modifications made in service of block tracer

cmd/geth/main.go

@@ -41,7 +41,7 @@ import (
 	"github.com/ethereum/go-ethereum/metrics"
 	"github.com/ethereum/go-ethereum/node"
 	"github.com/ethereum/go-ethereum/plugins"
-	"github.com/ethereum/go-ethereum/plugins/wrappers"
+	"github.com/ethereum/go-ethereum/plugins/wrappers/backendwrapper"
 	"gopkg.in/urfave/cli.v1"
 )
 
@@ -307,7 +307,9 @@ func prepare(ctx *cli.Context) {
 // It creates a default node based on the command line arguments and runs it in
 // blocking mode, waiting for it to be shut down.
 func geth(ctx *cli.Context) error {
-	if err := plugins.Initialize(path.Join(ctx.GlobalString(utils.DataDirFlag.Name), "plugins"), ctx); err != nil { return err }
+	if err := plugins.Initialize(path.Join(ctx.GlobalString(utils.DataDirFlag.Name), "plugins"), ctx); err != nil {
+		return err
+	}
 	prepare(ctx)
 	if !plugins.ParseFlags(ctx.Args()) {
 		if args := ctx.Args(); len(args) > 0 {
@@ -315,7 +317,7 @@ func geth(ctx *cli.Context) error {
 		}
 	}
 	stack, backend := makeFullNode(ctx)
-	wrapperBackend := wrappers.NewBackend(backend)
+	wrapperBackend := backendwrapper.NewBackend(backend)
 	pluginsInitializeNode(stack, wrapperBackend)
 	if ok, err := plugins.RunSubcommand(ctx); ok {
 		stack.Close()

