org.mqnaas.core.impl.slicing.UnitManagment.java Source code

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Here is the source code for org.mqnaas.core.impl.slicing.UnitManagment.java

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package org.mqnaas.core.impl.slicing;

/*
 * #%L
 * MQNaaS :: Core
 * %%
 * Copyright (C) 2007 - 2015 Fundaci Privada i2CAT, Internet i Innovaci a Catalunya
 * %%
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Lesser Public License for more details.
 * 
 * You should have received a copy of the GNU General Lesser Public
 * License along with this program.  If not, see
 * <http://www.gnu.org/licenses/lgpl-3.0.html>.
 * #L%
 */

import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.CopyOnWriteArrayList;

import org.apache.commons.lang3.StringUtils;
import org.mqnaas.core.api.IResource;
import org.mqnaas.core.api.annotations.Resource;
import org.mqnaas.core.api.exceptions.ApplicationActivationException;
import org.mqnaas.core.api.slicing.IUnitManagement;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * This implementation of the {@link IUnitManagement} is backed by a {@link CopyOnWriteArrayList} and bound to {@link SliceResource}s.
 * 
 * @author Georg Mansky-Kummert
 */
public class UnitManagment implements IUnitManagement {

    private static final Logger log = LoggerFactory.getLogger(UnitManagment.class);

    private List<UnitResource> units;

    @Resource
    IResource resource;

    @Override
    public void activate() throws ApplicationActivationException {
        log.info("Initializing UnitManagment capability for resource " + resource.getId());
        units = new CopyOnWriteArrayList<UnitResource>();
        log.info("Initialized UnitManagment capability for resource " + resource.getId());

    }

    @Override
    public void deactivate() {
        log.info("Removing UnitManagment capability for resource " + resource.getId());
        units = new CopyOnWriteArrayList<UnitResource>();
        log.info("Removed UnitManagment capability for resource " + resource.getId());
    }

    @Override
    public IResource createUnit(String name) {
        if (StringUtils.isEmpty(name))
            throw new IllegalArgumentException("Slice unit require a valid name.");

        for (UnitResource unitResource : units)
            if (unitResource.getName().equals(name))
                throw new IllegalStateException("There already exist a slice unit with name " + name);

        UnitResource unit = new UnitResource(name);
        units.add(unit);
        return unit;
    }

    @Override
    public void removeUnit(IResource unit) {
        units.remove(unit);
    }

    @Override
    public List<IResource> getUnits() {
        return new ArrayList<IResource>(units);
    }

    public static boolean isSupporting(IResource resource) {
        return resource instanceof SliceResource;
    }

}