/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.brooklyn.core.location.cloud;
import java.util.List;
import org.apache.brooklyn.api.location.Location;
import org.apache.brooklyn.entity.group.DynamicCluster;
import org.apache.brooklyn.location.multi.MultiLocation;
import com.google.common.annotations.Beta;
import com.google.common.base.Predicate;
/**
* For a location that has sub-zones within it (e.g. an AWS region has availability zones that can be
* mapped as sub-locations), this extension interface allows those to be accessed and used.
* For some well-known clouds, the availability zones are automatically set, although for others they may
* have to be configured explicitly. The "multi:(locs,...)" location descriptor (cf {@link MultiLocation}) allows
* this to be down at runtime.
* <p>
* Note that only entities which are explicitly aware of the {@link AvailabilityZoneExtension}
* will use availability zone information. For example {@link DynamicCluster}
* <p>
* Implementers are strongly encouraged to extend {@link AbstractAvailabilityZoneExtension}
* which has useful behaviour, rather than attempt to implement this interface directly.
*
* @since 0.6.0
*/
@Beta
public interface AvailabilityZoneExtension {
List<Location> getAllSubLocations();
List<Location> getSubLocations(int max);
List<Location> getSubLocationsByName(Predicate<? super String> namePredicate, int max);
}