)
if err != nil {
logging.Error("Failed to process ethereum tx:", vLog.TxHash.String(), "with err: ", err.Error())
return err
}
methodRaw = constants.LiquidStakingUnStake
contract = &contracts.LiquidStaking
args = []interface{}{unstakeEvent.AccountAddress, unstakeEvent.FinalTokens}
case contracts.TokenWrapper.GetABI().Events[EventWithdrawUTokens].ID:
withdrawUTokenEvent, err := ParseTokenWrapperWithdrawUTokensEvent(vLog)
if err != nil {
logging.Error("Failed to process ethereum tx:", vLog.TxHash.String(), "with err: ", err.Error())
return err
}
methodRaw = constants.TokenWrapperWithdrawUTokens
contract = &contracts.TokenWrapper
args = []interface{}{withdrawUTokenEvent.AccountAddress, withdrawUTokenEvent.FinalTokens, withdrawUTokenEvent.ToChainAddress}
default:
}
err = collectEthTx(protoCodec, vLog.TxHash, methodRaw, contract, args)
if err != nil {
logging.Error("Failed to process ethereum tx:", vLog.TxHash.String())
return err
}
}
produceToKafka(kafkaProducer)
return nil
}
func collectEthTx(protoCodec *codec.ProtoCodec, txHash common.Hash, methodRawName string, contract contracts.ContractI, arguments []interface{}) error {
if processFunc, ok := contract.GetSDKMsgAndSender()[methodRawName]; ok {
msg, sender, err := processFunc(arguments)
if err != nil {
return fmt.Errorf("failed to process arguments of contract: %s method: %s for TX: %s Error: %s", contract.GetName(), methodRawName, txHash.String(), err.Error())
}
// Do not check for EthereumTxToKafka exists.
if !db.CheckIncomingEthereumTxExists(txHash) {
msgBytes, err := protoCodec.MarshalInterface(msg)
if err != nil {
return err
}
err = db.AddIncomingEthereumTx(db.IncomingEthereumTx{
TxHash: txHash,
MsgBytes: msgBytes,
Sender: sender,
MsgType: sdkTypes.MsgTypeURL(msg),
})
if err != nil {
return err
}
err = db.AddEthereumTxToKafka(db.EthereumTxToKafka{
TxHash: txHash,
})
if err != nil {
return fmt.Errorf("added to IncomingEthereumTx but NOT to EthereumTxToKafka failed. Tx won't be added to kafka: %v", err)
}
}
}
return nil
}
func produceToKafka(kafkaProducer *sarama.SyncProducer) {
ethTxToKafkaList, err := db.GetAllEthereumTxToKafka()
if err != nil {
logging.Fatal(err)
}
for _, tx := range ethTxToKafkaList {
ethTxToTM, err := db.GetIncomingEthereumTx(tx.TxHash)
if err != nil {
logging.Fatal(err)
}
producer := ""
switch ethTxToTM.MsgType {
case constants.MsgSendTypeUrl:
producer = utils.MsgSend
case constants.MsgDelegateTypeUrl:
producer = utils.MsgDelegate
case constants.MsgUndelegateTypeUrl:
producer = utils.EthUnbond
default:
logging.Fatal("unknown msg type [ETH Listener]: ", ethTxToTM.MsgType)
}
logging.Info("[ETH Listener] Adding to kafka producer:", producer, "of txHash:", ethTxToTM.TxHash.String(), "msgType:", ethTxToTM.MsgType, "sender:", ethTxToTM.Sender.String())
err = utils.ProducerDeliverMessage(ethTxToTM.MsgBytes, producer, *kafkaProducer)
if err != nil {
logging.Fatal("Failed to add msg to kafka queue [ETH Listener], producer:", producer, "txHash:", ethTxToTM.TxHash.String(), "sender:", ethTxToTM.Sender.String(), "error:", err)
}
err = db.DeleteEthereumTxToKafka(ethTxToTM.TxHash)
if err != nil {
logging.Fatal(err)
}
}
}
//Helper functions
func ParseLiquidStakingStakeTokensEvent(vLog types.Log) (liquidStaking.LiquidStakingStakeTokens, error) {
var event liquidStaking.LiquidStakingStakeTokens
err := contracts.LiquidStaking.GetABI().UnpackIntoInterface(&event, EventStakeTokens, vLog.Data)
if err != nil {
return event, errors.New("failed to Unpack event StakeTokens")
}
event.Raw = vLog
event.AccountAddress = common.HexToAddress(vLog.Topics[1].Hex())
event.Tokens = vLog.Topics[2].Big()
event.FinalTokens = vLog.Topics[3].Big()
return event, nil
}
func ParseLiquidStakingUnstakeTokensEvent(vLog types.Log) (liquidStaking.LiquidStakingUnstakeTokens, error) {
var event liquidStaking.LiquidStakingUnstakeTokens
err := contracts.LiquidStaking.GetABI().UnpackIntoInterface(&event, EventUnstakeTokens, vLog.Data)
if err != nil {
return event, errors.New("failed to Unpack event UnstakeTokens")
}
event.Raw = vLog
event.AccountAddress = common.HexToAddress(vLog.Topics[1].Hex())
event.Tokens = vLog.Topics[2].Big()
event.FinalTokens = vLog.Topics[3].Big()
return event, nil
}
func ParseTokenWrapperWithdrawUTokensEvent(vLog types.Log) (tokenWrapper.TokenWrapperWithdrawUTokens, error) {
var event tokenWrapper.TokenWrapperWithdrawUTokens
err := contracts.TokenWrapper.GetABI().UnpackIntoInterface(&event, EventWithdrawUTokens, vLog.Data)
if err != nil {
return event, errors.New("failed to Unpack event WithdrawUTokens")
}
event.Raw = vLog
event.AccountAddress = common.HexToAddress(vLog.Topics[1].Hex())
event.Tokens = vLog.Topics[2].Big()
return event, nil
}