func NewConfigs()

in cmd/core_plugin/network/nic/nic.go [63:106]
33 lines of code
10 McCabe index (conditional complexity)

func NewConfigs(desc *metadata.Descriptor, config *cfg.Sections, ignore address.IPAddressMap) ([]*Configuration, error) {
	var res []*Configuration

	// Iterate over the NICs and create the nicConfig for each NIC. The configured
	// addresses will have the wsfcAddresses ignored when constructing the extra
	// addresses mappings.
	for index, nic := range desc.Instance().NetworkInterfaces() {
		if !config.NetworkInterfaces.ManagePrimaryNIC && index == 0 {
			galog.Infof("Skipping primary NIC configuration, disabled by configuration.")
			continue
		}

		data, err := newConfig(nic, config, ignore)
		if err != nil {
			return nil, fmt.Errorf("failed to create NIC config for NIC(%d) %s: %w", index, nic.MAC(), err)
		}
		data.Index = uint32(index)
		res = append(res, data)
	}

	// Initializes the VLAN interfaces and set them to their parent NIC.
	for _, vlanSlice := range desc.Instance().VlanInterfaces() {
		for _, vic := range vlanSlice {
			parent, err := ethernet.VlanParentInterface(vic.ParentInterface())
			if err != nil {
				return nil, fmt.Errorf("failed to create VLAN config for VLAN (%d) %s: %w", vic.Vlan(), vic.MAC(), err)
			}

			if parent < 0 || parent >= len(res) {
				return nil, fmt.Errorf("VLAN interface's parent NIC (%d) is out of bounds", parent)
			}

			parentConfig := res[parent]
			data, err := ethernet.NewVlanInterface(vic, parentConfig.Interface)
			if err != nil {
				return nil, fmt.Errorf("failed to create VLAN config for VLAN (%d) %s: %w", vic.Vlan(), vic.MAC(), err)
			}

			parentConfig.VlanInterfaces = append(parentConfig.VlanInterfaces, data)
		}
	}

	return res, nil
}