com.eucalyptus.compute.vpc.persist.PersistenceSubnets.java Source code

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Here is the source code for com.eucalyptus.compute.vpc.persist.PersistenceSubnets.java

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/*************************************************************************
 * Copyright 2009-2014 Eucalyptus Systems, Inc.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; version 3 of the License.
 *
 * 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 Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see http://www.gnu.org/licenses/.
 *
 * Please contact Eucalyptus Systems, Inc., 6755 Hollister Ave., Goleta
 * CA 93117, USA or visit http://www.eucalyptus.com/licenses/ if you need
 * additional information or have any questions.
 ************************************************************************/
package com.eucalyptus.compute.vpc.persist;

import java.util.NoSuchElementException;
import com.eucalyptus.component.annotation.ComponentNamed;
import com.eucalyptus.compute.common.CloudMetadata;
import com.eucalyptus.compute.common.internal.vpc.Subnet;
import com.eucalyptus.compute.common.internal.vpc.Subnets;
import com.eucalyptus.compute.common.internal.vpc.VpcMetadataException;
import com.eucalyptus.compute.common.internal.vpc.VpcMetadataNotFoundException;
import com.eucalyptus.auth.principal.OwnerFullName;
import com.google.common.base.Function;
import com.google.common.base.Predicates;
import com.google.common.collect.Iterables;

/**
 *
 */
@ComponentNamed
public class PersistenceSubnets extends VpcPersistenceSupport<CloudMetadata.SubnetMetadata, Subnet>
        implements Subnets {

    public PersistenceSubnets() {
        super("subnet");
    }

    @Override
    public <T> T lookupDefault(final OwnerFullName ownerFullName, final String availabilityZone,
            final Function<? super Subnet, T> transform) throws VpcMetadataException {
        try {
            return Iterables.getOnlyElement(listByExample(Subnet.exampleDefault(ownerFullName, availabilityZone),
                    Predicates.alwaysTrue(), transform));
        } catch (NoSuchElementException e) {
            throw new VpcMetadataNotFoundException(
                    qualifyOwner("Default subnet not found for zone: " + availabilityZone, ownerFullName));
        }
    }

    @Override
    protected Subnet exampleWithOwner(final OwnerFullName ownerFullName) {
        return Subnet.exampleWithOwner(ownerFullName);
    }

    @Override
    protected Subnet exampleWithName(final OwnerFullName ownerFullName, final String name) {
        return Subnet.exampleWithName(ownerFullName, name);
    }
}