Documentation

Overview

    Package core implements the Ethereum consensus protocol.

    Index

    Examples

    Constants

    View Source
    const (
    
    	// BlockChainVersion ensures that an incompatible database forces a resync from scratch.
    	BlockChainVersion = 3
    )

    Variables

    View Source
    var (
    
    	// Chain index prefixes (use `i` + single byte to avoid mixing data types).
    	BloomBitsIndexPrefix = []byte("iB") // BloomBitsIndexPrefix is the data table of a chain indexer to track its progress
    
    	ErrChainConfigNotFound = errors.New("ChainConfig not found") // general config not found error
    
    )
    View Source
    var (
    	// ErrKnownBlock is returned when a block to import is already known locally.
    	ErrKnownBlock = errors.New("block already known")
    
    	// ErrGasLimitReached is returned by the gas pool if the amount of gas required
    	// by a transaction is higher than what's left in the block.
    	ErrGasLimitReached = errors.New("gas limit reached")
    
    	// ErrBlacklistedHash is returned if a block to import is on the blacklist.
    	ErrBlacklistedHash = errors.New("blacklisted hash")
    
    	// 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")
    	ErrDelayTooHigh = errors.New("Chain time values are not right!")
    )
    View Source
    var (
    	// ErrInvalidSender is returned if the transaction contains an invalid signature.
    	ErrInvalidSender = errors.New("invalid sender")
    
    	// 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")
    
    	// 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")
    
    	// ErrInsufficientFunds is returned if the total cost of executing a transaction
    	// is higher than the balance of the user's account.
    	ErrInsufficientFunds = errors.New("insufficient funds for gas * price + value")
    
    	// ErrIntrinsicGas is returned if the transaction is specified to use less gas
    	// than required to start the invocation.
    	ErrIntrinsicGas = errors.New("intrinsic gas too low")
    
    	// 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 noone 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 (
      	Big0 = big.NewInt(0)
      )
      View Source
      var BlockReward *big.Int = new(big.Int).Mul(big.NewInt(314), big.NewInt(1e+18))
      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.

        View Source
        var DevReward *big.Int = new(big.Int).Mul(big.NewInt(14), big.NewInt(1e+18))
        View Source
        var (
        	ErrNoGenesis = errors.New("Genesis not found in chain")
        )
        View Source
        var NMBlockReward *big.Int = new(big.Int).Mul(big.NewInt(0), big.NewInt(1e+18))
        View Source
        var NewBlockReward *big.Int = new(big.Int).Mul(big.NewInt(250), big.NewInt(1e+18))
        View Source
        var QTBlockReward *big.Int = new(big.Int).Mul(big.NewInt(50), big.NewInt(1e+18))
        View Source
        var UBIReward *big.Int = new(big.Int).Mul(big.NewInt(50), big.NewInt(1e+18))

        Functions

        func ApplyMessage

        func ApplyMessage(evm *vm.EVM, msg Message, gp *GasPool) ([]byte, *big.Int, bool, 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 ApplyTransaction

          func ApplyTransaction(config *params.ChainConfig, bc *BlockChain, author *common.Address, gp *GasPool, statedb *state.StateDB, header *types.Header, tx *types.Transaction, usedGas *big.Int, cfg vm.Config) (*types.Receipt, *big.Int, 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) *big.Int

              CalcGasLimit computes the gas limit of the next block after parent. The result may be modified by the caller. This is miner strategy, not consensus protocol.

              func CanTransfer

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

                CanTransfer checks wether 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 DeleteBlock

                func DeleteBlock(db DatabaseDeleter, hash common.Hash, number uint64)

                  DeleteBlock removes all block data associated with a hash.

                  func DeleteBlockReceipts

                  func DeleteBlockReceipts(db DatabaseDeleter, hash common.Hash, number uint64)

                    DeleteBlockReceipts removes all receipt data associated with a block hash.

                    func DeleteBody

                    func DeleteBody(db DatabaseDeleter, hash common.Hash, number uint64)

                      DeleteBody removes all block body data associated with a hash.

                      func DeleteCanonicalHash

                      func DeleteCanonicalHash(db DatabaseDeleter, number uint64)

                        DeleteCanonicalHash removes the number to hash canonical mapping.

