463 lines
12 KiB
Go
463 lines
12 KiB
Go
package backendwrapper
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import (
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"context"
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"encoding/json"
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"fmt"
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"math/big"
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"reflect"
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"sync"
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"github.com/ethereum/go-ethereum"
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"github.com/ethereum/go-ethereum/common"
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gcore "github.com/ethereum/go-ethereum/core"
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"github.com/ethereum/go-ethereum/core/types"
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"github.com/ethereum/go-ethereum/event"
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"github.com/ethereum/go-ethereum/internal/ethapi"
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"github.com/ethereum/go-ethereum/log"
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"github.com/ethereum/go-ethereum/rlp"
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"github.com/ethereum/go-ethereum/rpc"
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"github.com/openrelayxyz/plugeth-utils/core"
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"github.com/openrelayxyz/plugeth-utils/restricted"
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"github.com/openrelayxyz/plugeth-utils/restricted/params"
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)
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type Backend struct {
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b ethapi.Backend
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newTxsFeed event.Feed
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newTxsOnce sync.Once
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chainFeed event.Feed
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chainOnce sync.Once
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chainHeadFeed event.Feed
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chainHeadOnce sync.Once
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chainSideFeed event.Feed
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chainSideOnce sync.Once
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logsFeed event.Feed
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logsOnce sync.Once
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pendingLogsFeed event.Feed
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pendingLogsOnce sync.Once
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removedLogsFeed event.Feed
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removedLogsOnce sync.Once
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chainConfig *params.ChainConfig
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}
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func NewBackend(b ethapi.Backend) *Backend {
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return &Backend{b: b}
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}
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func (b *Backend) SuggestGasTipCap(ctx context.Context) (*big.Int, error) {
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return b.b.SuggestGasTipCap(ctx)
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}
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func (b *Backend) ChainDb() restricted.Database {
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return &dbWrapper{b.b.ChainDb()}
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}
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func (b *Backend) ExtRPCEnabled() bool {
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return b.b.ExtRPCEnabled()
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}
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func (b *Backend) RPCGasCap() uint64 {
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return b.b.RPCGasCap()
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}
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func (b *Backend) RPCTxFeeCap() float64 {
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return b.b.RPCTxFeeCap()
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}
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func (b *Backend) UnprotectedAllowed() bool {
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return b.b.UnprotectedAllowed()
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}
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func (b *Backend) SetHead(number uint64) {
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b.b.SetHead(number)
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}
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func (b *Backend) HeaderByNumber(ctx context.Context, number int64) ([]byte, error) {
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header, err := b.b.HeaderByNumber(ctx, rpc.BlockNumber(number))
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if err != nil {
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return nil, err
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}
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return rlp.EncodeToBytes(header)
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}
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func (b *Backend) HeaderByHash(ctx context.Context, hash core.Hash) ([]byte, error) {
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header, err := b.b.HeaderByHash(ctx, common.Hash(hash))
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if err != nil {
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return nil, err
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}
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return rlp.EncodeToBytes(header)
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}
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func (b *Backend) CurrentHeader() []byte {
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ret, _ := rlp.EncodeToBytes(b.b.CurrentHeader())
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return ret
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}
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func (b *Backend) CurrentBlock() []byte {
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ret, _ := rlp.EncodeToBytes(b.b.CurrentBlock())
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return ret
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}
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func (b *Backend) BlockByNumber(ctx context.Context, number int64) ([]byte, error) {
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block, err := b.b.BlockByNumber(ctx, rpc.BlockNumber(number))
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if err != nil {
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return nil, err
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}
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return rlp.EncodeToBytes(block)
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}
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func (b *Backend) BlockByHash(ctx context.Context, hash core.Hash) ([]byte, error) {
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block, err := b.b.BlockByHash(ctx, common.Hash(hash))
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if err != nil {
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return nil, err
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}
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return rlp.EncodeToBytes(block)
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}
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func (b *Backend) GetReceipts(ctx context.Context, hash core.Hash) ([]byte, error) {
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receipts, err := b.b.GetReceipts(ctx, common.Hash(hash))
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if err != nil {
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return nil, err
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}
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return json.Marshal(receipts)
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}
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func (b *Backend) GetTd(ctx context.Context, hash core.Hash) *big.Int {
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return b.b.GetTd(ctx, common.Hash(hash))
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}
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func (b *Backend) SendTx(ctx context.Context, signedTx []byte) error {
