core

package
v1.10.56 Latest Latest
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 Go to latest Published: May 15, 2024 License: GPL-3.0, GPL-3.0 Imports: 42 Imported by: 0

Documentation

Overview

Package core implements the Cortex consensus protocol.

Index

Constants

View Source 
const (
	TriesInMemory = 128

	// BlockChainVersion ensures that an incompatible database forces a resync from scratch.
	//
	// Changelog:
	//
	// - Version 4
	//   The following incompatible database changes were added:
	//   * the `BlockNumber`, `TxHash`, `TxIndex`, `BlockHash` and `Index` fields of log are deleted
	//   * the `Bloom` field of receipt is deleted
	//   * the `BlockIndex` and `TxIndex` fields of txlookup are deleted
	// - Version 5
	//  The following incompatible database changes were added:
	//    * the `TxHash`, `GasCost`, and `ContractAddress` fields are no longer stored for a receipt
	//    * the `TxHash`, `GasCost`, and `ContractAddress` fields are computed by looking up the
	//      receipts' corresponding block
	// - Version 6
	//  The following incompatible database changes were added:
	//    * Transaction lookup information stores the corresponding block number instead of block hash
	// - Version 7
	//  The following incompatible database changes were added:
	//    * Use freezer as the ancient database to maintain all ancient data
	// - Version 8
	//  The following incompatible database changes were added:
	//    * New scheme for contract code in order to separate the codes and trie nodes
	BlockChainVersion uint64 = 8
)

Variables

View Source 
var (
	// ErrKnownBlock is returned when a block to import is already known locally.
	ErrKnownBlock = errors.New("block already known")

	// ErrGasLimitReached is returned by the gas pool if the amount of gas required
	// by a transaction is higher than what's left in the block.
	ErrGasLimitReached     = errors.New("gas limit reached")
	ErrQuotaLimitReached   = errors.New("quota limit reached")
	ErrQuotaUpLimitReached = errors.New("quota uint64 upper limit reached")
	ErrUnhandleTx          = errors.New("current unhandle tx encounter")
	// ErrBannedHash is returned if a block to import is on the banned list.
	ErrBannedHash = errors.New("banned hash")

	// ErrNoGenesis is returned when there is no Genesis Block.
	ErrNoGenesis = errors.New("genesis not found in chain")

	// ErrBlacklistedHash is returned if a block to import is on the blacklist.
	ErrBlacklistedHash = errors.New("blacklisted hash")

	// ErrNonceMax is returned if the nonce of a transaction sender account has
	// maximum allowed value and would become invalid if incremented.
	ErrNonceMax = errors.New("nonce has max value")

	// ErrNonceTooHigh is returned if the nonce of a transaction is higher than the
	// next one expected based on the local chain.
	ErrNonceTooHigh = errors.New("nonce too high")
	// ErrNonceTooLow is returned if the nonce of a transaction is lower than the
	// one present in the local chain.
	ErrNonceTooLow = errors.New("nonce too low")
	// ErrInvalidSender is returned if the transaction contains an invalid signature.
	ErrInvalidSender = errors.New("invalid sender")

	// ErrInsufficientFunds is returned if the total cost of executing a transaction
	// is higher than the balance of the user's account.
	ErrInsufficientFunds = errors.New("insufficient funds for gas * price + value")

	// ErrIntrinsicGas is returned if the transaction is specified to use less gas
	// than required to start the invocation.
	ErrIntrinsicGas = errors.New("intrinsic gas too low")

	//ErrMetaInfoNotMature     = errors.New("cvm: errMetaInfoNotMature")
	ErrInsufficientFundsForTransfer = errors.New("insufficient funds for transfer")
)
View Source 
var BadHashes = map[common.Hash]bool{}

BadHashes represent a set of manually tracked bad hashes (usually hard forks)

View Source 
var SenderCacher = newTxSenderCacher(runtime.NumCPU())

senderCacher is a concurrent transaction sender recoverer anc cacher.

Functions

func ApplyTransaction 

func ApplyTransaction(config *params.ChainConfig, bc ChainContext, author *common.Address, gp *GasPool, qp *QuotaPool, statedb *state.StateDB, header *types.Header, tx *types.Transaction, usedGas *uint64, cfg vm.Config) (*types.Receipt, error)

ApplyTransaction attempts to apply a transaction to the given state database and uses the input parameters for its environment. It returns the receipt for the transaction, gas used and an error if the transaction failed, indicating the block was invalid.

func CalcGasLimit 

func CalcGasLimit(parent *types.Block, gasFloor, gasCeil uint64) uint64

CalcGasLimit computes the gas limit of the next block after parent. It aims to keep the baseline gas above the provided floor, and increase it towards the ceil if the blocks are full. If the ceil is exceeded, it will always decrease the gas allowance.

func CanTransfer 

func CanTransfer(db vm.StateDB, addr common.Address, amount *big.Int) bool

CanTransfer checks whether there are enough funds in the address' account to make a transfer. This does not take the necessary gas in to account to make the transfer valid.

func GenerateChain 

func GenerateChain(config *params.ChainConfig, parent *types.Block, engine consensus.Engine, db ctxcdb.Database, n int, gen func(int, *BlockGen)) ([]*types.Block, []types.Receipts)

GenerateChain creates a chain of n blocks. The first block's parent will be the provided parent. db is used to store intermediate states and should contain the parent's state trie.

The generator function is called with a new block generator for every block. Any transactions and uncles added to the generator become part of the block. If gen is nil, the blocks will be empty and their coinbase will be the zero address.

Blocks created by GenerateChain do not contain valid proof of work values. Inserting them into BlockChain requires use of FakePow or a similar non-validating proof of work implementation.

func GenesisBlockForTesting 

func GenesisBlockForTesting(db ctxcdb.Database, addr common.Address, balance *big.Int) *types.Block

GenesisBlockForTesting creates and writes a block in which addr has the given wei balance.

func GetHashFn 

func GetHashFn(ref *types.Header, chain ChainContext) func(n uint64) common.Hash

GetHashFn returns a GetHashFunc which retrieves header hashes by number

func IntrinsicGas 

func IntrinsicGas(data []byte, contractCreation, upload, isHomestead, isEIP2028 bool) (uint64, error)

IntrinsicGas computes the 'intrinsic gas' for a message with the given data.

func NewCVMBlockContext added in v1.10.13 

func NewCVMBlockContext(header *types.Header, chain ChainContext, author *common.Address) vm.BlockContext

NewCVMContext creates a new context for use in the CVM.

func NewCVMTxContext added in v1.10.13 

func NewCVMTxContext(msg *Message) vm.TxContext

NewCVMTxContext creates a new transaction context for a single transaction.

func SetupGenesisBlock 

func SetupGenesisBlock(db ctxcdb.Database, genesis *Genesis) (*params.ChainConfig, common.Hash, error)

SetupGenesisBlock writes or updates the genesis block in db. The block that will be used is: 

                     genesis == nil       genesis != nil
                  +------------------------------------------
db has no genesis |  main-net default  |  genesis
db has genesis    |  from DB           |  genesis (if compatible)

The stored chain configuration will be updated if it is compatible (i.e. does not specify a fork block below the local head block). In case of a conflict, the error is a *params.ConfigCompatError and the new, unwritten config is returned.

