cerc-io/ipld-eth-server
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Graphql #20

Merged
telackey merged 4 commits from graphql into master 2020-10-28 13:50:23 +00:00
Conversation 0 Commits 4 Files Changed 18 +1988 -261
18 changed files with 1988 additions and 261 deletions
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12
README.md
View File

@ -66,15 +66,23 @@ The corresponding CLI flags can be found with the `./ipld-eth-server serve --hel
ipcPath = "~/.vulcanize/vulcanize.ipc" # $SERVER_IPC_PATH
wsPath = "127.0.0.1:8081" # $SERVER_WS_PATH
httpPath = "127.0.0.1:8082" # $SERVER_HTTP_PATH
graphql = true # $SERVER_GRAPHQL
graphqlEndpoint = "" # $SERVER_GRAPHQL_ENDPOINT
[ethereum]
chainID = "1" # $ETH_CHAIN_ID
defaultSender = "" # $ETH_DEFAULT_SENDER_ADDR
rpcGasCap = "1000000000000" # $ETH_RPC_GAS_CAP
httpPath = "127.0.0.1:8545" # $ETH_HTTP_PATH
nodeID = "arch1" # $ETH_NODE_ID
clientName = "Geth" # $ETH_CLIENT_NAME
genesisBlock = "0xd4e56740f876aef8c010b86a40d5f56745a118d0906a34e69aec8c0db1cb8fa3" # $ETH_GENESIS_BLOCK
networkID = "1" # $ETH_NETWORK_ID
```
The `database` fields are for connecting to a Postgres database that has been/is being populated by [ipld-eth-indexer](https://github.com/vulcanize/ipld-eth-indexer).
The `database` fields are for connecting to a Postgres database that has been/is being populated by [ipld-eth-indexer](https://github.com/vulcanize/ipld-eth-indexer)
The `server` fields set the paths for exposing the ipld-eth-server endpoints
The `ethereum` fields set the chainID and default sender address to use for EVM simulation
The `ethereum` fields set the chainID and default sender address to use for EVM simulation, and can optionally be used to configure a remote eth node to forward cache misses to
### Endpoints

32
cmd/serve.go
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@ -20,6 +20,8 @@ import (
"os/signal"
"sync"
"github.com/vulcanize/ipld-eth-server/pkg/graphql"
"github.com/ethereum/go-ethereum/rpc"
log "github.com/sirupsen/logrus"
"github.com/spf13/cobra"
@ -28,7 +30,6 @@ import (
"github.com/vulcanize/ipld-eth-indexer/pkg/eth"
srpc "github.com/vulcanize/ipld-eth-server/pkg/rpc"
s "github.com/vulcanize/ipld-eth-server/pkg/serve"
v "github.com/vulcanize/ipld-eth-server/version"
)
@ -70,10 +71,17 @@ func serve() {
if err := startServers(server, serverConfig); err != nil {
logWithCommand.Fatal(err)
}
graphQL, err := startGraphQL(server)
if err != nil {
logWithCommand.Fatal(err)
}
shutdown := make(chan os.Signal)
signal.Notify(shutdown, os.Interrupt)
<-shutdown
if graphQL != nil {
graphQL.Stop()
}
server.Stop()
wg.Wait()
}
@ -91,14 +99,32 @@ func startServers(server s.Server, settings *s.Config) error {
}
logWithCommand.Info("starting up HTTP server")
_, _, err = srpc.StartHTTPEndpoint(settings.HTTPEndpoint, server.APIs(), []string{"eth"}, nil, []string{"*"}, rpc.HTTPTimeouts{})
return err
}
func startGraphQL(server s.Server) (graphQLServer *graphql.Service, err error) {
viper.BindEnv("server.graphql", "SERVER_GRAPHQL")
if viper.GetBool("server.graphql") {
logWithCommand.Info("starting up GraphQL server")
viper.BindEnv("server.graphqlEndpoint", "SERVER_GRAPHQL_ENDPOINT")
endPoint := viper.GetString("server.graphqlEndpoint")
if endPoint != "" {
graphQLServer, err = graphql.New(server.Backend(), endPoint, nil, []string{"*"}, rpc.HTTPTimeouts{})
if err != nil {
return
}
err = graphQLServer.Start(nil)
}
}
return
}
func init() {
rootCmd.AddCommand(serveCmd)
// flags for all config variables
serveCmd.PersistentFlags().Bool("server-graphql", false, "turn on the graphql server")
serveCmd.PersistentFlags().String("server-graphql-endpoint", "", "endpoint url for graphql server")
serveCmd.PersistentFlags().String("server-ws-path", "", "vdb server ws path")
serveCmd.PersistentFlags().String("server-http-path", "", "vdb server http path")
serveCmd.PersistentFlags().String("server-ipc-path", "", "vdb server ipc path")
@ -113,6 +139,8 @@ func init() {
serveCmd.PersistentFlags().String("eth-rpc-gas-cap", "", "rpc gas cap (for eth_Call execution)")
// and their bindings
viper.BindPFlag("server.graphql", serveCmd.PersistentFlags().Lookup("server-graphql"))
viper.BindPFlag("server.graphqlEndpoint", serveCmd.PersistentFlags().Lookup("server-graphql-endpoint"))
viper.BindPFlag("server.wsPath", serveCmd.PersistentFlags().Lookup("server-ws-path"))
viper.BindPFlag("server.httpPath", serveCmd.PersistentFlags().Lookup("server-http-path"))
viper.BindPFlag("server.ipcPath", serveCmd.PersistentFlags().Lookup("server-ipc-path"))

2
environments/example.toml
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@ -12,6 +12,8 @@
ipcPath = "~/.vulcanize/vulcanize.ipc" # $SERVER_IPC_PATH
wsPath = "127.0.0.1:8081" # $SERVER_WS_PATH
httpPath = "127.0.0.1:8082" # $SERVER_HTTP_PATH
graphql = true # $SERVER_GRAPHQL
graphqlEndpoint = "127.0.0.1:8083" # $SERVER_GRAPHQL_ENDPOINT
[ethereum]
chainID = "1" # $ETH_CHAIN_ID

1
go.mod
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@ -4,6 +4,7 @@ go 1.13
require (
github.com/ethereum/go-ethereum v1.9.11
github.com/graph-gophers/graphql-go v0.0.0-20201003130358-c5bdf3b1108e
github.com/ipfs/go-block-format v0.0.2
github.com/ipfs/go-cid v0.0.5
github.com/ipfs/go-ipfs-blockstore v1.0.0

2
go.sum
View File

@ -224,6 +224,8 @@ github.com/gorilla/websocket v1.4.1/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/ad
github.com/gorilla/websocket v1.4.2 h1:+/TMaTYc4QFitKJxsQ7Yye35DkWvkdLcvGKqM+x0Ufc=
github.com/gorilla/websocket v1.4.2/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
github.com/graph-gophers/graphql-go v0.0.0-20191115155744-f33e81362277/go.mod h1:9CQHMSxwO4MprSdzoIEobiHpoLtHm77vfxsvsIN5Vuc=
github.com/graph-gophers/graphql-go v0.0.0-20201003130358-c5bdf3b1108e h1:IpssFbpfPSx/3c7x601Npx+UOQ4tqd0Rk4sObCQ+zlQ=
github.com/graph-gophers/graphql-go v0.0.0-20201003130358-c5bdf3b1108e/go.mod h1:9CQHMSxwO4MprSdzoIEobiHpoLtHm77vfxsvsIN5Vuc=
github.com/gregjones/httpcache v0.0.0-20180305231024-9cad4c3443a7/go.mod h1:FecbI9+v66THATjSRHfNgh1IVFe/9kFxbXtjV0ctIMA=
github.com/grpc-ecosystem/go-grpc-middleware v1.0.0/go.mod h1:FiyG127CGDf3tlThmgyCl78X/SZQqEOJBCDaAfeWzPs=
github.com/grpc-ecosystem/go-grpc-prometheus v1.2.0/go.mod h1:8NvIoxWQoOIhqOTXgfV/d3M/q6VIi02HzZEHgUlZvzk=

6
pkg/eth/api.go
View File

@ -145,11 +145,7 @@ func (pea *PublicEthAPI) getLogs(ctx context.Context, crit ethereum.FilterQuery)
startingBlock := crit.FromBlock
endingBlock := crit.ToBlock
if startingBlock == nil {
startingBlockInt, err := pea.B.Retriever.RetrieveFirstBlockNumber()
if err != nil {
return nil, err
}
startingBlock = big.NewInt(startingBlockInt)
startingBlock = common.Big0
}
if endingBlock == nil {
endingBlockInt, err := pea.B.Retriever.RetrieveLastBlockNumber()

332
pkg/eth/backend.go
View File

@ -21,6 +21,9 @@ import (
"errors"
"math/big"
"github.com/ethereum/go-ethereum/core/bloombits"
"github.com/ethereum/go-ethereum/event"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/common/hexutil"
"github.com/ethereum/go-ethereum/common/math"
@ -36,7 +39,6 @@ import (
"github.com/ethereum/go-ethereum/rpc"
ipfsethdb "github.com/vulcanize/pg-ipfs-ethdb"
"github.com/vulcanize/ipld-eth-indexer/pkg/ipfs"
"github.com/vulcanize/ipld-eth-indexer/pkg/postgres"
"github.com/vulcanize/ipld-eth-server/pkg/shared"
)
@ -53,6 +55,12 @@ const (
RetrieveCanonicalHeaderByNumber = `SELECT cid, data FROM eth.header_cids
INNER JOIN public.blocks ON (header_cids.mh_key = blocks.key)
WHERE id = (SELECT canonical_header($1))`
RetrieveTD = `SELECT td FROM eth.header_cids
WHERE header_cids.block_hash = $1`
RetrieveRPCTransaction = `SELECT blocks.data, block_hash, block_number, index FROM public.blocks, eth.transaction_cids, eth.header_cids
WHERE blocks.key = transaction_cids.mh_key
AND transaction_cids.header_id = header_cids.id
AND transaction_cids.tx_hash = $1`
)
type Backend struct {
@ -92,6 +100,11 @@ func NewEthBackend(db *postgres.DB, c *Config) (*Backend, error) {
}, nil
}
// ChainDb returns the backend's underlying chain database
func (b *Backend) ChainDb() ethdb.Database {
return b.EthDB
}
// HeaderByNumber gets the canonical header for the provided block number
func (b *Backend) HeaderByNumber(ctx context.Context, blockNumber rpc.BlockNumber) (*types.Header, error) {
var err error
@ -133,12 +146,43 @@ func (b *Backend) HeaderByHash(ctx context.Context, hash common.Hash) (*types.He
return header, rlp.DecodeBytes(headerRLP, header)
}
// HeaderByNumberOrHash gets the header for the provided block hash or number
func (b *Backend) HeaderByNumberOrHash(ctx context.Context, blockNrOrHash rpc.BlockNumberOrHash) (*types.Header, error) {
if blockNr, ok := blockNrOrHash.Number(); ok {
return b.HeaderByNumber(ctx, blockNr)
}
if hash, ok := blockNrOrHash.Hash(); ok {
header, err := b.HeaderByHash(ctx, hash)
if err != nil {
return nil, err
}
if header == nil {
return nil, errors.New("header for hash not found")
}
if blockNrOrHash.RequireCanonical && b.GetCanonicalHash(header.Number.Uint64()) != hash {
return nil, errors.New("hash is not currently canonical")
}
return header, nil
}
return nil, errors.New("invalid arguments; neither block nor hash specified")
}
// rpcMarshalHeader uses the generalized output filler, then adds the total difficulty field, which requires
// a `PublicEthAPI`.
