state

package
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 Go to latest Published: Oct 28, 2019 License: MIT Imports: 20 Imported by: 0

Documentation

Overview

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

Index

Constants

This section is empty.

Variables

View Source 
var MaxTrieCacheGen = uint16(120)

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

Functions

func NewStateSync 

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

NewStateSync create a new state trie download scheduler.

Types

type Account 

type Account struct {
	Nonce    uint64
	Balance  common.BalanceType
	Root     common.Hash // merkle root of the storage trie
	CodeHash []byte
}

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

type BtreeDietyStruct 

type BtreeDietyStruct struct {
	Key  uint32
	Data map[common.Hash][]byte
	Typ  string
}

type Code 

type Code []byte

func (Code) String 

func (self Code) String() string

type CodeData 

type CodeData struct {
	CodeHash []byte
	Code     []byte
}

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 mandb.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"`
	MatrixData map[string]string      `json:"matrixData"`
}

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 DumpDB 

type DumpDB struct {
	Root    common.Hash
	Account []DumpValue
	Matrix  []DumpValue
	//	MapAccount map[common.Address][]DumpValue
	MapAccount []MapAccountArr
	CodeDatas  []CodeData
}

Root [Account ...] [Matrix...] Account -> Root -> []DumpValue

func (*DumpDB) PrintAccountMsg 

func (dbDump *DumpDB) PrintAccountMsg()

type DumpValue 

type DumpValue struct {
	Key    []byte
	GetKey []byte
	Value  []byte
}

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) GetNonce 

func (ms *ManagedState) GetNonce(addr common.Address) uint64

GetNonce returns the canonical nonce for the managed or unmanaged account.

Because GetNonce mutates the DB, we must take a write lock.

func (*ManagedState) HasAccount 

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

HasAccount returns whether the given address is managed or not

func (*ManagedState) NewNonce 

func (ms *ManagedState) NewNonce(addr common.Address) uint64

NewNonce returns the new canonical nonce for the managed account

func (*ManagedState) RemoveNonce 

func (ms *ManagedState) RemoveNonce(addr common.Address, n uint64)

RemoveNonce removed the nonce from the managed state and all future pending nonces

func (*ManagedState) SetNonce 

func (ms *ManagedState) SetNonce(addr common.Address, nonce uint64)

SetNonce sets the new canonical nonce for the managed state

func (*ManagedState) SetState 

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

SetState sets the backing layer of the managed state

type MapAccountArr 

type MapAccountArr struct {
	Addr     common.Address
	DumpData []DumpValue
}

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 matrix 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) (*StateDB, error)

Create a new state from a given trie.

func (*StateDB) AddBalance 

func (self *StateDB) AddBalance(accountType uint32, addr common.Address, amount *big.Int)

AddBalance adds amount to the account associated with addr.

func (*StateDB) AddLog 

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

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) 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) CommitSaveTx 

func (self *StateDB) CommitSaveTx()

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)

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 Maner 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) DeleteMxData 

func (self *StateDB) DeleteMxData(hash common.Hash, val []byte)

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) ForEachStorage 

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

func (*StateDB) GetAllEntrustGasFrom 

func (self *StateDB) GetAllEntrustGasFrom(authFrom common.Address) []common.Address

根据授权人获取所有委托gas列表,(该方法用于取消委托时调用)

func (*StateDB) GetAllEntrustList 

func (self *StateDB) GetAllEntrustList(authFrom common.Address) []common.EntrustType

钱包调用显示

func (*StateDB) GetAllEntrustSignFrom 

func (self *StateDB) GetAllEntrustSignFrom(authFrom common.Address) []common.Address

根据授权人获取所有委托签名列表,(该方法用于取消委托时调用)

func (*StateDB) GetAuthFrom 

func (self *StateDB) GetAuthFrom(entrustFrom common.Address, height uint64) common.Address

根据委托人from和高度获取授权人的from,返回授权人地址(算法组调用,仅适用委托签名) A1

func (*StateDB) GetAuthStateByteArray 

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

func (*StateDB) GetBalance 

func (self *StateDB) GetBalance(addr common.Address) common.BalanceType

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

func (*StateDB) GetBalanceByType 

func (self *StateDB) GetBalanceByType(addr common.Address, accType uint32) *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) GetEntrustFrom 

func (self *StateDB) GetEntrustFrom(authFrom common.Address, height uint64) []common.Address

