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bridge.go
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bridge.go
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// Package etc implements the bridge interfaces for etc blockchain.
package etc
import (
"math/big"
"strings"
"time"
"github.com/anyswap/CrossChain-Bridge/log"
"github.com/anyswap/CrossChain-Bridge/tokens"
"github.com/anyswap/CrossChain-Bridge/tokens/eth"
"github.com/anyswap/CrossChain-Bridge/types"
)
// Bridge etc bridge inherit from eth bridge
type Bridge struct {
*eth.Bridge
}
// NewCrossChainBridge new etc bridge
func NewCrossChainBridge(isSrc bool) *Bridge {
bridge := &Bridge{Bridge: eth.NewCrossChainBridge(isSrc)}
bridge.Inherit = bridge
return bridge
}
// SetChainAndGateway set token and gateway config
func (b *Bridge) SetChainAndGateway(chainCfg *tokens.ChainConfig, gatewayCfg *tokens.GatewayConfig) {
b.CrossChainBridgeBase.SetChainAndGateway(chainCfg, gatewayCfg)
b.VerifyChainID()
b.Init()
}
// VerifyChainID verify chain id
func (b *Bridge) VerifyChainID() {
networkID := strings.ToLower(b.ChainConfig.NetID)
targetChainID := eth.GetChainIDOfNetwork(eth.EtcNetworkAndChainIDMap, networkID)
isCustom := eth.IsCustomNetwork(networkID)
if !isCustom && targetChainID == nil {
log.Fatalf("unsupported etc network: %v", b.ChainConfig.NetID)
}
var (
chainID *big.Int
err error
)
for {
chainID, err = b.GetSignerChainID()
if err == nil {
break
}
log.Errorf("can not get gateway chainID. %v", err)
log.Println("retry query gateway", b.GatewayConfig.APIAddress)
time.Sleep(3 * time.Second)
}
if !isCustom && chainID.Cmp(targetChainID) != 0 {
log.Fatalf("gateway chainID '%v' is not '%v'", chainID, b.ChainConfig.NetID)
}
b.SignerChainID = chainID
b.Signer = types.MakeSigner("EIP155", chainID)
log.Info("VerifyChainID succeed", "networkID", networkID, "chainID", chainID)
}
// GetSignerChainID override as its networkID is different of chainID
func (b *Bridge) GetSignerChainID() (*big.Int, error) {
networkID, err := b.NetworkID()
if err != nil {
return nil, err
}
var chainID *big.Int
switch networkID.Uint64() {
case 1:
chainID = eth.EtcNetworkAndChainIDMap["mainnet"]
case 6:
chainID = eth.EtcNetworkAndChainIDMap["kotti"]
case 7:
chainID = eth.EtcNetworkAndChainIDMap["mordor"]
default:
log.Fatalf("unsupported etc network %v", networkID)
}
return chainID, nil
}