func (pea *PublicEthAPI) rpcMarshalHeader(header *types.Header) (map[string]interface{}, error) {
fields := RPCMarshalHeader(header)
td, err := pea.B.GetTd(header.Hash())
if err != nil {
return nil, err
}
fields["totalDifficulty"] = (*hexutil.Big)(td)
return fields, nil
}
// GetTd gets the total difficulty at the given block hash
func (b *Backend) GetTd(blockHash common.Hash) (*big.Int, error) {
pgStr := `SELECT td FROM eth.header_cids
WHERE header_cids.block_hash = $1`
var tdStr string
err := b.DB.Get(&tdStr, pgStr, blockHash.String())
err := b.DB.Get(&tdStr, RetrieveTD, blockHash.String())
if err != nil {
return nil, err
}
@ -149,21 +193,38 @@ func (b *Backend) GetTd(blockHash common.Hash) (*big.Int, error) {
return td, nil
}
// GetLogs returns all the logs for the given block hash
func (b *Backend) GetLogs(ctx context.Context, hash common.Hash) ([][]*types.Log, error) {
_, receiptBytes, err := b.IPLDRetriever.RetrieveReceiptsByBlockHash(hash)
// CurrentBlock returns the current block
func (b *Backend) CurrentBlock() *types.Block {
block, _ := b.BlockByNumber(context.Background(), rpc.LatestBlockNumber)
return block
}
// BlockByNumberOrHash returns block by number or hash
func (b *Backend) BlockByNumberOrHash(ctx context.Context, blockNrOrHash rpc.BlockNumberOrHash) (*types.Block, error) {
if blockNr, ok := blockNrOrHash.Number(); ok {
return b.BlockByNumber(ctx, blockNr)
}
if hash, ok := blockNrOrHash.Hash(); ok {
header, err := b.HeaderByHash(ctx, hash)
if err != nil {
return nil, err
}
logs := make([][]*types.Log, len(receiptBytes))
for i, rctBytes := range receiptBytes {
var rct types.Receipt
if err := rlp.DecodeBytes(rctBytes, &rct); err != nil {
if header == nil {
return nil, errors.New("header for hash not found")
}
if blockNrOrHash.RequireCanonical && b.GetCanonicalHash(header.Number.Uint64()) != hash {
return nil, errors.New("hash is not currently canonical")
}
block, err := b.BlockByHash(ctx, hash)
if err != nil {
return nil, err
}
logs[i] = rct.Logs
if block == nil {
return nil, errors.New("header found, but block body is missing")
}
return logs, nil
return block, nil
}
return nil, errors.New("invalid arguments; neither block nor hash specified")
}
// BlockByNumber returns the requested canonical block.
@ -354,11 +415,7 @@ func (b *Backend) GetTransaction(ctx context.Context, txHash common.Hash) (*type
BlockNumber uint64 `db:"block_number"`
Index uint64 `db:"index"`
}
pgStr := `SELECT blocks.data, block_hash, block_number, index FROM public.blocks, eth.transaction_cids, eth.header_cids
WHERE blocks.key = transaction_cids.mh_key
AND transaction_cids.header_id = header_cids.id
AND transaction_cids.tx_hash = $1`
if err := b.DB.Get(&tempTxStruct, pgStr, txHash.String()); err != nil {
if err := b.DB.Get(&tempTxStruct, RetrieveRPCTransaction, txHash.String()); err != nil {
return nil, common.Hash{}, 0, 0, err
}
var transaction types.Transaction
@ -368,88 +425,38 @@ func (b *Backend) GetTransaction(ctx context.Context, txHash common.Hash) (*type
return &transaction, common.HexToHash(tempTxStruct.BlockHash), tempTxStruct.BlockNumber, tempTxStruct.Index, nil
}
// extractLogsOfInterest returns logs from the receipt IPLD
func extractLogsOfInterest(rctIPLDs []ipfs.BlockModel, wantedTopics [][]string) ([]*types.Log, error) {
var logs []*types.Log
for _, rctIPLD := range rctIPLDs {
rctRLP := rctIPLD
var rct types.Receipt
if err := rlp.DecodeBytes(rctRLP.Data, &rct); err != nil {
return nil, err
}
for _, log := range rct.Logs {
if wanted := wantedLog(wantedTopics, log.Topics); wanted == true {
logs = append(logs, log)
}
}
}
return logs, nil
}
// returns true if the log matches on the filter
func wantedLog(wantedTopics [][]string, actualTopics []common.Hash) bool {
// actualTopics will always have length <= 4
// wantedTopics will always have length 4
matches := 0
for i, actualTopic := range actualTopics {
// If we have topics in this filter slot, count as a match if the actualTopic matches one of the ones in this filter slot
if len(wantedTopics[i]) > 0 {
matches += sliceContainsHash(wantedTopics[i], actualTopic)
} else {
// Filter slot is empty, not matching any topics at this slot => counts as a match
matches++
}
}
if matches == len(actualTopics) {
return true
}
return false
}
// returns 1 if the slice contains the hash, 0 if it does not
func sliceContainsHash(slice []string, hash common.Hash) int {
for _, str := range slice {
if str == hash.String() {
return 1
}
}
return 0
}
// rpcMarshalHeader uses the generalized output filler, then adds the total difficulty field, which requires
// a `PublicEthAPI`.
func (pea *PublicEthAPI) rpcMarshalHeader(header *types.Header) (map[string]interface{}, error) {
fields := RPCMarshalHeader(header)
td, err := pea.B.GetTd(header.Hash())
// GetReceipts retrieves receipts for provided block hash
func (b *Backend) GetReceipts(ctx context.Context, hash common.Hash) (types.Receipts, error) {
_, receiptBytes, err := b.IPLDRetriever.RetrieveReceiptsByBlockHash(hash)
if err != nil {
return nil, err
}
fields["totalDifficulty"] = (*hexutil.Big)(td)
return fields, nil
rcts := make(types.Receipts, 0, len(receiptBytes))
for i, rctBytes := range receiptBytes {
rct := new(types.Receipt)
if err := rlp.DecodeBytes(rctBytes, rct); err != nil {
return nil, err
}
rcts[i] = rct
}
return rcts, nil
}
// RPCMarshalHeader converts the given header to the RPC output.
// This function is eth/internal so we have to make our own version here...
func RPCMarshalHeader(head *types.Header) map[string]interface{} {
return map[string]interface{}{
"number": (*hexutil.Big)(head.Number),
"hash": head.Hash(),
"parentHash": head.ParentHash,
"nonce": head.Nonce,
"mixHash": head.MixDigest,
"sha3Uncles": head.UncleHash,
"logsBloom": head.Bloom,
"stateRoot": head.Root,
"miner": head.Coinbase,
"difficulty": (*hexutil.Big)(head.Difficulty),
"extraData": hexutil.Bytes(head.Extra),
"size": hexutil.Uint64(head.Size()),
"gasLimit": hexutil.Uint64(head.GasLimit),
"gasUsed": hexutil.Uint64(head.GasUsed),
"timestamp": hexutil.Uint64(head.Time),
"transactionsRoot": head.TxHash,
"receiptsRoot": head.ReceiptHash,
// GetLogs returns all the logs for the given block hash
func (b *Backend) GetLogs(ctx context.Context, hash common.Hash) ([][]*types.Log, error) {
_, receiptBytes, err := b.IPLDRetriever.RetrieveReceiptsByBlockHash(hash)
if err != nil {
return nil, err
}
logs := make([][]*types.Log, len(receiptBytes))
for i, rctBytes := range receiptBytes {
var rct types.Receipt
if err := rlp.DecodeBytes(rctBytes, &rct); err != nil {
return nil, err
}
logs[i] = rct.Logs
}
return logs, nil
}
// rpcMarshalBlock uses the generalized output filler, then adds the total difficulty field, which requires
@ -467,110 +474,6 @@ func (pea *PublicEthAPI) rpcMarshalBlock(b *types.Block, inclTx bool, fullTx boo
return fields, err
}
// RPCMarshalBlock converts the given block to the RPC output which depends on fullTx. If inclTx is true transactions are
// returned. When fullTx is true the returned block contains full transaction details, otherwise it will only contain
// transaction hashes.
func RPCMarshalBlock(block *types.Block, inclTx bool, fullTx bool) (map[string]interface{}, error) {
fields := RPCMarshalHeader(block.Header())
fields["size"] = hexutil.Uint64(block.Size())
if inclTx {
formatTx := func(tx *types.Transaction) (interface{}, error) {
return tx.Hash(), nil
}
if fullTx {
formatTx = func(tx *types.Transaction) (interface{}, error) {
return NewRPCTransactionFromBlockHash(block, tx.Hash()), nil
}
}
txs := block.Transactions()
transactions := make([]interface{}, len(txs))
var err error
for i, tx := range txs {
if transactions[i], err = formatTx(tx); err != nil {
return nil, err
}
}
fields["transactions"] = transactions
}
uncles := block.Uncles()
uncleHashes := make([]common.Hash, len(uncles))
for i, uncle := range uncles {
uncleHashes[i] = uncle.Hash()
}
fields["uncles"] = uncleHashes
return fields, nil
}
// NewRPCTransactionFromBlockHash returns a transaction that will serialize to the RPC representation.
func NewRPCTransactionFromBlockHash(b *types.Block, hash common.Hash) *RPCTransaction {
for idx, tx := range b.Transactions() {
if tx.Hash() == hash {
return newRPCTransactionFromBlockIndex(b, uint64(idx))
}
}
return nil
}
// newRPCTransactionFromBlockIndex returns a transaction that will serialize to the RPC representation.
func newRPCTransactionFromBlockIndex(b *types.Block, index uint64) *RPCTransaction {
txs := b.Transactions()
if index >= uint64(len(txs)) {
return nil
}
return NewRPCTransaction(txs[index], b.Hash(), b.NumberU64(), index)
}
// RPCTransaction represents a transaction that will serialize to the RPC representation of a transaction
type RPCTransaction struct {
BlockHash *common.Hash `json:"blockHash"`
BlockNumber *hexutil.Big `json:"blockNumber"`
From common.Address `json:"from"`
Gas hexutil.Uint64 `json:"gas"`
GasPrice *hexutil.Big `json:"gasPrice"`
Hash common.Hash `json:"hash"`
Input hexutil.Bytes `json:"input"`
Nonce hexutil.Uint64 `json:"nonce"`
To *common.Address `json:"to"`
TransactionIndex *hexutil.Uint64 `json:"transactionIndex"`
Value *hexutil.Big `json:"value"`
V *hexutil.Big `json:"v"`
R *hexutil.Big `json:"r"`
S *hexutil.Big `json:"s"`
}
// NewRPCTransaction returns a transaction that will serialize to the RPC
// representation, with the given location metadata set (if available).