                        func DeleteHeader

                        func DeleteHeader(db DatabaseDeleter, hash common.Hash, number uint64)

                          DeleteHeader removes all block header data associated with a hash.

                          func DeleteTd

                          func DeleteTd(db DatabaseDeleter, hash common.Hash, number uint64)

                            DeleteTd removes all block total difficulty data associated with a hash.

                            func DeleteTxLookupEntry

                            func DeleteTxLookupEntry(db DatabaseDeleter, hash common.Hash)

                              DeleteTxLookupEntry removes all transaction data associated with a hash.

                              func FindCommonAncestor

                              func FindCommonAncestor(db DatabaseReader, a, b *types.Header) *types.Header

                                FindCommonAncestor returns the last common ancestor of two block headers

                                func GenerateChain

                                func GenerateChain(config *params.ChainConfig, parent *types.Block, 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 GetBlock

                                    func GetBlock(db DatabaseReader, hash common.Hash, number uint64) *types.Block

                                      GetBlock retrieves an entire block corresponding to the hash, assembling it back from the stored header and body. If either the header or body could not be retrieved nil is returned.

                                      Note, due to concurrent download of header and block body the header and thus canonical hash can be stored in the database but the body data not (yet).

                                      func GetBlockChainVersion

                                      func GetBlockChainVersion(db DatabaseReader) int

                                        GetBlockChainVersion reads the version number from db.

                                        func GetBlockNumber

                                        func GetBlockNumber(db DatabaseReader, hash common.Hash) uint64

                                          GetBlockNumber returns the block number assigned to a block hash if the corresponding header is present in the database

                                          func GetBlockReceipts

                                          func GetBlockReceipts(db DatabaseReader, hash common.Hash, number uint64) types.Receipts

                                            GetBlockReceipts retrieves the receipts generated by the transactions included in a block given by its hash.

                                            func GetBloomBits

                                            func GetBloomBits(db DatabaseReader, bit uint, section uint64, head common.Hash) ([]byte, error)

                                              GetBloomBits retrieves the compressed bloom bit vector belonging to the given section and bit index from the.

                                              func GetBody

                                              func GetBody(db DatabaseReader, hash common.Hash, number uint64) *types.Body

                                                GetBody retrieves the block body (transactons, uncles) corresponding to the hash, nil if none found.

                                                func GetBodyRLP

                                                func GetBodyRLP(db DatabaseReader, hash common.Hash, number uint64) rlp.RawValue

                                                  GetBodyRLP retrieves the block body (transactions and uncles) in RLP encoding.

                                                  func GetCanonicalHash

                                                  func GetCanonicalHash(db DatabaseReader, number uint64) common.Hash

                                                    GetCanonicalHash retrieves a hash assigned to a canonical block number.

                                                    func GetChainConfig

                                                    func GetChainConfig(db DatabaseReader, hash common.Hash) (*params.ChainConfig, error)

                                                      GetChainConfig will fetch the network settings based on the given hash.

                                                      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 GetHeadBlockHash

                                                        func GetHeadBlockHash(db DatabaseReader) common.Hash

                                                          GetHeadBlockHash retrieves the hash of the current canonical head block.

                                                          func GetHeadFastBlockHash

                                                          func GetHeadFastBlockHash(db DatabaseReader) common.Hash

                                                            GetHeadFastBlockHash retrieves the hash of the current canonical head block during fast synchronization. The difference between this and GetHeadBlockHash is that whereas the last block hash is only updated upon a full block import, the last fast hash is updated when importing pre-processed blocks.

                                                            func GetHeadHeaderHash

                                                            func GetHeadHeaderHash(db DatabaseReader) common.Hash

                                                              GetHeadHeaderHash retrieves the hash of the current canonical head block's header. The difference between this and GetHeadBlockHash is that whereas the last block hash is only updated upon a full block import, the last header hash is updated already at header import, allowing head tracking for the light synchronization mechanism.

                                                              func GetHeader

                                                              func GetHeader(db DatabaseReader, hash common.Hash, number uint64) *types.Header

                                                                GetHeader retrieves the block header corresponding to the hash, nil if none found.

