stateroot

Documentation

Index

• Variables
• type Module
  • func NewModule(cfg config.Blockchain, verif VerifierFunc, log *zap.Logger, ...) *Module
  • func (s *Module) AddMPTBatch(index uint32, b mpt.Batch, cache *storage.MemCachedStore) (*mpt.Trie, *state.MPTRoot, error)
  • func (s *Module) AddStateRoot(sr *state.MPTRoot) error
  • func (s *Module) CleanStorage() error
  • func (s *Module) CurrentLocalHeight() uint32
  • func (s *Module) CurrentLocalStateRoot() util.Uint256
  • func (s *Module) CurrentValidatedHeight() uint32
  • func (s *Module) FindStates(root util.Uint256, prefix, start []byte, max int) ([]storage.KeyValue, error)
  • func (s *Module) GC(index uint32, store storage.Store) time.Duration
  • func (s *Module) GetLatestStateHeight(root util.Uint256) (uint32, error)
  • func (s *Module) GetState(root util.Uint256, key []byte) ([]byte, error)
  • func (s *Module) GetStateProof(root util.Uint256, key []byte) ([][]byte, error)
  • func (s *Module) GetStateRoot(height uint32) (*state.MPTRoot, error)
  • func (s *Module) GetStateValidators(height uint32) keys.PublicKeys
  • func (s *Module) Init(height uint32) error
  • func (s *Module) JumpToState(sr *state.MPTRoot)
  • func (s *Module) ResetState(height uint32, cache *storage.MemCachedStore) error
  • func (s *Module) SeekStates(root util.Uint256, prefix []byte, cont func(k, v []byte) bool)
  • func (s *Module) SetUpdateValidatorsCallback(f func(uint32, keys.PublicKeys))
  • func (s *Module) UpdateCurrentLocal(mpt *mpt.Trie, sr *state.MPTRoot)
  • func (s *Module) UpdateStateValidators(height uint32, pubs keys.PublicKeys)
  • func (s *Module) VerifyStateRoot(r *state.MPTRoot) error
• type VerifierFunc

Variables

var (
	// ErrStateMismatch means that local state root doesn't match the one
	// signed by state validators.
	ErrStateMismatch = errors.New("stateroot mismatch")
)

Types

type Module

type Module struct {
	Store *storage.MemCachedStore
	// contains filtered or unexported fields
}

Module represents module for local processing of state roots.

func NewModule

func NewModule(cfg config.Blockchain, verif VerifierFunc, log *zap.Logger, s *storage.MemCachedStore) *Module

NewModule returns new instance of stateroot module.

func (*Module) AddMPTBatch

func (s *Module) AddMPTBatch(index uint32, b mpt.Batch, cache *storage.MemCachedStore) (*mpt.Trie, *state.MPTRoot, error)

AddMPTBatch updates using provided batch.

func (*Module) AddStateRoot

func (s *Module) AddStateRoot(sr *state.MPTRoot) error

AddStateRoot adds validated state root provided by network.

func (*Module) CleanStorage

func (s *Module) CleanStorage() error

CleanStorage removes all MPT-related data from the storage (MPT nodes, validated stateroots) except local stateroot for the current height and GC flag. This method is aimed to clean outdated MPT data before state sync process can be started. Note: this method is aimed to be called for genesis block only, an error is returned otherwise.

func (*Module) CurrentLocalHeight

func (s *Module) CurrentLocalHeight() uint32

CurrentLocalHeight returns height of the local state root.

func (*Module) CurrentLocalStateRoot

func (s *Module) CurrentLocalStateRoot() util.Uint256

CurrentLocalStateRoot returns hash of the local state root.

func (*Module) CurrentValidatedHeight

func (s *Module) CurrentValidatedHeight() uint32

CurrentValidatedHeight returns current state root validated height.

func (*Module) FindStates

func (s *Module) FindStates(root util.Uint256, prefix, start []byte, max int) ([]storage.KeyValue, error)

FindStates returns a set of key-value pairs with keys matching the prefix starting from the `prefix`+`start` path from MPT with the specified root. `max` is the maximum number of elements to be returned. If nil `start` is specified, then the item with the key equal to the prefix is included into the result; if empty `start` is specified, then the item with the key equal to the prefix is not included into the result. In case there are no results (prefix is unused, start is after the last available element) mpt.ErrNotFound is returned.

func (*Module) GC

func (s *Module) GC(index uint32, store storage.Store) time.Duration

GC performs garbage collection.

func (*Module) GetLatestStateHeight

func (s *Module) GetLatestStateHeight(root util.Uint256) (uint32, error)

GetLatestStateHeight returns the latest blockchain height by the given stateroot.

func (*Module) GetState

func (s *Module) GetState(root util.Uint256, key []byte) ([]byte, error)

GetState returns value at the specified key fom the MPT with the specified root.

func (*Module) GetStateProof

func (s *Module) GetStateProof(root util.Uint256, key []byte) ([][]byte, error)

GetStateProof returns proof of having key in the MPT with the specified root.

func (*Module) GetStateRoot

func (s *Module) GetStateRoot(height uint32) (*state.MPTRoot, error)

GetStateRoot returns state root for a given height.

func (*Module) GetStateValidators

func (s *Module) GetStateValidators(height uint32) keys.PublicKeys

GetStateValidators returns current state validators.

func (*Module) Init

func (s *Module) Init(height uint32) error

Init initializes state root module at the given height.

func (*Module) JumpToState

func (s *Module) JumpToState(sr *state.MPTRoot)

JumpToState performs jump to the state specified by given stateroot index.

func (*Module) ResetState

func (s *Module) ResetState(height uint32, cache *storage.MemCachedStore) error

ResetState resets MPT state to the given height.

func (*Module) SeekStates

func (s *Module) SeekStates(root util.Uint256, prefix []byte, cont func(k, v []byte) bool)

SeekStates traverses over contract storage with the state based on the specified root. `prefix` is expected to consist of contract ID and the desired storage items prefix. `cont` is called for every matching key-value pair; the resulting key does not include contract ID and the desired storage item prefix (they are stripped to match the Blockchain's SeekStorage behaviour. The result includes item with the key that equals to the `prefix` (if such item is found in the storage). Traversal process is stopped when `false` is returned from `cont`.

func (*Module) SetUpdateValidatorsCallback

func (s *Module) SetUpdateValidatorsCallback(f func(uint32, keys.PublicKeys))

SetUpdateValidatorsCallback sets callback for sending signed root.

func (*Module) UpdateCurrentLocal

func (s *Module) UpdateCurrentLocal(mpt *mpt.Trie, sr *state.MPTRoot)

UpdateCurrentLocal updates local caches using provided state root.

func (*Module) UpdateStateValidators

func (s *Module) UpdateStateValidators(height uint32, pubs keys.PublicKeys)

UpdateStateValidators updates list of state validator keys.

func (*Module) VerifyStateRoot

func (s *Module) VerifyStateRoot(r *state.MPTRoot) error

VerifyStateRoot checks if state root is valid.

type VerifierFunc

type VerifierFunc func(util.Uint160, hash.Hashable, *transaction.Witness, int64) (int64, error)

VerifierFunc is a function that allows to check witness of account for Hashable item with GAS limit.