The returned chain configuration is never nil.

func Transfer 

func Transfer(db vm.StateDB, sender, recipient common.Address, amount *big.Int)

Transfer subtracts amount from sender and adds amount to recipient using the given Db

Types

type BlockChain 

type BlockChain struct {
	Viper bool
	// contains filtered or unexported fields
}

BlockChain represents the canonical chain given a database with a genesis block. The Blockchain manages chain imports, reverts, chain reorganisations.

Importing blocks in to the block chain happens according to the set of rules defined by the two stage Validator. Processing of blocks is done using the Processor which processes the included transaction. The validation of the state is done in the second part of the Validator. Failing results in aborting of the import.

The BlockChain also helps in returning blocks from **any** chain included in the database as well as blocks that represents the canonical chain. It's important to note that GetBlock can return any block and does not need to be included in the canonical one where as GetBlockByNumber always represents the canonical chain.

func NewBlockChain 

func NewBlockChain(db ctxcdb.Database, cacheConfig *CacheConfig, chainConfig *params.ChainConfig, engine consensus.Engine, vmConfig vm.Config, shouldPreserve func(block *types.Block) bool, txLookupLimit *uint64) (*BlockChain, error)

NewBlockChain returns a fully initialised block chain using information available in the database. It initialises the default Cortex Validator and Processor.

func (*BlockChain) Config 

func (bc *BlockChain) Config() *params.ChainConfig

Config retrieves the chain's fork configuration.

func (*BlockChain) ContractCodeWithPrefix added in v1.10.11 

func (bc *BlockChain) ContractCodeWithPrefix(hash common.Hash) ([]byte, error)

ContractCodeWithPrefix retrieves a blob of data associated with a contract hash either from ephemeral in-memory cache, or from persistent storage.

If the code doesn't exist in the in-memory cache, check the storage with new code scheme.

func (*BlockChain) CurrentBlock 

func (bc *BlockChain) CurrentBlock() *types.Block

CurrentBlock retrieves the current head block of the canonical chain. The block is retrieved from the blockchain's internal cache.

func (*BlockChain) CurrentFastBlock 

func (bc *BlockChain) CurrentFastBlock() *types.Block

CurrentFastBlock retrieves the current fast-sync head block of the canonical chain. The block is retrieved from the blockchain's internal cache.

func (*BlockChain) CurrentFinalizedBlock added in v1.10.31 

func (bc *BlockChain) CurrentFinalizedBlock() *types.Block

CurrentFinalizedBlock retrieves the current finalized block of the canonical chain. The block is retrieved from the blockchain's internal cache.

func (*BlockChain) CurrentHeader 

func (bc *BlockChain) CurrentHeader() *types.Header

CurrentHeader retrieves the current head header of the canonical chain. The header is retrieved from the HeaderChain's internal cache.

func (*BlockChain) CurrentSafeBlock added in v1.10.31 

func (bc *BlockChain) CurrentSafeBlock() *types.Block

CurrentSafeBlock retrieves the current safe block of the canonical chain. The block is retrieved from the blockchain's internal cache.

func (*BlockChain) Engine 

func (bc *BlockChain) Engine() consensus.Engine

Engine retrieves the blockchain's consensus engine.

func (*BlockChain) Export 

func (bc *BlockChain) Export(w io.Writer) error

Export writes the active chain to the given writer.

func (*BlockChain) ExportN 

func (bc *BlockChain) ExportN(w io.Writer, first uint64, last uint64) error

ExportN writes a subset of the active chain to the given writer.

func (*BlockChain) FastSyncCommitHead 

func (bc *BlockChain) FastSyncCommitHead(hash common.Hash) error

FastSyncCommitHead sets the current head block to the one defined by the hash irrelevant what the chain contents were prior.

func (*BlockChain) GasLimit 

func (bc *BlockChain) GasLimit() uint64

GasLimit returns the gas limit of the current HEAD block.

func (*BlockChain) Genesis 

func (bc *BlockChain) Genesis() *types.Block

Genesis retrieves the chain's genesis block.

func (*BlockChain) GetAncestor 

func (bc *BlockChain) GetAncestor(hash common.Hash, number, ancestor uint64, maxNonCanonical *uint64) (common.Hash, uint64)

GetAncestor retrieves the Nth ancestor of a given block. It assumes that either the given block or a close ancestor of it is canonical. maxNonCanonical points to a downwards counter limiting the number of blocks to be individually checked before we reach the canonical chain.

Note: ancestor == 0 returns the same block, 1 returns its parent and so on.

func (*BlockChain) GetBlock 

func (bc *BlockChain) GetBlock(hash common.Hash, number uint64) *types.Block

GetBlock retrieves a block from the database by hash and number, caching it if found.

func (*BlockChain) GetBlockByHash 

func (bc *BlockChain) GetBlockByHash(hash common.Hash) *types.Block

GetBlockByHash retrieves a block from the database by hash, caching it if found.

func (*BlockChain) GetBlockByNumber 

func (bc *BlockChain) GetBlockByNumber(number uint64) *types.Block

GetBlockByNumber retrieves a block from the database by number, caching it (associated with its hash) if found.

func (*BlockChain) GetBlocksFromHash 

func (bc *BlockChain) GetBlocksFromHash(hash common.Hash, n int) (blocks []*types.Block)

GetBlocksFromHash returns the block corresponding to hash and up to n-1 ancestors. [deprecated by eth/62]

func (*BlockChain) GetBody 

func (bc *BlockChain) GetBody(hash common.Hash) *types.Body

GetBody retrieves a block body (transactions and uncles) from the database by hash, caching it if found.

func (*BlockChain) GetBodyRLP 

func (bc *BlockChain) GetBodyRLP(hash common.Hash) rlp.RawValue

GetBodyRLP retrieves a block body in RLP encoding from the database by hash, caching it if found.

func (*BlockChain) GetCanonicalHash added in v1.9.51 

func (bc *BlockChain) GetCanonicalHash(number uint64) common.Hash

GetCanonicalHash returns the canonical hash for a given block number

func (*BlockChain) GetHeader 

func (bc *BlockChain) GetHeader(hash common.Hash, number uint64) *types.Header

GetHeader retrieves a block header from the database by hash and number, caching it if found.

func (*BlockChain) GetHeaderByHash 

func (bc *BlockChain) GetHeaderByHash(hash common.Hash) *types.Header

GetHeaderByHash retrieves a block header from the database by hash, caching it if found.