                                                                func GetHeaderRLP

                                                                func GetHeaderRLP(db DatabaseReader, hash common.Hash, number uint64) rlp.RawValue

                                                                  GetHeaderRLP retrieves a block header in its raw RLP database encoding, or nil if the header's not found.

                                                                  func GetReceipt

                                                                  func GetReceipt(db DatabaseReader, hash common.Hash) (*types.Receipt, common.Hash, uint64, uint64)

                                                                    GetReceipt retrieves a specific transaction receipt from the database, along with its added positional metadata.

                                                                    func GetTd

                                                                    func GetTd(db DatabaseReader, hash common.Hash, number uint64) *big.Int

                                                                      GetTd retrieves a block's total difficulty corresponding to the hash, nil if none found.

                                                                      func GetTransaction

                                                                      func GetTransaction(db DatabaseReader, hash common.Hash) (*types.Transaction, common.Hash, uint64, uint64)

                                                                        GetTransaction retrieves a specific transaction from the database, along with its added positional metadata.

                                                                        func GetTxLookupEntry

                                                                        func GetTxLookupEntry(db DatabaseReader, hash common.Hash) (common.Hash, uint64, uint64)

                                                                          GetTxLookupEntry retrieves the positional metadata associated with a transaction hash to allow retrieving the transaction or receipt by hash.

                                                                          func IntrinsicGas

                                                                          func IntrinsicGas(data []byte, contractCreation, homestead bool) *big.Int

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

                                                                            TODO convert to uint64

                                                                            func NewEVMContext

                                                                            func NewEVMContext(msg Message, header *types.Header, chain ChainContext, author *common.Address) vm.Context

                                                                              NewEVMContext creates a new context for use in the EVM.

                                                                              func PreimageTable

                                                                              func PreimageTable(db ethdb.Database) ethdb.Database

                                                                                PreimageTable returns a Database instance with the key prefix for preimage entries.

                                                                                func SetReceiptsData

                                                                                func SetReceiptsData(config *params.ChainConfig, block *types.Block, receipts types.Receipts)

                                                                                  SetReceiptsData computes all the non-consensus fields of the receipts

                                                                                  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

                                                                                      func WriteBlock

                                                                                      func WriteBlock(db ethdb.Putter, block *types.Block) error

                                                                                        WriteBlock serializes a block into the database, header and body separately.

                                                                                        func WriteBlockChainVersion

                                                                                        func WriteBlockChainVersion(db ethdb.Putter, vsn int)

                                                                                          WriteBlockChainVersion writes vsn as the version number to db.

                                                                                          func WriteBlockReceipts

                                                                                          func WriteBlockReceipts(db ethdb.Putter, hash common.Hash, number uint64, receipts types.Receipts) error

                                                                                            WriteBlockReceipts stores all the transaction receipts belonging to a block as a single receipt slice. This is used during chain reorganisations for rescheduling dropped transactions.

                                                                                            func WriteBloomBits

                                                                                            func WriteBloomBits(db ethdb.Putter, bit uint, section uint64, head common.Hash, bits []byte)

                                                                                              WriteBloomBits writes the compressed bloom bits vector belonging to the given section and bit index.

                                                                                              func WriteBody

                                                                                              func WriteBody(db ethdb.Putter, hash common.Hash, number uint64, body *types.Body) error

                                                                                                WriteBody serializes the body of a block into the database.

                                                                                                func WriteBodyRLP

                                                                                                func WriteBodyRLP(db ethdb.Putter, hash common.Hash, number uint64, rlp rlp.RawValue) error

                                                                                                  WriteBodyRLP writes a serialized body of a block into the database.

                                                                                                  func WriteCanonicalHash

                                                                                                  func WriteCanonicalHash(db ethdb.Putter, hash common.Hash, number uint64) error

                                                                                                    WriteCanonicalHash stores the canonical hash for the given block number.

                                                                                                    func WriteChainConfig

                                                                                                    func WriteChainConfig(db ethdb.Putter, hash common.Hash, cfg *params.ChainConfig) error

                                                                                                      WriteChainConfig writes the chain config settings to the database.

                                                                                                      func WriteHeadBlockHash

                                                                                                      func WriteHeadBlockHash(db ethdb.Putter, hash common.Hash) error

                                                                                                        WriteHeadBlockHash stores the head block's hash.

