state

package
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 Go to latest Published: Dec 7, 2022 License: GPL-3.0, LGPL-3.0, LGPL-3.0-or-later Imports: 22 Imported by: 0

Documentation

Overview

Package state provides a caching layer atop the Ethereum state trie.

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func AddCachedTickets 

func AddCachedTickets(hash common.Hash, tickets common.TicketsDataSlice) error

func GetCachedTickets 

func GetCachedTickets(hash common.Hash) common.TicketsDataSlice

func NewStateSync 

func NewStateSync(root common.Hash, database ethdb.KeyValueReader, bloom *trie.SyncBloom, onLeaf func(paths [][]byte, leaf []byte) error) *trie.Sync

NewStateSync create a new state trie download scheduler.

Types

type Account 

type Account struct {
	Nonce   uint64
	Notaion uint64

	BalancesHash []common.Hash
	BalancesVal  []*big.Int

	TimeLockBalancesHash []common.Hash
	TimeLockBalancesVal  []*common.TimeLock

	Root     common.Hash // merkle root of the storage trie
	CodeHash []byte
}

Account is the Ethereum consensus representation of accounts. These objects are stored in the main account trie.

type CachedTicketSlice 

type CachedTicketSlice struct {
	// contains filtered or unexported fields
}

func (*CachedTicketSlice) Add 

func (cts *CachedTicketSlice) Add(hash common.Hash, tickets common.TicketsDataSlice)

func (*CachedTicketSlice) Get 

func (cts *CachedTicketSlice) Get(hash common.Hash) common.TicketsDataSlice

type CachedTickets 

type CachedTickets struct {
	// contains filtered or unexported fields
}

type Code 

type Code []byte

func (Code) String 

func (c Code) String() string

type Database 

type Database interface {
	// OpenTrie opens the main account trie.
	OpenTrie(root common.Hash) (Trie, error)

	// OpenStorageTrie opens the storage trie of an account.
	OpenStorageTrie(addrHash, root common.Hash) (Trie, error)

	// CopyTrie returns an independent copy of the given trie.
	CopyTrie(Trie) Trie

	// ContractCode retrieves a particular contract's code.
	ContractCode(addrHash, codeHash common.Hash) ([]byte, error)

	// ContractCodeSize retrieves a particular contracts code's size.
	ContractCodeSize(addrHash, codeHash common.Hash) (int, error)

	// TrieDB retrieves the low level trie database used for data storage.
	TrieDB() *trie.Database
}

Database wraps access to tries and contract code.

func NewDatabase 

func NewDatabase(db ethdb.Database) Database

NewDatabase creates a backing store for state. The returned database is safe for concurrent use, but does not retain any recent trie nodes in memory. To keep some historical state in memory, use the NewDatabaseWithConfig constructor.

func NewDatabaseWithConfig 

func NewDatabaseWithConfig(db ethdb.Database, config *trie.Config) Database

NewDatabaseWithConfig creates a backing store for state. The returned database is safe for concurrent use and retains a lot of collapsed RLP trie nodes in a large memory cache.

type Dump 

type Dump struct {
	Root     string                         `json:"root"`
	Accounts map[common.Address]DumpAccount `json:"accounts"`
}

Dump represents the full dump in a collected format, as one large map.

func (*Dump) OnAccount 

func (d *Dump) OnAccount(addr common.Address, account DumpAccount)

OnAccount implements DumpCollector interface

func (*Dump) OnRoot 

func (d *Dump) OnRoot(root common.Hash)

OnRoot implements DumpCollector interface

type DumpAccount 

type DumpAccount struct {
	Balances         map[common.Hash]*big.Int         `json:"balance"`
	TimeLockBalances map[common.Hash]*common.TimeLock `json:"timelock"`
	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
	SecureKey        hexutil.Bytes                    `json:"key,omitempty"`     // If we don't have address, we can output the key
}