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tx := new(types.Transaction)
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if err := tx.UnmarshalBinary(signedTx); err != nil {
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return err
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}
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return b.b.SendTx(ctx, tx)
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}
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func (b *Backend) GetTransaction(ctx context.Context, txHash core.Hash) ([]byte, core.Hash, uint64, uint64, error) { // RLP Encoded transaction {
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tx, blockHash, blockNumber, index, err := b.b.GetTransaction(ctx, common.Hash(txHash))
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if err != nil {
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return nil, core.Hash(blockHash), blockNumber, index, err
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}
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enc, err := tx.MarshalBinary()
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return enc, core.Hash(blockHash), blockNumber, index, err
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}
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func (b *Backend) GetPoolTransactions() ([][]byte, error) {
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txs, err := b.b.GetPoolTransactions()
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if err != nil {
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return nil, err
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}
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results := make([][]byte, len(txs))
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for i, tx := range txs {
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results[i], _ = rlp.EncodeToBytes(tx)
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}
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return results, nil
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}
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func (b *Backend) GetPoolTransaction(txHash core.Hash) []byte {
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tx := b.b.GetPoolTransaction(common.Hash(txHash))
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if tx == nil {
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return []byte{}
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}
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enc, _ := rlp.EncodeToBytes(tx)
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return enc
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}
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func (b *Backend) GetPoolNonce(ctx context.Context, addr core.Address) (uint64, error) {
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return b.b.GetPoolNonce(ctx, common.Address(addr))
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}
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func (b *Backend) Stats() (pending int, queued int) {
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return b.b.Stats()
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}
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func (b *Backend) TxPoolContent() (map[core.Address][][]byte, map[core.Address][][]byte) {
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pending, queued := b.b.TxPoolContent()
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trpending, trqueued := make(map[core.Address][][]byte), make(map[core.Address][][]byte)
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for k, v := range pending {
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trpending[core.Address(k)] = make([][]byte, len(v))
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for i, tx := range v {
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trpending[core.Address(k)][i], _ = tx.MarshalBinary()
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}
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}
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for k, v := range queued {
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trqueued[core.Address(k)] = make([][]byte, len(v))
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for i, tx := range v {
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trpending[core.Address(k)][i], _ = tx.MarshalBinary()
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}
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}
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return trpending, trqueued
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} // RLP encoded transactions
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func (b *Backend) BloomStatus() (uint64, uint64) {
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return b.b.BloomStatus()
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}
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func (b *Backend) GetLogs(ctx context.Context, blockHash core.Hash) ([][]byte, error) {
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header, _ := b.b.HeaderByHash(ctx, common.Hash(blockHash))
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logs, err := b.b.GetLogs(ctx, common.Hash(blockHash), uint64(header.Number.Uint64()))
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if err != nil {
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return nil, err
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}
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encLogs := make([][]byte, len(logs))
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for i, log := range logs {
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encLogs[i], _ = rlp.EncodeToBytes(log)
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}
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return encLogs, nil
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} // []RLP encoded logs
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type dli interface {
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SyncProgress() ethereum.SyncProgress
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}
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type dl struct {
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dl dli
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}
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type progress struct {
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p ethereum.SyncProgress
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}
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func (p *progress) StartingBlock() uint64 {
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return p.p.StartingBlock
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}
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func (p *progress) CurrentBlock() uint64 {
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return p.p.CurrentBlock
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}
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func (p *progress) HighestBlock() uint64 {
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return p.p.HighestBlock
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}
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func (p *progress) PulledStates() uint64 {
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log.Warn("PulledStates is no longer supported by Geth")
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return 0
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}
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func (p *progress) KnownStates() uint64 {
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log.Warn("KnownStates is no longer supported by Geth")
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return 0
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}
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func (p *progress) SyncedAccounts() uint64 {
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return p.p.SyncedAccounts
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}
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func (p *progress) SyncedAccountBytes() uint64 {
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return p.p.SyncedAccountBytes
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}
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func (p *progress) SyncedBytecodes() uint64 {
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return p.p.SyncedBytecodes
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}
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func (p *progress) SyncedBytecodeBytes() uint64 {
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return p.p.SyncedBytecodeBytes
