// parse the hosts.txt file to create a separate list (and file)
// of physical nodes and virtual nodes. Such that each host on line i, in phys.txt
// corresponds to each host on line i, in virt.txt.
func (d *Deter) readHosts() {
hosts_file := d.DeployDir + "/hosts.txt"
nmachs, nloggers := d.Config.Nmachs, d.Config.Nloggers
physVirt, err := cliutils.ReadLines(hosts_file)
if err != nil {
log.Panic("Couldn't find", hosts_file)
}
d.phys = make([]string, 0, len(physVirt)/2)
d.virt = make([]string, 0, len(physVirt)/2)
for i := 0; i < len(physVirt); i += 2 {
d.phys = append(d.phys, physVirt[i])
d.virt = append(d.virt, physVirt[i+1])
}
d.phys = d.phys[:nmachs+nloggers]
d.virt = d.virt[:nmachs+nloggers]
d.physOut = strings.Join(d.phys, "\n")
d.virtOut = strings.Join(d.virt, "\n")
d.masterLogger = d.phys[0]
// slaveLogger1 := phys[1]
// slaveLogger2 := phys[2]
// phys.txt and virt.txt only contain the number of machines that we need
dbg.Lvl3("Reading phys and virt")
err = ioutil.WriteFile(d.DeployDir+"/phys.txt", []byte(d.physOut), 0666)
if err != nil {
log.Fatal("failed to write physical nodes file", err)
}
err = ioutil.WriteFile(d.DeployDir+"/virt.txt", []byte(d.virtOut), 0666)
if err != nil {
log.Fatal("failed to write virtual nodes file", err)
}
}
func getDebugServers() []string {
// read in physical nodes and virtual nodes into global variables
phys, err := cliutils.ReadLines("phys.txt")
if err != nil {
log.Errorln(err)
}
virt, err := cliutils.ReadLines("virt.txt")
if err != nil {
log.Errorln(err)
}
// create mapping from virtual nodes to physical nodes
vpmap := make(map[string]string)
for i := range phys {
vpmap[virt[i]] = phys[i]
}
// now read in the hosttree to get a list of servers
cfg, e := ioutil.ReadFile("tree.json")
if e != nil {
log.Fatal("Error Reading Configuration File:", e)
}
var cf config.ConfigFile
err = json.Unmarshal(cfg, &cf)
if err != nil {
log.Fatal("unable to unmarshal config.ConfigFile:", err)
}
debugServers := make([]string, 0, len(virt))
cf.Tree.TraverseTree(func(t *graphs.Tree) {
h, p, err := net.SplitHostPort(t.Name)
if err != nil {
log.Fatal("improperly formatted hostport:", err)
}
pn, _ := strconv.Atoi(p)
s := net.JoinHostPort(vpmap[h], strconv.Itoa(pn+2))
debugServers = append(debugServers, s)
})
return debugServers
}
func setup_deter() {
virt, err := cliutils.ReadLines("virt.txt")
if err != nil {
log.Fatal(err)
}
phys, err := cliutils.ReadLines("phys.txt")
if err != nil {
log.Fatal(err)
}
vpmap := make(map[string]string)
for i := range virt {
vpmap[virt[i]] = phys[i]
}
nloggers := conf.Nloggers
masterLogger := phys[0]
loggers := []string{masterLogger}
for n := 1; n <= nloggers; n++ {
loggers = append(loggers, phys[n])
}
phys = phys[nloggers:]
virt = virt[nloggers:]
// Read in and parse the configuration file
file, err := ioutil.ReadFile("tree.json")
if err != nil {
log.Fatal("deter.go: error reading configuration file: %v\n", err)
}
dbg.Lvl4("cfg file:", string(file))
var cf config.ConfigFile
err = json.Unmarshal(file, &cf)
if err != nil {
log.Fatal("unable to unmarshal config.ConfigFile:", err)
}
hostnames := cf.Hosts
dbg.Lvl4("hostnames:", hostnames)
depth := graphs.Depth(cf.Tree)
cf.Tree.TraverseTree(func(t *graphs.Tree) {
if random_leaf != "" {
return
}
if len(t.Children) == 0 {
random_leaf = t.Name
}
})
rootname = hostnames[0]
dbg.Lvl4("depth of tree:", depth)
// mapping from physical node name to the timestamp servers that are running there
// essentially a reverse mapping of vpmap except ports are also used
physToServer = make(map[string][]string)