core/plugin_hooks.go

@@ -3,10 +3,16 @@ package core
 import (
 	"encoding/json"
 	"math/big"
-  "github.com/ethereum/go-ethereum/core/types"
+	"reflect"
+	"time"
+
 	"github.com/ethereum/go-ethereum/common"
-  "github.com/ethereum/go-ethereum/plugins"
+	"github.com/ethereum/go-ethereum/core/state"
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/core/vm"
 	"github.com/ethereum/go-ethereum/log"
+	"github.com/ethereum/go-ethereum/plugins"
+	"github.com/ethereum/go-ethereum/plugins/wrappers"
 	"github.com/ethereum/go-ethereum/rlp"
 	"github.com/openrelayxyz/plugeth-utils/core"
 )
@@ -104,8 +110,6 @@ func pluginPostProcessBlock(block *types.Block) {
 	}
 	PluginPostProcessBlock(plugins.DefaultPluginLoader, block)
 }
-
-
 func PluginNewHead(pl *plugins.PluginLoader, block *types.Block, hash common.Hash, logs []*types.Log, td *big.Int) {
 	fnList := pl.Lookup("NewHead", func(item interface{}) bool {
 		_, ok := item.(func([]byte, core.Hash, [][]byte, *big.Int))
@@ -180,3 +184,103 @@ func pluginReorg(commonBlock *types.Block, oldChain, newChain types.Blocks) {
 	}
 	PluginReorg(plugins.DefaultPluginLoader, commonBlock, oldChain, newChain)
 }
+
+type metaTracer struct {
+	tracers []core.BlockTracer
+}
+
+func (mt *metaTracer) PreProcessBlock(block *types.Block) {
+	blockHash := core.Hash(block.Hash())
+	blockNumber := block.NumberU64()
+	encoded, _ := rlp.EncodeToBytes(block)
+	for _, tracer := range mt.tracers {
+		tracer.PreProcessBlock(blockHash, blockNumber, encoded)
+	}
+}
+func (mt *metaTracer) PreProcessTransaction(tx *types.Transaction, block *types.Block, i int) {
+	blockHash := core.Hash(block.Hash())
+	transactionHash := core.Hash(tx.Hash())
+	for _, tracer := range mt.tracers {
+		tracer.PreProcessTransaction(transactionHash, blockHash, i)
+	}
+}
+func (mt *metaTracer) BlockProcessingError(tx *types.Transaction, block *types.Block, err error) {
+	blockHash := core.Hash(block.Hash())
+	transactionHash := core.Hash(tx.Hash())
+	for _, tracer := range mt.tracers {
+		tracer.BlockProcessingError(transactionHash, blockHash, err)
+	}
+}
+func (mt *metaTracer) PostProcessTransaction(tx *types.Transaction, block *types.Block, i int, receipt *types.Receipt) {
+	blockHash := core.Hash(block.Hash())
+	transactionHash := core.Hash(tx.Hash())
+	receiptBytes, _ := json.Marshal(receipt)
+	for _, tracer := range mt.tracers {
+		tracer.PostProcessTransaction(transactionHash, blockHash, i, receiptBytes)
+	}
+}
+func (mt *metaTracer) PostProcessBlock(block *types.Block) {
+	blockHash := core.Hash(block.Hash())
+	for _, tracer := range mt.tracers {
+		tracer.PostProcessBlock(blockHash)
+	}
+}
+func (mt *metaTracer) CaptureStart(env *vm.EVM, from common.Address, to common.Address, create bool, input []byte, gas uint64, value *big.Int) {
+	for _, tracer := range mt.tracers {
+		tracer.CaptureStart(core.Address(from), core.Address(to), create, input, gas, value)
+	}
+}
+func (mt *metaTracer) CaptureState(env *vm.EVM, pc uint64, op vm.OpCode, gas, cost uint64, scope *vm.ScopeContext, rData []byte, depth int, err error) {
+	for _, tracer := range mt.tracers {
+		tracer.CaptureState(pc, core.OpCode(op), gas, cost, wrappers.NewWrappedScopeContext(scope), rData, depth, err)
+	}
+}
+func (mt *metaTracer) CaptureFault(env *vm.EVM, pc uint64, op vm.OpCode, gas, cost uint64, scope *vm.ScopeContext, depth int, err error) {
+	for _, tracer := range mt.tracers {
+		tracer.CaptureFault(pc, core.OpCode(op), gas, cost, wrappers.NewWrappedScopeContext(scope), depth, err)
+	}
+}
+func (mt *metaTracer) CaptureEnd(output []byte, gasUsed uint64, t time.Duration, err error) {
+	for _, tracer := range mt.tracers {
+		tracer.CaptureEnd(output, gasUsed, t, err)
+	}
+}
+
+func (mt *metaTracer) CaptureEnter(typ vm.OpCode, from common.Address, to common.Address, input []byte, gas uint64, value *big.Int) {
+	for _, tracer := range mt.tracers {
+		tracer.CaptureEnter(core.OpCode(typ), core.Address(from), core.Address(to), input, gas, value)
+	}
+}
+
+func (mt *metaTracer) CaptureExit(output []byte, gasUsed uint64, err error) {
+	for _, tracer := range mt.tracers {
+		tracer.CaptureExit(output, gasUsed, err)
+	}
+}
+
+func PluginGetBlockTracer(pl *plugins.PluginLoader, hash common.Hash, statedb *state.StateDB) *metaTracer {
+	//look for a function that takes whatever the ctx provides and statedb and returns a core.blocktracer append into meta tracer
+	log.Info("in pluginGetLiveTracer")
+	tracerList := plugins.Lookup("GetLiveTracer", func(item interface{}) bool {
+		_, ok := item.(func(core.Hash, core.StateDB) core.BlockTracer)
+		log.Info("Item is LiveTracer", "ok", ok, "type", reflect.TypeOf(item))
+		return ok
+	})
+	mt := &metaTracer{tracers: []core.BlockTracer{}}
+	for _, tracer := range tracerList {
+		if v, ok := tracer.(func(core.Hash, core.StateDB) core.BlockTracer); ok {
+			bt := v(core.Hash(hash), wrappers.NewWrappedStateDB(statedb))
+			if bt != nil {
+				mt.tracers = append(mt.tracers, bt)
+			}
+		}
+	}
+	return mt
+}
+func pluginGetBlockTracer(hash common.Hash, statedb *state.StateDB) *metaTracer {
+	if plugins.DefaultPluginLoader == nil {
+		log.Warn("Attempting GetBlockTracer, but default PluginLoader has not been initialized")
+		return nil
+	}
+	return PluginGetBlockTracer(plugins.DefaultPluginLoader, hash, statedb)
+}

