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synapse.go
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synapse.go
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package inventory
import (
"context"
"fmt"
"math/big"
"github.com/synapsecns/sanguine/services/cctp-relayer/contracts/cctp"
"github.com/ethereum/go-ethereum/accounts/abi/bind"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/common/hexutil"
"github.com/ethereum/go-ethereum/core/types"
"github.com/synapsecns/sanguine/core/metrics"
"github.com/synapsecns/sanguine/ethergo/listener"
"github.com/synapsecns/sanguine/ethergo/submitter"
"github.com/synapsecns/sanguine/services/rfq/relayer/relconfig"
"github.com/synapsecns/sanguine/services/rfq/relayer/reldb"
"go.opentelemetry.io/otel/attribute"
"go.opentelemetry.io/otel/trace"
"golang.org/x/sync/errgroup"
)
type rebalanceManagerSynapseCCTP struct {
// cfg is the config
cfg relconfig.Config
// handler is the metrics handler
handler metrics.Handler
// chainClient is an omnirpc client
chainClient submitter.ClientFetcher
// txSubmitter is the transaction submitter
txSubmitter submitter.TransactionSubmitter
// cctpContracts is the map of cctp contracts (used for rebalancing)
cctpContracts map[int]*cctp.SynapseCCTP
// relayerAddress contains the relayer address
relayerAddress common.Address
// chainListeners is the map of chain listeners for CCTP events
chainListeners map[int]listener.ContractListener
// db is the database
db reldb.Service
}
func newRebalanceManagerSynapseCCTP(cfg relconfig.Config, handler metrics.Handler, chainClient submitter.ClientFetcher, txSubmitter submitter.TransactionSubmitter, relayerAddress common.Address, db reldb.Service) *rebalanceManagerSynapseCCTP {
return &rebalanceManagerSynapseCCTP{
cfg: cfg,
handler: handler,
chainClient: chainClient,
txSubmitter: txSubmitter,
cctpContracts: make(map[int]*cctp.SynapseCCTP),
relayerAddress: relayerAddress,
chainListeners: make(map[int]listener.ContractListener),
db: db,
}
}
func (c *rebalanceManagerSynapseCCTP) Start(ctx context.Context) (err error) {
err = c.initContracts(ctx)
if err != nil {
return fmt.Errorf("could not initialize contracts: %w", err)
}
err = c.initListeners(ctx)
if err != nil {
return fmt.Errorf("could not initialize listeners: %w", err)
}
g, _ := errgroup.WithContext(ctx)
for cid := range c.cfg.Chains {
// capture func literal
chainID := cid
g.Go(func() error {
return c.listen(ctx, chainID)
})
}
err = g.Wait()
if err != nil {
return fmt.Errorf("error listening to contract: %w", err)
}
return nil
}
func (c *rebalanceManagerSynapseCCTP) initContracts(parentCtx context.Context) (err error) {
ctx, span := c.handler.Tracer().Start(parentCtx, "initContracts")
defer func(err error) {
metrics.EndSpanWithErr(span, err)
}(err)
for chainID := range c.cfg.Chains {
contractAddr, err := c.cfg.GetSynapseCCTPAddress(chainID)
if err != nil {
return fmt.Errorf("could not get cctp address: %w", err)
}
if contractAddr == "" {
span.AddEvent(fmt.Sprintf("no synapse cctp address for chain %d; skipping", chainID))
continue
}
chainClient, err := c.chainClient.GetClient(ctx, big.NewInt(int64(chainID)))
if err != nil {
return fmt.Errorf("could not get chain client: %w", err)
}
contract, err := cctp.NewSynapseCCTP(common.HexToAddress(contractAddr), chainClient)
if err != nil {
return fmt.Errorf("could not get cctp: %w", err)
}
c.cctpContracts[chainID] = contract
}
return nil
}
func (c *rebalanceManagerSynapseCCTP) initListeners(ctx context.Context) (err error) {
for chainID := range c.cfg.GetChains() {
cctpAddr, err := c.cfg.GetSynapseCCTPAddress(chainID)
if err != nil {
return fmt.Errorf("could not get cctp address: %w", err)
}
chainClient, err := c.chainClient.GetClient(ctx, big.NewInt(int64(chainID)))
if err != nil {
return fmt.Errorf("could not get chain client: %w", err)
}
initialBlock, err := c.cfg.GetCCTPStartBlock(chainID)
if err != nil {
return fmt.Errorf("could not get cctp start block: %w", err)
}
chainListener, err := listener.NewChainListener(chainClient, c.db, common.HexToAddress(cctpAddr), initialBlock, c.handler)
if err != nil {
return fmt.Errorf("could not get chain listener: %w", err)
}
c.chainListeners[chainID] = chainListener
}
return nil
}
