func setup_network(host client.Anchor, id int) bool {
// ids
ip_base := "10.0.0." + strconv.Itoa(id)
eth0 := "eth0"
eth00 := "eth0.1"
br0 := "br_poc"
tap0 := "tap_poc"
orquit := " || exit 1"
// commands
commands := []string{}
commands = append(commands, "ip link add link "+eth0+" "+eth00+" type vlan id 1")
commands = append(commands, "ip link set "+eth00+" up")
commands = append(commands, "brctl addbr "+br0)
commands = append(commands, "ip link set "+br0+" up")
commands = append(commands, "ip addr add "+ip_base+"/24 dev "+br0)
commands = append(commands, "ip tuntap add dev "+tap0+" mode tap multi_queue")
commands = append(commands, "ip link set "+tap0+" up")
commands = append(commands, "brctl addif "+br0+" "+tap0+" "+eth00)
for _, v := range commands {
cmd := v + orquit
_, err := runShell(host, cmd)
debug("[%s] "+cmd, host.ServerID())
if err != nil {
debug("[%s] %s ", host.ServerID(), err)
}
}
return false
}
func check_prereqs(host client.Anchor, ps []string) (ret bool) {
ret = false
for _, v := range ps {
out, err := runShell(host, "which "+v)
if err != nil || len(out) == 0 {
debug("[%s] missing prereq %s ", host.ServerID(), v)
ret = true
}
}
return
}
func start_server(host client.Anchor, id int) bool {
debug("[%s] starting server ", host.ServerID())
job := host.Walk([]string{"iperf", "server"})
proc, _ := job.MakeProc(client.Cmd{
Path: "/bin/sh",
Dir: "/tmp",
Args: []string{"-c", "iperf -s"},
Scrub: true,
})
phase := proc.Peek().Phase
debug("[%s] iperf server "+phase, host.ServerID())
go func() {
debug("TEST OUTPUT START:")
for {
if b, err := ioutil.ReadAll(proc.Stdout()); err == nil {
debug("out[%s]", string(b))
}
}
}()
io.Copy(proc.Stdin(), bytes.NewBufferString("\r\n"))
proc.Stdin().Close() // Must close the standard input of the shell process.
return false
}
func runShellStdin(host client.Anchor, cmd, stdin string) (string, error) {
defer func() {
if recover() != nil {
abort("connection to host lost")
}
}()
job := host.Walk([]string{"shelljob", strconv.Itoa(rand.Int())})
proc, _ := job.MakeProc(client.Cmd{
Path: "/bin/sh",
Dir: "/tmp",
Args: []string{"-c", cmd},
Scrub: true,
})
go func() {
io.Copy(proc.Stdin(), bytes.NewBufferString(stdin))
proc.Stdin().Close() // Must close the standard input of the shell process.
}()
proc.Stderr().Close() // Close to indicate discarding standard error
var buf bytes.Buffer
io.Copy(&buf, proc.Stdout())
stat, _ := proc.Wait()
return buf.String(), stat.Exit
}