core/state_processor.go

@@ -71,29 +71,38 @@ func (p *StateProcessor) Process(block *types.Block, statedb *state.StateDB, cfg
 		misc.ApplyDAOHardFork(statedb)
 	}
 	blockContext := NewEVMBlockContext(header, p.bc, nil)
+	blockTracer := pluginGetBlockTracer(header.Hash(), statedb)
+	cfg.Tracer = blockTracer
+	cfg.Debug = true
 	vmenv := vm.NewEVM(blockContext, vm.TxContext{}, statedb, p.config, cfg)
 	// Iterate over and process the individual transactions
 	pluginPreProcessBlock(block)
+	blockTracer.PreProcessBlock(block)
 	for i, tx := range block.Transactions() {
 		msg, err := tx.AsMessage(types.MakeSigner(p.config, header.Number), header.BaseFee)
 		if err != nil {
 			pluginBlockProcessingError(tx, block, err)
+			blockTracer.BlockProcessingError(tx, block, err)
 			return nil, nil, 0, fmt.Errorf("could not apply tx %d [%v]: %w", i, tx.Hash().Hex(), err)
 		}
 		statedb.Prepare(tx.Hash(), i)
 		pluginPreProcessTransaction(tx, block, i)
+		blockTracer.PreProcessTransaction(tx, block, i)
 		receipt, err := applyTransaction(msg, p.config, p.bc, nil, gp, statedb, blockNumber, blockHash, tx, usedGas, vmenv)
 		if err != nil {
 			pluginBlockProcessingError(tx, block, err)
+			blockTracer.BlockProcessingError(tx, block, err)
 			return nil, nil, 0, fmt.Errorf("could not apply tx %d [%v]: %w", i, tx.Hash().Hex(), err)
 		}
 		pluginPostProcessTransaction(tx, block, i, receipt)
+		blockTracer.PostProcessTransaction(tx, block, i, receipt)
 		receipts = append(receipts, receipt)
 		allLogs = append(allLogs, receipt.Logs...)
 	}
 	// Finalize the block, applying any consensus engine specific extras (e.g. block rewards)
 	p.engine.Finalize(p.bc, header, statedb, block.Transactions(), block.Uncles())
 	pluginPostProcessBlock(block)
+	blockTracer.PostProcessBlock(block)
 	return receipts, allLogs, *usedGas, nil
 }
 

eth/backend.go

@@ -188,7 +188,6 @@ func New(stack *node.Node, config *ethconfig.Config) (*Ethereum, error) {
 			Preimages:           config.Preimages,
 		}
 	)
-	pluginUpdateBlockchainVMConfig(&vmConfig)
 	eth.blockchain, err = core.NewBlockChain(chainDb, cacheConfig, chainConfig, eth.engine, vmConfig, eth.shouldPreserve, &config.TxLookupLimit)
 	if err != nil {
 		return nil, err