func NewRPCTransaction(tx *types.Transaction, blockHash common.Hash, blockNumber uint64, index uint64) *RPCTransaction {
var signer types.Signer = types.FrontierSigner{}
if tx.Protected() {
signer = types.NewEIP155Signer(tx.ChainId())
}
from, _ := types.Sender(signer, tx)
v, r, s := tx.RawSignatureValues()
result := &RPCTransaction{
From: from,
Gas: hexutil.Uint64(tx.Gas()),
GasPrice: (*hexutil.Big)(tx.GasPrice()),
Hash: tx.Hash(),
Input: hexutil.Bytes(tx.Data()), // somehow this is ending up `nil`
Nonce: hexutil.Uint64(tx.Nonce()),
To: tx.To(),
Value: (*hexutil.Big)(tx.Value()),
V: (*hexutil.Big)(v),
R: (*hexutil.Big)(r),
S: (*hexutil.Big)(s),
}
if blockHash != (common.Hash{}) {
result.BlockHash = &blockHash
result.BlockNumber = (*hexutil.Big)(new(big.Int).SetUint64(blockNumber))
result.TransactionIndex = (*hexutil.Uint64)(&index)
}
return result
}
// StateAndHeaderByNumberOrHash returns the statedb and header for the provided block number or hash
func (b *Backend) StateAndHeaderByNumberOrHash(ctx context.Context, blockNrOrHash rpc.BlockNumberOrHash) (*state.StateDB, *types.Header, error) {
if blockNr, ok := blockNrOrHash.Number(); ok {
@ -652,3 +555,36 @@ func (b *Backend) GetHeader(hash common.Hash, height uint64) *types.Header {
}
return header
}
// RPCGasCap returns the configured gas cap for the rpc server
func (b *Backend) RPCGasCap() *big.Int {
return b.Config.RPCGasCap
}
func (b *Backend) SubscribeNewTxsEvent(chan<- core.NewTxsEvent) event.Subscription {
panic("implement me")
}
func (b *Backend) SubscribeChainEvent(ch chan<- core.ChainEvent) event.Subscription {
panic("implement me")
}
func (b *Backend) SubscribeRemovedLogsEvent(ch chan<- core.RemovedLogsEvent) event.Subscription {
panic("implement me")
}
func (b *Backend) SubscribeLogsEvent(ch chan<- []*types.Log) event.Subscription {
panic("implement me")
}
func (b *Backend) SubscribePendingLogsEvent(ch chan<- []*types.Log) event.Subscription {
panic("implement me")
}
func (b *Backend) BloomStatus() (uint64, uint64) {
panic("implement me")
}
func (b *Backend) ServiceFilter(ctx context.Context, session *bloombits.MatcherSession) {
panic("implement me")
}

185
pkg/eth/backend_utils.go Normal file
View File

@ -0,0 +1,185 @@
// VulcanizeDB
// Copyright © 2019 Vulcanize
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package eth
import (
"math/big"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/common/hexutil"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/rlp"
"github.com/vulcanize/ipld-eth-indexer/pkg/ipfs"
)
// RPCMarshalHeader converts the given header to the RPC output.
// This function is eth/internal so we have to make our own version here...
func RPCMarshalHeader(head *types.Header) map[string]interface{} {
return map[string]interface{}{
"number": (*hexutil.Big)(head.Number),
"hash": head.Hash(),
"parentHash": head.ParentHash,
"nonce": head.Nonce,
"mixHash": head.MixDigest,
"sha3Uncles": head.UncleHash,
"logsBloom": head.Bloom,
"stateRoot": head.Root,
"miner": head.Coinbase,
"difficulty": (*hexutil.Big)(head.Difficulty),
"extraData": hexutil.Bytes(head.Extra),
"size": hexutil.Uint64(head.Size()),
"gasLimit": hexutil.Uint64(head.GasLimit),
"gasUsed": hexutil.Uint64(head.GasUsed),
"timestamp": hexutil.Uint64(head.Time),
"transactionsRoot": head.TxHash,
"receiptsRoot": head.ReceiptHash,
}
}
// RPCMarshalBlock converts the given block to the RPC output which depends on fullTx. If inclTx is true transactions are
// returned. When fullTx is true the returned block contains full transaction details, otherwise it will only contain
// transaction hashes.
func RPCMarshalBlock(block *types.Block, inclTx bool, fullTx bool) (map[string]interface{}, error) {
fields := RPCMarshalHeader(block.Header())
fields["size"] = hexutil.Uint64(block.Size())
if inclTx {
formatTx := func(tx *types.Transaction) (interface{}, error) {
return tx.Hash(), nil
}
if fullTx {
formatTx = func(tx *types.Transaction) (interface{}, error) {
return NewRPCTransactionFromBlockHash(block, tx.Hash()), nil
}
}
txs := block.Transactions()
transactions := make([]interface{}, len(txs))
var err error
for i, tx := range txs {
if transactions[i], err = formatTx(tx); err != nil {
return nil, err
}
}
fields["transactions"] = transactions
}
uncles := block.Uncles()
uncleHashes := make([]common.Hash, len(uncles))
for i, uncle := range uncles {
uncleHashes[i] = uncle.Hash()
}
fields["uncles"] = uncleHashes
return fields, nil
}
// NewRPCTransactionFromBlockHash returns a transaction that will serialize to the RPC representation.
func NewRPCTransactionFromBlockHash(b *types.Block, hash common.Hash) *RPCTransaction {
for idx, tx := range b.Transactions() {
if tx.Hash() == hash {
return newRPCTransactionFromBlockIndex(b, uint64(idx))
}
}
return nil
}
// NewRPCTransaction returns a transaction that will serialize to the RPC
// representation, with the given location metadata set (if available).
func NewRPCTransaction(tx *types.Transaction, blockHash common.Hash, blockNumber uint64, index uint64) *RPCTransaction {
var signer types.Signer = types.FrontierSigner{}
if tx.Protected() {
signer = types.NewEIP155Signer(tx.ChainId())
}
from, _ := types.Sender(signer, tx)
v, r, s := tx.RawSignatureValues()
result := &RPCTransaction{
From: from,
Gas: hexutil.Uint64(tx.Gas()),
GasPrice: (*hexutil.Big)(tx.GasPrice()),
Hash: tx.Hash(),
Input: hexutil.Bytes(tx.Data()), // somehow this is ending up `nil`
Nonce: hexutil.Uint64(tx.Nonce()),
To: tx.To(),
Value: (*hexutil.Big)(tx.Value()),
V: (*hexutil.Big)(v),
R: (*hexutil.Big)(r),
S: (*hexutil.Big)(s),
}
if blockHash != (common.Hash{}) {
result.BlockHash = &blockHash
result.BlockNumber = (*hexutil.Big)(new(big.Int).SetUint64(blockNumber))
result.TransactionIndex = (*hexutil.Uint64)(&index)
}
return result
}
// newRPCTransactionFromBlockIndex returns a transaction that will serialize to the RPC representation.
func newRPCTransactionFromBlockIndex(b *types.Block, index uint64) *RPCTransaction {
txs := b.Transactions()
if index >= uint64(len(txs)) {
return nil
}
return NewRPCTransaction(txs[index], b.Hash(), b.NumberU64(), index)
}
// extractLogsOfInterest returns logs from the receipt IPLD
func extractLogsOfInterest(rctIPLDs []ipfs.BlockModel, wantedTopics [][]string) ([]*types.Log, error) {
var logs []*types.Log
for _, rctIPLD := range rctIPLDs {
rctRLP := rctIPLD
var rct types.Receipt
if err := rlp.DecodeBytes(rctRLP.Data, &rct); err != nil {
return nil, err
}
for _, log := range rct.Logs {
if wanted := wantedLog(wantedTopics, log.Topics); wanted == true {
logs = append(logs, log)
}
}
}
return logs, nil
}
// returns true if the log matches on the filter
func wantedLog(wantedTopics [][]string, actualTopics []common.Hash) bool {
// actualTopics will always have length <= 4
// wantedTopics will always have length 4
matches := 0
for i, actualTopic := range actualTopics {
// If we have topics in this filter slot, count as a match if the actualTopic matches one of the ones in this filter slot
if len(wantedTopics[i]) > 0 {
matches += sliceContainsHash(wantedTopics[i], actualTopic)
} else {
// Filter slot is empty, not matching any topics at this slot => counts as a match
matches++
}
}
if matches == len(actualTopics) {
return true
}
return false
}
// returns 1 if the slice contains the hash, 0 if it does not
func sliceContainsHash(slice []string, hash common.Hash) int {
for _, str := range slice {
if str == hash.String() {
return 1
}
}
return 0
}

47
pkg/eth/interfaces.go Normal file
View File

@ -0,0 +1,47 @@
// VulcanizeDB
// Copyright © 2019 Vulcanize
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package eth
import (
"context"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core"
"github.com/ethereum/go-ethereum/core/bloombits"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/ethdb"
"github.com/ethereum/go-ethereum/event"
"github.com/ethereum/go-ethereum/rpc"
)
// FilterBackend is the geth interface we need to satisfy to use their filters
type FilterBackend interface {
ChainDb() ethdb.Database
HeaderByNumber(ctx context.Context, blockNr rpc.BlockNumber) (*types.Header, error)
HeaderByHash(ctx context.Context, blockHash common.Hash) (*types.Header, error)
GetReceipts(ctx context.Context, blockHash common.Hash) (types.Receipts, error)
GetLogs(ctx context.Context, blockHash common.Hash) ([][]*types.Log, error)
SubscribeNewTxsEvent(chan<- core.NewTxsEvent) event.Subscription
SubscribeChainEvent(ch chan<- core.ChainEvent) event.Subscription
SubscribeRemovedLogsEvent(ch chan<- core.RemovedLogsEvent) event.Subscription
SubscribeLogsEvent(ch chan<- []*types.Log) event.Subscription
SubscribePendingLogsEvent(ch chan<- []*types.Log) event.Subscription
BloomStatus() (uint64, uint64)
ServiceFilter(ctx context.Context, session *bloombits.MatcherSession)
}

64
pkg/eth/ipld_retriever.go
View File

@ -96,8 +96,8 @@ const (
)
type ipldResult struct {
cid string `db:"cid"`
data []byte `db:"data"`
