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High level layout of Group subsystem components is depicted below.

Class Diagram

Image Added

 

Group Service

  • Provides the following API to applications

    • void CreateGroup(Device, GroupType, Collection<GroupBuckets>, GroupKey, appid)

    • Group GetGroup(Device, GroupKey)

    • void AddBucketsToGroup(Device, OldGroupKey, Collection<GroupBuckets>, NewGroupKey, appid)

    • void RemoveBucketsFromGroup(Device, OldGroupKey, Collection<GroupBuckets>, NewGroupKey, appid)

    • void RemoveGroup(Device, GroupKey, appid)
    • GetAllGroups(Device, appid)

    • GetAllGroupStatistics(Device, appid)

  • DataModel

    • Group Types to be supported

      • Select

      • Indirect

      • All

      • Failover

    • Key

      • An application specific cookie that supports Hash and Equals method

    • Id

      • Integer

    • Bucket

      • One or more collection of Traffic Instructions

Code Block
languagejava
titleHow to create and use Group
firstline1
linenumberstrue
collapsetrue
{
    Collection<TrafficTreatment> groupBuckets = new ArrayList<TrafficTreatment>();
	List<PortNumber> outPorts = getPortsToDevice(srcDevice, neighborDevice);

    for (PortNumber portNumber: outPorts) {
        TrafficTreatment.Builder tBuilder = DefaultTrafficTreatment.builder();
        tBuilder.setOutput(portNumber)
                .setEthDst(getRouterMacAddress(neighborDevice))
                .setEthSrc(getRouterMacAddress(srcDevice))
                .pushMpls()
                .setMpls(getMplsId(finalDstDevice));
        groupBuckets.add(tBuilder.build());
    }

	GroupKey gorupKey = SegmentRoutingGroupKey.build(srcDevice, Collection<NeighborDevice>, dstDevice);
    Future<Group> future = groupService.createGroup(srcDevice, Group.Type.SELECT,
            groupBuckets, groupKey, getAppId());
    Group group = future.get();
}
 
public void SetIpRule() {
....
	GroupKey gorupKey = SegmentRoutingGroupKey.build(srcDevice, Collection<NeighborDevice>, dstDevice);
	Group group = groupService.getGroup(srcDevice, groupKey);
	tbuilder.setGroup(group.id());
....
 
}

Group Manager

This component implements the Group Service interface by defining Group create/modify/remove/query operations on devices.

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OF Switch Driver

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