changes in service to operational and assumed complete blockTracer plugin

go.mod

@@ -8,7 +8,6 @@ require (
 	github.com/Azure/go-autorest/autorest/adal v0.8.0 // indirect
 	github.com/StackExchange/wmi v0.0.0-20180116203802-5d049714c4a6 // indirect
 	github.com/VictoriaMetrics/fastcache v1.6.0
-	github.com/aws/aws-sdk-go v1.41.4
 	github.com/aws/aws-sdk-go-v2 v1.2.0
 	github.com/aws/aws-sdk-go-v2/config v1.1.1
 	github.com/aws/aws-sdk-go-v2/credentials v1.1.1
@@ -56,7 +55,6 @@ require (
 	github.com/peterh/liner v1.1.1-0.20190123174540-a2c9a5303de7
 	github.com/prometheus/tsdb v0.7.1
 	github.com/rjeczalik/notify v0.9.1
-	github.com/robertkrimen/otto v0.0.0-20211008084715-4eacda02dd21
 	github.com/rs/cors v1.7.0
 	github.com/shirou/gopsutil v3.21.4-0.20210419000835-c7a38de76ee5+incompatible
 	github.com/status-im/keycard-go v0.0.0-20190316090335-8537d3370df4

go.sum

@@ -55,8 +55,6 @@ github.com/allegro/bigcache v1.2.1-0.20190218064605-e24eb225f156 h1:eMwmnE/GDgah
 github.com/allegro/bigcache v1.2.1-0.20190218064605-e24eb225f156/go.mod h1:Cb/ax3seSYIx7SuZdm2G2xzfwmv3TPSk2ucNfQESPXM=
 github.com/andreyvit/diff v0.0.0-20170406064948-c7f18ee00883/go.mod h1:rCTlJbsFo29Kk6CurOXKm700vrz8f0KW0JNfpkRJY/8=
 github.com/apache/arrow/go/arrow v0.0.0-20191024131854-af6fa24be0db/go.mod h1:VTxUBvSJ3s3eHAg65PNgrsn5BtqCRPdmyXh6rAfdxN0=
-github.com/aws/aws-sdk-go v1.41.4 h1:5xRzZp8LfBFfowMPxmoNsxLBZOY/NTH4EeI7q2F5eWE=
-github.com/aws/aws-sdk-go v1.41.4/go.mod h1:585smgzpB/KqRA+K3y/NL/oYRqQvpNJYvLm+LY1U59Q=
 github.com/aws/aws-sdk-go-v2 v1.2.0 h1:BS+UYpbsElC82gB+2E2jiCBg36i8HlubTB/dO/moQ9c=
 github.com/aws/aws-sdk-go-v2 v1.2.0/go.mod h1:zEQs02YRBw1DjK0PoJv3ygDYOFTre1ejlJWl8FwAuQo=
 github.com/aws/aws-sdk-go-v2/config v1.1.1 h1:ZAoq32boMzcaTW9bcUacBswAmHTbvlvDJICgHFZuECo=
@@ -255,9 +253,7 @@ github.com/jackpal/go-nat-pmp v1.0.2-0.20160603034137-1fa385a6f458/go.mod h1:QPH
 github.com/jedisct1/go-minisign v0.0.0-20190909160543-45766022959e h1:UvSe12bq+Uj2hWd8aOlwPmoZ+CITRFrdit+sDGfAg8U=
 github.com/jedisct1/go-minisign v0.0.0-20190909160543-45766022959e/go.mod h1:G1CVv03EnqU1wYL2dFwXxW2An0az9JTl/ZsqXQeBlkU=
 github.com/jessevdk/go-flags v0.0.0-20141203071132-1679536dcc89/go.mod h1:4FA24M0QyGHXBuZZK/XkWh8h0e1EYbRYJSGM75WSRxI=
-github.com/jmespath/go-jmespath v0.4.0 h1:BEgLn5cpjn8UN1mAw4NjwDrS35OdebyEtFe+9YPoQUg=
 github.com/jmespath/go-jmespath v0.4.0/go.mod h1:T8mJZnbsbmF+m6zOOFylbeCJqk5+pHWvzYPziyZiYoo=
-github.com/jmespath/go-jmespath/internal/testify v1.5.1 h1:shLQSRRSCCPj3f2gpwzGwWFoC7ycTf1rcQZHOlsJ6N8=
 github.com/jmespath/go-jmespath/internal/testify v1.5.1/go.mod h1:L3OGu8Wl2/fWfCI6z80xFu9LTZmf1ZRjMHUOPmWr69U=
 github.com/jrick/logrotate v1.0.0/go.mod h1:LNinyqDIJnpAur+b8yyulnQw/wDuN1+BYKlTRt3OuAQ=
 github.com/json-iterator/go v1.1.6/go.mod h1:+SdeFBvtyEkXs7REEP0seUULqWtbJapLOCVDaaPEHmU=
@@ -343,8 +339,6 @@ github.com/onsi/gomega v1.4.3/go.mod h1:ex+gbHU/CVuBBDIJjb2X0qEXbFg53c61hWP/1Cpa
 github.com/onsi/gomega v1.7.1/go.mod h1:XdKZgCCFLUoM/7CFJVPcG8C1xQ1AJ0vpAezJrB7JYyY=
 github.com/onsi/gomega v1.10.1 h1:o0+MgICZLuZ7xjH7Vx6zS/zcu93/BEp1VwkIW1mEXCE=
 github.com/onsi/gomega v1.10.1/go.mod h1:iN09h71vgCQne3DLsj+A5owkum+a2tYe+TOCB1ybHNo=
