state

package
v0.7.0-hotfix.3-dev Latest Latest
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 Go to latest Published: May 5, 2019 License: GPL-3.0 Imports: 19 Imported by: 13

Documentation

Overview

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

Index

Constants

This section is empty.

Variables

View Source 
var (
	EmptyAddress = common.BytesToAddress(crypto.Keccak512(nil))

	TrueHash  = common.HexToHash("0x0000000000000000000000000000000000000000000000000000000000000001")
	FalseHash = common.HexToHash("0x0000000000000000000000000000000000000000000000000000000000000000")
)
View Source 
var MaxTrieCacheGen = uint16(120)

Trie cache generation limit after which to evict trie nodes from memory.

Functions

func GetAndIndNonce 

func GetAndIndNonce() uint64

func NewStateSync 

func NewStateSync(root common.Hash, database trie.DatabaseReader) *trie.Sync

NewStateSync create a new state trie download scheduler.

Types

type Account 

type Account struct {
	TicketNonce uint64
	//Balance   *big.Int
	Root     common.Hash // merkle root of the storage trie
	CodeHash []byte
	Books    []*Book
	// contains filtered or unexported fields
}

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

type Book 

type Book struct {
	Balance  *big.Int
	Currency string
}

type Code 

type Code []byte

func (Code) String 

func (self 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 serodb.Database) Database

NewDatabase creates a backing store for state. The returned database is safe for concurrent use and retains cached trie nodes in memory. The pool is an optional intermediate trie-node memory pool between the low level storage layer and the high level trie abstraction.

type Dump 

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

type DumpAccount 

type DumpAccount struct {
	Balance string `json:"balance"`
	//Nonce    uint64            `json:"nonce"`
	Root     string            `json:"root"`
	CodeHash string            `json:"codeHash"`
	Code     string            `json:"code"`
	Storage  map[string]string `json:"storage"`
}

type ManagedState 

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

func ManageState 

func ManageState(statedb *StateDB) *ManagedState

ManagedState returns a new managed state with the statedb as it's backing layer

func (*ManagedState) GetAllNonceAddress 

func (ms *ManagedState) GetAllNonceAddress(addr common.Address) []common.Address

func (*ManagedState) GetNonceAddress 

func (ms *ManagedState) GetNonceAddress(addr common.Address, key []byte) common.Address

func (*ManagedState) GetZState 

func (ms *ManagedState) GetZState() *zstate.ZState

func (*ManagedState) HasAccount 

func (ms *ManagedState) HasAccount(addr common.Address) bool

HasAccount returns whether the given address is managed or not

func (*ManagedState) IsContract 

func (ms *ManagedState) IsContract(addr common.Address) bool

func (*ManagedState) SetState 

func (ms *ManagedState) SetState(statedb *StateDB)

SetState sets the backing layer of the managed state

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
}

StateDBs 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, db Database, number uint64) (*StateDB, error)

Create a new state from a given trie.

func NewGenesis 

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

func (*StateDB) AddBalance 

func (self *StateDB) AddBalance(addr common.Address, coinName string, amount *big.Int)

AddBalance adds amount to the account associated with addr.

func (*StateDB) AddLog 

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

func (*StateDB) AddNonceAddress 

func (self *StateDB) AddNonceAddress(key []byte, nonceAddr common.Address)

func (*StateDB) AddPreimage 

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

AddPreimage records a SHA3 preimage seen by the VM.

func (*StateDB) AddRefund 

func (self *StateDB) AddRefund(gas uint64)

func (*StateDB) AddTicket 

func (self *StateDB) AddTicket(contractAddr common.Address, categoryName string, value common.Hash)

func (*StateDB) Balances 

func (self *StateDB) Balances(addr common.Address) map[string]*big.Int

func (*StateDB) Commit 

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

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

func (*StateDB) Copy 

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

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

func (*StateDB) Database 

func (self *StateDB) Database() Database

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

func (*StateDB) Dump 

func (self *StateDB) Dump() []byte

func (*StateDB) Empty 

func (self *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 (self *StateDB) Error() error

func (*StateDB) Exist 

func (self *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 self destructed objects and clears the journal as well as the refunds.

func (*StateDB) ForEachOuts 

func (db *StateDB) ForEachOuts(cb func(key, value common.Hash) bool)

func (*StateDB) ForEachStorage 

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

func (*StateDB) GetAvgUsedGas 

func (self *StateDB) GetAvgUsedGas(number uint64) *big.Int

func (*StateDB) GetBalance 

func (self *StateDB) GetBalance(addr common.Address, coinName string) *big.Int

Retrieve the balance from the given address or 0 if object not found

func (*StateDB) GetCode 

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

func (*StateDB) GetCodeHash 

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

func (*StateDB) GetCodeSize 

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

func (*StateDB) GetContrctAddressByTicket 

func (self *StateDB) GetContrctAddressByTicket(categoryName string) common.Address

func (*StateDB) GetContrctAddressByToken 

func (self *StateDB) GetContrctAddressByToken(coinName string) common.Address

func (*StateDB) GetContrctNonce 

func (self *StateDB) GetContrctNonce() uint64

func (*StateDB) GetLogs 

func (self *StateDB) GetLogs(hash common.Hash) []*types.Log

func (*StateDB) GetNonceAddress 

func (self *StateDB) GetNonceAddress(key []byte) common.Address

func (*StateDB) GetOrNewStateObject 

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

Retrieve a state object or create a new state object if nil.