                                                                                                        func WriteHeadFastBlockHash

                                                                                                        func WriteHeadFastBlockHash(db ethdb.Putter, hash common.Hash) error

                                                                                                          WriteHeadFastBlockHash stores the fast head block's hash.

                                                                                                          func WriteHeadHeaderHash

                                                                                                          func WriteHeadHeaderHash(db ethdb.Putter, hash common.Hash) error

                                                                                                            WriteHeadHeaderHash stores the head header's hash.

                                                                                                            func WriteHeader

                                                                                                            func WriteHeader(db ethdb.Putter, header *types.Header) error

                                                                                                              WriteHeader serializes a block header into the database.

                                                                                                              func WritePreimages

                                                                                                              func WritePreimages(db ethdb.Database, number uint64, preimages map[common.Hash][]byte) error

                                                                                                                WritePreimages writes the provided set of preimages to the database. `number` is the current block number, and is used for debug messages only.

                                                                                                                func WriteTd

                                                                                                                func WriteTd(db ethdb.Putter, hash common.Hash, number uint64, td *big.Int) error

                                                                                                                  WriteTd serializes the total difficulty of a block into the database.

                                                                                                                  func WriteTxLookupEntries

                                                                                                                  func WriteTxLookupEntries(db ethdb.Putter, block *types.Block) error

                                                                                                                    WriteTxLookupEntries stores a positional metadata for every transaction from a block, enabling hash based transaction and receipt lookups.

                                                                                                                    Types

                                                                                                                    type BadBlockArgs

                                                                                                                    type BadBlockArgs struct {
                                                                                                                    	Hash   common.Hash   `json:"hash"`
                                                                                                                    	Header *types.Header `json:"header"`
                                                                                                                    }

                                                                                                                      BadBlockArgs represents the entries in the list returned when bad blocks are queried.

                                                                                                                      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(chainDb ethdb.Database, config *params.ChainConfig, engine consensus.Engine, vmConfig vm.Config) (*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() ([]BadBlockArgs, error)

                                                                                                                            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 blockchain's chain configuration.

                                                                                                                              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() *big.Int

                                                                                                                                              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) 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) 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) 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) 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) 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) bool

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

                                                                                                                                                                              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) 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) (int, error)

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

                                                                                                                                                                                      func (*BlockChain) LastBlockHash

                                                                                                                                                                                      func (bc *BlockChain) LastBlockHash() common.Hash

                                                                                                                                                                                        LastBlockHash return the hash of the HEAD block.

                                                                                                                                                                                        func (*BlockChain) PostChainEvents

                                                                                                                                                                                        func (bc *BlockChain) PostChainEvents(events []interface{}, logs []*types.Log)

                                                                                                                                                                                          PostChainEvents iterates over the events generated by a chain insertion and posts them into the event feed. TODO: Should not expose PostChainEvents. The chain events should be posted in WriteBlock.

                                                                                                                                                                                          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) Rollback

                                                                                                                                                                                                func (bc *BlockChain) Rollback(chain []common.Hash)

                                                                                                                                                                                                  Rollback is designed to remove a chain of links from the database that aren't certain enough to be valid.

                                                                                                                                                                                                  func (*BlockChain) SetHead

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

                                                                                                                                                                                                    SetHead rewinds the local chain to a new head. In the case of headers, everything above the new head will be deleted and the new one set. In the case of blocks though, the head may be further rewound if block bodies are missing (non-archive nodes after a fast sync).

                                                                                                                                                                                                    func (*BlockChain) SetProcessor

                                                                                                                                                                                                    func (bc *BlockChain) SetProcessor(processor Processor)

                                                                                                                                                                                                      SetProcessor sets the processor required for making state modifications.

                                                                                                                                                                                                      func (*BlockChain) SetValidator

                                                                                                                                                                                                      func (bc *BlockChain) SetValidator(validator Validator)

                                                                                                                                                                                                        SetValidator sets the validator which is used to validate incoming blocks.

