75 lines
1.9 KiB
Go
75 lines
1.9 KiB
Go
package subnet
|
|
|
|
import (
|
|
"fmt"
|
|
"os"
|
|
|
|
"git.g3e.fr/syonad/two/internal/ebtables"
|
|
"git.g3e.fr/syonad/two/internal/netif"
|
|
"git.g3e.fr/syonad/two/internal/netns"
|
|
"git.g3e.fr/syonad/two/pkg/db/kv"
|
|
"git.g3e.fr/syonad/two/pkg/systemd"
|
|
|
|
"github.com/dgraph-io/badger/v4"
|
|
)
|
|
|
|
func DeleteSubnet(db *badger.DB, subnetName string) error {
|
|
state, err := kv.GetFromDB(db, "subnet/"+subnetName+"/state")
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if state != "deleting" {
|
|
return nil
|
|
}
|
|
|
|
d, err := loadSubnet(db, subnetName)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
vxlanIface := fmt.Sprintf("vxlan-%d", d.vxlanID)
|
|
|
|
svc, err := systemd.New()
|
|
if err != nil {
|
|
return fmt.Errorf("connect to systemd: %w", err)
|
|
}
|
|
defer svc.Close()
|
|
|
|
if err := svc.Stop("dnsmasq@" + d.vpc + "_" + d.bridge + ".service"); err != nil {
|
|
return fmt.Errorf("stop dnsmasq: %w", err)
|
|
}
|
|
|
|
if err := os.Remove("/etc/dnsmasq.d/" + d.vpc + "_" + d.bridge + ".conf"); err != nil && !os.IsNotExist(err) {
|
|
return fmt.Errorf("remove dnsmasq config: %w", err)
|
|
}
|
|
if err := kv.DeleteInDB(db, "subnet/"+subnetName+"/dhcp"); err != nil {
|
|
return fmt.Errorf("delete dhcp entries: %w", err)
|
|
}
|
|
|
|
if err := ebtables.DeleteARPToGateway(d.bridge, d.gatewayIP.String()); err != nil {
|
|
return fmt.Errorf("delete ebtables arp rule: %w", err)
|
|
}
|
|
if err := ebtables.DeleteDHCP(d.bridge); err != nil {
|
|
return fmt.Errorf("delete ebtables dhcp rule: %w", err)
|
|
}
|
|
|
|
if err := netns.Call(d.vpc, func() error {
|
|
return netif.DeleteLink(d.bridge)
|
|
}); err != nil {
|
|
return fmt.Errorf("delete bridge in netns: %w", err)
|
|
}
|
|
|
|
if err := netif.DeleteLink(vxlanIface); err != nil {
|
|
return fmt.Errorf("delete vxlan: %w", err)
|
|
}
|
|
|
|
if err := netif.DeleteLink("v-" + d.subnetID + "-e"); err != nil {
|
|
return fmt.Errorf("delete veth: %w", err)
|
|
}
|
|
|
|
if err := netif.DeleteLink(d.bridge); err != nil {
|
|
return fmt.Errorf("delete bridge: %w", err)
|
|
}
|
|
|
|
return kv.AddInDB(db, "subnet/"+subnetName+"/state", "deleted")
|
|
}
|