CID string `db:"cid"`
Data []byte `db:"data"`
}
type IPLDRetriever struct {
db *postgres.DB
@ -122,8 +122,8 @@ func (r *IPLDRetriever) RetrieveHeadersByHashes(hashes []common.Hash) ([]string,
cids := make([]string, len(headerResults))
headers := make([][]byte, len(headerResults))
for i, res := range headerResults {
cids[i] = res.cid
headers[i] = res.data
cids[i] = res.CID
headers[i] = res.Data
}
return cids, headers, nil
}
@ -138,8 +138,8 @@ func (r *IPLDRetriever) RetrieveHeadersByBlockNumber(number uint64) ([]string, [
cids := make([]string, len(headerResults))
headers := make([][]byte, len(headerResults))
for i, res := range headerResults {
cids[i] = res.cid
headers[i] = res.data
cids[i] = res.CID
headers[i] = res.Data
}
return cids, headers, nil
}
@ -147,7 +147,7 @@ func (r *IPLDRetriever) RetrieveHeadersByBlockNumber(number uint64) ([]string, [
// RetrieveHeaderByHash returns the cid and rlp bytes for the header corresponding to the provided block hash
func (r *IPLDRetriever) RetrieveHeaderByHash(hash common.Hash) (string, []byte, error) {
headerResult := new(ipldResult)
return headerResult.cid, headerResult.data, r.db.Get(headerResult, RetrieveHeaderByHashPgStr, hash.Hex())
return headerResult.CID, headerResult.Data, r.db.Get(headerResult, RetrieveHeaderByHashPgStr, hash.Hex())
}
// RetrieveUnclesByHashes returns the cids and rlp bytes for the uncles corresponding to the provided uncle hashes
@ -163,8 +163,8 @@ func (r *IPLDRetriever) RetrieveUnclesByHashes(hashes []common.Hash) ([]string,
cids := make([]string, len(uncleResults))
uncles := make([][]byte, len(uncleResults))
for i, res := range uncleResults {
cids[i] = res.cid
uncles[i] = res.data
cids[i] = res.CID
uncles[i] = res.Data
}
return cids, uncles, nil
}
@ -178,8 +178,8 @@ func (r *IPLDRetriever) RetrieveUnclesByBlockHash(hash common.Hash) ([]string, [
cids := make([]string, len(uncleResults))
uncles := make([][]byte, len(uncleResults))
for i, res := range uncleResults {
cids[i] = res.cid
uncles[i] = res.data
cids[i] = res.CID
uncles[i] = res.Data
}
return cids, uncles, nil
}
@ -193,8 +193,8 @@ func (r *IPLDRetriever) RetrieveUnclesByBlockNumber(number uint64) ([]string, []
cids := make([]string, len(uncleResults))
uncles := make([][]byte, len(uncleResults))
for i, res := range uncleResults {
cids[i] = res.cid
uncles[i] = res.data
cids[i] = res.CID
uncles[i] = res.Data
}
return cids, uncles, nil
}
@ -202,7 +202,7 @@ func (r *IPLDRetriever) RetrieveUnclesByBlockNumber(number uint64) ([]string, []
// RetrieveUncleByHash returns the cid and rlp bytes for the uncle corresponding to the provided uncle hash
func (r *IPLDRetriever) RetrieveUncleByHash(hash common.Hash) (string, []byte, error) {
uncleResult := new(ipldResult)
return uncleResult.cid, uncleResult.data, r.db.Get(uncleResult, RetrieveUncleByHashPgStr, hash.Hex())
return uncleResult.CID, uncleResult.Data, r.db.Get(uncleResult, RetrieveUncleByHashPgStr, hash.Hex())
}
// RetrieveTransactionsByHashes returns the cids and rlp bytes for the transactions corresponding to the provided tx hashes
@ -218,8 +218,8 @@ func (r *IPLDRetriever) RetrieveTransactionsByHashes(hashes []common.Hash) ([]st
cids := make([]string, len(txResults))
txs := make([][]byte, len(txResults))
for i, res := range txResults {
cids[i] = res.cid
txs[i] = res.data
cids[i] = res.CID
txs[i] = res.Data
}
return cids, txs, nil
}
@ -233,8 +233,8 @@ func (r *IPLDRetriever) RetrieveTransactionsByBlockHash(hash common.Hash) ([]str
cids := make([]string, len(txResults))
txs := make([][]byte, len(txResults))
for i, res := range txResults {
cids[i] = res.cid
txs[i] = res.data
cids[i] = res.CID
txs[i] = res.Data
}
return cids, txs, nil
}
@ -248,8 +248,8 @@ func (r *IPLDRetriever) RetrieveTransactionsByBlockNumber(number uint64) ([]stri
cids := make([]string, len(txResults))
txs := make([][]byte, len(txResults))
for i, res := range txResults {
cids[i] = res.cid
txs[i] = res.data
cids[i] = res.CID
txs[i] = res.Data
}
return cids, txs, nil
}
@ -257,7 +257,7 @@ func (r *IPLDRetriever) RetrieveTransactionsByBlockNumber(number uint64) ([]stri
// RetrieveTransactionByTxHash returns the cid and rlp bytes for the transaction corresponding to the provided tx hash
func (r *IPLDRetriever) RetrieveTransactionByTxHash(hash common.Hash) (string, []byte, error) {
txResult := new(ipldResult)
return txResult.cid, txResult.data, r.db.Get(txResult, RetrieveTransactionByHashPgStr, hash.Hex())
return txResult.CID, txResult.Data, r.db.Get(txResult, RetrieveTransactionByHashPgStr, hash.Hex())
}
// RetrieveReceiptsByTxHashes returns the cids and rlp bytes for the receipts corresponding to the provided tx hashes
@ -273,8 +273,8 @@ func (r *IPLDRetriever) RetrieveReceiptsByTxHashes(hashes []common.Hash) ([]stri
cids := make([]string, len(rctResults))
rcts := make([][]byte, len(rctResults))
for i, res := range rctResults {
cids[i] = res.cid
rcts[i] = res.data
cids[i] = res.CID
rcts[i] = res.Data
}
return cids, rcts, nil
}
@ -288,8 +288,8 @@ func (r *IPLDRetriever) RetrieveReceiptsByBlockHash(hash common.Hash) ([]string,
cids := make([]string, len(rctResults))
rcts := make([][]byte, len(rctResults))
for i, res := range rctResults {
cids[i] = res.cid
rcts[i] = res.data
cids[i] = res.CID
rcts[i] = res.Data
}
return cids, rcts, nil
}
@ -303,8 +303,8 @@ func (r *IPLDRetriever) RetrieveReceiptsByBlockNumber(number uint64) ([]string,
cids := make([]string, len(rctResults))
rcts := make([][]byte, len(rctResults))
for i, res := range rctResults {
cids[i] = res.cid
rcts[i] = res.data
cids[i] = res.CID
rcts[i] = res.Data
}
return cids, rcts, nil
}
@ -312,7 +312,7 @@ func (r *IPLDRetriever) RetrieveReceiptsByBlockNumber(number uint64) ([]string,
// RetrieveReceiptByHash returns the cid and rlp bytes for the receipt corresponding to the provided tx hash
func (r *IPLDRetriever) RetrieveReceiptByHash(hash common.Hash) (string, []byte, error) {
rctResult := new(ipldResult)
return rctResult.cid, rctResult.data, r.db.Get(rctResult, RetrieveReceiptByTxHashPgStr, hash.Hex())
return rctResult.CID, rctResult.Data, r.db.Get(rctResult, RetrieveReceiptByTxHashPgStr, hash.Hex())
}
// RetrieveAccountByAddressAndBlockHash returns the cid and rlp bytes for the account corresponding to the provided address and block hash
@ -323,13 +323,13 @@ func (r *IPLDRetriever) RetrieveAccountByAddressAndBlockHash(address common.Addr
return "", nil, err
}
var i []interface{}
if err := rlp.DecodeBytes(accountResult.data, &i); err != nil {
if err := rlp.DecodeBytes(accountResult.Data, &i); err != nil {
return "", nil, fmt.Errorf("error decoding state leaf node rlp: %s", err.Error())
}
if len(i) != 2 {
return "", nil, fmt.Errorf("eth IPLDRetriever expected state leaf node rlp to decode into two elements")
}
return accountResult.cid, i[1].([]byte), nil
return accountResult.CID, i[1].([]byte), nil
}
// RetrieveAccountByAddressAndBlockNumber returns the cid and rlp bytes for the account corresponding to the provided address and block number
@ -343,9 +343,9 @@ func (r *IPLDRetriever) RetrieveAccountByAddressAndBlockNumber(address common.Ad
cids := make([]string, len(accountResults))
accounts := make([][]byte, len(accountResults))
for i, res := range accountResults {
cids[i] = res.cid
cids[i] = res.CID
var iface []interface{}
if err := rlp.DecodeBytes(res.data, &iface); err != nil {
if err := rlp.DecodeBytes(res.Data, &iface); err != nil {
return nil, nil, fmt.Errorf("error decoding state leaf node rlp: %s", err.Error())
}
if len(iface) != 2 {

19
pkg/eth/types.go
View File

@ -20,11 +20,30 @@ import (
"math/big"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/common/hexutil"
"github.com/ethereum/go-ethereum/statediff"
"github.com/vulcanize/ipld-eth-indexer/pkg/eth"
"github.com/vulcanize/ipld-eth-indexer/pkg/ipfs"
)
// RPCTransaction represents a transaction that will serialize to the RPC representation of a transaction
type RPCTransaction struct {
BlockHash *common.Hash `json:"blockHash"`
BlockNumber *hexutil.Big `json:"blockNumber"`
From common.Address `json:"from"`
Gas hexutil.Uint64 `json:"gas"`
GasPrice *hexutil.Big `json:"gasPrice"`
Hash common.Hash `json:"hash"`
Input hexutil.Bytes `json:"input"`
Nonce hexutil.Uint64 `json:"nonce"`
To *common.Address `json:"to"`
TransactionIndex *hexutil.Uint64 `json:"transactionIndex"`
Value *hexutil.Big `json:"value"`
V *hexutil.Big `json:"v"`
R *hexutil.Big `json:"r"`
S *hexutil.Big `json:"s"`
}
// IPLDs is used to package raw IPLD block data fetched from IPFS and returned by the server
// Returned by IPLDFetcher and ResponseFilterer
type IPLDs struct {

114
pkg/graphql/graphiql.go Normal file
View File

@ -0,0 +1,114 @@
// VulcanizeDB
// Copyright © 2020 Vulcanize
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package graphql
import (
"bytes"
"fmt"
"net/http"
)
// GraphiQL is an in-browser IDE for exploring GraphiQL APIs.
// This handler returns GraphiQL when requested.
