From 12ccd0c0190bd02c16ab38c340c435166b57baaf Mon Sep 17 00:00:00 2001 From: Felix Lange Date: Tue, 2 Aug 2022 19:23:38 +0200 Subject: [PATCH] graphql: embed *Resolver instead of backend interface This creates some infrastructure to share resources between graphql API objects. --- graphql/graphql.go | 132 ++++++++++++++++++++++----------------------- graphql/service.go | 4 -- 2 files changed, 66 insertions(+), 70 deletions(-) diff --git a/graphql/graphql.go b/graphql/graphql.go index 0654fd1af388..0949c34803cf 100644 --- a/graphql/graphql.go +++ b/graphql/graphql.go @@ -76,14 +76,14 @@ func (b *Long) UnmarshalGraphQL(input interface{}) error { // Account represents an Ethereum account at a particular block. type Account struct { - backend ethapi.Backend + r *Resolver address common.Address blockNrOrHash rpc.BlockNumberOrHash } // getState fetches the StateDB object for an account. func (a *Account) getState(ctx context.Context) (*state.StateDB, error) { - state, _, err := a.backend.StateAndHeaderByNumberOrHash(ctx, a.blockNrOrHash) + state, _, err := a.r.backend.StateAndHeaderByNumberOrHash(ctx, a.blockNrOrHash) return state, err } @@ -106,7 +106,7 @@ func (a *Account) Balance(ctx context.Context) (hexutil.Big, error) { func (a *Account) TransactionCount(ctx context.Context) (hexutil.Uint64, error) { // Ask transaction pool for the nonce which includes pending transactions if blockNr, ok := a.blockNrOrHash.Number(); ok && blockNr == rpc.PendingBlockNumber { - nonce, err := a.backend.GetPoolNonce(ctx, a.address) + nonce, err := a.r.backend.GetPoolNonce(ctx, a.address) if err != nil { return 0, err } @@ -137,7 +137,7 @@ func (a *Account) Storage(ctx context.Context, args struct{ Slot common.Hash }) // Log represents an individual log message. All arguments are mandatory. type Log struct { - backend ethapi.Backend + r *Resolver transaction *Transaction log *types.Log } @@ -148,7 +148,7 @@ func (l *Log) Transaction(ctx context.Context) *Transaction { func (l *Log) Account(ctx context.Context, args BlockNumberArgs) *Account { return &Account{ - backend: l.backend, + r: l.r, address: l.log.Address, blockNrOrHash: args.NumberOrLatest(), } @@ -183,30 +183,30 @@ func (at *AccessTuple) StorageKeys(ctx context.Context) []common.Hash { // Transaction represents an Ethereum transaction. // backend and hash are mandatory; all others will be fetched when required. type Transaction struct { - backend ethapi.Backend - hash common.Hash - tx *types.Transaction - block *Block - index uint64 + r *Resolver + hash common.Hash + tx *types.Transaction + block *Block + index uint64 } // resolve returns the internal transaction object, fetching it if needed. func (t *Transaction) resolve(ctx context.Context) (*types.Transaction, error) { if t.tx == nil { // Try to return an already finalized transaction - tx, blockHash, _, index, err := t.backend.GetTransaction(ctx, t.hash) + tx, blockHash, _, index, err := t.r.backend.GetTransaction(ctx, t.hash) if err == nil && tx != nil { t.tx = tx blockNrOrHash := rpc.BlockNumberOrHashWithHash(blockHash, false) t.block = &Block{ - backend: t.backend, + r: t.r, numberOrHash: &blockNrOrHash, } t.index = index return t.tx, nil } // No finalized transaction, try to retrieve it from the pool - t.tx = t.backend.GetPoolTransaction(t.hash) + t.tx = t.r.backend.GetPoolTransaction(t.hash) } return t.tx, nil } @@ -354,7 +354,7 @@ func (t *Transaction) To(ctx context.Context, args BlockNumberArgs) (*Account, e return nil, nil } return &Account{ - backend: t.backend, + r: t.r, address: *to, blockNrOrHash: args.NumberOrLatest(), }, nil @@ -365,10 +365,10 @@ func (t *Transaction) From(ctx context.Context, args BlockNumberArgs) (*Account, if err != nil || tx == nil { return nil, err } - signer := types.LatestSigner(t.backend.ChainConfig()) + signer := types.LatestSigner(t.r.backend.ChainConfig()) from, _ := types.Sender(signer, tx) return &Account{ - backend: t.backend, + r: t.r, address: from, blockNrOrHash: args.NumberOrLatest(), }, nil @@ -443,7 +443,7 @@ func (t *Transaction) CreatedContract(ctx context.Context, args BlockNumberArgs) return nil, err } return &Account{ - backend: t.backend, + r: t.r, address: receipt.ContractAddress, blockNrOrHash: args.NumberOrLatest(), }, nil @@ -457,7 +457,7 @@ func (t *Transaction) Logs(ctx context.Context) (*[]*Log, error) { ret := make([]*Log, 0, len(receipt.Logs)) for _, log := range receipt.Logs { ret = append(ret, &Log{ - backend: t.backend, + r: t.r, transaction: t, log: log, }) @@ -539,7 +539,7 @@ type BlockType int // backend, and numberOrHash are mandatory. All other fields are lazily fetched // when required. type Block struct { - backend ethapi.Backend + r *Resolver numberOrHash *rpc.BlockNumberOrHash hash common.Hash header *types.Header @@ -558,7 +558,7 @@ func (b *Block) resolve(ctx context.Context) (*types.Block, error) { b.numberOrHash = &latest } var err error - b.block, err = b.backend.BlockByNumberOrHash(ctx, *b.numberOrHash) + b.block, err = b.r.backend.BlockByNumberOrHash(ctx, *b.numberOrHash) if b.block != nil && b.header == nil { b.header = b.block.Header() if hash, ok := b.numberOrHash.Hash(); ok { @@ -578,9 +578,9 @@ func (b *Block) resolveHeader(ctx context.Context) (*types.Header, error) { var err error if b.header == nil { if b.hash != (common.Hash{}) { - b.header, err = b.backend.HeaderByHash(ctx, b.hash) + b.header, err = b.r.backend.HeaderByHash(ctx, b.hash) } else { - b.header, err = b.backend.HeaderByNumberOrHash(ctx, *b.numberOrHash) + b.header, err = b.r.backend.HeaderByNumberOrHash(ctx, *b.numberOrHash) } } return b.header, err @@ -598,7 +598,7 @@ func (b *Block) resolveReceipts(ctx context.Context) ([]*types.Receipt, error) { } hash = header.Hash() } - receipts, err := b.backend.GetReceipts(ctx, hash) + receipts, err := b.r.backend.GetReceipts(ctx, hash) if err != nil { return nil, err } @@ -659,7 +659,7 @@ func (b *Block) NextBaseFeePerGas(ctx context.Context) (*hexutil.Big, error) { if err != nil { return nil, err } - chaincfg := b.backend.ChainConfig() + chaincfg := b.r.backend.ChainConfig() if header.BaseFee == nil { // Make sure next block doesn't enable EIP-1559 if !chaincfg.IsLondon(new(big.Int).Add(header.Number, common.Big1)) { @@ -679,7 +679,7 @@ func (b *Block) Parent(ctx context.Context) (*Block, error) { } num := rpc.BlockNumberOrHashWithNumber(rpc.BlockNumber(b.header.Number.Uint64() - 1)) return &Block{ - backend: b.backend, + r: b.r, numberOrHash: &num, hash: b.header.ParentHash, }, nil @@ -767,7 +767,7 @@ func (b *Block) Ommers(ctx context.Context) (*[]*Block, error) { for _, uncle := range block.Uncles() { blockNumberOrHash := rpc.BlockNumberOrHashWithHash(uncle.Hash(), false) ret = append(ret, &Block{ - backend: b.backend, + r: b.r, numberOrHash: &blockNumberOrHash, header: uncle, }) @@ -800,7 +800,7 @@ func (b *Block) TotalDifficulty(ctx context.Context) (hexutil.Big, error) { } h = header.Hash() } - td := b.backend.GetTd(ctx, h) + td := b.r.backend.GetTd(ctx, h) if td == nil { return hexutil.Big{}, fmt.Errorf("total difficulty not found %x", b.hash) } @@ -853,7 +853,7 @@ func (b *Block) Miner(ctx context.Context, args BlockNumberArgs) (*Account, erro return nil, err } return &Account{ - backend: b.backend, + r: b.r, address: header.Coinbase, blockNrOrHash: args.NumberOrLatest(), }, nil @@ -876,11 +876,11 @@ func (b *Block) Transactions(ctx context.Context) (*[]*Transaction, error) { ret := make([]*Transaction, 0, len(block.Transactions())) for i, tx := range block.Transactions() { ret = append(ret, &Transaction{ - backend: b.backend, - hash: tx.Hash(), - tx: tx, - block: b, - index: uint64(i), + r: b.r, + hash: tx.Hash(), + tx: tx, + block: b, + index: uint64(i), }) } return &ret, nil @@ -897,11 +897,11 @@ func (b *Block) TransactionAt(ctx context.Context, args struct{ Index int32 }) ( } tx := txs[args.Index] return &Transaction{ - backend: b.backend, - hash: tx.Hash(), - tx: tx, - block: b, - index: uint64(args.Index), + r: b.r, + hash: tx.Hash(), + tx: tx, + block: b, + index: uint64(args.Index), }, nil } @@ -917,7 +917,7 @@ func (b *Block) OmmerAt(ctx context.Context, args struct{ Index int32 }) (*Block uncle := uncles[args.Index] blockNumberOrHash := rpc.BlockNumberOrHashWithHash(uncle.Hash(), false) return &Block{ - backend: b.backend, + r: b.r, numberOrHash: &blockNumberOrHash, header: uncle, }, nil @@ -944,7 +944,7 @@ type BlockFilterCriteria struct { // runFilter accepts a filter and executes it, returning all its results as // `Log` objects. -func runFilter(ctx context.Context, be ethapi.Backend, filter *filters.Filter) ([]*Log, error) { +func runFilter(ctx context.Context, r *Resolver, filter *filters.Filter) ([]*Log, error) { logs, err := filter.Logs(ctx) if err != nil || logs == nil { return nil, err @@ -952,8 +952,8 @@ func runFilter(ctx context.Context, be ethapi.Backend, filter *filters.Filter) ( ret := make([]*Log, 0, len(logs)) for _, log := range logs { ret = append(ret, &Log{ - backend: be, - transaction: &Transaction{backend: be, hash: log.TxHash}, + r: r, + transaction: &Transaction{r: r, hash: log.TxHash}, log: log, }) } @@ -978,10 +978,10 @@ func (b *Block) Logs(ctx context.Context, args struct{ Filter BlockFilterCriteri hash = header.Hash() } // Construct the range filter - filter := filters.NewBlockFilter(b.backend, hash, addresses, topics) + filter := filters.NewBlockFilter(b.r.backend, hash, addresses, topics) // Run the filter and return all the logs - return runFilter(ctx, b.backend, filter) + return runFilter(ctx, b.r, filter) } func (b *Block) Account(ctx context.Context, args struct { @@ -994,7 +994,7 @@ func (b *Block) Account(ctx context.Context, args struct { } } return &Account{ - backend: b.backend, + r: b.r, address: args.Address, blockNrOrHash: *b.numberOrHash, }, nil @@ -1041,7 +1041,7 @@ func (b *Block) Call(ctx context.Context, args struct { return nil, err } } - result, err := ethapi.DoCall(ctx, b.backend, args.Data, *b.numberOrHash, nil, b.backend.RPCEVMTimeout(), b.backend.RPCGasCap()) + result, err := ethapi.DoCall(ctx, b.r.backend, args.Data, *b.numberOrHash, nil, b.r.backend.RPCEVMTimeout(), b.r.backend.RPCGasCap()) if err != nil { return nil, err } @@ -1066,31 +1066,31 @@ func (b *Block) EstimateGas(ctx context.Context, args struct { return 0, err } } - gas, err := ethapi.DoEstimateGas(ctx, b.backend, args.Data, *b.numberOrHash, b.backend.RPCGasCap()) + gas, err := ethapi.DoEstimateGas(ctx, b.r.backend, args.Data, *b.numberOrHash, b.r.backend.RPCGasCap()) return Long(gas), err } type Pending struct { - backend ethapi.Backend + r *Resolver } func (p *Pending) TransactionCount(ctx context.Context) (int32, error) { - txs, err := p.backend.GetPoolTransactions() + txs, err := p.r.backend.GetPoolTransactions() return int32(len(txs)), err } func (p *Pending) Transactions(ctx context.Context) (*[]*Transaction, error) { - txs, err := p.backend.GetPoolTransactions() + txs, err := p.r.backend.GetPoolTransactions() if err != nil { return nil, err } ret := make([]*Transaction, 0, len(txs)) for i, tx := range txs { ret = append(ret, &Transaction{ - backend: p.backend, - hash: tx.Hash(), - tx: tx, - index: uint64(i), + r: p.r, + hash: tx.Hash(), + tx: tx, + index: uint64(i), }) } return &ret, nil @@ -1101,7 +1101,7 @@ func (p *Pending) Account(ctx context.Context, args struct { }) *Account { pendingBlockNr := rpc.BlockNumberOrHashWithNumber(rpc.PendingBlockNumber) return &Account{ - backend: p.backend, + r: p.r, address: args.Address, blockNrOrHash: pendingBlockNr, } @@ -1111,7 +1111,7 @@ func (p *Pending) Call(ctx context.Context, args struct { Data ethapi.TransactionArgs }) (*CallResult, error) { pendingBlockNr := rpc.BlockNumberOrHashWithNumber(rpc.PendingBlockNumber) - result, err := ethapi.DoCall(ctx, p.backend, args.Data, pendingBlockNr, nil, p.backend.RPCEVMTimeout(), p.backend.RPCGasCap()) + result, err := ethapi.DoCall(ctx, p.r.backend, args.Data, pendingBlockNr, nil, p.r.backend.RPCEVMTimeout(), p.r.backend.RPCGasCap()) if err != nil { return nil, err } @@ -1131,7 +1131,7 @@ func (p *Pending) EstimateGas(ctx context.Context, args struct { Data ethapi.TransactionArgs }) (Long, error) { pendingBlockNr := rpc.BlockNumberOrHashWithNumber(rpc.PendingBlockNumber) - gas, err := ethapi.DoEstimateGas(ctx, p.backend, args.Data, pendingBlockNr, p.backend.RPCGasCap()) + gas, err := ethapi.DoEstimateGas(ctx, p.r.backend, args.Data, pendingBlockNr, p.r.backend.RPCGasCap()) return Long(gas), err } @@ -1152,19 +1152,19 @@ func (r *Resolver) Block(ctx context.Context, args struct { number := rpc.BlockNumber(*args.Number) numberOrHash := rpc.BlockNumberOrHashWithNumber(number) block = &Block{ - backend: r.backend, + r: r, numberOrHash: &numberOrHash, } } else if args.Hash != nil { numberOrHash := rpc.BlockNumberOrHashWithHash(*args.Hash, false) block = &Block{ - backend: r.backend, + r: r, numberOrHash: &numberOrHash, } } else { numberOrHash := rpc.BlockNumberOrHashWithNumber(rpc.LatestBlockNumber) block = &Block{ - backend: r.backend, + r: r, numberOrHash: &numberOrHash, } } @@ -1199,7 +1199,7 @@ func (r *Resolver) Blocks(ctx context.Context, args struct { for i := from; i <= to; i++ { numberOrHash := rpc.BlockNumberOrHashWithNumber(i) block := &Block{ - backend: r.backend, + r: r, numberOrHash: &numberOrHash, } // Resolve the header to check for existence. @@ -1218,13 +1218,13 @@ func (r *Resolver) Blocks(ctx context.Context, args struct { } func (r *Resolver) Pending(ctx context.Context) *Pending { - return &Pending{r.backend} + return &Pending{r} } func (r *Resolver) Transaction(ctx context.Context, args struct{ Hash common.Hash }) (*Transaction, error) { tx := &Transaction{ - backend: r.backend, - hash: args.Hash, + r: r, + hash: args.Hash, } // Resolve the transaction; if it doesn't exist, return nil. t, err := tx.resolve(ctx) @@ -1284,8 +1284,8 @@ func (r *Resolver) Logs(ctx context.Context, args struct{ Filter FilterCriteria topics = *args.Filter.Topics } // Construct the range filter - filter := filters.NewRangeFilter(filters.Backend(r.backend), begin, end, addresses, topics) - return runFilter(ctx, r.backend, filter) + filter := filters.NewRangeFilter(r.backend, begin, end, addresses, topics) + return runFilter(ctx, r, filter) } func (r *Resolver) GasPrice(ctx context.Context) (hexutil.Big, error) { diff --git a/graphql/service.go b/graphql/service.go index 396a477005dd..1a2ffaa9469d 100644 --- a/graphql/service.go +++ b/graphql/service.go @@ -56,10 +56,6 @@ func (h handler) ServeHTTP(w http.ResponseWriter, r *http.Request) { // New constructs a new GraphQL service instance. func New(stack *node.Node, backend ethapi.Backend, cors, vhosts []string) error { - if backend == nil { - panic("missing backend") - } - // check if http server with given endpoint exists and enable graphQL on it return newHandler(stack, backend, cors, vhosts) }