DumpAccount represents an account in the state.

type DumpCollector 

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)
}

DumpCollector interface which the state trie calls during iteration

type DumpConfig 

type DumpConfig struct {
	SkipCode          bool
	SkipStorage       bool
	OnlyWithAddresses bool
	Start             []byte
	Max               uint64
}

DumpConfig is a set of options to control what portions of the state will be iterated and collected.

type IteratorDump 

type IteratorDump struct {
	Root     string                         `json:"root"`
	Accounts map[common.Address]DumpAccount `json:"accounts"`
	Next     []byte                         `json:"next,omitempty"` // nil if no more accounts
}

IteratorDump is an implementation for iterating over data.

func (*IteratorDump) OnAccount 

func (d *IteratorDump) OnAccount(addr common.Address, account DumpAccount)

OnAccount implements DumpCollector interface

func (*IteratorDump) OnRoot 

func (d *IteratorDump) OnRoot(root common.Hash)

OnRoot implements DumpCollector interface

type NodeIterator 

type NodeIterator struct {
	Hash   common.Hash // Hash of the current entry being iterated (nil if not standalone)
	Parent common.Hash // Hash of the first full ancestor node (nil if current is the root)

	Error error // Failure set in case of an internal error in the iterator
	// contains filtered or unexported fields
}

NodeIterator is an iterator to traverse the entire state trie post-order, including all of the contract code and contract state tries.

func NewNodeIterator 

func NewNodeIterator(state *StateDB) *NodeIterator

NewNodeIterator creates an post-order state node iterator.

func (*NodeIterator) Next 

func (it *NodeIterator) Next() bool

Next moves the iterator to the next node, returning whether there are any further nodes. In case of an internal error this method returns false and sets the Error field to the encountered failure.

type StateDB 

type StateDB struct {
	// contains filtered or unexported fields
}

StateDB structs within the ethereum protocol are used to store anything within the merkle trie. StateDBs take care of caching and storing nested states. It's the general query interface to retrieve: * Contracts * Accounts

func New 

func New(root common.Hash, mixDigest common.Hash, db Database) (*StateDB, error)

Create a new state from a given trie.

func (*StateDB) AddAddressToAccessList 

func (s *StateDB) AddAddressToAccessList(addr common.Address)

AddAddressToAccessList adds the given address to the access list

func (*StateDB) AddBalance 

func (s *StateDB) AddBalance(addr common.Address, assetID common.Hash, amount *big.Int)

AddBalance adds amount to the account associated with addr.

func (*StateDB) AddLog 

func (s *StateDB) AddLog(log *types.Log)

func (*StateDB) AddMultiSwap 

func (s *StateDB) AddMultiSwap(swap common.MultiSwap) error

AddMultiSwap wacom

func (*StateDB) AddPreimage 

func (s *StateDB) AddPreimage(hash common.Hash, preimage []byte)

AddPreimage records a SHA3 preimage seen by the VM.

func (*StateDB) AddRefund 

func (s *StateDB) AddRefund(gas uint64)

AddRefund adds gas to the refund counter

func (*StateDB) AddReport 

func (s *StateDB) AddReport(report []byte) error

AddReport wacom

func (*StateDB) AddSlotToAccessList 

func (s *StateDB) AddSlotToAccessList(addr common.Address, slot common.Hash)

AddSlotToAccessList adds the given (address, slot)-tuple to the access list

func (*StateDB) AddSwap 

func (s *StateDB) AddSwap(swap common.Swap) error

AddSwap wacom

func (*StateDB) AddTicket 

func (s *StateDB) AddTicket(ticket common.Ticket) error

AddTicket wacom

func (*StateDB) AddTimeLockBalance 

func (s *StateDB) AddTimeLockBalance(addr common.Address, assetID common.Hash, amount *common.TimeLock, timestamp uint64)

func (*StateDB) AddressInAccessList 

func (s *StateDB) AddressInAccessList(addr common.Address) bool

AddressInAccessList returns true if the given address is in the access list.