//
// For more information, see https://github.com/graphql/graphiql.
type GraphiQL struct{}
func respond(w http.ResponseWriter, body []byte, code int) {
w.Header().Set("Content-Type", "application/json; charset=utf-8")
w.Header().Set("X-Content-Type-Options", "nosniff")
w.WriteHeader(code)
_, _ = w.Write(body)
}
func errorJSON(msg string) []byte {
buf := bytes.Buffer{}
fmt.Fprintf(&buf, `{"error": "%s"}`, msg)
return buf.Bytes()
}
func (h GraphiQL) ServeHTTP(w http.ResponseWriter, r *http.Request) {
if r.Method != "GET" {
respond(w, errorJSON("only GET requests are supported"), http.StatusMethodNotAllowed)
return
}
w.Header().Set("Content-Type", "text/html")
w.Write(graphiql)
}
var graphiql = []byte(`
<!DOCTYPE html>
<html>
<head>
<link
rel="icon"
type="image/png"
href="data:image/png;base64,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"
/>
<link
rel="stylesheet"
href="https://cdnjs.cloudflare.com/ajax/libs/graphiql/0.13.0/graphiql.css"
integrity="sha384-Qua2xoKBxcHOg1ivsKWo98zSI5KD/UuBpzMIg8coBd4/jGYoxeozCYFI9fesatT0"
crossorigin="anonymous"
/>
<script
src="https://cdnjs.cloudflare.com/ajax/libs/fetch/3.0.0/fetch.min.js"
integrity="sha384-5B8/4F9AQqp/HCHReGLSOWbyAOwnJsPrvx6C0+VPUr44Olzi99zYT1xbVh+ZanQJ"
crossorigin="anonymous"
></script>
<script
src="https://cdnjs.cloudflare.com/ajax/libs/react/16.8.5/umd/react.production.min.js"
integrity="sha384-dOCiLz3nZfHiJj//EWxjwSKSC6Z1IJtyIEK/b/xlHVNdVLXDYSesoxiZb94bbuGE"
crossorigin="anonymous"
></script>
<script
src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/16.8.5/umd/react-dom.production.min.js"
integrity="sha384-QI+ql5f+khgo3mMdCktQ3E7wUKbIpuQo8S5rA/3i1jg2rMsloCNyiZclI7sFQUGN"
crossorigin="anonymous"
></script>
<script
src="https://cdnjs.cloudflare.com/ajax/libs/graphiql/0.13.0/graphiql.min.js"
integrity="sha384-roSmzNmO4zJK9X4lwggDi4/oVy+9V4nlS1+MN8Taj7tftJy1GvMWyAhTNXdC/fFR"
crossorigin="anonymous"
></script>
</head>
<body style="width: 100%; height: 100%; margin: 0; overflow: hidden;">
<div id="graphiql" style="height: 100vh;">Loading...</div>
<script>
function fetchGQL(params) {
return fetch("/graphql", {
method: "post",
body: JSON.stringify(params),
credentials: "include",
}).then(function (resp) {
return resp.text();
}).then(function (body) {
try {
return JSON.parse(body);
} catch (error) {
return body;
}
});
}
ReactDOM.render(
React.createElement(GraphiQL, {fetcher: fetchGQL}),
document.getElementById("graphiql")
)
</script>
</body>
</html>
`)

942
pkg/graphql/graphql.go Normal file
View File

@ -0,0 +1,942 @@
// VulcanizeDB
// Copyright © 2020 Vulcanize
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
// Package graphql provides a GraphQL interface to Ethereum node data.
package graphql
import (
"context"
"errors"
"time"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/common/hexutil"
"github.com/ethereum/go-ethereum/core/rawdb"
"github.com/ethereum/go-ethereum/core/state"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/eth/filters"
"github.com/ethereum/go-ethereum/rpc"
"github.com/vulcanize/ipld-eth-server/pkg/eth"
)
var (
errBlockInvariant = errors.New("block objects must be instantiated with at least one of num or hash")
)
// Account represents an Ethereum account at a particular block.
type Account struct {
backend *eth.Backend
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)
return state, err
}
func (a *Account) Address(ctx context.Context) (common.Address, error) {
return a.address, nil
}
func (a *Account) Balance(ctx context.Context) (hexutil.Big, error) {
state, err := a.getState(ctx)
if err != nil {
return hexutil.Big{}, err
}
return hexutil.Big(*state.GetBalance(a.address)), nil
}
func (a *Account) TransactionCount(ctx context.Context) (hexutil.Uint64, error) {
state, err := a.getState(ctx)
if err != nil {
return 0, err
}
return hexutil.Uint64(state.GetNonce(a.address)), nil
}
func (a *Account) Code(ctx context.Context) (hexutil.Bytes, error) {
state, err := a.getState(ctx)
if err != nil {
return hexutil.Bytes{}, err
}
return hexutil.Bytes(state.GetCode(a.address)), nil
}
func (a *Account) Storage(ctx context.Context, args struct{ Slot common.Hash }) (common.Hash, error) {
state, err := a.getState(ctx)
if err != nil {
return common.Hash{}, err
}
return state.GetState(a.address, args.Slot), nil
}
// Log represents an individual log message. All arguments are mandatory.
type Log struct {
backend *eth.Backend
transaction *Transaction
log *types.Log
}
func (l *Log) Transaction(ctx context.Context) *Transaction {
return l.transaction
}
func (l *Log) Account(ctx context.Context, args BlockNumberArgs) *Account {
return &Account{
backend: l.backend,
address: l.log.Address,
blockNrOrHash: args.NumberOrLatest(),
}
}
func (l *Log) Index(ctx context.Context) int32 {
return int32(l.log.Index)
}
func (l *Log) Topics(ctx context.Context) []common.Hash {
return l.log.Topics
}
func (l *Log) Data(ctx context.Context) hexutil.Bytes {
return hexutil.Bytes(l.log.Data)
}
// Transaction represents an Ethereum transaction.
// backend and hash are mandatory; all others will be fetched when required.
type Transaction struct {
backend *eth.Backend
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 {
tx, blockHash, _, index := rawdb.ReadTransaction(t.backend.ChainDb(), t.hash)
if tx != nil {
t.tx = tx
blockNrOrHash := rpc.BlockNumberOrHashWithHash(blockHash, false)
t.block = &Block{
backend: t.backend,
numberOrHash: &blockNrOrHash,
}
t.index = index
}
}
return t.tx, nil
}
func (t *Transaction) Hash(ctx context.Context) common.Hash {
return t.hash
}
func (t *Transaction) InputData(ctx context.Context) (hexutil.Bytes, error) {
tx, err := t.resolve(ctx)
if err != nil || tx == nil {
return hexutil.Bytes{}, err
}
return hexutil.Bytes(tx.Data()), nil
}
func (t *Transaction) Gas(ctx context.Context) (hexutil.Uint64, error) {
tx, err := t.resolve(ctx)
if err != nil || tx == nil {
return 0, err
}
return hexutil.Uint64(tx.Gas()), nil
}
func (t *Transaction) GasPrice(ctx context.Context) (hexutil.Big, error) {
tx, err := t.resolve(ctx)
if err != nil || tx == nil {
return hexutil.Big{}, err
}
return hexutil.Big(*tx.GasPrice()), nil
}
func (t *Transaction) Value(ctx context.Context) (hexutil.Big, error) {
tx, err := t.resolve(ctx)
if err != nil || tx == nil {
return hexutil.Big{}, err
}
return hexutil.Big(*tx.Value()), nil
}
func (t *Transaction) Nonce(ctx context.Context) (hexutil.Uint64, error) {
tx, err := t.resolve(ctx)
if err != nil || tx == nil {
return 0, err
}
return hexutil.Uint64(tx.Nonce()), nil
}
func (t *Transaction) To(ctx context.Context, args BlockNumberArgs) (*Account, error) {
tx, err := t.resolve(ctx)
if err != nil || tx == nil {
return nil, err
}
to := tx.To()
if to == nil {
return nil, nil
}
return &Account{
backend: t.backend,
address: *to,
blockNrOrHash: args.NumberOrLatest(),
}, nil
}
func (t *Transaction) From(ctx context.Context, args BlockNumberArgs) (*Account, error) {
tx, err := t.resolve(ctx)
if err != nil || tx == nil {
return nil, err
}
var signer types.Signer = types.HomesteadSigner{}
if tx.Protected() {
signer = types.NewEIP155Signer(tx.ChainId())
}
from, _ := types.Sender(signer, tx)
return &Account{
backend: t.backend,
address: from,
blockNrOrHash: args.NumberOrLatest(),
}, nil
}
func (t *Transaction) Block(ctx context.Context) (*Block, error) {
if _, err := t.resolve(ctx); err != nil {
return nil, err
}
return t.block, nil
}
func (t *Transaction) Index(ctx context.Context) (*int32, error) {
if _, err := t.resolve(ctx); err != nil {
return nil, err
}
if t.block == nil {
return nil, nil
}
index := int32(t.index)
return &index, nil
}
// getReceipt returns the receipt associated with this transaction, if any.
func (t *Transaction) getReceipt(ctx context.Context) (*types.Receipt, error) {
if _, err := t.resolve(ctx); err != nil {
return nil, err
}
if t.block == nil {
return nil, nil
}
receipts, err := t.block.resolveReceipts(ctx)
if err != nil {
return nil, err
}
return receipts[t.index], nil
}
func (t *Transaction) Status(ctx context.Context) (*hexutil.Uint64, error) {
receipt, err := t.getReceipt(ctx)
if err != nil || receipt == nil {
return nil, err
}
ret := hexutil.Uint64(receipt.Status)
return &ret, nil
}
func (t *Transaction) GasUsed(ctx context.Context) (*hexutil.Uint64, error) {
receipt, err := t.getReceipt(ctx)
if err != nil || receipt == nil {
return nil, err
}
ret := hexutil.Uint64(receipt.GasUsed)
return &ret, nil
}
func (t *Transaction) CumulativeGasUsed(ctx context.Context) (*hexutil.Uint64, error) {
receipt, err := t.getReceipt(ctx)
if err != nil || receipt == nil {
return nil, err
}
ret := hexutil.Uint64(receipt.CumulativeGasUsed)
return &ret, nil
}
func (t *Transaction) CreatedContract(ctx context.Context, args BlockNumberArgs) (*Account, error) {
receipt, err := t.getReceipt(ctx)
if err != nil || receipt == nil || receipt.ContractAddress == (common.Address{}) {
return nil, err
}
return &Account{
backend: t.backend,
address: receipt.ContractAddress,
blockNrOrHash: args.NumberOrLatest(),
}, nil
}
func (t *Transaction) Logs(ctx context.Context) (*[]*Log, error) {
receipt, err := t.getReceipt(ctx)
if err != nil || receipt == nil {
return nil, err
}
ret := make([]*Log, 0, len(receipt.Logs))
for _, log := range receipt.Logs {
ret = append(ret, &Log{
backend: t.backend,
transaction: t,
log: log,
})
}
return &ret, nil
}
func (t *Transaction) R(ctx context.Context) (hexutil.Big, error) {
tx, err := t.resolve(ctx)
if err != nil || tx == nil {
return hexutil.Big{}, err
}
_, r, _ := tx.RawSignatureValues()
return hexutil.Big(*r), nil
}
func (t *Transaction) S(ctx context.Context) (hexutil.Big, error) {
tx, err := t.resolve(ctx)
if err != nil || tx == nil {
return hexutil.Big{}, err
}
_, _, s := tx.RawSignatureValues()
return hexutil.Big(*s), nil
}
func (t *Transaction) V(ctx context.Context) (hexutil.Big, error) {
tx, err := t.resolve(ctx)
if err != nil || tx == nil {
return hexutil.Big{}, err
}
v, _, _ := tx.RawSignatureValues()
return hexutil.Big(*v), nil
}
type BlockType int
// Block represents an Ethereum block.
