| 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.ec2.compute.predicates; |
| 20 | |
| 21 | import static com.google.common.base.Preconditions.checkNotNull; |
| 22 | |
| 23 | import org.jclouds.compute.domain.Image; |
| 24 | import org.jclouds.compute.predicates.ImagePredicates; |
| 25 | import org.jclouds.ec2.domain.RootDeviceType; |
| 26 | |
| 27 | import com.google.common.base.Predicate; |
| 28 | |
| 29 | /** |
| 30 | * Container for image filters (predicates). |
| 31 | * |
| 32 | * This class has static methods that create customized predicates to use with |
| 33 | * {@link org.jclouds.compute.ComputeService}. |
| 34 | * |
| 35 | * @author Adrian Cole |
| 36 | */ |
| 37 | public class EC2ImagePredicates { |
| 38 | |
| 39 | /** |
| 40 | * evaluates true if the Image has the specified root device type |
| 41 | * |
| 42 | * @param rootDeviceType |
| 43 | * rootDeviceType of the images |
| 44 | * @return predicate |
| 45 | */ |
| 46 | public static Predicate<Image> rootDeviceType(final RootDeviceType rootDeviceType) { |
| 47 | checkNotNull(rootDeviceType, "rootDeviceType must be defined"); |
| 48 | return ImagePredicates.userMetadataContains("rootDeviceType", rootDeviceType.value()); |
| 49 | } |
| 50 | |
| 51 | |
| 52 | } |