func (*BlockChain) GetHeaderByNumber 

func (bc *BlockChain) GetHeaderByNumber(number uint64) *types.Header

GetHeaderByNumber retrieves a block header from the database by number, caching it (associated with its hash) if found.

func (*BlockChain) GetHeadersFrom added in v1.10.30 

func (bc *BlockChain) GetHeadersFrom(number, count uint64) []rlp.RawValue

GetHeadersFrom returns a contiguous segment of headers, in rlp-form, going backwards from the given number.

func (*BlockChain) GetReceiptsByHash 

func (bc *BlockChain) GetReceiptsByHash(hash common.Hash) types.Receipts

GetReceiptsByHash retrieves the receipts for all transactions in a given block.

func (*BlockChain) GetTd 

func (bc *BlockChain) GetTd(hash common.Hash, number uint64) *big.Int

GetTd retrieves a block's total difficulty in the canonical chain from the database by hash and number, caching it if found.

func (*BlockChain) GetTdByHash 

func (bc *BlockChain) GetTdByHash(hash common.Hash) *big.Int

GetTdByHash retrieves a block's total difficulty in the canonical chain from the database by hash, caching it if found.

func (*BlockChain) GetTransactionLookup added in v1.9.51 

func (bc *BlockChain) GetTransactionLookup(hash common.Hash) (*rawdb.LegacyTxLookupEntry, *types.Transaction, error)

GetTransactionLookup retrieves the lookup along with the transaction itself associate with the given transaction hash.

An error will be returned if the transaction is not found, and background indexing for transactions is still in progress. The transaction might be reachable shortly once it's indexed.

A null will be returned in the transaction is not found and background transaction indexing is already finished. The transaction is not existent from the node's perspective

func (*BlockChain) GetUnclesInChain 

func (bc *BlockChain) GetUnclesInChain(block *types.Block, length int) []*types.Header

GetUnclesInChain retrieves all the uncles from a given block backwards until a specific distance is reached.

func (*BlockChain) GetVMConfig 

func (bc *BlockChain) GetVMConfig() *vm.Config

GetVMConfig returns the block chain VM config.

func (*BlockChain) HasBlock 

func (bc *BlockChain) HasBlock(hash common.Hash, number uint64) bool

HasBlock checks if a block is fully present in the database or not.

func (*BlockChain) HasBlockAndState 

func (bc *BlockChain) HasBlockAndState(hash common.Hash, number uint64) bool

HasBlockAndState checks if a block and associated state trie is fully present in the database or not, caching it if present.

func (*BlockChain) HasFastBlock added in v1.9.51 

func (bc *BlockChain) HasFastBlock(hash common.Hash, number uint64) bool

HasFastBlock checks if a fast block is fully present in the database or not.

func (*BlockChain) HasHeader 

func (bc *BlockChain) HasHeader(hash common.Hash, number uint64) bool

HasHeader checks if a block header is present in the database or not, caching it if present.

func (*BlockChain) HasState 

func (bc *BlockChain) HasState(hash common.Hash) bool

HasState checks if state trie is fully present in the database or not.

func (*BlockChain) InsertChain 

func (bc *BlockChain) InsertChain(chain types.Blocks) (int, error)

InsertChain attempts to insert the given batch of blocks in to the canonical chain or, otherwise, create a fork. If an error is returned it will return the index number of the failing block as well an error describing what went wrong.

After insertion is done, all accumulated events will be fired.

func (*BlockChain) InsertChainWithoutSealVerification added in v1.10.28 

func (bc *BlockChain) InsertChainWithoutSealVerification(block *types.Block) (int, error)

InsertChainWithoutSealVerification works exactly the same except for seal verification, seal verification is omitted

func (*BlockChain) InsertHeaderChain 

func (bc *BlockChain) InsertHeaderChain(chain []*types.Header, checkFreq int) (int, error)

InsertHeaderChain attempts to insert the given header chain in to the local chain, possibly creating a reorg. If an error is returned, it will return the index number of the failing header as well an error describing what went wrong.

The verify parameter can be used to fine tune whether nonce verification should be done or not. The reason behind the optional check is because some of the header retrieval mechanisms already need to verify nonces, as well as because nonces can be verified sparsely, not needing to check each.

func (*BlockChain) InsertReceiptChain 

func (bc *BlockChain) InsertReceiptChain(blockChain types.Blocks, receiptChain []types.Receipts, ancientLimit uint64) (int, error)

InsertReceiptChain attempts to complete an already existing header chain with transaction and receipt data.

func (*BlockChain) Processor 

func (bc *BlockChain) Processor() Processor

Processor returns the current processor.

func (*BlockChain) Reset 

func (bc *BlockChain) Reset() error

Reset purges the entire blockchain, restoring it to its genesis state.

func (*BlockChain) ResetWithGenesisBlock 

func (bc *BlockChain) ResetWithGenesisBlock(genesis *types.Block) error

ResetWithGenesisBlock purges the entire blockchain, restoring it to the specified genesis state.

func (*BlockChain) SetFinalized added in v1.10.31 

func (bc *BlockChain) SetFinalized(block *types.Block)

SetFinalized sets the finalized block.

func (*BlockChain) SetHead 

func (bc *BlockChain) SetHead(head uint64) error

SetHead rewinds the local chain to a new head. Depending on whether the node was fast synced or full synced and in which state, the method will try to delete minimal data from disk whilst retaining chain consistency.

func (*BlockChain) SetHeadWithTimestamp added in v1.10.39 

func (bc *BlockChain) SetHeadWithTimestamp(timestamp uint64) error

SetHeadWithTimestamp rewinds the local chain to a new head that has at max the given timestamp. Depending on whether the node was fast synced or full synced and in which state, the method will try to delete minimal data from disk whilst retaining chain consistency.

func (*BlockChain) SetSafe added in v1.10.31 

func (bc *BlockChain) SetSafe(block *types.Block)

SetSafe sets the safe block.

func (*BlockChain) SetTxLookupLimit added in v1.10.0 

func (bc *BlockChain) SetTxLookupLimit(limit uint64)

SetTxLookupLimit is responsible for updating the txlookup limit to the original one stored in db if the new mismatches with the old one.

func (*BlockChain) Snapshots added in v1.10.28 

func (bc *BlockChain) Snapshots() *snapshot.Tree

Snapshots returns the blockchain snapshot tree.

func (*BlockChain) State 

func (bc *BlockChain) State() (*state.StateDB, error)

State returns a new mutable state based on the current HEAD block.

func (*BlockChain) StateAt 

func (bc *BlockChain) StateAt(root common.Hash) (*state.StateDB, error)

StateAt returns a new mutable state based on a particular point in time.

func (*BlockChain) StateCache added in v1.9.53 

func (bc *BlockChain) StateCache() state.Database

StateCache returns the caching database underpinning the blockchain instance.

