func getInACLRule()

in cni/cni.go [267:304]
30 lines of code
4 McCabe index (conditional complexity)

func getInACLRule(mapping *PortMapping, aclPriority uint16) (*network.Policy, error) {

	var err error
	// protocol can be passed either as a number or a name
	protocolInt, err := network.GetPortEnumValue(mapping.Protocol)
	if err != nil {
		return nil, err
	}

	in := hcn.AclPolicySetting{
		Protocols:  strconv.Itoa(int(protocolInt)),
		Action:     hcn.ActionTypeAllow,
		Direction:  hcn.DirectionTypeIn,
		LocalPorts: strconv.Itoa(mapping.ContainerPort),
		Priority:   aclPriority,
	}

	rawJSON, err := json.Marshal(in)
	if err != nil {
		return nil, fmt.Errorf("failed marshalling acl: %v", err)
	}

	inPol := hcn.EndpointPolicy{
		Type:     hcn.ACL,
		Settings: rawJSON,
	}

	rawData, err := json.Marshal(inPol)
	inPolicy := network.Policy{
		Type: network.EndpointPolicy,
		Data: rawData}

	if err != nil {
		return nil, fmt.Errorf("failed marshalling acl: %v", err)
	}

	return &inPolicy, nil
}