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Implement trace-related endpoints using local state index
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,172 @@ | ||
| package evm | ||
|
|
||
| import ( | ||
| "fmt" | ||
|
|
||
| "github.com/onflow/atree" | ||
| "github.com/onflow/flow-go/fvm/evm" | ||
| "github.com/onflow/flow-go/fvm/evm/emulator" | ||
| "github.com/onflow/flow-go/fvm/evm/emulator/state" | ||
| "github.com/onflow/flow-go/fvm/evm/precompiles" | ||
| "github.com/onflow/flow-go/fvm/evm/types" | ||
| flowGo "github.com/onflow/flow-go/model/flow" | ||
| "github.com/onflow/go-ethereum/common" | ||
| gethTypes "github.com/onflow/go-ethereum/core/types" | ||
| "github.com/onflow/go-ethereum/eth/tracers" | ||
| "github.com/rs/zerolog" | ||
|
|
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| "github.com/onflow/flow-evm-gateway/models" | ||
| "github.com/onflow/flow-evm-gateway/storage" | ||
| ) | ||
|
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| type BlockExecutor struct { | ||
| types.StateDB // todo change to types.ReadOnlyView | ||
| emulator types.Emulator | ||
| chainID flowGo.ChainID | ||
| block *models.Block | ||
| blocks storage.BlockIndexer | ||
| logger zerolog.Logger | ||
| receipts storage.ReceiptIndexer | ||
|
|
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| // block dynamic data | ||
| txIndex uint | ||
| gasUsed uint64 | ||
| } | ||
|
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| func NewBlockExecutor( | ||
| block *models.Block, | ||
| ledger atree.Ledger, | ||
| chainID flowGo.ChainID, | ||
| blocks storage.BlockIndexer, | ||
| receipts storage.ReceiptIndexer, | ||
| logger zerolog.Logger, | ||
| ) (*BlockExecutor, error) { | ||
| logger = logger.With().Str("component", "state-execution").Logger() | ||
| storageAddress := evm.StorageAccountAddress(chainID) | ||
|
|
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| stateDB, err := state.NewStateDB(ledger, storageAddress) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| return &BlockExecutor{ | ||
| emulator: emulator.NewEmulator(ledger, storageAddress), | ||
| StateDB: stateDB, | ||
| chainID: chainID, | ||
| block: block, | ||
| blocks: blocks, | ||
| receipts: receipts, | ||
| logger: logger, | ||
| }, nil | ||
| } | ||
|
|
||
| func (s *BlockExecutor) Run( | ||
| tx models.Transaction, | ||
| tracer *tracers.Tracer, | ||
| ) (*gethTypes.Receipt, error) { | ||
| l := s.logger.With().Str("tx-hash", tx.Hash().String()).Logger() | ||
| l.Info().Msg("executing new transaction") | ||
|
|
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| receipt, err := s.receipts.GetByTransactionID(tx.Hash()) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
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| ctx, err := s.blockContext(receipt) | ||
| ctx.Tracer = tracer | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| bv, err := s.emulator.NewBlockView(ctx) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| var res *types.Result | ||
|
|
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| switch t := tx.(type) { | ||
| case models.DirectCall: | ||
| res, err = bv.DirectCall(t.DirectCall) | ||
| case models.TransactionCall: | ||
| res, err = bv.RunTransaction(t.Transaction) | ||
| default: | ||
| return nil, fmt.Errorf("invalid transaction type") | ||
| } | ||
|
|
||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
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| // we should never produce invalid transaction, since if the transaction was emitted from the evm core | ||
| // it must have either been successful or failed, invalid transactions are not emitted | ||
| if res.Invalid() { | ||
| return nil, fmt.Errorf("invalid transaction %s: %w", tx.Hash(), res.ValidationError) | ||
| } | ||
|
|
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| // increment values as part of a virtual block | ||
| s.gasUsed += res.GasConsumed | ||
| s.txIndex++ | ||
|
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| l.Debug().Msg("transaction executed successfully") | ||
|
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| return res.LightReceipt().ToReceipt(), nil | ||
| } | ||
|
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| // blockContext produces a context that is used by the block view during the execution. | ||
| // It can be used for transaction execution and calls. Receipt is not required when | ||
| // producing the context for calls. | ||
| func (s *BlockExecutor) blockContext(receipt *models.Receipt) (types.BlockContext, error) { | ||
| ctx := types.BlockContext{ | ||
| ChainID: types.EVMChainIDFromFlowChainID(s.chainID), | ||
| BlockNumber: s.block.Height, | ||
| BlockTimestamp: s.block.Timestamp, | ||
| DirectCallBaseGasUsage: types.DefaultDirectCallBaseGasUsage, | ||
| DirectCallGasPrice: types.DefaultDirectCallGasPrice, | ||
| GasFeeCollector: types.CoinbaseAddress, | ||
| GetHashFunc: func(n uint64) common.Hash { | ||
| // For block heights greater than or equal to the current, | ||
| // return an empty block hash. | ||
| if n >= s.block.Height { | ||
| return common.Hash{} | ||
| } | ||
| // If the given block height, is more than 256 blocks | ||
| // in the past, return an empty block hash. | ||
| if s.block.Height-n > 256 { | ||
| return common.Hash{} | ||
| } | ||
|
|
||
| block, err := s.blocks.GetByHeight(n) | ||
| if err != nil { | ||
| return common.Hash{} | ||
| } | ||
| blockHash, err := block.Hash() | ||
| if err != nil { | ||
| return common.Hash{} | ||
| } | ||
|
|
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| return blockHash | ||
| }, | ||
| Random: s.block.PrevRandao, | ||
| TxCountSoFar: s.txIndex, | ||
| TotalGasUsedSoFar: s.gasUsed, | ||
| Tracer: nil, | ||
| } | ||
|
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| // only add precompile cadence arch mocks if we have a receipt, | ||
| // in case of call and dry run we don't produce receipts | ||
| // todo when a call is made that uses cadence arch precompiles, it will fail, because | ||
| // the precompiled contracts won't be set since we don't have a receipt for them | ||
| // this failure should be detected and we should in such a case execute a call against the | ||
| // EN using an AN | ||
| if receipt != nil { | ||
| calls, err := types.AggregatedPrecompileCallsFromEncoded(receipt.PrecompiledCalls) | ||
| if err != nil { | ||
| return types.BlockContext{}, err | ||
| } | ||
|
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| ctx.ExtraPrecompiledContracts = precompiles.AggregatedPrecompiledCallsToPrecompiledContracts(calls) | ||
| } | ||
|
|
||
| return ctx, nil | ||
| } |
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