Examples with LinkDirection org.btrplace.model.view.network.Routing.LinkDirection used on opensource projects

Example 1 with LinkDirection

use of org.btrplace.model.view.network.Routing.LinkDirection in project scheduler by btrplace.

the class CNetwork method addLinkConstraints.

/**
 * Add the cumulative constraints for each link.
 *
 * Full-duplex links are considered, two cumulative constraints are defined per link by looking at
 * the migration direction for each link on the migration path.
 *
 * @param rp the reconfiguration problem
 */
private void addLinkConstraints(ReconfigurationProblem rp) {
    // Links limitation
    List<Task> tasksListUp = new ArrayList<>();
    List<Task> tasksListDown = new ArrayList<>();
    List<IntVar> heightsListUp = new ArrayList<>();
    List<IntVar> heightsListDown = new ArrayList<>();
    for (Link l : net.getLinks()) {
        for (VM vm : rp.getVMs()) {
            VMTransition a = rp.getVMAction(vm);
            if (a instanceof RelocatableVM && !a.getDSlice().getHoster().isInstantiatedTo(a.getCSlice().getHoster().getValue())) {
                Node src = source.getMapping().getVMLocation(vm);
                Node dst = rp.getNode(a.getDSlice().getHoster().getValue());
                List<Link> path = net.getRouting().getPath(src, dst);
                // Check first if the link is on migration path
                if (path.contains(l)) {
                    // Get link direction
                    LinkDirection linkDirection = net.getRouting().getLinkDirection(src, dst, l);
                    // UpLink
                    if (linkDirection == LinkDirection.UPLINK) {
                        tasksListUp.add(((RelocatableVM) a).getMigrationTask());
                        heightsListUp.add(((RelocatableVM) a).getBandwidth());
                    } else // DownLink
                    {
                        tasksListDown.add(((RelocatableVM) a).getMigrationTask());
                        heightsListDown.add(((RelocatableVM) a).getBandwidth());
                    }
                }
            }
        }
        if (!tasksListUp.isEmpty()) {
            // Post the cumulative constraint for the current UpLink
            csp.post(csp.cumulative(tasksListUp.toArray(new Task[tasksListUp.size()]), heightsListUp.toArray(new IntVar[heightsListUp.size()]), csp.intVar(l.getCapacity()), true));
            tasksListUp.clear();
            heightsListUp.clear();
        }
        if (!tasksListDown.isEmpty()) {
            // Post the cumulative constraint for the current DownLink
            csp.post(csp.cumulative(tasksListDown.toArray(new Task[tasksListDown.size()]), heightsListDown.toArray(new IntVar[heightsListDown.size()]), csp.intVar(l.getCapacity()), true));
            tasksListDown.clear();
            heightsListDown.clear();
        }
    }
}