mirror of
https://github.com/ethereum/go-ethereum.git
synced 2026-06-08 07:58:40 +00:00
131 lines
4.7 KiB
Go
131 lines
4.7 KiB
Go
// Copyright 2025 The go-ethereum Authors
|
|
// This file is part of the go-ethereum library.
|
|
//
|
|
// The go-ethereum library is free software: you can redistribute it and/or modify
|
|
// 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,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// 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/>.
|
|
|
|
package overlay
|
|
|
|
import (
|
|
"github.com/ethereum/go-ethereum/common"
|
|
"github.com/ethereum/go-ethereum/params"
|
|
)
|
|
|
|
// Storage slots used by the binary transition registry system contract at
|
|
// params.BinaryTransitionRegistryAddress.
|
|
var (
|
|
transitionStartedKey = common.Hash{}
|
|
conversionProgressAddressKey = common.BytesToHash([]byte{1})
|
|
conversionProgressSlotKey = common.BytesToHash([]byte{2})
|
|
conversionProgressStorageProcessed = common.BytesToHash([]byte{3})
|
|
transitionEndedKey = common.BytesToHash([]byte{4})
|
|
baseRootKey = common.BytesToHash([]byte{5})
|
|
)
|
|
|
|
// StorageReader is a minimal interface for reading contract storage slots.
|
|
type StorageReader interface {
|
|
Storage(addr common.Address, slot common.Hash) (common.Hash, error)
|
|
}
|
|
|
|
// TransitionState is a structure that holds the progress markers of the
|
|
// translation process.
|
|
type TransitionState struct {
|
|
CurrentAccountAddress *common.Address // address of the last translated account
|
|
CurrentSlotHash common.Hash // hash of the last translated storage slot
|
|
Started, Ended bool
|
|
|
|
// StorageProcessed marks whether the storage of the current account has
|
|
// been fully processed. Useful when the maximum number of leaves of the
|
|
// conversion is reached before the storage is exhausted.
|
|
StorageProcessed bool
|
|
|
|
BaseRoot common.Hash // frozen MPT base root captured at the fork block
|
|
}
|
|
|
|
// InTransition returns true if the translation process is in progress.
|
|
func (ts *TransitionState) InTransition() bool {
|
|
return ts != nil && ts.Started && !ts.Ended
|
|
}
|
|
|
|
// Transitioned returns true if the translation process has been completed.
|
|
func (ts *TransitionState) Transitioned() bool {
|
|
return ts != nil && ts.Ended
|
|
}
|
|
|
|
// Copy returns a deep copy of the TransitionState object.
|
|
func (ts *TransitionState) Copy() *TransitionState {
|
|
ret := &TransitionState{
|
|
Started: ts.Started,
|
|
Ended: ts.Ended,
|
|
CurrentSlotHash: ts.CurrentSlotHash,
|
|
StorageProcessed: ts.StorageProcessed,
|
|
BaseRoot: ts.BaseRoot,
|
|
}
|
|
if ts.CurrentAccountAddress != nil {
|
|
addr := *ts.CurrentAccountAddress
|
|
ret.CurrentAccountAddress = &addr
|
|
}
|
|
return ret
|
|
}
|
|
|
|
// IsTransitionActive checks whether the binary transition registry has been
|
|
// initialised by reading slot 0 (started) from the system contract.
|
|
func IsTransitionActive(reader StorageReader) bool {
|
|
val, err := reader.Storage(params.BinaryTransitionRegistryAddress, transitionStartedKey)
|
|
if err != nil {
|
|
return false
|
|
}
|
|
return val != (common.Hash{})
|
|
}
|
|
|
|
// LoadTransitionState reads the full transition state from the binary
|
|
// transition registry system contract storage. Returns nil when the
|
|
// registry has not been initialised (i.e. the chain has not yet reached the
|
|
// UBT fork block).
|
|
func LoadTransitionState(reader StorageReader) (*TransitionState, error) {
|
|
started, err := reader.Storage(params.BinaryTransitionRegistryAddress, transitionStartedKey)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if started == (common.Hash{}) {
|
|
return nil, nil
|
|
}
|
|
|
|
ended, _ := reader.Storage(params.BinaryTransitionRegistryAddress, transitionEndedKey)
|
|
baseRoot, _ := reader.Storage(params.BinaryTransitionRegistryAddress, baseRootKey)
|
|
|
|
var currentAddr *common.Address
|
|
addrVal, _ := reader.Storage(params.BinaryTransitionRegistryAddress, conversionProgressAddressKey)
|
|
if addrVal != (common.Hash{}) {
|
|
addr := common.BytesToAddress(addrVal.Bytes())
|
|
currentAddr = &addr
|
|
}
|
|
|
|
slotHash, err := reader.Storage(params.BinaryTransitionRegistryAddress, conversionProgressSlotKey)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
storageProcessed, err := reader.Storage(params.BinaryTransitionRegistryAddress, conversionProgressStorageProcessed)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return &TransitionState{
|
|
Started: true,
|
|
Ended: ended != (common.Hash{}),
|
|
BaseRoot: baseRoot,
|
|
CurrentAccountAddress: currentAddr,
|
|
CurrentSlotHash: slotHash,
|
|
StorageProcessed: storageProcessed != (common.Hash{}),
|
|
}, nil
|
|
}
|