func (*StateDB) AllAssets 

func (s *StateDB) AllAssets() (map[common.Hash]common.Asset, error)

AllAssets wacom

func (*StateDB) AllNotation 

func (s *StateDB) AllNotation() ([]common.Address, error)

AllNotation wacom

func (*StateDB) AllSwaps 

func (s *StateDB) AllSwaps() (map[common.Hash]common.Swap, error)

AllSwaps wacom

func (*StateDB) AllTickets 

func (s *StateDB) AllTickets() (common.TicketsDataSlice, error)

AllTickets wacom

func (*StateDB) BurnNotation 

func (s *StateDB) BurnNotation(addr common.Address)

func (*StateDB) CalcNotationDisplay 

func (s *StateDB) CalcNotationDisplay(notation uint64) uint64

CalcNotationDisplay wacom

func (*StateDB) ClearTickets 

func (s *StateDB) ClearTickets(from, to common.Address, timestamp uint64)

func (*StateDB) Commit 

func (s *StateDB) Commit(deleteEmptyObjects bool) (common.Hash, error)

Commit writes the state to the underlying in-memory trie database.

func (*StateDB) Copy 

func (s *StateDB) Copy() *StateDB

Copy creates a deep, independent copy of the state. Snapshots of the copied state cannot be applied to the copy.

func (*StateDB) CreateAccount 

func (s *StateDB) CreateAccount(addr common.Address)

CreateAccount explicitly creates a state object. If a state object with the address already exists the balance is carried over to the new account.

CreateAccount is called during the EVM CREATE operation. The situation might arise that a contract does the following:

  1. sends funds to sha(account ++ (nonce + 1))
  2. tx_create(sha(account ++ nonce)) (note that this gets the address of 1)

Carrying over the balance ensures that Ether doesn't disappear.

func (*StateDB) Database 

func (s *StateDB) Database() Database

Database retrieves the low level database supporting the lower level trie ops.

func (*StateDB) Dump 

func (s *StateDB) Dump(opts *DumpConfig) []byte

Dump returns a JSON string representing the entire state as a single json-object

func (*StateDB) DumpToCollector 

func (s *StateDB) DumpToCollector(c DumpCollector, conf *DumpConfig) (nextKey []byte)

DumpToCollector iterates the state according to the given options and inserts the items into a collector for aggregation or serialization.

func (*StateDB) Empty 

func (s *StateDB) Empty(addr common.Address) bool

Empty returns whether the state object is either non-existent or empty according to the EIP161 specification (balance = nonce = code = 0)

func (*StateDB) Error 

func (s *StateDB) Error() error

func (*StateDB) Exist 

func (s *StateDB) Exist(addr common.Address) bool

Exist reports whether the given account address exists in the state. Notably this also returns true for suicided accounts.

func (*StateDB) Finalise 

func (s *StateDB) Finalise(deleteEmptyObjects bool)

Finalise finalises the state by removing the s destructed objects and clears the journal as well as the refunds. Finalise, however, will not push any updates into the tries just yet. Only IntermediateRoot or Commit will do that.

func (*StateDB) ForEachStorage 

func (s *StateDB) ForEachStorage(addr common.Address, cb func(key, value common.Hash) bool)

func (*StateDB) GenAsset 

func (s *StateDB) GenAsset(asset common.Asset) error

GenAsset wacom

func (*StateDB) GenNotation 

func (s *StateDB) GenNotation(addr common.Address) error

GenNotation wacom

func (*StateDB) GetAddressByNotation 

func (s *StateDB) GetAddressByNotation(notation uint64) (common.Address, error)