eth/plugin_hooks.go

@@ -1,74 +0,0 @@
-package eth
-
-import (
-	"math/big"
-	"reflect"
-	"time"
-
-	"github.com/ethereum/go-ethereum/common"
-	"github.com/ethereum/go-ethereum/core/vm"
-	"github.com/ethereum/go-ethereum/log"
-	"github.com/ethereum/go-ethereum/plugins"
-	"github.com/ethereum/go-ethereum/plugins/wrappers"
-	"github.com/openrelayxyz/plugeth-utils/core"
-)
-
-type metaTracer struct {
-	tracers []core.TracerResult
-}
-
-func (mt *metaTracer) CaptureStart(env *vm.EVM, from common.Address, to common.Address, create bool, input []byte, gas uint64, value *big.Int) {
-	for _, tracer := range mt.tracers {
-		tracer.CaptureStart(core.Address(from), core.Address(to), create, input, gas, value)
-	}
-}
-func (mt *metaTracer) CaptureState(env *vm.EVM, pc uint64, op vm.OpCode, gas, cost uint64, scope *vm.ScopeContext, rData []byte, depth int, err error) {
-	for _, tracer := range mt.tracers {
-		tracer.CaptureState(pc, core.OpCode(op), gas, cost, wrappers.NewWrappedScopeContext(scope), rData, depth, err)
-	}
-}
-func (mt *metaTracer) CaptureFault(env *vm.EVM, pc uint64, op vm.OpCode, gas, cost uint64, scope *vm.ScopeContext, depth int, err error) {
-	for _, tracer := range mt.tracers {
-		tracer.CaptureFault(pc, core.OpCode(op), gas, cost, wrappers.NewWrappedScopeContext(scope), depth, err)
-	}
-}
-func (mt *metaTracer) CaptureEnd(output []byte, gasUsed uint64, t time.Duration, err error) {
-	for _, tracer := range mt.tracers {
-		tracer.CaptureEnd(output, gasUsed, t, err)
-	}
-}
-// TODO: Align these with PluGeth-utils
-func (mt *metaTracer) CaptureEnter(vm.OpCode, common.Address, common.Address, []byte, uint64, *big.Int) {}
-func (mt *metaTracer) CaptureExit([]byte, uint64, error) {}
-
-func PluginUpdateBlockchainVMConfig(pl *plugins.PluginLoader, cfg *vm.Config) {
-	tracerList := plugins.Lookup("LiveTracer", func(item interface{}) bool {
-		_, ok := item.(core.TracerResult)
-		log.Info("Item is LiveTracer", "ok", ok, "type", reflect.TypeOf(item))
-		return ok
-	})
-	if len(tracerList) > 0 {
-		mt := &metaTracer{tracers: []core.TracerResult{}}
-		for _, tracer := range tracerList {
-			if v, ok := tracer.(core.TracerResult); ok {
-				log.Info("LiveTracer registered")
-				mt.tracers = append(mt.tracers, v)
-			} else {
-				log.Info("Item is not tracer")
-			}
-		}
-		cfg.Debug = true
-		cfg.Tracer = mt
-	} else {
-		log.Warn("Module is not tracer")
-	}
-
-}
-
-func pluginUpdateBlockchainVMConfig(cfg *vm.Config) {
-	if plugins.DefaultPluginLoader == nil {
-		log.Warn("Attempting CreateConsensusEngine, but default PluginLoader has not been initialized")
-		return
-	}
-	PluginUpdateBlockchainVMConfig(plugins.DefaultPluginLoader, cfg)
-}

