Documentation

Overview

    Package core implements the Ethereum consensus protocol.

    Index

    Examples

    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")
    
    	// ErrBlacklistedHash is returned if a block to import is on the blacklist.
    	ErrBlacklistedHash = errors.New("blacklisted hash")
    
    	// ErrNoGenesis is returned when there is no Genesis Block.
    	ErrNoGenesis = errors.New("genesis not found in chain")
    )
    View Source
    var (
    	// 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")
    
    	// 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")
    
    	// 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")
    
    	// ErrInsufficientFundsForTransfer is returned if the transaction sender doesn't
    	// have enough funds for transfer(topmost call only).
    	ErrInsufficientFundsForTransfer = errors.New("insufficient funds for transfer")
    
    	// 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")
    
    	// ErrGasUintOverflow is returned when calculating gas usage.
    	ErrGasUintOverflow = errors.New("gas uint64 overflow")
    
    	// 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")
    )

      List of evm-call-message pre-checking errors. All state transition messages will be pre-checked before execution. If any invalidation detected, the corresponding error should be returned which is defined here.

      - If the pre-checking happens in the miner, then the transaction won't be packed. - If the pre-checking happens in the block processing procedure, then a "BAD BLOCk" error should be emitted.

      View Source
      var (
      	// ErrAlreadyKnown is returned if the transactions is already contained
      	// within the pool.
      	ErrAlreadyKnown = errors.New("already known")
      
      	// ErrInvalidSender is returned if the transaction contains an invalid signature.
      	ErrInvalidSender = errors.New("invalid sender")
      
      	// ErrUnderpriced is returned if a transaction's gas price is below the minimum
      	// configured for the transaction pool.
      	ErrUnderpriced = errors.New("transaction underpriced")
      
      	// ErrReplaceUnderpriced is returned if a transaction is attempted to be replaced
      	// with a different one without the required price bump.
      	ErrReplaceUnderpriced = errors.New("replacement transaction underpriced")
      
      	// ErrGasLimit is returned if a transaction's requested gas limit exceeds the
      	// maximum allowance of the current block.
      	ErrGasLimit = errors.New("exceeds block gas limit")
      
      	// ErrNegativeValue is a sanity error to ensure no one is able to specify a
      	// transaction with a negative value.
      	ErrNegativeValue = errors.New("negative value")
      
      	// ErrOversizedData is returned if the input data of a transaction is greater
      	// than some meaningful limit a user might use. This is not a consensus error
      	// making the transaction invalid, rather a DOS protection.
      	ErrOversizedData = errors.New("oversized data")
      )
      View Source
      var BadHashes = map[common.Hash]bool{
      	common.HexToHash("05bef30ef572270f654746da22639a7a0c97dd97a7050b9e252391996aaeb689"): true,
      	common.HexToHash("7d05d08cbc596a2e5e4f13b80a743e53e09221b5323c3a61946b20873e58583f"): true,
      }

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

        View Source
        var DefaultTxPoolConfig = TxPoolConfig{
        	Journal:   "transactions.rlp",
        	Rejournal: time.Hour,
        
        	PriceLimit: 1,
        	PriceBump:  10,
        
        	AccountSlots: 16,
        	GlobalSlots:  4096,
        	AccountQueue: 64,
        	GlobalQueue:  1024,
        
        	Lifetime: 3 * time.Hour,
        }

          DefaultTxPoolConfig contains the default configurations for the transaction pool.

          Functions

          func ApplyTransaction

          func ApplyTransaction(config *params.ChainConfig, bc ChainContext, author *common.Address, gp *GasPool, 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 ethdb.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.

                  Example
                  Output:
                  
                  last block: #5
                  balance of addr1: 989000
                  balance of addr2: 10000
                  balance of addr3: 19687500000000001000
                  

                  func GenesisBlockForTesting

                  func GenesisBlockForTesting(db ethdb.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, isHomestead bool, isEIP2028 bool) (uint64, error)

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

                        func NewEVMBlockContext

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

                          NewEVMBlockContext creates a new context for use in the EVM.