-github.com/openrelayxyz/plugeth-utils v0.0.8 h1:HpXGnWTQD0/zOmva/YLdY53HET70h/LQLSuVCJl1gdY=
-github.com/openrelayxyz/plugeth-utils v0.0.8/go.mod h1:Lv47unyKJ3b/PVbVAt9Uk+RQmpdrzDOsjSCPhAMQAps=
 github.com/opentracing/opentracing-go v1.0.2/go.mod h1:UkNAQd3GIcIGf0SeVgPpRdFStlNbqXla1AfSYxPUl2o=
 github.com/opentracing/opentracing-go v1.0.3-0.20180606204148-bd9c31933947/go.mod h1:UkNAQd3GIcIGf0SeVgPpRdFStlNbqXla1AfSYxPUl2o=
 github.com/opentracing/opentracing-go v1.1.0 h1:pWlfV3Bxv7k65HYwkikxat0+s3pV4bsqf19k25Ur8rU=
@@ -377,8 +371,6 @@ github.com/prometheus/tsdb v0.7.1/go.mod h1:qhTCs0VvXwvX/y3TZrWD7rabWM+ijKTux40T
 github.com/retailnext/hllpp v1.0.1-0.20180308014038-101a6d2f8b52/go.mod h1:RDpi1RftBQPUCDRw6SmxeaREsAaRKnOclghuzp/WRzc=
 github.com/rjeczalik/notify v0.9.1 h1:CLCKso/QK1snAlnhNR/CNvNiFU2saUtjV0bx3EwNeCE=
 github.com/rjeczalik/notify v0.9.1/go.mod h1:rKwnCoCGeuQnwBtTSPL9Dad03Vh2n40ePRrjvIXnJho=
-github.com/robertkrimen/otto v0.0.0-20211008084715-4eacda02dd21 h1:uMgr5kPPCGOlEPx6lE8GPYjFkAN4ZDA9FX++QjIZn6Q=
-github.com/robertkrimen/otto v0.0.0-20211008084715-4eacda02dd21/go.mod h1:/mK7FZ3mFYEn9zvNPhpngTyatyehSwte5bJZ4ehL5Xw=
 github.com/rogpeppe/go-internal v1.3.0/go.mod h1:M8bDsm7K2OlrFYOpmOWEs/qY81heoFRclV5y23lUDJ4=
 github.com/rs/cors v1.7.0 h1:+88SsELBHx5r+hZ8TCkggzSstaWNbDvThkVK8H6f9ik=
 github.com/rs/cors v1.7.0/go.mod h1:gFx+x8UowdsKA9AchylcLynDq+nNFfI8FkUZdN/jGCU=
@@ -491,7 +483,6 @@ golang.org/x/net v0.0.0-20201021035429-f5854403a974/go.mod h1:sp8m0HH+o8qH0wwXwY
 golang.org/x/net v0.0.0-20210119194325-5f4716e94777/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
 golang.org/x/net v0.0.0-20210220033124-5f55cee0dc0d/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
 golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
-golang.org/x/net v0.0.0-20210614182718-04defd469f4e/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
 golang.org/x/net v0.0.0-20210805182204-aaa1db679c0d h1:20cMwl2fHAzkJMEA+8J4JgqBQcQGzbisXo31MIeenXI=
 golang.org/x/net v0.0.0-20210805182204-aaa1db679c0d/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
 golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
@@ -650,9 +641,6 @@ gopkg.in/natefinch/npipe.v2 v2.0.0-20160621034901-c1b8fa8bdcce h1:+JknDZhAj8YMt7
 gopkg.in/natefinch/npipe.v2 v2.0.0-20160621034901-c1b8fa8bdcce/go.mod h1:5AcXVHNjg+BDxry382+8OKon8SEWiKktQR07RKPsv1c=
 gopkg.in/olebedev/go-duktape.v3 v3.0.0-20200619000410-60c24ae608a6 h1:a6cXbcDDUkSBlpnkWV1bJ+vv3mOgQEltEJ2rPxroVu0=
 gopkg.in/olebedev/go-duktape.v3 v3.0.0-20200619000410-60c24ae608a6/go.mod h1:uAJfkITjFhyEEuUfm7bsmCZRbW5WRq8s9EY8HZ6hCns=
-gopkg.in/readline.v1 v1.0.0-20160726135117-62c6fe619375/go.mod h1:lNEQeAhU009zbRxng+XOj5ITVgY24WcbNnQopyfKoYQ=
-gopkg.in/sourcemap.v1 v1.0.5 h1:inv58fC9f9J3TK2Y2R1NPntXEn3/wjWHkonhIUODNTI=
-gopkg.in/sourcemap.v1 v1.0.5/go.mod h1:2RlvNNSMglmRrcvhfuzp4hQHwOtjxlbjX7UPY/GXb78=
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 h1:uRGJdciOHaEIrze2W8Q3AKkepLTh2hOroT7a+7czfdQ=
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
 gopkg.in/urfave/cli.v1 v1.20.0 h1:NdAVW6RYxDif9DhDHaAortIu956m2c0v+09AZBPTbE0=

