Function NewTxPool

core/tx_pool.go:304–344

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

(config TxPoolConfig, chainconfig *configs.ChainConfig, chain blockChain)

// NewTxPool creates a new transaction pool to gather, sort and filter inbound
// transactions from the network.
func NewTxPool(config TxPoolConfig, chainconfig *configs.ChainConfig, chain blockChain) *TxPool {
	// Sanitize the input to ensure no vulnerable gas prices are set
	config = (&config).sanitize()

	// Create the transaction pool with its initial settings
	pool := &TxPool{
		config:      config,
		chainconfig: chainconfig,
		chain:       chain,
		signer:      types.NewCep1Signer(chainconfig.ChainID),
		pending:     make(map[common.Address]*txList),
		queue:       make(map[common.Address]*txList),
		beats:       make(map[common.Address]time.Time),
		all:         newTxLookup(),
		chainHeadCh: make(chan ChainHeadEvent, chainHeadChanSize),
		gasPrice:    new(big.Int).SetUint64(config.PriceLimit),
	}
	pool.locals = newAccountSet(pool.signer)
	pool.priced = newTxPricedList(pool.all)
	pool.reset(nil, chain.CurrentBlock().Header())

	// If local transactions and journaling is enabled, load from disk
	if !config.NoLocals && config.Journal != "" {
		pool.journal = newTxJournal(config.Journal)

		if err := pool.journal.load(pool.AddLocals); err != nil {
			log.Warn("Failed to load transaction journal", "err", err)
		}
		if err := pool.journal.rotate(pool.local()); err != nil {
			log.Warn("Failed to rotate transaction journal", "err", err)
		}
	}
	// Subscribe events from blockchain
	pool.chainHeadSub = pool.chain.SubscribeChainHeadEvent(pool.chainHeadCh)

	// Start the event loop and return
	pool.wg.Add(1)
	go pool.loop()

	return pool
}

// loop is the transaction pool's main event loop, waiting for and reacting to
// outside blockchain events as well as for various reporting and transaction