                                                                                                                                                                                                        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) Status

                                                                                                                                                                                                            func (bc *BlockChain) Status() (td *big.Int, currentBlock common.Hash, genesisBlock common.Hash)

                                                                                                                                                                                                              Status returns status information about the current chain such as the HEAD Td, the HEAD hash and the hash of the genesis block.

                                                                                                                                                                                                              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) 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) Validator

                                                                                                                                                                                                                          func (bc *BlockChain) Validator() Validator

                                                                                                                                                                                                                            Validator returns the current validator.

                                                                                                                                                                                                                            func (*BlockChain) WriteBlockAndState

                                                                                                                                                                                                                            func (bc *BlockChain) WriteBlockAndState(block *types.Block, receipts []*types.Receipt, state *state.StateDB) (status WriteStatus, err error)

                                                                                                                                                                                                                              WriteBlock writes the block to the chain.

                                                                                                                                                                                                                              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) 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) 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) SetExtra

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

                                                                                                                                                                                                                                                SetExtra sets the extra data 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 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, parent *types.Block, statedb *state.StateDB, receipts types.Receipts, usedGas *big.Int) 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 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 ChainEventLoop 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, 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) AddChildIndexer

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

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

                                                                                                                                                                                                                                                                  func (*ChainIndexer) AddKnownSectionHead

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

                                                                                                                                                                                                                                                                    AddKnownSectionHead marks a new section head as known/processed if it is newer than the already known best section head

                                                                                                                                                                                                                                                                    func (*ChainIndexer) Close

                                                                                                                                                                                                                                                                    func (c *ChainIndexer) Close() error

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

                                                                                                                                                                                                                                                                      func (*ChainIndexer) SectionHead

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

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

                                                                                                                                                                                                                                                                        func (*ChainIndexer) Sections

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

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

                                                                                                                                                                                                                                                                          func (*ChainIndexer) Start

                                                                                                                                                                                                                                                                          func (c *ChainIndexer) Start(chain ChainIndexerChain)

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

                                                                                                                                                                                                                                                                            type ChainIndexerBackend

                                                                                                                                                                                                                                                                            type ChainIndexerBackend interface {
                                                                                                                                                                                                                                                                            	// Reset initiates the processing of a new chain segment, potentially terminating
                                                                                                                                                                                                                                                                            	// any partially completed operations (in case of a reorg).
                                                                                                                                                                                                                                                                            	Reset(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(header *types.Header)
                                                                                                                                                                                                                                                                            
                                                                                                                                                                                                                                                                            	// Commit finalizes the section metadata and stores it into the database.
                                                                                                                                                                                                                                                                            	Commit() error
                                                                                                                                                                                                                                                                            }

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

                                                                                                                                                                                                                                                                              type ChainIndexerChain

                                                                                                                                                                                                                                                                              type ChainIndexerChain interface {
                                                                                                                                                                                                                                                                              	// CurrentHeader retrieves the latest locally known header.
                                                                                                                                                                                                                                                                              	CurrentHeader() *types.Header
                                                                                                                                                                                                                                                                              
                                                                                                                                                                                                                                                                              	// SubscribeChainEvent subscribes to new head header notifications.
                                                                                                                                                                                                                                                                              	SubscribeChainEvent(ch chan<- ChainEvent) event.Subscription
                                                                                                                                                                                                                                                                              }

                                                                                                                                                                                                                                                                                ChainIndexerChain interface is used for connecting the indexer to a blockchain

                                                                                                                                                                                                                                                                                type ChainSideEvent

                                                                                                                                                                                                                                                                                type ChainSideEvent struct {
                                                                                                                                                                                                                                                                                	Block *types.Block
                                                                                                                                                                                                                                                                                }

                                                                                                                                                                                                                                                                                type DatabaseDeleter

                                                                                                                                                                                                                                                                                type DatabaseDeleter interface {
                                                                                                                                                                                                                                                                                	Delete(key []byte) error
                                                                                                                                                                                                                                                                                }

                                                                                                                                                                                                                                                                                  DatabaseDeleter wraps the Delete method of a backing data store.

                                                                                                                                                                                                                                                                                  type DatabaseReader

                                                                                                                                                                                                                                                                                  type DatabaseReader interface {
                                                                                                                                                                                                                                                                                  	Get(key []byte) (value []byte, err error)
                                                                                                                                                                                                                                                                                  }

                                                                                                                                                                                                                                                                                    DatabaseReader wraps the Get method of a backing data store.

