org.btrplace.scheduler.runner.disjoint.model.SubModel Maven / Gradle / Ivy

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Instance solvers that split a single problem into smaller parts to solve them in parallel.
There is a newer version: 1.9.3
/*
 * Copyright  2020 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.runner.disjoint.model;

import org.btrplace.model.Attributes;
import org.btrplace.model.DefaultModel;
import org.btrplace.model.ElementBuilder;
import org.btrplace.model.MappingUtils;
import org.btrplace.model.Model;
import org.btrplace.model.Node;
import org.btrplace.model.VM;
import org.btrplace.model.view.ModelView;

import java.util.Collection;
import java.util.Collections;
import java.util.Objects;
import java.util.Set;

/**
 * Define a model that is a sub-model of a bigger one.
 * The operation on a sub-model are limited to the elements that belong
 * to the given scope.
 * 
 * Elements created in a sub-model are integrated automatically into the
 * parent component
 * It is not allowed to attach/detach/clear decorators
 * It is not possible to set the attributes
 * 
 *
 * @author Fabien Hermenier
 */
public class SubModel implements Model {

  private final Model parent;

  private final Collection scope;

  private final SubMapping sm;

  private final ElementBuilder eb;

    /**
     * Make a new sub-model with an empty scope for ready VMs.
     *
     * @param p  the parent model
     * @param b  the element builder to rely on
     * @param ns the node to restrict the model on.
     */
    public SubModel(Model p, ElementBuilder b, Collection ns) {
        this(p, b, ns, Collections.emptySet());
    }

    /**
     * Make a new sub-model.
     *
     * @param p         the parent model
     * @param b         the element builder to rely on
     * @param nodeScope the node to restrict the model on.
     * @param vmReady   the scope of VMs that are ready in the parent model.
     */
    public SubModel(Model p, ElementBuilder b, Collection nodeScope, Set vmReady) {
        this.scope = nodeScope;
        this.parent = p;
        this.eb = b;
        sm = new SubMapping(p.getMapping(), scope, vmReady);
    }

    /**
     * Get the scope of the model.
     *
     * @return a set of nodes
     */
    public Collection getScope() {
        return scope;
    }

    @Override
    public ModelView getView(String id) {
        return parent.getView(id);
    }

    @Override
    public Collection getViews() {
        return parent.getViews();
    }

    /**
     * Unsupported.
     */
    @Override
    public boolean attach(ModelView v) {
        throw new UnsupportedOperationException();
    }

    /**
     * Unsupported.
     */
    @Override
    public boolean detach(ModelView v) {
        throw new UnsupportedOperationException();
    }

    /**
     * Unsupported.
     */
    @Override
    public void clearViews() {
        throw new UnsupportedOperationException();
    }

    /**
     * Get a mapping that is limited to the given scope.
     *
     * @return a mapping
     */
    @Override
    public SubMapping getMapping() {
        return sm;
    }

    @Override
    public Attributes getAttributes() {
        return parent.getAttributes();
    }

    /**
     * Unsupported.
     */
    @Override
    public void setAttributes(Attributes attrs) {
        throw new UnsupportedOperationException();
    }

    /**
     * Clone this model using a {@link DefaultModel}.
     *
     * @return a mutable clone
     */
    @Override
    public Model copy() {
        DefaultModel m = new DefaultModel(eb.copy());
        MappingUtils.fill(sm, m.getMapping());
        for (ModelView rc : parent.getViews()) {
            m.attach(rc.copy());
        }
        m.setAttributes(this.getAttributes().copy());
        return m;
    }

    @Override
    public VM newVM() {
        VM v = eb.newVM();
        if (v != null) {
            parent.newVM(v.id());
        }
        return v;
    }

    @Override
    public VM newVM(int id) {
        VM v = eb.newVM(id);
        if (v != null) {
            parent.newVM(id);
        }
        return v;

    }

    @Override
    public Node newNode() {
        Node n = eb.newNode();
        if (n != null) {
            parent.newNode(n.id());
        }
        return n;
    }

    @Override
    public Node newNode(int id) {
        Node n = eb.newNode(id);
        if (n != null) {
            parent.newNode(id);
        }
        return n;
    }

    @Override
    public boolean contains(VM v) {
        return parent.contains(v);
    }

    @Override
    public boolean contains(Node n) {
        return parent.contains(n);
    }

    @Override
    public String toString() {
        StringBuilder b = new StringBuilder();
        b.append("Mapping:\n");
        b.append(getMapping());
        b.append("\nAttributes:\n");
        b.append(getAttributes());
        b.append("\nViews:\n");
        for (ModelView entry : parent.getViews()) {
            b.append(entry.getIdentifier()).append(": ");
            b.append(entry.toString()).append("\n");
        }
        return b.toString();
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) {
            return true;
        }
        if (o == null || getClass() != o.getClass()) {
            return false;
        }

        Model that = (Model) o;

        if (!sm.equals(that.getMapping())) {
            return false;
        }

        //TODO: excessive, we should only focus on my attributes
        if (!parent.getAttributes().equals(that.getAttributes())) {
            return false;
        }

        Collection thatViews = that.getViews();
        return getViews().equals(thatViews);
    }

    @Override
    public int hashCode() {
        return Objects.hash(sm, parent.getViews(), parent.getAttributes());
    }
}