Examples with Node org.btrplace.model.Node used on opensource projects

Example 76 with Node

use of org.btrplace.model.Node in project scheduler by btrplace.

the class CMaxOnline method inject.

@Override
public boolean inject(Parameters ps, ReconfigurationProblem rp) throws SchedulerException {
    Model csp = rp.getModel();
    if (constraint.getInvolvedNodes().isEmpty()) {
        // The constraint is entailed as it contains no node.
        return true;
    }
    if (constraint.isContinuous()) {
        CPowerView view = (CPowerView) rp.getView(CPowerView.VIEW_ID);
        if (view == null) {
            view = new CPowerView();
            if (!rp.addView(view)) {
                throw new SchedulerModelingException(rp.getSourceModel(), "Unable to attach view '" + CPowerView.VIEW_ID + "'");
            }
            if (!view.inject(ps, rp)) {
                throw new SchedulerModelingException(rp.getSourceModel(), "Unable to inject view '" + CPowerView.VIEW_ID + "'");
            }
        }
        int numberOfTasks = constraint.getInvolvedNodes().size();
        int i = 0;
        int[] nodeIdx = new int[numberOfTasks];
        for (Node n : constraint.getInvolvedNodes()) {
            nodeIdx[i++] = rp.getNode(n);
        }
        IntVar capacity = rp.fixed(constraint.getAmount(), "capacity");
        // The state of the node:
        IntVar[] heights = new IntVar[numberOfTasks];
        IntVar[] starts = new IntVar[numberOfTasks];
        IntVar[] ends = new IntVar[numberOfTasks];
        // Online duration:
        IntVar[] durations = new IntVar[numberOfTasks];
        // Online duration is modeled as a task
        Task[] taskVars = new Task[numberOfTasks];
        for (int idx = 0; idx < nodeIdx.length; idx++) {
            Node n = rp.getNode(nodeIdx[idx]);
            // ---------------GET PowerStart and PowerEnd of the node------------------
            starts[idx] = view.getPowerStart(rp.getNode(n));
            ends[idx] = view.getPowerEnd(rp.getNode(n));
            // ------------------------------------------------------------------------
            durations[idx] = rp.makeUnboundedDuration(rp.makeVarLabel("Dur(", n, ")"));
            csp.post(csp.arithm(durations[idx], "<=", rp.getEnd()));
            // All tasks have to be scheduled
            heights[idx] = csp.intVar(1);
            taskVars[idx] = new Task(starts[idx], durations[idx], ends[idx]);
        }
        csp.post(csp.cumulative(taskVars, heights, capacity, true));
    }
    // Constraint for discrete model
    List<IntVar> nodesState = new ArrayList<>(constraint.getInvolvedNodes().size());
    for (Node ni : constraint.getInvolvedNodes()) {
        nodesState.add(rp.getNodeAction(ni).getState());
    }
    IntVar mySum = csp.intVar(rp.makeVarLabel("nbOnline"), 0, constraint.getAmount(), true);
    csp.post(csp.sum(nodesState.toArray(new IntVar[nodesState.size()]), "=", mySum));
    csp.post(csp.arithm(mySum, "<=", constraint.getAmount()));
    return true;
}

Example 77 with Node

use of org.btrplace.model.Node in project scheduler by btrplace.

the class COffline method inject.

@Override
public boolean inject(Parameters ps, ReconfigurationProblem rp) throws SchedulerException {
    if (cstr.isContinuous() && !cstr.getChecker().startsWith(rp.getSourceModel())) {
        rp.getLogger().error("Constraint {} is not satisfied initially", cstr);
        return false;
    }
    Node nId = cstr.getInvolvedNodes().iterator().next();
    int id = rp.getNode(nId);
    NodeTransition m = rp.getNodeAction(nId);
    try {
        m.getState().instantiateTo(0, Cause.Null);
        if (rp.getSourceModel().getMapping().isOffline(nId)) {
            m.getStart().instantiateTo(0, Cause.Null);
        }
    } catch (ContradictionException ex) {
        rp.getLogger().error("Unable to force node '" + nId + "' at being offline", ex);
        return false;
    }
    for (VMTransition am : rp.getVMActions()) {
        Slice s = am.getDSlice();
        if (s != null) {
            try {
                s.getHoster().removeValue(id, Cause.Null);
            } catch (ContradictionException e) {
                rp.getLogger().error("Unable to remove " + am.getVM() + " of node " + nId, e);
            }
        }
    }
    return true;
}

Example 78 with Node

use of org.btrplace.model.Node in project scheduler by btrplace.

the class COverbook method inject.

@Override
public boolean inject(Parameters ps, ReconfigurationProblem rp) throws SchedulerException {
    CShareableResource rcm = (CShareableResource) rp.getView(ShareableResource.VIEW_ID_BASE + cstr.getResource());
    if (rcm == null) {
        throw new SchedulerModelingException(rp.getSourceModel(), "Unable to get the resource mapping '" + cstr.getResource() + "'");
    }
    Node u = cstr.getInvolvedNodes().iterator().next();
    rcm.capOverbookRatio(rp.getNode(u), cstr.getRatio());
    return true;
}

Example 79 with Node

use of org.btrplace.model.Node in project scheduler by btrplace.

the class CResourceCapacity method injectWithSingleNode.

private boolean injectWithSingleNode(CShareableResource rcm, ReconfigurationProblem rp) {
    int amount = cstr.getAmount();
    Model csp = rp.getModel();
    Node n = cstr.getInvolvedNodes().iterator().next();
    int nIdx = rp.getNode(n);
    IntVar v = rcm.getVirtualUsage().get(nIdx);
    csp.post(csp.arithm(v, "<=", amount));
    // Continuous in practice ?
    if (cstr.isContinuous()) {
        if (cstr.isSatisfied(rp.getSourceModel())) {
            try {
                v.updateUpperBound(cstr.getAmount(), Cause.Null);
            } catch (ContradictionException e) {
                rp.getLogger().error("Unable to restrict to up to " + cstr.getAmount() + ", the maximum '" + rcm.getResourceIdentifier() + "' usage on " + n, e);
                return false;
            }
        } else {
            rp.getLogger().error("The constraint '{}' must be already satisfied to provide a continuous restriction", cstr);
            return false;
        }
    }
    return true;
}

Example 80 with Node

use of org.btrplace.model.Node in project scheduler by btrplace.

the class CResourceCapacity method getMisPlacedVMs.

@Override
public Set<VM> getMisPlacedVMs(Instance i) {
    if (cstr.getInvolvedNodes().size() <= 1) {
        // If there is only a single node, we delegate this work to CShareableResource.
        return Collections.emptySet();
    }
    Mapping map = i.getModel().getMapping();
    ShareableResource rc = ShareableResource.get(i.getModel(), cstr.getResource());
    if (rc == null) {
        return map.getRunningVMs(cstr.getInvolvedNodes());
    }
    Set<VM> bad = new HashSet<>();
    int remainder = cstr.getAmount();
    for (Node n : cstr.getInvolvedNodes()) {
        for (VM v : map.getRunningVMs(n)) {
            remainder -= rc.getConsumption(v);
            if (remainder < 0) {
                for (Node n2 : cstr.getInvolvedNodes()) {
                    bad.addAll(map.getRunningVMs(n2));
                }
                return bad;
            }
        }
    }
    return bad;
}