
org.btrplace.scheduler.choco.constraint.CKilled Maven / Gradle / Ivy
/*
* Copyright 2021 The BtrPlace Authors. All rights reserved.
* Use of this source code is governed by a LGPL-style
* license that can be found in the LICENSE.txt file.
*/
package org.btrplace.scheduler.choco.constraint;
import org.btrplace.model.Instance;
import org.btrplace.model.Mapping;
import org.btrplace.model.VM;
import org.btrplace.model.constraint.Killed;
import org.btrplace.scheduler.choco.Parameters;
import org.btrplace.scheduler.choco.ReconfigurationProblem;
import java.util.Collections;
import java.util.Set;
/**
* Naive implementation of {@link org.btrplace.model.constraint.Killed}.
* This constraint is just a stub to be consistent with the model. It does not state any constraint
* as the state has already been expressed inside {@link org.btrplace.scheduler.choco.ReconfigurationProblem}.
*
* @author Fabien Hermenier
*/
public class CKilled implements ChocoConstraint {
private final Killed cstr;
/**
* Make a new constraint.
*
* @param c the constraint to rely on
*/
public CKilled(Killed c) {
cstr = c;
}
@Override
public boolean inject(Parameters ps, ReconfigurationProblem rp) {
if (cstr.isContinuous() && !cstr.getChecker().startsWith(rp.getSourceModel())) {
rp.getLogger().debug("Constraint {} is not satisfied initially", cstr);
return false;
}
return true;
}
@Override
public Set getMisPlacedVMs(Instance i) {
Mapping map = i.getModel().getMapping();
VM v = cstr.getInvolvedVMs().iterator().next();
if (map.contains(v)) {
return Collections.singleton(v);
}
return Collections.emptySet();
}
@Override
public String toString() {
return cstr.toString();
}
}
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