plugeth/core/state/dump.go

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// Copyright 2014 The go-ethereum Authors
// This file is part of the go-ethereum library.
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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
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// 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
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package state
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import (
"encoding/json"
"fmt"
"time"
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"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/log"
"github.com/ethereum/go-ethereum/rlp"
"github.com/ethereum/go-ethereum/trie"
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)
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// DumpConfig is a set of options to control what portions of the state will be
// iterated and collected.
type DumpConfig struct {
SkipCode bool
SkipStorage bool
OnlyWithAddresses bool
Start []byte
Max uint64
}
// DumpCollector interface which the state trie calls during iteration
type DumpCollector interface {
// OnRoot is called with the state root
OnRoot(common.Hash)
// OnAccount is called once for each account in the trie
OnAccount(*common.Address, DumpAccount)
}
// DumpAccount represents an account in the state.
type DumpAccount struct {
Balance string `json:"balance"`
Nonce uint64 `json:"nonce"`
Root hexutil.Bytes `json:"root"`
CodeHash hexutil.Bytes `json:"codeHash"`
Code hexutil.Bytes `json:"code,omitempty"`
Storage map[common.Hash]string `json:"storage,omitempty"`
Address *common.Address `json:"address,omitempty"` // Address only present in iterative (line-by-line) mode
AddressHash hexutil.Bytes `json:"key,omitempty"` // If we don't have address, we can output the key
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}
// Dump represents the full dump in a collected format, as one large map.
type Dump struct {
Root string `json:"root"`
Accounts map[string]DumpAccount `json:"accounts"`
// Next can be set to represent that this dump is only partial, and Next
// is where an iterator should be positioned in order to continue the dump.
Next []byte `json:"next,omitempty"` // nil if no more accounts
}
// OnRoot implements DumpCollector interface
func (d *Dump) OnRoot(root common.Hash) {
d.Root = fmt.Sprintf("%x", root)
}
// OnAccount implements DumpCollector interface
func (d *Dump) OnAccount(addr *common.Address, account DumpAccount) {
if addr == nil {
d.Accounts[fmt.Sprintf("pre(%s)", account.AddressHash)] = account
}
if addr != nil {
d.Accounts[(*addr).String()] = account
}
}
// iterativeDump is a DumpCollector-implementation which dumps output line-by-line iteratively.
type iterativeDump struct {
*json.Encoder
}
// OnAccount implements DumpCollector interface
func (d iterativeDump) OnAccount(addr *common.Address, account DumpAccount) {
dumpAccount := &DumpAccount{
Balance: account.Balance,
Nonce: account.Nonce,
Root: account.Root,
CodeHash: account.CodeHash,
Code: account.Code,
Storage: account.Storage,
AddressHash: account.AddressHash,
Address: addr,
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}
d.Encode(dumpAccount)
}
// OnRoot implements DumpCollector interface
func (d iterativeDump) OnRoot(root common.Hash) {
d.Encode(struct {
Root common.Hash `json:"root"`
}{root})
}
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// DumpToCollector iterates the state according to the given options and inserts
// the items into a collector for aggregation or serialization.
func (s *StateDB) DumpToCollector(c DumpCollector, conf *DumpConfig) (nextKey []byte) {
// Sanitize the input to allow nil configs
if conf == nil {
conf = new(DumpConfig)
}
var (
missingPreimages int
accounts uint64
start = time.Now()
logged = time.Now()
)
log.Info("Trie dumping started", "root", s.trie.Hash())
c.OnRoot(s.trie.Hash())
trieIt, err := s.trie.NodeIterator(conf.Start)
if err != nil {
log.Error("Trie dumping error", "err", err)
return nil
}
it := trie.NewIterator(trieIt)
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for it.Next() {
var data types.StateAccount
if err := rlp.DecodeBytes(it.Value, &data); err != nil {
panic(err)
}
var (
account = DumpAccount{
Balance: data.Balance.String(),
Nonce: data.Nonce,
Root: data.Root[:],
CodeHash: data.CodeHash,
AddressHash: it.Key,
}
address *common.Address
addr common.Address
addrBytes = s.trie.GetKey(it.Key)
)
if addrBytes == nil {
missingPreimages++
if conf.OnlyWithAddresses {
continue
}
} else {
addr = common.BytesToAddress(addrBytes)
address = &addr
account.Address = address
}
obj := newObject(s, addr, &data)
if !conf.SkipCode {
account.Code = obj.Code()
}
if !conf.SkipStorage {
account.Storage = make(map[common.Hash]string)
tr, err := obj.getTrie()
if err != nil {
log.Error("Failed to load storage trie", "err", err)
continue
}
trieIt, err := tr.NodeIterator(nil)
if err != nil {
log.Error("Failed to create trie iterator", "err", err)
continue
}
storageIt := trie.NewIterator(trieIt)
for storageIt.Next() {
_, content, _, err := rlp.Split(storageIt.Value)
if err != nil {
log.Error("Failed to decode the value returned by iterator", "error", err)
continue
}
account.Storage[common.BytesToHash(s.trie.GetKey(storageIt.Key))] = common.Bytes2Hex(content)
}
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}
c.OnAccount(address, account)
accounts++
if time.Since(logged) > 8*time.Second {
log.Info("Trie dumping in progress", "at", it.Key, "accounts", accounts,
"elapsed", common.PrettyDuration(time.Since(start)))
logged = time.Now()
}
if conf.Max > 0 && accounts >= conf.Max {
if it.Next() {
nextKey = it.Key
}
break
}
}
if missingPreimages > 0 {
log.Warn("Dump incomplete due to missing preimages", "missing", missingPreimages)
}
log.Info("Trie dumping complete", "accounts", accounts,
"elapsed", common.PrettyDuration(time.Since(start)))
return nextKey
}
// RawDump returns the state. If the processing is aborted e.g. due to options
// reaching Max, the `Next` key is set on the returned Dump.
func (s *StateDB) RawDump(opts *DumpConfig) Dump {
dump := &Dump{
Accounts: make(map[string]DumpAccount),
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}
dump.Next = s.DumpToCollector(dump, opts)
return *dump
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}
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// Dump returns a JSON string representing the entire state as a single json-object
func (s *StateDB) Dump(opts *DumpConfig) []byte {
dump := s.RawDump(opts)
json, err := json.MarshalIndent(dump, "", " ")
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if err != nil {
log.Error("Error dumping state", "err", err)
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}
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return json
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}
// IterativeDump dumps out accounts as json-objects, delimited by linebreaks on stdout
func (s *StateDB) IterativeDump(opts *DumpConfig, output *json.Encoder) {
s.DumpToCollector(iterativeDump{output}, opts)
}