                                                                                                                                                                                                                                                                                    type DeleteCallback

                                                                                                                                                                                                                                                                                    type DeleteCallback func(common.Hash, uint64)

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

                                                                                                                                                                                                                                                                                      type GasPool

                                                                                                                                                                                                                                                                                      type GasPool big.Int

                                                                                                                                                                                                                                                                                        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 *big.Int) *GasPool

                                                                                                                                                                                                                                                                                          AddGas makes gas available for execution.

                                                                                                                                                                                                                                                                                          func (*GasPool) String

                                                                                                                                                                                                                                                                                          func (gp *GasPool) String() string

                                                                                                                                                                                                                                                                                          func (*GasPool) SubGas

                                                                                                                                                                                                                                                                                          func (gp *GasPool) SubGas(amount *big.Int) 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 DefaultRinkebyGenesisBlock

                                                                                                                                                                                                                                                                                                func DefaultRinkebyGenesisBlock() *Genesis

                                                                                                                                                                                                                                                                                                  DefaultRinkebyGenesisBlock returns the Rinkeby network genesis block.

                                                                                                                                                                                                                                                                                                  func DefaultTestnetGenesisBlock

                                                                                                                                                                                                                                                                                                  func DefaultTestnetGenesisBlock() *Genesis

                                                                                                                                                                                                                                                                                                    DefaultTestnetGenesisBlock returns the Ropsten network genesis block.

                                                                                                                                                                                                                                                                                                    func DeveloperGenesisBlock

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

                                                                                                                                                                                                                                                                                                      DeveloperGenesisBlock returns the 'gmc --dev' genesis block. Note, this must be seeded with the

                                                                                                                                                                                                                                                                                                      func MusicoinGenesisBlock

                                                                                                                                                                                                                                                                                                      func MusicoinGenesisBlock() *Genesis

                                                                                                                                                                                                                                                                                                        MusicoinGenesisBlock returns the Musicoin main net 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() (*types.Block, *state.StateDB)

                                                                                                                                                                                                                                                                                                              ToBlock creates the block and state of a genesis specification.

                                                                                                                                                                                                                                                                                                              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. 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.

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

                                                                                                                                                                                                                                                                                                                        func (*HeaderChain) Config

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

                                                                                                                                                                                                                                                                                                                          Config retrieves the header chain's chain configuration.

                                                                                                                                                                                                                                                                                                                          func (*HeaderChain) CurrentHeader

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

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

                                                                                                                                                                                                                                                                                                                            func (*HeaderChain) Engine

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

                                                                                                                                                                                                                                                                                                                              Engine retrieves the header chain's consensus engine.

                                                                                                                                                                                                                                                                                                                              func (*HeaderChain) 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) 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.

                                                                                                                                                                                                                                                                                                                                                func (*HeaderChain) InsertHeaderChain

                                                                                                                                                                                                                                                                                                                                                func (hc *HeaderChain) InsertHeaderChain(chain []*types.Header, writeHeader WhCallback, start time.Time) (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 verfy nonces, as well as because nonces can be verified sparsely, not needing to check each.

                                                                                                                                                                                                                                                                                                                                                  func (*HeaderChain) SetCurrentHeader

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

                                                                                                                                                                                                                                                                                                                                                    SetCurrentHeader sets the current head header of the canonical chain.

                                                                                                                                                                                                                                                                                                                                                    func (*HeaderChain) SetGenesis

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

                                                                                                                                                                                                                                                                                                                                                      SetGenesis sets a new genesis block header for the chain

                                                                                                                                                                                                                                                                                                                                                      func (*HeaderChain) SetHead

                                                                                                                                                                                                                                                                                                                                                      func (hc *HeaderChain) SetHead(head uint64, delFn DeleteCallback)

                                                                                                                                                                                                                                                                                                                                                        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)

                                                                                                                                                                                                                                                                                                                                                        func (*HeaderChain) WriteHeader

                                                                                                                                                                                                                                                                                                                                                        func (hc *HeaderChain) WriteHeader(header *types.Header) (status WriteStatus, err error)

                                                                                                                                                                                                                                                                                                                                                          WriteHeader writes a header into the local chain, given that its parent is already known. If the total difficulty of the newly inserted header becomes greater than the current known TD, the canonical chain is re-routed.

