// 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
}
// Run is used on the destination machines and runs a number of
// rounds
func (e *simulation) Run(config *sda.SimulationConfig) error {
size := config.Tree.Size()
log.Lvl2("Size is:", size, "rounds:", e.Rounds)
for round := 0; round < e.Rounds; round++ {
log.Lvl1("Starting round", round)
round := monitor.NewTimeMeasure("round")
p, err := config.Overlay.CreateProtocolSDA(config.Tree, "Count")
if err != nil {
return err
}
go p.Start()
children := <-p.(*ProtocolCount).Count
round.Record()
if children != size {
return errors.New("Didn't get " + strconv.Itoa(size) +
" children")
}
}
return nil
}
// 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
}
func (m *monitorMut) NewMeasure(id string) {
m.Lock()
defer m.Unlock()
m.TimeMeasure = monitor.NewTimeMeasure(id)
}
// Main starts the host and will setup the protocol.
func main() {
flag.Parse()
log.SetDebugVisible(debugVisible)
log.Lvl3("Flags are:", hostAddress, simul, log.DebugVisible, monitorAddress)
scs, err := sda.LoadSimulationConfig(".", hostAddress)
measures := make([]*monitor.CounterIOMeasure, len(scs))
if err != nil {
// We probably are not needed
log.Lvl2(err, hostAddress)
return
}
if monitorAddress != "" {
if err := monitor.ConnectSink(monitorAddress); err != nil {
log.Error("Couldn't connect monitor to sink:", err)
}
}
sims := make([]sda.Simulation, len(scs))
var rootSC *sda.SimulationConfig
var rootSim sda.Simulation
for i, sc := range scs {
// Starting all hosts for that server
host := sc.Host
measures[i] = monitor.NewCounterIOMeasure("bandwidth", host)
log.Lvl3(hostAddress, "Starting host", host.ServerIdentity.Addresses)
host.Listen()
host.StartProcessMessages()
sim, err := sda.NewSimulation(simul, sc.Config)
if err != nil {
log.Fatal(err)
}
err = sim.Node(sc)
if err != nil {
log.Fatal(err)
}
sims[i] = sim
if host.ServerIdentity.ID == sc.Tree.Root.ServerIdentity.ID {
log.Lvl2(hostAddress, "is root-node, will start protocol")
rootSim = sim
rootSC = sc
}
}
if rootSim != nil {
// If this cothority has the root-host, it will start the simulation
log.Lvl2("Starting protocol", simul, "on host", rootSC.Host.ServerIdentity.Addresses)
//log.Lvl5("Tree is", rootSC.Tree.Dump())
// First count the number of available children
childrenWait := monitor.NewTimeMeasure("ChildrenWait")
wait := true
// The timeout starts with 1 second, which is the time of response between
// each level of the tree.
timeout := 1000
for wait {
p, err := rootSC.Overlay.CreateProtocolSDA(rootSC.Tree, "Count")
if err != nil {
log.Fatal(err)
}
proto := p.(*manage.ProtocolCount)
proto.SetTimeout(timeout)
proto.Start()
log.Lvl1("Started counting children with timeout of", timeout)
select {
case count := <-proto.Count:
if count == rootSC.Tree.Size() {
log.Lvl1("Found all", count, "children")
wait = false
} else {
log.Lvl1("Found only", count, "children, counting again")
}
}
// Double the timeout and try again if not successful.
timeout *= 2
}
childrenWait.Record()
log.Lvl1("Starting new node", simul)
measureNet := monitor.NewCounterIOMeasure("bandwidth_root", rootSC.Host)
err := rootSim.Run(rootSC)
if err != nil {
log.Fatal(err)
}
measureNet.Record()
// Test if all ServerIdentities are used in the tree, else we'll run into
// troubles with CloseAll
if !rootSC.Tree.UsesList() {
log.Error("The tree doesn't use all ServerIdentities from the list!\n" +
"This means that the CloseAll will fail and the experiment never ends!")
}
closeTree := rootSC.Tree
if rootSC.GetSingleHost() {
// In case of "SingleHost" we need a new tree that contains every
// entity only once, whereas rootSC.Tree will have the same
// entity at different TreeNodes, which makes it difficult to
// correctly close everything.
log.Lvl2("Making new root-tree for SingleHost config")
closeTree = rootSC.Roster.GenerateBinaryTree()
rootSC.Overlay.RegisterTree(closeTree)
}
pi, err := rootSC.Overlay.CreateProtocolSDA(closeTree, "CloseAll")
pi.Start()
if err != nil {
log.Fatal(err)
}
}
// Wait for all hosts to be closed
allClosed := make(chan bool)
go func() {
for i, sc := range scs {
sc.Host.WaitForClose()
// record the bandwidth
measures[i].Record()
log.Lvl3(hostAddress, "Simulation closed host", sc.Host.ServerIdentity.Addresses, "closed")
}
allClosed <- true
}()
log.Lvl3(hostAddress, scs[0].Host.ServerIdentity.First(), "is waiting for all hosts to close")
<-allClosed
log.Lvl2(hostAddress, "has all hosts closed")
monitor.EndAndCleanup()
}
// 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
}