func (*BlockChain) Stop 

func (bc *BlockChain) Stop()

Stop stops the blockchain service. If any imports are currently in progress it will abort them using the procInterrupt.

func (*BlockChain) StopInsert added in v1.10.0 

func (bc *BlockChain) StopInsert()

StopInsert interrupts all insertion methods, causing them to return errInsertionInterrupted as soon as possible. Insertion is permanently disabled after calling this method.

func (*BlockChain) SubscribeBlockProcessingEvent added in v1.10.2 

func (bc *BlockChain) SubscribeBlockProcessingEvent(ch chan<- bool) event.Subscription

SubscribeBlockProcessingEvent registers a subscription of bool where true means block processing has started while false means it has stopped.

func (*BlockChain) SubscribeChainEvent 

func (bc *BlockChain) SubscribeChainEvent(ch chan<- ChainEvent) event.Subscription

SubscribeChainEvent registers a subscription of ChainEvent.

func (*BlockChain) SubscribeChainHeadEvent 

func (bc *BlockChain) SubscribeChainHeadEvent(ch chan<- ChainHeadEvent) event.Subscription

SubscribeChainHeadEvent registers a subscription of ChainHeadEvent.

func (*BlockChain) SubscribeChainSideEvent 

func (bc *BlockChain) SubscribeChainSideEvent(ch chan<- ChainSideEvent) event.Subscription

SubscribeChainSideEvent registers a subscription of ChainSideEvent.

func (*BlockChain) SubscribeLogsEvent 

func (bc *BlockChain) SubscribeLogsEvent(ch chan<- []*types.Log) event.Subscription

SubscribeLogsEvent registers a subscription of []*types.Log.

func (*BlockChain) SubscribeRemovedLogsEvent 

func (bc *BlockChain) SubscribeRemovedLogsEvent(ch chan<- RemovedLogsEvent) event.Subscription

SubscribeRemovedLogsEvent registers a subscription of RemovedLogsEvent.

func (*BlockChain) TrieNode 

func (bc *BlockChain) TrieNode(hash common.Hash) ([]byte, error)

TrieNode retrieves a blob of data associated with a trie node either from ephemeral in-memory cache, or from persistent storage.

func (*BlockChain) TxLookupLimit added in v1.10.0 

func (bc *BlockChain) TxLookupLimit() uint64

TxLookupLimit retrieves the txlookup limit used by blockchain to prune stale transaction indices.

func (*BlockChain) Validator 

func (bc *BlockChain) Validator() Validator

Validator returns the current validator.

func (*BlockChain) WriteBlockWithState 

func (bc *BlockChain) WriteBlockWithState(block *types.Block, receipts []*types.Receipt, logs []*types.Log, state *state.StateDB, emitHeadEvent bool) (status WriteStatus, err error)

WriteBlockWithState writes the block and all associated state to the database.

type BlockGen 

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

BlockGen creates blocks for testing. See GenerateChain for a detailed explanation.

func (*BlockGen) AddTx 

func (b *BlockGen) AddTx(tx *types.Transaction)

AddTx adds a transaction to the generated block. If no coinbase has been set, the block's coinbase is set to the zero address.

AddTx panics if the transaction cannot be executed. In addition to the protocol-imposed limitations (gas limit, etc.), there are some further limitations on the content of transactions that can be added. Notably, contract code relying on the BLOCKHASH instruction will panic during execution.

func (*BlockGen) AddTxWithChain 

func (b *BlockGen) AddTxWithChain(bc *BlockChain, tx *types.Transaction)

AddTxWithChain adds a transaction to the generated block. If no coinbase has been set, the block's coinbase is set to the zero address.

AddTxWithChain panics if the transaction cannot be executed. In addition to the protocol-imposed limitations (gas limit, etc.), there are some further limitations on the content of transactions that can be added. If contract code relies on the BLOCKHASH instruction, the block in chain will be returned.

func (*BlockGen) AddUncheckedReceipt 

func (b *BlockGen) AddUncheckedReceipt(receipt *types.Receipt)

AddUncheckedReceipt forcefully adds a receipts to the block without a backing transaction.

AddUncheckedReceipt will cause consensus failures when used during real chain processing. This is best used in conjunction with raw block insertion.

func (*BlockGen) AddUncheckedTx added in v1.10.3 

func (b *BlockGen) AddUncheckedTx(tx *types.Transaction)

AddUncheckedTx forcefully adds a transaction to the block without any validation.

AddUncheckedTx will cause consensus failures when used during real chain processing. This is best used in conjunction with raw block insertion.

func (*BlockGen) AddUncle 

func (b *BlockGen) AddUncle(h *types.Header)

AddUncle adds an uncle header to the generated block.

func (*BlockGen) GetBalance added in v1.10.23 

func (b *BlockGen) GetBalance(addr common.Address) *big.Int

GetBalance returns the balance of the given address at the generated block.

func (*BlockGen) Number 

func (b *BlockGen) Number() *big.Int

Number returns the block number of the block being generated.

func (*BlockGen) OffsetTime 

func (b *BlockGen) OffsetTime(seconds int64)

OffsetTime modifies the time instance of a block, implicitly changing its associated difficulty. It's useful to test scenarios where forking is not tied to chain length directly.

func (*BlockGen) PrevBlock 

func (b *BlockGen) PrevBlock(index int) *types.Block

PrevBlock returns a previously generated block by number. It panics if num is greater or equal to the number of the block being generated. For index -1, PrevBlock returns the parent block given to GenerateChain.

func (*BlockGen) SetCoinbase 

func (b *BlockGen) SetCoinbase(addr common.Address)

SetCoinbase sets the coinbase of the generated block. It can be called at most once.

func (*BlockGen) SetDifficulty added in v1.10.13 

func (b *BlockGen) SetDifficulty(diff *big.Int)

SetDifficulty sets the difficulty field of the generated block. This method is useful for Clique tests where the difficulty does not depend on time. For the cuckoo tests, please use OffsetTime, which implicitly recalculates the diff.

func (*BlockGen) SetExtra 

func (b *BlockGen) SetExtra(data []byte)

SetExtra sets the extra data field of the generated block.

func (*BlockGen) SetNonce 

func (b *BlockGen) SetNonce(nonce types.BlockNonce)

SetNonce sets the nonce field of the generated block.

func (*BlockGen) Timestamp added in v1.10.39 

func (b *BlockGen) Timestamp() uint64

Timestamp returns the timestamp of the block being generated.

func (*BlockGen) TxNonce 

func (b *BlockGen) TxNonce(addr common.Address) uint64

TxNonce returns the next valid transaction nonce for the account at addr. It panics if the account does not exist.

type BlockValidator 

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

BlockValidator is responsible for validating block headers, uncles and processed state.

