Example #1
0
// GetBlock returns the next block available from the transaction pool.
func GetBlock(transactions []blkparser.Tx, lastBlock, lastKeyBlock string) (*blockchain.TrBlock, error) {
	if len(transactions) < 1 {
		return nil, errors.New("no transaction available")
	}

	trlist := blockchain.NewTransactionList(transactions, len(transactions))
	header := blockchain.NewHeader(trlist, lastBlock, lastKeyBlock)
	trblock := blockchain.NewTrBlock(trlist, header)
	return trblock, nil
}
Example #2
0
// Run runs the simulation
func (e *Simulation) Run(onetConf *onet.SimulationConfig) error {
	doneChan := make(chan bool)
	doneCB := func() {
		doneChan <- true
	}
	// FIXME use client instead
	dir := blockchain.GetBlockDir()
	parser, err := blockchain.NewParser(dir, magicNum)
	if err != nil {
		log.Error("Error: Couldn't parse blocks in", dir)
		return err
	}
	transactions, err := parser.Parse(0, e.Blocksize)
	if err != nil {
		log.Error("Error while parsing transactions", err)
		return err
	}

	// FIXME c&p from byzcoin.go
	trlist := blockchain.NewTransactionList(transactions, len(transactions))
	header := blockchain.NewHeader(trlist, "", "")
	trblock := blockchain.NewTrBlock(trlist, header)

	// Here we first setup the N^2 connections with a broadcast protocol
	pi, err := onetConf.Overlay.CreateProtocolOnet("Broadcast", onetConf.Tree)
	if err != nil {
		log.Error(err)
	}
	proto := pi.(*manage.Broadcast)
	// channel to notify we are done
	broadDone := make(chan bool)
	proto.RegisterOnDone(func() {
		broadDone <- true
	})

	// ignore error on purpose: Start always returns nil
	_ = proto.Start()

	// wait
	<-broadDone
	log.Lvl3("Simulation can start!")
	for round := 0; round < e.Rounds; round++ {
		log.Lvl1("Starting round", round)
		p, err := onetConf.Overlay.CreateProtocolOnet("ByzCoinPBFT", onetConf.Tree)
		if err != nil {
			return err
		}
		proto := p.(*Protocol)

		proto.trBlock = trblock
		proto.onDoneCB = doneCB

		r := monitor.NewTimeMeasure("round_pbft")
		err = proto.Start()
		if err != nil {
			log.Error("Couldn't start PrePrepare")
			return err
		}

		// wait for finishing pbft:
		<-doneChan
		r.Record()

		log.Lvl2("Finished round", round)
	}
	return nil
}