func cmdCreate(c *lxd.Client, args []string) error {
var wgBatch sync.WaitGroup
// A path must be provided
if len(args) < 1 {
return fmt.Errorf("A path must be passed to create.")
}
// Load the simulation
routersMap, err := importFromCSV(args[0])
if err != nil {
return err
}
routers := []*Router{}
for _, v := range routersMap {
if v.Tier < 1 {
continue
}
routers = append(routers, v)
}
// Clear any existing images
fp := c.GetAlias("internet-router")
if fp != "" {
logf("Deleting the existing router image: %s", fp)
err = c.DeleteImage(fp)
if err != nil {
return err
}
}
// Load the image
logf("Importing the router image")
_, err = c.PostImage("image/image-meta.tar.xz", "image/image-rootfs.tar.xz", nil, false, []string{"internet-router"}, nil)
if err != nil {
return err
}
logf("New router image imported: %s", fp)
// Create the profile
_, err = c.ProfileConfig("internet-base")
if err != nil {
logf("Creating the profile")
err := c.ProfileCreate("internet-base")
if err != nil {
return err
}
}
// Helper function
createContainer := func(router *Router) {
defer wgBatch.Done()
var interfaces string
var bgpd string
// Configuration
config := map[string]string{}
devices := map[string]map[string]string{}
config["user.internet.type"] = "router"
config["user.internet.organization"] = router.Organization
config["user.internet.priority"] = fmt.Sprintf("%d", router.Priority)
config["user.internet.tier"] = fmt.Sprintf("%d", router.Tier)
config["user.internet.location"] = router.Location
for i, r := range router.DNS {
config[fmt.Sprintf("user.internet.dns.%d", i)] = r
}
config["user.internet.router.fqdn"] = router.Configuration.FQDN
config["user.internet.router.asn"] = fmt.Sprintf("%d", router.Configuration.ASN)
config["user.internet.router.password.login"] = router.Configuration.PasswordLogin
config["user.internet.router.password.enable"] = router.Configuration.PasswordEnable
if router.Configuration.RouterID != nil {
config["user.internet.router.routerid"] = router.Configuration.RouterID.String()
}
if router.Internal {
config["user.internet.internal"] = "true"
} else {
config["user.internet.internal"] = "false"
}
if router.Tier >= 1 && router.Tier <= 3 {
interfaces = fmt.Sprintf(`auto lo
iface lo inet loopback
pre-up echo 0 > /proc/sys/net/ipv6/conf/all/accept_dad || true
post-up echo 1 > /proc/sys/net/ipv6/conf/all/forwarding || true
auto local
iface local inet6 manual
pre-up ip link add local type dummy || true
pre-up ip link set local up || true
`)
}
for i, r := range router.Configuration.Loopback.Addresses {
config[fmt.Sprintf("user.internet.router.loopback.address.%d", i)] = r.String()
if router.Tier >= 1 && router.Tier <= 3 {
interfaces += fmt.Sprintf(" post-up ip -6 addr add dev local %s/128 || true\n", r.String())
}
}
for i, r := range router.Configuration.Loopback.Routes {
config[fmt.Sprintf("user.internet.router.loopback.route.%d.subnet", i)] = r.Subnet.String()
if router.Tier >= 1 && router.Tier <= 3 {
interfaces += fmt.Sprintf(" post-up sleep 10 ; ip -6 route add dev local %s || true\n", r.Subnet.String())
}
}
if router.Tier >= 1 && router.Tier <= 3 {
bgpd = fmt.Sprintf(fmt.Sprintf(`hostname %s
password %s
enable password %s
router bgp %d
bgp router-id %s
no bgp default ipv4-unicast
`, router.Name, router.Configuration.PasswordLogin, router.Configuration.PasswordEnable, router.Configuration.ASN, router.Configuration.RouterID.String()))
}
if router.Peers != nil {
for _, p := range router.Peers {
if strings.HasPrefix(p.Interface, "v") {
device := map[string]string{
"type": "nic",
"nictype": "physical",
"name": p.Interface,
"parent": p.Interface,
"hwaddr": p.MAC,
}
devices[p.Interface] = device
} else if strings.HasPrefix(p.Interface, "br") {
device := map[string]string{
"type": "nic",
"nictype": "bridged",
"name": p.Interface,
"parent": p.Interface,
"hwaddr": p.MAC,
}