BlockValidator implements Validator.

func NewBlockValidator 

func NewBlockValidator(config *params.ChainConfig, blockchain *BlockChain, engine consensus.Engine) *BlockValidator

NewBlockValidator returns a new block validator which is safe for re-use

func (*BlockValidator) ValidateBody 

func (v *BlockValidator) ValidateBody(block *types.Block) error

ValidateBody validates the given block's uncles and verifies the block header's transaction and uncle roots. The headers are assumed to be already validated at this point.

func (*BlockValidator) ValidateState 

func (v *BlockValidator) ValidateState(block *types.Block, statedb *state.StateDB, receipts types.Receipts, usedGas uint64) error

ValidateState validates the various changes that happen after a state transition, such as amount of used gas, the receipt roots and the state root itself. ValidateState returns a database batch if the validation was a success otherwise nil and an error is returned.

type CacheConfig 

type CacheConfig struct {
	TrieCleanLimit      int           // Memory allowance (MB) to use for caching trie nodes in memory
	TrieCleanJournal    string        // Disk journal for saving clean cache entries.
	TrieCleanRejournal  time.Duration // Time interval to dump clean cache to disk periodically
	TrieCleanNoPrefetch bool          // Whether to disable heuristic state prefetching for followup blocks
	TrieDirtyLimit      int           // Memory limit (MB) at which to start flushing dirty trie nodes to disk
	TrieDirtyDisabled   bool          // Whether to disable trie write caching and GC altogether (archive node)
	TrieTimeLimit       time.Duration // Time limit after which to flush the current in-memory trie to disk
	SnapshotLimit       int           // Memory allowance (MB) to use for caching snapshot entries in memory
	Preimages           bool          // Whether to store preimage of trie key to the disk

	SnapshotNoBuild bool // Whether the background generation is allowed
	SnapshotWait    bool // Wait for snapshot construction on startup. TODO(karalabe): This is a dirty hack for testing, nuke it
}

CacheConfig contains the configuration values for the trie caching/pruning that's resident in a blockchain.

type ChainContext 

type ChainContext interface {
	// Engine retrieves the chain's consensus engine.
	Engine() consensus.Engine

	// GetHeader returns the header corresponding to the hash/number argument pair.
	GetHeader(common.Hash, uint64) *types.Header
}

ChainContext supports retrieving headers and consensus parameters from the current blockchain to be used during transaction processing.

type ChainEvent 

type ChainEvent struct {
	Block *types.Block
	Hash  common.Hash
	Logs  []*types.Log
}

type ChainHeadEvent 

type ChainHeadEvent struct{ Block *types.Block }

type ChainIndexer 

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

ChainIndexer does a post-processing job for equally sized sections of the canonical chain (like BlooomBits and CHT structures). A ChainIndexer is connected to the blockchain through the event system by starting a ChainHeadEventLoop in a goroutine.

Further child ChainIndexers can be added which use the output of the parent section indexer. These child indexers receive new head notifications only after an entire section has been finished or in case of rollbacks that might affect already finished sections.

func NewChainIndexer 

func NewChainIndexer(chainDb ctxcdb.Database, indexDb ctxcdb.Database, backend ChainIndexerBackend, section, confirm uint64, throttling time.Duration, kind string) *ChainIndexer

NewChainIndexer creates a new chain indexer to do background processing on chain segments of a given size after certain number of confirmations passed. The throttling parameter might be used to prevent database thrashing.

func (*ChainIndexer) AddCheckpoint 

func (c *ChainIndexer) AddCheckpoint(section uint64, shead common.Hash)

AddCheckpoint adds a checkpoint. Sections are never processed and the chain is not expected to be available before this point. The indexer assumes that the backend has sufficient information available to process subsequent sections.

Note: knownSections == 0 and storedSections == checkpointSections until syncing reaches the checkpoint

func (*ChainIndexer) AddChildIndexer 

func (c *ChainIndexer) AddChildIndexer(indexer *ChainIndexer)

AddChildIndexer adds a child ChainIndexer that can use the output of this one

func (*ChainIndexer) Close 

func (c *ChainIndexer) Close() error

Close tears down all goroutines belonging to the indexer and returns any error that might have occurred internally.

func (*ChainIndexer) SectionHead 

func (c *ChainIndexer) SectionHead(section uint64) common.Hash

SectionHead retrieves the last block hash of a processed section from the index database.

func (*ChainIndexer) Sections 

func (c *ChainIndexer) Sections() (uint64, uint64, common.Hash)

Sections returns the number of processed sections maintained by the indexer and also the information about the last header indexed for potential canonical verifications.

func (*ChainIndexer) Start 

func (c *ChainIndexer) Start(chain ChainIndexerChain)

Start creates a goroutine to feed chain head events into the indexer for cascading background processing. Children do not need to be started, they are notified about new events by their parents.

type ChainIndexerBackend 

type ChainIndexerBackend interface {
	// Reset initiates the processing of a new chain segment, potentially terminating
	// any partially completed operations (in case of a reorg).
	Reset(ctx context.Context, section uint64, prevHead common.Hash) error

	// Process crunches through the next header in the chain segment. The caller
	// will ensure a sequential order of headers.
	Process(ctx context.Context, header *types.Header) error

	// Commit finalizes the section metadata and stores it into the database.
	Commit() error
}

ChainIndexerBackend defines the methods needed to process chain segments in the background and write the segment results into the database. These can be used to create filter blooms or CHTs.

type ChainIndexerChain 

type ChainIndexerChain interface {
	// CurrentHeader retrieves the latest locally known header.
	CurrentHeader() *types.Header

	// SubscribeChainHeadEvent subscribes to new head header notifications.
	SubscribeChainHeadEvent(ch chan<- ChainHeadEvent) event.Subscription
}

ChainIndexerChain interface is used for connecting the indexer to a blockchain

type ChainSideEvent 

type ChainSideEvent struct {
	Block *types.Block
}

type DeleteBlockContentCallback added in v1.9.51 

type DeleteBlockContentCallback func(ctxcdb.KeyValueWriter, common.Hash, uint64)

DeleteBlockContentCallback is a callback function that is called by SetHead before each header is deleted.

type ExecutionResult added in v1.10.52 

type ExecutionResult struct {
	UsedGas     uint64 // Total used gas, not including the refunded gas
	Quota       uint64
	RefundedGas uint64 // Total gas refunded after execution
	Err         error  // Any error encountered during the execution(listed in core/vm/errors.go)
	ReturnData  []byte // Returned data from evm(function result or data supplied with revert opcode)
}

ExecutionResult includes all output after executing given evm message no matter the execution itself is successful or not.

func ApplyMessage 

func ApplyMessage(cvm *vm.CVM, msg *Message, gp *GasPool, qp *QuotaPool) (*ExecutionResult, error)

ApplyMessage computes the new state by applying the given message against the old state within the environment.