                                                                                                                                                                                                                                                                                                                                                          Note: This method is not concurrent-safe with inserting blocks simultaneously into the chain, as side effects caused by reorganisations cannot be emulated without the real blocks. Hence, writing headers directly should only be done in two scenarios: pure-header mode of operation (light clients), or properly separated header/block phases (non-archive clients).

                                                                                                                                                                                                                                                                                                                                                          func (*HeaderChain) WriteTd

                                                                                                                                                                                                                                                                                                                                                          func (hc *HeaderChain) WriteTd(hash common.Hash, number uint64, td *big.Int) error

                                                                                                                                                                                                                                                                                                                                                            WriteTd stores a block's total difficulty into the database, also caching it along the way.

                                                                                                                                                                                                                                                                                                                                                            type Message

                                                                                                                                                                                                                                                                                                                                                            type Message interface {
                                                                                                                                                                                                                                                                                                                                                            	From() common.Address
                                                                                                                                                                                                                                                                                                                                                            	//FromFrontier() (common.Address, error)
                                                                                                                                                                                                                                                                                                                                                            	To() *common.Address
                                                                                                                                                                                                                                                                                                                                                            
                                                                                                                                                                                                                                                                                                                                                            	GasPrice() *big.Int
                                                                                                                                                                                                                                                                                                                                                            	Gas() *big.Int
                                                                                                                                                                                                                                                                                                                                                            	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 Pair

                                                                                                                                                                                                                                                                                                                                                                type Pair struct {
                                                                                                                                                                                                                                                                                                                                                                	Key   uint64
                                                                                                                                                                                                                                                                                                                                                                	Value int64
                                                                                                                                                                                                                                                                                                                                                                }

                                                                                                                                                                                                                                                                                                                                                                  A data structure to hold key/value pairs

                                                                                                                                                                                                                                                                                                                                                                  type PairList

                                                                                                                                                                                                                                                                                                                                                                  type PairList []Pair

                                                                                                                                                                                                                                                                                                                                                                    A slice of pairs that implements sort.Interface to sort by values

                                                                                                                                                                                                                                                                                                                                                                    func (PairList) Len

                                                                                                                                                                                                                                                                                                                                                                    func (p PairList) Len() int

                                                                                                                                                                                                                                                                                                                                                                    func (PairList) Less

                                                                                                                                                                                                                                                                                                                                                                    func (p PairList) Less(i, j int) bool

                                                                                                                                                                                                                                                                                                                                                                    func (PairList) Swap

                                                                                                                                                                                                                                                                                                                                                                    func (p PairList) Swap(i, j int)

                                                                                                                                                                                                                                                                                                                                                                    type PendingLogsEvent

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

                                                                                                                                                                                                                                                                                                                                                                      PendingLogsEvent is posted pre mining and notifies of pending logs.

                                                                                                                                                                                                                                                                                                                                                                      type PendingStateEvent

                                                                                                                                                                                                                                                                                                                                                                      type PendingStateEvent struct{}

                                                                                                                                                                                                                                                                                                                                                                        PendingStateEvent is posted pre mining and notifies of pending state changes.

                                                                                                                                                                                                                                                                                                                                                                        type Processor

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

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

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

                                                                                                                                                                                                                                                                                                                                                                          type RemovedLogsEvent

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

                                                                                                                                                                                                                                                                                                                                                                            RemovedLogsEvent is posted when a reorg happens

                                                                                                                                                                                                                                                                                                                                                                            type RemovedTransactionEvent

                                                                                                                                                                                                                                                                                                                                                                            type RemovedTransactionEvent struct{ Txs types.Transactions }

                                                                                                                                                                                                                                                                                                                                                                              RemovedTransactionEvent 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, *big.Int, 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 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() (ret []byte, requiredGas, usedGas *big.Int, failed bool, err error)

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

                                                                                                                                                                                                                                                                                                                                                                                          type TxLookupEntry

                                                                                                                                                                                                                                                                                                                                                                                          type TxLookupEntry struct {
                                                                                                                                                                                                                                                                                                                                                                                          	BlockHash  common.Hash
                                                                                                                                                                                                                                                                                                                                                                                          	BlockIndex uint64
                                                                                                                                                                                                                                                                                                                                                                                          	Index      uint64
                                                                                                                                                                                                                                                                                                                                                                                          }

                                                                                                                                                                                                                                                                                                                                                                                            TxLookupEntry is a positional metadata to help looking up the data content of a transaction or receipt given only its hash.