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}
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func (p *progress) SyncedStorage() uint64 {
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return p.p.SyncedStorage
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}
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func (p *progress) SyncedStorageBytes() uint64 {
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return p.p.SyncedStorageBytes
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}
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func (p *progress) HealedTrienodes() uint64 {
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return p.p.HealedTrienodes
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}
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func (p *progress) HealedTrienodeBytes() uint64 {
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return p.p.HealedTrienodeBytes
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}
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func (p *progress) HealedBytecodes() uint64 {
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return p.p.HealedBytecodes
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}
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func (p *progress) HealedBytecodeBytes() uint64 {
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return p.p.HealedBytecodeBytes
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}
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func (p *progress) HealingTrienodes() uint64 {
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return p.p.HealingTrienodes
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}
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func (p *progress) HealingBytecode() uint64 {
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return p.p.HealingBytecode
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}
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func (d *dl) Progress() core.Progress {
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return &progress{d.dl.SyncProgress()}
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}
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func (b *Backend) Downloader() core.Downloader {
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return &dl{b.b}
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}
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func (b *Backend) SubscribeNewTxsEvent(ch chan<- core.NewTxsEvent) core.Subscription {
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var sub event.Subscription
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b.newTxsOnce.Do(func() {
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bch := make(chan gcore.NewTxsEvent, 100)
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sub = b.b.SubscribeNewTxsEvent(bch)
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go func() {
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for {
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select {
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case item := <-bch:
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txe := core.NewTxsEvent{
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Txs: make([][]byte, len(item.Txs)),
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}
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for i, tx := range item.Txs {
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txe.Txs[i], _ = tx.MarshalBinary()
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}
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b.newTxsFeed.Send(txe)
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case err := <-sub.Err():
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log.Warn("Subscription error for NewTxs", "err", err)
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return
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}
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}
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}()
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})
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return b.newTxsFeed.Subscribe(ch)
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}
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func (b *Backend) SubscribeChainEvent(ch chan<- core.ChainEvent) core.Subscription {
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var sub event.Subscription
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b.chainOnce.Do(func() {
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bch := make(chan gcore.ChainEvent, 100)
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sub = b.b.SubscribeChainEvent(bch)
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go func() {
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for {
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select {
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case item := <-bch:
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ce := core.ChainEvent{
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Hash: core.Hash(item.Hash),
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}
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ce.Block, _ = rlp.EncodeToBytes(item.Block)
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ce.Logs, _ = rlp.EncodeToBytes(item.Logs)
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b.chainFeed.Send(ce)
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case err := <-sub.Err():
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log.Warn("Subscription error for Chain", "err", err)
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return
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}
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}
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}()
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})
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return b.chainFeed.Subscribe(ch)
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}
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func (b *Backend) SubscribeChainHeadEvent(ch chan<- core.ChainHeadEvent) core.Subscription {
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var sub event.Subscription
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b.chainHeadOnce.Do(func() {
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bch := make(chan gcore.ChainHeadEvent, 100)
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sub = b.b.SubscribeChainHeadEvent(bch)
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go func() {
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for {
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select {
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case item := <-bch:
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che := core.ChainHeadEvent{}
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che.Block, _ = rlp.EncodeToBytes(item.Block)
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b.chainHeadFeed.Send(che)
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case err := <-sub.Err():
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log.Warn("Subscription error for ChainHead", "err", err)
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return
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}
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}
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}()
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})
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return b.chainHeadFeed.Subscribe(ch)
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}
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func (b *Backend) SubscribeChainSideEvent(ch chan<- core.ChainSideEvent) core.Subscription {
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var sub event.Subscription
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b.chainSideOnce.Do(func() {
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bch := make(chan gcore.ChainSideEvent, 100)
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sub = b.b.SubscribeChainSideEvent(bch)
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go func() {
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for {
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select {
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case item := <-bch:
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cse := core.ChainSideEvent{}
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cse.Block, _ = rlp.EncodeToBytes(item.Block)
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b.chainSideFeed.Send(cse)
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case err := <-sub.Err():
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log.Warn("Subscription error for ChainSide", "err", err)