ApplyMessage returns the bytes returned by any CVM execution (if it took place), the gas used (which includes gas refunds) and an error if it failed. An error always indicates a core error meaning that the message would always fail for that particular state and would never be accepted within a block.

func (*ExecutionResult) Failed added in v1.10.52 

func (result *ExecutionResult) Failed() bool

Failed returns the indicator whether the execution is successful or not

func (*ExecutionResult) Return added in v1.10.52 

func (result *ExecutionResult) Return() []byte

Return is a helper function to help caller distinguish between revert reason and function return. Return returns the data after execution if no error occurs.

func (*ExecutionResult) Revert added in v1.10.52 

func (result *ExecutionResult) Revert() []byte

Revert returns the concrete revert reason if the execution is aborted by `REVERT` opcode. Note the reason can be nil if no data supplied with revert opcode.

func (*ExecutionResult) Unwrap added in v1.10.52 

func (result *ExecutionResult) Unwrap() error

Unwrap returns the internal evm error which allows us for further analysis outside.

type GasPool 

type GasPool uint64

GasPool tracks the amount of gas available during execution of the transactions in a block. The zero value is a pool with zero gas available.

func (*GasPool) AddGas 

func (gp *GasPool) AddGas(amount uint64) *GasPool

AddGas makes gas available for execution.

func (*GasPool) Gas 

func (gp *GasPool) Gas() uint64

Gas returns the amount of gas remaining in the pool.

func (*GasPool) SetGas added in v1.10.39 

func (gp *GasPool) SetGas(gas uint64)

SetGas sets the amount of gas with the provided number.

func (*GasPool) String 

func (gp *GasPool) String() string

func (*GasPool) SubGas 

func (gp *GasPool) SubGas(amount uint64) error

SubGas deducts the given amount from the pool if enough gas is available and returns an error otherwise.

type Genesis 

type Genesis struct {
	Config     *params.ChainConfig `json:"config"`
	Nonce      uint64              `json:"nonce"`
	Timestamp  uint64              `json:"timestamp"`
	ExtraData  []byte              `json:"extraData"`
	GasLimit   uint64              `json:"gasLimit"   gencodec:"required"`
	Difficulty *big.Int            `json:"difficulty" gencodec:"required"`
	Mixhash    common.Hash         `json:"mixHash"`
	Coinbase   common.Address      `json:"coinbase"`
	Alloc      GenesisAlloc        `json:"alloc"      gencodec:"required"`

	// These fields are used for consensus tests. Please don't use them
	// in actual genesis blocks.
	Number     uint64      `json:"number"`
	GasUsed    uint64      `json:"gasUsed"`
	ParentHash common.Hash `json:"parentHash"`
	Supply     *big.Int    `json:"supply"           gencodec:"required"`
}

Genesis specifies the header fields, state of a genesis block. It also defines hard fork switch-over blocks through the chain configuration.

func DefaultBernardGenesisBlock added in v1.0.0 

func DefaultBernardGenesisBlock() *Genesis

DefaultTestnetGenesisBlock returns the Ropsten network genesis block.

func DefaultDoloresGenesisBlock added in v1.0.0 

func DefaultDoloresGenesisBlock() *Genesis

DefaultTestnetGenesisBlock returns the Ropsten network genesis block.

func DefaultFloodGenesisBlock added in v1.10.25 

func DefaultFloodGenesisBlock() *Genesis

func DefaultGenesisBlock 

func DefaultGenesisBlock() *Genesis

DefaultGenesisBlock returns the Cortex main net genesis block.

func (*Genesis) Commit 

func (g *Genesis) Commit(db ctxcdb.Database) (*types.Block, error)

Commit writes the block and state of a genesis specification to the database. The block is committed as the canonical head block.

func (Genesis) MarshalJSON 

func (g Genesis) MarshalJSON() ([]byte, error)

MarshalJSON marshals as JSON.

func (*Genesis) MustCommit 

func (g *Genesis) MustCommit(db ctxcdb.Database) *types.Block

MustCommit writes the genesis block and state to db, panicking on error. The block is committed as the canonical head block.

func (*Genesis) ToBlock 

func (g *Genesis) ToBlock(db ctxcdb.Database) *types.Block

ToBlock creates the genesis block and writes state of a genesis specification to the given database (or discards it if nil).

func (*Genesis) UnmarshalJSON 

func (g *Genesis) UnmarshalJSON(input []byte) error

UnmarshalJSON unmarshals from JSON.

type GenesisAccount 

type GenesisAccount struct {
	Code       []byte                      `json:"code,omitempty"`
	Storage    map[common.Hash]common.Hash `json:"storage,omitempty"`
	Balance    *big.Int                    `json:"balance" gencodec:"required"`
	BlockNum   *big.Int                    `json:"blocknum"`
	Nonce      uint64                      `json:"nonce,omitempty"`
	PrivateKey []byte                      `json:"secretKey,omitempty"` // for tests
}

GenesisAccount is an account in the state of the genesis block.

func (GenesisAccount) MarshalJSON 

func (g GenesisAccount) MarshalJSON() ([]byte, error)

MarshalJSON marshals as JSON.

func (*GenesisAccount) UnmarshalJSON 

func (g *GenesisAccount) UnmarshalJSON(input []byte) error

UnmarshalJSON unmarshals from JSON.

type GenesisAlloc 

type GenesisAlloc map[common.Address]GenesisAccount

GenesisAlloc specifies the initial state that is part of the genesis block.

func (*GenesisAlloc) UnmarshalJSON 

func (ga *GenesisAlloc) UnmarshalJSON(data []byte) error

type GenesisMismatchError 

type GenesisMismatchError struct {
	Stored, New common.Hash
}

GenesisMismatchError is raised when trying to overwrite an existing genesis block with an incompatible one.

func (*GenesisMismatchError) Error 

func (e *GenesisMismatchError) Error() string

type HeaderChain 

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

HeaderChain implements the basic block header chain logic that is shared by core.BlockChain and light.LightChain. It is not usable in itself, only as a part of either structure. It is not thread safe either, the encapsulating chain structures should do the necessary mutex locking/unlocking.

func NewHeaderChain 

func NewHeaderChain(chainDb ctxcdb.Database, config *params.ChainConfig, engine consensus.Engine, procInterrupt func() bool) (*HeaderChain, error)

NewHeaderChain creates a new HeaderChain structure. 

getValidator should return the parent's validator
procInterrupt points to the parent's interrupt semaphore
wg points to the parent's shutdown wait group

func (*HeaderChain) Config 

func (hc *HeaderChain) Config() *params.ChainConfig

Config retrieves the header chain's chain configuration.

func (*HeaderChain) CurrentHeader 

func (hc *HeaderChain) CurrentHeader() *types.Header

CurrentHeader retrieves the current head header of the canonical chain. The header is retrieved from the HeaderChain's internal cache.

func (*HeaderChain) Engine 

func (hc *HeaderChain) Engine() consensus.Engine

Engine retrieves the header chain's consensus engine.

func (*HeaderChain) GetAncestor 

func (hc *HeaderChain) GetAncestor(hash common.Hash, number, ancestor uint64, maxNonCanonical *uint64) (common.Hash, uint64)

GetAncestor retrieves the Nth ancestor of a given block. It assumes that either the given block or a close ancestor of it is canonical. maxNonCanonical points to a downwards counter limiting the number of blocks to be individually checked before we reach the canonical chain.