plugins/wrappers/backendwrapper/backendwrapper.go

@@ -0,0 +1,422 @@
+package backendwrapper
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"math/big"
+	"reflect"
+	"sync"
+
+	"github.com/ethereum/go-ethereum"
+	"github.com/ethereum/go-ethereum/common"
+	gcore "github.com/ethereum/go-ethereum/core"
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/event"
+	"github.com/ethereum/go-ethereum/internal/ethapi"
+	"github.com/ethereum/go-ethereum/log"
+
+	"github.com/ethereum/go-ethereum/rlp"
+	"github.com/ethereum/go-ethereum/rpc"
+	"github.com/openrelayxyz/plugeth-utils/core"
+	"github.com/openrelayxyz/plugeth-utils/restricted"
+	"github.com/openrelayxyz/plugeth-utils/restricted/params"
+)
+
+type Backend struct {
+	b               ethapi.Backend
+	newTxsFeed      event.Feed
+	newTxsOnce      sync.Once
+	chainFeed       event.Feed
+	chainOnce       sync.Once
+	chainHeadFeed   event.Feed
+	chainHeadOnce   sync.Once
+	chainSideFeed   event.Feed
+	chainSideOnce   sync.Once
+	logsFeed        event.Feed
+	logsOnce        sync.Once
+	pendingLogsFeed event.Feed
+	pendingLogsOnce sync.Once
+	removedLogsFeed event.Feed
+	removedLogsOnce sync.Once
+	chainConfig     *params.ChainConfig
+}
+
+func NewBackend(b ethapi.Backend) *Backend {
+	return &Backend{b: b}
+}
+
+func (b *Backend) SuggestGasTipCap(ctx context.Context) (*big.Int, error) {
+	return b.b.SuggestGasTipCap(ctx)
+}
+func (b *Backend) ChainDb() restricted.Database {
+	return &dbWrapper{b.b.ChainDb()}
+}
+func (b *Backend) ExtRPCEnabled() bool {
+	return b.b.ExtRPCEnabled()
+}
+func (b *Backend) RPCGasCap() uint64 {
+	return b.b.RPCGasCap()
+}
+func (b *Backend) RPCTxFeeCap() float64 {
+	return b.b.RPCTxFeeCap()
+}
+func (b *Backend) UnprotectedAllowed() bool {
+	return b.b.UnprotectedAllowed()
+}
+func (b *Backend) SetHead(number uint64) {
+	b.b.SetHead(number)
+}
+func (b *Backend) HeaderByNumber(ctx context.Context, number int64) ([]byte, error) {
+	header, err := b.b.HeaderByNumber(ctx, rpc.BlockNumber(number))
+	if err != nil {
+		return nil, err
+	}
+	return rlp.EncodeToBytes(header)
+}
+func (b *Backend) HeaderByHash(ctx context.Context, hash core.Hash) ([]byte, error) {
+	header, err := b.b.HeaderByHash(ctx, common.Hash(hash))
+	if err != nil {
+		return nil, err
+	}
+	return rlp.EncodeToBytes(header)
+}
+func (b *Backend) CurrentHeader() []byte {
+	ret, _ := rlp.EncodeToBytes(b.b.CurrentHeader())
+	return ret
+}
+func (b *Backend) CurrentBlock() []byte {
+	ret, _ := rlp.EncodeToBytes(b.b.CurrentBlock())
+	return ret
+}
+func (b *Backend) BlockByNumber(ctx context.Context, number int64) ([]byte, error) {
+	block, err := b.b.BlockByNumber(ctx, rpc.BlockNumber(number))
+	if err != nil {
+		return nil, err
+	}
+	return rlp.EncodeToBytes(block)
+}
+func (b *Backend) BlockByHash(ctx context.Context, hash core.Hash) ([]byte, error) {
+	block, err := b.b.BlockByHash(ctx, common.Hash(hash))
+	if err != nil {
+		return nil, err
+	}
+	return rlp.EncodeToBytes(block)
+}
+func (b *Backend) GetReceipts(ctx context.Context, hash core.Hash) ([]byte, error) {
+	receipts, err := b.b.GetReceipts(ctx, common.Hash(hash))
+	if err != nil {
+		return nil, err
+	}
+	return json.Marshal(receipts)
+}
+func (b *Backend) GetTd(ctx context.Context, hash core.Hash) *big.Int {
+	return b.b.GetTd(ctx, common.Hash(hash))
+}
+func (b *Backend) SendTx(ctx context.Context, signedTx []byte) error {
+	tx := new(types.Transaction)
+	if err := tx.UnmarshalBinary(signedTx); err != nil {
+		return err
+	}
+	return b.b.SendTx(ctx, tx)
+}
+func (b *Backend) GetTransaction(ctx context.Context, txHash core.Hash) ([]byte, core.Hash, uint64, uint64, error) { // RLP Encoded transaction {
+	tx, blockHash, blockNumber, index, err := b.b.GetTransaction(ctx, common.Hash(txHash))
+	if err != nil {
+		return nil, core.Hash(blockHash), blockNumber, index, err
+	}
+	enc, err := tx.MarshalBinary()
+	return enc, core.Hash(blockHash), blockNumber, index, err
+}
+func (b *Backend) GetPoolTransactions() ([][]byte, error) {
+	txs, err := b.b.GetPoolTransactions()