// backend, and numberOrHash are mandatory. All other fields are lazily fetched
// when required.
type Block struct {
backend *eth.Backend
numberOrHash *rpc.BlockNumberOrHash
hash common.Hash
header *types.Header
block *types.Block
receipts []*types.Receipt
}
// resolve returns the internal Block object representing this block, fetching
// it if necessary.
func (b *Block) resolve(ctx context.Context) (*types.Block, error) {
if b.block != nil {
return b.block, nil
}
if b.numberOrHash == nil {
latest := rpc.BlockNumberOrHashWithNumber(rpc.LatestBlockNumber)
b.numberOrHash = &latest
}
var err error
b.block, err = b.backend.BlockByNumberOrHash(ctx, *b.numberOrHash)
if b.block != nil && b.header == nil {
b.header = b.block.Header()
if hash, ok := b.numberOrHash.Hash(); ok {
b.hash = hash
}
}
return b.block, err
}
// resolveHeader returns the internal Header object for this block, fetching it
// if necessary. Call this function instead of `resolve` unless you need the
// additional data (transactions and uncles).
func (b *Block) resolveHeader(ctx context.Context) (*types.Header, error) {
if b.numberOrHash == nil && b.hash == (common.Hash{}) {
return nil, errBlockInvariant
}
var err error
if b.header == nil {
if b.hash != (common.Hash{}) {
b.header, err = b.backend.HeaderByHash(ctx, b.hash)
} else {
b.header, err = b.backend.HeaderByNumberOrHash(ctx, *b.numberOrHash)
}
}
return b.header, err
}
// resolveReceipts returns the list of receipts for this block, fetching them
// if necessary.
func (b *Block) resolveReceipts(ctx context.Context) ([]*types.Receipt, error) {
if b.receipts == nil {
hash := b.hash
if hash == (common.Hash{}) {
header, err := b.resolveHeader(ctx)
if err != nil {
return nil, err
}
hash = header.Hash()
}
receipts, err := b.backend.GetReceipts(ctx, hash)
if err != nil {
return nil, err
}
b.receipts = []*types.Receipt(receipts)
}
return b.receipts, nil
}
func (b *Block) Number(ctx context.Context) (hexutil.Uint64, error) {
header, err := b.resolveHeader(ctx)
if err != nil {
return 0, err
}
return hexutil.Uint64(header.Number.Uint64()), nil
}
func (b *Block) Hash(ctx context.Context) (common.Hash, error) {
if b.hash == (common.Hash{}) {
header, err := b.resolveHeader(ctx)
if err != nil {
return common.Hash{}, err
}
b.hash = header.Hash()
}
return b.hash, nil
}
func (b *Block) GasLimit(ctx context.Context) (hexutil.Uint64, error) {
header, err := b.resolveHeader(ctx)
if err != nil {
return 0, err
}
return hexutil.Uint64(header.GasLimit), nil
}
func (b *Block) GasUsed(ctx context.Context) (hexutil.Uint64, error) {
header, err := b.resolveHeader(ctx)
if err != nil {
return 0, err
}
return hexutil.Uint64(header.GasUsed), nil
}
func (b *Block) Parent(ctx context.Context) (*Block, error) {
// If the block header hasn't been fetched, and we'll need it, fetch it.
if b.numberOrHash == nil && b.header == nil {
if _, err := b.resolveHeader(ctx); err != nil {
return nil, err
}
}
if b.header != nil && b.header.Number.Uint64() > 0 {
num := rpc.BlockNumberOrHashWithNumber(rpc.BlockNumber(b.header.Number.Uint64() - 1))
return &Block{
backend: b.backend,
numberOrHash: &num,
hash: b.header.ParentHash,
}, nil
}
return nil, nil
}
func (b *Block) Difficulty(ctx context.Context) (hexutil.Big, error) {
header, err := b.resolveHeader(ctx)
if err != nil {
return hexutil.Big{}, err
}
return hexutil.Big(*header.Difficulty), nil
}
func (b *Block) Timestamp(ctx context.Context) (hexutil.Uint64, error) {
header, err := b.resolveHeader(ctx)
if err != nil {
return 0, err
}
return hexutil.Uint64(header.Time), nil
}
func (b *Block) Nonce(ctx context.Context) (hexutil.Bytes, error) {
header, err := b.resolveHeader(ctx)
if err != nil {
return hexutil.Bytes{}, err
}
return hexutil.Bytes(header.Nonce[:]), nil
}
func (b *Block) MixHash(ctx context.Context) (common.Hash, error) {
header, err := b.resolveHeader(ctx)
if err != nil {
return common.Hash{}, err
}
return header.MixDigest, nil
}
func (b *Block) TransactionsRoot(ctx context.Context) (common.Hash, error) {
header, err := b.resolveHeader(ctx)
if err != nil {
return common.Hash{}, err
}
return header.TxHash, nil
}
func (b *Block) StateRoot(ctx context.Context) (common.Hash, error) {
header, err := b.resolveHeader(ctx)
if err != nil {
return common.Hash{}, err
}
return header.Root, nil
}
func (b *Block) ReceiptsRoot(ctx context.Context) (common.Hash, error) {
header, err := b.resolveHeader(ctx)
if err != nil {
return common.Hash{}, err
}
return header.ReceiptHash, nil
}
func (b *Block) OmmerHash(ctx context.Context) (common.Hash, error) {
header, err := b.resolveHeader(ctx)
if err != nil {
return common.Hash{}, err
}
return header.UncleHash, nil
}
func (b *Block) OmmerCount(ctx context.Context) (*int32, error) {
block, err := b.resolve(ctx)
if err != nil || block == nil {
return nil, err
}
count := int32(len(block.Uncles()))
return &count, err
}
func (b *Block) Ommers(ctx context.Context) (*[]*Block, error) {
block, err := b.resolve(ctx)
if err != nil || block == nil {
return nil, err
}
ret := make([]*Block, 0, len(block.Uncles()))
for _, uncle := range block.Uncles() {
blockNumberOrHash := rpc.BlockNumberOrHashWithHash(uncle.Hash(), false)
ret = append(ret, &Block{
backend: b.backend,
numberOrHash: &blockNumberOrHash,
header: uncle,
})
}
return &ret, nil
}
func (b *Block) ExtraData(ctx context.Context) (hexutil.Bytes, error) {
header, err := b.resolveHeader(ctx)
if err != nil {
return hexutil.Bytes{}, err
}
return hexutil.Bytes(header.Extra), nil
}
func (b *Block) LogsBloom(ctx context.Context) (hexutil.Bytes, error) {
header, err := b.resolveHeader(ctx)
if err != nil {
return hexutil.Bytes{}, err
}
return hexutil.Bytes(header.Bloom.Bytes()), nil
}
func (b *Block) TotalDifficulty(ctx context.Context) (hexutil.Big, error) {
h := b.hash
if h == (common.Hash{}) {
header, err := b.resolveHeader(ctx)
if err != nil {
return hexutil.Big{}, err
}
h = header.Hash()
}
td, err := b.backend.GetTd(h)
if err != nil {
return hexutil.Big{}, err
}
return hexutil.Big(*td), nil
}
// BlockNumberArgs encapsulates arguments to accessors that specify a block number.
type BlockNumberArgs struct {
// TODO: Ideally we could use input unions to allow the query to specify the
// block parameter by hash, block number, or tag but input unions aren't part of the
// standard GraphQL schema SDL yet, see: https://github.com/graphql/graphql-spec/issues/488
Block *hexutil.Uint64
}
// NumberOr returns the provided block number argument, or the "current" block number or hash if none
// was provided.
func (a BlockNumberArgs) NumberOr(current rpc.BlockNumberOrHash) rpc.BlockNumberOrHash {
if a.Block != nil {
blockNr := rpc.BlockNumber(*a.Block)
return rpc.BlockNumberOrHashWithNumber(blockNr)
}
return current
}
// NumberOrLatest returns the provided block number argument, or the "latest" block number if none
// was provided.
func (a BlockNumberArgs) NumberOrLatest() rpc.BlockNumberOrHash {
return a.NumberOr(rpc.BlockNumberOrHashWithNumber(rpc.LatestBlockNumber))
}
func (b *Block) Miner(ctx context.Context, args BlockNumberArgs) (*Account, error) {
header, err := b.resolveHeader(ctx)
if err != nil {
return nil, err
}
return &Account{
backend: b.backend,
address: header.Coinbase,
blockNrOrHash: args.NumberOrLatest(),
}, nil
}
func (b *Block) TransactionCount(ctx context.Context) (*int32, error) {
block, err := b.resolve(ctx)
if err != nil || block == nil {
return nil, err
}
count := int32(len(block.Transactions()))
return &count, err
}
func (b *Block) Transactions(ctx context.Context) (*[]*Transaction, error) {
block, err := b.resolve(ctx)
if err != nil || block == nil {
return nil, err
}
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),
})
}
return &ret, nil
}
func (b *Block) TransactionAt(ctx context.Context, args struct{ Index int32 }) (*Transaction, error) {
block, err := b.resolve(ctx)
if err != nil || block == nil {
return nil, err
}
txs := block.Transactions()
if args.Index < 0 || int(args.Index) >= len(txs) {
return nil, nil
}
tx := txs[args.Index]
return &Transaction{
backend: b.backend,
hash: tx.Hash(),
tx: tx,
block: b,
index: uint64(args.Index),
}, nil
}
func (b *Block) OmmerAt(ctx context.Context, args struct{ Index int32 }) (*Block, error) {
block, err := b.resolve(ctx)
if err != nil || block == nil {
return nil, err
}
uncles := block.Uncles()
if args.Index < 0 || int(args.Index) >= len(uncles) {
return nil, nil
}
uncle := uncles[args.Index]
blockNumberOrHash := rpc.BlockNumberOrHashWithHash(uncle.Hash(), false)
return &Block{
backend: b.backend,
numberOrHash: &blockNumberOrHash,
header: uncle,
}, nil
}
// BlockFilterCriteria encapsulates criteria passed to a `logs` accessor inside
// a block.
type BlockFilterCriteria struct {
Addresses *[]common.Address // restricts matches to events created by specific contracts
// The Topic list restricts matches to particular event topics. Each event has a list
// of topics. Topics matches a prefix of that list. An empty element slice matches any
// topic. Non-empty elements represent an alternative that matches any of the
// contained topics.
//
// Examples:
// {} or nil matches any topic list
// {{A}} matches topic A in first position
// {{}, {B}} matches any topic in first position, B in second position
// {{A}, {B}} matches topic A in first position, B in second position
// {{A, B}}, {C, D}} matches topic (A OR B) in first position, (C OR D) in second position
Topics *[][]common.Hash
}
// runFilter accepts a filter and executes it, returning all its results as
// `Log` objects.
func runFilter(ctx context.Context, be *eth.Backend, filter *filters.Filter) ([]*Log, error) {
logs, err := filter.Logs(ctx)
if err != nil || logs == nil {
return nil, err
}
ret := make([]*Log, 0, len(logs))
for _, log := range logs {
ret = append(ret, &Log{
backend: be,
transaction: &Transaction{backend: be, hash: log.TxHash},
log: log,
})
}
return ret, nil
}
func (b *Block) Logs(ctx context.Context, args struct{ Filter BlockFilterCriteria }) ([]*Log, error) {
var addresses []common.Address
if args.Filter.Addresses != nil {
addresses = *args.Filter.Addresses
}
var topics [][]common.Hash
if args.Filter.Topics != nil {
topics = *args.Filter.Topics
}
hash := b.hash
if hash == (common.Hash{}) {
header, err := b.resolveHeader(ctx)
if err != nil {
return nil, err
}
hash = header.Hash()
}
// Construct the range filter
filter := filters.NewBlockFilter(b.backend, hash, addresses, topics)
// Run the filter and return all the logs
return runFilter(ctx, b.backend, filter)
}
func (b *Block) Account(ctx context.Context, args struct {
Address common.Address
}) (*Account, error) {
if b.numberOrHash == nil {
_, err := b.resolveHeader(ctx)
if err != nil {
return nil, err
}
}
return &Account{
backend: b.backend,
address: args.Address,
blockNrOrHash: *b.numberOrHash,
}, nil
}
// CallData encapsulates arguments to `call` or `estimateGas`.