Note: ancestor == 0 returns the same block, 1 returns its parent and so on.

func (*HeaderChain) GetBlock 

func (hc *HeaderChain) GetBlock(hash common.Hash, number uint64) *types.Block

GetBlock implements consensus.ChainReader, and returns nil for every input as a header chain does not have blocks available for retrieval.

func (*HeaderChain) GetBlockHashesFromHash 

func (hc *HeaderChain) GetBlockHashesFromHash(hash common.Hash, max uint64) []common.Hash

GetBlockHashesFromHash retrieves a number of block hashes starting at a given hash, fetching towards the genesis block.

func (*HeaderChain) GetBlockNumber 

func (hc *HeaderChain) GetBlockNumber(hash common.Hash) *uint64

GetBlockNumber retrieves the block number belonging to the given hash from the cache or database

func (*HeaderChain) GetCanonicalHash added in v1.9.51 

func (hc *HeaderChain) GetCanonicalHash(number uint64) common.Hash

func (*HeaderChain) GetHeader 

func (hc *HeaderChain) GetHeader(hash common.Hash, number uint64) *types.Header

GetHeader retrieves a block header from the database by hash and number, caching it if found.

func (*HeaderChain) GetHeaderByHash 

func (hc *HeaderChain) GetHeaderByHash(hash common.Hash) *types.Header

GetHeaderByHash retrieves a block header from the database by hash, caching it if found.

func (*HeaderChain) GetHeaderByNumber 

func (hc *HeaderChain) GetHeaderByNumber(number uint64) *types.Header

GetHeaderByNumber retrieves a block header from the database by number, caching it (associated with its hash) if found.

func (*HeaderChain) GetHeadersFrom added in v1.10.30 

func (hc *HeaderChain) GetHeadersFrom(number, count uint64) []rlp.RawValue

GetHeadersFrom returns a contiguous segment of headers, in rlp-form, going backwards from the given number. If the 'number' is higher than the highest local header, this method will return a best-effort response, containing the headers that we do have.

func (*HeaderChain) GetTd 

func (hc *HeaderChain) GetTd(hash common.Hash, number uint64) *big.Int

GetTd retrieves a block's total difficulty in the canonical chain from the database by hash and number, caching it if found.

func (*HeaderChain) GetTdByHash 

func (hc *HeaderChain) GetTdByHash(hash common.Hash) *big.Int

GetTdByHash retrieves a block's total difficulty in the canonical chain from the database by hash, caching it if found.

func (*HeaderChain) HasHeader 

func (hc *HeaderChain) HasHeader(hash common.Hash, number uint64) bool

HasHeader checks if a block header is present in the database or not.

func (*HeaderChain) InsertHeaderChain 

func (hc *HeaderChain) InsertHeaderChain(chain []*types.Header, start time.Time) (WriteStatus, error)

InsertHeaderChain inserts the given headers.

The validity of the headers is NOT CHECKED by this method, i.e. they need to be validated by ValidateHeaderChain before calling InsertHeaderChain.

This insert is all-or-nothing. If this returns an error, no headers were written, otherwise they were all processed successfully.

The returned 'write status' says if the inserted headers are part of the canonical chain or a side chain.

func (*HeaderChain) SetCurrentHeader 

func (hc *HeaderChain) SetCurrentHeader(head *types.Header)

SetCurrentHeader sets the current head header of the canonical chain.

func (*HeaderChain) SetGenesis 

func (hc *HeaderChain) SetGenesis(head *types.Header)

SetGenesis sets a new genesis block header for the chain

func (*HeaderChain) SetHead 

func (hc *HeaderChain) SetHead(head uint64, updateFn UpdateHeadBlocksCallback, delFn DeleteBlockContentCallback)

SetHead rewinds the local chain to a new head. Everything above the new head will be deleted and the new one set.

func (*HeaderChain) SetHeadWithTimestamp added in v1.10.39 

func (hc *HeaderChain) SetHeadWithTimestamp(time uint64, updateFn UpdateHeadBlocksCallback, delFn DeleteBlockContentCallback)

SetHeadWithTimestamp rewinds the local chain to a new head timestamp. Everything above the new head will be deleted and the new one set.

func (*HeaderChain) ValidateHeaderChain 

func (hc *HeaderChain) ValidateHeaderChain(chain []*types.Header, checkFreq int) (int, error)

type Message 

type Message struct {
	To                *common.Address
	From              common.Address
	Nonce             uint64
	Value             *big.Int
	GasLimit          uint64
	GasPrice          *big.Int
	Data              []byte
	SkipAccountChecks bool
}

func TransactionToMessage added in v1.10.39 

func TransactionToMessage(tx *types.Transaction, s types.Signer) (*Message, error)

XXX Rename message to something less arbitrary? TransactionToMessage converts a transaction into a Message.

type NewMinedBlockEvent 

type NewMinedBlockEvent struct{ Block *types.Block }

NewMinedBlockEvent is posted when a block has been imported.

type NewTxsEvent 

type NewTxsEvent struct{ Txs []*types.Transaction }

NewTxsEvent is posted when a batch of transactions enter the transaction pool.

type PendingLogsEvent 

type PendingLogsEvent struct {
	Logs []*types.Log
}

PendingLogsEvent is posted pre mining and notifies of pending logs.

type Prefetcher added in v1.9.51 

type Prefetcher interface {
	// Prefetch processes the state changes according to the Cortex rules by running
	// the transaction messages using the statedb, but any changes are discarded. The
	// only goal is to pre-cache transaction signatures and state trie nodes.
	Prefetch(block *types.Block, statedb *state.StateDB, cfg vm.Config, interrupt *atomic.Bool)
}

Prefetcher is an interface for pre-caching transaction signatures and state.

type Processor 

type Processor interface {
	Process(block *types.Block, statedb *state.StateDB, cfg vm.Config) (types.Receipts, []*types.Log, uint64, error)
}

Processor is an interface for processing blocks using a given initial state.

