func()

in controllers/node/node_controller.go [556:599]

• 36 lines of code
• 10 McCabe index (conditional complexity)

func (cnc *CloudNodeController) getInstanceMetadata(ctx context.Context, providerID string, node *v1.Node) (*cloudprovider.InstanceMetadata, error) {
	if instancesV2, ok := cnc.cloud.InstancesV2(); instancesV2 != nil && ok {
		return instancesV2.InstanceMetadata(ctx, node)
	}

	// If InstancesV2 not implement, use Instances.
	instances, ok := cnc.cloud.Instances()
	if !ok {
		return nil, fmt.Errorf("failed to get instances from cloud provider")
	}
	nodeAddresses, err := getNodeAddressesByProviderIDOrName(ctx, instances, providerID, node.Name)
	if err != nil {
		return nil, err
	}
	instanceType, err := getInstanceTypeByProviderIDOrName(ctx, instances, providerID, node.Name)
	if err != nil {
		return nil, err
	}

	instanceMetadata := &cloudprovider.InstanceMetadata{
		InstanceType:  instanceType,
		NodeAddresses: nodeAddresses,
	}

	zones, ok := cnc.cloud.Zones()
	if !ok {
		return instanceMetadata, nil
	}

	zone, err := getZoneByProviderIDOrName(ctx, zones, providerID, node.Name)
	if err != nil {
		return nil, fmt.Errorf("failed to get zone from cloud provider: %v", err)
	}

	if zone.FailureDomain != "" {
		instanceMetadata.Zone = zone.FailureDomain
	}

	if zone.Region != "" {
		instanceMetadata.Region = zone.Region
	}

	return instanceMetadata, nil
}