for _, virt := range hostnames {
v, _, _ := net.SplitHostPort(virt)
p := vpmap[v]
ss := physToServer[p]
ss = append(ss, virt)
physToServer[p] = ss
}
dbg.Lvl3("PhysToServer is", physToServer)
loggerports = make([]string, len(loggers))
for i, logger := range loggers {
loggerports[i] = logger + ":10000"
}
}
func main() {
deter, err := deploy.ReadConfig("remote")
if err != nil {
log.Fatal("Couldn't read config in deter:", err)
}
conf = deter.Config
dbg.DebugVisible = conf.Debug
dbg.Lvl1("running deter with nmsgs:", conf.Nmsgs, "rate:", conf.Rate, "rounds:", conf.Rounds, "debug:", conf.Debug)
virt, err := cliutils.ReadLines("remote/virt.txt")
if err != nil {
log.Fatal(err)
}
phys, err := cliutils.ReadLines("remote/phys.txt")
if err != nil {
log.Fatal(err)
}
vpmap := make(map[string]string)
for i := range virt {
vpmap[virt[i]] = phys[i]
}
// kill old processes
var wg sync.WaitGroup
doneHosts := make([]bool, len(phys))
for i, h := range phys {
wg.Add(1)
go func(i int, h string) {
defer wg.Done()
dbg.Lvl4("Cleaning up host", h)
cliutils.SshRun("", h, "sudo killall app forkexec logserver timeclient scp ssh 2>/dev/null >/dev/null")
time.Sleep(1 * time.Second)
cliutils.SshRun("", h, "sudo killall app 2>/dev/null >/dev/null")
if dbg.DebugVisible > 3 {
dbg.Lvl4("Killing report:")
cliutils.SshRunStdout("", h, "ps ax")
}
doneHosts[i] = true
dbg.Lvl3("Host", h, "cleaned up")
}(i, h)
}
cleanupChannel := make(chan string)
go func() {
wg.Wait()
dbg.Lvl3("Done waiting")
cleanupChannel <- "done"
}()
select {
case msg := <-cleanupChannel:
dbg.Lvl3("Received msg from cleanupChannel", msg)
case <-time.After(time.Second * 10):
for i, m := range doneHosts {
if !m {
dbg.Lvl1("Missing host:", phys[i])
}
}
dbg.Fatal("Didn't receive all replies.")
}
if kill {
dbg.Lvl1("Returning only from cleanup")
return
}
/*
* Why copy the stuff to the other nodes? We have NFS, no?
for _, h := range phys {
wg.Add(1)
go func(h string) {
defer wg.Done()
cliutils.Rsync("", h, "remote", "")
}(h)
}
wg.Wait()
*/
nloggers := conf.Nloggers
masterLogger := phys[0]
loggers := []string{masterLogger}
dbg.Lvl3("Going to create", nloggers, "loggers")
for n := 1; n < nloggers; n++ {
loggers = append(loggers, phys[n])
}
phys = phys[nloggers:]
virt = virt[nloggers:]
// Read in and parse the configuration file
file, err := ioutil.ReadFile("remote/tree.json")
if err != nil {
log.Fatal("deter.go: error reading configuration file: %v\n", err)
}
dbg.Lvl4("cfg file:", string(file))
var cf config.ConfigFile
err = json.Unmarshal(file, &cf)
if err != nil {
log.Fatal("unable to unmarshal config.ConfigFile:", err)
}
hostnames := cf.Hosts
dbg.Lvl4("hostnames:", hostnames)
depth := graphs.Depth(cf.Tree)
var random_leaf string
cf.Tree.TraverseTree(func(t *graphs.Tree) {
if random_leaf != "" {
return
}
if len(t.Children) == 0 {
random_leaf = t.Name
}
})
rootname = hostnames[0]
dbg.Lvl4("depth of tree:", depth)
// mapping from physical node name to the timestamp servers that are running there
// essentially a reverse mapping of vpmap except ports are also used
physToServer := make(map[string][]string)
for _, virt := range hostnames {
v, _, _ := net.SplitHostPort(virt)
p := vpmap[v]
ss := physToServer[p]
ss = append(ss, virt)
physToServer[p] = ss
}
// start up the logging server on the final host at port 10000
dbg.Lvl1("starting up logservers: ", loggers)
// start up the master logger
loggerports := make([]string, len(loggers))
for i, logger := range loggers {
loggerport := logger + ":10000"
loggerports[i] = loggerport