Process takes the block to be processed and the statedb upon which the initial state is based. It should return the receipts generated, amount of gas used in the process and return an error if any of the internal rules failed.

type QuotaPool added in v1.10.6 

type QuotaPool uint64

QuotaPool tracks the amount of gas available during execution of the transactions in a block. The zero value is a pool with zero gas available.

func NewQuotaPool added in v1.10.6 

func NewQuotaPool(x uint64) *QuotaPool

func (*QuotaPool) AddQuota added in v1.10.6 

func (qp *QuotaPool) AddQuota(amount uint64) *QuotaPool

AddGas makes gas available for execution.

func (*QuotaPool) Quota added in v1.10.6 

func (qp *QuotaPool) Quota() uint64

Gas returns the amount of gas remaining in the pool.

func (*QuotaPool) String added in v1.10.6 

func (qp *QuotaPool) String() string

func (*QuotaPool) SubQuota added in v1.10.6 

func (qp *QuotaPool) SubQuota(amount uint64) error

SubGas deducts the given amount from the pool if enough gas is available and returns an error otherwise.

type RemovedLogsEvent 

type RemovedLogsEvent struct{ Logs []*types.Log }

RemovedLogsEvent is posted when a reorg happens

type StateProcessor 

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

StateProcessor is a basic Processor, which takes care of transitioning state from one point to another.

StateProcessor implements Processor.

func NewStateProcessor 

func NewStateProcessor(config *params.ChainConfig, bc *BlockChain, engine consensus.Engine) *StateProcessor

NewStateProcessor initialises a new StateProcessor.

func (*StateProcessor) Process 

func (p *StateProcessor) Process(block *types.Block, statedb *state.StateDB, cfg vm.Config) (types.Receipts, []*types.Log, uint64, error)

Process processes the state changes according to the Cortex rules by running the transaction messages using the statedb and applying any rewards to both the processor (coinbase) and any included uncles.

Process returns the receipts and logs accumulated during the process and returns the amount of gas that was used in the process. If any of the transactions failed to execute due to insufficient gas it will return an error.

type StateTransition 

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

StateTransition is the state of current tx in vm

func NewStateTransition 

func NewStateTransition(cvm *vm.CVM, msg *Message, gp *GasPool, qp *QuotaPool) *StateTransition

NewStateTransition initialises and returns a new state transition object.

func (*StateTransition) TransitionDb 

func (st *StateTransition) TransitionDb() (*ExecutionResult, error)

const interv = 5 

func (st *StateTransition) TorrentSync(meta common.Address, dir string, errCh chan error) {
	street := big.NewInt(0).Sub(st.cvm.PeekNumber, st.cvm.BlockNumber)
	point := big.NewInt(time.Now().Add(confirmTime).Unix())
	if point.Cmp(st.cvm.Context.Time) > 0 || street.Cmp(big.NewInt(params.CONFIRM_BLOCKS)) > 0 {
		duration := big.NewInt(0).Sub(big.NewInt(time.Now().Unix()), st.cvm.Context.Time)
		cost := big.NewInt(0)
		for i := 0; i < 3600 && duration.Cmp(cost) > 0; i++ {
			if !torrentfs.ExistTorrent(meta.Hex()) {
				log.Warn("Torrent synchronizing ... ...", "tvm", st.cvm.Context.Time, "duration", duration, "ago", common.PrettyDuration(time.Duration(duration.Uint64()*1000000000)), "level", i, "number", st.cvm.BlockNumber, "cost", cost, "peek", st.cvm.PeekNumber, "street", street)
				cost.Add(cost, big.NewInt(interv))
				time.Sleep(time.Second * interv)
				continue
			} else {
				log.Debug("Torrent has been found", "address", st.to(), "number", st.state.GetNum(st.to()), "current", st.cvm.BlockNumber, "meta", meta, "storage", dir, "level", i, "duration", duration, "ago", common.PrettyDuration(time.Duration(duration.Uint64()*1000000000)), "cost", cost)
				errCh <- nil
				return
			}
		}

		log.Error("Torrent synchronized timeout", "address", st.to(), "number", st.state.GetNum(st.to()), "current", st.cvm.BlockNumber, "meta", meta, "storage", dir, "street", street, "duration", duration, "cost", cost)
	} else {
		if !torrentfs.ExistTorrent(meta.Hex()) {
			log.Warn("Torrent not exist", "address", st.to(), "number", st.state.GetNum(st.to()), "current", st.cvm.BlockNumber, "meta", meta, "storage", dir)
			errCh <- ErrUnhandleTx
			return
		} else {
			errCh <- nil
			return
		}
	}

	if !torrentfs.ExistTorrent(meta.Hex()) {
		log.Error("Torrent synchronized failed", "address", st.to(), "number", st.state.GetNum(st.to()), "current", st.cvm.BlockNumber, "meta", meta, "storage", dir, "street", street)
		errCh <- ErrUnhandleTx
		return
	} else {
		errCr <- nil
		return
	}
}

TransitionDb will transition the state by applying the current message and returning the result including the used gas. It returns an error if failed. An error indicates a consensus issue.

type UpdateHeadBlocksCallback added in v1.9.51 

type UpdateHeadBlocksCallback func(ctxcdb.KeyValueWriter, *types.Header) (*types.Header, bool)

UpdateHeadBlocksCallback is a callback function that is called by SetHead before head header is updated. The method will return the actual block it updated the head to (missing state) and a flag if setHead should continue rewinding till that forcefully (exceeded ancient limits)

type Validator 

type Validator interface {
	// ValidateBody validates the given block's content.
	ValidateBody(block *types.Block) error

	// ValidateState validates the given statedb and optionally the receipts and
	// gas used.
	ValidateState(block *types.Block, state *state.StateDB, receipts types.Receipts, usedGas uint64) error
}

Validator is an interface which defines the standard for block validation. It is only responsible for validating block contents, as the header validation is done by the specific consensus engines.

type WriteStatus 

type WriteStatus byte

WriteStatus status of write 

const (
	NonStatTy WriteStatus = iota
	CanonStatTy
	SideStatTy
)

Source Files

View all Source files

Directories

Path Synopsis
Provides support for dealing with CVM assembly instructions (e.g., disassembling them).
 Provides support for dealing with CVM assembly instructions (e.g., disassembling them).
Package bloombits implements bloom filtering on batches of data.
 Package bloombits implements bloom filtering on batches of data.
Package forkid implements EIP-2124 (https://eips.cortex.org/EIPS/eip-2124).
 Package forkid implements EIP-2124 (https://eips.cortex.org/EIPS/eip-2124).
Package rawdb contains a collection of low level database accessors.
 Package rawdb contains a collection of low level database accessors.
snapshot
Package snapshot implements a journaled, dynamic state dump.
 Package snapshot implements a journaled, dynamic state dump.
Package types contains data types related to Cortex consensus.
 Package types contains data types related to Cortex consensus.
vm
Package vm implements the Cortex Virtual Machine.
 Package vm implements the Cortex Virtual Machine.
runtime
Package runtime provides a basic execution model for executing CVM code.
 Package runtime provides a basic execution model for executing CVM code.

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