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

Example 16 with Instance

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

the class CMinMigrationsTest method main.

public static void main(String[] args) {
    String root = "/Users/fabien.hermenier/Documents/BtrPlace/nutanix/instances";
    List<OptConstraint> objs = Arrays.asList(/*new MinMTTR(),*/
    new MinMigrations());
    boolean verbose = true;
    for (OptConstraint o : objs) {
        System.out.print(" " + o);
    }
    System.out.println();
    for (int idx = 1; idx <= 256; idx += 5) {
        String path = root + "/lazan/lazan-" + idx + ".json.gz";
        if (verbose) {
            System.out.println("--- " + idx + " --- ");
        } else {
            System.out.print(idx);
        }
        List<Long> res = new ArrayList<>();
        for (OptConstraint o : objs) {
            if (verbose) {
                System.out.println("\t" + o);
            }
            Instance i = JSON.readInstance(new File(path));
            if (Network.get(i.getModel()) != null) {
                i.getModel().detach(Network.get(i.getModel()));
            }
            i = new Instance(i.getModel(), i.getSatConstraints(), o);
            ChocoScheduler s = new DefaultChocoScheduler();
            s.doOptimize(false);
            s.setTimeLimit(30);
            s.doRepair(false);
            ReconfigurationPlan p = s.solve(i);
            Assert.assertNotNull(p);
            res.add(p.getActions().stream().filter(x -> x instanceof MigrateVM).mapToLong(x -> x.getEnd() - x.getStart()).sum());
            // res.add((long)s.getStatistics().lastSolution().getDuration());
            if (verbose) {
                System.out.println(s.getStatistics());
            // System.out.println(p);
            }
        }
        if (!verbose) {
            for (Long l : res) {
                System.out.print("\t" + l);
            }
            System.out.println();
        }
    }
}

Example 17 with Instance

use of org.btrplace.model.Instance 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(mo, 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 18 with Instance

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

the class DefaultChocoSchedulerTest method testOnSolutionHook.

@Test
public void testOnSolutionHook() {
    ChocoScheduler cra = new DefaultChocoScheduler();
    Model mo = new DefaultModel();
    VM vm = mo.newVM();
    Node node = mo.newNode();
    mo.getMapping().on(node).run(node, vm);
    Instance i = new Instance(mo, Running.newRunning(Arrays.asList(vm)), new MinMTTR());
    List<ReconfigurationPlan> onSolutions = new ArrayList<>();
    cra.addSolutionListener((rp, plan) -> onSolutions.add(plan));
    Assert.assertEquals(1, cra.solutionListeners().size());
    ReconfigurationPlan plan = cra.solve(i);
    Assert.assertEquals(1, onSolutions.size());
    Assert.assertEquals(plan, onSolutions.get(0));
}

Example 19 with Instance

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

the class IssuesTest method computable.

/**
 * A helper to check that an instance has a solution.
 *
 * @param file the serialised instance. Must be in 'src/test/resources/'
 */
private static void computable(String file) {
    Instance i = JSON.readInstance(new File("src/test/resources/" + file));
    ChocoScheduler s = new DefaultChocoScheduler();
    ReconfigurationPlan p = s.solve(i);
    System.out.println(s.getStatistics());
    Assert.assertNotNull(p);
    System.out.println(p.getSize() + " action(s)");
}

Example 20 with Instance

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

the class IssuesTest method issue72.

@Test
public void issue72() throws Exception {
    String input = "{\"model\":{\"mapping\":{\"readyVMs\":[],\"onlineNodes\":{\"0\":{\"sleepingVMs\":[],\"runningVMs\":[9,8,7,6,5,4,3,2,1,0]},\"1\":{\"sleepingVMs\":[],\"runningVMs\":[19,18,17,16,15,14,13,12,11,10]}},\"offlineNodes\":[]},\"attributes\":{\"nodes\":{},\"vms\":{}},\"views\":[{\"defConsumption\":0,\"nodes\":{\"0\":32768,\"1\":32768},\"rcId\":\"mem\",\"id\":\"shareableResource\",\"defCapacity\":8192,\"vms\":{\"11\":1024,\"12\":1024,\"13\":1024,\"14\":1024,\"15\":1024,\"16\":1024,\"17\":1024,\"18\":1024,\"19\":1024,\"0\":1024,\"1\":1024,\"2\":1024,\"3\":1024,\"4\":1024,\"5\":1024,\"6\":1024,\"7\":1024,\"8\":1024,\"9\":1024,\"10\":1024}},{\"defConsumption\":0,\"nodes\":{\"0\":700,\"1\":700},\"rcId\":\"cpu\",\"id\":\"shareableResource\",\"defCapacity\":8000,\"vms\":{\"11\":0,\"12\":0,\"13\":0,\"14\":0,\"15\":0,\"16\":70,\"17\":0,\"18\":60,\"19\":0,\"0\":100,\"1\":0,\"2\":0,\"3\":0,\"4\":0,\"5\":0,\"6\":0,\"7\":0,\"8\":90,\"9\":0,\"10\":0}}]},\"constraints\":[],\"objective\":{\"id\":\"minimizeMTTR\"}}";
    Instance i = JSON.readInstance(new StringReader(input));
    ChocoScheduler s = new DefaultChocoScheduler();
    s.setTimeLimit(-1);
    i.getModel().detach(ShareableResource.get(i.getModel(), "mem"));
    i.getModel().detach(ShareableResource.get(i.getModel(), "cpu"));
    List<SatConstraint> cstrs = new ArrayList<>();
    ReconfigurationPlan p = s.solve(i.getModel(), cstrs, i.getOptConstraint());
    Assert.assertTrue(p.getActions().isEmpty());
}