Exemplo n.º 1
0
// Run implements sda.Simulation interface
func (e *Simulation) Run(sdaConf *sda.SimulationConfig) error {
	log.Lvl2("Naive Tree Simulation starting with: Rounds=", e.Rounds)
	server := NewNtreeServer(e.Blocksize)
	for round := 0; round < e.Rounds; round++ {
		client := byzcoin.NewClient(server)
		err := client.StartClientSimulation(blockchain.GetBlockDir(), e.Blocksize)
		if err != nil {
			log.Error("ClientSimulation:", err)
		}

		log.Lvl1("Starting round", round)
		// create an empty node
		node := sdaConf.Overlay.NewTreeNodeInstanceFromProtoName(sdaConf.Tree, "ByzCoinNtree")
		// instantiate a byzcoin protocol
		rComplete := monitor.NewTimeMeasure("round")
		pi, err := server.Instantiate(node)
		if err != nil {
			return err
		}
		sdaConf.Overlay.RegisterProtocolInstance(pi)

		nt := pi.(*Ntree)
		// Register when the protocol is finished (all the nodes have finished)
		done := make(chan bool)
		nt.RegisterOnDone(func(sig *NtreeSignature) {
			rComplete.Record()
			log.Lvl3("Done")
			done <- true
		})

		go func() {
			if err := nt.Start(); err != nil {
				log.Error("Couldn't start ntree protocol:", err)
			}
		}()
		// wait for the end
		<-done
		log.Lvl3("Round", round, "finished")

	}
	return nil
}
Exemplo n.º 2
0
// Run implements sda.Simulation interface
func (e *Simulation) Run(sdaConf *sda.SimulationConfig) error {
	log.Lvl2("Simulation starting with: Rounds=", e.Rounds)
	server := NewByzCoinServer(e.Blocksize, e.TimeoutMs, e.Fail)

	pi, err := sdaConf.Overlay.CreateProtocolSDA(sdaConf.Tree, "Broadcast")
	if err != nil {
		return err
	}
	proto, _ := pi.(*manage.Broadcast)
	// channel to notify we are done
	broadDone := make(chan bool)
	proto.RegisterOnDone(func() {
		broadDone <- true
	})
	// ignore error on purpose: Broadcast.Start() always returns nil
	_ = proto.Start()
	// wait
	<-broadDone

	for round := 0; round < e.Rounds; round++ {
		client := NewClient(server)
		err := client.StartClientSimulation(blockchain.GetBlockDir(), e.Blocksize)
		if err != nil {
			log.Error("Error in ClientSimulation:", err)
			return err
		}

		log.Lvl1("Starting round", round)
		// create an empty node
		tni := sdaConf.Overlay.NewTreeNodeInstanceFromProtoName(sdaConf.Tree, "ByzCoin")
		if err != nil {
			return err
		}
		// instantiate a byzcoin protocol
		rComplete := monitor.NewTimeMeasure("round")
		pi, err := server.Instantiate(tni)
		if err != nil {
			return err
		}
		sdaConf.Overlay.RegisterProtocolInstance(pi)

		bz := pi.(*ByzCoin)
		// Register callback for the generation of the signature !
		bz.RegisterOnSignatureDone(func(sig *BlockSignature) {
			rComplete.Record()
			if err := verifyBlockSignature(tni.Suite(), tni.Roster().Aggregate, sig); err != nil {
				log.Error("Round", round, "failed:", err)
			} else {
				log.Lvl2("Round", round, "success")
			}
		})

		// Register when the protocol is finished (all the nodes have finished)
		done := make(chan bool)
		bz.RegisterOnDone(func() {
			done <- true
		})
		if e.Fail > 0 {
			go func() {
				err := bz.startAnnouncementPrepare()
				if err != nil {
					log.Error("Error while starting "+
						"announcment prepare:", err)
				}
			}()
			// do not run bz.startAnnouncementCommit()
		} else {
			go func() {
				if err := bz.Start(); err != nil {
					log.Error("Couldn't start protocol",
						err)
				}
			}()
		}
		// wait for the end
		<-done
		log.Lvl3("Round", round, "finished")

	}
	return nil
}
Exemplo n.º 3
0
// Run runs the simulation
func (e *Simulation) Run(sdaConf *sda.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 := sdaConf.Overlay.CreateProtocolSDA(sdaConf.Tree, "Broadcast")
	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 := sdaConf.Overlay.CreateProtocolSDA(sdaConf.Tree, "ByzCoinPBFT")
		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
}