// redirect to the master logger
master := masterLogger + ":10000"
// if this is the master logger than don't set the master to anything
if loggerport == masterLogger+":10000" {
master = ""
}
// Copy configuration file to make higher file-limits
err = cliutils.SshRunStdout("", logger, "sudo cp remote/cothority.conf /etc/security/limits.d")
if err != nil {
log.Fatal("Couldn't copy limit-file:", err)
}
go cliutils.SshRunStdout("", logger, "cd remote; sudo ./logserver -addr="+loggerport+
" -master="+master)
}
i := 0
// For coll_stamp we have to wait for everything in place which takes quite some time
// We set up a directory and every host writes a file once he's ready to listen
// When everybody is ready, the directory is deleted and the test starts
coll_stamp_dir := "remote/coll_stamp_up"
if conf.App == "coll_stamp" || conf.App == "coll_sign" {
os.RemoveAll(coll_stamp_dir)
os.MkdirAll(coll_stamp_dir, 0777)
time.Sleep(time.Second)
}
dbg.Lvl1("starting", len(physToServer), "forkexecs")
totalServers := 0
for phys, virts := range physToServer {
if len(virts) == 0 {
continue
}
totalServers += len(virts)
dbg.Lvl1("Launching forkexec for", len(virts), "clients on", phys)
//cmd := GenExecCmd(phys, virts, loggerports[i], random_leaf)
i = (i + 1) % len(loggerports)
wg.Add(1)
go func(phys string) {
//dbg.Lvl4("running on ", phys, cmd)
defer wg.Done()
dbg.Lvl4("Starting servers on physical machine ", phys)
err := cliutils.SshRunStdout("", phys, "cd remote; sudo ./forkexec"+
" -physaddr="+phys+" -logger="+loggerports[i])
if err != nil {
log.Fatal("Error starting timestamper:", err, phys)
}
dbg.Lvl4("Finished with Timestamper", phys)
}(phys)
}
if conf.App == "coll_stamp" || conf.App == "coll_sign" {
// Every stampserver that started up (mostly waiting for configuration-reading)
// writes its name in coll_stamp_dir - once everybody is there, the directory
// is cleaned to flag it's OK to go on.
start_config := time.Now()
for {
files, err := ioutil.ReadDir(coll_stamp_dir)
if err != nil {
log.Fatal("Couldn't read directory", coll_stamp_dir, err)
} else {
dbg.Lvl1("Stampservers started:", len(files), "/", totalServers, "after", time.Since(start_config))
if len(files) == totalServers {
os.RemoveAll(coll_stamp_dir)
// 1st second for everybody to see the deleted directory
// 2nd second for everybody to start up listening
time.Sleep(2 * time.Second)
break
}
}
time.Sleep(time.Second)
}
}
switch conf.App {
case "coll_stamp":
dbg.Lvl1("starting", len(physToServer), "time clients")
// start up one timeclient per physical machine
// it requests timestamps from all the servers on that machine
for p, ss := range physToServer {
if len(ss) == 0 {
continue
}
servers := strings.Join(ss, ",")
go func(i int, p string) {
_, err := cliutils.SshRun("", p, "cd remote; sudo ./app -mode=client -app="+conf.App+
" -name=client@"+p+
" -server="+servers+
" -logger="+loggerports[i])
if err != nil {
dbg.Lvl4("Deter.go : timeclient error ", err)
}
dbg.Lvl4("Deter.go : Finished with timeclient", p)
}(i, p)
i = (i + 1) % len(loggerports)
}
case "coll_sign_no":
// TODO: for now it's only a simple startup from the server
dbg.Lvl1("Starting only one client")
/*
p := physToServer[0][0]
servers := strings.Join(physToServer[0][1], ",")
_, err = cliutils.SshRun("", p, "cd remote; sudo ./app -mode=client -app=" + conf.App +
" -name=client@" + p +
" -server=" + servers +
" -logger=" + loggerports[i])
i = (i + 1) % len(loggerports)
*/
}
// wait for the servers to finish before stopping
wg.Wait()
//time.Sleep(10 * time.Minute)
}