devices[p.Interface] = device
} else {
logf("Failed to configure container '%s': Bad interface name: %s", router.Name, p.Interface)
return
}
if router.Tier >= 1 && router.Tier <= 3 {
interfaces += fmt.Sprintf(`
auto %s
iface %s inet6 manual
post-up tc qdisc add dev %s root netem delay %dms || true
post-up tc qdisc add dev %s root netem rate %dmbit || true
`, p.Interface, p.Interface, p.Interface, p.Delay, p.Interface, p.Speed)
if p.ASN != 0 {
bgpd += fmt.Sprintf(`
neighbor %s remote-as %d
neighbor %s weight %d
neighbor %s interface %s
`, p.Remote, p.ASN, p.Remote, p.Weight, p.Remote, p.Interface)
}
}
config[fmt.Sprintf("user.internet.peer.%s.interface", p.Name)] = p.Interface
config[fmt.Sprintf("user.internet.peer.%s.mac", p.Name)] = p.MAC
config[fmt.Sprintf("user.internet.peer.%s.remote", p.Name)] = p.Remote
config[fmt.Sprintf("user.internet.peer.%s.speed", p.Name)] = fmt.Sprintf("%d", p.Speed)
config[fmt.Sprintf("user.internet.peer.%s.delay", p.Name)] = fmt.Sprintf("%d", p.Delay)
config[fmt.Sprintf("user.internet.peer.%s.asn", p.Name)] = fmt.Sprintf("%d", p.ASN)
config[fmt.Sprintf("user.internet.peer.%s.weight", p.Name)] = fmt.Sprintf("%d", p.Weight)
if p.Routes != nil {
for i, r := range p.Routes {
config[fmt.Sprintf("user.internet.peer.%s.route.%d.subnet", p.Name, i)] = r.Subnet.String()
if r.Gateway != nil {
config[fmt.Sprintf("user.internet.peer.%s.route.%d.gateway", p.Name, i)] = r.Gateway.String()
if router.Tier >= 1 && router.Tier <= 3 {
interfaces += fmt.Sprintf(" post-up sleep 10 ; ip -6 route add dev %s %s via %s || true\n", p.Interface, r.Subnet.String(), r.Gateway.String())
}
} else {
if router.Tier >= 1 && router.Tier <= 3 {
interfaces += fmt.Sprintf(" post-up sleep 10 ; ip -6 route add dev %s %s via %s || true\n", p.Interface, r.Subnet.String(), p.Remote)
}
}
}
}
}
}
if router.Tier >= 1 && router.Tier <= 3 {
bgpd += " address-family ipv6\n"
if router.Peers != nil {
for _, p := range router.Peers {
if p.ASN != 0 {
bgpd += fmt.Sprintf(" neighbor %s activate\n", p.Remote)
}
}
}
bgpd += ` redistribute connected
redistribute kernel
exit-address-family
`
config["user.internet.config.interfaces"] = interfaces
config["user.internet.config.bgpd"] = bgpd
}
// Config-only containers
if router.Tier > 3 {
ct, err := c.ContainerInfo(router.Name)
if err != nil {
logf("Failed to configure container '%s': %s", router.Name, err)
return
}
for k, _ := range ct.Config {
if strings.HasPrefix(k, "user.internet.") {
delete(ct.Config, k)
}
}
for k, v := range config {
ct.Config[k] = v
}
err = c.UpdateContainerConfig(router.Name, ct.Writable())
if err != nil {
logf("Failed to configure container '%s': %s", router.Name, err)
return
}
return
}
// Create the container
resp, err := c.Init(router.Name, "local", "internet-router", &[]string{"internet-base"}, config, nil, false)
if err != nil {
logf("Failed to create container '%s': %s", router.Name, err)
return
}
err = c.WaitForSuccess(resp.Operation)
if err != nil {
logf("Failed to create container '%s': %s", router.Name, err)
return
}
// Setup the devices
ct, err := c.ContainerInfo(router.Name)
if err != nil {
logf("Failed to configure container '%s': %s", router.Name, err)
return
}
for k, v := range devices {
ct.Devices[k] = v
}
err = c.UpdateContainerConfig(router.Name, ct.Writable())
if err != nil {
logf("Failed to configure container '%s': %s", router.Name, err)
return
}
}
// Create the containers
batch := 8
batches := len(routers) / batch
remainder := len(routers) % batch
logf("Creating the containers")
current := 0
for i := 0; i < batches; i++ {
for j := 0; j < batch; j++ {
wgBatch.Add(1)
go createContainer(routers[current])
current += 1
}
wgBatch.Wait()
}
for k := 0; k < remainder; k++ {
wgBatch.Add(1)
go createContainer(routers[current])
current += 1
}
wgBatch.Wait()
logf("%d containers created", len(routers))
return nil
}