+	if err != nil {
+		return nil, err
+	}
+	results := make([][]byte, len(txs))
+	for i, tx := range txs {
+		results[i], _ = rlp.EncodeToBytes(tx)
+	}
+	return results, nil
+}
+func (b *Backend) GetPoolTransaction(txHash core.Hash) []byte {
+	tx := b.b.GetPoolTransaction(common.Hash(txHash))
+	if tx == nil {
+		return []byte{}
+	}
+	enc, _ := rlp.EncodeToBytes(tx)
+	return enc
+}
+func (b *Backend) GetPoolNonce(ctx context.Context, addr core.Address) (uint64, error) {
+	return b.b.GetPoolNonce(ctx, common.Address(addr))
+}
+func (b *Backend) Stats() (pending int, queued int) {
+	return b.b.Stats()
+}
+func (b *Backend) TxPoolContent() (map[core.Address][][]byte, map[core.Address][][]byte) {
+	pending, queued := b.b.TxPoolContent()
+	trpending, trqueued := make(map[core.Address][][]byte), make(map[core.Address][][]byte)
+	for k, v := range pending {
+		trpending[core.Address(k)] = make([][]byte, len(v))
+		for i, tx := range v {
+			trpending[core.Address(k)][i], _ = tx.MarshalBinary()
+		}
+	}
+	for k, v := range queued {
+		trqueued[core.Address(k)] = make([][]byte, len(v))
+		for i, tx := range v {
+			trpending[core.Address(k)][i], _ = tx.MarshalBinary()
+		}
+	}
+	return trpending, trqueued
+} // RLP encoded transactions
+func (b *Backend) BloomStatus() (uint64, uint64) {
+	return b.b.BloomStatus()
+}
+func (b *Backend) GetLogs(ctx context.Context, blockHash core.Hash) ([][]byte, error) {
+	logs, err := b.b.GetLogs(ctx, common.Hash(blockHash))
+	if err != nil {
+		return nil, err
+	}
+	encLogs := make([][]byte, len(logs))
+	for i, log := range logs {
+		encLogs[i], _ = rlp.EncodeToBytes(log)
+	}
+	return encLogs, nil
+} // []RLP encoded logs
+
+type dli interface {
+	SyncProgress() ethereum.SyncProgress
+}
+
+type dl struct {
+	dl dli
+}
+
+type progress struct {
+	p ethereum.SyncProgress
+}
+
+func (p *progress) StartingBlock() uint64 {
+	return p.p.StartingBlock
+}
+func (p *progress) CurrentBlock() uint64 {
+	return p.p.CurrentBlock
+}
+func (p *progress) HighestBlock() uint64 {
+	return p.p.HighestBlock
+}
+func (p *progress) PulledStates() uint64 {
+	return p.p.PulledStates
+}
+func (p *progress) KnownStates() uint64 {
+	return p.p.KnownStates
+}
+
+func (d *dl) Progress() core.Progress {
+	return &progress{d.dl.SyncProgress()}
+}
+
+func (b *Backend) Downloader() core.Downloader {
+	return &dl{b.b}
+}
+
+func (b *Backend) SubscribeNewTxsEvent(ch chan<- core.NewTxsEvent) core.Subscription {
+	var sub event.Subscription
+	b.newTxsOnce.Do(func() {
+		bch := make(chan gcore.NewTxsEvent, 100)
+		sub = b.b.SubscribeNewTxsEvent(bch)
+		go func() {
+			for {
+				select {
+				case item := <-bch:
+					txe := core.NewTxsEvent{
+						Txs: make([][]byte, len(item.Txs)),
+					}
+					for i, tx := range item.Txs {
+						txe.Txs[i], _ = tx.MarshalBinary()
+					}
+					b.newTxsFeed.Send(txe)
+				case err := <-sub.Err():
+					log.Warn("Subscription error for NewTxs", "err", err)
+					return
+				}
+			}
+		}()
+	})
+	return b.newTxsFeed.Subscribe(ch)
+}
+func (b *Backend) SubscribeChainEvent(ch chan<- core.ChainEvent) core.Subscription {
+	var sub event.Subscription
+	b.chainOnce.Do(func() {
+		bch := make(chan gcore.ChainEvent, 100)
+		sub = b.b.SubscribeChainEvent(bch)
+		go func() {
+			for {
+				select {
+				case item := <-bch:
+					ce := core.ChainEvent{
+						Hash: core.Hash(item.Hash),
+					}
+					ce.Block, _ = rlp.EncodeToBytes(item.Block)
+					ce.Logs, _ = rlp.EncodeToBytes(item.Logs)
+					b.chainFeed.Send(ce)
+				case err := <-sub.Err():
+					log.Warn("Subscription error for Chain", "err", err)
+					return
+				}
+			}
+		}()
+	})
+	return b.chainFeed.Subscribe(ch)
+}
+func (b *Backend) SubscribeChainHeadEvent(ch chan<- core.ChainHeadEvent) core.Subscription {
+	var sub event.Subscription
+	b.chainHeadOnce.Do(func() {
+		bch := make(chan gcore.ChainHeadEvent, 100)
+		sub = b.b.SubscribeChainHeadEvent(bch)
+		go func() {
+			for {
+				select {
+				case item := <-bch:
+					che := core.ChainHeadEvent{}