                          func NewEVMTxContext

                          func NewEVMTxContext(msg Message) vm.TxContext

                            NewEVMTxContext creates a new transaction context for a single transaction.

                            func SetupGenesisBlock

                            func SetupGenesisBlock(db ethdb.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 {
                                	// 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 ethdb.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 Ethereum Validator and Processor.

                                    func (*BlockChain) BadBlocks

                                    func (bc *BlockChain) BadBlocks() []*types.Block

                                      BadBlocks returns a list of the last 'bad blocks' that the client has seen on the network

                                      func (*BlockChain) Config

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

                                        Config retrieves the chain's fork configuration.

                                        func (*BlockChain) ContractCode

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

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

                                          func (*BlockChain) ContractCodeWithPrefix

                                          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) 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) 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) GetBlockHashesFromHash

                                                                      func (bc *BlockChain) 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 (*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

                                                                              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) 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

                                                                                            func (bc *BlockChain) GetTransactionLookup(hash common.Hash) *rawdb.LegacyTxLookupEntry

                                                                                              GetTransactionLookup retrieves the lookup associate with the given transaction hash from the cache or database.

                                                                                              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

                                                                                                      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) 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) 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) SetHeadBeyondRoot

                                                                                                                          func (bc *BlockChain) SetHeadBeyondRoot(head uint64, root common.Hash) (uint64, error)

                                                                                                                            SetHeadBeyondRoot rewinds the local chain to a new head with the extra condition that the rewind must pass the specified state root. This method is meant to be used when rewiding with snapshots enabled to ensure that we go back further than persistent disk layer. Depending on whether the node was fast synced or full, and in which state, the method will try to delete minimal data from disk whilst retaining chain consistency.

                                                                                                                            The method returns the block number where the requested root cap was found.

                                                                                                                            func (*BlockChain) SetTxLookupLimit

                                                                                                                            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) Snapshot

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

                                                                                                                                Snapshot returns the blockchain snapshot tree. This method is mainly used for testing, to make it possible to verify the snapshot after execution.

                                                                                                                                Warning: There are no guarantees about the safety of using the returned 'snap' if the blockchain is simultaneously importing blocks, so take care.

                                                                                                                                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

                                                                                                                                    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

                                                                                                                                        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

                                                                                                                                          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

                                                                                                                                                        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

                                                                                                                                                                      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) 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

                                                                                                                                                                                  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 ethash 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) 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
                                                                                                                                                                                                  
                                                                                                                                                                                                  	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 hash corresponding to their hash.
                                                                                                                                                                                                    	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 ethdb.Database, indexDb ethdb.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) Prune

                                                                                                                                                                                                                func (c *ChainIndexer) Prune(threshold uint64) error

                                                                                                                                                                                                                  Prune deletes all chain data older than given threshold.

                                                                                                                                                                                                                  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
                                                                                                                                                                                                                        
                                                                                                                                                                                                                        	// Prune deletes the chain index older than the given threshold.
                                                                                                                                                                                                                        	Prune(threshold uint64) 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

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

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

                                                                                                                                                                                                                              type ExecutionResult

                                                                                                                                                                                                                              type ExecutionResult struct {
                                                                                                                                                                                                                              	UsedGas    uint64 // Total used gas but include the refunded gas
                                                                                                                                                                                                                              	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(evm *vm.EVM, msg Message, gp *GasPool) (*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 EVM 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

                                                                                                                                                                                                                                  func (result *ExecutionResult) Failed() bool

                                                                                                                                                                                                                                    Failed returns the indicator whether the execution is successful or not

                                                                                                                                                                                                                                    func (*ExecutionResult) Return

                                                                                                                                                                                                                                    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

                                                                                                                                                                                                                                      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

                                                                                                                                                                                                                                        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) 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"`
                                                                                                                                                                                                                                                  }

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

                                                                                                                                                                                                                                                    func DefaultGenesisBlock

                                                                                                                                                                                                                                                    func DefaultGenesisBlock() *Genesis

                                                                                                                                                                                                                                                      DefaultGenesisBlock returns the Ethereum main net genesis block.

