func()

in pkg/providers/instance/instance.go [286:336]

• 46 lines of code
• 6 McCabe index (conditional complexity)

func (p *DefaultProvider) newNetworkInterfaceForVM(opts *createNICOptions) armnetwork.Interface {
	var ipv4BackendPools []*armnetwork.BackendAddressPool
	for _, poolID := range opts.BackendPools.IPv4PoolIDs {
		ipv4BackendPools = append(ipv4BackendPools, &armnetwork.BackendAddressPool{
			ID: &poolID,
		})
	}

	skuAcceleratedNetworkingRequirements := scheduling.NewRequirements(
		scheduling.NewRequirement(v1alpha2.LabelSKUAcceleratedNetworking, v1.NodeSelectorOpIn, "true"))

	enableAcceleratedNetworking := false
	if err := opts.InstanceType.Requirements.Compatible(skuAcceleratedNetworkingRequirements); err == nil {
		enableAcceleratedNetworking = true
	}
	nic := armnetwork.Interface{
		Location: lo.ToPtr(p.location),
		Properties: &armnetwork.InterfacePropertiesFormat{
			IPConfigurations: []*armnetwork.InterfaceIPConfiguration{
				{
					Name: &opts.NICName,
					Properties: &armnetwork.InterfaceIPConfigurationPropertiesFormat{
						Primary:                   lo.ToPtr(true),
						PrivateIPAllocationMethod: lo.ToPtr(armnetwork.IPAllocationMethodDynamic),

						LoadBalancerBackendAddressPools: ipv4BackendPools,
					},
				},
			},
			EnableAcceleratedNetworking: lo.ToPtr(enableAcceleratedNetworking),
			EnableIPForwarding:          lo.ToPtr(false),
		},
	}
	if opts.NetworkPlugin == consts.NetworkPluginAzure && opts.NetworkPluginMode != consts.NetworkPluginModeOverlay {
		// AzureCNI without overlay requires secondary IPs, for pods. (These IPs are not included in backend address pools.)
		// NOTE: Unlike AKS RP, this logic does not reduce secondary IP count by the number of expected hostNetwork pods, favoring simplicity instead
		for i := 1; i < int(opts.MaxPods); i++ {
			nic.Properties.IPConfigurations = append(
				nic.Properties.IPConfigurations,
				&armnetwork.InterfaceIPConfiguration{
					Name: lo.ToPtr(fmt.Sprintf("ipconfig%d", i)),
					Properties: &armnetwork.InterfaceIPConfigurationPropertiesFormat{
						Primary:                   lo.ToPtr(false),
						PrivateIPAllocationMethod: lo.ToPtr(armnetwork.IPAllocationMethodDynamic),
					},
				},
			)
		}
	}
	return nic
}