GetAddressByNotation wacom

func (*StateDB) GetAllBalances 

func (s *StateDB) GetAllBalances(addr common.Address) map[common.Hash]string

func (*StateDB) GetAllTimeLockBalances 

func (s *StateDB) GetAllTimeLockBalances(addr common.Address) map[common.Hash]*common.TimeLock

func (*StateDB) GetAsset 

func (s *StateDB) GetAsset(assetID common.Hash) (common.Asset, error)

GetAsset wacom

func (*StateDB) GetBalance 

func (s *StateDB) GetBalance(assetID common.Hash, addr common.Address) *big.Int

func (*StateDB) GetCode 

func (s *StateDB) GetCode(addr common.Address) []byte

func (*StateDB) GetCodeHash 

func (s *StateDB) GetCodeHash(addr common.Address) common.Hash

func (*StateDB) GetCodeSize 

func (s *StateDB) GetCodeSize(addr common.Address) int

func (*StateDB) GetCommittedState 

func (s *StateDB) GetCommittedState(addr common.Address, hash common.Hash) common.Hash

GetCommittedState retrieves a value from the given account's committed storage trie.

func (*StateDB) GetData 

func (s *StateDB) GetData(addr common.Address) []byte

func (*StateDB) GetDataHash 

func (s *StateDB) GetDataHash(addr common.Address) common.Hash

func (*StateDB) GetLogs 

func (s *StateDB) GetLogs(hash common.Hash, blockHash common.Hash) []*types.Log

func (*StateDB) GetMultiSwap 

func (s *StateDB) GetMultiSwap(swapID common.Hash) (common.MultiSwap, error)

GetMultiSwap wacom

func (*StateDB) GetNonce 

func (s *StateDB) GetNonce(addr common.Address) uint64

func (*StateDB) GetNotation 

func (s *StateDB) GetNotation(addr common.Address) uint64

GetNotation wacom

func (*StateDB) GetNotationCount 

func (s *StateDB) GetNotationCount() (uint64, error)

func (*StateDB) GetOrNewStateObject 

func (s *StateDB) GetOrNewStateObject(addr common.Address) *stateObject

GetOrNewStateObject retrieves a state object or create a new state object if nil.

func (*StateDB) GetRefund 

func (s *StateDB) GetRefund() uint64

GetRefund returns the current value of the refund counter.

func (*StateDB) GetState 

func (s *StateDB) GetState(addr common.Address, hash common.Hash) common.Hash

GetState retrieves a value from the given account's storage trie.

func (*StateDB) GetStructData 

func (s *StateDB) GetStructData(addr common.Address, key []byte) []byte

GetStructData wacom

func (*StateDB) GetSwap 

func (s *StateDB) GetSwap(swapID common.Hash) (common.Swap, error)

GetSwap wacom

func (*StateDB) GetTicket 

func (s *StateDB) GetTicket(id common.Hash) (*common.Ticket, error)

GetTicket wacom

func (*StateDB) GetTimeLockBalance 

func (s *StateDB) GetTimeLockBalance(assetID common.Hash, addr common.Address) *common.TimeLock

func (*StateDB) HasSuicided 

func (s *StateDB) HasSuicided(addr common.Address) bool

func (*StateDB) IntermediateRoot 

func (s *StateDB) IntermediateRoot(deleteEmptyObjects bool) common.Hash

IntermediateRoot computes the current root hash of the state trie. It is called in between transactions to get the root hash that goes into transaction receipts.

func (*StateDB) IsReportExist 

func (s *StateDB) IsReportExist(report []byte) bool

GetReport wacom

func (*StateDB) IsTicketExist 

func (s *StateDB) IsTicketExist(id common.Hash) bool

IsTicketExist wacom

func (*StateDB) IterativeDump 

func (s *StateDB) IterativeDump(opts *DumpConfig, output *json.Encoder)