+					che.Block, _ = rlp.EncodeToBytes(item.Block)
+					b.chainHeadFeed.Send(che)
+				case err := <-sub.Err():
+					log.Warn("Subscription error for ChainHead", "err", err)
+					return
+				}
+			}
+		}()
+	})
+	return b.chainHeadFeed.Subscribe(ch)
+}
+func (b *Backend) SubscribeChainSideEvent(ch chan<- core.ChainSideEvent) core.Subscription {
+	var sub event.Subscription
+	b.chainSideOnce.Do(func() {
+		bch := make(chan gcore.ChainSideEvent, 100)
+		sub = b.b.SubscribeChainSideEvent(bch)
+		go func() {
+			for {
+				select {
+				case item := <-bch:
+					cse := core.ChainSideEvent{}
+					cse.Block, _ = rlp.EncodeToBytes(item.Block)
+					b.chainSideFeed.Send(cse)
+				case err := <-sub.Err():
+					log.Warn("Subscription error for ChainSide", "err", err)
+					return
+				}
+			}
+		}()
+	})
+	return b.chainSideFeed.Subscribe(ch)
+}
+func (b *Backend) SubscribeLogsEvent(ch chan<- [][]byte) core.Subscription {
+	var sub event.Subscription
+	b.logsOnce.Do(func() {
+		bch := make(chan []*types.Log, 100)
+		sub = b.b.SubscribeLogsEvent(bch)
+		go func() {
+			for {
+				select {
+				case item := <-bch:
+					logs := make([][]byte, len(item))
+					for i, log := range item {
+						logs[i], _ = rlp.EncodeToBytes(log)
+					}
+					b.logsFeed.Send(logs)
+				case err := <-sub.Err():
+					log.Warn("Subscription error for Logs", "err", err)
+					return
+				}
+			}
+		}()
+	})
+	return b.logsFeed.Subscribe(ch)
+} // []RLP encoded logs
+func (b *Backend) SubscribePendingLogsEvent(ch chan<- [][]byte) core.Subscription {
+	var sub event.Subscription
+	b.pendingLogsOnce.Do(func() {
+		bch := make(chan []*types.Log, 100)
+		sub = b.b.SubscribePendingLogsEvent(bch)
+		go func() {
+			for {
+				select {
+				case item := <-bch:
+					logs := make([][]byte, len(item))
+					for i, log := range item {
+						logs[i], _ = rlp.EncodeToBytes(log)
+					}
+					b.pendingLogsFeed.Send(logs)
+				case err := <-sub.Err():
+					log.Warn("Subscription error for PendingLogs", "err", err)
+					return
+				}
+			}
+		}()
+	})
+	return b.pendingLogsFeed.Subscribe(ch)
+} // RLP Encoded logs
+func (b *Backend) SubscribeRemovedLogsEvent(ch chan<- []byte) core.Subscription {
+	var sub event.Subscription
+	b.removedLogsOnce.Do(func() {
+		bch := make(chan gcore.RemovedLogsEvent, 100)
+		sub = b.b.SubscribeRemovedLogsEvent(bch)
+		go func() {
+			for {
+				select {
+				case item := <-bch:
+					logs := make([][]byte, len(item.Logs))
+					for i, log := range item.Logs {
+						logs[i], _ = rlp.EncodeToBytes(log)
+					}
+					b.removedLogsFeed.Send(item)
+				case err := <-sub.Err():
+					log.Warn("Subscription error for RemovedLogs", "err", err)
+					return
+				}
+			}
+		}()
+	})
+	return b.removedLogsFeed.Subscribe(ch)
+} // RLP encoded logs
+
+func convertAndSet(a, b reflect.Value) (err error) {
+	defer func() {
+		if recover() != nil {
+			fmt.Errorf("error converting: %v", err.Error())
+		}
+	}()
+	a.Set(b.Convert(a.Type()))
+	return nil
+}
+
+func (b *Backend) ChainConfig() *params.ChainConfig {
+	// We're using the reflect library to copy data from params.ChainConfig to
+	// pparams.ChainConfig, so this function shouldn't need to be touched for
+	// simple changes to ChainConfig (though pparams.ChainConfig may need to be
+	// updated). Note that this probably won't carry over consensus engine data.
+	if b.chainConfig != nil {
+		return b.chainConfig
+	}
+	b.chainConfig = &params.ChainConfig{}
+	nval := reflect.ValueOf(b.b.ChainConfig())
+	ntype := nval.Elem().Type()
+	lval := reflect.ValueOf(b.chainConfig)
+	for i := 0; i < nval.Elem().NumField(); i++ {
+		field := ntype.Field(i)
+		v := nval.Elem().FieldByName(field.Name)
+		lv := lval.Elem().FieldByName(field.Name)
+		log.Info("Checking value for", "field", field.Name)
+		if lv.Kind() != reflect.Invalid {
+			// If core.ChainConfig doesn't have this field, skip it.
+			if v.Type() == lv.Type() && lv.CanSet() {
+				lv.Set(v)
+			} else {
+				convertAndSet(lv, v)
+			}
+		}
+	}
+	return b.chainConfig
+}

