hooks

package
v1.1.4 Latest Latest
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 Go to latest Published: Oct 16, 2020 License: GPL-3.0 Imports: 20 Imported by: 0

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Index

Constants

This section is empty.

Variables

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var ErrAddressLengthNotCorrect = errors.New("address length is not correct")

ErrAddressLengthNotCorrect signals that an account does not have the correct address

View Source 
var ErrEmptyCode = errors.New("empty code in provided smart contract holding account")

ErrEmptyCode signals that an account does not contain code

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var ErrNotImplemented = errors.New("not implemented")

ErrNotImplemented signals that a functionality can not be used as it is not implemented

View Source 
var ErrVMTypeLengthIsNotCorrect = errors.New("vm type length is not correct")

ErrVMTypeLengthIsNotCorrect signals that the vm type length is not correct

Functions

This section is empty.

Types

type ArgBlockChainHook 

type ArgBlockChainHook struct {
	Accounts         state.AccountsAdapter
	PubkeyConv       core.PubkeyConverter
	StorageService   dataRetriever.StorageService
	BlockChain       data.ChainHandler
	ShardCoordinator sharding.Coordinator
	Marshalizer      marshal.Marshalizer
	Uint64Converter  typeConverters.Uint64ByteSliceConverter
	BuiltInFunctions process.BuiltInFunctionContainer
}

ArgBlockChainHook represents the arguments structure for the blockchain hook

type BlockChainHookImpl 

type BlockChainHookImpl struct {
	// contains filtered or unexported fields
}

BlockChainHookImpl is a wrapper over AccountsAdapter that satisfy vmcommon.BlockchainHook interface

func NewBlockChainHookImpl 

func NewBlockChainHookImpl(
	args ArgBlockChainHook,
) (*BlockChainHookImpl, error)

NewBlockChainHookImpl creates a new BlockChainHookImpl instance

func (*BlockChainHookImpl) CurrentEpoch 

func (bh *BlockChainHookImpl) CurrentEpoch() uint32

CurrentEpoch returns the current epoch

func (*BlockChainHookImpl) CurrentNonce 

func (bh *BlockChainHookImpl) CurrentNonce() uint64

CurrentNonce returns the nonce from the current block

func (*BlockChainHookImpl) CurrentRandomSeed 

func (bh *BlockChainHookImpl) CurrentRandomSeed() []byte

CurrentRandomSeed returns the random seed from the current header

func (*BlockChainHookImpl) CurrentRound 

func (bh *BlockChainHookImpl) CurrentRound() uint64

CurrentRound returns the round from the current block

func (*BlockChainHookImpl) CurrentTimeStamp 

func (bh *BlockChainHookImpl) CurrentTimeStamp() uint64

CurrentTimeStamp return the timestamp from the current block

func (*BlockChainHookImpl) GetAllState added in v1.0.114 

func (bh *BlockChainHookImpl) GetAllState(address []byte) (map[string][]byte, error)

GetAllState returns the underlying state of a given account

func (*BlockChainHookImpl) GetBlockhash 

func (bh *BlockChainHookImpl) GetBlockhash(nonce uint64) ([]byte, error)

GetBlockhash returns the header hash for a requested nonce delta

func (*BlockChainHookImpl) GetBuiltInFunctions added in v1.0.103 

func (bh *BlockChainHookImpl) GetBuiltInFunctions() process.BuiltInFunctionContainer

GetBuiltInFunctions returns the built in functions container

func (*BlockChainHookImpl) GetBuiltinFunctionNames added in v1.0.104 

func (bh *BlockChainHookImpl) GetBuiltinFunctionNames() vmcommon.FunctionNames

GetBuiltinFunctionNames returns the built in function names

func (*BlockChainHookImpl) GetShardOfAddress added in v1.0.133 

func (bh *BlockChainHookImpl) GetShardOfAddress(address []byte) uint32

GetShardOfAddress is the hook that returns the shard of a given address

func (*BlockChainHookImpl) GetStateRootHash 

func (bh *BlockChainHookImpl) GetStateRootHash() []byte

GetStateRootHash returns the state root hash from the last committed block

func (*BlockChainHookImpl) GetStorageData 

func (bh *BlockChainHookImpl) GetStorageData(accountAddress []byte, index []byte) ([]byte, error)

