Examples with Root org.btrplace.model.constraint.Root used on opensource projects

Example 1 with Root

use of org.btrplace.model.constraint.Root in project scheduler by btrplace.

the class DefaultChocoScheduler method solve.

@Override
public ReconfigurationPlan solve(Instance i) throws SchedulerException {
    Model mo = i.getModel();
    Collection<SatConstraint> cstrs = i.getSatConstraints();
    // If a network view is attached, ensure that all the migrations' destination node are defined
    Network net = Network.get(mo);
    stages = null;
    if (net != null) {
        // The network view is useless to take placement decisions
        mo.detach(net);
        // Solve a first time using placement oriented MinMTTR optimisation constraint
        ReconfigurationPlan p = runner.solve(params, i);
        stages = new StagedSolvingStatistics(runner.getStatistics());
        if (p == null) {
            return null;
        }
        // Add Fence constraints for each destination node chosen
        List<SatConstraint> newCstrs = p.getActions().stream().filter(a -> a instanceof MigrateVM).map(a -> new Fence(((MigrateVM) a).getVM(), Collections.singleton(((MigrateVM) a).getDestinationNode()))).collect(Collectors.toList());
        Model result = p.getResult();
        if (result == null) {
            throw new InconsistentSolutionException(p, "The plan cannot be applied");
        }
        // Add Root constraints to all staying VMs
        newCstrs.addAll(mo.getMapping().getRunningVMs().stream().filter(v -> p.getOrigin().getMapping().getVMLocation(v).id() == result.getMapping().getVMLocation(v).id()).map(Root::new).collect(Collectors.toList()));
        // Add the old constraints
        newCstrs.addAll(cstrs);
        // Re-attach the network view
        mo.attach(net);
        // New timeout value = elapsed time - initial timeout value
        Parameters ps = new DefaultParameters(params);
        if (ps.getTimeLimit() > 0) {
            // in seconds
            double timeout = params.getTimeLimit() - runner.getStatistics().getMetrics().timeCount() / 1000;
            ps.setTimeLimit((int) timeout);
        }
        return runner.solve(ps, new Instance(mo, newCstrs, i.getOptConstraint()));
    }
    // Solve and return the computed plan
    return runner.solve(params, new Instance(mo, cstrs, i.getOptConstraint()));
}

Example 2 with Root

use of org.btrplace.model.constraint.Root in project scheduler by btrplace.

the class RootBuilderTest method testGoodSignatures.

@Test(dataProvider = "goodRoots")
public void testGoodSignatures(String str, int nbVMs) throws Exception {
    ScriptBuilder b = new ScriptBuilder(new DefaultModel());
    Set<SatConstraint> cstrs = b.build("namespace test; VM[1..10] : tiny;\n" + str).getConstraints();
    Assert.assertEquals(cstrs.size(), nbVMs);
    Set<VM> vms = new HashSet<>();
    for (SatConstraint x : cstrs) {
        Assert.assertTrue(x instanceof Root);
        Assert.assertTrue(vms.addAll(x.getInvolvedVMs()));
        Assert.assertEquals(x.isContinuous(), true);
    }
}

Example 3 with Root

use of org.btrplace.model.constraint.Root in project scheduler by btrplace.

the class CRootTest method testBasic.

@Test
public void testBasic() throws SchedulerException {
    Model mo = new DefaultModel();
    VM vm1 = mo.newVM();
    VM vm2 = mo.newVM();
    VM vm3 = mo.newVM();
    Node n1 = mo.newNode();
    Node n2 = mo.newNode();
    Mapping map = mo.getMapping().on(n1, n2).run(n1, vm1, vm2).ready(vm3);
    ChocoScheduler cra = new DefaultChocoScheduler();
    cra.doRepair(false);
    Root r1 = new Root(vm1);
    List<SatConstraint> l = new ArrayList<>();
    l.add(r1);
    l.addAll(Online.newOnline(map.getAllNodes()));
    ReconfigurationPlan p = cra.solve(mo, l);
    Assert.assertNotNull(p);
    Model res = p.getResult();
    Assert.assertEquals(n1, res.getMapping().getVMLocation(vm1));
}

Example 4 with Root

use of org.btrplace.model.constraint.Root in project scheduler by btrplace.

the class RootConverterTest method testViables.

@Test
public void testViables() throws JSONConverterException {
    Model mo = new DefaultModel();
    ConstraintsConverter conv = new ConstraintsConverter();
    conv.register(new RootConverter());
    Root d = new Root(mo.newVM());
    Assert.assertEquals(conv.fromJSON(mo, conv.toJSON(d)), d);
    System.out.println(conv.toJSON(d));
}

Example 5 with Root

use of org.btrplace.model.constraint.Root in project scheduler by btrplace.

the class RootSplitterTest method simpleTest.

@Test
public void simpleTest() {
    RootSplitter splitter = new RootSplitter();
    List<Instance> instances = new ArrayList<>();
    Model m0 = new DefaultModel();
    VM v = m0.newVM(1);
    m0.getMapping().addReadyVM(v);
    m0.getMapping().addRunningVM(m0.newVM(2), m0.newNode(1));
    Model m1 = new DefaultModel();
    m1.getMapping().addReadyVM(m1.newVM(3));
    m1.getMapping().addSleepingVM(m1.newVM(4), m1.newNode(2));
    m1.getMapping().addRunningVM(m1.newVM(5), m1.newNode(3));
    instances.add(new Instance(m0, new ArrayList<>(), new MinMTTR()));
    instances.add(new Instance(m1, new ArrayList<>(), new MinMTTR()));
    Set<VM> all = new HashSet<>(m0.getMapping().getAllVMs());
    all.addAll(m1.getMapping().getAllVMs());
    TIntIntHashMap index = Instances.makeVMIndex(instances);
    // Only VMs in m0
    Root single = new Root(v);
    Assert.assertTrue(splitter.split(single, null, instances, index, new TIntIntHashMap()));
    Assert.assertTrue(instances.get(0).getSatConstraints().contains(single));
    Assert.assertFalse(instances.get(1).getSatConstraints().contains(single));
}