// All arguments are optional.
type CallData struct {
From *common.Address // The Ethereum address the call is from.
To *common.Address // The Ethereum address the call is to.
Gas *hexutil.Uint64 // The amount of gas provided for the call.
GasPrice *hexutil.Big // The price of each unit of gas, in wei.
Value *hexutil.Big // The value sent along with the call.
Data *hexutil.Bytes // Any data sent with the call.
}
// CallResult encapsulates the result of an invocation of the `call` accessor.
type CallResult struct {
data hexutil.Bytes // The return data from the call
gasUsed hexutil.Uint64 // The amount of gas used
status hexutil.Uint64 // The return status of the call - 0 for failure or 1 for success.
}
func (c *CallResult) Data() hexutil.Bytes {
return c.data
}
func (c *CallResult) GasUsed() hexutil.Uint64 {
return c.gasUsed
}
func (c *CallResult) Status() hexutil.Uint64 {
return c.status
}
func (b *Block) Call(ctx context.Context, args struct {
Data eth.CallArgs
}) (*CallResult, error) {
if b.numberOrHash == nil {
_, err := b.resolve(ctx)
if err != nil {
return nil, err
}
}
result, gas, failed, err := eth.DoCall(ctx, b.backend, args.Data, *b.numberOrHash, nil, 5*time.Second, b.backend.RPCGasCap())
status := hexutil.Uint64(1)
if failed {
status = 0
}
return &CallResult{
data: hexutil.Bytes(result),
gasUsed: hexutil.Uint64(gas),
status: status,
}, err
}
// Resolver is the top-level object in the GraphQL hierarchy.
type Resolver struct {
backend *eth.Backend
}
func (r *Resolver) Block(ctx context.Context, args struct {
Number *hexutil.Uint64
Hash *common.Hash
}) (*Block, error) {
var block *Block
if args.Number != nil {
number := rpc.BlockNumber(uint64(*args.Number))
numberOrHash := rpc.BlockNumberOrHashWithNumber(number)
block = &Block{
backend: r.backend,
numberOrHash: &numberOrHash,
}
} else if args.Hash != nil {
numberOrHash := rpc.BlockNumberOrHashWithHash(*args.Hash, false)
block = &Block{
backend: r.backend,
numberOrHash: &numberOrHash,
}
} else {
numberOrHash := rpc.BlockNumberOrHashWithNumber(rpc.LatestBlockNumber)
block = &Block{
backend: r.backend,
numberOrHash: &numberOrHash,
}
}
// Resolve the header, return nil if it doesn't exist.
// Note we don't resolve block directly here since it will require an
// additional network request for light client.
h, err := block.resolveHeader(ctx)
if err != nil {
return nil, err
} else if h == nil {
return nil, nil
}
return block, nil
}
func (r *Resolver) Blocks(ctx context.Context, args struct {
From hexutil.Uint64
To *hexutil.Uint64
}) ([]*Block, error) {
from := rpc.BlockNumber(args.From)
var to rpc.BlockNumber
if args.To != nil {
to = rpc.BlockNumber(*args.To)
} else {
to = rpc.BlockNumber(r.backend.CurrentBlock().Number().Int64())
}
if to < from {
return []*Block{}, nil
}
ret := make([]*Block, 0, to-from+1)
for i := from; i <= to; i++ {
numberOrHash := rpc.BlockNumberOrHashWithNumber(i)
ret = append(ret, &Block{
backend: r.backend,
numberOrHash: &numberOrHash,
})
}
return ret, nil
}
func (r *Resolver) Transaction(ctx context.Context, args struct{ Hash common.Hash }) (*Transaction, error) {
tx := &Transaction{
backend: r.backend,
hash: args.Hash,
}
// Resolve the transaction; if it doesn't exist, return nil.
t, err := tx.resolve(ctx)
if err != nil {
return nil, err
} else if t == nil {
return nil, nil
}
return tx, nil
}
// FilterCriteria encapsulates the arguments to `logs` on the root resolver object.
type FilterCriteria struct {
FromBlock *hexutil.Uint64 // beginning of the queried range, nil means genesis block
ToBlock *hexutil.Uint64 // end of the range, nil means latest block
Addresses *[]common.Address // restricts matches to events created by specific contracts
// The Topic list restricts matches to particular event topics. Each event has a list
// of topics. Topics matches a prefix of that list. An empty element slice matches any
// topic. Non-empty elements represent an alternative that matches any of the
// contained topics.
//
// Examples:
// {} or nil matches any topic list
// {{A}} matches topic A in first position
// {{}, {B}} matches any topic in first position, B in second position
// {{A}, {B}} matches topic A in first position, B in second position
// {{A, B}}, {C, D}} matches topic (A OR B) in first position, (C OR D) in second position
Topics *[][]common.Hash
}
func (r *Resolver) Logs(ctx context.Context, args struct{ Filter FilterCriteria }) ([]*Log, error) {
// Convert the RPC block numbers into internal representations
begin := rpc.LatestBlockNumber.Int64()
if args.Filter.FromBlock != nil {
begin = int64(*args.Filter.FromBlock)
}
end := rpc.LatestBlockNumber.Int64()
if args.Filter.ToBlock != nil {
end = int64(*args.Filter.ToBlock)
}
var addresses []common.Address
if args.Filter.Addresses != nil {
addresses = *args.Filter.Addresses
}
var topics [][]common.Hash
if args.Filter.Topics != nil {
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)
}

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// VulcanizeDB
// Copyright © 2020 Vulcanize
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package graphql_test
import (
"io/ioutil"
"testing"
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
"github.com/sirupsen/logrus"
)
func TestGraphQL(t *testing.T) {
RegisterFailHandler(Fail)
RunSpecs(t, "graphql test suite")
}
var _ = BeforeSuite(func() {
logrus.SetOutput(ioutil.Discard)
})

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// VulcanizeDB
// Copyright © 2020 Vulcanize
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package graphql_test
import (
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
"github.com/vulcanize/ipld-eth-server/pkg/graphql"
)
var _ = Describe("GraphQL", func() {
It("Builds the schema and creates a new handler", func() {
_, err := graphql.NewHandler(nil)
Expect(err).ToNot(HaveOccurred())
})
})

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// VulcanizeDB
// Copyright © 2020 Vulcanize
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package graphql
const schema string = `
# Bytes32 is a 32 byte binary string, represented as 0x-prefixed hexadecimal.
scalar Bytes32
# Address is a 20 byte Ethereum address, represented as 0x-prefixed hexadecimal.
scalar Address
# Bytes is an arbitrary length binary string, represented as 0x-prefixed hexadecimal.
# An empty byte string is represented as '0x'. Byte strings must have an even number of hexadecimal nybbles.
scalar Bytes
# BigInt is a large integer. Input is accepted as either a JSON number or as a string.
# Strings may be either decimal or 0x-prefixed hexadecimal. Output values are all
# 0x-prefixed hexadecimal.
scalar BigInt
# Long is a 64 bit unsigned integer.
scalar Long
schema {
query: Query
}
# Account is an Ethereum account at a particular block.
type Account {
# Address is the address owning the account.
address: Address!
# Balance is the balance of the account, in wei.
balance: BigInt!
# TransactionCount is the number of transactions sent from this account,
# or in the case of a contract, the number of contracts created. Otherwise
# known as the nonce.
transactionCount: Long!
# Code contains the smart contract code for this account, if the account
# is a (non-self-destructed) contract.
code: Bytes!
# Storage provides access to the storage of a contract account, indexed
# by its 32 byte slot identifier.
storage(slot: Bytes32!): Bytes32!
}
# Log is an Ethereum event log.
type Log {
# Index is the index of this log in the block.
index: Int!
# Account is the account which generated this log - this will always
# be a contract account.
account(block: Long): Account!
# Topics is a list of 0-4 indexed topics for the log.
topics: [Bytes32!]!
# Data is unindexed data for this log.
data: Bytes!
# Transaction is the transaction that generated this log entry.
transaction: Transaction!
}
# Transaction is an Ethereum transaction.
type Transaction {
# Hash is the hash of this transaction.
hash: Bytes32!
# Nonce is the nonce of the account this transaction was generated with.
nonce: Long!
# Index is the index of this transaction in the parent block. This will
# be null if the transaction has not yet been mined.
index: Int
# From is the account that sent this transaction - this will always be
# an externally owned account.
from(block: Long): Account!
# To is the account the transaction was sent to. This is null for
# contract-creating transactions.
to(block: Long): Account
# Value is the value, in wei, sent along with this transaction.
value: BigInt!
# GasPrice is the price offered to miners for gas, in wei per unit.
gasPrice: BigInt!
# Gas is the maximum amount of gas this transaction can consume.
gas: Long!
# InputData is the data supplied to the target of the transaction.
inputData: Bytes!
# Block is the block this transaction was mined in. This will be null if
# the transaction has not yet been mined.
block: Block
# Status is the return status of the transaction. This will be 1 if the
# transaction succeeded, or 0 if it failed (due to a revert, or due to
# running out of gas). If the transaction has not yet been mined, this
# field will be null.
status: Long
# GasUsed is the amount of gas that was used processing this transaction.
# If the transaction has not yet been mined, this field will be null.
gasUsed: Long
# CumulativeGasUsed is the total gas used in the block up to and including
# this transaction. If the transaction has not yet been mined, this field
# will be null.
cumulativeGasUsed: Long
# CreatedContract is the account that was created by a contract creation
# transaction. If the transaction was not a contract creation transaction,
# or it has not yet been mined, this field will be null.
createdContract(block: Long): Account
# Logs is a list of log entries emitted by this transaction. If the
# transaction has not yet been mined, this field will be null.
logs: [Log!]
r: BigInt!
s: BigInt!
v: BigInt!
}
# BlockFilterCriteria encapsulates log filter criteria for a filter applied
# to a single block.
input BlockFilterCriteria {
# Addresses is list of addresses that are of interest. If this list is
# empty, results will not be filtered by address.
addresses: [Address!]
# Topics list restricts matches to particular event topics. Each event has a list
# of topics. Topics matches a prefix of that list. An empty element array matches any
# topic. Non-empty elements represent an alternative that matches any of the
# contained topics.
#
# Examples:
# - [] or nil matches any topic list
# - [[A]] matches topic A in first position
# - [[], [B]] matches any topic in first position, B in second position
# - [[A], [B]] matches topic A in first position, B in second position
# - [[A, B]], [C, D]] matches topic (A OR B) in first position, (C OR D) in second position
topics: [[Bytes32!]!]
