9bbb9df185
Just some minor optimizations I figured out a while ago. By using ReadBytes instead of Bytes on the rlp stream, we can save the allocation of a temporary buffer for the typed tx payload. If kind == rlp.Byte, the size reported by Stream.Kind will be zero, but we need a buffer of size 1 for ReadBytes. Since typed txs always have to be longer than 1 byte, we can just return an error for kind == rlp.Byte. There is a also a small change for Log: since the first three fields of Log are the ones that should appear in the canon encoding, we can simply ignore the remaining fields via struct tag. Doing this removes an indirection through the rlpLog type. --------- Co-authored-by: Martin Holst Swende <martin@swende.se>
62 lines
2.4 KiB
Go
62 lines
2.4 KiB
Go
// Copyright 2014 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package types
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import (
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/common/hexutil"
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)
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//go:generate go run ../../rlp/rlpgen -type Log -out gen_log_rlp.go
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//go:generate go run github.com/fjl/gencodec -type Log -field-override logMarshaling -out gen_log_json.go
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// Log represents a contract log event. These events are generated by the LOG opcode and
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// stored/indexed by the node.
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type Log struct {
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// Consensus fields:
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// address of the contract that generated the event
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Address common.Address `json:"address" gencodec:"required"`
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// list of topics provided by the contract.
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Topics []common.Hash `json:"topics" gencodec:"required"`
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// supplied by the contract, usually ABI-encoded
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Data []byte `json:"data" gencodec:"required"`
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// Derived fields. These fields are filled in by the node
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// but not secured by consensus.
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// block in which the transaction was included
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BlockNumber uint64 `json:"blockNumber" rlp:"-"`
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// hash of the transaction
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TxHash common.Hash `json:"transactionHash" gencodec:"required" rlp:"-"`
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// index of the transaction in the block
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TxIndex uint `json:"transactionIndex" rlp:"-"`
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// hash of the block in which the transaction was included
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BlockHash common.Hash `json:"blockHash" rlp:"-"`
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// index of the log in the block
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Index uint `json:"logIndex" rlp:"-"`
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// The Removed field is true if this log was reverted due to a chain reorganisation.
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// You must pay attention to this field if you receive logs through a filter query.
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Removed bool `json:"removed" rlp:"-"`
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}
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type logMarshaling struct {
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Data hexutil.Bytes
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BlockNumber hexutil.Uint64
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TxIndex hexutil.Uint
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Index hexutil.Uint
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}
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