                                                                                                                                                                                                                                                      func DefaultGoerliGenesisBlock

                                                                                                                                                                                                                                                      func DefaultGoerliGenesisBlock() *Genesis

                                                                                                                                                                                                                                                        DefaultGoerliGenesisBlock returns the Görli network genesis block.

                                                                                                                                                                                                                                                        func DefaultRinkebyGenesisBlock

                                                                                                                                                                                                                                                        func DefaultRinkebyGenesisBlock() *Genesis

                                                                                                                                                                                                                                                          DefaultRinkebyGenesisBlock returns the Rinkeby network genesis block.

                                                                                                                                                                                                                                                          func DefaultRopstenGenesisBlock

                                                                                                                                                                                                                                                          func DefaultRopstenGenesisBlock() *Genesis

                                                                                                                                                                                                                                                            DefaultRopstenGenesisBlock returns the Ropsten network genesis block.

                                                                                                                                                                                                                                                            func DefaultYoloV2GenesisBlock

                                                                                                                                                                                                                                                            func DefaultYoloV2GenesisBlock() *Genesis

                                                                                                                                                                                                                                                            func DeveloperGenesisBlock

                                                                                                                                                                                                                                                            func DeveloperGenesisBlock(period uint64, faucet common.Address) *Genesis

                                                                                                                                                                                                                                                              DeveloperGenesisBlock returns the 'geth --dev' genesis block.

                                                                                                                                                                                                                                                              func (*Genesis) Commit

                                                                                                                                                                                                                                                              func (g *Genesis) Commit(db ethdb.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)

                                                                                                                                                                                                                                                                func (*Genesis) MustCommit

                                                                                                                                                                                                                                                                func (g *Genesis) MustCommit(db ethdb.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 ethdb.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

                                                                                                                                                                                                                                                                    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"`
                                                                                                                                                                                                                                                                    	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)

                                                                                                                                                                                                                                                                      func (*GenesisAccount) UnmarshalJSON

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

                                                                                                                                                                                                                                                                      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.

                                                                                                                                                                                                                                                                            HeaderChain is responsible for maintaining the header chain including the header query and updating.

                                                                                                                                                                                                                                                                            The components maintained by headerchain includes: (1) total difficult (2) header (3) block hash -> number mapping (4) canonical number -> hash mapping and (5) head header flag.

                                                                                                                                                                                                                                                                            It is not thread safe either, the encapsulating chain structures should do the necessary mutex locking/unlocking.

                                                                                                                                                                                                                                                                            func NewHeaderChain

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

                                                                                                                                                                                                                                                                              NewHeaderChain creates a new HeaderChain structure. ProcInterrupt points to the parent's interrupt semaphore.

                                                                                                                                                                                                                                                                              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

                                                                                                                                                                                                                                                                                            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) 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. In theory, if header is present in the database, all relative components like td and hash->number should be present too.

                                                                                                                                                                                                                                                                                                        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 in-memory head header marker of the canonical chan as the given header.

                                                                                                                                                                                                                                                                                                            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) ValidateHeaderChain

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

                                                                                                                                                                                                                                                                                                                type Message

                                                                                                                                                                                                                                                                                                                type Message interface {
                                                                                                                                                                                                                                                                                                                	From() common.Address
                                                                                                                                                                                                                                                                                                                	To() *common.Address
                                                                                                                                                                                                                                                                                                                
                                                                                                                                                                                                                                                                                                                	GasPrice() *big.Int
                                                                                                                                                                                                                                                                                                                	Gas() uint64
                                                                                                                                                                                                                                                                                                                	Value() *big.Int
                                                                                                                                                                                                                                                                                                                
                                                                                                                                                                                                                                                                                                                	Nonce() uint64
                                                                                                                                                                                                                                                                                                                	CheckNonce() bool
                                                                                                                                                                                                                                                                                                                	Data() []byte
                                                                                                                                                                                                                                                                                                                }

                                                                                                                                                                                                                                                                                                                  Message represents a message sent to a contract.

