Roy Crihfield
b8fec4b571
Adds a method to perform full-state snapshots by diffing against an empty state trie. This replicates the functionality of `ipld-eth-state-snapshot`, so that code can use this as a library; see: cerc-io/ipld-eth-state-snapshot#1 Note that due to how incremental diffs are processed (updates are processed after the trie has been traversed) the iterator state doesn't fully capture the progress of the diff, so it's not currently feasible to state diffs this way. Full snapshots don't have to worry about updated accounts, so we can support them. Co-authored-by: Thomas E Lackey <telackey@bozemanpass.com> Reviewed-on: #15
90 lines
2.7 KiB
Go
90 lines
2.7 KiB
Go
// Copyright 2019 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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"math/big"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/core/types"
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)
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// StateRoots holds the state roots required for generating a state diff
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type StateRoots struct {
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OldStateRoot, NewStateRoot common.Hash
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}
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// StateObject is the final output structure from the builder
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type StateObject struct {
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BlockNumber *big.Int `json:"blockNumber" gencodec:"required"`
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BlockHash common.Hash `json:"blockHash" gencodec:"required"`
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Nodes []StateLeafNode `json:"nodes" gencodec:"required"`
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IPLDs []IPLD `json:"iplds"`
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}
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// AccountMap is a mapping of hex encoded path => account wrapper
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type AccountMap map[string]AccountWrapper
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// AccountWrapper is used to temporarily associate the unpacked node with its raw values
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type AccountWrapper struct {
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Account *types.StateAccount
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LeafKey []byte
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CID string
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}
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// StateLeafNode holds the data for a single state diff leaf node
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type StateLeafNode struct {
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Removed bool
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AccountWrapper AccountWrapper
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StorageDiff []StorageLeafNode
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}
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// StorageLeafNode holds the data for a single storage diff leaf node
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type StorageLeafNode struct {
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Removed bool
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Value []byte
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LeafKey []byte
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CID string
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}
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// IPLD holds a cid:content pair, e.g. for codehash to code mappings or for intermediate node IPLD objects
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type IPLD struct {
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CID string
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Content []byte
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}
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type StateNodeSink func(node StateLeafNode) error
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type StorageNodeSink func(node StorageLeafNode) error
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type IPLDSink func(IPLD) error
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// OperationType for type of WatchAddress operation
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type OperationType string
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const (
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Add OperationType = "add"
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Remove OperationType = "remove"
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Set OperationType = "set"
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Clear OperationType = "clear"
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)
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// WatchAddressArg is a arg type for WatchAddress API
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type WatchAddressArg struct {
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// Address represents common.Address
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Address string
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CreatedAt uint64
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}
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