plugins/interfaces/interface.go

@@ -71,7 +71,6 @@ type Backend interface {
 	Engine() consensus.Engine
 }
 
-
 type TracerResult interface {
 	vm.Tracer
 	GetResult() (interface{}, error)

plugins/wrappers/dbwrapper.go

@@ -1,38 +0,0 @@
-package wrappers
-
-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() }

plugins/wrappers/wrappers.go

@@ -1,30 +1,14 @@
 package wrappers
 
 import (
-	"context"
-	"encoding/json"
-	"fmt"
 	"math/big"
-	"reflect"
-	"sync"
 	"time"
 
-	"github.com/ethereum/go-ethereum"
 	"github.com/ethereum/go-ethereum/common"
-	gcore "github.com/ethereum/go-ethereum/core"
 	"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/internal/ethapi"
-	"github.com/ethereum/go-ethereum/event"
-	"github.com/ethereum/go-ethereum/log"
 	"github.com/ethereum/go-ethereum/node"
-	// "github.com/ethereum/go-ethereum/plugins/interfaces"
-	"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 WrappedScopeContext struct {
@@ -222,401 +206,3 @@ func (n *Node) ResolvePath(x string) string {
 func (n *Node) Attach() (core.Client, error) {
 	return n.n.Attach()
 }
-
-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
-}