                                                                                                                                                                                                                                                                                                                  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 Prefetcher

                                                                                                                                                                                                                                                                                                                      type Prefetcher interface {
                                                                                                                                                                                                                                                                                                                      	// Prefetch processes the state changes according to the Ethereum 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 *uint32)
                                                                                                                                                                                                                                                                                                                      }

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

                                                                                                                                                                                                                                                                                                                        type Processor

                                                                                                                                                                                                                                                                                                                        type Processor interface {
                                                                                                                                                                                                                                                                                                                        	// Process processes the state changes according to the Ethereum rules by running
                                                                                                                                                                                                                                                                                                                        	// the transaction messages using the statedb and applying any rewards to both
                                                                                                                                                                                                                                                                                                                        	// the processor (coinbase) and any included uncles.
                                                                                                                                                                                                                                                                                                                        	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.

                                                                                                                                                                                                                                                                                                                          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 Ethereum 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
                                                                                                                                                                                                                                                                                                                                  }

                                                                                                                                                                                                                                                                                                                                    The State Transitioning Model

                                                                                                                                                                                                                                                                                                                                    A state transition is a change made when a transaction is applied to the current world state The state transitioning model does all the necessary work to work out a valid new state root.

                                                                                                                                                                                                                                                                                                                                    1) Nonce handling 2) Pre pay gas 3) Create a new state object if the recipient is \0*32 4) Value transfer == If contract creation ==

                                                                                                                                                                                                                                                                                                                                    4a) Attempt to run transaction data
                                                                                                                                                                                                                                                                                                                                    4b) If valid, use result as code for the new state object
                                                                                                                                                                                                                                                                                                                                    

                                                                                                                                                                                                                                                                                                                                    == end == 5) Run Script section 6) Derive new state root

                                                                                                                                                                                                                                                                                                                                    func NewStateTransition

                                                                                                                                                                                                                                                                                                                                    func NewStateTransition(evm *vm.EVM, msg Message, gp *GasPool) *StateTransition

                                                                                                                                                                                                                                                                                                                                      NewStateTransition initialises and returns a new state transition object.

                                                                                                                                                                                                                                                                                                                                      func (*StateTransition) TransitionDb

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

                                                                                                                                                                                                                                                                                                                                        TransitionDb will transition the state by applying the current message and returning the evm execution result with following fields.

                                                                                                                                                                                                                                                                                                                                        - used gas:

                                                                                                                                                                                                                                                                                                                                        total gas used (including gas being refunded)
                                                                                                                                                                                                                                                                                                                                        

                                                                                                                                                                                                                                                                                                                                        - returndata:

                                                                                                                                                                                                                                                                                                                                        the returned data from evm
                                                                                                                                                                                                                                                                                                                                        

                                                                                                                                                                                                                                                                                                                                        - concrete execution error:

                                                                                                                                                                                                                                                                                                                                        various **EVM** error which aborts the execution,
                                                                                                                                                                                                                                                                                                                                        e.g. ErrOutOfGas, ErrExecutionReverted
                                                                                                                                                                                                                                                                                                                                        

                                                                                                                                                                                                                                                                                                                                        However if any consensus issue encountered, return the error directly with nil evm execution result.

                                                                                                                                                                                                                                                                                                                                        type TxPool

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

                                                                                                                                                                                                                                                                                                                                          TxPool contains all currently known transactions. Transactions enter the pool when they are received from the network or submitted locally. They exit the pool when they are included in the blockchain.

                                                                                                                                                                                                                                                                                                                                          The pool separates processable transactions (which can be applied to the current state) and future transactions. Transactions move between those two states over time as they are received and processed.

                                                                                                                                                                                                                                                                                                                                          func NewTxPool

                                                                                                                                                                                                                                                                                                                                          func NewTxPool(config TxPoolConfig, chainconfig *params.ChainConfig, chain blockChain) *TxPool

                                                                                                                                                                                                                                                                                                                                            NewTxPool creates a new transaction pool to gather, sort and filter inbound transactions from the network.

