// Run CNI IPAM for the container, either allocating an IP address and returning
// it (for ADD) or releasing the lease and cleaning up (for DEL)
func (m *podManager) runIPAM(netnsPath string, action cniserver.CNICommand, id string) (*cnitypes.Result, error) {
args := &invoke.Args{
Command: string(action),
ContainerID: id,
NetNS: netnsPath,
IfName: podInterfaceName,
Path: "/opt/cni/bin",
}
if action == cniserver.CNI_ADD {
result, err := invoke.ExecPluginWithResult("/opt/cni/bin/host-local", m.ipamConfig, args)
if err != nil {
return nil, fmt.Errorf("failed to run CNI IPAM ADD: %v", err)
}
if result.IP4 == nil {
return nil, fmt.Errorf("failed to obtain IP address from CNI IPAM")
}
return result, nil
} else if action == cniserver.CNI_DEL {
err := invoke.ExecPluginWithoutResult("/opt/cni/bin/host-local", m.ipamConfig, args)
if err != nil {
return nil, fmt.Errorf("failed to run CNI IPAM DEL: %v", err)
}
return nil, nil
}
return nil, fmt.Errorf("invalid IPAM action %v", action)
}
func (c *CNIConfig) AddNetwork(net *NetworkConfig, rt *RuntimeConf) (*types.Result, error) {
pluginPath, err := invoke.FindInPath(net.Network.Type, c.Path)
if err != nil {
return nil, err
}
return invoke.ExecPluginWithResult(pluginPath, net.Bytes, c.args("ADD", rt))
}
// Run CNI IPAM allocation for the container and return the allocated IP address
func (m *podManager) ipamAdd(netnsPath string, id string) (*cnitypes.Result, error) {
if netnsPath == "" {
return nil, fmt.Errorf("netns required for CNI_ADD")
}
args := createIPAMArgs(netnsPath, cniserver.CNI_ADD, id)
result, err := invoke.ExecPluginWithResult("/opt/cni/bin/host-local", m.ipamConfig, args)
if err != nil {
return nil, fmt.Errorf("failed to run CNI IPAM ADD: %v", err)
}
if result.IP4 == nil {
return nil, fmt.Errorf("failed to obtain IP address from CNI IPAM")
}
return result, nil
}