}
# Block is an Ethereum block.
type Block {
# Number is the number of this block, starting at 0 for the genesis block.
number: Long!
# Hash is the block hash of this block.
hash: Bytes32!
# Parent is the parent block of this block.
parent: Block
# Nonce is the block nonce, an 8 byte sequence determined by the miner.
nonce: Bytes!
# TransactionsRoot is the keccak256 hash of the root of the trie of transactions in this block.
transactionsRoot: Bytes32!
# TransactionCount is the number of transactions in this block. if
# transactions are not available for this block, this field will be null.
transactionCount: Int
# StateRoot is the keccak256 hash of the state trie after this block was processed.
stateRoot: Bytes32!
# ReceiptsRoot is the keccak256 hash of the trie of transaction receipts in this block.
receiptsRoot: Bytes32!
# Miner is the account that mined this block.
miner(block: Long): Account!
# ExtraData is an arbitrary data field supplied by the miner.
extraData: Bytes!
# GasLimit is the maximum amount of gas that was available to transactions in this block.
gasLimit: Long!
# GasUsed is the amount of gas that was used executing transactions in this block.
gasUsed: Long!
# Timestamp is the unix timestamp at which this block was mined.
timestamp: Long!
# LogsBloom is a bloom filter that can be used to check if a block may
# contain log entries matching a filter.
logsBloom: Bytes!
# MixHash is the hash that was used as an input to the PoW process.
mixHash: Bytes32!
# Difficulty is a measure of the difficulty of mining this block.
difficulty: BigInt!
# TotalDifficulty is the sum of all difficulty values up to and including
# this block.
totalDifficulty: BigInt!
# OmmerCount is the number of ommers (AKA uncles) associated with this
# block. If ommers are unavailable, this field will be null.
ommerCount: Int
# Ommers is a list of ommer (AKA uncle) blocks associated with this block.
# If ommers are unavailable, this field will be null. Depending on your
# node, the transactions, transactionAt, transactionCount, ommers,
# ommerCount and ommerAt fields may not be available on any ommer blocks.
ommers: [Block]
# OmmerAt returns the ommer (AKA uncle) at the specified index. If ommers
# are unavailable, or the index is out of bounds, this field will be null.
ommerAt(index: Int!): Block
# OmmerHash is the keccak256 hash of all the ommers (AKA uncles)
# associated with this block.
ommerHash: Bytes32!
# Transactions is a list of transactions associated with this block. If
# transactions are unavailable for this block, this field will be null.
transactions: [Transaction!]
# TransactionAt returns the transaction at the specified index. If
# transactions are unavailable for this block, or if the index is out of
# bounds, this field will be null.
transactionAt(index: Int!): Transaction
# Logs returns a filtered set of logs from this block.
logs(filter: BlockFilterCriteria!): [Log!]!
# Account fetches an Ethereum account at the current block's state.
account(address: Address!): Account!
# Call executes a local call operation at the current block's state.
call(data: CallData!): CallResult
}
# CallData represents the data associated with a local contract call.
# All fields are optional.
input CallData {
# From is the address making the call.
from: Address
# To is the address the call is sent to.
to: Address
# Gas is the amount of gas sent with the call.
gas: Long
# GasPrice is the price, in wei, offered for each unit of gas.
gasPrice: BigInt
# Value is the value, in wei, sent along with the call.
value: BigInt
# Data is the data sent to the callee.
data: Bytes
}
# CallResult is the result of a local call operation.
type CallResult {
# Data is the return data of the called contract.
data: Bytes!
# GasUsed is the amount of gas used by the call, after any refunds.
gasUsed: Long!
# Status is the result of the call - 1 for success or 0 for failure.
status: Long!
}
# FilterCriteria encapsulates log filter criteria for searching log entries.
input FilterCriteria {
# FromBlock is the block at which to start searching, inclusive. Defaults
# to the latest block if not supplied.
fromBlock: Long
# ToBlock is the block at which to stop searching, inclusive. Defaults
# to the latest block if not supplied.
toBlock: Long
# Addresses is a list of addresses that are of interest. If this list is
# empty, results will not be filtered by address.
addresses: [Address!]
# Topics list restricts matches to particular event topics. Each event has a list
# of topics. Topics matches a prefix of that list. An empty element array matches any
# topic. Non-empty elements represent an alternative that matches any of the
# contained topics.
#
# Examples:
# - [] or nil matches any topic list
# - [[A]] matches topic A in first position
# - [[], [B]] matches any topic in first position, B in second position
# - [[A], [B]] matches topic A in first position, B in second position
# - [[A, B]], [C, D]] matches topic (A OR B) in first position, (C OR D) in second position
topics: [[Bytes32!]!]
}
type Query {
# Block fetches an Ethereum block by number or by hash. If neither is
# supplied, the most recent known block is returned.
block(number: Long, hash: Bytes32): Block
# Blocks returns all the blocks between two numbers, inclusive. If
# to is not supplied, it defaults to the most recent known block.
blocks(from: Long!, to: Long): [Block!]!
# Transaction returns a transaction specified by its hash.
transaction(hash: Bytes32!): Transaction
# Logs returns log entries matching the provided filter.
logs(filter: FilterCriteria!): [Log!]!
}
`

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// VulcanizeDB
// Copyright © 2020 Vulcanize
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package graphql
import (
"fmt"
"net"
"net/http"
"github.com/ethereum/go-ethereum/p2p"
"github.com/ethereum/go-ethereum/rpc"
"github.com/graph-gophers/graphql-go"
"github.com/graph-gophers/graphql-go/relay"
"github.com/sirupsen/logrus"
"github.com/vulcanize/ipld-eth-server/pkg/eth"
)
// Service encapsulates a GraphQL service.
type Service struct {
endpoint string // The host:port endpoint for this service.
cors []string // Allowed CORS domains
vhosts []string // Recognised vhosts
timeouts rpc.HTTPTimeouts // Timeout settings for HTTP requests.
backend *eth.Backend // The backend that queries will operate onn.
handler http.Handler // The `http.Handler` used to answer queries.
listener net.Listener // The listening socket.
}
// New constructs a new GraphQL service instance.
func New(backend *eth.Backend, endpoint string, cors, vhosts []string, timeouts rpc.HTTPTimeouts) (*Service, error) {
return &Service{
endpoint: endpoint,
cors: cors,
vhosts: vhosts,
timeouts: timeouts,
backend: backend,
}, nil
}
// Protocols returns the list of protocols exported by this service.
func (s *Service) Protocols() []p2p.Protocol { return nil }
// APIs returns the list of APIs exported by this service.
func (s *Service) APIs() []rpc.API { return nil }
// Start is called after all services have been constructed and the networking
// layer was also initialized to spawn any goroutines required by the service.
func (s *Service) Start(server *p2p.Server) error {
var err error
s.handler, err = NewHandler(s.backend)
if err != nil {
return err
}
if s.listener, err = net.Listen("tcp", s.endpoint); err != nil {
return err
}
go rpc.NewHTTPServer(s.cors, s.vhosts, s.timeouts, s.handler).Serve(s.listener)
logrus.Debugf("graphQL endpoint opened for url %s", fmt.Sprintf("http://%s", s.endpoint))
return nil
}
// newHandler returns a new `http.Handler` that will answer GraphQL queries.
// It additionally exports an interactive query browser on the / endpoint.
func NewHandler(backend *eth.Backend) (http.Handler, error) {
q := Resolver{backend}
s, err := graphql.ParseSchema(schema, &q)
if err != nil {
return nil, err
}
h := &relay.Handler{Schema: s}
mux := http.NewServeMux()
mux.Handle("/", GraphiQL{})
mux.Handle("/graphql", h)
mux.Handle("/graphql/", h)
return mux, nil
}
// Stop terminates all goroutines belonging to the service, blocking until they
// are all terminated.
func (s *Service) Stop() error {
if s.listener != nil {
s.listener.Close()
s.listener = nil
logrus.Debugf("graphQL endpoint closed for url %s", fmt.Sprintf("http://%s", s.endpoint))
}
return nil
}

41
pkg/serve/service.go
View File

@ -52,6 +52,8 @@ type Server interface {
Subscribe(id rpc.ID, sub chan<- SubscriptionPayload, quitChan chan<- bool, params eth.SubscriptionSettings)
// Method to unsubscribe from the service
Unsubscribe(id rpc.ID)
// Backend exposes the server's backend
Backend() *eth.Backend
}
// Service is the underlying struct for the watcher
@ -74,29 +76,30 @@ type Service struct {
db *postgres.DB
// wg for syncing serve processes
serveWg *sync.WaitGroup
// config for backend
config *eth.Config
// rpc client for forwarding cache misses
client *rpc.Client
// backend for the server
backend *eth.Backend
}
// NewServer creates a new Server using an underlying Service struct
func NewServer(settings *Config) (Server, error) {
sn := new(Service)
sn.Retriever = eth.NewCIDRetriever(settings.DB)
sn.IPLDFetcher = eth.NewIPLDFetcher(settings.DB)
sn.Filterer = eth.NewResponseFilterer()
sn.db = settings.DB
sn.QuitChan = make(chan bool)
sn.Subscriptions = make(map[common.Hash]map[rpc.ID]Subscription)
sn.SubscriptionTypes = make(map[common.Hash]eth.SubscriptionSettings)
sn.config = &eth.Config{
sap := new(Service)
sap.Retriever = eth.NewCIDRetriever(settings.DB)
sap.IPLDFetcher = eth.NewIPLDFetcher(settings.DB)
sap.Filterer = eth.NewResponseFilterer()
sap.db = settings.DB
sap.QuitChan = make(chan bool)
sap.Subscriptions = make(map[common.Hash]map[rpc.ID]Subscription)
sap.SubscriptionTypes = make(map[common.Hash]eth.SubscriptionSettings)
var err error
sap.backend, err = eth.NewEthBackend(sap.db, &eth.Config{
ChainConfig: settings.ChainConfig,
VmConfig: vm.Config{},
DefaultSender: settings.DefaultSender,
RPCGasCap: settings.RPCGasCap,
}
return sn, nil
})
return sap, err
}
// Protocols exports the services p2p protocols, this service has none
@ -133,15 +136,10 @@ func (sap *Service) APIs() []rpc.API {
Public: true,
},
}
backend, err := eth.NewEthBackend(sap.db, sap.config)
if err != nil {
log.Error(err)
return nil
}
return append(apis, rpc.API{
Namespace: eth.APIName,
Version: eth.APIVersion,
Service: eth.NewPublicEthAPI(backend, sap.client),
Service: eth.NewPublicEthAPI(sap.backend, sap.client),
Public: true,
})
}
@ -358,6 +356,11 @@ func (sap *Service) Stop() error {
return nil
}
// Backend exposes the server's backend
func (sap *Service) Backend() *eth.Backend {
return sap.backend
}
// close is used to close all listening subscriptions
// close needs to be called with subscription access locked
func (sap *Service) close() {