                                                                                                                                                                                                                                                                                                                                            func (*TxPool) AddLocal

                                                                                                                                                                                                                                                                                                                                            func (pool *TxPool) AddLocal(tx *types.Transaction) error

                                                                                                                                                                                                                                                                                                                                              AddLocal enqueues a single local transaction into the pool if it is valid. This is a convenience wrapper aroundd AddLocals.

                                                                                                                                                                                                                                                                                                                                              func (*TxPool) AddLocals

                                                                                                                                                                                                                                                                                                                                              func (pool *TxPool) AddLocals(txs []*types.Transaction) []error

                                                                                                                                                                                                                                                                                                                                                AddLocals enqueues a batch of transactions into the pool if they are valid, marking the senders as a local ones, ensuring they go around the local pricing constraints.

                                                                                                                                                                                                                                                                                                                                                This method is used to add transactions from the RPC API and performs synchronous pool reorganization and event propagation.

                                                                                                                                                                                                                                                                                                                                                func (*TxPool) AddRemote

                                                                                                                                                                                                                                                                                                                                                func (pool *TxPool) AddRemote(tx *types.Transaction) error

                                                                                                                                                                                                                                                                                                                                                  AddRemote enqueues a single transaction into the pool if it is valid. This is a convenience wrapper around AddRemotes.

                                                                                                                                                                                                                                                                                                                                                  Deprecated: use AddRemotes

                                                                                                                                                                                                                                                                                                                                                  func (*TxPool) AddRemotes

                                                                                                                                                                                                                                                                                                                                                  func (pool *TxPool) AddRemotes(txs []*types.Transaction) []error

                                                                                                                                                                                                                                                                                                                                                    AddRemotes enqueues a batch of transactions into the pool if they are valid. If the senders are not among the locally tracked ones, full pricing constraints will apply.

                                                                                                                                                                                                                                                                                                                                                    This method is used to add transactions from the p2p network and does not wait for pool reorganization and internal event propagation.

                                                                                                                                                                                                                                                                                                                                                    func (*TxPool) AddRemotesSync

                                                                                                                                                                                                                                                                                                                                                    func (pool *TxPool) AddRemotesSync(txs []*types.Transaction) []error

                                                                                                                                                                                                                                                                                                                                                      This is like AddRemotes, but waits for pool reorganization. Tests use this method.

                                                                                                                                                                                                                                                                                                                                                      func (*TxPool) Content

                                                                                                                                                                                                                                                                                                                                                      func (pool *TxPool) Content() (map[common.Address]types.Transactions, map[common.Address]types.Transactions)

                                                                                                                                                                                                                                                                                                                                                        Content retrieves the data content of the transaction pool, returning all the pending as well as queued transactions, grouped by account and sorted by nonce.

                                                                                                                                                                                                                                                                                                                                                        func (*TxPool) GasPrice

                                                                                                                                                                                                                                                                                                                                                        func (pool *TxPool) GasPrice() *big.Int

                                                                                                                                                                                                                                                                                                                                                          GasPrice returns the current gas price enforced by the transaction pool.

                                                                                                                                                                                                                                                                                                                                                          func (*TxPool) Get

                                                                                                                                                                                                                                                                                                                                                          func (pool *TxPool) Get(hash common.Hash) *types.Transaction

                                                                                                                                                                                                                                                                                                                                                            Get returns a transaction if it is contained in the pool and nil otherwise.

                                                                                                                                                                                                                                                                                                                                                            func (*TxPool) Has

                                                                                                                                                                                                                                                                                                                                                            func (pool *TxPool) Has(hash common.Hash) bool

                                                                                                                                                                                                                                                                                                                                                              Has returns an indicator whether txpool has a transaction cached with the given hash.

                                                                                                                                                                                                                                                                                                                                                              func (*TxPool) Locals

                                                                                                                                                                                                                                                                                                                                                              func (pool *TxPool) Locals() []common.Address

                                                                                                                                                                                                                                                                                                                                                                Locals retrieves the accounts currently considered local by the pool.

