state

package
v1.4.10 Latest Latest
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 Go to latest Published: Jul 16, 2016 License: GPL-3.0 Imports: 14 Imported by: 0

Documentation

Overview

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

Index

Constants

This section is empty.

Variables

View Source 
var StartingNonce uint64

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

Functions

This section is empty.

Types

type Account 

type Account 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 Code 

type Code []byte

func (Code) String 

func (self Code) String() string

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

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 NodeIterator added in v1.4.0 

type NodeIterator struct {
	Hash   common.Hash // Hash of the current entry being iterated (nil if not standalone)
	Entry  interface{} // Current state entry being iterated (internal representation)
	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 added in v1.4.0 

func NewNodeIterator(state *StateDB) *NodeIterator

NewNodeIterator creates an post-order state node iterator.

func (*NodeIterator) Next added in v1.4.0 

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 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 added in v1.3.1 

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

func (*StateDB) Commit added in v1.3.1 

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

Commit commits all state changes to the database.

func (*StateDB) CommitBatch added in v1.3.1 

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 added in v1.3.1 

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) DeleteSuicides added in v1.4.7 

func (s *StateDB) DeleteSuicides()

DeleteSuicides flags the suicided objects for deletion so that it won't be referenced again when called / queried up on.

DeleteSuicides should not be used for consensus related updates under any circumstances.

func (*StateDB) Dump 

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

func (*StateDB) Exist added in v1.3.1 

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

func (*StateDB) GetAccount added in v1.3.1 

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 added in v1.3.1 

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 added in v1.3.1 

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) Reset 

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

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

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 added in v1.4.0 

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) EncodeRLP added in v1.4.0 

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

EncodeRLP implements rlp.Encoder.

func (*StateObject) ForEachStorage added in v1.4.0 

func (self *StateObject) ForEachStorage(cb func(key, value common.Hash) bool)

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(key, 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

func (*StateObject) Value added in v1.3.4 

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

Never called, but must be present to allow StateObject to be used as a vm.Account interface that also satisfies the vm.ContractRef interface. Interfaces are awesome.

type StateSync added in v1.3.1 

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 added in v1.3.1 

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

NewStateSync create a new state trie download scheduler.

func (*StateSync) Missing added in v1.3.1 

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

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

func (*StateSync) Pending added in v1.3.1 

func (s *StateSync) Pending() int

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

func (*StateSync) Process added in v1.3.1 

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

Process injects a batch of retrieved trie nodes data.

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 World 

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

Source Files

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