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return
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}
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}
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}()
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})
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return b.chainSideFeed.Subscribe(ch)
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}
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func (b *Backend) SubscribeLogsEvent(ch chan<- [][]byte) core.Subscription {
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var sub event.Subscription
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b.logsOnce.Do(func() {
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bch := make(chan []*types.Log, 100)
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sub = b.b.SubscribeLogsEvent(bch)
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go func() {
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for {
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select {
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case item := <-bch:
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logs := make([][]byte, len(item))
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for i, log := range item {
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logs[i], _ = rlp.EncodeToBytes(log)
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}
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b.logsFeed.Send(logs)
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case err := <-sub.Err():
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log.Warn("Subscription error for Logs", "err", err)
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return
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}
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}
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}()
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})
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return b.logsFeed.Subscribe(ch)
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} // []RLP encoded logs
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func (b *Backend) SubscribePendingLogsEvent(ch chan<- [][]byte) core.Subscription {
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var sub event.Subscription
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b.pendingLogsOnce.Do(func() {
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bch := make(chan []*types.Log, 100)
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sub = b.b.SubscribePendingLogsEvent(bch)
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go func() {
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for {
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select {
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case item := <-bch:
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logs := make([][]byte, len(item))
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for i, log := range item {
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logs[i], _ = rlp.EncodeToBytes(log)
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}
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b.pendingLogsFeed.Send(logs)
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case err := <-sub.Err():
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log.Warn("Subscription error for PendingLogs", "err", err)
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return
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}
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}
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}()
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})
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return b.pendingLogsFeed.Subscribe(ch)
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} // RLP Encoded logs
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func (b *Backend) SubscribeRemovedLogsEvent(ch chan<- []byte) core.Subscription {
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var sub event.Subscription
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b.removedLogsOnce.Do(func() {
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bch := make(chan gcore.RemovedLogsEvent, 100)
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sub = b.b.SubscribeRemovedLogsEvent(bch)
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go func() {
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for {
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select {
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case item := <-bch:
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logs := make([][]byte, len(item.Logs))
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for i, log := range item.Logs {
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logs[i], _ = rlp.EncodeToBytes(log)
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}
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b.removedLogsFeed.Send(item)
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case err := <-sub.Err():
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log.Warn("Subscription error for RemovedLogs", "err", err)
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return
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}
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}
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}()
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})
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return b.removedLogsFeed.Subscribe(ch)
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} // RLP encoded logs
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func convertAndSet(a, b reflect.Value) (err error) {
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defer func() {
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if recover() != nil {
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fmt.Errorf("error converting: %v", err.Error())
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}
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}()
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a.Set(b.Convert(a.Type()))
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return nil
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}
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func (b *Backend) ChainConfig() *params.ChainConfig {
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// We're using the reflect library to copy data from params.ChainConfig to
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// pparams.ChainConfig, so this function shouldn't need to be touched for
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// simple changes to ChainConfig (though pparams.ChainConfig may need to be
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// updated). Note that this probably won't carry over consensus engine data.
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if b.chainConfig != nil {
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return b.chainConfig
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}
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b.chainConfig = ¶ms.ChainConfig{}
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nval := reflect.ValueOf(b.b.ChainConfig())
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ntype := nval.Elem().Type()
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lval := reflect.ValueOf(b.chainConfig)
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for i := 0; i < nval.Elem().NumField(); i++ {
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field := ntype.Field(i)
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v := nval.Elem().FieldByName(field.Name)
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lv := lval.Elem().FieldByName(field.Name)
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log.Info("Checking value for", "field", field.Name)
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if lv.Kind() != reflect.Invalid {
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// If core.ChainConfig doesn't have this field, skip it.
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if v.Type() == lv.Type() && lv.CanSet() {
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lv.Set(v)
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} else {
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convertAndSet(lv, v)
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}
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}
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}
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return b.chainConfig
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}
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