                                                                                                                                                                                                                                                                                                                                                                func (*TxPool) Nonce

                                                                                                                                                                                                                                                                                                                                                                func (pool *TxPool) Nonce(addr common.Address) uint64

                                                                                                                                                                                                                                                                                                                                                                  Nonce returns the next nonce of an account, with all transactions executable by the pool already applied on top.

                                                                                                                                                                                                                                                                                                                                                                  func (*TxPool) Pending

                                                                                                                                                                                                                                                                                                                                                                  func (pool *TxPool) Pending() (map[common.Address]types.Transactions, error)

                                                                                                                                                                                                                                                                                                                                                                    Pending retrieves all currently processable transactions, grouped by origin account and sorted by nonce. The returned transaction set is a copy and can be freely modified by calling code.

                                                                                                                                                                                                                                                                                                                                                                    func (*TxPool) SetGasPrice

                                                                                                                                                                                                                                                                                                                                                                    func (pool *TxPool) SetGasPrice(price *big.Int)

                                                                                                                                                                                                                                                                                                                                                                      SetGasPrice updates the minimum price required by the transaction pool for a new transaction, and drops all transactions below this threshold.

                                                                                                                                                                                                                                                                                                                                                                      func (*TxPool) Stats

                                                                                                                                                                                                                                                                                                                                                                      func (pool *TxPool) Stats() (int, int)

                                                                                                                                                                                                                                                                                                                                                                        Stats retrieves the current pool stats, namely the number of pending and the number of queued (non-executable) transactions.

                                                                                                                                                                                                                                                                                                                                                                        func (*TxPool) Status

                                                                                                                                                                                                                                                                                                                                                                        func (pool *TxPool) Status(hashes []common.Hash) []TxStatus

                                                                                                                                                                                                                                                                                                                                                                          Status returns the status (unknown/pending/queued) of a batch of transactions identified by their hashes.

                                                                                                                                                                                                                                                                                                                                                                          func (*TxPool) Stop

                                                                                                                                                                                                                                                                                                                                                                          func (pool *TxPool) Stop()

                                                                                                                                                                                                                                                                                                                                                                            Stop terminates the transaction pool.

                                                                                                                                                                                                                                                                                                                                                                            func (*TxPool) SubscribeNewTxsEvent

                                                                                                                                                                                                                                                                                                                                                                            func (pool *TxPool) SubscribeNewTxsEvent(ch chan<- NewTxsEvent) event.Subscription

                                                                                                                                                                                                                                                                                                                                                                              SubscribeNewTxsEvent registers a subscription of NewTxsEvent and starts sending event to the given channel.

                                                                                                                                                                                                                                                                                                                                                                              type TxPoolConfig

                                                                                                                                                                                                                                                                                                                                                                              type TxPoolConfig struct {
                                                                                                                                                                                                                                                                                                                                                                              	Locals    []common.Address // Addresses that should be treated by default as local
                                                                                                                                                                                                                                                                                                                                                                              	NoLocals  bool             // Whether local transaction handling should be disabled
                                                                                                                                                                                                                                                                                                                                                                              	Journal   string           // Journal of local transactions to survive node restarts
                                                                                                                                                                                                                                                                                                                                                                              	Rejournal time.Duration    // Time interval to regenerate the local transaction journal
                                                                                                                                                                                                                                                                                                                                                                              
                                                                                                                                                                                                                                                                                                                                                                              	PriceLimit uint64 // Minimum gas price to enforce for acceptance into the pool
                                                                                                                                                                                                                                                                                                                                                                              	PriceBump  uint64 // Minimum price bump percentage to replace an already existing transaction (nonce)
                                                                                                                                                                                                                                                                                                                                                                              