func (c *rebalanceManagerSynapseCCTP) Execute(parentCtx context.Context, rebalance *RebalanceData) (err error) {
contract, ok := c.cctpContracts[rebalance.OriginMetadata.ChainID]
if !ok {
return fmt.Errorf("could not find cctp contract for chain %d", rebalance.OriginMetadata.ChainID)
}
ctx, span := c.handler.Tracer().Start(parentCtx, "rebalance.Execute", trace.WithAttributes(
attribute.Int("rebalance_origin", rebalance.OriginMetadata.ChainID),
attribute.Int("rebalance_dest", rebalance.DestMetadata.ChainID),
attribute.String("rebalance_amount", rebalance.Amount.String()),
))
defer func(err error) {
metrics.EndSpanWithErr(span, err)
}(err)
// perform rebalance by calling sendCircleToken()
_, err = c.txSubmitter.SubmitTransaction(ctx, big.NewInt(int64(rebalance.OriginMetadata.ChainID)), func(transactor *bind.TransactOpts) (tx *types.Transaction, err error) {
tx, err = contract.SendCircleToken(
transactor,
c.relayerAddress,
big.NewInt(int64(rebalance.DestMetadata.ChainID)),
rebalance.OriginMetadata.Addr,
rebalance.Amount,
0, // TODO: inspect
[]byte{}, // TODO: inspect
)
if err != nil {
return nil, fmt.Errorf("could not send circle token: %w", err)
}
return tx, nil
})
if err != nil {
return fmt.Errorf("could not submit CCTP rebalance: %w", err)
}
// store the rebalance in the db
model := reldb.Rebalance{
Origin: uint64(rebalance.OriginMetadata.ChainID),
Destination: uint64(rebalance.DestMetadata.ChainID),
OriginAmount: rebalance.Amount,
Status: reldb.RebalanceInitiated,
}
err = c.db.StoreRebalance(ctx, model)
if err != nil {
return fmt.Errorf("could not store rebalance: %w", err)
}
return nil
}
// nolint:cyclop
func (c *rebalanceManagerSynapseCCTP) listen(parentCtx context.Context, chainID int) (err error) {
listener, ok := c.chainListeners[chainID]
if !ok {
return fmt.Errorf("could not find listener for chain %d", chainID)
}
ethClient, err := c.chainClient.GetClient(parentCtx, big.NewInt(int64(chainID)))
if err != nil {
return fmt.Errorf("could not get chain client: %w", err)
}
cctpAddr := common.HexToAddress(c.cfg.Chains[chainID].SynapseCCTPAddress)
parser, err := cctp.NewSynapseCCTPEvents(cctpAddr, ethClient)
if err != nil {
return fmt.Errorf("could not get cctp events: %w", err)
}
err = listener.Listen(parentCtx, func(parentCtx context.Context, log types.Log) (err error) {
ctx, span := c.handler.Tracer().Start(parentCtx, "rebalance.Listen", trace.WithAttributes(
attribute.Int(metrics.ChainID, chainID),
))
defer func(err error) {
metrics.EndSpanWithErr(span, err)
}(err)
switch log.Topics[0] {
case cctp.CircleRequestSentTopic:
parsedEvent, err := parser.ParseCircleRequestSent(log)
if err != nil {
logger.Warnf("could not parse circle request sent: %v", err)
return nil
}
if parsedEvent.Sender != c.relayerAddress {
return nil
}
span.SetAttributes(
attribute.String("log_type", "CircleRequestSent"),
attribute.String("request_id", hexutil.Encode(parsedEvent.RequestID[:])),
)
// update rebalance model in db
requestIDHex := hexutil.Encode(parsedEvent.RequestID[:])
rebalanceModel := reldb.Rebalance{
RebalanceID: &requestIDHex,
Origin: uint64(chainID),
OriginTxHash: log.TxHash,
OriginTokenAddr: parsedEvent.Token,
Status: reldb.RebalancePending,
}
err = c.db.UpdateRebalance(ctx, rebalanceModel, true)
if err != nil {
logger.Warnf("could not update rebalance status: %v", err)
return nil
}
case cctp.CircleRequestFulfilledTopic:
parsedEvent, err := parser.ParseCircleRequestFulfilled(log)
if err != nil {
logger.Warnf("could not parse circle request fulfilled: %v", err)
return nil
}
if parsedEvent.Recipient != c.relayerAddress {
return nil
}
span.SetAttributes(
attribute.String("log_type", "CircleRequestFulfilled"),
attribute.String("request_id", hexutil.Encode(parsedEvent.RequestID[:])),
)
// update rebalance model in db
requestIDHex := hexutil.Encode(parsedEvent.RequestID[:])
rebalanceModel := reldb.Rebalance{
RebalanceID: &requestIDHex,
DestTxHash: log.TxHash,
Status: reldb.RebalanceCompleted,
}
err = c.db.UpdateRebalance(parentCtx, rebalanceModel, false)
if err != nil {
logger.Warnf("could not update rebalance status: %v", err)
return nil
}
default:
logger.Warnf("unknown event %s", log.Topics[0])
}
return nil
})
if err != nil {
return fmt.Errorf("could not listen to contract: %w", err)
}
return nil
}