根据授权人from和高度获取委托人的from列表,返回委托人地址列表(算法组调用,仅适用委托签名) A2 s

func (*StateDB) GetEntrustFromByTime 

func (self *StateDB) GetEntrustFromByTime(authFrom common.Address, time uint64) []common.Address

func (*StateDB) GetEntrustStateByteArray 

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

func (*StateDB) GetGasAuthFrom 

func (self *StateDB) GetGasAuthFrom(entrustFrom common.Address, height uint64) common.Address

根据委托人from和高度获取授权人的from,返回授权人地址(内部调用,仅适用委托gas)

func (*StateDB) GetGasAuthFromByTime 

func (self *StateDB) GetGasAuthFromByTime(entrustFrom common.Address, time uint64) common.Address

根据委托人from和时间获取授权人的from,返回授权人地址(内部调用,仅适用委托gas)

func (*StateDB) GetIsEntrustByTime 

func (self *StateDB) GetIsEntrustByTime(entrustFrom common.Address, time uint64) bool

判断根据时间委托是否满足条件，用于执行按时间委托的交易(跑交易),此处time应该为header里的时间戳

func (*StateDB) GetLogs 

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

func (*StateDB) GetMatrixData 

func (self *StateDB) GetMatrixData(hash common.Hash) (val []byte)

func (*StateDB) GetNonce 

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

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) GetRefund 

func (self *StateDB) GetRefund() uint64

GetRefund returns the current value of the refund counter.

func (*StateDB) GetSaveTx 

func (self *StateDB) GetSaveTx(typ byte, key uint32, hashlist []common.Hash, isdel bool)

func (*StateDB) GetState 

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

func (*StateDB) GetStateByteArray 

func (self *StateDB) GetStateByteArray(a common.Address, b common.Hash) []byte

func (*StateDB) HasSuicided 

func (self *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) Logs 

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

func (*StateDB) MissTrieDebug 

func (self *StateDB) MissTrieDebug()

func (*StateDB) NewBTrie 

func (self *StateDB) NewBTrie(typ byte)

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) RawAccount 

func (self *StateDB) RawAccount(account common.Address) *DumpAccount

func (*StateDB) RawDump 

func (self *StateDB) RawDump() Dump

func (*StateDB) RawDump1 

func (self *StateDB) RawDump1(dbDump *DumpDB) Dump

func (*StateDB) RawDumpDB 

func (self *StateDB) RawDumpDB() DumpDB

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) SaveTx 

func (self *StateDB) SaveTx(typ byte, key uint32, data map[common.Hash][]byte)

func (*StateDB) SetAuthStateByteArray 

func (self *StateDB) SetAuthStateByteArray(addr common.Address, value []byte)

func (*StateDB) SetBalance 

func (self *StateDB) SetBalance(accountType uint32, addr common.Address, amount *big.Int)

func (*StateDB) SetCode 

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

func (*StateDB) SetEntrustStateByteArray 

func (self *StateDB) SetEntrustStateByteArray(addr common.Address, value []byte)

func (*StateDB) SetMatrixData 

func (self *StateDB) SetMatrixData(hash common.Hash, val []byte)

func (*StateDB) SetNonce 

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

func (*StateDB) SetState 

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

func (*StateDB) SetStateByteArray 

func (self *StateDB) SetStateByteArray(addr common.Address, key common.Hash, value []byte)

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(accountType uint32, addr common.Address, amount *big.Int)

SubBalance subtracts amount from the account associated with addr.

func (*StateDB) Suicide 

func (self *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) UpdateTxForBtree 

func (self *StateDB) UpdateTxForBtree(key uint32)

func (*StateDB) UpdateTxForBtreeBytime 

func (self *StateDB) UpdateTxForBtreeBytime(key uint32)

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 StorageByteArray 

type StorageByteArray map[common.Hash][]byte

func (StorageByteArray) Copy 

func (self StorageByteArray) Copy() StorageByteArray

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 mandb.Putter) error
}

Trie is a Matrix Merkle Trie.

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