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Published: Jan 25, 2016 License: GPL-3.0 Imports: 14 Imported by: 24



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



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var StartingNonce uint64

The starting nonce determines the default nonce when new accounts are being created.


This section is empty.


type Account

type Account struct {
	Balance  string            `json:"balance"`
	Nonce    uint64            `json:"nonce"`
	Root     string            `json:"root"`
	CodeHash string            `json:"codeHash"`
	Storage  map[string]string `json:"storage"`

type Code

type Code []byte

func (Code) String

func (self Code) String() string

type ManagedState

type ManagedState struct {
	// 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 unmanged account

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 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 ethdb.Database) (*StateDB, error)

Create a new state from a given trie

func (*StateDB) AddBalance

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

func (*StateDB) AddLog

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

func (*StateDB) AddRefund

func (self *StateDB) AddRefund(gas *big.Int)

func (*StateDB) Commit

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

Commit commits all state changes to the database.

func (*StateDB) CommitBatch

func (s *StateDB) CommitBatch() (root common.Hash, batch ethdb.Batch)

CommitBatch commits all state changes to a write batch but does not execute the batch. It is used to validate state changes against the root hash stored in a block.

func (*StateDB) Copy

func (self *StateDB) Copy() *StateDB

func (*StateDB) CreateAccount

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

func (*StateDB) CreateOutputForDiff

func (self *StateDB) CreateOutputForDiff()

Debug stuff

func (*StateDB) CreateStateObject

func (self *StateDB) CreateStateObject(addr common.Address) *StateObject

Creates creates a new state object and takes ownership. This is different from "NewStateObject"

func (*StateDB) Delete

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

func (*StateDB) DeleteStateObject

func (self *StateDB) DeleteStateObject(stateObject *StateObject)

Delete the given state object and delete it from the state trie

func (*StateDB) Dump

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

func (*StateDB) Exist

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

func (*StateDB) GetAccount

func (self *StateDB) GetAccount(addr common.Address) vm.Account

func (*StateDB) GetBalance

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

func (self *StateDB) GetLogs(hash common.Hash) vm.Logs

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() *big.Int

func (*StateDB) GetState

func (self *StateDB) GetState(a common.Address, b common.Hash) common.Hash

func (*StateDB) GetStateObject

func (self *StateDB) GetStateObject(addr common.Address) (stateObject *StateObject)

Retrieve a state object given my the address. Nil if not found

func (*StateDB) HasAccount

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

func (*StateDB) IntermediateRoot

func (s *StateDB) IntermediateRoot() 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) IsDeleted

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

func (*StateDB) Logs

func (self *StateDB) Logs() vm.Logs

func (*StateDB) RawDump

func (self *StateDB) RawDump() World

func (*StateDB) Refunds

func (self *StateDB) Refunds() *big.Int

func (*StateDB) Set

func (self *StateDB) Set(state *StateDB)

func (*StateDB) SetCode

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

func (*StateDB) SetNonce

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

func (*StateDB) SetState

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

func (*StateDB) SetStateObject

func (self *StateDB) SetStateObject(object *StateObject)

func (*StateDB) StartRecord

func (self *StateDB) StartRecord(thash, bhash common.Hash, ti int)

func (*StateDB) UpdateStateObject

func (self *StateDB) UpdateStateObject(stateObject *StateObject)

Update the given state object and apply it to state trie

type StateObject

type StateObject struct {
	// contains filtered or unexported fields

func DecodeObject

func DecodeObject(address common.Address, db trie.Database, data []byte) (*StateObject, error)

DecodeObject decodes an RLP-encoded state object.

func NewStateObject

func NewStateObject(address common.Address, db trie.Database) *StateObject

func (*StateObject) AddBalance

func (c *StateObject) AddBalance(amount *big.Int)

func (*StateObject) Address

func (c *StateObject) Address() common.Address

Returns the address of the contract/account

func (*StateObject) Balance

func (self *StateObject) Balance() *big.Int

func (*StateObject) Code

func (self *StateObject) Code() []byte

func (*StateObject) Copy

func (self *StateObject) Copy() *StateObject

func (*StateObject) CreateOutputForDiff

func (self *StateObject) CreateOutputForDiff()

Debug stuff

func (*StateObject) EachStorage

func (self *StateObject) EachStorage(cb func(key, value []byte))

func (*StateObject) EncodeRLP

func (c *StateObject) EncodeRLP(w io.Writer) error

EncodeRLP implements rlp.Encoder.

func (*StateObject) GetState

func (self *StateObject) GetState(key common.Hash) common.Hash

func (*StateObject) MarkForDeletion

func (self *StateObject) MarkForDeletion()

func (*StateObject) Nonce

func (self *StateObject) Nonce() uint64

func (*StateObject) ReturnGas

func (c *StateObject) ReturnGas(gas, price *big.Int)

Return the gas back to the origin. Used by the Virtual machine or Closures

func (*StateObject) Root

func (self *StateObject) Root() []byte

func (*StateObject) SetBalance

func (c *StateObject) SetBalance(amount *big.Int)

func (*StateObject) SetCode

func (self *StateObject) SetCode(code []byte)

func (*StateObject) SetNonce

func (self *StateObject) SetNonce(nonce uint64)

func (*StateObject) SetState

func (self *StateObject) SetState(k, value common.Hash)

func (*StateObject) St

func (c *StateObject) St() Storage

func (*StateObject) Storage

func (self *StateObject) Storage() Storage

func (*StateObject) SubBalance

func (c *StateObject) SubBalance(amount *big.Int)

func (*StateObject) Trie

func (self *StateObject) Trie() *trie.SecureTrie

func (*StateObject) Update

func (self *StateObject) Update()

Update updates the current cached storage to the trie

type StateSync

type StateSync trie.TrieSync

StateSync is the main state synchronisation scheduler, which provides yet the unknown state hashes to retrieve, accepts node data associated with said hashes and reconstructs the state database step by step until all is done.

func NewStateSync

func NewStateSync(root common.Hash, database ethdb.Database) *StateSync

NewStateSync create a new state trie download scheduler.

func (*StateSync) Missing

func (s *StateSync) Missing(max int) []common.Hash

Missing retrieves the known missing nodes from the state trie for retrieval.

func (*StateSync) Pending

func (s *StateSync) Pending() int

Pending returns the number of state entries currently pending for download.

func (*StateSync) Process

func (s *StateSync) Process(list []trie.SyncResult) (int, error)

Process injects a batch of retrieved trie nodes data.

type Storage

type Storage map[string]common.Hash

func (Storage) Copy

func (self Storage) Copy() Storage

func (Storage) String

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

type World

type World struct {
	Root     string             `json:"root"`
	Accounts map[string]Account `json:"accounts"`

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