| 1 | /** |
| 2 | * |
| 3 | * Copyright (C) 2011 Cloud Conscious, LLC. <info@cloudconscious.com> |
| 4 | * |
| 5 | * ==================================================================== |
| 6 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 7 | * you may not use this file except in compliance with the License. |
| 8 | * You may obtain a copy of the License at |
| 9 | * |
| 10 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 11 | * |
| 12 | * Unless required by applicable law or agreed to in writing, software |
| 13 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 14 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 15 | * See the License for the specific language governing permissions and |
| 16 | * limitations under the License. |
| 17 | * ==================================================================== |
| 18 | */ |
| 19 | package org.jclouds.savvis.vpdc.compute.suppliers; |
| 20 | |
| 21 | import static com.google.common.base.Preconditions.checkNotNull; |
| 22 | import static com.google.common.collect.Iterables.find; |
| 23 | |
| 24 | import java.util.Set; |
| 25 | |
| 26 | import javax.inject.Inject; |
| 27 | import javax.inject.Singleton; |
| 28 | |
| 29 | import org.jclouds.collect.Memoized; |
| 30 | import org.jclouds.domain.Location; |
| 31 | import org.jclouds.domain.LocationScope; |
| 32 | |
| 33 | import com.google.common.base.Predicate; |
| 34 | import com.google.common.base.Supplier; |
| 35 | |
| 36 | /** |
| 37 | * |
| 38 | * @author Adrian Cole |
| 39 | * |
| 40 | */ |
| 41 | @Singleton |
| 42 | public class FirstNetwork implements Supplier<Location> { |
| 43 | @Singleton |
| 44 | public static final class IsNetwork implements Predicate<Location> { |
| 45 | @Override |
| 46 | public boolean apply(Location input) { |
| 47 | return input.getScope() == LocationScope.NETWORK; |
| 48 | } |
| 49 | |
| 50 | @Override |
| 51 | public String toString() { |
| 52 | return "isNetwork()"; |
| 53 | } |
| 54 | } |
| 55 | |
| 56 | private final Supplier<Set<? extends Location>> locationsSupplier; |
| 57 | private final IsNetwork isNetwork; |
| 58 | |
| 59 | @Inject |
| 60 | FirstNetwork(@Memoized Supplier<Set<? extends Location>> locationsSupplier, IsNetwork isNetwork) { |
| 61 | this.locationsSupplier = checkNotNull(locationsSupplier, "locationsSupplierSupplier"); |
| 62 | this.isNetwork = checkNotNull(isNetwork, "isNetwork"); |
| 63 | } |
| 64 | |
| 65 | @Override |
| 66 | public Location get() { |
| 67 | return find(locationsSupplier.get(), isNetwork); |
| 68 | } |
| 69 | |
| 70 | } |