func (*StateDB) GetPkgState 

func (self *StateDB) GetPkgState() *pkgstate.PkgState

func (*StateDB) GetRefund 

func (self *StateDB) GetRefund() uint64

GetRefund returns the current value of the refund counter.

func (*StateDB) GetSeeds 

func (self *StateDB) GetSeeds() []keys.Uint512

func (*StateDB) GetState 

func (self *StateDB) GetState(addr common.Address, bhash common.Hash) common.Hash

func (*StateDB) GetTicketNonce 

func (self *StateDB) GetTicketNonce(addr common.Address) uint64

func (*StateDB) GetTokenRate 

func (self *StateDB) GetTokenRate(contractAddr common.Address, coinName string) (*big.Int, *big.Int)

func (*StateDB) GetZState 

func (self *StateDB) GetZState() *zstate.ZState

func (*StateDB) HasSuicided 

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

func (*StateDB) IncAndGetContrctNonce 

func (self *StateDB) IncAndGetContrctNonce() uint64

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) IsContract 

func (self *StateDB) IsContract(addr common.Address) bool

func (*StateDB) Logs 

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

func (*StateDB) OwnTicket 

func (self *StateDB) OwnTicket(contractAddr common.Address, categoryName string, value common.Hash) bool

func (*StateDB) Preimages 

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

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

func (*StateDB) Prepare 

func (self *StateDB) Prepare(thash, bhash 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) RawDump 

func (self *StateDB) RawDump() Dump

func (*StateDB) RegisterTicket 

func (self *StateDB) RegisterTicket(contractAddr common.Address, categoryName string) bool

func (*StateDB) RegisterToken 

func (self *StateDB) RegisterToken(contractAddr common.Address, coinName string) bool

register

func (*StateDB) RemoveTicket 

func (self *StateDB) RemoveTicket(contractAddr common.Address, categoryName string, value common.Hash) bool

func (*StateDB) Reset 

func (self *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 (self *StateDB) RevertToSnapshot(revid int)

RevertToSnapshot reverts all state changes made since the given revision.

func (*StateDB) SetAvgUsedGas 

func (self *StateDB) SetAvgUsedGas(number uint64, avgGsedGas *big.Int)

func (*StateDB) SetBalance 

func (self *StateDB) SetBalance(addr common.Address, coinName string, amount *big.Int)

func (*StateDB) SetCode 

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

func (*StateDB) SetSeeds 

func (self *StateDB) SetSeeds(seeds []keys.Uint512)

func (*StateDB) SetState 

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

func (*StateDB) SetTicketNonce 

func (self *StateDB) SetTicketNonce(addr common.Address, nonce uint64)

func (*StateDB) SetTokenRate 

func (self *StateDB) SetTokenRate(contractAddr common.Address, coinName string, tokens *big.Int, tas *big.Int) bool

func (*StateDB) Snapshot 

func (self *StateDB) Snapshot() int

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

func (*StateDB) StorageTrie 

func (self *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 (self *StateDB) SubBalance(addr common.Address, coinName string, amount *big.Int)

SubBalance subtracts amount from the account associated with addr.

func (*StateDB) Suicide 

func (self *StateDB) Suicide(addr common.Address, toAddr 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.

type StateDbPut 

type StateDbPut interface {
	Put(key, value []byte) error
}

type StateTri 

type StateTri struct {
	Tri   Trie
	Dbget serodb.Getter
	Dbput serodb.Putter
	// contains filtered or unexported fields
}

func (*StateTri) GetState 

func (self *StateTri) GetState(key *keys.Uint256) (ret keys.Uint256)

func (*StateTri) GlobalGetter 

func (self *StateTri) GlobalGetter() serodb.Getter

func (*StateTri) SetState 

func (self *StateTri) SetState(key *keys.Uint256, value *keys.Uint256)

func (*StateTri) TryGet 

func (self *StateTri) TryGet(key []byte) ([]byte, error)

func (*StateTri) TryGlobalGet 

func (self *StateTri) TryGlobalGet(key []byte) ([]byte, error)

func (*StateTri) TryGlobalPut 

func (self *StateTri) TryGlobalPut(key, value []byte) error

func (*StateTri) TryUpdate 

func (self *StateTri) TryUpdate(key, value []byte) error

type Storage 

type Storage map[common.Hash]common.Hash

func (Storage) Copy 

func (self Storage) Copy() Storage

func (Storage) String 

func (self Storage) String() (str string)

type Trie 

type Trie interface {
	TryGet(key []byte) ([]byte, error)
	TryUpdate(key, value []byte) error
	TryDelete(key []byte) error
	Commit(onleaf trie.LeafCallback) (common.Hash, error)
	Hash() common.Hash
	NodeIterator(startKey []byte) trie.NodeIterator
	GetKey([]byte) []byte // TODO(fjl): remove this when SecureTrie is removed
	Prove(key []byte, fromLevel uint, proofDb serodb.Putter) error
}

Trie is a Ethereum Merkle Trie.

Source Files

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