                                                                                                                                                                                                                                                                                                                                                                                            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 trnsactions from the network.

                                                                                                                                                                                                                                                                                                                                                                                                func (*TxPool) AddLocal

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

                                                                                                                                                                                                                                                                                                                                                                                                  AddLocal enqueues a single transaction into the pool if it is valid, marking the sender as a local one in the mean time, ensuring it goes around the local pricing constraints.

                                                                                                                                                                                                                                                                                                                                                                                                  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 in the mean time, ensuring they go around the local pricing constraints.

                                                                                                                                                                                                                                                                                                                                                                                                    func (*TxPool) AddRemote

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

                                                                                                                                                                                                                                                                                                                                                                                                      AddRemote enqueues a single transaction into the pool if it is valid. If the sender is not among the locally tracked ones, full pricing constraints will apply.

                                                                                                                                                                                                                                                                                                                                                                                                      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.

                                                                                                                                                                                                                                                                                                                                                                                                        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) Pending

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

                                                                                                                                                                                                                                                                                                                                                                                                                Pending retrieves all currently processable transactions, groupped 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) State

                                                                                                                                                                                                                                                                                                                                                                                                                  func (pool *TxPool) State() *state.ManagedState

                                                                                                                                                                                                                                                                                                                                                                                                                    State returns the virtual managed state of the transaction pool.

                                                                                                                                                                                                                                                                                                                                                                                                                    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) SubscribeTxPreEvent

                                                                                                                                                                                                                                                                                                                                                                                                                          func (pool *TxPool) SubscribeTxPreEvent(ch chan<- TxPreEvent) event.Subscription

                                                                                                                                                                                                                                                                                                                                                                                                                            SubscribeTxPreEvent registers a subscription of TxPreEvent and starts sending event to the given channel.

                                                                                                                                                                                                                                                                                                                                                                                                                            type TxPoolConfig

                                                                                                                                                                                                                                                                                                                                                                                                                            type TxPoolConfig struct {
                                                                                                                                                                                                                                                                                                                                                                                                                            	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 // Minimum 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 TxPreEvent

                                                                                                                                                                                                                                                                                                                                                                                                                              type TxPreEvent struct{ Tx *types.Transaction }

                                                                                                                                                                                                                                                                                                                                                                                                                                TxPreEvent is posted when a transaction enters the transaction pool.

                                                                                                                                                                                                                                                                                                                                                                                                                                type TxStatus

                                                                                                                                                                                                                                                                                                                                                                                                                                type TxStatus uint

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

                                                                                                                                                                                                                                                                                                                                                                                                                                  const (
                                                                                                                                                                                                                                                                                                                                                                                                                                  	TxStatusUnknown TxStatus = iota
                                                                                                                                                                                                                                                                                                                                                                                                                                  	TxStatusQueued
                                                                                                                                                                                                                                                                                                                                                                                                                                  	TxStatusPending
                                                                                                                                                                                                                                                                                                                                                                                                                                  	TxStatusIncluded
                                                                                                                                                                                                                                                                                                                                                                                                                                  )

                                                                                                                                                                                                                                                                                                                                                                                                                                  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, parent *types.Block, state *state.StateDB, receipts types.Receipts, usedGas *big.Int) 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 WhCallback

                                                                                                                                                                                                                                                                                                                                                                                                                                    type WhCallback func(*types.Header) error

                                                                                                                                                                                                                                                                                                                                                                                                                                      WhCallback is a callback function for inserting individual headers. A callback is used for two reasons: first, in a LightChain, status should be processed and light chain events sent, while in a BlockChain this is not necessary since chain events are sent after inserting blocks. Second, the header writes should be protected by the parent chain mutex individually.

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