com.eucalyptus.autoscaling.common.AutoScalingMetadatas.java Source code

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Here is the source code for com.eucalyptus.autoscaling.common.AutoScalingMetadatas.java

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/*************************************************************************
 * Copyright 2009-2013 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.autoscaling.common;

import static com.eucalyptus.autoscaling.common.AutoScalingMetadata.AutoScalingMetadataWithResourceName;
import java.util.Collection;
import com.eucalyptus.util.RestrictedTypes;
import com.google.common.base.Function;
import com.google.common.base.Predicate;
import com.google.common.base.Predicates;

/**
 *
 */
public class AutoScalingMetadatas extends RestrictedTypes {

    public static <T extends AutoScalingMetadataWithResourceName> Function<T, String> toArn() {
        return new Function<T, String>() {
            @Override
            public String apply(T metadata) {
                return metadata == null ? null : metadata.getArn();
            }
        };
    }

    public static <T extends AutoScalingMetadataWithResourceName> Predicate<T> filterByArn(
            final Collection<String> requestedArns) {
        return filterByProperty(requestedArns, toArn());
    }

    public static <T extends AutoScalingMetadataWithResourceName> Predicate<T> filterPrivilegesByIdOrArn(
            final Class<T> metadataClass, final Collection<String> requestedItems) {
        final Collection<String> names = AutoScalingResourceName.simpleNames(requestedItems);
        final Collection<String> arns = AutoScalingResourceName.arns(requestedItems);
        return Predicates.and(
                !arns.isEmpty() && !names.isEmpty()
                        ? Predicates.<T>or(AutoScalingMetadatas.<T>filterById(names),
                                AutoScalingMetadatas.<T>filterByArn(arns))
                        : !arns.isEmpty() ? AutoScalingMetadatas.<T>filterByArn(arns)
                                : AutoScalingMetadatas.<T>filterById(names),
                RestrictedTypes.filteringFor(metadataClass).byPrivileges().buildPredicate());
    }

}