IterativeDump dumps out accounts as json-objects, delimited by linebreaks on stdout

func (*StateDB) IteratorDump 

func (s *StateDB) IteratorDump(opts *DumpConfig) IteratorDump

IteratorDump dumps out a batch of accounts starts with the given start key

func (*StateDB) Logs 

func (s *StateDB) Logs() []*types.Log

func (*StateDB) Preimages 

func (s *StateDB) Preimages() map[common.Hash][]byte

Preimages returns a list of SHA3 preimages that have been submitted.

func (*StateDB) Prepare 

func (s *StateDB) Prepare(thash common.Hash, ti int)

Prepare sets the current transaction hash and index and block hash which is used when the EVM emits new state logs.

func (*StateDB) PrepareAccessList 

func (s *StateDB) PrepareAccessList(sender common.Address, dst *common.Address, precompiles []common.Address, list types.AccessList)

PrepareAccessList handles the preparatory steps for executing a state transition with regards to both EIP-2929 and EIP-2930:

- Add sender to access list (2929) - Add destination to access list (2929) - Add precompiles to access list (2929) - Add the contents of the optional tx access list (2930)

This method should only be called if Berlin/2929+2930 is applicable at the current number.

func (*StateDB) ProcessMatureFSN 

func (s *StateDB) ProcessMatureFSN(addr common.Address, timestamp, blockNbr uint64)

func (*StateDB) RawDump 

func (s *StateDB) RawDump(opts *DumpConfig) Dump

RawDump returns the entire state an a single large object

func (*StateDB) RemoveMultiSwap 

func (s *StateDB) RemoveMultiSwap(id common.Hash) error

RemoveSwap wacom

func (*StateDB) RemoveSwap 

func (s *StateDB) RemoveSwap(id common.Hash) error

RemoveSwap wacom

func (*StateDB) RemoveTicket 

func (s *StateDB) RemoveTicket(id common.Hash) error

RemoveTicket wacom

func (*StateDB) Reset 

func (s *StateDB) Reset(root common.Hash) error

Reset clears out all ephemeral state objects from the state db, but keeps the underlying state trie to avoid reloading data for the next operations.

func (*StateDB) RevertToSnapshot 

func (s *StateDB) RevertToSnapshot(revid int)

RevertToSnapshot reverts all state changes made since the given revision.

func (*StateDB) SetBalance 

func (s *StateDB) SetBalance(addr common.Address, assetID common.Hash, amount *big.Int)

func (*StateDB) SetCode 

func (s *StateDB) SetCode(addr common.Address, code []byte)

func (*StateDB) SetData 

func (s *StateDB) SetData(addr common.Address, value []byte) common.Hash

func (*StateDB) SetNonce 

func (s *StateDB) SetNonce(addr common.Address, nonce uint64)

func (*StateDB) SetState 

func (s *StateDB) SetState(addr common.Address, key, value common.Hash)

func (*StateDB) SetStorage 

func (s *StateDB) SetStorage(addr common.Address, storage map[common.Hash]common.Hash)

SetStorage replaces the entire storage for the specified account with given storage. This function should only be used for debugging.

func (*StateDB) SetStructData 

func (s *StateDB) SetStructData(addr common.Address, key, value []byte)

SetStructData wacom

func (*StateDB) SetTimeLockBalance 

func (s *StateDB) SetTimeLockBalance(addr common.Address, assetID common.Hash, amount *common.TimeLock)

func (*StateDB) SlotInAccessList 

func (s *StateDB) SlotInAccessList(addr common.Address, slot common.Hash) (addressPresent bool, slotPresent bool)

SlotInAccessList returns true if the given (address, slot)-tuple is in the access list.

func (*StateDB) Snapshot 

func (s *StateDB) Snapshot() int

Snapshot returns an identifier for the current revision of the state.

func (*StateDB) StorageTrie 

func (s *StateDB) StorageTrie(addr common.Address) Trie

StorageTrie returns the storage trie of an account. The return value is a copy and is nil for non-existent accounts.

func (*StateDB) SubBalance 

func (s *StateDB) SubBalance(addr common.Address, assetID common.Hash, amount *big.Int)

