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chain.go
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chain.go
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package ethereum
import (
"context"
"crypto/ecdsa"
"fmt"
"math/big"
"time"
"github.com/cosmos/cosmos-sdk/codec"
sdk "github.com/cosmos/cosmos-sdk/types"
transfertypes "github.com/cosmos/ibc-go/v7/modules/apps/transfer/types"
clienttypes "github.com/cosmos/ibc-go/v7/modules/core/02-client/types"
conntypes "github.com/cosmos/ibc-go/v7/modules/core/03-connection/types"
chantypes "github.com/cosmos/ibc-go/v7/modules/core/04-channel/types"
committypes "github.com/cosmos/ibc-go/v7/modules/core/23-commitment/types"
ibcexported "github.com/cosmos/ibc-go/v7/modules/core/exported"
"github.com/ethereum/go-ethereum/accounts/abi/bind"
"github.com/datachainlab/ethereum-ibc-relay-chain/pkg/client"
"github.com/datachainlab/ethereum-ibc-relay-chain/pkg/contract/ibchandler"
"github.com/datachainlab/ethereum-ibc-relay-chain/pkg/wallet"
"github.com/hyperledger-labs/yui-relayer/core"
)
type Chain struct {
config ChainConfig
pathEnd *core.PathEnd
homePath string
chainID *big.Int
codec codec.ProtoCodecMarshaler
msgEventListener core.MsgEventListener
relayerPrvKey *ecdsa.PrivateKey
client *client.ETHClient
ibcHandler *ibchandler.Ibchandler
}
var _ core.Chain = (*Chain)(nil)
func NewChain(config ChainConfig) (*Chain, error) {
id := big.NewInt(config.EthChainId)
client, err := client.NewETHClient(config.RpcAddr)
if err != nil {
return nil, err
}
key, err := wallet.GetPrvKeyFromMnemonicAndHDWPath(config.HdwMnemonic, config.HdwPath)
if err != nil {
return nil, err
}
ibcHandler, err := ibchandler.NewIbchandler(config.IBCAddress(), client)
if err != nil {
return nil, err
}
return &Chain{
config: config,
client: client,
relayerPrvKey: key,
chainID: id,
ibcHandler: ibcHandler,
}, nil
}
// Config returns ChainConfig
func (c *Chain) Config() ChainConfig {
return c.config
}
// Init ...
func (c *Chain) Init(homePath string, timeout time.Duration, codec codec.ProtoCodecMarshaler, debug bool) error {
c.homePath = homePath
c.codec = codec
return nil
}
// SetupForRelay ...
func (c *Chain) SetupForRelay(ctx context.Context) error {
return nil
}
// ChainID returns ID of the chain
func (c *Chain) ChainID() string {
return c.config.ChainId
}
// GetLatestHeight gets the chain for the latest height and returns it
func (c *Chain) LatestHeight() (ibcexported.Height, error) {
bn, err := c.client.BlockNumber(context.TODO())
if err != nil {
return nil, err
}
return clienttypes.NewHeight(0, bn), nil
}
// GetAddress returns the address of relayer
func (c *Chain) GetAddress() (sdk.AccAddress, error) {
addr := make([]byte, 20)
return addr, nil
}
// Marshaler returns the marshaler
func (c *Chain) Codec() codec.ProtoCodecMarshaler {
return c.codec
}
// Client returns the RPC client for ethereum
func (c *Chain) Client() *client.ETHClient {
return c.client
}
// SetRelayInfo sets source's path and counterparty's info to the chain
func (c *Chain) SetRelayInfo(p *core.PathEnd, _ *core.ProvableChain, _ *core.PathEnd) error {
if err := p.Validate(); err != nil {
return fmt.Errorf("path on chain %s failed to set: %w", c.ChainID(), err)
}
c.pathEnd = p
return nil
}
func (c *Chain) Path() *core.PathEnd {
return c.pathEnd
}
// RegisterMsgEventListener registers a given EventListener to the chain
func (c *Chain) RegisterMsgEventListener(listener core.MsgEventListener) {
c.msgEventListener = listener
}
// QueryClientConsensusState retrevies the latest consensus state for a client in state at a given height
func (c *Chain) QueryClientConsensusState(ctx core.QueryContext, dstClientConsHeight ibcexported.Height) (*clienttypes.QueryConsensusStateResponse, error) {
s, found, err := c.ibcHandler.GetConsensusState(c.callOptsFromQueryContext(ctx), c.pathEnd.ClientID, pbToHostHeight(dstClientConsHeight))
