func (c *Context) RemoveContainer(h *exec.Handle, scope string) error {
c.Lock()
defer c.Unlock()
if h == nil {
return fmt.Errorf("handle is required")
}
if _, ok := c.containers[uid.Parse(h.ExecConfig.ID)]; ok {
return fmt.Errorf("container is bound")
}
var err error
s, err := c.resolveScope(scope)
if err != nil {
return err
}
var ne *executor.NetworkEndpoint
ne, ok := h.ExecConfig.Networks[s.Name()]
if !ok {
return fmt.Errorf("container %s not part of network %s", h.ExecConfig.ID, s.Name())
}
// figure out if any other networks are using the NIC
removeNIC := true
for _, ne2 := range h.ExecConfig.Networks {
if ne2 == ne {
continue
}
if ne2.ID == ne.ID {
removeNIC = false
break
}
}
if removeNIC {
// ensure spec is not nil
h.SetSpec(nil)
var devices object.VirtualDeviceList
backing, err := s.network.EthernetCardBackingInfo(context.Background())
if err != nil {
return err
}
d, err := devices.CreateEthernetCard("vmxnet3", backing)
if err != nil {
return err
}
devices = append(devices, d)
spec, err := devices.ConfigSpec(types.VirtualDeviceConfigSpecOperationRemove)
if err != nil {
return err
}
h.Spec.DeviceChange = append(h.Spec.DeviceChange, spec...)
}
delete(h.ExecConfig.Networks, s.Name())
return nil
}
// AddContainer add a container to the specified scope, optionally specifying an ip address
// for the container in the scope
func (c *Context) AddContainer(h *exec.Handle, options *AddContainerOptions) error {
c.Lock()
defer c.Unlock()
if h == nil {
return fmt.Errorf("handle is required")
}
var err error
s, err := c.resolveScope(options.Scope)
if err != nil {
return err
}
if h.ExecConfig.Networks != nil {
if _, ok := h.ExecConfig.Networks[s.Name()]; ok {
// already part of this scope
return nil
}
// check if container is already part of an "external" scope;
// only one "external" scope per container is allowed
if s.Type() == ExternalScopeType {
for name := range h.ExecConfig.Networks {
sc, _ := c.resolveScope(name)
if sc.Type() == ExternalScopeType {
return fmt.Errorf("container can only be added to at most one mapped network")
}
}
}
}
if err := h.SetSpec(nil); err != nil {
return err
}
// figure out if we need to add a new NIC
// if there is already a NIC connected to a
// bridge network and we are adding the container
// to a bridge network, we just reuse that
// NIC
var pciSlot int32
if s.Type() == BridgeScopeType {
for _, ne := range h.ExecConfig.Networks {
sc, err := c.resolveScope(ne.Network.Name)
if err != nil {
return err
}
if sc.Type() != BridgeScopeType {
continue
}
if ne.ID != "" {
pciSlot = atoiOrZero(ne.ID)
if pciSlot != 0 {
break
}
}
}
}
if pciSlot == 0 {
d, err := addEthernetCard(h, s)
if err != nil {
return err
}
pciSlot = spec.VirtualDeviceSlotNumber(d)
}
if h.ExecConfig.Networks == nil {
h.ExecConfig.Networks = make(map[string]*executor.NetworkEndpoint)
}
ne := &executor.NetworkEndpoint{
Common: executor.Common{
ID: strconv.Itoa(int(pciSlot)),
// Name: this would cause NIC renaming if uncommented
},
Network: executor.ContainerNetwork{
Common: executor.Common{
Name: s.Name(),
},
Aliases: options.Aliases,
},
Ports: options.Ports,
}
if options.IP != nil && !options.IP.IsUnspecified() {
ne.Static = &net.IPNet{
IP: *options.IP,
Mask: s.Subnet().Mask,
}
}
h.ExecConfig.Networks[s.Name()] = ne
return nil
}