                                                                                                                                                                                                                                                                                                                                                                              	AccountSlots uint64 // Number of executable transaction slots guaranteed per account
                                                                                                                                                                                                                                                                                                                                                                              	GlobalSlots  uint64 // Maximum number of executable transaction slots for all accounts
                                                                                                                                                                                                                                                                                                                                                                              	AccountQueue uint64 // Maximum number of non-executable transaction slots permitted per account
                                                                                                                                                                                                                                                                                                                                                                              	GlobalQueue  uint64 // Maximum number of non-executable transaction slots for all accounts
                                                                                                                                                                                                                                                                                                                                                                              
                                                                                                                                                                                                                                                                                                                                                                              	Lifetime time.Duration // Maximum amount of time non-executable transaction are queued
                                                                                                                                                                                                                                                                                                                                                                              }

                                                                                                                                                                                                                                                                                                                                                                                TxPoolConfig are the configuration parameters of the transaction pool.

                                                                                                                                                                                                                                                                                                                                                                                type TxStatus

                                                                                                                                                                                                                                                                                                                                                                                type TxStatus uint

                                                                                                                                                                                                                                                                                                                                                                                  TxStatus is the current status of a transaction as seen by the pool.

                                                                                                                                                                                                                                                                                                                                                                                  const (
                                                                                                                                                                                                                                                                                                                                                                                  	TxStatusUnknown TxStatus = iota
                                                                                                                                                                                                                                                                                                                                                                                  	TxStatusQueued
                                                                                                                                                                                                                                                                                                                                                                                  	TxStatusPending
                                                                                                                                                                                                                                                                                                                                                                                  	TxStatusIncluded
                                                                                                                                                                                                                                                                                                                                                                                  )

                                                                                                                                                                                                                                                                                                                                                                                  type UpdateHeadBlocksCallback

                                                                                                                                                                                                                                                                                                                                                                                  type UpdateHeadBlocksCallback func(ethdb.KeyValueWriter, *types.Header) (uint64, 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
                                                                                                                                                                                                                                                                                                                                                                                        )

                                                                                                                                                                                                                                                                                                                                                                                        Directories

                                                                                                                                                                                                                                                                                                                                                                                        Path Synopsis
                                                                                                                                                                                                                                                                                                                                                                                        Provides support for dealing with EVM assembly instructions (e.g., disassembling them).
                                                                                                                                                                                                                                                                                                                                                                                        Provides support for dealing with EVM 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.ethereum.org/EIPS/eip-2124).
                                                                                                                                                                                                                                                                                                                                                                                        Package forkid implements EIP-2124 (https://eips.ethereum.org/EIPS/eip-2124).
                                                                                                                                                                                                                                                                                                                                                                                        Package rawdb contains a collection of low level database accessors.
                                                                                                                                                                                                                                                                                                                                                                                        Package rawdb contains a collection of low level database accessors.
                                                                                                                                                                                                                                                                                                                                                                                        Package state provides a caching layer atop the Ethereum state trie.
                                                                                                                                                                                                                                                                                                                                                                                        Package state provides a caching layer atop the Ethereum state trie.
                                                                                                                                                                                                                                                                                                                                                                                        snapshot
                                                                                                                                                                                                                                                                                                                                                                                        Package snapshot implements a journalled, dynamic state dump.
                                                                                                                                                                                                                                                                                                                                                                                        Package snapshot implements a journalled, dynamic state dump.
                                                                                                                                                                                                                                                                                                                                                                                        Package types contains data types related to Ethereum consensus.
                                                                                                                                                                                                                                                                                                                                                                                        Package types contains data types related to Ethereum consensus.
                                                                                                                                                                                                                                                                                                                                                                                        vm
                                                                                                                                                                                                                                                                                                                                                                                        Package vm implements the Ethereum Virtual Machine.
                                                                                                                                                                                                                                                                                                                                                                                        Package vm implements the Ethereum Virtual Machine.
                                                                                                                                                                                                                                                                                                                                                                                        runtime
                                                                                                                                                                                                                                                                                                                                                                                        Package runtime provides a basic execution model for executing EVM code.
                                                                                                                                                                                                                                                                                                                                                                                        Package runtime provides a basic execution model for executing EVM code.