if err != nil {
return nil, err
} else if !found {
return nil, fmt.Errorf("client consensus not found: %v", c.pathEnd.ClientID)
}
var consensusState ibcexported.ConsensusState
if err := c.Codec().UnmarshalInterface(s, &consensusState); err != nil {
return nil, err
}
any, err := clienttypes.PackConsensusState(consensusState)
if err != nil {
return nil, err
}
return clienttypes.NewQueryConsensusStateResponse(any, nil, ctx.Height().(clienttypes.Height)), nil
}
// QueryClientState returns the client state of dst chain
// height represents the height of dst chain
func (c *Chain) QueryClientState(ctx core.QueryContext) (*clienttypes.QueryClientStateResponse, error) {
s, found, err := c.ibcHandler.GetClientState(c.callOptsFromQueryContext(ctx), c.pathEnd.ClientID)
if err != nil {
return nil, err
} else if !found {
return nil, fmt.Errorf("client not found: %v", c.pathEnd.ClientID)
}
var clientState ibcexported.ClientState
if err := c.Codec().UnmarshalInterface(s, &clientState); err != nil {
return nil, err
}
any, err := clienttypes.PackClientState(clientState)
if err != nil {
return nil, err
}
return clienttypes.NewQueryClientStateResponse(any, nil, ctx.Height().(clienttypes.Height)), nil
}
var emptyConnRes = conntypes.NewQueryConnectionResponse(
conntypes.NewConnectionEnd(
conntypes.UNINITIALIZED,
"client",
conntypes.NewCounterparty(
"client",
"connection",
committypes.NewMerklePrefix([]byte{}),
),
[]*conntypes.Version{},
0,
),
[]byte{},
clienttypes.NewHeight(0, 0),
)
// QueryConnection returns the remote end of a given connection
func (c *Chain) QueryConnection(ctx core.QueryContext) (*conntypes.QueryConnectionResponse, error) {
conn, found, err := c.ibcHandler.GetConnection(c.callOptsFromQueryContext(ctx), c.pathEnd.ConnectionID)
if err != nil {
return nil, err
} else if !found {
return emptyConnRes, nil
}
return conntypes.NewQueryConnectionResponse(connectionEndToPB(conn), nil, ctx.Height().(clienttypes.Height)), nil
}
var emptyChannelRes = chantypes.NewQueryChannelResponse(
chantypes.NewChannel(
chantypes.UNINITIALIZED,
chantypes.UNORDERED,
chantypes.NewCounterparty(
"port",
"channel",
),
[]string{},
"version",
),
[]byte{},
clienttypes.NewHeight(0, 0),
)
// QueryChannel returns the channel associated with a channelID
func (c *Chain) QueryChannel(ctx core.QueryContext) (chanRes *chantypes.QueryChannelResponse, err error) {
chann, found, err := c.ibcHandler.GetChannel(c.callOptsFromQueryContext(ctx), c.pathEnd.PortID, c.pathEnd.ChannelID)
if err != nil {
return nil, err
} else if !found {
return emptyChannelRes, nil
}
return chantypes.NewQueryChannelResponse(channelToPB(chann), nil, ctx.Height().(clienttypes.Height)), nil
}
// QueryPacketCommitment returns the packet commitment corresponding to a given sequence
func (c *Chain) QueryPacketCommitment(ctx core.QueryContext, seq uint64) (comRes *chantypes.QueryPacketCommitmentResponse, err error) {
packet, err := c.QueryPacket(ctx, seq)
if err != nil {
return nil, err
}
commitment := chantypes.CommitPacket(c.Codec(), packet)
return chantypes.NewQueryPacketCommitmentResponse(commitment, nil, ctx.Height().(clienttypes.Height)), nil
}
// QueryPacketAcknowledgementCommitment returns the acknowledgement corresponding to a given sequence
func (c *Chain) QueryPacketAcknowledgementCommitment(ctx core.QueryContext, seq uint64) (ackRes *chantypes.QueryPacketAcknowledgementResponse, err error) {
ack, err := c.QueryPacketAcknowledgement(ctx, seq)
if err != nil {
return nil, err
}
commitment := chantypes.CommitAcknowledgement(ack)
return chantypes.NewQueryPacketAcknowledgementResponse(commitment, nil, ctx.Height().(clienttypes.Height)), nil
}
// NOTE: The current implementation returns all packets, including those for that acknowledgement has already received.