SubBalance subtracts amount from the account associated with addr.

func (*StateDB) SubRefund 

func (s *StateDB) SubRefund(gas uint64)

SubRefund removes gas from the refund counter. This method will panic if the refund counter goes below zero

func (*StateDB) SubTimeLockBalance 

func (s *StateDB) SubTimeLockBalance(addr common.Address, assetID common.Hash, amount *common.TimeLock, timestamp uint64)

func (*StateDB) Suicide 

func (s *StateDB) Suicide(addr common.Address) bool

Suicide marks the given account as suicided. This clears the account balance.

The account's state object is still available until the state is committed, getStateObject will return a non-nil account after Suicide.

func (*StateDB) TotalNumberOfTickets 

func (s *StateDB) TotalNumberOfTickets() uint64

func (*StateDB) TransferAll 

func (s *StateDB) TransferAll(from, to common.Address, timestamp uint64)

func (*StateDB) TransferNotation 

func (s *StateDB) TransferNotation(notation uint64, from common.Address, to common.Address) error

TransferNotation wacom

func (*StateDB) TxIndex 

func (s *StateDB) TxIndex() int

TxIndex returns the current transaction index set by Prepare.

func (*StateDB) UpdateAsset 

func (s *StateDB) UpdateAsset(asset common.Asset) error

UpdateAsset wacom

func (*StateDB) UpdateMultiSwap 

func (s *StateDB) UpdateMultiSwap(swap common.MultiSwap) error

UpdateMultiSwap wacom

func (*StateDB) UpdateSwap 

func (s *StateDB) UpdateSwap(swap common.Swap) error

UpdateSwap wacom

func (*StateDB) UpdateTickets 

func (s *StateDB) UpdateTickets(blockNumber *big.Int, timestamp uint64) (common.Hash, error)

type Storage 

type Storage map[common.Hash]common.Hash

func (Storage) Copy 

func (s Storage) Copy() Storage

func (Storage) String 

func (s Storage) String() (str string)

type Trie 

type Trie interface {
	// GetKey returns the sha3 preimage of a hashed key that was previously used
	// to store a value.
	//
	// TODO(fjl): remove this when SecureTrie is removed
	GetKey([]byte) []byte

	// TryGet returns the value for key stored in the trie. The value bytes must
	// not be modified by the caller. If a node was not found in the database, a
	// trie.MissingNodeError is returned.
	TryGet(key []byte) ([]byte, error)

	// TryUpdate associates key with value in the trie. If value has length zero, any
	// existing value is deleted from the trie. The value bytes must not be modified
	// by the caller while they are stored in the trie. If a node was not found in the
	// database, a trie.MissingNodeError is returned.
	TryUpdate(key, value []byte) error

	// TryDelete removes any existing value for key from the trie. If a node was not
	// found in the database, a trie.MissingNodeError is returned.
	TryDelete(key []byte) error

	// Hash returns the root hash of the trie. It does not write to the database and
	// can be used even if the trie doesn't have one.
	Hash() common.Hash

	// Commit writes all nodes to the trie's memory database, tracking the internal
	// and external (for account tries) references.
	Commit(onleaf trie.LeafCallback) (common.Hash, error)

	// NodeIterator returns an iterator that returns nodes of the trie. Iteration
	// starts at the key after the given start key.
	NodeIterator(startKey []byte) trie.NodeIterator

	// Prove constructs a Merkle proof for key. The result contains all encoded nodes
	// on the path to the value at key. The value itself is also included in the last
	// node and can be retrieved by verifying the proof.
	//
	// If the trie does not contain a value for key, the returned proof contains all
	// nodes of the longest existing prefix of the key (at least the root), ending
	// with the node that proves the absence of the key.
	Prove(key []byte, fromLevel uint, proofDb ethdb.KeyValueWriter) error
}

Trie is a Ethereum Merkle Patricia trie.

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