GetStorageData returns the storage value of a variable held in account's data trie

func (*BlockChainHookImpl) GetUserAccount added in v1.0.133 

func (bh *BlockChainHookImpl) GetUserAccount(address []byte) (vmcommon.UserAccountHandler, error)

GetUserAccount returns the balance of a shard account

func (*BlockChainHookImpl) IsInterfaceNil 

func (bh *BlockChainHookImpl) IsInterfaceNil() bool

IsInterfaceNil returns true if there is no value under the interface

func (*BlockChainHookImpl) IsPayable added in v1.0.147 

func (bh *BlockChainHookImpl) IsPayable(address []byte) (bool, error)

IsPayable checks whether the provided address can receive ERD or not

func (*BlockChainHookImpl) IsSmartContract added in v1.0.133 

func (bh *BlockChainHookImpl) IsSmartContract(address []byte) bool

IsSmartContract returns whether the address points to a smart contract

func (*BlockChainHookImpl) LastEpoch 

func (bh *BlockChainHookImpl) LastEpoch() uint32

LastEpoch returns the epoch from the last committed block

func (*BlockChainHookImpl) LastNonce 

func (bh *BlockChainHookImpl) LastNonce() uint64

LastNonce returns the nonce from from the last committed block

func (*BlockChainHookImpl) LastRandomSeed 

func (bh *BlockChainHookImpl) LastRandomSeed() []byte

LastRandomSeed returns the random seed from the last committed block

func (*BlockChainHookImpl) LastRound 

func (bh *BlockChainHookImpl) LastRound() uint64

LastRound returns the round from the last committed block

func (*BlockChainHookImpl) LastTimeStamp 

func (bh *BlockChainHookImpl) LastTimeStamp() uint64

LastTimeStamp returns the timeStamp from the last committed block

func (*BlockChainHookImpl) NewAddress 

func (bh *BlockChainHookImpl) NewAddress(creatorAddress []byte, creatorNonce uint64, vmType []byte) ([]byte, error)

NewAddress is a hook which creates a new smart contract address from the creators address and nonce The address is created by applied keccak256 on the appended value off creator address and nonce Prefix mask is applied for first 8 bytes 0, and for bytes 9-10 - VM type Suffix mask is applied - last 2 bytes are for the shard ID - mask is applied as suffix mask

func (*BlockChainHookImpl) ProcessBuiltInFunction added in v1.0.103 

func (bh *BlockChainHookImpl) ProcessBuiltInFunction(input *vmcommon.ContractCallInput) (*vmcommon.VMOutput, error)

ProcessBuiltInFunction is the hook through which a smart contract can execute a built in function

func (*BlockChainHookImpl) SetCurrentHeader 

func (bh *BlockChainHookImpl) SetCurrentHeader(hdr data.HeaderHandler)

SetCurrentHeader sets current header to be used by smart contracts

type VMCryptoHook 

type VMCryptoHook struct {
}

VMCryptoHook is a wrapper used in vm implementation

func NewVMCryptoHook 

func NewVMCryptoHook() *VMCryptoHook

NewVMCryptoHook creates a new instance of a vm crypto hook

func (*VMCryptoHook) Ecrecover 

func (vmch *VMCryptoHook) Ecrecover(_ []byte, _ []byte, _ []byte, _ []byte) ([]byte, error)

Ecrecover calculates the corresponding Ethereum address for the public key which created the given signature https://ewasm.readthedocs.io/en/mkdocs/system_contracts/

func (*VMCryptoHook) Keccak256 

func (vmch *VMCryptoHook) Keccak256(data []byte) ([]byte, error)

Keccak256 returns a keccak 256 hash of the input string. Should return in hex format.

func (*VMCryptoHook) Ripemd160 

func (vmch *VMCryptoHook) Ripemd160(data []byte) ([]byte, error)

Ripemd160 is a legacy hash and should not be used for new applications

func (*VMCryptoHook) Sha256 

func (vmch *VMCryptoHook) Sha256(data []byte) ([]byte, error)

Sha256 returns a sha 256 hash of the input string. Should return in hex format.

Source Files

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