// QueryPacketCommitments returns an array of packet commitments
func (c *Chain) QueryPacketCommitments(ctx core.QueryContext, offset uint64, limit uint64) (comRes *chantypes.QueryPacketCommitmentsResponse, err error) {
// WARNING: It may be slow to use in the production. Instead of it, it might be better to use an external event indexer to get all packet commitments.
packets, err := c.getAllPackets(ctx, c.pathEnd.PortID, c.pathEnd.ChannelID)
if err != nil {
return nil, err
}
var res chantypes.QueryPacketCommitmentsResponse
for _, p := range packets {
ps := chantypes.NewPacketState(c.pathEnd.PortID, c.pathEnd.ChannelID, p.Sequence, chantypes.CommitPacket(c.Codec(), p))
res.Commitments = append(res.Commitments, &ps)
}
res.Height = ctx.Height().(clienttypes.Height)
return &res, nil
}
// QueryUnrecievedPackets returns a list of unrelayed packet commitments
func (c *Chain) QueryUnrecievedPackets(ctx core.QueryContext, seqs []uint64) ([]uint64, error) {
var ret []uint64
for _, seq := range seqs {
found, err := c.ibcHandler.HasPacketReceipt(c.callOptsFromQueryContext(ctx), c.pathEnd.PortID, c.pathEnd.ChannelID, seq)
if err != nil {
return nil, err
} else if !found {
ret = append(ret, seq)
}
}
return ret, nil
}
// QueryPacketAcknowledgementCommitments returns an array of packet acks
func (c *Chain) QueryPacketAcknowledgementCommitments(ctx core.QueryContext, offset uint64, limit uint64) (comRes *chantypes.QueryPacketAcknowledgementsResponse, err error) {
// WARNING: It may be slow to use in the production. Instead of it, it might be better to use an external event indexer to get all packet acknowledgements.
acks, err := c.getAllAcknowledgements(ctx, c.pathEnd.PortID, c.pathEnd.ChannelID)
if err != nil {
return nil, err
}
var res chantypes.QueryPacketAcknowledgementsResponse
for _, a := range acks {
ps := chantypes.NewPacketState(c.pathEnd.PortID, c.pathEnd.ChannelID, a.Sequence, chantypes.CommitAcknowledgement(a.Data))
res.Acknowledgements = append(res.Acknowledgements, &ps)
}
return &res, nil
}
// QueryUnrecievedAcknowledgements returns a list of unrelayed packet acks
func (c *Chain) QueryUnrecievedAcknowledgements(ctx core.QueryContext, seqs []uint64) ([]uint64, error) {
var ret []uint64
for _, seq := range seqs {
_, found, err := c.ibcHandler.GetHashedPacketCommitment(c.callOptsFromQueryContext(ctx), c.pathEnd.PortID, c.pathEnd.ChannelID, seq)
if err != nil {
return nil, err
} else if found {
ret = append(ret, seq)
}
}
return ret, nil
}
// QueryPacket returns the packet corresponding to a sequence
func (c *Chain) QueryPacket(ctx core.QueryContext, sequence uint64) (*chantypes.Packet, error) {
return c.findPacket(ctx, c.pathEnd.PortID, c.pathEnd.ChannelID, sequence)
}
// QueryPacketAcknowledgement returns the acknowledgement corresponding to a sequence
func (c *Chain) QueryPacketAcknowledgement(ctx core.QueryContext, sequence uint64) ([]byte, error) {
return c.findAcknowledgement(ctx, c.pathEnd.PortID, c.pathEnd.ChannelID, sequence)
}
// QueryBalance returns the amount of coins in the relayer account
func (c *Chain) QueryBalance(ctx core.QueryContext, address sdk.AccAddress) (sdk.Coins, error) {
panic("not supported")
}
// QueryDenomTraces returns all the denom traces from a given chain
func (c *Chain) QueryDenomTraces(ctx core.QueryContext, offset uint64, limit uint64) (*transfertypes.QueryDenomTracesResponse, error) {
panic("not supported")
}
func (c *Chain) callOptsFromQueryContext(ctx core.QueryContext) *bind.CallOpts {
return c.CallOpts(ctx.Context(), int64(ctx.Height().GetRevisionHeight()))
}