This module models the functionalities of the Service Registry entity in the MEC architecture (ETSI GS MEC 003). It exposes a REST API compliant with ETSI GS MEC 011, allowing MEC applications to discover MEC services available in the MEC host. In particular, MEC applications can obtain the IP address and port number for each instantiated MEC service, so that they can start sending requests to it

Inheritance diagram

The following diagram shows inheritance relationships for this type. Unresolved types are missing from the diagram.

Used in compound modules

Name	Type	Description
MECPlatform	compound module	This module represents the MEC Platform entity within a MECHost, as specified in the ETSI MEC architecture (ETSI GS MEC 003). It encompasses the MEC services made available to MEC applications instantiated within the MEC Host, along with the ServiceRegistry. The type and number of available MEC services can be configured.

Parameters

Name	Type	Default value	Description
serviceName	string	"ServiceRegistry"
requestQueueSize	int	0
subscriptionQueueSize	int	0
localAddress	string	""	local address; may be left empty ("")
localPort	int	1000	localPort number to listen on
requestServiceTime	double	15us
subscriptionServiceTime	double	20us
serverThreadClass	string	"simu5g.nodes.mec.MECPlatform.MECServices.MECServiceBase.SocketManager"
tos	int	-1	if not -1, set the Type Of Service (IPv4) / Traffic Class (IPv6) field of sent packets to this value
binderModule	string	"binder"

Properties

Name	Value	Description
display	i=block/source
class	ServiceRegistry

Gates

Name	Direction	Size	Description
socketOut	output
socketIn	input

Signals

Name	Type	Unit	Description
responseTime
requestQueueSize

Statistics

Name	Title	Source	Record	Unit	Interpolation Mode	Description
requestQueueSizeStat	Request queue size	requestQueueSize	mean, vector
responseTimeStat	Response time of foreground requests	responseTime	mean, vector

Source code

//
// This module models the functionalities of the Service Registry entity in
// the MEC architecture (ETSI GS MEC 003). It exposes a REST API
// compliant with ETSI GS MEC 011, allowing MEC applications to discover MEC services
// available in the MEC host. In particular, MEC applications can obtain the IP address
// and port number for each instantiated MEC service, so that they can start sending
// requests to it
//
simple ServiceRegistry like IApp
{
    parameters:
        @display("i=block/source");
        @class("ServiceRegistry");

        string serviceName = default("ServiceRegistry");
        int requestQueueSize = default(0);
        int subscriptionQueueSize = default(0);
        string localAddress = default(""); // local address; may be left empty ("")
        int localPort = default(1000);     // localPort number to listen on

        double requestServiceTime @unit(s) = default(15us);
        double subscriptionServiceTime @unit(s) = default(20us);

        string serverThreadClass = default("simu5g.nodes.mec.MECPlatform.MECServices.MECServiceBase.SocketManager");

        int tos = default(-1); // if not -1, set the Type Of Service (IPv4) / Traffic Class (IPv6) field of sent packets to this value

        string binderModule = default("binder");

        @signal[requestQueueSize];
        @statistic[requestQueueSizeStat](title="Request queue size"; source="requestQueueSize"; record=mean,vector);
        @signal[responseTime];
        @statistic[responseTimeStat](title="Response time of foreground requests"; source="responseTime"; record=mean,vector);

    gates:
        output socketOut;
        input socketIn;
}

File: src/nodes/mec/MECPlatform/ServiceRegistry/ServiceRegistry.ned

---

This documentation is released under the Creative Commons license