plugins/wrappers/backendwrapper/dbwrapper.go

@@ -0,0 +1,49 @@
+package backendwrapper
+
+import (
+	"fmt"
+
+	"github.com/ethereum/go-ethereum/ethdb"
+	"github.com/openrelayxyz/plugeth-utils/restricted"
+)
+
+type dbWrapper struct {
+	db ethdb.Database
+}
+
+func (d *dbWrapper) Has(key []byte) (bool, error)             { return d.db.Has(key) }
+func (d *dbWrapper) Get(key []byte) ([]byte, error)           { return d.db.Get(key) }
+func (d *dbWrapper) Put(key []byte, value []byte) error       { return d.db.Put(key, value) }
+func (d *dbWrapper) Delete(key []byte) error                  { return d.db.Delete(key) }
+func (d *dbWrapper) Stat(property string) (string, error)     { return d.db.Stat(property) }
+func (d *dbWrapper) Compact(start []byte, limit []byte) error { return d.db.Compact(start, limit) }
+func (d *dbWrapper) HasAncient(kind string, number uint64) (bool, error) {
+	return d.db.HasAncient(kind, number)
+}
+func (d *dbWrapper) Ancient(kind string, number uint64) ([]byte, error) {
+	return d.db.Ancient(kind, number)
+}
+func (d *dbWrapper) Ancients() (uint64, error)               { return d.db.Ancients() }
+func (d *dbWrapper) AncientSize(kind string) (uint64, error) { return d.db.AncientSize(kind) }
+func (d *dbWrapper) AppendAncient(number uint64, hash, header, body, receipt, td []byte) error {
+	return fmt.Errorf("AppendAncient is no longer supported in geth 1.10.9 and above. Use ModifyAncients instead.")
+}
+func (d *dbWrapper) ModifyAncients(fn func(ethdb.AncientWriteOp) error) (int64, error) {
+	return d.db.ModifyAncients(fn)
+}
+func (d *dbWrapper) TruncateAncients(n uint64) error { return d.db.TruncateAncients(n) }
+func (d *dbWrapper) Sync() error                     { return d.db.Sync() }
+func (d *dbWrapper) Close() error                    { return d.db.Close() }
+func (d *dbWrapper) NewIterator(prefix []byte, start []byte) restricted.Iterator {
+	return &iterWrapper{d.db.NewIterator(prefix, start)}
+}
+
+type iterWrapper struct {
+	iter ethdb.Iterator
+}
+
+func (it *iterWrapper) Next() bool    { return it.iter.Next() }
+func (it *iterWrapper) Error() error  { return it.iter.Error() }
+func (it *iterWrapper) Key() []byte   { return it.iter.Key() }
+func (it *iterWrapper) Value() []byte { return it.iter.Value() }
+func (it *iterWrapper) Release()      { it.iter.Release() }